JP2012090556A - Combined harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a constitution allowing a grain tank to turn and an unloader to swing, and to separate the discharge position of grains from a self-traveling machine body without elongating the unloader.SOLUTION: A combined harvester turnably supports the grain tank E around a vertical axis Y at the rear part and includes: a bottom screw 21 of the grain tank E deflected outward in a width direction of the machine; the unloader F to which the grains are sent from the bottom screw 21 on a rear surface of the grain tank E. The unloader F is swingably supported around the axis of the bottom screw 21 and a swing axis X of the axis.

Description

  According to the present invention, a self-propelled aircraft body is provided with a Glen tank, an unloader for discharging the grains of the Glen tank by a discharge screw is provided on the rear side of the Glen tank, and the Glen tank is stored in the self-propelled aircraft body. The unloader is supported in a swingable manner around the longitudinal axis of the vertical posture on the rear side of the grain tank so that it can be switched between a working posture and an inspection posture projecting laterally from the self-propelled aircraft. It is provided so as to be swingable around a swinging shaft center in a front-rear posture so as to be switchable between a storage posture in which the side end portion is directed upward and a discharge posture in which the discharge side end portion is directed outward. About combine.

  As a combine configured as described above, in Patent Document 1, a Glen tank is supported by an upper mounting shaft so as to be rotatable with respect to the body frame, and an unloader (in the literature, a vertical auger for discharge) is mounted on the rear surface of the Glen tank. ) Are shown. In this patent document 1, it has the tank side metal part connected to the rear surface side of a Glen tank, an intermediate | middle metal part, and an auger side metal part, and has connected the unloader with respect to the auger side metal part. . In Patent Document 1, the unloader is configured to be extendable.

  In the combine of Patent Document 1, the intermediate metal portion is connected and fixed to the body frame, and the unloader (discharge auger) is swingable by connecting the auger side metal portion to the intermediate metal portion so as to be rotatable in the horizontal axis. It is connected to.

  In addition, the tank side metal part and the intermediate metal part are pivotally attached by the lower vertical mounting shaft, and the lower vertical mounting shaft and the upper mounting shaft are arranged coaxially so that the middle of the Glen tank can be turned The tank side metal part is separated from the metal. In Patent Document 1, the conduction system that transmits the driving force of the discharge spiral provided at the bottom of the Glen tank to the auger spiral of the unloader is configured to be separated between the intermediate metal part and the tank side metal part. ing.

JP 2010-98966 A

  As described in Patent Document 1, in the configuration in which the turning of the Glen tank is allowed by separating the path for conveying the grain from the Glen tank to the unloader, not only the structure is complicated, but also the number of parts There is room for improvement in terms of incurring an increase.

  Further, the length of the unloader is regulated so that the end on the discharge side does not protrude greatly from the Glen tank in the state of being set in the retracted posture (vertical posture). For this reason, the grain discharge position is also determined when the unloader is swung to turn the end of the discharge side in the horizontal direction in order to discharge the grain of the grain tank in the horizontal direction. There is also a desire to keep the discharge position as far as possible from the self-propelled aircraft. In order to meet such a demand, it is conceivable that the unloader is configured to be extendable and retractable as disclosed in Patent Document 1, but this configuration leads to a complicated structure and an increase in the number of parts. There is.

  An object of the present invention is to simplify the configuration that enables the turning of the Glen tank and the swinging of the unloader, and to set the grain discharge position from the unloader without increasing the size of the unloader. The reason is that the combine that can be separated is rationally configured.

A feature of the present invention is that a self-propelled aircraft body is provided with a glen tank, an unloader that discharges grains of the glen tank by a discharge screw is provided on the rear side of the glen tank, and the glen tank is stored in the self-propelled aircraft body. The unloader is supported so as to be pivotable around a longitudinal axis in a vertical orientation on the rear side of the grain tank so as to be switchable between a working posture and an inspection posture projecting laterally from the self-propelled aircraft. , Swingable around the swing axis of the front-rear posture so as to be switchable between a retracted posture in which the discharge side end portion is directed upward and a discharge posture in which the discharge side end portion is directed outward. A combine that
The unloader is connected to and supported by the rear surface of the Glen tank via a joint mechanism that supports the unloader so as to be swingable around the swing axis, and the position of the swing axis is the position of the vertical axis. It exists in the point arrange | positioned outside in the width direction of a self-propelled body from a position.

