JP2015029456A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine harvester which is simplified in construction and enabled to swing a grain tank and to fluctuate an unloader thereby to space the discharge position of grains from a self-running machine body without elongating the unloader.SOLUTION: A combine harvester comprises: a rocking drive device to cause an unloader capable of switching a stored position to direct a transportation terminating part upward and a discharge position to direct the transportation terminating part to an outer lateral side, to rock up and down on a horizontal axis; and a discharge clutch for connecting and disconnecting the drive of the unloader to perform the discharge and the discharge stop of grain in a grain tank. A corrugation operation tool 19 for raising up and down the rocking drive unit and a discharge operation tool 18 for switching the discharge clutch are arranged at adjoining positions in the drive part over the self-running machine body.

Description

  The present invention provides a self-propelled combiner in which a grain tank for storing grain and an unloader for discharging grain are provided in the self-propelled machine body. Using a simple type with a straight vertical transport path to the discharge side end, the unloader has a retracted posture with the discharge side end facing upward, and discharge with the discharge side end facing outward The present invention relates to a combine that is configured such that the posture can be switched using a swing drive device.

  As a combine with a structure using a simple unloader as described above, for example, a bucket conveyor is used as an unloader for grain discharge, and this unloader has a storage posture in which the discharge end is directed upward, and a discharge 2. Description of the Related Art As a rocking drive device for swinging up and down to a discharge posture in which a side end portion is directed outward, a structure using a hydraulic cylinder is known (see Patent Document 1).

JP 2001-327216 A (see paragraphs “0020”, “0021”, “0043” and drawings “FIG. 3”, “FIG. 4”, “FIG. 10”)

In the structure shown in Patent Document 1, even if the unloader is increased in size by a combiner equipped with a relatively large-capacity Glen tank by causing the unloader to swing up and down by the hydraulic cylinder, the hydraulic cylinder It is useful in that the posture of the unloader can be easily changed using.
In this conventional structure, a hoisting operation tool for operating a hydraulic cylinder for swinging the unloader of the unloader is provided on the driver seat side. Therefore, the unloader can be swung up and down while sitting on the driver's seat, which is useful in that it can be used conveniently.

  However, in this structure, the discharge clutch for starting the grain discharge from the unloader and stopping the discharge is provided at a location away from the driver seat. Therefore, a series of operations from swinging up and down of the unloader to starting and stopping discharging of the grains cannot be performed quickly while sitting on the driver's seat.

  An object of the present invention is to make it possible to quickly perform a series of operations from swinging up and down of an unloader to start and stop of grain discharge while sitting on a driver's seat.

The technical means of the combine in the present invention has structural features and operational effects in the following points.
[Solution 1]
The technical means of the present invention taken in order to solve the above problems includes a Glen tank for storing grains and an unloader for discharging the grains in the Glen tank provided in a self-propelled aircraft, The vertical cylinder having a horizontal cylindrical center extending in the extending direction of the grain outlet of the Glen tank, and a straight tubular vertical cylindrical section extending in the radial direction of the cylindrical cylinder. A grain discharge port is formed at the conveyance end portion of the unit, and the horizontal axis is in a retracted posture in which the conveyance termination portion is directed upward and a discharge posture in which the conveyance termination portion is directed outward. The unloader is configured so as to be freely switchable around the axis, and has a swing drive device that swings the unloader up and down around the horizontal axis, and discharges and stops discharging the grains in the grain tank. Driving A raising and lowering operation tool for raising and lowering the swing drive device, and a discharge operation tool for turning on and off the discharge clutch are provided at adjacent positions in the driving unit on the self-propelled machine body. It is that.

[Operation and effect of invention according to Solution 1]
According to the invention relating to the above solution 1, by providing the swing drive device that swings the unloader up and down, it is easy to perform the swing swing operation even in a relatively large unloader.
And the raising and lowering operation tool for raising and lowering the swing drive device and the discharge operation tool for turning on and off the discharge clutch of the unloader are provided in the driving unit on the self-propelled aircraft body and arranged at adjacent positions. Yes. Accordingly, there is an advantage that the undulation operation tool or the discharge operation tool can be selected while being positioned in the operation unit, and a quick grain discharge operation can be performed.

[Solution 2]
Another technical means of the present invention taken in order to solve the above-mentioned problem is that the undulating operation tool and the discharge operation tool are provided on the rear side of the operation unit.

[Operation and effect of invention according to Solution 2]
According to the invention relating to the above solution 2, the hoisting operation tool and the discharge operation tool are provided on the rear side of the driving unit, so that the operation from the driver's seat is not hindered when the combine is traveling. There is an advantage that the operation can be easily performed without any trouble.

[Solution 3]
Another technical means of the present invention taken in order to solve the above-mentioned problems is that the undulation operating tool and the discharge operating tool are provided at the rear part of the side panel provided in the operating part.

[Operation and effect of invention according to Solution 3]
According to the invention relating to the above solution 3, since the undulation operation tool and the discharge operation tool are provided at the rear part of the side panel, the position close to the driver's seat is not hindered during the work operation of the combine. There is an advantage that the operation can be performed without any trouble.

[Solution 4]
Another technical means of the present invention taken in order to solve the above problem is that the discharging operation tool is constituted by a lever that is operated to swing.

[Operations and effects of invention according to Solution 4]
According to the invention relating to the solution means 4 described above, there is an advantage that the grain discharging operation from the unloader can be easily performed by the swinging operation of the discharging operation tool.

[Solution 5]
Another technical means of the present invention taken in order to solve the above problems is that the discharge operation tool is provided in an operation box provided on a side panel, and the undulation operation tool is attached to the operation box. is there.

[Operation and effect of invention according to Solution 5]
According to the invention relating to the solution means 5 described above, the operation box equipped with the discharge operation tool is also used as a mounting means for the undulation operation tool, and the discharge operation tool and the undulation operation tool are arranged at close positions in a simple structure. It is obtained.

[Solution 6]
Another technical means of the present invention taken in order to solve the above-described problem is that the hoisting operation tool is provided at a position near the front of the operation box and closer to the driver's seat side in the driving unit. It is.

[Operations and Effects of Invention According to Solution 6]
According to the invention relating to the above solution 6, the hoisting operation tool is hoisted near the front of the operation box and near the driver's seat, that is, at a position near the driver's seat that is easy to operate. There is an operation tool. Therefore, there is an advantage that the user can easily operate without turning away from the hand and making it difficult to operate even if he / she turns back slightly to confirm the state of the later unloader.

[Solution 7]
Another technical means of the present invention taken in order to solve the above-mentioned problem is that the undulating operation tool is disposed on a lateral side of a lever guide of the discharge operation tool.

[Operation and effect of invention according to Solution 7]
According to the invention relating to the above solution 7, the hoisting operation tool is disposed on the lateral side of the lever guide of the discharge operating tool, that is, at a close position within the operation range of the lever guide in the front-rear direction. Has been. Therefore, the undulation operation tool can be easily operated in the same manner as the operation of the discharge operation tool.

[Solution 8]
Another technical means of the present invention taken to solve the above-described problems is that the hoisting operation tool performs an operation position for causing the unloader to stand up to the retracted posture side and an overturning operation to the discharge posture side. The operation switch is configured to include an operation switch for outputting an operation command to the swing drive device so that any one of the operation positions to be selected is selected.

[Operation and effect of invention according to Solution 8]
According to the invention relating to the solving means 8 described above, the raising / lowering operation tool is driven to swing so that either the operation position for performing the standing movement or the operation position for performing the depression movement is selected alternatively. Since the operation switch for outputting an operation command to the apparatus is provided, there is an advantage that the unloader posture can be easily switched only by operating the operation switch.

[Solution 9]
Another technical means of the present invention taken in order to solve the above-mentioned problem is that the hoisting operation tool is provided with two push operation portions configured to be able to swing a seesaw as the operation switch. It is.

[Operations and effects of invention according to Solution 9]
According to the invention relating to the solving means 9 described above, the hoisting operation tool is provided with two push operation parts configured to be able to swing the seesaw as the operation switch, and only one of the push operation parts is selected. There is an advantage that the position of the unloader can be switched by simple operation.

[Solution 10]
Another technical means of the present invention taken in order to solve the above-mentioned problem is that the undulation operation tool includes two button-type operation tools that can operate any one of the operation switches. It is.

[Operations and Effects of Invention According to Solution 10]
According to the invention relating to the above solution 10, the undulation operation tool is provided with two button type operation tools that can operate either one as an operation switch, and it is easy to select any one of the buttons. With the simple operation, there is an advantage that the posture of the unloader can be switched.

[Solution 11]
Another technical means of the present invention taken to solve the above-described problem is that the undulation tool detects an operation knob capable of switching between two positions as the operation switch, and a position where the operation knob is switched. That is, it is provided with a switch element.

