JP5732747B2 - Combine - Google Patents

Description

  The present invention relates to a combine.

  Conventionally, for example, Patent Document 1 discloses a technique of installing a footrest on which a driver's foot is placed at a position above a step on the front side of a driver's seat.

JP 2001-69843 A

  For example, when harvesting cereals that are lying down, the visibility is improved when viewed from a high position, and the weeding situation is particularly visible. There is a case of driving in a state where In such a case, since the foot does not reach the upper surface of the step, the driving operation can always be performed with an easy posture by using the footrest.

  As a result, the present invention is arranged by placing the footrest above the upper surface of the step seat and disposing the brake pedal for operating the parking brake by a stepping operation near the right side thereof. It is intended to provide technical means that can perform the brake operation accurately while performing the operation in an easy posture.

The present invention takes the following technical means to solve the above problems.
Specifically, according to the first aspect of the present invention, the footrest (11) on which the driver's feet are placed is attached to the upper side of the step seat (10) provided on the front side of the driver's seat (5). Brake pedal (15) that activates the parking brake by a stepping operation is disposed near the right side of)), and the brake pedal (15) has a stepping operation surface from a position higher than the upper surface of the footrest (11). It is configured to be able to be stepped on to a position lower than the upper surface of the platform (11), and the foot platform (11) can be attached to and detached from the step support frame (9) integrally with the step seat (10) , The footrest (11) is provided with a tool storage portion capable of storing tools, and the footrest (11) is guided through a concave groove (10a) formed in the upper wall surface (10A) of the step sheet (10). As the upper wall The fastening fixture (12) is connected to the joint between the convex surface (10b) of 10A) and the mounting recess (10c) that projects upward from the bottom wall surface (10B) and is joined to the back side of the upper wall surface (10A). ), And the brake shaft (16) in the left-right direction, which is the rotational axis of the brake pedal (15), is below the step seat (10) and lower than the lower end of the step seat (10). The operation rod (19) is arranged via the swing link (18) by the depression operation of the brake pedal (15), and the brake arms (20a, 20b, 20c) are rotated by the depression of the brake pedal (15). By pulling (21) and the brake rod (22), the gear provided on the transmission input shaft and the gear provided on the lower transmission side of this gear are disengaged and the clutch is disengaged. Both are configured such that the parking brake is operated, and the lock arm (25) that holds the brake arm (20a, 20b, 20c) in a state where the parking brake is operated is disposed on the front side of the brake arm (20a, 20b, 20c). The clutch wire (21), the brake rod (22), and the actuating rod (19) are arranged in a posture intersecting in a side view .

  When the driver's seat (5) is raised to a high position in order to improve the visibility according to the cutting work situation, the driver drives with a comfortable posture with his feet on the footrest (11). Can be operated. Further, since the parking brake pedal (15) is arranged in the vicinity of the right side of the footrest (11), even if the driver's seat is raised to a high position, the brake pedal (15) can be depressed easily and accurately. Can be applied.

  Further, since the brake pedal (15) is located immediately above the footrest (11), the brake can be easily operated with a short foot movement distance. In addition, when the brake pedal (15) is depressed and locked, the operation surface of the brake pedal (15) is lower than the upper surface of the footrest (11), so there is no danger of getting caught when getting on and off. It is.

In addition, the footrest (11) can be attached and detached integrally with the step seat (10), and maintenance of the equipment and the like installed below can be easily performed.
In addition, since the footrest (11) also serves as a tool box, it is not necessary to install a separate toolbox, and the tools can be easily provided by simply opening and closing the upper surface of the footrest (11). It can be stored and can be implemented at low cost.

The invention according to claim 2 is configured to transmit the output of the engine to the working unit via the continuously variable transmission, and based on the engine speed and the fuel injection amount in a state where the threshing unit (3) is driven. When the engine load is determined to be high, the engine speed is increased and the continuously variable transmission is shifted to the deceleration side to control the output rotational speed of the continuously variable transmission to a constant rotational speed. It was combined according to claim 1, wherein the said.

