JP6755900B2 - Harvest trampling prevention device and harvester using it - Google Patents

Description

The present invention relates to a harvester trampling prevention device in a harvester equipped with a harvester tank that rotates laterally to unload the harvester on a traveling machine, and a harvester using the same.

A crop harvester towed by a tractor or the like transports crops such as root vegetables excavated from a field to a storage tank by a conveyor mounted on the machine, stores them, and harvests them. The harvested agricultural products are unloaded by flipping the storage tank sideways at a predetermined collection point.
In this case, the crops discharged from the containment tank are piled up in a pile. The crops piled up in this mountain collapse to the side of the harvester. Then, if you drive after unloading, the wheels will trample the collapsed harvest. The trampling by the wheels is a major factor in reducing the yield of harvest.

As prior art documents relating to such a harvester, the applicant has grasped the following patent documents 1 and 2.

Utility Model Registration No. 3133198 JP-A-2009-284790

The above-mentioned Patent Document 1 relates to "a tire guard device and an agricultural crop harvester equipped with the tire guard device", and has the following description.
[0012]
As shown in FIG. 1, the crop harvester 10 of the first embodiment is a type of harvester towed by a tractor (not shown) via a hitch 11. The crop harvester 10 has a harvest tank 22 that is vertically rotatable for storing and discharging the crop, and a pair of tires 13 and 13. The tire guard device 1 of the first embodiment is attached to the crop harvester 10, and is mainly supported by the vertically parallel link mechanism 2 provided in the harvester main body 10 and the vertically parallel link mechanism 2. It has a tire guard 3, a hanging wire 4 for hanging the tire guard 3, and a pressing portion 5 for pushing down the hanging wire 4.
[0017]
In the above, in the first embodiment, as shown in FIGS. 1 to 3, when the harvest tank 22 is raised and rotated to the discharge position and no external force acts on the hanging wire 4, the tire guard 3 harvests. The length of the hanging wire 4 is set so as to be held at a height position (blocking position) where the rolling of an object can be prevented. On the other hand, as shown in FIGS. 4 and 5, when the harvest tank 22 is rotated downward to the storage position and the hanging wire 4 is pushed down by the pressing portion 5, the tire guard 3 may come into contact with the ground. The installation location of the pressing portion 5 is set so as to rise to a height position (standby position) that does not interfere with traveling.
[0024]
The feature of the second embodiment is that the tire guard 3 is moved up and down by using the actuator 6 without using the hanging wire 4 and the pressing portion 5 of the first embodiment. Specifically, as shown in FIG. 7, an actuator 6 for moving the tire guard 3 up and down and a control means 7 for controlling the actuator 6 are provided on the harvester main body 10.

The above-mentioned Patent Document 2 relates to "a device for preventing trampling of unloading crops in a root vegetable harvester", and has the following description.
[0017]
When the root vegetables have been piled up in the storage tank 5, the harvester 1 is pulled to the root vegetable accumulation place, and at this position, as shown in FIG. 4, the storage tank 5 is rotated upward with the upper end pivoting portion of the support column 6 as a fulcrum. When it is moved, as the pressing force of the accommodating tank 5 against the upper end engaging portion 31 of the lever lever 28 decreases, the frame body 15, the arm link 8 and the rod link 13 are connected by the slack of the support wire 20 and descend by their own weight. When the bottom surface of the storage tank 5 is separated from the engaging portion 31 at the upper end of the lever 28, the guard frame 16 of the frame body 15 descends to the lowest position near the ground surface, and the rod link 13 folded upward is lowered. By rotating downward to the stopper 14b, the frame body 15 is pushed out to the side of the machine body 4.
[0018]
As shown in FIG. 5, when the storage tank 5 is further rotated upward, the root vegetables are unloaded by inversion. At that time, the root vegetables 34 that collapse to the side of the machine body 4 are framed 15 It is dammed by the guard frame 16 of. Therefore, as shown in FIG. 6, by slightly changing the direction of the tire 33 of the machine body 4 and steering, the harvested root vegetables 34 can be advanced without trampling.
Of course, it is also possible to design the guard frame 16 to be pushed out to the outside of the tire 33, and in that case, trampling is avoided even if the tire 33 goes straight without changing the direction.
[0019]
When the root vegetable unloading is completed and the storage tank 5 is rotated to the normal position, the upper end engaging portion 31 of the lever lever 28 is pressed downward in the reverse order of the above, so that the frame body 15 is arm-linked. At the same time that the rod link 13 is lifted upward together with the 8 and the rod link 13, the rod link 13 is folded upward to the upper stopper 14a, so that the front portion of the frame body 15 is pulled inward inward of the machine body 4 and is compactly stored.

