JP5275000B2 - Operation unit structure of work vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an operating part structure of a working vehicle arranged with a lever guide, a plurality of manually operable operation members and an arm rest at one directional side in the width direction of an operating seat and while improving the operability of the operating members, capable of preventing operational error for the operating members. <P>SOLUTION: The operating part structure of a working vehicle is provided by constituting the lever guide 97 so as to straddle over a floor member 94 extending between the operating seat 92 and a fender 91 arranged at the one directional side in the machine body width direction of the operating seat 92 and the fender 91, also constituting the arm rest 93 so that an arm rest body 931 on which an operator can lay an arm, is positioned in the upper direction than the lever guide 97 and also at a halfway part in the machine body width direction of the lever guide 97, and arranging at least one of the operating members 72, 73 at an inner side in the machine body width direction and at an outer side respectively, by nipping the arm rest body 931. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an operation unit structure applied to a work vehicle such as a tractor, and more specifically, a work vehicle in which a lever guide, a plurality of manipulable operation members, and an armrest are arranged on one side of the driver's seat in the body width direction. This relates to the operation unit structure.

  As an operation unit structure applied to a working vehicle such as a tractor, an armrest disposed in a gap between a driver's seat and one fender located on one side of the driver's seat in the body width direction, and the one fender A lever guide that partially covers the lever guide, and a plurality of operation members arranged on the lever guide, and an operation member for raising and lowering the work implement different from the plurality of operation members arranged on the upper surface of the front end portion of the armrest Has been proposed (see Patent Document 1 below).

  According to the conventional operation unit structure, by providing the operation member for raising and lowering the work implement at the front end portion of the armrest, the work implement can be smoothly raised and lowered and malfunction can be prevented. Yes.

However, in the conventional operation unit structure, all the operation members (hereinafter referred to as other operation members) other than the operation members provided on the armrest are arranged on the outer side in the body width direction from the armrest. All of the other operation members are difficult to operate with their arms placed on the armrest, and there is room for improvement in terms of operability.
Further, since all the other operation members are concentrated on the outer side in the body width direction from the armrest, there is a problem that an erroneous operation is likely to occur between the other operation members.
JP 2008-17803 A

The present invention has been made in view of such a conventional technique, and has an operation part structure of a working vehicle in which a lever guide, a plurality of manipulable operation members, and an armrest are arranged on one side in the body width direction of a driver's seat. there are, and purpose of providing the operation section structure of a working vehicle capable of preventing an erroneous operation with respect to the operating member while improving the operability of the operating member.

Wherein in order to achieve the object, the present onset Ming, the fuselage one widthwise side of the driver's seat, the lever guide, and an operation section structure of the working vehicle artificially operable plurality of operation members and the armrest are positioned, The lever guide is configured to straddle the fender and a floor member extending between the driver seat and a fender disposed on one side of the driver seat in the vehicle width direction, and the operator rests his arm on the armrest. The armrest body that can be placed is positioned above the lever guide and in the middle of the lever guide in the machine width direction, and the operation member is a work for raising and lowering a work machine attached to the work vehicle. Operating a machine lift lever, a work posture setting member including a work machine tilt setting member for setting a tilt of the work machine with respect to the work vehicle, and a transmission provided in the work vehicle. A travel system operation member including a speed change operation member, and the work machine elevating lever is configured to be rotatable about a rotation axis along a body width direction between the driver seat and the fender. The armrest is supported directly or indirectly by a bracket erected on the floor member, and the armrest body is located on the outer side in the body width direction with respect to the work implement elevating lever and is wider than the work posture setting member. The lever guide is supported by the bracket so as to be positioned inward in the direction, and the lever guide has an upper end portion that is an operation portion of the work implement lifting lever and an upper end portion of the attachment plate extending upward. The armrest body, the work implement lifting lever, and the work posture setting member are few with respect to the longitudinal position of the machine body. And the armrest includes a front extending portion extending forward from the armrest body so as to be positioned in front of the work posture setting member, and the speed change operation member includes the front extension. Provided is an operation unit structure for a work vehicle that is disposed on an outer side in the body width direction of the existing part .

Preferably, the traveling system operation member includes a maximum speed setting member that sets a maximum speed output value of the transmission, and the maximum speed setting member is disposed on an upper surface of the front extension portion.

In order to achieve the above object, the present invention provides a work vehicle operation unit structure in which a lever guide, a plurality of manipulable operation members, and an armrest are arranged on one side of the driver's seat in the body width direction. The lever guide is configured to straddle the fender and a floor member extending between the driver seat and a fender disposed on one side of the driver seat in the body width direction. The mountable armrest main body is configured to be located above the lever guide and in the middle of the lever guide in the machine width direction, and at least on the inner side and the outer side in the machine width direction across the armrest body. One operation member is arranged, and the operation member is a PTO output operation member for performing intermittent operation of power transmission to the PTO shaft provided in the work vehicle. A PTO-based operation member, and the PTO-based operation member is disposed on the upper surface of the lever guide on the rear side of the armrest body so as to be positioned below a virtual rear surface extending from the upper surface of the armrest body to the rear side. Provided is an operation unit structure of a working vehicle provided.

  Preferably, the operation member includes a work implement raising / lowering lever for raising and lowering a work implement attached to the work vehicle, and a work implement inclination setting member for setting an inclination of the work implement with respect to the work vehicle. The working machine elevating lever is directly attached to a bracket erected on the floor member so as to be rotatable about a rotation axis along the body width direction between the driver's seat and the fender. Alternatively, the armrest is supported by the bracket via a mounting plate so that the armrest main body is positioned outward of the work machine lifting lever in the body width direction. The upper end portion that is the operation portion of the work implement lifting lever and the upper end portion of the mounting plate are allowed to extend upward while surrounding the bracket.

  More preferably, in the work implement elevating lever, an upper end portion as an operation portion is positioned below an inner surface in the virtual width direction in which the upper surface of the armrest body is extended inward in the body width direction.

  Preferably, the armrest body has an inclined surface whose upper surface becomes lower as going inward in the body width direction.

According to the operation unit structure of the working vehicle according to one aspect of the present invention , since at least one operation member is disposed on each of the inner side and the outer side in the body width direction with the armrest body interposed therebetween, a plurality of operations are performed. Compared to the conventional configuration in which all the members are arranged on the outer side in the body width direction from the armrest body, it is possible to effectively prevent an erroneous operation that is contrary to the intention.

Furthermore, according to the aspect of the present invention, the work implement lifting lever as the operation member can be rotated about a rotation axis along the width of the vehicle body between the driver seat and the fender. The armrest is supported directly or indirectly by a bracket erected on the floor member, and the armrest is disposed through the mounting plate so that the armrest body is located outward of the work implement lifting lever in the body width direction. is supported by a bracket, the lever guide, the upper end portion of the an operation unit of the working machine lifting lever upper portion and the mounting plate surrounds the bracket while allowed to extend upwardly The working machine lift lever, which requires a relatively large installation space to be rotated around the rotation axis, utilizes the gap between the driver seat and the fender By installing Te, it can be made compact the operation section structure.
Moreover, since the armrest and the work implement lifting lever are supported by the single bracket, the support structure of both members can be simplified.

Furthermore, according to one aspect of the present invention, the armrest body, the work implement lifting lever, and the work posture setting member as the operation member are at least partially overlapped with respect to the longitudinal position of the machine body, and the operation Since the speed change operation member as a member is arranged on the side surface on the outer side in the body width direction of the front extension portion extending forward from the armrest body so as to be positioned in front of the work posture setting member, The shift operation member that is relatively frequently used is easily operated in a state where the arm is placed on the armrest body while the armrest body, the work implement elevating lever, and the work posture setting member are arranged in a compact manner. Can do.
That is, since the front extension portion extending forward from the armrest body is provided, and the speed change operation member is provided on the outer surface in the body width direction of the front extension portion, the operator holds the arm with the palm facing inward. By placing the armrest body on the armrest body, the speed change operation member can be accessed in a state in which free space exists above and below the wrist. Accordingly, it is possible to improve the operability of the shift operation member that is frequently used.

Also, in the operation part structure of the working vehicle according to another aspect of the present invention, since at least one operation member is disposed on each of the inner side and the outer side in the body width direction with the armrest body interposed therebetween, Compared to the conventional configuration in which all of the operation members are arranged on the outer side in the body width direction from the armrest body, it is possible to effectively prevent an unintentional erroneous operation.