According to this configuration, when the Glen tank is turned around the longitudinal axis, the auger is turned integrally with the Glen tank. That is, as described in Patent Document 1, it is not necessary to provide a structure for realizing separation in order to allow the turning of the Glen tank at the base end portion of the auger. Also, since the swing axis is arranged outside the vertical axis position in the width direction of the self-propelled machine body, the swing axis is arranged on the outer side of the Glen tank without being obstructed by the vertical axis. When the discharge-side end of the auger is turned sideways by swinging, the discharge-side end is separated from the self-propelled aircraft as compared to the center of the swinging shaft on the center of the self-propelled aircraft. It is also possible to greatly separate.
Therefore, there is provided a combine that can simplify the configuration that enables turning of the Glen tank and swinging of the unloader, and can separate the grain discharge position from the unloader from the self-propelled machine body without increasing the size of the unloader. Configured.

  The present invention includes a bottom screw that conveys the grain at the bottom of the Glen tank to the rear side, an elbow unit that sends the grain from the bottom screw to the discharge screw, and a base end side of the elbow unit. While the joint mechanism is formed, a bevel gear mechanism for transmitting the rotational force of the bottom screw to the discharge screw may be provided inside the elbow unit.

  According to this, the grain discharge | emission is implement | achieved by sending the grain stored in the Glen tank to an elbow unit from a bottom screw, and sending to the discharge screw of an auger from this elbow unit. Further, since the bevel gear mechanism is provided inside the elbow unit, the transmission structure is simplified.

  In the present invention, the longitudinal axis may be arranged in front of the rotational axis of the discharge screw of the unloader.

  According to this, since the vertical axis core can be disposed at a position close to the Glen tank, it is possible to suppress an increase in the size of the arms that rotatably support the Glen tank. In addition, since the rotary shaft core of the discharge screw is arranged on the rear side of the vertical axis, for example, a member (a member that supports the glen tank so as to be rotatable) is arranged on the vertical axis and the coaxial core. However, it is possible to avoid interference between this member and the unloader.

  In the present invention, a columnar member disposed on the same axis as the longitudinal axis is connected to the Glen tank, and the columnar member is supported by the self-propelled machine body so as to be rotatable around the vertical axis. In addition, in the state where the Glen tank is in the working posture, the support member and the unloader in the retracted posture may be arranged at a position where a part thereof overlaps in rear view.

  According to this, it becomes easy to lengthen the vertical dimension of the columnar member, and the Glen tank can be stably supported by the columnar member so as to be rotatable. Moreover, since this support | pillar member and unloader are made to adjoin in the width direction of a self-propelled machine body, it also becomes possible to arrange | position in a small space.

  In the present invention, a posture maintaining mechanism for maintaining the swinging posture of the unloader includes a support provided on the columnar member, and a plurality of engaging portions provided on an outer wall surface of the unloader along a longitudinal direction of the unloader. And an engagement plate having one end supported by the support and the other end selectively engageable with any one of the plurality of engagement portions of the engagement plate. .

  According to this, since the strut-shaped member rotates integrally with the Glen tank around the vertical axis when the Glen tank turns, the support provided to the strut-shaped member, the engagement plate of the unloader, The connecting rod rotates integrally with each other, and the relative positional relationship between them does not change. From such a configuration, for example, when one end of the connecting rod is supported by the fixed system, one end of the connecting rod is rotatably supported by the fixed system in order to allow the Glen tank to turn. The configuration is not necessary, and the configuration of the posture maintaining mechanism is simplified. Further, the unloading posture of the unloader can be maintained without difficulty by engaging the other end of the connecting rod whose one end is supported by the support body with any of the plurality of engaging portions of the engaging plate provided on the outer wall surface of the unloader. .

It is a right view of the whole ordinary combine. It is a top view of the whole ordinary combine. It is a side view which shows a Glen tank rear part and an unloader. It is a rear view which shows an unloader and a columnar member. It is a vertical side view of an elbow unit part. It is a cross-sectional plan view of an unloader and a columnar member. It is a rear view which shows the base end part of an unloader and a columnar member. It is a conceptual diagram of a discharge clutch. It is a rear view which shows the unloader in a rocking state.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
〔overall structure〕
FIG. 1 and FIG. 2 show a normal combine as an example of a combine.
This ordinary combine is provided with a driving unit B and a pre-cutting processing unit C at the front position of the self-propelled machine A that travels with the pair of left and right crawler travel devices 1, and the cereals from the pre-cutting processing unit C The self-propelled machine body A includes a threshing processing unit D into which the threshing is introduced and a Glen tank E that stores the grains from the threshing processing unit D.