  According to the first aspect of the present invention, the driver puts his / her feet on the footrest (11) even when the driver's seat is raised to a high position in order to improve visibility in the cutting work situation or the like. It is possible to operate with a comfortable posture at all times, and to work efficiently. In addition, since the brake pedal (15) for operating the parking brake is disposed near the right side of the footrest (11), the brake pedal (15) can be easily depressed even when the driver's seat is at a high position. It can be done and the parking brake can be applied accurately.

  In addition, since the brake pedal (15) is located immediately above the footrest (11), the movement distance of the foot is small, and a quick brake operation can be easily performed. Further, when the brake pedal (15) is depressed and locked, the operation surface of the brake pedal (15) is lower than the upper surface of the footrest (11), so there is no fear of getting caught when getting on and off. It is safe.

Moreover, since the footrest (11) can be attached and detached integrally with the step seat (10), it is possible to easily perform maintenance of the equipment mounted below the step portion.
Moreover, since the footrest (11) also serves as a tool box, it is not necessary to prepare another tool box and can be implemented at low cost.
According to the invention described in claim 2, in addition to the effect of the invention described in claim 1 , in the state where the threshing portion (3) is driven, the load of the engine is determined based on the engine speed and the fuel injection amount. Is determined to be high, the engine speed is increased and the continuously variable transmission is shifted to the deceleration side to control the output rotational speed of the continuously variable transmission to a constant rotational speed. Since the operation can be performed at the optimum engine speed with respect to the load, it is possible to supply the output corresponding to the load generated in each working unit while suppressing fuel consumption.

Combine side view Top view of the main part of the combine Side view showing relationship between step part, footrest and brake pedal part Same as above Side view of step part and footrest part Top view of the main part Side view of brake pedal, brake lock mechanism, unlock mechanism Side view of the main part Top view of the main part Side view of step part, footrest part and brake pedal part Same as above Same as above Plan view of step sheet Side view showing driving operation unit and step unit Power steering circuit diagram The perspective view which shows the switch mechanism part of a power steering lever Plan view of display panel

An embodiment of the present invention will be described with reference to the drawings.
The traveling vehicle body 1 of the combine is provided with a pair of left and right traveling crawlers 2 and 2, and a cutting portion 4 is installed in front of a threshing portion (threshing device) 3 mounted on the rear portion. A driving operation unit including a driver's seat 5 and an operation box 6 is provided, and a Glen tank G for temporarily storing threshing grains is provided behind the driving operation unit.

  The driver's seat 5 is configured to be vertically adjustable. The operation box 6 includes a front operation box 6F positioned on the front side of the driver's seat 5 and a side operation box 6S disposed on the left side of the driver's seat 5. The side operation box 6S is provided with a cutting / removal clutch lever, a shift lever (HST lever) 7, etc., and the front operation box 6F controls the advancing direction of the aircraft to the left and right by the left and right operation, and the front and rear operation. The power steering lever 8 and the like for controlling the raising and lowering of the cutting unit 4 are provided.

  A step seat 10 made of a rubber material or a resin material is laid on the step frame 9 between the driver's seat 5 and the front operation box 6F. The step sheet 10 shown in FIG. 3 is blow-molded with a resin material, and has an upper wall surface 10A formed with uneven surfaces 10a and 10b on the upper surface, and protrudes upward on the bottom surface on the back side of the upper wall surface 10A. A bottom wall surface 10B having a mounting recess 10c to be joined is used.

  On the step seat 10 between the front side of the driver's seat 5 and the front operation box 6F, a footrest 11 on which the left and right feet of the driver are placed is disposed higher than the upper surface of the step.

  The footrest 11 is configured in a box shape so that tools can be accommodated, and the upper wall surface (footrest surface) 11a is inclined after lowering the rear end side from the front end, and this is an open / close lid. In this way, it can be opened and closed (see FIGS. 5 and 6) via the hinge 11b. Further, the footrest 11 is fastened and fixed to a joint portion between the convex surface 10b of the upper wall surface 10A of the step sheet 10 and the mounting recessed portion 10c of the bottom wall surface 10B via a fastening fixture 12 such as a bolt. The frame 9 can be attached and detached together with the step sheet 10. In addition, in the said Example (FIG. 3), when attaching a footrest, it is set as the structure which attaches the footrest 11 using the concave groove 10a of the step sheet | seat 10 as a guide.