Furthermore, according to the operation part structure of the working vehicle which concerns on the other aspect of this invention, the said PTO type | system | group operation member as the said operation member is located below the virtual back surface which extended the upper surface of the said armrest main body to the back side. Thus, since it is provided on the upper surface of the lever guide on the rear side of the armrest body, the PTO operation member can be arranged in a compact manner while preventing erroneous operation of the PTO operation member.

In the operation part structure of the work vehicle according to another aspect of the present invention, the work machine lifting lever as the operation member can be rotated about a rotation axis along the body width direction between the driver seat and the fender. The mounting plate is directly or indirectly supported by a bracket erected on the floor member so that the armrest is positioned outward in the body width direction of the work implement lifting lever. The lever guide surrounds the bracket while allowing the upper end portion, which is the operating portion of the work implement lifting lever, and the upper end portion of the mounting plate to extend upward. The working machine lift lever, which requires a relatively large installation space to be rotated around the rotation axis, is connected to the driver seat and the fen By installing by using the gap between, it can be made compact the operation section structure.
Moreover, since the armrest and the work implement lifting lever are supported by the single bracket, the support structure of both members can be simplified.

Before Symbol working machine lifting lever, if configured upper portion which is an operation portion is located below a virtual width direction inner surface of the upper surface has an extension to the body width direction inner side of the armrest body, the working machine lifting While improving the operability of the lever, it is possible to effectively prevent the operator's arm or the like from hitting the operator's arm against the operator's arm and the operator operating the operator's arm.

If low made such inclined surface as the upper surface of the front Symbol armrest body goes inward body width direction, it is possible to pilot a stable posture is placed on the arm on the armrest body. In addition, it is possible to improve the operability of the operation member positioned on the inner side in the body width direction from the armrest body in a state where the arm is placed on the armrest body.

Hereinafter, preferred embodiments of the operation unit structure of a working vehicle according to the present invention will be described with reference to the accompanying drawings.
1 and 2 show a side view and a transmission schematic diagram of a working vehicle 1 to which an operation unit structure according to an embodiment of the present invention is applied.

As shown in FIG. 1, the work vehicle 1 is a tractor to which a work machine 10 can be attached.
Specifically, as shown in FIGS. 1 and 2, the working vehicle 1 includes a body frame 2, an engine 3 that is a drive source supported by the body frame 2, and a pair of left and right driven by the engine 3. And a traveling device 4.
In the present embodiment, the pair of left and right traveling devices 4 includes a pair of left and right front wheels 4b and a pair of left and right rear wheels 4a. The front wheel 4b is driven.

  A transmission case 50 is connected to the rear part of the body frame 2 and accommodates a transmission 5 for appropriately shifting the rotation of the engine 3 and transmitting it to the rear wheel 4a and the front wheel 4b. A PTO shaft 61 for driving the working machine 10 such as a tiller is provided on the rear side surface of the transmission case 50 so as to protrude rearward.

  The transmission 5 is a traveling system transmission path that transmits power input from the engine 3 via a transmission shaft 30 (see FIG. 2) to drive wheels (in this embodiment, after acting as a main drive wheel). A traveling system main transmission path for transmitting power to the wheels 4a and a traveling system auxiliary transmission path for transmitting power to the front wheels 4b acting as auxiliary driving wheels), and the power from the engine 3 via the PTO shaft 61. And a PTO transmission path that outputs to the outside.

As shown in FIG. 2, the transmission 5 receives the output from the engine 3 as a traveling transmission path, and the transmission 51 functions as a main transmission, and the rotational power from the transmission 51 is rotated forward. Alternatively, the forward / reverse switching device 52 that can be switched in the reverse direction, the mechanical auxiliary transmission 53 that changes the rotational power from the transmission 51, and the left and right rear wheels that transmit the rotational power from the auxiliary transmission 53 And a differential gear unit 54 that differentially transmits to 4a.
In the present embodiment, the transmission 5 includes a 2WD 4WD switching device 55 capable of intermittently connecting the rotational power from the auxiliary transmission 53 to the pair of left and right front wheels 4b.

In the present embodiment, the transmission 51 is an inline hydraulic continuously variable transmission (hereinafter referred to as a continuously variable transmission 51) in which a transmission input shaft 511 and a transmission output shaft 512 are concentrically arranged. ing. The transmission output shaft 512 has a hollow shape, and the transmission input shaft 511 is inserted therein.
As shown in FIG. 2, the continuously variable transmission 51 includes the transmission input shaft 511 that is operatively connected to the transmission shaft 30, a hydraulic pump body 513 that is supported by the transmission input shaft 511 so as not to be relatively rotatable, A hydraulic motor main body 514 fluidly connected to the hydraulic pump main body 513 and the speed change output shaft 512 that outputs the rotational power of the hydraulic motor main body 514 are provided.
At least one of the hydraulic pump main body 513 and the hydraulic motor main body 514 is a variable displacement type. In the present embodiment, the hydraulic pump main body 513 is a variable displacement type.
Accordingly, the continuously variable transmission 51 includes a movable swash plate 515 that changes the amount of oil supplied to and discharged from the hydraulic pump main body 513 and a transmission hydraulic cylinder 516 that tilts the movable swash plate 515 in addition to the above-described configuration. Yes.
According to the continuously variable transmission 51, the shift hydraulic cylinder 516 is operated in response to an operation of a shift operation member (described later) as an operation member, whereby the shift input shaft 511 of the movable swash plate 515 and the shift shift are performed. The inclination angle with respect to the output shaft 512 is changed, and the amount of hydraulic oil discharged from the hydraulic pump main body 513 to the hydraulic motor main body 514 is changed. A rotation speed ratio of the shift output shaft 512 to the shift input shaft 511 is determined according to the amount of hydraulic oil discharged from the hydraulic pump main body 513 to the hydraulic motor main body 514.

As shown in FIG. 2, the forward / reverse switching device 52 is interposed between the continuously variable transmission 51 and the auxiliary transmission 53.
The forward / reverse switching device 52 includes a forward clutch 522 and a reverse clutch 523 that are loosely fitted to a forward / reverse output shaft 521 that outputs a forward or reverse rotation output, and the forward clutch 522 and the reverse clutch 523, respectively. The forward input gear 524 and the reverse input gear 525 are fixed so as not to rotate relative to each other.
The forward input gear 524 is meshed with a speed change output gear 517 fixed to the speed change output shaft 512 so as not to be relatively rotatable.
The reverse input gear 525 is meshed with a first counter gear 527 that is fixed to a counter shaft 526 parallel to the forward / reverse output shaft 521 so as not to be relatively rotatable.
The transmission output gear 517 is also meshed with a second counter gear 528 fixed to the counter shaft 526 so as not to be relatively rotatable.

Each of the forward and reverse clutches 522 and 523 is a well-known friction multi-plate hydraulic clutch. In this configuration, when the forward clutch 522 is engaged and the forward input gear 524 is connected to the forward / reverse output shaft 521, the rotational output of the shift output shaft 512 is converted into the shift output gear 517 and the forward input. This is transmitted to the forward / reverse output shaft 521 via the gear 524, and the forward / reverse output shaft 521 rotates in the forward direction of the machine body. On the contrary, when the reverse clutch 523 is engaged and the reverse input gear 525 is connected to the forward / reverse output shaft 521, the rotational output of the shift output shaft 512 becomes the shift output gear 517, the second counter. This is transmitted to the forward / reverse output shaft 521 via the gear 528, the counter shaft 526, the first counter gear 527 and the reverse input gear 525, and the forward / reverse output shaft 521 rotates in the reverse direction of the machine body.
In the present embodiment, the forward / reverse switching device 52 also functions as a main clutch that interrupts the rotational power from the engine 3 to the traveling device 4. That is, by engaging one of the forward clutch 522 and the reverse clutch 523 with the forward / reverse output shaft 521, a state in which power can be transmitted to the traveling device 4 (main clutch ON state) When the forward clutch 522 and the reverse clutch 523 are not engaged with the forward / reverse output shaft 521, the power transmission to the traveling device 4 is interrupted (the main clutch is OFF). State).

