JP2019201580A - Crop trampling prevention device and harvester using the same - Google Patents

Abstract

To provide a crop trampling prevention device that allows maintenance work of a traveling machine body to be easily performed.SOLUTION: A crop trampling prevention device comprises a trampling prevention frame 10 arranged on an unloading side of a traveling machine body 101, and a lifting/lowering mechanism 30 for lifting/lowering the trampling prevention frame 10. The trampling prevention frame 10 is constituted so as to include a lifting/lowering frame 11 to be lifted/lowered by the lifting/lowering mechanism 30, a guard frame 21 rotatably attached to the lifting/lowering frame 11, and a rotation restriction mechanism for restricting rotation of the guard frame 21 at a guard position and an open position respectively. Before maintenance of the traveling machine body 101 is performed, the guard frame 21 is rotated from the guard position to the open position. After the maintenance is completed, the guard frame 21 is rotated from the open position to the guard position.SELECTED DRAWING: Figure 1

Description

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

A crop harvester towed by a tractor or the like transports and harvests crops such as root vegetables dug from a field to a storage tank by a conveyor mounted on the body. The harvested crops are unloaded by inverting the storage tank to the side at a predetermined collection location.
In this case, the crops discharged from the storage tanks are piled up in a mountain. This pile of farm products collapses to the body side of the harvester. Then, if you run after unloading, the wheels will crush the crop that has collapsed. The crushing by the wheels is a major factor that reduces the yield of harvest.

  As prior art documents regarding such a harvesting machine, the present applicant has grasped Patent Documents 1 and 2 below.

Utility Model Registration No. 3133198 JP 2009-284790 A

The above-mentioned patent document 1 relates to “a tire guard device and a crop harvester equipped with the same”, and includes the following description.
[0012]
As shown in FIG. 1, the crop harvesting machine 10 of the first embodiment is a type of harvesting machine that is pulled by a tractor (not shown) through a hitch 11. The crop harvesting machine 10 includes a crop tank 22 that is rotatable in the vertical direction and a pair of tires 13 and 13 for storing and discharging the crop. The tire guard device 1 according to the first embodiment is attached to the crop harvester 10 and is mainly supported by the vertical parallel link mechanism 2 provided in the harvester main body 10 and the vertical parallel link mechanism 2. A tire guard 3, a suspension wire 4 for suspending the tire guard 3, and a pressing portion 5 for pushing down the suspension wire 4.
[0017]
As described above, in the first embodiment, as shown in FIGS. 1 to 3, when the harvest tank 22 is turned up to the discharge position and no external force is applied to the suspension wire 4, the tire guard 3 is harvested. The length of the suspension wire 4 is set so as to be held at a height position (blocking position) that can prevent the rolling of the object. On the other hand, as shown in FIGS. 4 and 5, when the harvest tank 22 is turned down to the storage position and the suspension 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 unit 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 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 in the harvester main body 10.

The above-mentioned Patent Document 2 relates to “a device for preventing unloading of unloading crops in a root crop harvesting machine”, and has the following description.
[0017]
When the root vegetables are stacked 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 pivot part of the support column 6 as a fulcrum. When it is moved, as the pressing force of the storage tank 5 against the upper end engaging portion 31 of the lever lever 28 becomes smaller, the frame body 15, the arm link 8 and the rod link 13 are lowered by their own weight with the slack of the support wire 20, When the bottom surface of the storage tank 5 is separated from the engaging portion 31 at the upper end of the lever lever 28, the guard frame 16 of the frame 15 is lowered to the lowest position near the ground surface, and the rod link 13 folded upward is lower. The frame 15 is pushed out to the side of the machine body 4 by rotating downward to the stopper 14b.
[0018]
As shown in FIG. 5, when the storage tank 5 is further rotated upward, the root vegetables are unloaded by reversal. At this time, the root vegetables 34 that collapse to the side of the machine body 4 are removed from the frame 15. The guard frame 16 is dammed up. Therefore, as shown in FIG. 6, the steering can be performed without stepping on the harvested root vegetables 34 by slightly changing the direction of the tire 33 of the body 4 and steering.
Of course, it is also possible to design the guard frame 16 so as to push it out to the outside of the tire 33. In this case, even if the tire 33 goes straight without changing the direction of the tire 33, the stepping is avoided.
[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 to the above, whereby the frame 15 is arm-linked. Since the rod link 13 is folded upward to the upper stopper 14a at the same time as being lifted upward together with the rod 8 and the rod link 13, the front portion of the frame body 15 is drawn inwardly below the body 4 and stored compactly.

The device disclosed in Patent Document 1 is configured such that the tire guard 3 can be moved up and down as the harvest tank 22 rotates.
When the crop tank 22 is turned up to the discharge position, the tire guard 3 is held at a height position (blocking position) where the crop can be prevented from rolling.
On the other hand, when the harvest tank 22 is lowered and rotated to the storage position, the tire guard 3 rises to a height position (standby position) that does not cause contact with the ground and does not interfere with traveling.

The device of Patent Document 2 is configured so that the guard frame 16 of the frame body 15 can be moved up and down as the storage tank 5 rotates.
When the storage tank 5 is rotated upward, the frame 15 descends to the lowest position near the ground surface. In this state, unloading of the root vegetables is performed, and the root vegetables 34 that collapse to the side of the body 4 are dammed to the guard frame 16 of the frame 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, both of the devices disclosed in Patent Documents 1 and 2 only have a function of moving up and down the tire guard 3 or the guard frame 16 that guards the harvest. In particular, the tire guard 3 or the guard frame 16 is always kept in the raised position during normal times other than when unloading.