The device of Patent Document 1 is such that the tire guard 3 can move up and down as the harvest tank 22 rotates.
When the harvest tank 22 is rotated upward to the discharge position, the tire guard 3 is held at a height position (blocking position) that can prevent the harvest from rolling.
On the other hand, when the harvest tank 22 is rotated downward to the storage position, the tire guard 3 rises to a height position (standby position) that does not come into contact with the ground and does not interfere with traveling.

The device of Patent Document 2 is such that the guard frame 16 of the frame body 15 can move up and down as the storage tank 5 rotates.
When the storage tank 5 is rotated upward, the frame body 15 descends to the lowest position near the ground surface. In this state, the root vegetables are unloaded, and the root vegetables 34 that collapse to the side of the machine body 4 are blocked by the guard frame 16 of the frame body 15.
On the other hand, when the unloading of the root vegetables is completed and the storage tank 5 is rotated to the normal position, the frame body 15 is lifted upward.

However, all of the devices of Patent Documents 1 and 2 have only a function of raising and lowering the tire guard 3 or the guard frame 16 that guards the harvested product. In particular, the tire guard 3 or the guard frame 16 is always kept in the raised position during normal times other than unloading.

Although the tire guard 3 and the guard frame 16 can prevent the crop from collapsing or rolling in the lowered position at the time of unloading, they hinder the maintenance of the vehicle body in the raised position in the normal state.
Specifically, the airframe needs to perform maintenance such as adjusting the tension of the chain and grease-up. During the work, the worker needs to bring his / her body close to the maintenance point.
However, the devices of Patent Documents 1 and 2 have a problem that the tire guard 3 and the guard frame 16 interfere with the maintenance work. Therefore, in the devices of Patent Documents 1 and 2, it is necessary to take measures such as removing the tire guard 3 and the guard frame 16 when performing maintenance on the airframe.

An object of the present invention is to provide a harvested product trampling prevention device that solves the above problems and a harvester using the same.
That is, the present invention provides a harvested product trampling prevention device capable of easily performing maintenance work on the traveling machine, and a harvester using the device.

The crop trampling prevention device according to claim 1 has adopted the following configuration in order to achieve the above object.
A device for preventing the traveling machine from stepping on the unloaded harvest in a harvesting machine equipped with a harvesting tank that rotates sideways to unload the harvested material. There,
It is equipped with a stepping prevention frame arranged on the unloading side of the traveling machine body and an elevating mechanism for raising and lowering the stepping prevention frame.
The stepping prevention frame regulates the elevating frame that is elevated and lowered by the elevating mechanism, the guard frame that is rotatably attached to the elevating frame, and the rotation of the guard frame at the guard position and the open position, respectively. It is configured to include a rotation control mechanism.
The rotation regulating mechanism includes a guard position regulating means for restricting the rotation of the guard frame at a guard position and an open position regulating means for restricting the rotation of the guard frame at an open position.
The open position regulating means has a lock plate pivotally supported by a shaft support for temporarily locking the guard frame in the open position.
The above lock plate
A hook portion provided on the upper side of the shaft support portion and for hooking the lock pipe provided on the guard frame when the guard frame is rotated upward to the open position .
A fan shape provided on the lower side of the shaft support portion and whose weight balance is adjusted so that the lock plate is rotated in the direction in which the hook portion is hooked on the lock pipe while the hook portion is hooked on the lock pipe. by have a balance adjustment unit, rotating the guard frame when from the open position back into the guard position, while being rotated with the guard frame a little upwards, the lock plate opposite to the locking direction It is configured so that the hook portion can be removed from the lock pipe .