The sub-transmission device 53 includes a plurality of transmission gear pairs, and selectively engages the plurality of transmission gear pairs to change the rotational power of the forward / reverse output shaft 521 and then to the front output shaft. Rotational power is transmitted to 531 and the rear output shaft 532.
The rotational power of the rear output shaft 532 is differentially transmitted to the pair of rear wheels 4a via the differential gear unit 54, and the rotational power of the front output shaft 531 is transmitted to the two-wheel drive / four-wheel drive switching device 55. Is selectively transmitted to the pair of front wheels 4b.
In the present embodiment, the two-wheel drive / four-wheel drive switching device 55 further includes a front wheel speed increasing mechanism that can drive the front wheel 4b at a higher speed during the fourth speed driving. That is, the two-wheel drive / four-wheel drive switching device 55 can take any one of the drive release state, the normal drive state, and the speed-up drive state of the front wheels 4b.

The transmission 5 includes, as the PTO transmission path, a PTO clutch 56 capable of interrupting the rotational power of the engine 3 input via the transmission shaft 30, and a PTO transmission 59 for shifting the rotational power of the engine 3. And.
The PTO clutch 56 is a well-known friction multi-plate hydraulic clutch loosely fitted to the clutch output shaft 57, and the PTO clutch 56 is brought into a clutch engagement state via a PTO clutch hydraulic cylinder 58 described later. The rotational power of the transmission shaft 30 is transmitted to the clutch output shaft 57.
The PTO transmission 59 has a plurality of transmission gear pairs, and selectively engages the plurality of transmission gear pairs to change the rotational power of the clutch output shaft 57, and then the PTO shaft 61 Rotational power is transmitted to the PTO speed change output shaft 60 operatively connected to the.

The work machine 10 that can be attached to the work vehicle 1 is configured to be able to move up and down with respect to the machine body frame 2 and to be tilted to the left and right by turning around an axis along the machine body longitudinal direction.
As illustrated in FIG. 1, the working machine 10 may be a rotary tiller having a tilling claw shaft 11 along a machine body width direction and having a plurality of tilling claws 12. .
The work machine 10 is configured such that a link frame 17 on which the tilling claw shaft 11 is supported is connected to the machine body frame 2 via a link mechanism 16. The link mechanism 16 includes an upper link 161, a pair of left and right lower links 162, and a pair of left and right lift arms 151 that connect the tilling claw shaft 11 to the airframe frame 2 so as to be movable up and down, and a right and left connecting the lower link 162. A pair of link rods 163 is included.

Further, the working machine 10 covers a cultivation upper surface cover 13 disposed so as to cover the rotation claw C around the cultivation claw shaft 11 of the cultivation claw 12 and the rear of the rotation claw C of the cultivation claw 12. And a tilling rear cover 19 arranged in this manner. The tilling rear cover 19 is connected to the rear end portion of the tilling top cover 13 via a pivot shaft 14 extending in the width direction of the machine body.
In the working machine 10, when the tilling claw 12 is in a lowered state in contact with the ground, the rear end portion of the tilling rear cover 19 is also grounded, and the rear end portion of the tilling rear cover 19 is supported by the ground pressure. Rotate upward about 14 times. Further, when the tilling claw 12 is lifted from the ground, the rear end portion of the tilling rear cover 19 is also lifted from the ground, and the rear end portion of the tilling rear cover 19 is directed downward around the pivot shaft 14. Rotate.
That is, by measuring the rotation angle of the tilling rear cover 19 around the pivot shaft 14 with respect to the tilling top cover 13, the tilling depth D at that time can be measured.
Therefore, in the present embodiment, the rotary cultivator 10 includes a rear cover sensor 88 for detecting a rotation angle of the tilling rear cover 19 around the pivot shaft 14 with respect to the tilling top cover 13.

In the present embodiment, the working vehicle 1 has a lifting drive device 15 for allowing the working machine 10 to be lifted and lowered with respect to the machine body frame 2.
As shown in FIG. 1, the elevating drive device 15 includes a pair of left and right lift arms 151 that connect the tilling claw shaft 11 of the work machine 10 to the machine body frame 2 so as to be movable up and down, and the lift arms 151. A pivot shaft 152 along the body width direction that directly or indirectly supports the body frame 2, and a lift control hydraulic cylinder 153 (described later) that pivots the lift arm 151 about the pivot shaft 152. Have.
The work vehicle 1 has a work machine lift position sensor 81 that detects the lift position of the work machine 10 with respect to the machine body frame 2.
Specifically, the work implement lifting position sensor 81 can be realized by a rotation angle sensor that detects a rotation angle of the lift arm 151 around the rotation shaft 152.

In addition, the work vehicle 1 has a tilt drive device 18 that allows the work machine 10 to tilt left and right with respect to the body frame 2.
As shown in FIG. 1, the tilt drive device 18 includes a tilt control hydraulic cylinder 181 interposed in one of the pair of left and right link rods 163.
One of the pair of left and right link rods 163 is configured such that its length can be expanded and contracted with respect to either one of the pair of left and right link rods 163 by the tilt control hydraulic cylinder 181, and the pair of left and right links By extending or contracting one length of the rod 163 with respect to the other, the tilling claw shaft 11 is configured to be tiltable to the left and right with respect to the body frame 2.

As shown in FIG. 1, the work vehicle 1 has a machine body tilt sensor 82 that can measure a left-right tilt angle with respect to the ground of the work vehicle 1.
Further, although not shown in FIG. 1, the working vehicle 1 has a working machine inclination sensor 83 (see FIG. 4 described later) that measures a right and left inclination angle with respect to the machine body frame 2.

In the present embodiment, as shown in FIG. 2, the working vehicle 1 includes a control device 8 that can receive signals from various operation members and sensors and operate a corresponding actuator (such as a hydraulic cylinder). .
The control device 8 includes a traveling system control unit 80a that controls various transmissions and switching devices of the traveling system transmission path, and a PTO system control unit 80b that controls the PTO clutch 56 of the PTO transmission path (hereinafter described later). 3) and a work machine system control unit 80c (see FIG. 4 described later) for performing various controls of the work machine 10.
The traveling system control unit 80a, the PTO system control unit 80b, and the work machine system control unit 80c may be configured as independent control devices, or at least any two control units may be configured as one control device. It is good also as sharing with.

FIG. 3 is a control block diagram of the traveling system and the PTO system of the working vehicle 1 shown in FIGS. 1 and 2.
In the present embodiment, the work vehicle 1 has a traveling system operation member 71 as the operation member, as shown in FIG. The traveling system operation member 71 includes a speed change operation member 711 for operating the continuously variable transmission 51 and a maximum speed setting member 712 for setting the highest speed output value of the continuously variable transmission 51.
The work vehicle 1 further includes a shift operation detection sensor 84 that detects an operation position of the shift operation member 711 and a maximum speed setting sensor 85 that detects an operation amount of the maximum speed setting member 712.
The traveling system control unit 80 a is configured to control the operation of the transmission hydraulic cylinder 516 based on a signal from the transmission operation detection sensor 84.
Further, the traveling system control unit 80a changes the speed ratio of the continuously variable transmission 51 when the speed change operation member 711 is operated to the maximum within the operable range according to the operation amount of the maximum speed setting member 712. Is configured to do.

According to the work vehicle 1 having the above-described configuration, the operation amount of the maximum speed setting member 712 that is manually operated is detected by the maximum speed setting sensor 85, and the control device 8 can detect the maximum speed of the continuously variable transmission 51. Change the output value.
When the speed change ratio of the continuously variable transmission 51 when the speed change operating member 711 is fully operated within a predetermined operable range, the control device 8 changes the speed based on the changed speed change ratio. The hydraulic cylinder 516 is controlled to operate (tilt) the movable swash plate 515 of the continuously variable transmission 51.
That is, even if the speed change operation member 711 is operated to the maximum, the control device 8 controls the output rotation speed of the continuously variable transmission 51 so that the predetermined speed set by the maximum speed setting member 712 is obtained.
Accordingly, the maximum speed setting value obtained by the maximum operation of the speed change operation member 711 can be limited to the low speed range by the maximum speed setting member 712, and the resolution of the vehicle speed setting in the low speed range can be improved. The speed control in can be performed with higher accuracy.