  Glen tank E has a working posture (posture indicated by a solid line in FIG. 2) stored in self-propelled aircraft A by turning around vertical axis Y of the vertical orientation of the rear position of self-propelled aircraft A, and the self-propelled aircraft. It is supported so as to be able to switch to an inspection posture projecting laterally from A (posture indicated by a virtual line in FIG. 2), and an unloader F is provided on the rear surface of the Glen tank E. As shown in FIG. 9, the unloader F swings back and forth so that it can be switched between a retracted posture in which the discharge side end portion is directed upward and a discharge posture in which the discharge side end portion is directed outward. It is provided so as to be swingable around the dynamic axis X. Further, a fuel tank 4 is provided at the rear end of the self-propelled aircraft A at the rear position of the Glen tank E.

  An engine 3 is disposed below the driver seat 2 of the driver B, and a transmission case (not shown) transmits driving force from the engine 3 to the left and right crawler travel devices 1 at the center of the front part of the self-propelled aircraft A. )). The transmission case is provided with a continuously variable transmission that continuously changes the driving force from the engine 3 and a steering clutch (not shown) that interrupts the driving force that is transmitted to the left and right crawler travel devices 1. Has been.

  The pre-harvest processing unit C rakes the tip of the planted culm by the rotation of the reel 5, cuts the stock of the culm with the cutter 6, and removes all of the harvested culm (harvested cereal). The pestle is fed in the lateral direction by the lateral feed auger 7, and the whole pestle of the harvested cereal pod is put into the threshing processing unit D by the feeder 8. Further, the pre-cutting processing section C is connected so as to be swingable up and down around a horizontal axis (not shown) at the rear end portion, and is provided with an actuator such as a hydraulic cylinder that swings up and down. The cutting height of the cereal can be adjusted by setting the amount of rocking by the operation of the actuator.

[Boarding Driving Department]
The driver B includes a box-shaped engine cover 11 that covers the upper side of the engine 3, and a driver seat 2 that allows a driver to sit on the upper surface of the engine cover 11. An intake case 11A is formed on the outer side of the engine cover 11, and an intake portion 11B is formed on the outer surface side of the intake case 11A. A steering lever 12 for controlling the steering control of the self-propelled aircraft A and the lifting and lowering of the pre-cutting processing unit C is provided on the front side of the driver seat 2, and the traveling speed of the self-propelled aircraft A is provided on the left side of the driver seat 2. A shift lever 13 to be controlled, and a working lever 14 that reveals a state of driving and stopping the pre-cutting processing unit C and the threshing processing unit D are provided. A discharge clutch lever 15 is provided on the front side of the upper portion of the intake case 11A.

  The steering lever 12 is maintained in a neutral position in a non-operating state, and controls the steering clutch built in the mission case by swinging in the left-right direction with reference to this neutral position. The self-propelled aircraft A is steered (turned). Further, by operating the steering lever 12 in the front-rear direction, the actuator described above is controlled to realize the lifting and lowering of the pre-cutting processing unit C. Further, the shift lever 13 shifts the continuously variable transmission by operating in the front-rear direction to change the traveling speed. The work lever 14 performs on / off of the clutch for performing power on / off for the threshing processing unit D by operation in the front / rear direction, and performs on / off for the clutch for performing power on / off for the pre-cutting processing unit C.

  As shown in FIG. 8, a discharge clutch G for transmitting the driving force from the engine 3 to the discharge system of the Glen tank E is provided, and the above-described discharge clutch lever 15 is linked so as to operate the discharge clutch G. With such a configuration, by operating the discharge clutch lever 15 to the engaged position, the discharge clutch G is engaged and operated, and the driving force from the engine 3 is transmitted to the bottom screw 21 of the glen tank E, and further the unloader F is driven. The grain is discharged from the Glen tank E.

[Threshing Department]
The threshing processing unit D is an axial flow type cylinder (not shown) that is driven and rotated around an axial center in a posture along the front-rear direction of the self-propelled machine body A so as to perform a handling process of the harvested cereal grains supplied to the handling room. And a sorting device (not shown) for sorting the grains from the processed product obtained by the handling process of the barrel. The grain selected in this sorting processing apparatus is supplied to the grain tank E by the cerealing device 9, and swarf other than the grains are dropped and released from the sorting processing apparatus to the rear of the self-propelled machine A. .