The harvester according to claim 2 has adopted the following configuration in order to achieve the above object.
A harvester trampling prevention device for preventing the traveling aircraft from stepping on the unloaded harvest by providing a harvesting tank that rotates sideways to unload the harvested material on the traveling aircraft. It is a harvester equipped with
The above-mentioned harvest trampling prevention device is
It is equipped with a stepping prevention frame arranged on the unloading side of the traveling machine body and an elevating mechanism for raising and lowering the stepping prevention frame.
The stepping prevention frame includes an elevating frame that is elevated by the elevating mechanism, a guard frame that is rotatably attached to the elevating frame, and a rotation that regulates the rotation of the guard frame at a guard position and an open position. Consists of including a dynamic regulation mechanism,
The rotation regulating mechanism includes a guard position regulating means for restricting the rotation of the guard frame at a guard position and an open position regulating means for restricting the rotation of the guard frame at an open position.
The open position regulating means has a lock plate pivotally supported by a shaft support for temporarily locking the guard frame in the open position.
The above lock plate
A hook portion provided on the upper side of the shaft support portion and for hooking the lock pipe provided on the guard frame when the guard frame is rotated upward to the open position .
A fan shape provided on the lower side of the shaft support portion and whose weight balance is adjusted so that the lock plate is rotated in the direction in which the hook portion is hooked on the lock pipe while the hook portion is hooked on the lock pipe. by have a balance adjustment unit, rotating the guard frame when from the open position back into the guard position, while being rotated with the guard frame a little upwards, the lock plate opposite to the locking direction It is configured so that the hook portion can be removed from the lock pipe .

The harvested product trampling prevention device according to claim 1 includes a stepping prevention frame and an elevating mechanism. The stepping prevention frame is arranged on the unloading side of the traveling machine body. The elevating mechanism raises and lowers the stepping prevention frame.
The stepping prevention frame includes an elevating frame, a guard frame, and a rotation restricting mechanism. The elevating frame is elevated by the elevating mechanism. The guard frame is rotatably attached to the elevating frame. The rotation regulation mechanism regulates the rotation of the guard frame at the guard position and the open position, respectively.
Therefore, when the traveling machine body is maintained, the guard frame is rotated from the guard position to the open position, and the rotation of the guard frame is restricted at the open position. On the other hand, when the maintenance is completed, the guard frame is rotated from the open position to the guard position, and the rotation of the guard frame is restricted at the guard position. With such a configuration, maintenance work of the traveling machine body can be easily performed.
Further, the rotation regulating mechanism includes a guard position regulating means for restricting the rotation of the guard frame at a guard position. Therefore, when the maintenance of the traveling machine is not performed, the guard frame is regulated at the guard position by the guard position regulating means. The rotation restricting mechanism includes an open position regulating means for restricting the rotation of the guard frame at the open position. Therefore, when the traveling machine is maintained, the guard frame is regulated at the open position by the open position regulating means. The open position regulating means temporarily locks the guard frame at the open position by a lock plate pivotally supported by the shaft support . Therefore, it is possible to prevent the guard frame regulated to the open position from returning toward the guard position during the maintenance work. Prevent the guard frame from getting in the way of maintenance work.
Further, the lock plate has a hook portion and a balance adjusting portion. The hook portion is provided on the upper side of the shaft support portion, and when the guard frame is rotated upward to the open position, the lock pipe provided on the guard frame is hooked. The balance adjusting portion is fan-shaped, and the weight balance is adjusted so that the lock plate is rotated in the direction in which the hook portion is hooked on the lock pipe while the hook portion is hooked on the lock pipe. As a result, when the guard frame is returned from the open position to the guard position, the lock plate is rotated in the direction opposite to the locking direction while the guard frame is rotated slightly upward, and the hook portion is connected to the lock pipe. Can be removed. Therefore, when the guard frame is turned sideways, the lock pipe of the guard frame is hooked on the hook portion of the lock plate. In this state, the weight of the balance adjusting portion urges the lock plate itself in the direction in which the hook portion is hooked on the lock pipe. As a result, the locked state is maintained, and the guard frame is regulated to maintain the open position. Therefore, by setting the guard frame in the open position, maintenance work on the lower side of the traveling machine body is facilitated.