FIG. 4 is a control block diagram of the work machine system of the work vehicle 1 shown in FIGS. 1 and 2.
In the present embodiment, as shown in FIG. 4, the working vehicle 1 includes, as the operation member, a working machine lifting lever 72 for raising and lowering the working machine 10 by manual operation, and the work on the working vehicle 1. And a work posture setting member 73 including a work machine tilt setting member 731 for setting the tilt of the machine 10.
The work implement system control unit 80c attaches the work implement 10 to the machine body frame 2 based on signals set and input by the work implement lift lever 72 and the work posture setting member 73 in a state where the work implement 10 is attached. Ascending / descending control and right / left tilt control are performed.

  This will be described in more detail. The work vehicle 1 includes a work implement lifting operation position detection sensor 86 that detects an operation amount of the work implement lift lever 72, and the work implement system control unit 80 c includes the work implement lift operation position detection sensor 86. The lift drive device 15 is controlled in accordance with the operation amount of the work implement lift lever 72 detected by the above-described operation so that the lift position of the work implement 10 relative to the work vehicle 1 can be changed.

In the present embodiment, as will be described later, the work implement elevating lever 72 is rotatable about a rotation axis 721 along the machine body width direction, and the work implement elevating operation position detection sensor 86 is configured as described above. An operation amount of the work implement elevating lever 72 is detected by detecting a rotation angle of the work implement elevating lever 72 around the rotation shaft 721.
In the above configuration, when the work implement lifting lever 72 is operated, the control device 8 activates the lift drive device 15 that raises and lowers the work implement 10 in accordance with the operation, so that the work implement 10 is moved to the work implement. The elevation lever 72 is moved to a height corresponding to the operation position.

In the present embodiment, as shown in FIG. 4, the work vehicle 1 includes a work implement up / down operation member 74 that raises and lowers the work implement 10 by a one-touch operation. The work posture setting member 73 includes a work implement lift position setting member 734 that sets the lift position of the work implement 10 in the operation of the work implement up / down operation member 74. Furthermore, the work implement lifting / lowering lever 72 can also act as a work implement lowering position setting member that determines the lowering position of the work implement 10 in the operation of the work implement up / down operation member 74.
The work implement system control unit 80c determines whether the work implement lifting position sensor 81 detects the lift position of the work implement lift position setting member 734 according to the operation of the work implement up / down operation member 74. The raising / lowering drive unit 15 is controlled to be in the ascending position set based on the operating position or the lowered position set based on the operating position of the work implement lifting lever 72.

In the present embodiment, the work implement inclination setting member 731 includes an automatic control inclination setting member 732 for setting the work implement 10 to a predetermined inclination angle, and a manual inclination for manually operating the inclination angle of the work implement 10. And a setting member 733.
The work implement system control unit 80c is configured such that the inclination angle of the work implement 10 detected by the work implement inclination sensor 83 according to the inclination angle set by the automatic control inclination setting member 732 is the set inclination angle. The operation of the tilt drive device 18 is controlled so that
Further, the work machine system control unit 80 c operates the tilt driving device 18 in accordance with the operation amount operated by the manual tilt setting member 733.

The working posture setting member 73 includes a tilling depth setting member 735 that sets the tilling depth D of the work implement 10.
The work implement system control unit 80c determines that the tillage depth D of the work implement 10 detected by the rear cover sensor 88 according to the tillage depth setting value set by the tillage depth setting member 735 is the tillage depth setting. The raising / lowering drive device 15 is controlled to have a value.

Further, in the present embodiment, the work machine system control unit 80c is configured to perform the predetermined operation when the work machine 10 is positioned below a predetermined reference lift position during the lowering operation of the work machine 10. The elevating drive device 15 is controlled (lowering cushion control) so that the lowering speed of the work implement 10 is slower than the case where it is positioned above the reference elevating position.
The work vehicle 1 includes a lower cushion setting member 75 for changing the reference lift position, and the work machine system control unit 80c responds to the operation of the lower cushion setting member 75 with respect to the reference lift. The lower cushion control is performed after changing the position.

In the present embodiment, the working vehicle 1 has a PTO operation member 76 as the operation member, as shown in FIG.
The PTO system operation member 76 includes a PTO output operation member 761 for performing intermittent operation of power transmission to the PTO shaft 61.
The working vehicle 1 has a PTO clutch hydraulic cylinder 58 that operates the PTO clutch 56, and the PTO system control unit 80 b controls the PTO clutch hydraulic cylinder 58 in accordance with the operation of the PTO output operation member 761. The operation is controlled, and the PTO clutch 56 is switched between on and off.

In the present embodiment, the working vehicle 1 has a main clutch detection sensor 87 that detects the on / off state of the forward clutch 522 and the reverse clutch 523 in the forward / reverse switching device 52.
Further, the PTO system operation member 76 is a PTO system control switching member 762 that can switch the intermittent control mode of the PTO clutch 56 according to the intermittent state of the forward / reverse switching device 52 and / or the up / down state of the work implement 10. Contains.
The PTO control switching member 762 moves the PTO control switch 762 according to the operation of the PTO output operation member 761 when either the forward clutch 522 or the reverse clutch 523 is in a power transmission state (main clutch ON state). The operation of the PTO output operation member 761 is performed when it is detected that the work implement 10 is located at a predetermined lowered position (work position) by the interlock mode in which the clutch 56 is engaged and the work machine lift position sensor 81. Accordingly, when the PTO clutch 56 is disengaged and the work implement lifting position sensor 81 detects that the work implement 10 is raised to a predetermined position, the PTO output operation member 761 is operated. Ascending / descending interlock mode for releasing the connection of the PTO clutch 56, the forward / reverse switching device (main clutch) 52 being connected, Regardless vertical position of the work machine 10 according to the operation of the PTO output operating member 761 is configured to be taken and independent mode intermittently the PTO clutch 56.
That is, when the PTO output operation member 761 is turned on in the interlocking mode of the PTO control switching member 762, the PTO system control unit 80b determines that the PTO clutch 56 if the main clutch 52 is in an ON state. However, if the main clutch 52 is in an OFF state, the PTO clutch 56 is not controlled to shift to the engaged state.
Further, when the PTO output operation member 761 is turned on in the ascending / descending interlock mode of the PTO control switching member 762, the PTO system control unit 80b detects the work implement 10 detected by the work implement lift position sensor 81. The PTO clutch 56 is controlled to be in an engaged state if the lifting / lowering position is at a predetermined lowering position. During the operation, the PTO clutch 56 is not controlled to shift to the engaged state.

  In the present embodiment, the working vehicle 1 includes a cabin 9 supported directly or indirectly by the machine body frame 2 as shown in FIG. The cabin 9 is formed so as to surround the front upper side and the inner side in the body width direction of the pair of left and right traveling devices 4 (in the present embodiment, the pair of left and right rear wheels 4a) behind the engine 3. The pair of left and right fenders 91 are provided.

FIG. 5 is a plan view of the cabin inside the work vehicle 1 shown in FIGS. 1 and 2.
As shown in FIG. 5, the cabin 9 includes a floor member 94 that defines the bottom of the cabin 9 and a driver seat 92 that is installed between the fenders 91. A plurality of operation members are installed in front and side of the driver seat 92.

FIG. 6 is a front perspective view of the vicinity of the driver's seat inside the cabin shown in FIG.
As shown in FIGS. 5 and 6, the floor member 94 has a first floor member 941 for a driver to place his / her foot in front of the driver seat 92 and an upper surface between the pair of left and right fenders 91. And a second floor member 942 on which the driver seat 92 is installed.

The operation part structure arrange | positioned at the said cabin 9 of the said working vehicle 1 in this Embodiment is demonstrated.
As shown in FIGS. 5 and 6, the operation unit structure includes a lever guide 97 disposed on one side of the driver seat 92 in the body width direction (here, the right side in the traveling direction), a plurality of manipulable operation members, An armrest 93 is provided.
The lever guide 97 is configured to straddle the fender 91 and the floor member 94 extending between the driver seat 92 and the fender 91 disposed on one side of the driver seat 92 in the body width direction.
The armrest 93 is configured such that an armrest main body 931 on which an operator can place an arm is located above the lever guide 97 and in the middle of the lever guide 97 in the body width direction.
And at least one said operation member is each arrange | positioned in the body width direction inner side and outer side on both sides of the said armrest main body 931. As shown in FIG.
In the present embodiment, the work implement lifting lever 72 is disposed on the inner side in the body width direction of the armrest body 931, and the work posture setting member 73 is provided on the outer side in the body width direction. A machine setting operation panel 95 is arranged.