[Operations and Effects of Invention According to Solution 11]
According to the invention relating to the solving means 11 described above, the hoisting operation tool includes, as operation switches, an operation knob that can be switched between two positions and a switch element that detects a position where the operation knob is switched. There is an advantage that the posture of the unloader can be switched by a simple operation only by operating the knob in any direction.

[Solution 12]
Another technical means of the present invention taken in order to solve the above-described problem is that the hoisting operation tool is set so that the operation positions of the operation switches are the inner side and the outer side of the self-propelled aircraft. It is that.

[Solution 12: Functions and Effects of the Invention]
According to the invention relating to the solving means 12 described above, the raising / lowering operation tool is set so that the operation position of the operation switch is the inner side and the outer side of the self-propelled airframe, and is associated with the unloading direction of the unloader. Thus, the operation direction is easy to operate with few erroneous operations.

[Solution 13]
Another technical means of the present invention taken in order to solve the above-mentioned problem is that, in the hoisting operation tool, the operation position of the operation switch is set in a direction along the hoisting swinging direction of the unloader. .

[Operations and Effects of Invention According to Solution 13]
According to the invention relating to the solving means 13, since the operating position of the operation switch is set in a direction along the swing movement direction of the unloader, the operation operation of the swing operation tool is related to the swing direction of the unloader. It is a little easy to operate.

[Solution 14]
Another technical means of the present invention taken to solve the above-mentioned problem is that the operation position of the operation switch in the hoisting operation tool is an operation position on the outer side of the self-propelled aircraft, and the unloading operation of the unloader is commanded. The stand-up operation of the unloader is commanded at the operation position on the inner side of the self-propelled aircraft.

[Operations and Effects of Invention According to Solution 14]
According to the invention according to the above solution 14, the unloader's lying down operation is commanded at the operation position on the outer side of the self-propelled aircraft, and the unloading operation of the unloader is commanded at the operation position on the inner side of the self-propelled aircraft. Therefore, since the inside / outside direction of the airframe matches the undulation direction of the unloader and it is easy to perceive sensibly, there is an advantage that an operation with fewer erroneous operations can be easily performed.

[Solution 15]
Another technical means of the present invention taken in order to solve the above-mentioned problems is that the undulation operation tool is set such that the operation position of the operation switch is an upper position and a lower position.

[Operations and Effects of Invention According to Solution 15]
According to the invention relating to the solving means 15, the hoisting operation tool is set so that the operation position of the operation switch is the upper position and the lower position, so the operation direction of the operation switch and the hoisting operation direction of the unloader There is an advantage that it is easy to associate and memorize.

[Solution 16]
The other technical means of the present invention taken in order to solve the above-mentioned problem is that the operation position of the operation switch in the raising / lowering operation tool is in an upper position where the unloading operation of the unloader is commanded, and the unloader is lowered in the lower position. The action is commanded.

[Operations and Effects of Invention According to Solution 16]
According to the invention relating to the above solution 16, the operation position of the operation switch in the raising / lowering operation tool is such that the unloading operation of the unloader is commanded at the upper position and the unloading operation of the unloader is commanded at the lower position. The switch operation position and the unloading operation direction of the unloader are easily associated with each other and stored, and there is an advantage that an operation with fewer erroneous operations can be easily performed.

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 the support structure of a Glen tank and an unloader. It is a rear view which shows the support structure of a Glen tank and an unloader. It is a vertical side view in the connection location of a Glen tank and an unloader. It is a rear view which shows the lower support body part of a support body. It is a cross-sectional top view which shows an unloader and a support structure. It is the VIII-VIII sectional view taken on the line in FIG. It is a conceptual diagram which shows the transmission system to a Glen tank. It is explanatory drawing which shows the positional relationship of an operation part and a discharge clutch. The arrangement | positioning of the various operation tools in a driving | operation part is shown, (a) is a whole top view and a partial enlarged view, (b) is a front view of a partial expansion location, (c) is a perspective view of a partial expansion location. The attachment structure of the hydraulic cylinder over a support body and an unloader is shown, (a) is the whole perspective view from the right rear, (b) is a perspective view which shows the connection structure in the 2nd end part. The mounting structure of the hydraulic cylinder over a support body and an unloader is shown, (a) is an overall perspective view from the right front, (b) is a perspective view showing a receiving portion, and (c) is a perspective view showing a locking mechanism portion. is there. It is a perspective view which shows the mounting structure of the hydraulic cylinder over a support body and an unloader. It is a perspective view which shows the control tower part. The piping system from the valve block on a body frame is shown, (a) is a top view, (b) is sectional drawing of a harness cover part. It is a conceptual diagram which shows the discharge attitude | position of the unloader with respect to a self-propelled body, (a) shows the attitude | position which an unloader faces right side outward, (b) shows the attitude | position which an unloader faces right side back, (c) is The unloader shows a posture facing backward. It is a conceptual diagram which shows each example of arrangement | positioning of the raising / lowering operation switch in planar view, (a) shows the state with which a 1st push operation part and a 2nd push operation part are located in a line with right and left, (b) is a 1st push operation. Shows a state in which the second push operation unit is located at the rear and the second push operation unit is arranged in the left and right, and (c) shows a state in which the first push operation unit is located in the front and the second push operation unit is located in the rear and is arranged in the left and right (D) shows a state in which the first push operation unit is positioned forward and the second push operation unit is positioned rearward and lined up forward and backward. It is a conceptual diagram which shows each example of arrangement | positioning by the front view of the raising / lowering operation switch, (a) shows the state with which a 1st push operation part and a 2nd push operation part are located in a line with right and left, (b) is a 1st push operation. (C) shows a state where the first push operation part is located on the upper outside and the second push operation part is located on the lower inner side. ) Shows a state in which the first push operation unit is located above and the second push operation unit is located below and are arranged vertically. It is a front view which shows another embodiment of the raising / lowering operation switch. It is a front view which shows another embodiment of the raising / lowering operation switch.

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.
The ordinary combine is provided with a driving unit B and a pre-cutting processing device 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 grain harvested by the pre-cutting processing device C The self-propelled machine A includes a full-throwing-type threshing device D into which the straw is fed and a Glen tank E that stores the grains from the threshing device D.

  Glen tank E has a working posture (posture shown 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 switchable to an inspection posture (posture indicated by a virtual line in FIG. 2) projecting laterally from A. An unloader F is provided on the rear surface of the Glen tank E. The unloader F undulates around the swing axis X in the front-rear direction so that the posture 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 that it can swing freely. A fuel tank 4 is provided on the vehicle body frame 10 at a location corresponding to the rear position of the Glen tank E at the rear end of the self-propelled aircraft A.

  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 device C is configured to scrape the tip of the planted culm by rotating the reel 5 and to cut the stock of the culm with a cutter 6. The harvested cereals (reached cereals) are laterally fed by the transverse auger 7 and gathered near the entrance of the feeder 8 so that the whole culm is fed backward by the feeder 8 and sent to the threshing device D. It is configured. Further, the pre-cutting processing device C is configured to be swingable up and down around a horizontal axis (not shown) on the rear end side of the feeder 8. An actuator (not shown) such as a hydraulic cylinder that swings up and down is provided, and the cutting height of the cereal can be adjusted by setting the swing amount by the operation of the actuator.

[Boarding Driving Department]
The driver B is provided with a box-shaped engine cover 11 that covers the upper side of the engine 3, and a driver seat 2 is provided on the upper surface of the engine cover 11. An air intake case 11A is formed on the outer side of the engine cover 11, and an air intake portion 11B is formed on the outer surface of the air intake case 11A.
A control tower 12 is erected on the front side of the driver's seat 2, and an operation tool that performs steering control of the self-propelled aircraft A and an operation tool that performs lifting control of the pre-cutting processing device C on the upper surface side of the control tower 12. A steering lever 13 is also provided.
As shown in FIGS. 10 and 11, a side panel 14 extending from the left lateral end position of the control tower 12 toward the rear side is provided on the left side of the driver seat 2. On the upper surface 14A of the front end portion of the side panel 14, a main transmission lever 15A and a sub transmission lever 15B are provided as a transmission operation tool 15 for controlling the traveling speed of the self-propelled machine body A.

A threshing clutch lever 16A and a reaping clutch lever 16B are provided on the upper surface 14A side of the side panel 14 at a position rearward of the speed change operation tool 15 in a state where they are arranged side by side. The threshing clutch lever 16A and the reaping clutch lever 16B operate the threshing clutch (not shown) in the threshing device D by turning the threshing clutch lever 16A back and forth, and cutting the threshing clutch lever 16B. The pretreatment device C is configured to perform an on / off operation of a cutting clutch (not shown).
Further, an operation box 17 equipped with a discharge clutch lever 18 is provided on the side panel 14 on the rear side of the threshing clutch lever 16A and the reaping clutch lever 16B. The discharge clutch lever 18 is an operation tool for performing an on / off operation of the discharge clutch G, which will be described later, in a state in which the grain discharge by the unloader F is enabled and a state in which the grain discharge is stopped.