The harvester according to claim 2 includes a stepping prevention frame and an elevating mechanism. The stepping prevention frame is arranged on the unloading side of the traveling machine body. The elevating mechanism raises and lowers the stepping prevention frame.
The stepping prevention frame includes an elevating frame, a guard frame, and a rotation restricting mechanism. The elevating frame is elevated by the elevating mechanism. The guard frame is rotatably attached to the elevating frame. The rotation regulation mechanism regulates the rotation of the guard frame at the guard position and the open position, respectively.
Therefore, when the traveling machine body is maintained, the guard frame is rotated from the guard position to the open position, and the rotation of the guard frame is restricted at the open position. On the other hand, when the maintenance is completed, the guard frame is rotated from the open position to the guard position, and the rotation of the guard frame is restricted at the guard position. With such a configuration, maintenance work of the traveling machine body can be easily performed.
Further, the rotation regulating mechanism includes a guard position regulating means for restricting the rotation of the guard frame at a guard position. Therefore, when the maintenance of the traveling machine is not performed, the guard frame is regulated at the guard position by the guard position regulating means. The rotation restricting mechanism includes an open position regulating means for restricting the rotation of the guard frame at the open position. Therefore, when the traveling machine is maintained, the guard frame is regulated at the open position by the open position regulating means. The open position regulating means temporarily locks the guard frame at the open position by a lock plate pivotally supported by the shaft support . Therefore, it is possible to prevent the guard frame regulated to the open position from returning toward the guard position during the maintenance work. Prevent the guard frame from getting in the way of maintenance work.
Further, the lock plate has a hook portion and a balance adjusting portion. The hook portion is provided on the upper side of the shaft support portion, and when the guard frame is rotated upward to the open position, the lock pipe provided on the guard frame is hooked. The balance adjusting portion is fan-shaped, and the weight balance is adjusted so that the lock plate is rotated in the direction in which the hook portion is hooked on the lock pipe while the hook portion is hooked on the lock pipe. As a result, when returning the guard frame from the open position to the guard position, the lock plate is rotated in the direction opposite to the locking direction while the guard frame is rotated slightly upward, and the hook portion is connected to the lock pipe. Can be removed. Therefore, when the guard frame is turned sideways, the lock pipe of the guard frame is hooked on the hook portion of the lock plate. In this state, the weight of the balance adjusting portion urges the lock plate itself in the direction in which the hook portion is hooked on the lock pipe. As a result, the locked state is maintained, and the guard frame is regulated to maintain the open position. Therefore, by setting the guard frame in the open position, maintenance work on the lower side of the traveling machine body is facilitated.

It is a perspective view which shows one Embodiment of the harvester of this invention. It is a perspective view which shows the said harvester. It is a perspective view which shows one Embodiment of the harvested trampling prevention device of this invention. It is an exploded perspective view which shows the said harvested trampling prevention device. It is a figure explaining the function of the said harvested trampling prevention device. It is a figure explaining the function of the said harvested trampling prevention device.

1 to 6 are views for explaining an embodiment of the present invention.

◆ Harvester 100
1 and 2 are perspective views showing the harvester 101 of the present embodiment. The present embodiment is an example in which the present invention is applied to a beet harvester for harvesting beets, which is a kind of root vegetable.

The harvester 100 has a hitch 102 connected to a tractor protruding in front of the traveling machine 103, and is towed by a tractor (not shown) to travel.

The traveling machine 101 is equipped with a harvest tank 2 that rotates sideways and reverses in order to unload the harvest.

At the lower part of the traveling machine 101, an intake (hidden and invisible in the figure) for taking in the agricultural products planted in the ridges is provided. By running the above intake according to the crop line, the crops are taken in and harvested while being dug up. The harvested agricultural products are loaded into the harvest tank 2 via a conveyor belt below the traveling machine 101 (hidden and invisible in the figure) and a rotating conveyor 103 behind the traveling machine 101.

A pair of front and rear columns 3 are provided on one side of the traveling machine 101 in the traveling direction (direction of arrow F). The upper part of the harvest tank 2 is supported by being pivotally attached to the upper part of the pair of columns 3 so as to be vertically rotatable. The harvest tank 2 is rotated in the direction of arrow R by a driving means such as a hydraulic cylinder (not shown), flips to the side of the traveling machine 101, and unloads the agricultural products loaded in the harvest tank 2. ing.

The harvester 100 further includes a harvester stepping prevention device 1 for preventing the traveling machine 101 from stepping on the unloaded harvest.

◆ Harvest trampling prevention device 1
3 and 4 are views showing the harvested product trampling prevention device 1 of the present embodiment.
The harvested product trampling prevention device 1 prevents the traveling machine 101 from stepping on the unloaded harvested product.

〔Overview〕
The harvested product trampling prevention device 1 includes a stepping prevention frame 10 and an elevating mechanism 30.
The stepping prevention frame 10 is arranged on the unloading side of the traveling machine body 101. The elevating mechanism 30 elevates and elevates the stepping prevention frame 10.

The stepping prevention frame 10 includes an elevating frame 11 and a guard frame 21. The guard frame 21 is attached to the elevating frame 11. The elevating frame 11 is elevated by the elevating mechanism 30, and the guard frame 21 is elevated.

The elevating mechanism 30 moves the stepping prevention frame 10 up and down in conjunction with the operation of the harvest tank 2 rotating and reversing. That is, when the harvest tank 2 rotates for unloading, the elevating mechanism 30 lowers the stepping prevention frame 10 to the side of the traveling machine body 101 to near the ground surface. As a result, the harvested material that is unloaded in the mountains and collapses is blocked, and the tire 104 of the traveling machine 101 is prevented from trampling the harvested material.
The lifting mechanism 30 raises the stepping prevention frame 10 to its original position in conjunction with the operation of the harvest tank 2 rotating and returning after the unloading is completed.