  According to the above configuration, since at least one operation member is disposed on the inner side and the outer side in the body width direction across the armrest body 931, all of the plurality of operation members are in the body width direction from the armrest body. Compared to the conventional configuration arranged on the outer side, an unintentional erroneous operation can be effectively prevented.

FIG. 7 shows a side view of the vicinity of the armrest in the cabin shown in FIGS. 5 and 6 when viewed from the driver's seat outward in the body width direction. FIG. 7 shows a state where the lever guide 97 is removed.
In the present embodiment, as shown in FIGS. 6 and 7, the armrest 93 is positioned in a gap between the driver seat 92 and the fender 91 disposed on one side in the vehicle width direction of the driver seat 92. In this way, it is supported by a bracket 932 erected on the floor member 94. More specifically, the bracket 932 is erected on the second floor member 942.
By providing the above configuration, the armrest body 931 is not connected to the seat portion of the driver seat 92, so that only the seat portion of the driver seat 92 can be removed without removing the armrest 93.
Therefore, compared with the conventional armrest in which the armrest body is supported on the seat of the driver's seat via the support member, the specification of the driver's seat is changed (for example, whether there is a suspension provided on the support of the seat or the seat In addition, it is possible to flexibly cope with the change of the shape of the driver's seat and the like, and to improve the efficiency of the driver's seat demounting operation.

In the present embodiment, as shown in FIGS. 5 to 7, the work implement elevating lever 72 is rotatable about a rotation shaft 721 along the machine body width direction between the driver seat 92 and the fender 91. The bracket 932 is supported directly or indirectly so as to be.
The armrest 93 is supported by the bracket 932 via a mounting plate 933 so that the armrest main body 931 is positioned outward of the work implement lifting lever 72 in the machine body width direction.
Further, as shown in FIG. 6, the lever guide 97 allows the upper end portion that is the operation portion of the work implement lifting lever 72 and the upper end portion of the mounting plate 933 to extend upward while allowing the bracket 932 to extend. Is surrounding.

According to the above-described configuration, the work implement lifting lever 72 that requires a relatively large installation space to be rotated around the rotation shaft 721 uses the gap between the driver seat 92 and the fender 91. The operation unit structure can be made compact.
Moreover, since the armrest 93 and the work implement lifting lever 72 are supported by the single bracket 932, the support structure of both members can be simplified.

  The bracket 932 is preferably fixed to the fender 91. Thereby, the bracket 932 can be supported more stably.

In the present embodiment, the work posture setting member 73 is provided on the work machine setting operation panel 95 arranged on the outer side in the machine width direction of the armrest body 931 as described above.
FIG. 8 shows a plan view of a work implement setting operation panel in the operation unit structure according to the present embodiment.
In the present embodiment, as shown in FIG. 8, the working machine setting operation panel 95 includes the working depth setting member 735, the automatic control inclination setting member 732, and the working machine ascending as the work posture setting member 73. A position setting member 734 and the manual inclination setting member 733 are provided.
In the present embodiment, the work implement setting operation panel 95 is further provided with the lower cushion setting member 75.
The plowing depth setting member 735, the automatic control tilt setting member 732, the work implement raising position setting member 734, and the lower cushion setting member 75 are dial type operation members provided on the upper surface of the work implement setting operation panel 95. The manual inclination setting member 733 is a lever-type operation member provided on the upper surface of the work implement setting operation panel 95.
As shown in FIGS. 5 and 6, the work machine setting operation panel 95 is installed on the lever guide 97 extending above the fender 91 on one side in the machine width direction.
In the present embodiment, the work implement setting operation panel 95 includes a lid member 951 capable of integrally covering the automatic control tilt setting member 732, the work implement lift position setting member 734, and the lower cushion setting member 75. Have. A setting member that is less frequently used during operations such as tillage is covered with the lid member 951, so that erroneous operations during the operation can be more effectively prevented.

FIG. 9 is an enlarged view of the rear part in the vicinity of the driver's seat inside the cabin shown in FIGS.
In the present embodiment, as shown in FIG. 9, the working machine elevating lever 72 has a virtual width direction inner surface in which an upper end portion as an operation portion extends the upper surface 931 a of the armrest body 931 to the inner side in the machine width direction. It is located below A1.
With the above-described configuration, while improving the operability of the work implement lifting lever 72, the operator's arm or the like hits the work implement lift lever 72 against the intention, and the work implement lift lever 72 is erroneously operated. This can be effectively prevented.

Further, as shown in FIG. 9, the armrest main body 931 has an inclined surface whose upper surface becomes lower as it goes inward in the body width direction.
By having the said structure, a driver | operator can mount an arm on the said armrest main body 931 with the stable attitude | position. Further, the operability of the operation member (in the present embodiment, the work implement lifting lever 72 in this embodiment) located on the inner side in the body width direction from the armrest body 931 in a state where the arm is placed on the armrest body 931. Can be improved.

In the present embodiment, as shown in FIGS. 5 and 7, the armrest body 931, the work implement lifting lever 72, and the work posture setting member 73 (the work implement setting operation panel 95) are related to the longitudinal position of the machine. At least partially overlap.
Further, as shown in FIGS. 5 to 7, the armrest 93 includes a front extending portion 934 extending forward from the armrest body 931 so as to be positioned in front of the work posture setting member 73.
The traveling system operation member 71 is disposed in the front extending portion 934.
Specifically, the speed change operation member 711 is disposed on the outer side surface 934a in the body width direction of the front extending portion 934.
Further, in the present embodiment, the highest speed setting member 712 is disposed on the upper surface 934 b of the front extension 934.
By having the above configuration, the armrest body 931, the work implement elevating lever 72, and the work posture setting member 73 are disposed in a compact manner, and the armrest body 931 is relatively frequently used with the arm placed on the armrest body 931. The high shift operation member 711 can be easily operated.
In other words, the forward extension portion 934 extending forward from the armrest body 931 is provided, and the speed change operation member 711 is further provided on the outer side surface 934a of the forward extension portion 934 in the body width direction. By placing the arm on the armrest main body 931 while facing, the shift operation member 711 can be accessed in a state where free space exists above and below the wrist. Accordingly, it is possible to improve the operability of the shift operation member 711 that is frequently used.

In the present embodiment, as shown in FIGS. 5 and 9, the armrest body 931 is positioned below a virtual rear surface A2 (the same surface as the virtual width direction inner surface A1) obtained by extending the upper surface 931a of the armrest body 931 rearward. Thus, the PTO operation member 76 is provided on the upper surface of the lever guide 97 on the rear side of the armrest body 931.
By having the said structure, the said PTO type | system | group operating member 76 can be arrange | positioned compactly, preventing the misoperation to the said PTO type | system | group operating member 76.

  In the present embodiment, the PTO output operation member 761 is a push button, and the PTO control switching member 762 is a mode selection dial. The PTO output operation member 761 and the PTO control switching member 762 are disposed at substantially the same position in the longitudinal direction of the machine body. Further, the PTO output operation member 761 is disposed on the outer side in the body width direction from the PTO control switching member 762.

Hereinafter, the structure of the armrest 93 in the present embodiment will be described in more detail.
FIG. 10 shows an internal perspective view of the armrest structure in the present embodiment. FIG. 10 is a perspective view of the armrest 93 as viewed from the side opposite to the driver's seat in the body width direction (the fender 91 side on the one side in the body width direction). FIG. 11 shows an enlarged perspective view of the vicinity of the armrest body of the armrest structure shown in FIG.
In the present embodiment, the armrest body 931 is supported by the mounting plate 933 fixed to the bracket 932 as described above.
As shown in FIGS. 10 and 11, the mounting plate 933 includes a first mounting plate 935 fixed to the bracket 932, and a second mounting plate that is mounted on the first mounting plate 935 so that the longitudinal position of the machine body can be adjusted. 936.
The armrest main body 931 is attached to the second attachment plate 936 so that the position of the armrest main body 931 can be adjusted around the rotation shaft 9373 along the body width direction.