As shown in FIGS. 10 and 11, the operation box 17 is provided at a location near the rear portion of the side panel 14 so as to bulge upward from the upper surface 14 </ b> A of the side panel 14. The position where the operation box 17 is present is a position corresponding to the left lateral portion of the driver seat 2 on the rear side of the position where the threshing clutch lever 16A and the reaping clutch lever 16B are present in the front-rear direction. In the left-right direction, it is biased toward the driver's seat 2 in the left-right width direction of the upper surface 14A of the side panel 14.
The operation box 17 is provided with a lever guide 17A extending over the upper surface side and the front surface side. The discharge clutch lever 18 is pivotally supported around the horizontal axis p1 provided in the operation box 17 in the left-right direction so that the discharge clutch lever 18 is swingably operated along the lever guide 17A. Yes.
Accordingly, as shown in FIG. 11 (c), the discharge clutch lever 18 is operated by cutting the discharge clutch G in a standing posture in which the grip portion 18a is positioned upward, and in the forward tilt position in which the grip portion 18a is positioned forward. G is configured to be entered and operated. When the discharge clutch lever 18 is operated to the engaged position, the discharge clutch G is operated to be engaged, the driving force from the engine 3 is transmitted to the bottom screw 21 of the Glen tank E, and the unloader F is driven so that the Glen tank E is driven. Kernels are discharged from When the discharge clutch lever 18 is operated to the cut position, the discharge clutch G is turned off, the driving force from the engine 3 is cut off, and the grain discharge from the glen tank E is stopped.

As shown in FIGS. 11A to 11C, a box shape attached to the front side of the operation box 17 so as to protrude toward the right side where the driver's seat 2 exists. The switch operation unit 17B exists. This switch operation part 17B is for equip | providing the raising / lowering operation switch 19 (equivalent to a raising / lowering operation tool) for raising / lowering the unloader F, and inclined frontward and upward in the front part of the switch operation part 17B. A undulation operation switch 19 is provided on the surface.
The hoisting operation switch 19 includes a first push operation unit 19a for transmitting an ascending command to the unloader F and a second push operation unit 19b for transmitting a descending command arranged in the left-right direction and close to the driver seat 2 ( The second push operation unit 19b is disposed on the outer side of the machine body, and the first push operation unit 19a is disposed on the far side (the machine body side). When the first push operation unit 19a and the second push operation unit 19b are alternately pushed, the undulation operation switch 19 swings the seesaw. Along with the rocking of the seesaw operation switch 19, a switch element (not shown) composed of a self-returning pressure-sensitive switch built in the switch operation unit 17 B is turned on and off, and the unloader F Ascending / descending control commands are output to the hydraulic cylinder 60, which is a swing drive device.

The discharge clutch lever 18 and the raising / lowering operation switch 19 arranged in this way are located on the left lateral side at a position near the rear of the driver seat 2 and at a position where the lever guide 17A of the discharge clutch lever 18 exists. They are arranged side by side in the left-right direction. Therefore, the driver sitting on the driver's seat 2 operates conveniently when he / she looks back and visually recognizes the undulation state of the unloader F and operates the undulation switch 19 and the discharge clutch lever 18 with his left hand. easy.
That is, since the discharge clutch lever 18 and the raising / lowering operation switch 19 are close to each other, it is easy to confirm the location of the discharge clutch lever 18 and the raising / lowering operation switch 19 by slightly moving the hand. Then, by using the discharge clutch lever 18 and the raising / lowering operation switch 19 having different operation forms while being close to each other, it is easy to determine which of the discharge clutch lever 18 and the raising / lowering operation switch 19 is to be operated. Can be determined.

The hoisting operation switch 19 has a first push operation part 19a for transmitting an ascending command to the unloader F on the left side, which is closer to the driver seat 2, and a second pushing operation for transmitting the descending command to the unloader F. The part 19b is arranged so as to exist on the side far from the driver seat 2. Accordingly, the positions of the first push operation unit 19a and the second push operation unit 19b are tilted to the right side by the lowering operation and extended to the outer side of the machine body, and the unloader F is in a state of rising to the left side by the rising operation. It can be recognized that the state matches the direction of the operation form, and it is easy to reduce erroneous operations.
Further, the discharge clutch lever 18 is in a discharge stop state in which the discharge clutch G is turned off when the grip portion 18a is in an upright position where the grip portion 18a is positioned upward. It is a dischargeable state in which G is entered and operated. Therefore, the transition to the dischargeable form of the unloader F is accompanied by a downward movement, and the operation of the discharge clutch lever 18 to the dischargeable state is accompanied by the same movement in the downward direction, ie, the posture switching to the forward leaning posture. Yes, it is easy to operate with few mistakes because it is an operation that matches sensibly.

The steering lever 13 provided on the upper surface side of the control tower 12 is maintained in a neutral posture in a non-operating state. By performing a swinging operation in the left-right direction based on this neutral posture, a mission case The steering clutch built in the vehicle is controlled to realize the steering (turning) of the self-propelled aircraft A. Further, by operating the steering lever 13 in the front-rear direction, the above-described actuator is controlled to raise and lower the cutting pretreatment device C.
The shift operating tool 15 shifts the continuously variable transmission by an operation in the front-rear direction to change the traveling speed. The threshing clutch lever 16 </ b> A is configured to perform an on / off operation of a threshing clutch that interrupts power to the threshing device D by an operation in the front-rear direction. The reaping clutch lever 16B is configured to perform an on / off operation of the reaping clutch that performs intermittent power to the pre-harvesting processing device C by an operation in the front-rear direction.

  As shown in FIGS. 9 and 10, a discharge clutch G that transmits 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 18 is linked to operate the discharge clutch G. ing. With such a configuration, by operating the discharge clutch lever 18 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.

As shown in FIGS. 15 and 16, the control tower 12 is mounted and installed at the front end portion of the vehicle body frame 10, and a hydraulic valve block 70 is provided inside the control tower 12.
This hydraulic valve block 70 includes a cutting lift valve (not shown) for supplying and discharging pressure oil to a cutting height adjusting cylinder 71 that moves the cutting pretreatment device C up and down, and a scraping of the cutting pretreatment device C. A scraping height adjustment valve (not shown) for supplying and discharging pressure oil to and from the reel extending cylinder 72 for extending the height of the take-in reel 5 and the unloading and swinging operation of the unloader F are performed. A valve for unloading operation (not shown) for forming the same is formed in a common single block.
The hydraulic valve block 70 is mounted at a position facing an opening 73 provided on the wall surface of the rising portion of the control tower 12, and an inspection from the outside is performed by opening a lid 74 that closes the opening 73. It is comprised so that it can perform easily.

The hydraulic valve block 70 is connected to the cutting height adjusting cylinder 71 and the reel extending cylinder via the hydraulic pipes 75a, 75b and 75c connected to the supply / discharge port (not shown) of the hydraulic valve block 70. 72 and a hydraulic cylinder 60 for swinging up and down the unloader F provided at the rear portion of the vehicle body frame 10. The hydraulic pipe 75c for the hydraulic cylinder 60 for swinging the unloader F up and down bypasses the outside of the engine 3 disposed on the vehicle body frame 10, and is provided between the left and right threshing devices D and the Glen tank E. In between, it passes through the inside of the rectangular tubular harness cover 10b disposed along the front-rear direction. An oil supply pipe 76 that connects the engine 3 and the fuel tank 4 is also inserted into the harness cover 10b.
A hydraulic oil tank 77 provided at the left front end of the vehicle body frame 10 is also connected to the hydraulic valve block 70 via a hydraulic oil supply / discharge pipe 75d so that hydraulic oil can be supplied and discharged.

[Threshing equipment]
The threshing device D is an axial flow type barrel (not shown) that is driven and rotated around the axis of the posture along the front-rear direction of the self-propelled machine body A so as to perform the 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. The grain selected in the sorting apparatus is supplied to the grain tank E by the cerealing apparatus 9, and the sawdust other than the grains falls and is released to the rear of the self-propelled machine A from the rear part of the sorting apparatus.

[Glen tank]
As shown in FIG. 1 and FIGS. 3 to 6, the Glen tank E includes a bottom screw 21 that feeds grains stored in the tank body 20 rearward, at the bottom of the tank body 20. Most of the bottom wall 20A of the tank body 20 is lower in the left and right direction so that the stored grain flows down to the outside of the self-propelled aircraft A in the working posture stored in the self-propelled aircraft A. It is formed on an inclined surface. Since it is such a structure, the position of the bottom screw 21 is deviated to the outer side of the self-propelled aircraft A.
As shown in FIG. 9, the front end of the screw shaft 21A of the bottom screw 21 protrudes forward from the front wall 20f of the tank body 20, and an intermediate shaft 22 in a lateral orientation is connected to the protruding portion via a bevel gear 21B. ing.
Engine power is transmitted to the intermediate shaft 22 via the output shaft 3 a of the engine 3, the belt transmission mechanism 23, and the input shaft 24. The intermediate shaft 22 is provided at the front lower portion of the tank body 20 along the front wall 20 f of the tank body 20.