[Glen tank and unloader]
As shown in FIGS. 3 to 9, the Glen tank E is provided with a bottom screw 21 that feeds grains stored in the tank body 20 backward, at the bottom of the tank body 20. The bottom wall 20B of the tank body 20 is formed on an inclined surface so that the stored grain flows down to the outside of the self-propelled aircraft A. Since this structure is used, the bottom screw 21 is located outside the self-propelled aircraft A. It is arrange | positioned in the position deviated to. As shown in FIG. 8, a front end of the screw shaft 21 </ b> A of the bottom screw 21 protrudes forward from the front wall 20 f of the tank body 20, and a laterally oriented intermediate shaft 23 connected to the protruding portion via a bevel gear 22 is provided. The tank body 20 is provided at the lower part of the front wall 20f.

  The above-described discharge clutch G is configured as a belt tension type that transmits the driving force from the engine 3 to the intermediate shaft 23, and the discharge clutch lever 15 adjusts the belt tension of this clutch mechanism, thereby interrupting power. Is configured to do.

  An elbow unit 30 that sends the grain sent from the bottom screw 21 to the unloader F is provided on the rear wall 20r of the tank body 20 so that the axis of the screw shaft 21A of the bottom screw 21 coincides with the swing axis X. It has been. As shown in FIGS. 3 and 5, the elbow unit 30 includes a cylindrical base end portion 31 in a lateral orientation and a cylindrical extension portion 32 that continues in a posture orthogonal to the base end portion 31. A fixed cylinder 31A having an end 31 connected to the Glen tank, a rotating cylinder 31B disposed on the same axis as the swing axis X with respect to the fixed cylinder 31A, and the fixed cylinder 31A and the rotating cylinder 31B. A joint mechanism 31C is rotatably connected to each other.

  The joint mechanism 31C has a structure in which the fixed cylinder 31A and the rotary cylinder 31B are pivotably connected about the pivot axis X, and a plurality of holding bodies 33 that hold the rotary cylinder 31B in a retaining state. And a bush, a collar, and the like for allowing relative rotation between the holding body 33 and the rotating cylinder 31B. The holding body 33 is supported by a support plate 62 that rotates integrally with the Glen tank E. Although not shown in the drawings, an opening for discharging the internal dust is formed in the base end portion 31, and a lid for closing the opening is detachably provided. The opening is opened to discharge the internal dust. The internal inspection can be performed.

  The unloader F includes a discharge cylinder 41 and a discharge screw 42 disposed inside the discharge cylinder 41, and discharges the grain to guide the grain in a direction perpendicular to the longitudinal direction of the discharge cylinder 41 at the discharge side end. A guide 43 is provided. The base end side of the discharge screw 42 is configured as a double screw in which two screws are formed with respect to the screw shaft 42A, and the base end side can reliably convey the grain. The screw shaft 42A is rotatably supported around the rotation axis Z, and a light 45 for illuminating the grain discharge direction is provided at the upper end of the discharge tube 41.

  A part of the screw shaft 21 </ b> A of the bottom screw 21 is inserted into the base end part 31 of the elbow unit 30, and a part of the discharge screw 42 is inserted into the extension part 32 of the elbow unit 30. . The screw shaft 21A at the conveyance end position of the bottom screw 21 is provided with a rotating plate 21B that scoops up the grains. Around the shaft cores orthogonal to each other so as to transmit the driving force of the screw shaft 21A to the screw shaft 42A of the discharge screw 42. A bevel gear mechanism 44 having a pair of bevel gears 44 </ b> G that rotate at the inside is provided inside the elbow unit 30.

  From such a transmission structure, it becomes possible to transmit the driving force of the bottom screw 21 to the discharge screw 42 via the bevel gear mechanism 44 of the elbow unit 30, and the grain of the Glen tank E is conveyed from the bottom screw 21 to the discharge screw 42. The unloader F can be discharged from the carry-out end.