By having the above-described configuration, it is possible to adjust the relative position of the armrest body 931 in the front-rear direction of the vehicle body with respect to the driver seat 92 and the relative position around the rotation shaft 9373, thereby installing the armrest body 931. The position can be easily adjusted to the physique and work content of the pilot.
Further, by positioning the armrest body 931 around the rotation shaft 9373 so that the free end portion of the armrest body 931 faces upward, the armrest body 931 gets in the way when getting in and out of the driver seat 92. Can be effectively prevented.

In this embodiment, as shown in FIGS. 7 and 10, the bracket 932 includes a rod-like body 9321 formed into a rod shape by bending a flat plate member so as to have a U-shape in plan view, and the rod-like body 9321. The bottom member 9322 is fixed to the second floor member 942. The bracket 932 is fixed in a state in which the side opening of the rod-shaped body 9321 is directed to the first side in the body width direction (the outer side in the body width direction).
As shown in FIGS. 10 and 11, the first mounting plate 935 is fixed to the first side of the bracket 932 in the body width direction at the upper end portion of the bracket 932. The first mounting plate 935 is fixed to the side of the upper end of the rod-shaped body 9321 of the bracket 932 so as to cover the side opening of the rod-shaped body 9321 in the longitudinal direction of the body. The first mounting plate 935 includes a first side surface 9351 extending in the longitudinal direction of the machine body, a first side surface 9351 attached to the bracket 932, and a second side surface 9352 substantially parallel to the first side surface 9351. A flat plate-like shape connecting the first side surface 9351 and the second side surface 9352 so that the second side surface 9352 is positioned on the first side in the vehicle width direction from the first side surface 9351 (separated from the driver seat 92). A connecting portion 9353.
The second mounting plate 936 includes a side surface 9361 to which the first mounting plate 935 is mounted, and an upper surface 9362 extending from the upper end of the side surface 9361 to the first side in the body width direction. In the second mounting plate 936, the side surface 9361 of the second mounting plate 936 is positioned on the second side in the body width direction (the inner side in the body width direction) of the second side surface 9352 of the first mounting plate 935. And attached to the first attachment plate 935.

Any one of the first mounting plate 935 and the second mounting plate 936 is provided with a hole 9354 for a fastening member 9364 such as a bolt, and either the first mounting plate 935 or the second mounting plate 936 is provided. On the other side, a long hole 9363 is provided along the longitudinal direction of the machine body at a position corresponding to the hole 9354, and the fastening member 9364 is inserted into the hole 9354 and the long hole 9363, and the fastening is performed. The first mounting plate 935 and the second mounting plate 936 are fixed by a member 9364.
More specifically, as shown in FIGS. 10 and 11, the hole 9354 is provided in the second side surface 9352 of the first mounting plate 935, and the elongated hole 9363 is formed in the second mounting plate 936. Provided on the side surface 9361, the fastening member 9364 is supported and fixed in a state where the fastening member 9364 is inserted along the body width direction.
With the above configuration, when the second mounting plate 936 is adjusted in the longitudinal direction of the machine body with respect to the first mounting plate 935, the fastening member 9364 is loosened to some extent, and the long hole 9363 has the The second mounting plate 936 can be moved in the longitudinal direction of the body relative to the first mounting plate 935 so as to change the relative position of the fastening member 9364.

  In the present embodiment, the first mounting plate 935 is provided with two holes 9354 in the longitudinal direction of the fuselage, and the second mounting plate 936 is elongated in the longitudinal direction of the fuselage. The two long holes 9363 are provided. Thereby, the position of the second mounting plate 936 can be adjusted in the longitudinal direction of the body relative to the first mounting plate 935 while keeping the angle of the upper surface 931a of the armrest body 931 constant.

In the present embodiment, as shown in FIGS. 10 and 11, the armrest main body 931 has a side surface 9371 extending substantially in the vertical direction and an upper surface 9372 extending from the upper end of the side surface 9371 to the first side in the body width direction. An armrest plate 937 is provided.
The pivot shaft 9373 is fixed to the side surface 9371 so as to extend from the side surface 9371 to the first side in the body width direction.
On the other hand, the second mounting plate 936 is provided with a boss portion 9365 into which the rotation shaft 9373 is inserted, and the rotation shaft 9373 is connected to the boss portion 9365 from the second side in the body width direction of the boss portion 9365. The armrest body 931 is detachably connected to the second mounting plate 936 by being inserted into the second mounting plate 936.
With the above configuration, the armrest body 931 having different specifications can be mounted on the second mounting plate 936 without changing the bracket 932, the first mounting plate 935, and the second mounting plate 936. For example, without changing the bracket 932, the first mounting plate 935, and the second mounting plate 936, one armrest main body provided with an operating member and another armrest main body not provided with the operating member The second mounting plate 936 can be selectively mounted.
The armrest plate 937 may have a second side surface extending downward from the first side end of the upper surface 9372 in the body width direction.

In the present embodiment, as shown in FIGS. 10 and 11, the rotation shaft 9373 is fixed in the vicinity of the rear end portion of the armrest plate 937, and the boss portion 9365 is the second mounting plate 936. Are fixed to the rear end portion and the upper end portion.
A fixing member 9375 such as a nut is attached to the first end portion in the body width direction of the rotating shaft 9373 with the rotating shaft 9373 inserted through the boss portion 9365.
Further, between the boss 9365 and the fixing member 9375, an elastic member 9376 (in this embodiment) that urges the rotating shaft 9373 to the first side in the body width direction via the fixing member 9375. A disc spring and a washer are inserted.
With the above configuration, the boss portion 9365 of the second mounting plate 936 is pressed against the side surface 9371 of the armrest plate 937 while having elasticity. That is, the armrest main body 931 can be rotated around the rotation shaft 9373 with a frictional resistance. Accordingly, even when the armrest body 931 is rotatable about the rotation shaft 9373 and the hand is released from the armrest body 931 during the rotation, the armrest body 931 suddenly falls down and the speed change is performed. It is possible to effectively prevent the operation member 711 and the maximum speed setting member 712 from being shocked. Further, the armrest body 931 can be held by the elastic force of the elastic member 9376 at a predetermined rotation position.

  In the present embodiment, the rear end side of the upper surface 9372 of the armrest plate 937 and the rear end side of the side surface 9361 of the second mounting plate 936 come into contact with each other, so that the rotation shaft 9373 of the armrest body 931 is contacted. The rotation range on one side of the rotation is restricted, and the upper surface 9372 of the armrest plate 937 and the upper surface 9362 of the second mounting plate 936 come into contact with each other, so that the rotation shaft 9373 of the armrest body 931 is rotated on the other side. The rotation range is restricted.

In addition, a cushion member 9366 that can come into contact with the upper surface 9372 of the armrest plate 937 from below is attached to the front portion of the upper surface 9362 of the second mounting plate 936. More specifically, the cushion member 9366 is made of a member having elasticity such as rubber, and is fixed in a state of being engaged with an engagement hole 9367 provided in the upper surface 9362 of the second mounting plate 936. Yes.
By providing the above-described configuration, the cushion member 9366 is in contact with the armrest plate 937 in the use state where the arm is placed on the armrest main body 931. Therefore, the cushion member 9366 and the boss portion 9265 allow the The armrest plate 927 is stably supported with respect to the second mounting plate 936 without wobbling from side to side. Accordingly, the armrest body 931 can be stably supported in the use state while the armrest body 931 can be rotated about the rotation shaft 9373.
Further, by preventing the armrest main body 931 from coming into direct contact with the armrest plate 937, an impact is applied to the speed change operation member 711 and the maximum speed setting member 712 while preventing the generation of impact sound at the time of contact. It can be prevented from joining.

In the present embodiment, as shown in FIG. 7, the work implement lifting lever 72 is directly or indirectly attached to the bracket 932 on one side of the bracket 932 in the front-rear direction of the machine body (the front side in the present embodiment). It is supported.
The control device 8 is disposed on the other side of the bracket 932 in the front-rear direction of the machine body (rear side in the present embodiment), and the control device 8 is surrounded by the lever guide 97.
By having the said structure, the said control apparatus 8 can be efficiently arrange | positioned using the said clearance gap between the said driver's seat 92 and the said fender 91. FIG. In particular, when the lever guide 97 or the armrest 93 is provided with an operation member, wiring between the operation member and the control device 8 can be performed efficiently.
The control device 8 may be fixed to the fender 91 or may be directly or indirectly supported by the bracket 932.
In addition, a wiring that electrically connects the operation member attached to the armrest 93 and the control device 8 may be inserted into a space formed by the armrest cover 928 and the upper surface 9372 of the armrest plate 927.