  The above-described discharge clutch G is configured in a belt tension type in which the driving force of the belt transmission mechanism 23 that transmits the driving force from the engine 3 to the intermediate shaft 22 is switched between a belt tension state and a relaxed state by switching the driving force. Has been. The discharge clutch lever 18 is configured to interrupt power by adjusting the belt tension of the belt transmission mechanism 23.

The rear end of the screw shaft 21A of the bottom screw 21 projects rearward from the rear wall 20r of the tank body 20, and the axis of the screw shaft 21A and the swing axis X of the unloader F are configured to coincide with each other. Has been.
The unloader F includes an elbow part 30 at an introduction side end corresponding to the upper side in the grain conveyance direction, and a straight tubular vertical path that forms a straight vertical conveyance path R on the lower conveyance side of the elbow part 30. The cylinder part 31 is connected.
On the rear wall 20r of the tank body 20, a discharge cylinder 41C having a grain discharge port 20B for sending the grain sent from the bottom screw 21 to the unloader F is integrally connected and fixed in a state of protruding rearward. ing. This discharge cylinder portion 41C also serves as a part of the lower support portion 41 of the support 40 described later, and the inner diameter closer to the rear wall 20r is closer to the grain discharge port 20B side from the rear wall 20r. It is formed in a cylindrical shape having a slight taper with a small diameter, and is arranged so that its central axis coincides with the axis of the screw shaft 21A and the swing axis X of the unloader F.
For this reason, the upper end portion of the elbow portion 30 existing on the swing center side of the unloader F is fitted into the large diameter portion formed on the inner peripheral side of the rear end side of the discharge cylinder portion 41C. Thus, the entire unloader F including the elbow part 30 is configured to be swingable about the swing axis X.

As shown in FIGS. 3 and 5, the elbow part 30 has an introduction cylinder part 30A that is fitted into the discharge cylinder part 41C from behind and a lead-out cylinder part 30B that is continuous in an attitude perpendicular to the introduction cylinder part 30A. doing.
Therefore, the elbow part 30 is rotatably fitted to the discharge cylinder part 41C fixed to the tank body 20, and the collar part 32 formed on the outer peripheral part of the introduction cylinder part 30A is discharged. The shaft portion 41C is configured to be prevented from coming off in the axial direction by engaging in the radial direction with hook-like stop plates 33 bolted to three locations in the circumferential direction at the rear end portion of the cylinder portion 41C.

[Support structure]
A support structure using the support 40 and the vertical frame 50 will be described.
As shown in FIGS. 3 and 6, the support 40 includes a lower support part 41 that supports the cylindrical discharge cylinder 41C described above, and a cylindrical upper support part that is integrally fixed to the upper part. 42 and is formed in a columnar shape.
Of the support body 40, the lower support body portion 41 includes a pivot portion 41 </ b> D that is fitted into a vertical support cylinder hole 10 a provided at the rear portion of the vehicle body frame 10 at the lower end portion. And is rotatably supported.
The central axis of the pivot portion 41D and the central axis of the cylindrical portion of the upper support portion 42 are collinear with each other, and this constitutes the vertical axis Y that is the rotation center of the Glen tank E. Yes. That is, the vertical axis Y is the center of rotation of the support body 40 in which the central axis of the pivot portion 41D and the central axis of the cylindrical portion of the upper support body portion 42 coincide with the center of the area of the support body 40 in plan view. It has become. The Glen tank E is connected to the upper end portion of the support body 40 via the connection fitting 25 and is configured to rotate integrally, whereby the vertical axis Y is the center of rotation of the Glen tank E. It has become.

  As described above, the Glen tank E is connected to the upper end portion of the support body 40 by the connecting bracket 25 and the lower side is supported by the support body 40 via the discharge cylinder portion 41 </ b> C fixed to the tank body 20. Is supported by the lower support portion 41. Accordingly, the Glen tank E is configured to be rotatable around the vertical axis Y that is the center of rotation of the support body 40 while being supported by the support body 40 on both upper and lower sides.

The lower support body portion 41 includes a cylindrical discharge cylinder portion 41C provided with the grain discharge port 20B, an upper leg portion 41A formed on the upper half side of the cylindrical discharge cylinder portion 41C, and a lower half portion. The lower leg portion 41B formed on the side and the pivot portion 41D inserted into the support cylinder hole 10a of the body frame 10 are integrally formed.
The upper leg 41A has an upper end connected to the lower end of the upper support portion 42, and a lower end formed integrally with the upper half side of the cylindrical discharge cylinder 41C. The lower leg 41B has an upper end formed integrally with the lower half side of the cylindrical discharge cylinder 41C, and a lower end formed integrally with the pivot 41D.

As shown in FIG. 6, the lower support portion 41 includes a cylindrical discharge cylinder portion 41 </ b> C positioned at an intermediate portion in the vertical direction, and an introduction cylinder portion 30 </ b> A of the elbow portion 30 of the unloader F. The portion 42 is formed in a bent shape in rear view so as to be located on the right outer side of the machine body from the longitudinal axis Y that is the central axis of the cylindrical portion. That is, the upper leg portion 41A connecting the lower end portion of the upper support portion 42 and the upper half side of the cylindrical discharge cylinder portion 41C, the lower half side of the cylindrical discharge cylinder portion 41C, and the upper end portion of the pivot portion 41D The lower leg portion 41B is connected to the cylindrical discharge cylinder portion 41C so as to be inclined toward the outer side of the machine body.
In this way, the cylindrical discharge cylinder portion 41C and the introduction cylinder portion 30A of the elbow portion 30 of the unloader F are located on the right outer side of the body from the vertical axis Y that is the central axis of the cylindrical portion of the upper support portion 42. However, it overlaps with the cylindrical part in the upper support part 42 in plan view as shown in FIGS. Therefore, in the left-right direction, the support body 40 is displaced toward the inward side of the self-propelled machine body A with respect to the introduction cylinder part 30A of the elbow part 30 of the unloader F. Are relatively few.
As a result, a distance L2 between the swing axis X in the introduction cylinder portion 30A of the elbow portion 30 of the unloader F and the longitudinal axis Y that is the central axis of the cylindrical portion in the upper support portion 42 is introduced. Since it can be set smaller than the sum of the radius of the cylindrical portion 30A and the radius of the upper support portion 42, the support 40 and the introduction cylindrical portion 30A of the elbow portion 30 of the unloader F are made relatively close in the left-right direction. Can be arranged.

The support body 40 is also connected to a vertical frame 50 erected on the vehicle body frame 10.
The vertical frame 50 is formed in a rectangular column shape, and a lower end portion is bolted to the vehicle body frame 10 and fixed. A horizontal member 51 extending toward the horizontal side wall of the threshing device D located on the left side is connected to the upper end portion of the vertical frame 50, and the extending end of the horizontal member 51 is the horizontal side wall of the threshing device D. Are connected and fixed.
Further, the upper end portion of the vertical frame 50 and the intermediate position in the vertical direction of the upper support portion 42 of the support body 40 are connected by a rotation connecting member 52. As shown in FIGS. 4 and 7, the rotary connecting member 52 is constituted by a band plate-like member, and the band plate-like member is wound around the outer periphery of the cylindrical portion of the upper support portion 42 so as to be held. The support 40 is configured to regulate the position of the support 40 in the horizontal direction while allowing the support 40 to rotate.

[Unloader]
The unloader F includes a vertical cylinder portion 31 connected to the lower side in the grain conveying direction of the elbow portion 30 located at the introduction side end.
The vertical cylinder portion 31 includes a straight tubular discharge cylinder 34 and a discharge screw 35 disposed inside the discharge cylinder 34 so as to form a linear vertical conveyance path R therein, and a discharge side end. The part is provided with a grain outlet 36 for guiding the grain in a direction orthogonal to the longitudinal direction of the discharge cylinder 34.
The unloader F is configured to be switchable between a retracted posture with the discharge side end facing upward and a discharge posture with the discharge side end facing outward.
As shown in FIG. 4, in the retracted posture, the center axis Z (corresponding to the cylinder axis) of the vertical cylinder portion 31 is slightly tilted inward of the self-propelled aircraft A with respect to the vertical line. For this reason, it becomes the attitude | position which the vertical cylinder part 31 inclined to the left side by the back view. In the discharging posture, the central axis Z of the vertical cylinder portion 31 is in a posture slightly upward from the horizontal line, and the vertical cylinder portion 31 is in an inclined posture that rises to the right in rear view.