  As shown in FIGS. 13 and 14, when attaching the step sheet to the step support frame, the projections 13 and 13 projecting from the lower surface of the step sheet 10 sandwich the step support frame 9 in the lateral direction from the front and rear. By being configured to be fitted and set in a state, it can be easily attached and detached, and can be easily attached and detached with one touch.

Near the right side of the footrest 11 is disposed a brake pedal 15 that activates a parking brake by a stepping operation.
The brake pedal 15 is configured to rotate integrally with the brake shaft 16 as a pivot axis, and the pedal surface is configured to be stepped on from a high position above the footrest 11 to a low position below. Yes. Reference numeral 17 denotes a manual handle which can be operated manually from outside the machine.

  When braking the parking brake device in the transmission case, if the brake pedal 15 is depressed, the actuating rod 19 is pulled through the brake shaft 16 and the swing link 18, and the brake arms 20a, 20b, 20c are counterclockwise. And the clutch wire 21 and the brake rod 22 are pulled. Then, the shift arm 23 is rotated by the pulling operation of the clutch wire 21, the gear provided on the mission input shaft is slid, the meshing with the lower gear is released, and the clutch is disengaged. At the same time, the brake actuating arm 24 is rotated by the pulling operation of the brake rod 22, and the parking brake is actuated to apply a braking force. Then, the brake arm 20a is engaged and held by the lock arm 25 in a state where the brake is applied, and the brake is locked.

  To unlock the parking brake, when the shift lever 7 is operated to the neutral position and tilted to the left or right, the lock release wire 26 is pulled, and the lock arm 25 rotates counterclockwise to engage with the brake arm 20a. Comes off. As a result, the brake arms 20a, 20b, and 20c rotate and return in the clockwise direction, and wait until the next depression operation of the brake pedal is performed.

  The parking brake can be locked and unlocked by the above-described configuration and operation. In particular, the unlocking can be performed by operating the shift lever to the neutral position. Can be safe.

  In the embodiment shown in FIGS. 10 to 12, the step seat 10 and the footrest 11 are integrally formed of resin or the like, and appropriate inclination angles are provided on the side surfaces of the footrest 11 on the brake pedal 15 side and the driver's seat 5 side. The inclined surfaces 11c and 11d are provided. According to this, when the brake pedal is depressed, it is not caught by the footrest and the pedal cannot be depressed.

  When the brake is released (when the pedal is not depressed), the pedal 15 is positioned behind the footrest 11 in the side view (driver's seat side) so that the brake pedal is easy to step on, and is natural when the foot is raised from the footrest. Therefore, a more natural pedaling operation can be achieved. In addition, when the brake is locked (depressed), the pedal position is positioned in front of the footrest when viewed from the side, so that the pedal wraps with the footrest when viewed from the side, and does not interfere with getting on and off. .

  In the crawler removal operation, conventionally, the left or right side of the machine is lifted up to loosen the crawler tension. After starting the engine, only the crawler on one side is rotated, and one person operates the power steering lever to lock the crawler on the other side and advance at a low speed. And another person is trying to remove the crawler.

  In this example, as shown in FIG. 15 (circuit diagram) and FIG. 16, the power steering limit switch connector 30 of the power steering lever 8 is removed from the main harness, and the bypass switch connector 31 is inserted into the main harness and directly output to the solenoid. To do. Then, the crawler is locked by operating the switch. In this way, the crawler removal operation can be performed safely and easily by one person compared to the conventional two-person operation.

  In a configuration where the output is transmitted from the engine output shaft to each combine unit through a continuously variable transmission (HST, Belcon, etc.), the engine output rotation transmission and electronically controlled throttle are combined, and the engine rotates in accordance with the load increase / decrease. The transmission is automatically controlled so as to change the number and make the output rotation speed taken out by the continuously variable transmission constant. The above control is performed when the threshing machine is “ON”, and the throttle is also automatically controlled so that when the load increases and the engine rotation is going to decrease, the engine rotation is increased and the output rotation speed change is decelerated. . When it is determined that the load is light based on the engine speed and the fuel injection amount, the engine speed is controlled to be lowered and the output speed is increased. According to this control, it is possible to perform the operation at the optimum engine speed with respect to the load that changes depending on the field conditions, and thus it is possible to suppress fuel consumption. By judging the load based on the engine rotation and the fuel injection amount, it is possible to deal with all the steering, cutting and threshing loads.