[Elevating mechanism 30]
The elevating mechanism 30 includes a lever 31, an arm link 41, and a rod link 51.

The lever 31 raises and lowers the elevating frame 11 in conjunction with the operation of rotating and reversing the harvest tank 2.
The arm link 41 supports the rear end portion of the elevating frame 11 so as to be able to swing up and down and swing left and right.
The rod link 51 swings its front end portion left and right when the elevating frame 11 moves up and down.

[Lever lever 31]
The lever lever 31 is formed in a substantially L shape having a refracting portion 31A. The lever 31 is arranged in a direction crossing the traveling machine body 101, and the refracting portion 31A is pivotally supported by the shaft support unit 32. As a result, the lever lever 31 can rotate up and down about the refracting portion 31A. The rotation of the lever lever 31 causes the wire hook 33 at the tip and the pressing roller 34 attached to the rear end to swing up and down.

The upper end of the connecting wire 35 is connected to the wire hook 33. The lower end of the connecting wire 35 is connected to a wire hook 12 provided at the upper center of the elevating frame 11.

The pressing roller 34 attached to the rear end of the lever 31 comes into contact with the bottom of the harvest tank 2.

Therefore, when the harvest tank 2 is rotated for unloading, the bottom of the harvest tank 2 is lifted, and the pressing roller 34 is lifted accordingly. As a result, the lever lever 31 rotates, and the wire hook 33 at the tip is lowered. As a result, the elevating frame 11 connected to the wire hook 33 by the connecting wire 35 is lowered.

On the contrary, when the harvest tank 2 rotates to the normal position, the bottom of the harvest tank 2 is lowered, and the pressing roller 34 is pushed down accordingly. As a result, the lever lever 31 rotates, and the wire hook 33 at the tip is raised. As a result, the elevating frame 11 connected to the wire hook 33 by the connecting wire 35 rises.

[Arm Link 41]
The horizontal shaft 42 at the rear end of the arm link 41 is pivotally supported by the bearing unit 44. The bearing unit 44 is fixed to the rear frame 105 of the traveling machine body 101. As a result, the tip side of the arm link 41 can swing up and down with the horizontal axis 42 as the axis.

A universal joint unit 43 is provided at the tip of the arm link 41. The tip of the arm link 41 and the rear support 13 provided at the rear end of the elevating frame 11 are connected via the universal joint unit 43.

When the elevating frame 11 moves up and down due to the swing of the lever lever 31, the tip of the arm link 41 moves up and down. As a result, the trajectory of the elevating frame 11 becomes stable when it moves up and down.

Further, when the front end portion of the elevating frame 11 swings left and right when the elevating frame 11 moves up and down due to the operation of the rod link 51 described later, the universal joint unit 43 connected to the rear support 13 at the rear end portion is released. It operates and the front end portion of the elevating frame 11 swings left and right.

[Rod Link 51]
The rear end of the rod link 51 is pivotally supported by the lower end of the support frame 52. The support frame 52 is fixed to the front frame 106 of the traveling machine body 101. Further, on the lower end side of the support frame 52, an upper regulation member 53A and a lower regulation member 53B that restrict the rod link 51 from swinging up and down at predetermined upper and lower limit positions are fixed. ..

As a result, the rod link 51 rotates about the rear end portion, and the tip end side thereof swings. The rotatable range of the rod link 51 is between the upper regulating member 53A and the lower regulating member 53B. Further, in the rotatable range, the rod link 51 is arranged so that the tip side faces diagonally upward. Therefore, when the rod link 51 rotates, the tip portion of the rod link 51 swings so as to approach or move away from the traveling machine body 101.
In this state, the tip of the rod link 51 is pivotally supported by the front support 14 provided at the front end of the elevating frame 11.

Therefore, when the elevating frame 11 moves up and down due to the swing of the lever lever 31, the rod link 51 rotates, and the front support 14 provided at the front end of the elevating frame 11 approaches the traveling machine body 101. Swing to move back and forth. That is, when the elevating frame 11 rises, the front support 14 approaches the traveling machine 101, and when the elevating frame 11 descends, the front support 14 moves away from the traveling machine 101.

[Treading prevention frame 10]
The stepping prevention frame 10 is raised and lowered by the raising and lowering mechanism 30 described above.