Below, a more detailed structure is demonstrated about the armrest structure which has the said front extension part 934 extended from the said armrest main body 931 to the front.
FIG. 12 shows an enlarged plan view in the vicinity of the armrest inside the cabin shown in FIGS.
In the present embodiment, as shown in FIGS. 5 and 12, the armrest main body 931 is substantially along the front-rear direction of the machine body, and the front extending portion 934 is outward in the machine body width direction as it goes forward. It is inclined outward in the body width direction in plan view so as to be positioned.
With the above configuration, the shift operation member 711 can be accessed in a natural posture with the wrist bent outward with respect to the arm with the palm facing inward, and the operability of the shift operation member 711 is improved. It can be improved further.

Further, as shown in FIG. 12, the armrest body 931 includes a central region 9311 located in the center of the longitudinal direction of the machine body and a transition region 9312 located between the central region 9311 and the front extending portion 934. Yes.
Then, an outer side surface 9312a in the body width direction of the transition area 9312 is inclined inward in the body width direction in plan view so as to be located inward in the body width direction as it goes forward.
By having the said structure, a wrist can be freely moved in the case of operation of the said speed change operation member 711, Thereby, the operativity of the said speed change operation member 711 can be improved more.

Further, the armrest structure is configured such that a virtual plane A3 obtained by extending the machine width direction outer side surface 934a in the central region 9311 to the front side intersects the machine width direction outer side surface 934a of the front extension portion 934. Yes.
By having the above-described configuration, when the shift operation member 711 is operated while placing an elbow on the armrest body 931, the posture of the state where the operator's arm is opened outward in the body width direction from the elbow to the hand; Therefore, the shift operation member 711 can be rotated in an easy posture with the elbow placed on the armrest body 931 and the hand naturally extended, and the operability of the shift operation member 711 is further improved. be able to.

Further, as shown in FIG. 9, an outer side surface 934a of the front extending portion 934 is inclined upward (that is, inclined upward with respect to the vertical surface).
By having the above-mentioned configuration, when operating the speed change operation member 711 while placing an elbow on the armrest body 931, the palm is slightly downward, so that the operation when operating the speed change operation member 711 with a fingertip is easy. The operability of the speed change operation member 711 can be further improved.

Further, as described above, the upper surface 931a of the armrest body 931 has an inclined surface that becomes lower as it goes inward in the body width direction.
As shown in FIG. 9, the speed change operation member 711 is located above a plane on which the upper surface 931a of the armrest body 931 is located.
With the above configuration, the speed change operation member 711 can be operated in a stable posture with the arm placed on the armrest body 931.

In the present embodiment, the speed change operating member 711 is a dial type for steplessly shifting the continuously variable transmission 51 provided in the work vehicle 1 as shown in FIGS. It is a speed change operation member.
As shown in FIGS. 10 and 12, the speed change operation member 711 rotates relative to the operation shaft 7111 intersecting the outer side surface 934 a of the front extension portion 934 and the front end portion of the operation shaft 7111. And a rotation operation unit 7112 that is mounted impossible. More specifically, the operation shaft 7111 is directed slightly upward from an axis perpendicular to the body width direction outer side surface 934a of the front extension portion 934.
10 and 12, the highest speed setting member 712 is substantially the same as the upper surface 931a of the armrest body 931 in a state in which the tip portion extends upward from the upper surface 934b of the front extending portion 934. The arm portion 7122 is configured to be swingable around a parallel swing shaft 7121, and the swing operation portion 7123 is fixed to the distal end portion of the arm portion 7122.
According to the above configuration, the speed change operation member 711 and the maximum speed setting member 712 forming the travel system operation member 71 are respectively attached to the body width direction outer side surface 934a and the upper surface 934b of the front extension portion 934 of the armrest 93. Since they are arranged, it is possible to improve the operability of the traveling system operation member 71 while preventing an erroneous operation.
That is, the shift operation member 711 having a high frequency of use is disposed on the outer side surface 934a in the body width direction of the front extension portion 934, and the highest speed setting member 712 having a relatively low frequency of use is an upper surface of the front extension portion 934. The two operation members 711 and 712 that form the traveling system operation member 71 in a state of being disposed at 934 b are collectively disposed at the front extension portion 934 in the armrest 93. Therefore, while preventing the erroneous operation between the operation members 711 and 712, the operation members 711 and 712 are arranged close to each other, thereby improving the operability and making the frequently used shift operation member 711 in an easily accessible position. It is possible to improve the operability due to the arrangement.

FIG. 13 is an enlarged right side view of the vicinity of the front extension 934 of the armrest disposed inside the cabin shown in FIGS. 5 to 9.
In the present embodiment, a guard part 9341 that partially surrounds the rotation operation part 7112 is provided on the outer side surface 934a in the body width direction of the front extension part 934, as shown in FIG. Yes.
The guard portion 9341 is located in a space located rearward and downwardly among the four spaces defined by the virtual vertical plane A4 and the virtual horizontal plane A5 passing through the operation shaft 7111 when viewed along the axis of the operation shaft 7111. A center is located, and the rotation operation unit 7112 is configured to surround the operation shaft 7111 around the operation shaft 7111 within a range smaller than 180 degrees.
By having the above-described configuration, the operator's hand is against the rotation operation unit 7112 when the maximum speed setting member 712 is operated while preventing the operability of the rotation operation unit 7112 from being deteriorated. It is possible to effectively prevent contact.

In the present embodiment, as shown in FIGS. 12 and 13, the forward extension portion 934 is formed with a raised portion 9342 that protrudes outward in the aircraft width direction from the outer surface 934 a in the aircraft width direction. The shift operation member 711 is provided on the raised portion 9342.
By having the said structure, the said rotation operation part 7112 of the said speed change operation member 711 can be made easy to hold, and operativity can be improved more.
In the present embodiment, the raised portion 9342 is provided with the guard portion 9341.
The raised portion 9342 has a truncated cone shape. Further, the raised portion 9342 is provided in the vicinity of the front end portion of the front extending portion 934.

  Further, in the present embodiment, as shown in FIG. 13, the guard portion 9341 substantially fits in a space located behind and below the four spaces defined by the virtual vertical plane A4 and the virtual horizontal plane A5. The arc shape is as follows.

In the present embodiment, the upper surface 934b of the front extension 934 is substantially the same as the swing shaft 7121 when viewed along the swing shaft 7121 of the maximum speed setting member 712, as shown in FIG. It has a concentric arc shape.
Further, a guide hole 9343 that allows the arm portion 7122 of the highest speed setting member 712 to rotate about the swing shaft 7121 is formed on the upper surface 934 b of the front extension portion 934.
By having the said structure, since the said highest speed setting member 712 can be operated in the state which put the finger | toe along the surface of the said front extension part 934, operativity can be improved.

In FIG. 14, the internal perspective view of the front extension part vicinity of the armrest structure in this embodiment is shown.
In the present embodiment, as shown in FIGS. 10, 13 and 14, the maximum speed setting member 712 has a predetermined operation provided at equal intervals within a predetermined rotation range around the swing shaft 7121. A locking mechanism 7124 that can lock the arm portion 7122 is provided for each range.
Specifically, the locking mechanism 7124 is a plate member 7125 fixed to the armrest plate 937 and having a side surface perpendicular to the rocking shaft 7121, and a plurality of locking mechanisms are arranged at regular intervals around the rocking shaft 7121. A plate member 7125 in which a stop hole 7126 is formed and an engagement member 7127 that can rotate around the swing shaft 7121 together with the arm portion 7122, and the swing shaft 7121 so as to face the locking hole 7126. And an engagement member 7127 having an engagement protrusion 7128 provided in a direction along the direction.
The engagement member 7127 is directly or indirectly supported by the arm portion 7122 in a state where the engagement protrusion 7128 can advance and retreat in a direction along the swing shaft 7121, and the engagement protrusion 7128 is It is biased in a direction approaching the plate member 7125 via an elastic member such as a spring.