  In such engine rotation control, the shift position of the engine output rotation transmission device is displayed on the eco monitor of the display panel 32 (see FIG. 17). When the speed is on the acceleration side, the “eco” state is displayed. Displaying that the state is “high load” makes it easier for the operator to grasp the work state, and thus makes it easier to perform eco-driving. In addition, since the eco-driving is in a state where the load applied to the combine is small, durability of each part can be improved. In FIG. 17, N1 indicates a zone that outputs a rated rotation by the engine output rotary transmission, N2 indicates a zone that drops from the rated rotation, and 33 indicates a tachometer.

  Further, when the engine output rotation transmission device is on the deceleration side, the state in which the engine rotation is increased is rated, and the operator may not notice even if dropping from there. The state must be read from two meters where the eco-monitor is “high load” and the engine rotation is from which position. Therefore, when the engine output rotational transmission device is on the deceleration side and the engine speed further decreases, the above-mentioned eco monitor is displayed. According to this, the work state can be grasped by one monitor, and when the vehicle is further lowered from a high load, it is possible to promptly take measures such as immediately reducing the vehicle speed.

3 Threshing section 5 Driver's seat 9 Step support frame 10 Step seat
10A Upper wall surface
10a Groove
10B Bottom wall
10b Convex surface
10c Mounting recess 11 Foot rest
12 Tightening fixture 15 Brake pedal
16 Brake shaft
18 Swing link
19 Actuating rod
20a Brake arm
20b Brake arm
20c Brake arm
21 Clutch wire
22 Brake rod
25 Lock arm

Claims (2)

A footrest (11) on which the driver's feet are placed is attached to the upper side of the step seat (10) provided in front of the driver's seat (5), and parking is carried out near the right side of the footrest (11) by depressing operation. A brake pedal (15) for operating the brake is disposed, and the brake pedal (15) has a stepping operation surface lower than the upper surface of the footrest (11) from a position higher than the upper surface of the footrest (11). It is configured so that it can be stepped on to a position, and the footrest (11) can be attached to and detached from the step support frame (9) integrally with the step seat (10) ,
The footrest (11) includes a tool storage portion that can store tools,
The footrest (11) has a concave surface (10a) formed on the upper wall surface (10A) of the step sheet (10) as a guide, and a convex surface (10b) of the upper wall surface (10A) and a bottom wall surface (10B). Fastened by a fastening fixture (12) to the joint with the mounting recess (10c) that projects upward from and is joined to the back side of the upper wall surface (10A),
The left and right brake shaft (16), which is the rotational axis of the brake pedal (15), is disposed below the step seat (10) and above the lower end of the step seat (10). Then, by depressing the brake pedal (15), the operating rod (19) is pulled via the swing link (18) to rotate the brake arms (20a, 20b, 20c), and the clutch wire (21) and brake By pulling the rod (22), the gear provided on the transmission input shaft and the gear provided on the lower transmission side of this gear are disengaged to disengage the clutch, and the parking brake is activated. ,
A lock arm (25) for holding the brake arm (20a, 20b, 20c) in a state where the parking brake is operated is disposed on the front side of the brake arm (20a, 20b, 20c),
The combine characterized by arrange | positioning the said clutch wire (21), the brake rod (22), and the said operating rod (19) in the attitude | position which cross | intersects by side view . The engine output is configured to be transmitted to the working unit via the continuously variable transmission, and the engine load is high based on the engine speed and the fuel injection amount when the threshing unit (3) is driven. 2. The combine according to claim 1, wherein when the engine speed is determined, the engine speed is increased and the continuously variable transmission is shifted to the deceleration side to control the output speed of the continuously variable transmission to a constant speed. .

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