The base end side of the discharge screw 35 is configured as a double screw in which two screws are formed with respect to the screw shaft 35A, and the base end side can reliably convey the grain. The screw shaft 35A is supported so as to be rotatable about the central axis Z.
A part of the screw shaft 21A of the bottom screw 21 is inserted into the introduction cylinder part 30A of the elbow part 30, and a part of the discharge screw 35 is inserted inside the lead-out cylinder part 30B of the elbow part 30. . A bevel gear mechanism 37 having a pair of bevel gears 37 </ b> G that rotate about axes orthogonal to each other so as to transmit the driving force of the screw shaft 21 </ b> A to the screw shaft 35 </ b> A of the discharge screw 35 is provided inside the elbow portion 30.

From such a transmission structure, the driving force of the bottom screw 21 can be transmitted to the discharge screw 35 via the bevel gear mechanism 37 of the elbow part 30. The grain of the Glen tank E is conveyed from the bottom screw 21 to the discharge screw 35 and is discharged from the grain discharge port 36 at the conveyance end of the unloader F.
In the unloader F, the rotation direction of the bottom screw 21 is set counterclockwise (counterclockwise) when the Glen tank E is viewed from the rear. Therefore, when unloading the grain from the unloader F, a torque in the lifting direction that moves the unloader F toward the retracted posture acts on the vertical cylinder portion 31 of the unloader F.

In this combine, the rocking center of the Glen tank E and the vertical axis Y that is the central axis of the support 40 are arranged at positions close to the rear wall 20r of the Glen tank E. With the vertical axis Y as a reference, the axial center of the screw shaft 21A and the swing axis X of the unloader F are arranged on the laterally outer side of the self-propelled aircraft A in the left-right direction. A central axis Z of the unloader F is set at the rear position.
As described above, the swing axis X is arranged on the laterally outer side of the self-propelled machine A with respect to the vertical axis Y, and the bottom screw 21 is arranged in a state of being deviated on the laterally outer side of the self-propelled machine A. The unloader F is generally disposed near the outer portion of the self-propelled aircraft A. And in the discharge attitude | position which rock | fluctuated the discharge side edge part of the unloader F outside, the length of the vertical cylinder part 31 of the unloader F is utilized effectively, and the grain discharge port 20B is made into the end part of the self-propelled machine body A. It can be discharged at a distance.

  In addition, as shown in FIG. 4, when the Glen tank E is in the working posture and the unloader F is in the retracted posture, the support 40 and the vertical cylinder portion 31 of the unloader F partially overlap in the rear view. Is arranged. Thereby, the support body 40 and the unloader F can be made to adjoin in the horizontal width direction of the self-propelled machine body A, and the space for arranging them can be saved.

[Drive swing mechanism]
A swing drive device that swings the unloader F up and down will be described.
The swing drive device is constituted by a double-acting hydraulic cylinder 60 that is driven to extend and contract. As shown in FIGS. 3 to 5, the hydraulic cylinder 60 is provided across the support body 40 erected on the vehicle body frame 10 and the unloader F.
That is, the upper end portion of the cylinder tube 61 located on one end side of the hydraulic cylinder 60 is connected to the support body 40 side, and the lower end portion of the piston rod 62 located on the other end side is connected to the unloader F side. Hereinafter, the end on the cylinder tube 61 side is referred to as a first end, and the end on the piston rod 62 side is referred to as a second end.

A cylindrical mounting portion 40A that is externally fitted to the support 40 so as to be relatively rotatable is provided at an intermediate position in the vertical direction of the support 40 to which the first end of the cylinder tube 61 is connected. The cylindrical mounting portion 40A is for mounting a mounting bracket 44 and a receiving portion 45 described later.
The location where the cylindrical mounting portion 40A is mounted on the support body 40 is below the location where the longitudinal frame 50 fixed to the vehicle body frame 10 and the support body 40 are connected by a belt-like rotary connecting member 52. It is. The upper end side of the cylindrical mounting portion 40A is connected to the lower end side of the rotary connecting member 52, and the strip-like rotary connecting member 52 fixed to the vertical frame 50 is connected to the upper side of the cylindrical mounting portion 40A. It also serves as a means to prevent slipping out and restrict downward movement.
A first end portion of the cylinder tube 61 is swingably connected via a connecting pin 63 to a mounting bracket 44 provided on the outer peripheral portion of the cylindrical mounting portion 40A.

The second end portion, which is the end portion of the piston rod 62 located on the other end side of the hydraulic cylinder 60, can swing around the connecting pin 64 with respect to the connecting bracket 39 provided on the vertical cylinder portion 31 of the unloader F. It is connected to. The connecting bracket 39 is attached to a cylindrical reinforcing member 38 that is externally fitted to a portion adjacent to the elbow portion 30 in the vertical cylinder portion 31 of the unloader F and is fixed by welding.
The hydraulic cylinder 60 arranged in this way has a first end connected to the support body 40 at an upper position and an inward side of the self-propelled aircraft A, and a second end connected to the unloader F. Is located at the lower position and on the laterally outer side of the self-propelled aircraft A.

As shown in FIG. 3, the longitudinal axis Y of the support body 40 erected on the rear side of the Glen tank E and the central axis Z of the vertical cylinder portion 31 of the unloader F are parallel to each other as viewed from the side. The unloader F is located at a predetermined small interval in the front-rear direction with respect to the support body 40, and the hydraulic cylinder 60 is disposed in a space having this small interval, and the longitudinal axis Y of the support body 40, A center line CL parallel to the center axis Z of the vertical cylinder portion 31 of the unloader F in a side view is provided.
That is, the mounting bracket 44 on the support 40 side protrudes rearward from the rear end edge of the outer peripheral surface of the support 40 in a side view, and the connection bracket 39 on the unloader F side is a vertical cylinder of the unloader F in a side view. Projecting forward from the front edge of the outer peripheral edge of the portion 31. The hydraulic cylinder 60 connected to the mounting bracket 44 and the connecting bracket 39 has a center line CL that is parallel or substantially parallel to the longitudinal axis Y and the central axis Z in a side view. Is attached.
The swing axis X of the unloader F is orthogonal to the longitudinal axis Y, the center axis Z, and the center line CL. Therefore, when the unloader F undulates and swings as the hydraulic cylinder 60 expands and contracts, the possibility that the hydraulic cylinder 60 interferes with the unloader F and the support body 40 can be avoided.

As shown in FIG. 4, in the rear view, the vertical cylinder portion 31 of the unloader F has the central axis Z of the unloader F with respect to the longitudinal axis Y of the support body 40 erected on the rear side of the Glen tank E. In the retracted posture of F, it is received by a receiving portion 45 described later while being slightly tilted inward of the self-propelled aircraft A.
In this retracted posture, the center line CL of the hydraulic cylinder 60 is provided in a state of being inclined more toward the inward side of the self-propelled machine body A than the inclination of the center axis Z of the vertical cylinder portion 31 of the unloader F. Yes.
That is, the mounting bracket 44 on the support body 40 side to which the first end portion of the hydraulic cylinder 60 is connected protrudes to the right side from the outer peripheral surface of the support body 40 in the rear view, and the connection pin 63 is connected to the support body 40. It is located on the right side of the right edge of the outer peripheral surface. The unloader F side connecting bracket 39 to which the second end portion of the hydraulic cylinder 60 is connected also protrudes to the right side of the outer peripheral surface of the unloader F in the rear view, and the connecting pin 64 is provided on the outer peripheral surface of the unloader F. It is located on the right side of the right edge. Then, the swing axis X of the unloader F is positioned laterally outward of the self-propelled machine A from the longitudinal axis Y of the support 40. As a result, the amount of misalignment between the vertical axis Y and the swing axis X in the left-right direction is in contact with the left side edge of the unloader F at the location where the swing axis X of the unloader F exists and the receiving portion 45. This is larger than the amount of misalignment in the left-right direction with respect to the left side edge of the unloader F at the location where the unloading occurs. For this reason, the inclination of the hydraulic cylinder 60 is inclined more than the inclination of the unloader F supported by the receiving portion 45.

The inclination of the hydraulic cylinder 60 sets the expansion / contraction direction of the hydraulic cylinder 60 with a force line that is as close as possible to the direction perpendicular to the central axis Z of the vertical cylindrical portion 31 of the unloader F when the unloader F is smoothly raised and swung. Useful to be. In addition, since the mounting bracket 44 that protrudes to the right side from the right end edge of the outer peripheral surface of the support 40 and is connected to the first end of the hydraulic cylinder 60 is provided, the mounting bracket 44 is, for example, This is effective in reducing the length of the hydraulic cylinder 60 as much as possible as compared with a case where the outer peripheral surface of the support 40 protrudes to the left side from the left edge.
The second end of the hydraulic cylinder 60 is connected to a connecting bracket 39 that is mounted on a cylindrical reinforcing member 38 that is externally fitted at a location adjacent to the elbow 30 in the vertical cylinder 31 of the unloader F. . This is because the rotation radius of the movement locus r1 of the second end portion around the swing axis X of the unloader F is reduced by connecting at a position closest to the elbow portion 30 in the vertical cylinder portion 31, and hydraulic pressure is reduced. This is effective in reducing the amount of expansion and contraction of the cylinder 60.