Further, the arm portion 7122 is biased in a direction approaching the plate member 7125.
Specifically, as shown in FIG. 14, a fastening member 7129 such as a nut is provided on the opposite side of the swing shaft 7121 from the arm portion support portion with respect to the plate member 7125 of the swing shaft 711. The urging member 7130 configured by a disc spring and a washer is fitted on the swing shaft 7121 between the fastening member 7129 and the plate member 7125.
By having the above configuration, not only the engagement member 7127 but also the arm portion 7122 is urged in the direction approaching the plate member 7125, so the engagement member 7125 does not increase the urging force. The protrusion 7128 can be reliably engaged with the locking hole 7126. For this reason, it is possible to obtain a clear resolution by reliably locking the highest speed setting member 712 for each of the locking holes 7126 while reducing the operational feeling of the highest speed setting member 712.
In the present embodiment, the engagement member 7127 is removable.
Therefore, when it is not necessary to lock the highest speed setting member 712 at every predetermined resolution (for example, when adopting stepless adjustment), the specification can be easily changed by removing the engaging member 7127. be able to.

In the present embodiment, the armrest main body 931 has an armrest cover 938 fixed to the upper surface 9372 of the armrest plate 937 as shown in FIGS. 12 and 13.
A rubber anti-slip member 9381 is affixed to the upper surface of the armrest cover 938, and the anti-slip member 9381 forms an upper surface 931 a of the armrest body 931. 10 and 11, the anti-slip member 9381 is shown, but the armrest cover 938 is not shown.
As shown in FIGS. 12 and 13, the armrest cover 938 has an upper cover 938 a and a lower cover 938 b that are vertically divided at the raised portion 9342.

In this embodiment, as shown in FIG. 5, the second transmission member 532 between the driver's seat 92 and the fender on the other side (left side) in the body width direction is operated to operate the auxiliary transmission 53. The auxiliary transmission operation member (sub transmission lever) 77 is erected.
Further, as shown in FIGS. 5 and 6, the PTO speed change operation member 78 for operating the PTO speed change device 59 has the first floor member 941 and the second floor in front of the auxiliary speed change operation member 77. It is provided so as to extend forward from an inclined member 943 connecting the member 942.
Further, a forward / reverse switching operation member 79 for operating the forward / reverse switching device 52 is provided on the other side in the body width direction of the steering column 96 provided in front of the driver seat 92.
The work implement up / down operation member 74 is provided on one side of the steering column 96 in the machine width direction.
A main clutch pedal 70 for turning on / off the main clutch (the forward / reverse switching device 52) is provided on the other side in the body width direction in front of the driver seat 92.

FIG. 1 is a side view of a working vehicle to which an operation unit structure according to an embodiment of the present invention is applied. FIG. 2 is a schematic diagram of transmission of the working vehicle shown in FIG. FIG. 3 is a control block diagram of the traveling system and the PTO system of the working vehicle shown in FIGS. 1 and 2. FIG. 4 is a control block diagram of the work machine system of the work vehicle shown in FIGS. 1 and 2. FIG. 5 is a plan view of the cabin inside the working vehicle shown in FIGS. 1 and 2. FIG. 6 is a front perspective view of the vicinity of the driver's seat inside the cabin of the working vehicle shown in FIGS. 1 and 2. FIG. 7 is a side view of the vicinity of the armrest in the cabin shown in FIGS. 5 and 6 when viewed from the driver's seat outward in the body width direction. FIG. 8 is a plan view of a work implement setting operation panel in the operation unit structure according to the present embodiment. FIG. 9 is an enlarged partial rear view of the vicinity of the driver's seat inside the cabin shown in FIGS. FIG. 10 is an internal perspective view of the armrest structure in the present embodiment. FIG. 11 is an enlarged view of the vicinity of the armrest body of the armrest structure shown in FIG. FIG. 12 is an enlarged plan view in the vicinity of the armrest inside the cabin shown in FIGS. FIG. 13 is an enlarged right side view of the vicinity of the front extension portion of the armrest disposed inside the cabin shown in FIGS. 5 to 9. FIG. 14 is an internal perspective view of the vicinity of the front extension portion of the armrest structure in the present embodiment.

DESCRIPTION OF SYMBOLS 1 Working vehicle 10 Working machine 51 Continuously variable transmission 61 PTO shaft 71 Traveling system operation member 711 Shift operation member 712 Maximum speed setting member 72 Work machine elevating lever (operation member)
721 Rotating shaft 73 of work implement lifting lever Working posture setting member (operation member)
731 Work implement inclination setting member 76 PTO system operation member 761 PTO output operation member 91 Fender 92 Driver's seat 93 Armrest 931 Armrest body 932 Bracket 933 Mounting plate 934 Front extension 94 Floor member 97 Lever guide A1 Virtual width direction inner surface A2 Virtual Rear side

Claims (6)

An operation part structure of a working vehicle in which a lever guide, a plurality of manipulable operation members and an armrest are arranged on one side of the driver's seat in the body width direction,
The lever guide is configured to straddle the fender and a floor member extending between the driver seat and a fender disposed on one side of the driver seat in the body width direction,
The armrest is configured such that an armrest body on which an operator can place an arm is positioned above the lever guide and in the middle of the lever guide in the body width direction,
The operation member includes a work implement lifting lever for raising and lowering a work implement attached to the work vehicle, and a work posture setting member including a work implement inclination setting member for setting an inclination of the work implement with respect to the work vehicle, A travel system operation member including a speed change operation member for operating a speed change device provided in the work vehicle,
The work implement elevating lever is directly or indirectly supported by a bracket standing on the floor member so as to be rotatable about a rotation axis along the width of the machine body between the driver's seat and the fender. And
The armrest is supported by the bracket via a mounting plate so that the armrest main body is located on the outer side in the machine body width direction from the work machine elevating lever and is located on the inner side in the machine body width direction from the work posture setting member. And
The lever guide surrounds the bracket while allowing an upper end portion that is an operation portion of the work implement lifting lever and an upper end portion of the mounting plate to extend upward,
The armrest body, the work implement lifting lever and the work posture setting member are at least partially overlapped with respect to the longitudinal position of the machine body,
The armrest includes a front extending portion that extends forward from the armrest main body so as to be positioned in front of the work posture setting member.
The operation part structure of a working vehicle, wherein the speed change operation member is disposed on an outer side surface in the body width direction of the front extension part . The traveling system operation member includes a maximum speed setting member that sets a maximum speed output value of the transmission,
The operation part structure for a working vehicle according to claim 1 , wherein the highest speed setting member is disposed on an upper surface of the front extension part. An operation part structure of a working vehicle in which a lever guide, a plurality of manipulable operation members and an armrest are arranged on one side of the driver's seat in the body width direction,
The lever guide is configured to straddle the fender and a floor member extending between the driver seat and a fender disposed on one side of the driver seat in the body width direction,
The armrest is configured such that an armrest body on which an operator can place an arm is positioned above the lever guide and in the middle of the lever guide in the body width direction,
At least one of the operation members is disposed on the inner side and the outer side in the body width direction across the armrest body,
The operation member has a PTO system operation member including a PTO output operation member for performing intermittent operation of power transmission to the PTO shaft provided in the work vehicle,
The PTO operation member is provided on the upper surface of the lever guide on the rear side of the armrest body so as to be positioned below a virtual rear surface extending from the upper surface of the armrest body to the rear side. the operation unit structure of that work vehicle. The operation member includes a work implement lifting lever for raising and lowering a work implement attached to the work vehicle, and a work posture setting member including a work implement inclination setting member for setting the inclination of the work implement with respect to the work vehicle. Have
The work implement elevating lever is directly or indirectly supported by a bracket standing on the floor member so as to be rotatable about a rotation axis along the width of the machine body between the driver's seat and the fender. And
The armrest is supported by the bracket via a mounting plate so that the armrest body is located outward of the work machine lifting lever in the body width direction,
The lever guide, according to claim 3, characterized in that the upper part of the an operation unit of the working machine lifting lever upper portion and the mounting plate surrounds the bracket while allowed to extend upwardly The operation part structure of the working vehicle as described in. The upper end of the work implement lifting lever is positioned below an inner surface in the virtual width direction in which an upper surface of the armrest body is extended inward in the body width direction . The operation part structure of the working vehicle as described in 2 or 4 . The operation part structure of a working vehicle according to any one of claims 1 to 5 , wherein the armrest body has an inclined surface whose upper surface becomes lower as it goes inward in the body width direction.

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