The stepping prevention frame 10 includes an elevating frame 11, a guard frame 21, and a rotation restricting mechanism.

The elevating frame 11 is elevated by the elevating mechanism 30.
The guard frame 21 is rotatably attached to the elevating frame 11.
The rotation regulating mechanism regulates the rotation of the guard frame 21 at the guard position and the open position, respectively.

[Elevating frame 11]
The elevating frame 11 is provided with a rear support 13 at the rear end of the frame body 15 extending along the side surface of the traveling machine body 101, and a front support 14 at the front end. A wire hook 12 is provided at the upper center of the frame body 15.

The wire hook 12 is connected to the wire hook 33 of the lever 31 via the connecting wire 35.
The rear support 13 is connected to the tip of the arm link 41 via the universal joint unit 43 at a portion of the traveling machine body 101 near the vehicle body.
The front support 14 is connected to the tip of the rod link 51 at a portion of the traveling machine 101 near the vehicle body.

The guard frame 21 is rotatably attached to the rear support 13 and the front support 14.

The rear support 13 has a roughly flat box shape, and is arranged so that the closest facing surfaces face the front and rear of the traveling machine body 101. A joint connecting portion 13A to which the universal joint unit 43 is connected is provided in a portion of the rear support 13 near the traveling machine body 101.

A rear protruding shaft 13B for axially supporting the guard frame 21 is provided on the front surface of the rear support 13.
A guard position regulating means 13C, which will be described later, is provided below the protruding shaft 13B.

The front support 14 has a roughly flat box shape, and is arranged so that the closest facing surfaces face the front and rear of the traveling machine body 101. The front support 14 is a rectangular parallelepiped smaller than the rear support 13 described above.

A front protruding shaft 14B for axially supporting the guard frame 21 is provided on the front surface of the front support 14.
A lock mechanism 16 described later is provided near the vehicle body of the protruding shaft 14B.

[Guard frame 21]
The guard frame 21 includes a rear bracket 25, a front bracket 26, a plurality of guard pipes 23, and a frame pipe 24.

In the rear bracket 25, a portion near the root is pivotally supported by the rear protruding shaft 13B, and the arm portion 25A rotates.
In the front bracket 26, a portion near the root is pivotally supported by the front protruding shaft 14B, and the arm portion 26A rotates.

The plurality of guard pipes 23 are arranged side by side in parallel from the rear portion of the rear bracket 25 to the front portion of the front bracket 26. In this example, six guard pipes 23 are arranged side by side on the arm portions 25A and 26A.
Further, an L-shaped frame pipe 24 is arranged outside the six guard pipes 23.

Further, the one arranged at the root side of the above six guard pipes 23 functions as a lock pipe 23A locked by a lock mechanism 16 described later.

[Rotation regulation mechanism]
As described above, the rotation regulating mechanism regulates the rotation of the guard frame 21 at the guard position and the open position, respectively.
FIG. 1 shows a state in which the rotation of the guard frame 21 is restricted at the open position.
FIG. 2 shows a state in which the rotation of the guard frame 21 is restricted at the guard position.

That is, the guard position is a position where the guard frame 21 is oriented vertically. With the guard frame 21 maintaining the guard position, as described above, the elevating mechanism 30 raises and lowers the stepping prevention frame 10 in conjunction with the reversing operation of the harvest tank 2.
Further, the open position is a position where the guard frame 21 is turned sideways. By setting the guard frame 21 in the open position with the stepping prevention frame 10 raised, maintenance work on the lower side of the traveling machine body 101 is facilitated.

FIG. 5 shows a state in which the rotation of the guard frame 21 is restricted at the guard position.
FIG. 6 shows a state in which the rotation of the guard frame 21 is restricted at the open position.

The rotation regulating mechanism includes a guard position regulating means 13C. The guard position regulating means 13C regulates the rotation of the guard frame 21 when it reaches the guard position. Specifically, the guard position regulating means 13C is a square pipe provided on the front surface of the rear support 13 so as to project below the rear protruding shaft 13B.

The rotation regulation mechanism includes a lock mechanism 16. The lock mechanism 16 is provided on the front surface of the front support 14 near the vehicle body of the front protruding shaft 14B. The lock mechanism 16 temporarily locks the guard frame 21 at the open position, and functions as an open position regulating means for restricting the rotation of the guard frame 21 when the guard frame 21 reaches the open position.

The lock mechanism 16 includes a lock plate 16A pivotally supported on the front surface of the front support 14.