  In the unloader F, the rotation direction of the bottom screw 21 is set to be counterclockwise (counterclockwise) when the Glen tank E is viewed from the rear, and when unloading the grain from the unloader F, the discharge cylinder 41 of the unloader F is used. On the other hand, a torque that makes the unloader F face the retracted posture acts (see FIG. 9). Thereby, when discharging the grain, force always acts in the direction of lifting the discharge side end of the unloader F. In addition, it is also possible to set the rotation direction in the reverse direction by changing the shape of the bottom screw 21. When the rotation direction is set in this way, the discharge-side end portion of the unloader F is set when the grain is carried out. A force acts in the direction of lowering.

  A columnar member 25 whose longitudinal axis Y is coaxial is connected and fixed to the rear wall 20r of the tank body 20 of the Glen tank E by a bracket 26. This columnar member 25 is formed in a cylindrical shape, and an intermediate body 60 is connected to the lower end portion thereof. A support member 61 is connected to the lower surface of the intermediate body 60 in a cylindrical shape having a diameter smaller than that of the columnar member 25 and on the same axis as the longitudinal axis Y, and the lower end of the support member 61 is provided in a bracket 50A connected to the body frame 50. The bearing body 51 is rotatably supported.

  A pair of support plates 62 connected to the support member 61, the intermediate body 60, and the base end portion 31 of the elbow unit 30 in a state in which the support member 61 is sandwiched from the front and rear positions are provided. The holding body 33 described above is provided. As a result, the Glen tank E is supported so as to be pivotable about the longitudinal axis Y, and during this turning, the Glen tank E, the unloader F, the elbow unit 30, the columnar member 25, and the intermediate body. 60, the support member 61, and the support plate 62 rotate integrally.

  The machine body frame 50 is provided with a vertical frame 52 in a vertical posture parallel to the vertical axis Y at a position adjacent to the columnar member 25, and the vertical support 52 is provided on the vertical frame 52. The rotation support 53 is formed in an annular shape and embraces the outer peripheral surface of the columnar member 25 in a rotatable manner. In addition, since the support member 61 has a smaller diameter than the columnar member 25, the columnar member 25 and the base end portion 31 are arranged in a plan view by arranging the proximal end portion 31 of the elbow unit 30 close to the support member 61. The close-up arrangement of the columnar member 25 and the elbow unit 30 is realized with the overlapping positional relationship (see FIG. 6).

  As shown in FIG. 6, the columnar member 25 is provided with a holding plate 27 that protrudes rearward in a horizontal posture in a connected and fixed state. The holding plate 27 has a semicircular shape into which the discharge cylinder 41 of the unloader F is fitted. A recess 27A is formed. An arcuate fixing plate 28 that embraces the outer surface of the discharge cylinder 41 is provided on the upper surface of the holding plate 27, and concave engaging portions 28 </ b> A are formed at both ends of the fixing plate 28 by bending. Further, a posture maintaining mechanism H that maintains the swinging posture of the unloader F is provided between the holding plate 27 and the discharge cylinder 41 of the unloader F.

  In this combine, the vertical axis Y is disposed at a position close to the rear wall 20r of the Glen tank E, and the swing axis X is disposed outside the self-propelled machine body A in the lateral width direction with reference to the vertical axis Y. The rotational axis Z of the unloader F is set behind the vertical axis Y.

  Thus, since the swing axis X is arranged outside the self-propelled machine body A from the vertical axis Y, and the bottom screw 21 is arranged so as to be deviated outside the self-propelled machine A, the unloader F is entirely Therefore, when the discharge-side end of the unloader F is swung outward, the distance between the discharge position and the machine body is increased.

  Further, as shown in FIG. 4, in a state where the Glen tank E is in the working posture and the unloader F is in the retracted posture, the columnar member 25 and the discharge cylinder 41 of the unloader F partially overlap in the rear view. Is arranged. Thereby, the columnar member 25 and the unloader F are brought close to each other in the lateral width direction of the self-propelled machine body A, so that they can be arranged in a small space.

  As shown in FIGS. 4, 6, and 9, the posture maintaining mechanism H is arranged along the longitudinal direction of the unloader F provided on the outer wall surface of the support body 55 provided on the upper surface of the holding plate 27 and the discharge cylinder 41. An engagement plate 56 having a plurality of engagement portions 56 </ b> A, and a connecting rod 57 that is supported at one end by the support body 55 and can be selectively engaged with any of the plurality of engagement portions 56 </ b> A of the engagement plate 56. It consists of and. In this posture maintaining mechanism H, since the holding plate 27 is connected to the columnar member 25, the support body 55, the engagement plate 56, and the connecting rod even if the Glen tank E turns around the longitudinal axis Y. The relative positional relationship with 57 is maintained, and the posture of the unloader F can be stably maintained.