[First end connection structure]
The mounting bracket 44 to which the first end portion of the hydraulic cylinder 60 is connected, and the cylindrical mounting portion 40A including the receiving portion 45 that supports the retracted posture of the unloader F are configured as follows.
The cylindrical mounting portion 40 </ b> A includes a cylindrical cylindrical member 43 that is externally fitted to the outer peripheral surface of the support body 40 and fixed by welding. The mounting bracket 44 and the receiving bracket 44 are attached to the outer peripheral surface of the cylindrical member 43. A portion 45 is provided.
As described above, the support body 40 is supported so as to be capable of relative rotation in a state where the upper part is held in the belt-plate-like rotary connecting member 52 attached to the vertical frame 50 fixed to the vehicle body frame 10. Therefore, the support body 40 is configured to be rotatable with respect to the vehicle body frame 10 while the position of the support body 40 in the horizontal direction is restricted. At this time, the cylindrical mounting portion 40A also rotates together with the support body 40.

The mounting bracket 44 of the cylindrical mounting portion 40 </ b> A is provided above the receiving portion 45. As shown in FIGS. 12 to 14, the mounting bracket 44 is configured by a channel-shaped member having an open side facing downward, and a lateral side portion thereof is cut out in an arc shape along the outer peripheral surface of the cylindrical member 43. Side end 44a.
The horizontal end side 44 a is welded in a state of being applied to the outer peripheral surface of the cylindrical member 43, and the mounting bracket 44 is integrally fixed to the cylindrical member 43.
The longitudinal direction of the mounting bracket 44 extends in the left-right direction and protrudes to the right side outward from the right side edge of the support 40 in the rear view, and the protruding portion of the hydraulic cylinder 60 is provided at the protruding part. An insertion hole 44b for the connecting pin 63 for connecting the first end is formed.

The receiving portion 45 that supports the retracted posture of the unloader F is provided on the outer peripheral portion of the cylindrical member 43 at a position below the location where the mounting bracket 44 is provided.
As shown in FIGS. 12A and 12B, the receiving portion 45 is a receiving curve facing the outer peripheral surface of the vertical cylindrical portion 31 of the unloader F in the retracted posture tilting inward of the self-propelled aircraft A. It is constituted by a series of plate-like bodies in which a recess 45a and a curved recess 45b for mounting facing the outer peripheral surface of the support 40 are formed.
The plate-like body constituting the receiving portion 45 is formed along a plane in a direction orthogonal to the central axis of the vertical cylinder portion 31 of the unloader F located in the retracted posture. The plate-like body is welded in a state in which the curved concave portion 45 b for attachment is applied to almost the entire circumference of the outer peripheral surface of the support body 40, and the plate-like body is fixed to the support body 40.
In the curved concave recess 45a for receiving, the arc-shaped contact plate member 45c facing the outer peripheral surface of the vertical cylindrical portion 31 positioned in the retracted position is welded along the inner peripheral edge of the curved concave portion 45a and over the plate-like body. It is fixed. Thus, by providing the contact plate member 45c, the contact area with respect to the outer peripheral surface of the vertical cylinder part 31 of the unloader F becomes large. As a result, the possibility that the outer peripheral surface of the vertical cylindrical portion 31 is damaged or deformed is reduced.

The receiving portion 45 is provided with a channel-shaped fixed side stopper piece 46a for constituting the lock mechanism 46, and a pin hole 46b penetrating the fixed side stopper piece 46a and the plate-like body of the receiving portion 45. . On the outer peripheral surface side of the vertical cylinder portion 31 of the unloader F, a movable side stop piece 31a is provided at a position overlapping the upper side of the fixed side stop piece 46a in the retracted posture of the unloader F. The movable side stopper piece 31a is also formed with a pin hole 31b at a position that matches the pin hole 46b on the fixed side stopper piece 46a side when the unloader F is retracted.
A lock for fixing the unloader F in the retracted position by the fixed-side stopper piece 46a, the movable-side stopper piece 31a, and the L-shaped locking pin 46c penetrating the pin holes 46b and 31b formed in the fixed-side stopper piece 46a. A mechanism 46 is configured.
The receiving portion 45 is also formed with a holding hole 45d for inserting the locking pin 46c when the unloader F is not fixed to the lateral side portion of the fixed side stopper piece 46a.

[Second end connection structure]
The connecting bracket 39 to which the second end of the hydraulic cylinder 60 is connected is configured as follows.
As shown in FIGS. 12 and 14, the connecting bracket 39 is attached to a cylindrical reinforcing member 38 that is externally fitted and fixed to a portion adjacent to the elbow portion 30 in the vertical cylinder portion 31 of the unloader F. It is installed.
The connecting bracket 39 includes a channel-shaped first member 39A that is open to the rear side and protrudes toward the right lateral side away from the reinforcing member 38 along the tangential direction with respect to the outer peripheral surface of the reinforcing member 38. Yes. A second member 39B having a crank-shaped cross section is coupled in a direction orthogonal to the protruding end of the first member 39A, and a channel-shaped third member 39C that is open upward is coupled to the front end of the second member 39B. Yes.
In addition, a flat plate-like fourth member 39D is fixed by welding between the upper and lower wall portions of the first member 39A across the outer peripheral surface of the reinforcing member 38 and the second member 39B. The first member 39A, the second member 39B, the third member 39C, and the fourth member 39D constitute a connecting bracket 39.

The longitudinal direction of the first member 39A is the left-right direction orthogonal to the swing axis X of the unloader F, and the lateral direction of the self-propelled aircraft A from the outer peripheral surface of the reinforcing member 38 in the vertical cylindrical portion 31 of the unloader F in the retracted position. It is provided so as to protrude toward the side.
The second member 39 </ b> B extends in the direction along the swing axis X of the unloader F in the longitudinal direction. The rising piece portion 39Ba of the crank-shaped cross section faces the protruding tip of the first member 39A, and the horizontal piece portion 39Bb of the crank-shaped cross section is welded and fixed so as to face the lower surface side of the first member 39A. Further, the second member 39B is formed to protrude forward from the front end edge of the outer peripheral surface of the reinforcing member 38 in the vertical cylinder portion 31 of the unloader F in a side view.
The third member 39 </ b> C is provided with the open side of the channel shape facing the grain discharge direction of the unloader F. Further, the third member 39C is formed at a position protruding forward from the front end edge of the outer peripheral surface of the reinforcing member 38 with respect to the rising piece portion 39Ba and the horizontal piece portion 39Bb of the second member 39B. It is fixed by welding.

A through hole 39Ca having a center line in the front-rear direction along the swing axis X of the unloader F is formed in the third member 39C of the connecting bracket 39 thus configured. A second end portion of the hydraulic cylinder 60 is slidably connected through a connecting pin 64 inserted into the through hole 39Ca.
The connecting pin 64 provided on the connecting bracket 39 to which the second end portion is connected is lower than the connecting pin 63 of the mounting bracket 44 to which the first end portion is connected. It is provided so that it may be located in the side. Accordingly, in the hydraulic cylinder 60, the first end portion of each end portion in the expansion / contraction direction is located above the second end portion on the airframe side, and the expansion / contraction direction of the hydraulic cylinder 60 is self-propelled in a plan view. It is arranged in a state along the left-right direction of the airframe A.

As shown in FIG. 4, the hydraulic cylinder 60 arranged in this way has a second end that is more than a line segment L1 that connects the connecting pin 63 on the first end side and the swing axis X of the unloader F. The position of the connecting pin 64 is located on the lateral outer side of the self-propelled aircraft A. Therefore, the hydraulic cylinder 60 is configured to be most contracted in the retracted posture and extended most in the discharge posture.
The unloader F is in the process of shifting from the discharging posture to the retracting posture, and the self-propelled machine body moves from a state where the unloader F stands upright on the vertical axis of the swing axis X of the unloader F beyond the position on the vertical line of the swing axis X. The storage posture is slightly tilted inward of A.

In the hydraulic cylinder 60 that swings and drives the unloader F, pressure oil is supplied to the oil chamber below the cylinder tube 61 in the upward swinging process from the discharge posture until the unloader F stands upright on the vertical line of the swing axis X. Supply. At the same time, the pressure oil is discharged from the upper oil chamber so that the piston rod 62 can move in the contraction direction. At this time, the weight in the direction in which the unloader F tries to return to the discharge posture side always acts on the oil chamber below the hydraulic cylinder 60, and when the unloader F stands upright, the weight in that direction becomes zero.
In the swing stroke in which the unloader F moves to the retracted position beyond the position where the unloader F stands upright on the vertical axis of the swing axis X, the weight of the unloader F causes the piston rod 62 to move as the unloader F tilts toward the retracted position. It acts to push up in the shrinking direction.
Therefore, there is a possibility that the operating speed of the hydraulic cylinder 60 is increased in the swinging stroke to shift to the retracted posture, but by controlling the oil discharge speed from the oil chamber (not shown) on the upper side of the cylinder tube 61. The operating speed of the hydraulic cylinder 60 can be adjusted.