The lock plate 16A is provided with a hook portion 17 for hooking the lock pipe 23A on the upper side of the shaft support portion 16B. The hook portion 17 has a U-shaped curved portion that hangs on the outer circumference of the lock pipe 23A.
The lock plate 16A is provided with a fan-shaped balance adjusting portion 18 on the lower side of the shaft support portion 16B. The balance adjusting portion 18 balances the weight so that the lock plate 16A itself is rotated in the direction in which the hook portion 17 is hooked on the lock pipe 23A while the hook portion 17 is hooked on the outer circumference of the lock pipe 23A. Is the adjusted shape. That is, the fan shape of the balance adjusting portion 18 is arranged biased toward the lock pipe 23A with respect to the shaft support portion 16B in a state where the hook portion 17 is hooked on the lock pipe 23A.

〔motion〕
The harvested product trampling prevention device 1 interlocks with the operation of rotating and reversing the harvested product tank 2, and the lifting mechanism 30 raises and lowers the stepping prevention frame 10. That is, when the harvest tank 2 rotates for unloading, the elevating mechanism 30 lowers the stepping prevention frame 10 to near the ground surface. As a result, the harvested material that is unloaded in the mountains and collapses is blocked, and the tire 104 of the traveling machine 101 is prevented from trampling the harvested material. The lifting mechanism 30 raises the stepping prevention frame 10 to its original position in conjunction with the operation of the harvest tank 2 rotating and returning after the unloading is completed.

The stepping prevention frame 10 is raised and lowered with the guard frame 21 restricted to the guard position.

When maintaining the lower part of the traveling machine body 101, the guard frame 21 is rotated from the guard position to the open position at the position where the stepping prevention frame 10 is raised.
That is, for example, the frame pipe 24 of the guard frame 21 is grasped by hand and lifted in the direction of arrow A from the vertical direction. Then, the rear bracket 25 and the front bracket 26 rotate upward with the rear protruding shaft 13B and the front protruding shaft 14B as axes, respectively.

When the guard frame 21 is turned sideways, the lock pipe 23A of the guard frame 21 is hooked on the hook portion 17 of the lock plate 16A. In this state, the weight of the balance adjusting portion 18 urges the lock plate 16A itself in the direction in which the hook portion 17 is hooked on the lock pipe 23A. As a result, the locked state is maintained, and the guard frame 21 is regulated to maintain the open position. By setting the guard frame 21 in the open position with the stepping prevention frame 10 raised in this way, the maintenance work on the lower side of the traveling machine body 101 is facilitated.

When returning the guard frame 21 from the open position to the guard position, the lock plate 16A is rotated in the opposite direction to the locking direction while the guard frame 21 is rotated slightly upward, and the hook portion is connected to the lock pipe 23A. Remove 17 As a result, the lock is released, so that the guard frame 21 is returned to the original guard position. The guard frame 21 is regulated to the guard position by coming into contact with the guard position regulating means 13C.

[Effect of Embodiment]
The harvested product trampling prevention device and the harvester of the present embodiment have the following effects.

The present embodiment includes a stepping prevention frame 10 and an elevating mechanism 30. The stepping prevention frame 10 is arranged on the unloading side of the traveling machine body 101. The elevating mechanism 30 raises and lowers the stepping prevention frame 10.
The stepping prevention frame 10 includes an elevating frame 11, a guard frame 21, and a rotation restricting mechanism. The elevating frame 11 is elevated by the elevating mechanism 30. The guard frame 21 is rotatably attached to the elevating frame 11. The rotation regulating mechanism regulates the rotation of the guard frame 21 at the guard position and the open position, respectively.
Therefore, when the traveling machine body 101 is maintained, the guard frame 21 is rotated from the guard position to the open position, and the rotation of the guard frame 21 is restricted at the open position. On the other hand, when the maintenance is completed, the guard frame 21 is rotated from the open position to the guard position, and the rotation of the guard frame 21 is restricted at the guard position. With such a configuration, maintenance work of the traveling machine body 101 can be easily performed.

In the present embodiment, the rotation regulating mechanism restricts the rotation of the guard frame 21 by the guard position regulating means 13C when the guard frame 21 is in the guard position. When the maintenance of the traveling machine body 101 is not performed, the guard frame 21 is regulated at the guard position by the guard position regulating means 13C.

In the present embodiment, the rotation regulating mechanism restricts the rotation of the guard frame 21 when the guard frame 21 is in the open position. When the traveling machine body 101 is maintained, the guard frame 21 is regulated at the open position by the open position regulating means.