  Of the plurality of engaging portions 56A, the one close to the discharge side end is formed as a simple through hole, and the plurality close to the swing axis X has a posture along the longitudinal direction of the discharge tube 41. The slits 56B are formed in a continuous state. The connecting rod 57 has a shape in which the proximal end shaft portion 57A and the distal end shaft portion 57B are bent in a posture orthogonal to the longitudinal direction, and the proximal end shaft portion 57A is inserted into the through hole of the support body 55 to prevent the connection rod 57 from coming off. The tip shaft portion 57B is provided with a washer and a pin so as to be detachable.

  The swinging posture of the unloader F around the swinging shaft core X is set by human operation. When the unloader F is maintained in the retracted posture, the distal end shaft portion 57B of the connecting rod 57 is connected to the discharge side end. The unloader F can be maintained in the retracted posture by being inserted into (engaged with) the engaging portion 56A at a position close to the portion and preventing it from coming off with a washer, a pin or the like. In particular, in this retracted position, both ends of a rubber holding belt 58 (see FIG. 6) are latched and connected to the latching portions 28A at both ends of the fixed plate 28, thereby discharging the tension of the holding belt 58. It is made to act on the cylinder 41 so that it can be stably maintained in the retracted posture.

  In addition, in a state where the swinging posture of the unloader F is set by human operation, the tip shaft portion 57B of the connecting rod 57 is selected and latched by selecting one of the plurality of engaging portions 56A of the engaging plate 56, and a washer or By performing the retaining with a pin or the like, the swinging posture can be maintained. In particular, when maintaining this swinging posture, since the plurality of engaging portions 56A are connected by the slit 56B, it is not necessary to remove the stopper with a washer, a pin or the like even when switching the posture of the unloader F. It makes it easy to hang.

  The posture maintaining mechanism H is not limited to the one using a rod. For example, a configuration in which a wire is provided between the support 55 and the engagement plate 56 and the connection position of the wire with respect to the engagement plate 56 can be changed is adopted. It is also possible. In the case of using a wire as described above, since the wire is linear and has a property of being deformed flexibly, the degree of freedom of arrangement of the posture maintaining mechanism H is increased, and the arrangement space can be reduced.

  Further, as the posture maintaining mechanism H, for example, a pair of link plates that are foldably connected by a shaft body or a hinge is used, one of the link plates is swingably connected to the support body 55, and the other of the link plates is discharged. A configuration in which the cylinder 41 is swingably connected may be used. In this configuration, the unloader F is in the retracted posture with the pair of link plates bent, and the unloader F is in the discharge posture with the pair of link plates in the extended posture, which can be set only in these two postures. In the discharging posture, the posture of the unloader F is stably maintained.

  Furthermore, an electric motor or a hydraulic cylinder for determining the swinging posture of the unloader F may be provided. With this configuration, it is not necessary for the operator to determine the posture of the unloader F by human power, and the posture maintaining mechanism H can be omitted.

[Operation / Effect of Embodiment]
As described above, in the combine according to the present invention, when the grain of the Glen tank E is discharged by the unloader F, the bottom screw 21 is driven by operating the discharge clutch lever 15 on the side of the driver seat 2, thereby The screw 21 can send the grain of the grain tank E from the elbow unit 30 to the discharge cylinder 41 and can discharge the grain from the discharge cylinder 41 to the outside.

  The length of the unloader F is regulated so as not to protrude greatly from the upper surface of the Glen tank E in the retracted posture. However, since the unloader F is swingably supported around the swing axis X that is displaced outward in the width direction of the self-propelled machine A, the unloader F has a discharge side when set to the discharge posture. The end portion can be greatly separated from the self-propelled machine body A. Further, the discharge direction can be arbitrarily set by setting the swinging posture of the discharge cylinder 41, and since this swinging posture can be maintained by the posture maintaining mechanism H, the discharge direction can be stabilized.

  In particular, a posture maintaining mechanism H that maintains the swinging posture of the unloader F is provided, and the posture maintaining mechanism H is connected to a support member 55 that is connected to the tank body 20 and a discharge cylinder of the unloader F. Since the engaging plate 56 is formed on the outer surface of 41 and the connecting rod 57 provided between them, the posture of the unloader F can be maintained regardless of the turning posture of the Glen tank E.