In the downward swing from the state where the unloader F is in the retracted position until the unloader F stands upright on the vertical line of the swing axis X, the pressure oil is supplied to the upper oil chamber of the cylinder tube 61. At the same time, pressure oil is discharged from the lower oil chamber (not shown) to allow the piston rod 62 to move in the extending direction.
At this time, the weight in the direction in which the unloader F tries to return to the storage posture side always acts on the oil chamber above the hydraulic cylinder 60, and when the unloader F stands upright, the weight in that direction becomes zero.
In the swing stroke in which the unloader F moves to the discharge posture beyond the position where the unloader F stands upright on the vertical axis of the swing axis X, the weight of the unloader F causes the piston rod 62 to move as the unloader F tilts toward the discharge posture. It acts to pull out in the extension direction.
Therefore, there is a possibility that the operating speed of the hydraulic cylinder 60 is increased in the swinging stroke that shifts to the discharging posture, but the operation of the hydraulic cylinder 60 is controlled by controlling the oil discharging speed from the oil chamber below the cylinder tube 61. The speed can be adjusted.

If the hydraulic cylinder 60 is a single-acting type, the unloader A having a structure in which the hydraulic cylinder 60 is stored with being slightly tilted inward of the self-propelled aircraft A cannot be driven smoothly. There is no such inconvenience due to the dynamic type.
That is, if the hydraulic cylinder 60 is a single-acting type and has a structure that supplies pressure oil to the lower oil chamber of the cylinder tube 61, pressure oil cannot be supplied to the upper oil chamber. From the state in which the unloader F is in the retracted position, it is impossible to perform the downward swing until the unloader F stands upright on the vertical line of the swing axis X.
If the hydraulic cylinder 60 is of a single-acting type and has a structure that supplies pressure oil to the upper oil chamber of the cylinder tube 61, pressure oil cannot be supplied to the lower oil chamber. From the state in which the unloader F is in the discharging posture, the ascending swing cannot be performed until the unloader F stands upright on the vertical line of the swing axis X.
By using the hydraulic cylinder 60 backward movement type of the present invention, the pressure oil can be supplied to the oil chamber on either the upper side or the lower side of the cylinder tube 61. Therefore, the unloader A having a structure in which it is tilted slightly toward the inward side of the self-propelled aircraft A can be driven to swing without any trouble.

[Other Embodiment 1]
In the embodiment, the structure using the hydraulic cylinder 60 is shown as the swing drive device for swinging the unloader F up and down, but the present invention is not limited to this.
For example, as a swing drive device, a wire connected to the vertical cylinder portion 31 of the unloader F may be wound up by a winch, and the winch may be driven in the forward and reverse directions by an electric motor.
Other configurations may be the same as those in the above-described embodiment.

[Second embodiment]
In the embodiment, the structure in which the support body 40 is configured to be rotatable with respect to the vehicle body frame 10 together with the grain tank E is illustrated, but the structure is not limited to this structure.
For example, the support body 40 is fixed to the vehicle body frame 10, a coupling member 25 that connects the support body 40 and the Glen tank E, and a bearing member that can rotate relative to the support body 40 are interposed. The Glen tank E may rotate relative to the support 40.
Other configurations may be the same as those in the above-described embodiment.

[3 of another embodiment]
In the embodiment, the hydraulic cylinder 60 for swinging the unloader F up and down is disposed over the support 40 and the unloader F, but the structure is not limited to this.
For example, it is possible to adopt an appropriate configuration such as arranging the hydraulic cylinder 60 across the unloader F and a member provided on the self-propelled machine A separately from the support body 40.
Other configurations may be the same as those in the above-described embodiment.

[4 of another embodiment]
In the embodiment, the structure in which the receiving portion 45 for maintaining the retracted posture of the unloader F is provided on the support body 40 is shown, but the present invention is not limited to this.
For example, the receiving portion 45 may be formed of a member different from the support body 40 and provided at a different location on the self-propelled machine body A instead of the support body 40.
Other configurations may be the same as those in the above-described embodiment.

[5 of another embodiment]
In the embodiment, the mounting bracket 44 on the support body 40 side protrudes rearward from the rear end edge of the outer peripheral surface of the support body 40 in a side view, and the first hydraulic cylinder 60 first projects from the mounting bracket 44. Although the thing of the structure which connected the edge part was illustrated, it is not restricted to this.
For example, the first end of the hydraulic cylinder 60 may be provided so as to partially overlap the support body 40 in a side view. The degree of overlap is preferably such that the first end of the hydraulic cylinder 60 is connected to the rear side of the machine body from the longitudinal axis Y of the support body 40.
Other configurations may be the same as those in the above-described embodiment.

[6 of another embodiment]
In the embodiment, the connecting bracket 39 on the unloader F side projects forward from the front end edge of the outer peripheral edge of the vertical cylindrical portion 31 of the unloader F in a side view, and the hydraulic cylinder 60 is connected to the connecting bracket 39. Although the thing of the structure which connected the 1st edge part was illustrated, it is not restricted to this.
For example, the second end of the hydraulic cylinder 60 may be provided so as to partially overlap the unloader F in a side view. The degree of the overlap is desirably such that the second end of the hydraulic cylinder 60 is connected to the front side of the machine body relative to the central axis Z of the unloader F.
Other configurations may be the same as those in the above-described embodiment.

[7 of another embodiment]
In the embodiment, the discharge side end portion of the unloader F is illustrated as being configured to tilt toward the inward side of the self-propelled aircraft A in the retracted posture, but is not limited thereto.
For example, in the retracted posture of the unloader F, the discharge side end portion may stand upright on the swing axis X of the unloader F, or may be configured to slightly tilt to the outside of the self-propelled aircraft A.
Other configurations may be the same as those in the above-described embodiment.

[8 of another embodiment]
In the embodiment, the return-acting type hydraulic cylinder 60 that extends and contracts is illustrated, but the present invention is not limited to this, and a single-acting hydraulic cylinder 60 may be configured. In this case, when the discharge-side end portion of the unloader F is configured to tilt toward the inward side of the self-propelled machine body A in the retracted posture, the unloader F in the retracted posture is positioned upright on the swing axis X. It is desirable to provide an urging spring that returns to
Other configurations may be the same as those in the above-described embodiment.

[9 of another embodiment]
In the embodiment, the lock mechanism 46 is provided across the unloader F and the support body 40, but the present invention is not limited to this.
For example, the lock mechanism 46 may be provided between the unloader F and an appropriate member on the self-propelled aircraft A.
Other configurations may be the same as those in the above-described embodiment.

[10 of another embodiment]
In the embodiment, the structure in which the cylinder tube 61 side of the hydraulic cylinder 60 is connected to the support body 40 and the piston rod 62 is connected to the unloader F side is shown, but the present invention is not limited to this.
For example, the cylinder tube 61 side may be connected to the unloader F side, and the piston rod 62 may be connected to the support 40 side.
Other configurations may be the same as those in the above-described embodiment.

[11 of another embodiment]
In the embodiment, the box-shaped switch operation unit 17B is configured as a separate member, but is not limited thereto.
For example, the switch operation unit 17B may be formed integrally with a part of the operation box 17.
Other configurations may be the same as those in the above-described embodiment.

[12 of another embodiment]
In the embodiment, the unloader F is configured such that the posture can be changed between a retracted posture in which the conveyance end portion is directed upward and a discharge posture in which the conveyance termination portion is directed to the right lateral outer side (see FIG. 17A). Although shown, it is not limited to this.
For example, as shown in FIG. 17 (b), the unloader F is configured to face the laterally outward side of the right-handed rear side of the self-propelled aircraft A in the discharging posture, or as shown in FIG. 17 (c), The unloader F may be configured to face to the rear side of the self-propelled aircraft A in the discharging posture.
Other configurations may be the same as those in the above-described embodiment.

[13 of another embodiment]
In the embodiment, as the hoisting operation tool, the first push operation unit 19a and the second push operation unit 19b are set so that the operation position of the hoisting operation switch 19 is the inner side and the outer side of the self-propelled aircraft A. In the example shown in FIG. 18 (a), the structure is not limited to such a structure.
For example, as shown in FIG. 18 (b) or FIG. 18 (c), the first push operation part 19a and the second push operation part 19b are located on the inner side and the outer side of the self-propelled aircraft A, Any one of them may be arranged obliquely so that one is located on the front side and the other is located on the rear side. Further, not only in the left-right direction of the self-propelled aircraft A, but as shown in FIG. 18D, the first push operation unit 19a is positioned in front of the second push operation unit 19b, or vice versa. Thus, it may be arranged on the inner side and the outer side in the direction along the front-rear direction.
Other configurations may be the same as those in the above-described embodiment.