In the present embodiment, the open position regulating means temporarily locks the guard frame 21 at the open position by the lock mechanism 16. Therefore, it is possible to prevent the guard frame 21 restricted to the open position from returning toward the guard position during the maintenance work. Prevents the guard frame 21 from interfering with maintenance work.

[Modification example]
Although the particularly preferable embodiment of the present invention has been described above, the present invention is not limited to the illustrated embodiment and can be modified into various embodiments, and the present invention includes various modified examples. The purpose is to do.

1: Harvest anti-stepping device 2: Harvest tank 3: Prop 10: Anti-stepping frame 11: Elevating frame 12: Wire hook 13: Rear support 13A: Joint connecting portion 13B: Rear protruding shaft 13C: Guard position regulation Means 14: Front support 14B: Front protruding shaft 15: Frame body 16: Lock mechanism 16A: Lock plate 16B: Shaft support 17: Hook part 18: Balance adjustment part 21: Guard frame 23: Guard pipe 23A: Lock pipe 24: Frame pipe 25: Rear bracket 25A: Arm part 26: Front bracket 26A: Arm part 30: Elevating mechanism 31: Joint lever 31A: Bending part 32: Shaft support unit 33: Wire hook 34: Pushing roller 35: Connecting wire 41: Arm link 42: Horizontal axis 43: Universal joint unit 44: Bearing unit 51: Rod link 52: Support frame 53A: Upper regulation member 53B: Lower regulation member 100: Harvester 101: Traveling machine 102: Hitch 103: Rotating conveyor 104: Tire 105: Rear frame 106: Front frame

Claims (2)

A device for preventing the traveling machine from stepping on the unloaded harvest in a harvesting machine equipped with a harvesting tank that rotates sideways to unload the harvested material. There,
It is equipped with a stepping prevention frame arranged on the unloading side of the traveling machine body and an elevating mechanism for raising and lowering the stepping prevention frame.
The stepping prevention frame regulates the elevating frame that is elevated and lowered by the elevating mechanism, the guard frame that is rotatably attached to the elevating frame, and the rotation of the guard frame at the guard position and the open position, respectively. It is configured to include a rotation control mechanism.
The rotation regulating mechanism includes a guard position regulating means for restricting the rotation of the guard frame at a guard position and an open position regulating means for restricting the rotation of the guard frame at an open position.
The open position regulating means has a lock plate pivotally supported by a shaft support for temporarily locking the guard frame in the open position.
The above lock plate
A hook portion provided on the upper side of the shaft support portion and for hooking the lock pipe provided on the guard frame when the guard frame is rotated upward to the open position .
A fan shape provided on the lower side of the shaft support portion and whose weight balance is adjusted so that the lock plate is rotated in the direction in which the hook portion is hooked on the lock pipe while the hook portion is hooked on the lock pipe. by have a balance adjustment unit, rotating the guard frame when from the open position back into the guard position, while being rotated with the guard frame a little upwards, the lock plate opposite to the locking direction A harvested trampling prevention device characterized in that the hook portion can be removed from the lock pipe by allowing the hook portion to be removed . A harvester trampling prevention device for preventing the traveling aircraft from stepping on the unloaded harvest by providing a harvesting tank that rotates sideways to unload the harvested material on the traveling aircraft. It is a harvester equipped with
The above-mentioned harvest trampling prevention device is
It is equipped with a stepping prevention frame arranged on the unloading side of the traveling machine body and an elevating mechanism for raising and lowering the stepping prevention frame.
The stepping prevention frame includes an elevating frame that is elevated by the elevating mechanism, a guard frame that is rotatably attached to the elevating frame, and a rotation that regulates the rotation of the guard frame at a guard position and an open position. Consists of including a dynamic regulation mechanism,
The rotation regulating mechanism includes a guard position regulating means for restricting the rotation of the guard frame at a guard position and an open position regulating means for restricting the rotation of the guard frame at an open position.
The open position regulating means has a lock plate pivotally supported by a shaft support for temporarily locking the guard frame in the open position.
The above lock plate
A hook portion provided on the upper side of the shaft support portion and for hooking the lock pipe provided on the guard frame when the guard frame is rotated upward to the open position .
A fan shape provided on the lower side of the shaft support portion and whose weight balance is adjusted so that the lock plate is rotated in the direction in which the hook portion is hooked on the lock pipe while the hook portion is hooked on the lock pipe. by have a balance adjustment unit, rotating the guard frame when from the open position back into the guard position, while being rotated with the guard frame a little upwards, the lock plate opposite to the locking direction A harvester characterized in that it is configured so that the hook portion can be removed from the lock pipe .

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