  The upper part of the columnar member 25 arranged on the same axis as the longitudinal axis Y is connected and fixed to the Glen tank E by the bracket 26, and the intermediate part of the columnar member 25 is turned by the rotation support 53 so as to be freely rotatable. It is supported by the body frame 50 of the traveling body A. Further, a support member 61 is connected to the lower side of the columnar member 25 on the same axis as the longitudinal axis Y, and the lower end portion of the support member 61 is supported by the bracket 50A of the self-propelled aircraft A so that the bearing member 51 can turn freely. Has been. Further, a pair of support plates 62 connected to the support member 61 are connected to the base end portion 31 of the elbow unit 30. Thereby, with respect to the rotation system (the columnar member 25 and the support member 61) that rotates integrally with the Glen tank E, the upper position and the lower position of the Glen tank E are coupled with a long span, Since the middle part and the lower end part of the rotating system (the columnar member 25 and the support member 61) are supported by the self-propelled machine A so as to be pivotable about the longitudinal axis Y, the Glen tank E is stable. Turn is realized.

  Since the vertical axis Y is disposed at a position close to the rear wall 20r of the Glen tank E, it is possible to suppress an increase in the size of the arms that support the Glen tank E, and the discharge screw 42 on the rear side of the vertical axis Y. Since the rotating shaft core Z is disposed, for example, although the columnar member 25 is disposed coaxially with the longitudinal axis Y, the interference between the columnar member 25 and the unloader F can be avoided. In addition, since the columnar member 25 and the unloader F in the retracted posture are arranged in a partially overlapping position in the rear view when the Glen tank E is in the working posture, the columnar member 25 and the unloader F Can be arranged in a small space.

  The present invention can be used not only for ordinary combine harvesters but also for self-removing combine harvesters.

21 Bottom screw 25 Strut-shaped member 30 Elbow unit 31C Joint mechanism 42 Discharge screw 44 Bevel gear mechanism 55 Support body 56 Engagement plate 56A Engagement part 57 Connecting rod A Self-propelled machine E Glen tank F Unloader H Posture maintenance mechanism X Swing axis Y Vertical axis Z Z Rotational axis

Claims (5)

A self-propelled aircraft body is provided with a Glen tank, and an unloader for discharging the grains of the Glen tank with a discharge screw is provided on the rear side of the Glen tank,
Around the vertical axis center of the vertical posture on the rear side of the Glen tank so that the Glen tank can be switched between the working posture stored in the self-propelled aircraft and the inspection posture protruding laterally from the self-propelled aircraft The unloader swings back and forth so that it can be switched between a retracted posture in which the discharge end is directed upward and a discharge posture in which the discharge end is directed outward. A combine provided so as to be swingable around an axis,
The unloader is connected to and supported by the rear surface of the Glen tank via a joint mechanism that supports the unloader so as to be swingable around the swing axis, and the position of the swing axis is the position of the vertical axis. A combine that is placed outside in the width direction of the self-propelled aircraft from the position.   A bottom screw that conveys the grain at the bottom of the Glen tank to the rear side is provided, an elbow unit that sends the grain from the bottom screw to the discharge screw is provided, and the joint mechanism is provided on the base end side of the elbow unit. The combine according to claim 1, further comprising a bevel gear mechanism which is formed and transmits a rotational force of the bottom screw to the discharge screw inside the elbow unit.   The combine of Claim 1 or 2 by which the said vertical axis | shaft core is arrange | positioned ahead of the rotating shaft core of the discharge screw of the said unloader.   A columnar member disposed on the same axis as the vertical axis is connected to the Glen tank, and the columnar member is supported so as to be pivotable around the vertical axis with respect to the self-propelled aircraft body, and The state according to any one of claims 1 to 3, wherein the columnar member and the unloader in the retracted posture are arranged at positions where a part thereof overlaps in a rear view when the Glen tank is in a working posture. Combine.   A posture maintaining mechanism that maintains the swinging posture of the unloader includes a support body provided in the columnar member, and an engagement plate provided on an outer wall surface of the unloader and having a plurality of engaging portions along the longitudinal direction of the unloader. And a connecting rod that has one end supported by the support and the other end selectively engageable with any of the plurality of engaging portions of the engaging plate. Combine.

Images