[14 of another embodiment]
In the embodiment, the structure in which the operation position of the hoisting operation switch 19 is set in a direction along the hoisting swinging direction of the unloader F is shown. That is, in the unloader F that swings in the left-right direction as shown in FIG. 17A, the first push operation unit 19a and the unloading swinging direction of the unloader F in plan view as shown in FIG. The second push operation unit 19b is illustrated as being disposed in the left-right direction, but is not limited thereto.
For example, as shown in FIG. 17 (b), when the unloader F has a structure in which the unloader F is directed to the laterally outward side of the right-hand side of the self-propelled aircraft A in the discharging posture, The one push operation part 19a may be located diagonally to the left of the second push operation part 19b and arranged obliquely so as to follow the discharging posture of the unloader F.
In addition, as shown in FIG. 17C, when the unloader F has a structure in which the unloader F faces the rear side of the self-propelled aircraft A in the discharging posture, as shown in FIG. What is necessary is just to be arrange | positioned forward and backward so that it may be located in front of the 2nd pushing operation part 19b, and may follow the discharge attitude | position of the unloader F.

In the structure in which the operation position of the hoisting operation switch 19 is set in a direction along the hoisting and swinging direction of the unloader F, the hoisting and swinging direction of the unloader F and the hoisting operation switch 19 are set as in the above example. The arrangement direction of the operation position is not limited to being completely coincident, but may be configured as follows.
For example, in the unloader F that swings in the left-right direction as shown in FIG. 17A, in addition to FIG. 18A, as shown in FIG. 18B or FIG. It may have a structure arranged obliquely forward or obliquely rearward with respect to the F discharge direction. As described above, the arrangement direction of the operation position of the hoisting operation switch 19 may be substantially aligned with the discharging direction of the unloader F. The degree of deviation between the unloading direction of the unloader F and the arrangement direction of the undulation operation switch 19 is preferably within approximately 45 degrees.
Therefore, as shown in FIG. 17 (b), when the unloader F has a structure in which the unloader F is directed to the laterally outward side of the right-hand side of the self-propelled aircraft A in the discharging posture, FIG. 18 (a) or FIG. ), The arrangement direction of the operation position of the hoisting operation switch 19 may be a horizontal direction or a direction along the front-rear direction.
Further, as shown in FIG. 17 (c), when the unloader F has a structure in which the unloader F faces the rear side of the self-propelled aircraft A in the discharging posture, as shown in FIG. 18 (b) or FIG. 18 (c), The arrangement direction of the operation position of the hoisting operation switch 19 may be arranged diagonally forward or diagonally backward.
Other configurations may be the same as those in the above-described embodiment.

[15 of another embodiment]
In the embodiment, the first push operation unit 19a and the second push operation unit 19b are arranged side by side in the left-right direction so that the operation position of the hoisting operation switch 19 is the inner side and the outer side of the self-propelled aircraft A. Although an example of the structure provided in (for example, see FIG. 18A) is illustrated, it is not limited to such a structure.
For example, as shown in FIGS. 19A to 19C, the first push operation portion 19a of the hoisting operation switch 19 is arranged in the vertical direction so as to be positioned above the second push operation portion 19b. It may be a thing.
Other configurations may be the same as those in the above-described embodiment.

[16 of another embodiment]
In the embodiment, the undulation operation switch 19 has a structure in which the undulation operation switch 19 swings by seesaw by alternately pressing the first push operation unit 19a and the second push operation unit 19b. However, it is not limited to this.
For example, as shown in FIG. 20, the undulation operation switch 19 may be configured with two button-type operation tools 19 c and 19 d that can operate either one.
In the case of this structure, when one of the two button-type operating tools 19c and 19d is pushed in and the unloader F is operated to stand up or lie down, the other button-type operating tool is operated. What is necessary is just to make it return to the non-operation state which (19d or 19c) protruded.
Further, the present invention is not limited to this, and while either one of the button-type operation tools (19c or 19d) is being pushed in, the unloader F is operated to the standing or lying down side, and the button-type operation tool (19c or 19d) is pushed in. When the is released, the protruding non-operating state may be restored, and the unloader F may be configured to stop standing or operating on the lying side.
Other configurations may be the same as those in the above-described embodiment.

[17 of another embodiment]
In the embodiment, the undulation operation switch 19 has a structure in which the undulation operation switch 19 swings by seesaw by alternately pressing the first push operation unit 19a and the second push operation unit 19b. However, it is not limited to this.
For example, as shown in FIG. 21, the undulation operation switch 19 includes an operation knob 19e capable of switching between two positions and a switch element (not shown) for detecting the position where the operation knob 19e is switched. It may be configured.
In this case, the unloader F is erected or tilted to the side where the operation knob 19e is tilted, and when the operation knob 19e is returned to the neutral position, the unloader F is stopped from standing or activating.
Further, the present invention is not limited to this, and only when the operation knob 19e is operated to be pushed down, the operation knob 19e is automatically neutralized when the unloader F is actuated to the standing or lying down state and the pushing of the operation knob 19e is released. It may be configured to return to the position and to stop the operation of the unloader F from standing or lying down.
Other configurations may be the same as those in the above-described embodiment.

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

2 Driver's seat 14 Side panel 17 Operation box 17A Lever guide 18 Discharge operation tool 19 Elevation operation tool 19a, 19b Push operation part 20C Grain discharge port 30 Elbow part 30A Introduction cylinder part 31 Vertical cylinder part 36 Grain discharge port 40 Support body 60 Swing Drive A Self-propelled Aircraft B Operating Unit E Glen Tank F Unloader G Discharge Clutch X Swing Shaft Center

Claims (16)

A self-propelled aircraft is provided with a Glen tank for storing the grain and an unloader for discharging the grain in the Glen tank,
The unloader includes an introduction tube portion having a horizontal axis that extends in the extending direction of the grain discharge port of the Glen tank, and a straight tubular vertical tube portion that extends in a radial direction of the introduction tube portion. In the horizontal direction, a grain discharge port is formed at the conveyance end portion of the vertical cylinder portion, and the storage posture in which the conveyance termination portion is directed upward and the discharge posture in which the conveyance termination portion is directed outward are described in the horizontal direction. The posture can be freely switched around the axis of
A swing drive device for swinging the unloader up and down around the horizontal axis, and a discharge clutch for intermittently driving the unloader so as to discharge and stop discharging the grains in the grain tank. ,
A combine in which a raising / lowering operation tool for raising / lowering the swing drive device and a discharge operation tool for turning on / off the discharge clutch are disposed adjacent to each other in a driving section on the self-propelled aircraft.   The combine according to claim 1, wherein the hoisting operation tool and the discharge operation tool are provided on a rear side of the operation unit.   The combine according to claim 1 or 2, wherein the hoisting operation tool and the discharge operation tool are provided at a rear portion of a side panel provided in the operation unit.   The combine according to any one of claims 1 to 3, wherein the discharge operation tool is configured by a lever that is operated to swing.   The combine according to any one of claims 1 to 4, wherein the discharge operation tool is provided in an operation box provided on a side panel, and the undulation operation tool is attached to the operation box.   The combine according to claim 5, wherein the hoisting operation tool is provided at a location near the front of the operation box and near the driver's seat side that exists in the driving unit.   The combine according to any one of claims 1 to 6, wherein the hoisting operation tool is disposed on a lateral side of a lever guide of the discharge operation tool.   The raising and lowering operation tool is selected so that one of an operation position for performing an upright operation on the storage posture side of the unloader and an operation position for performing an overturning operation on the discharge posture side is selected. The combine according to any one of claims 1 to 7, further comprising an operation switch that outputs an operation command to the swing drive device.   The combine according to claim 8, wherein the hoisting operation tool includes two push operation portions configured to be able to swing a seesaw as the operation switch.   The combine according to claim 8, wherein the hoisting operation tool includes two button-type operation tools capable of operating either one as the operation switch.   The combine according to claim 8, wherein the hoisting operation tool includes, as the operation switch, an operation knob capable of switching between two positions and a switch element for detecting a position where the operation knob is switched.   The combine according to any one of claims 8 to 11, wherein the hoisting operation tool is set such that an operation position of the operation switch is an inner side and an outer side of the self-propelled aircraft.   The combine according to any one of claims 8 to 12, wherein the hoisting operation tool has an operation position of the operation switch set in a direction along a hoisting swinging direction of the unloader.   The operation position of the operation switch in the hoisting operation tool is such that the unloading operation of the unloader is commanded at the operation position on the outer side of the self-propelled aircraft, and the unloader is raised at the operation position on the inner side of the self-propelled aircraft. The combine according to any one of claims 8 to 13, wherein operation is commanded.   The combine according to any one of claims 8 to 11, wherein the hoisting operation tool is set such that the operation position of the operation switch is an upper position and a lower position.   The combine according to claim 15, wherein the operation position of the operation switch in the raising / lowering operation tool is such that an upright operation of the unloader is commanded at an upper position and a lowering operation of the unloader is commanded at a lower position.

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