Although the tire guard 3 and the guard frame 16 can prevent the crop from collapsing and rolling when the tire guard 3 and the guard frame 16 are lowered when unloading, maintenance of the vehicle body is hindered when the tire guard 3 and the guard frame 16 are normally raised.
More specifically, the airframe needs to perform maintenance such as adjustment of chain tension and grease up. During the work, the worker needs to bring his body close to the maintenance site.
However, the devices of Patent Documents 1 and 2 have a problem that the maintenance work is difficult to perform because the tire guard 3 and the guard frame 16 are in the way. For this reason, in the devices disclosed in 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 of the airframe.

An object of the present invention is to provide a crop tread prevention device that solves the above-described problems and a harvester using the same.
That is, a crop tread prevention device that can easily perform maintenance work of a traveling machine body and a harvester using the same are provided.

In order to achieve the above object, the crop tread prevention device of claim 1 employs the following configuration.
A device for preventing the traveling machine from stepping on the unloaded harvested product in a harvesting machine equipped with a harvested tank that rotates to the side to unload the harvested product. There,
A stepping prevention frame disposed on the unloading side of the traveling machine body, and a lifting mechanism for raising and lowering the stepping prevention frame,
The stepping prevention frame restricts the lifting frame that is lifted and lowered by the lifting mechanism, the guard frame that is pivotably attached to the lifting frame, and the guard frame and the opening position, respectively. And a rotation restricting mechanism.

The crop tread prevention device of claim 2 employs the following configuration in addition to the configuration of claim 1 described above.
The rotation restricting mechanism includes guard position restricting means for restricting the rotation of the guard frame when it reaches the guard position.

The crop tread prevention device according to claim 3 employs the following configuration in addition to the configuration according to claim 1 or 2.
The rotation restricting mechanism includes an open position restricting means for restricting the rotation of the guard frame when the guard frame is in the open position.

In addition to the structure of the said Claim 3, the following structure was employ | adopted for the crop tread prevention apparatus of Claim 4.
The open position restricting means has a lock mechanism for temporarily locking the guard frame at the open position.

The harvesting machine of claim 5 employs the following configuration in order to achieve the above object.
A crop tank prevention device for preventing the traveling vehicle body from stepping on the unloaded harvested product, which is provided with a harvested tank that rotates to the side in order to unload the harvested material. A harvesting machine further comprising
The crop tread prevention device is
A stepping prevention frame disposed on the unloading side of the traveling machine body, and a lifting mechanism for raising and lowering the stepping prevention frame,
The stepping prevention frame includes an elevating frame that is raised and lowered by the elevating mechanism, a guard frame that is rotatably attached to the elevating frame, and a rotation that restricts the rotation of the guard frame at a guard position and an open position. And a dynamic regulation mechanism.

The crop tread prevention device of claim 1 includes a tread prevention frame and a lifting mechanism. The stepping prevention frame is disposed 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 lifting frame is lifted and lowered by the lifting mechanism. The guard frame is rotatably attached to the lifting frame. The rotation restricting mechanism restricts the rotation of the guard frame at a guard position and an open position.
Therefore, when maintaining the traveling machine body, 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, the maintenance work of the traveling machine body can be easily performed.

  In the crop tread prevention device according to a second aspect, when the guard frame is in the guard position, the guard position restricting means regulates the rotation of the guard frame. At times other than maintenance of the traveling machine body, the guard frame is regulated at the guard position by the guard position regulating means.

  In the crop tread prevention device according to a third aspect, when the guard frame is in the open position, the open position restricting means restricts the rotation of the guard frame. When maintaining the traveling machine body, the guard frame is regulated at the open position by the open position regulating means.

  According to a fourth aspect of the present invention, the open position restricting means temporarily locks the guard frame in the open position by a lock mechanism. This prevents the guard frame restricted to the open position from returning toward the guard position during maintenance work. Prevents the guard frame from interfering with maintenance work.

The harvesting machine of claim 5 includes a stepping prevention frame and a lifting mechanism. The stepping prevention frame is disposed 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 lifting frame is lifted and lowered by the lifting mechanism. The guard frame is rotatably attached to the lifting frame. The rotation restricting mechanism restricts the rotation of the guard frame at a guard position and an open position.
Therefore, when maintaining the traveling machine body, 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, the maintenance work of the traveling machine body can be easily performed.

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 crop tread prevention apparatus of this invention. It is a disassembled perspective view which shows the said crop tread prevention apparatus. It is a figure explaining the function of the above-mentioned crop tread prevention device. It is a figure explaining the function of the above-mentioned crop tread prevention device.

  1-6 is a figure explaining one Embodiment of this invention.

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

  In this harvester 100, a hitch 102 connected to a tractor protrudes in front of the traveling machine body 103, and is driven by a tractor (not shown).

  The traveling machine body 101 is equipped with a harvest tank 2 that is turned to the side and turned over to unload the harvest.

  In the lower part of the traveling machine body 101, there is provided an intake (hidden in the figure that cannot be seen) for taking in the crops planted in the fence. By running the intake according to the row of crops, the crops are taken up and harvested while being dug up. The harvested crops are loaded into the crop tank 2 via a transport conveyor (not visible in the figure) below the traveling machine body 101 and a rotary conveyor 103 behind the traveling machine body 101.

  A pair of front and rear columns 3 is provided on one side of the traveling body 101 in the traveling direction (arrow F direction). The upper part of the harvest tank 2 is pivotally supported by the upper parts of the pair of support columns 3 so as to be pivotable up and down. The harvest tank 2 is rotated in the direction of the arrow R by a driving means such as a hydraulic cylinder (not shown), and is reversed to the side of the traveling machine body 101 to unload the farm products loaded in the harvest tank 2. ing.

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

◆ Cropping prevention device 1
3 and 4 are diagrams showing the crop tread prevention device 1 of the present embodiment.
The crop tread prevention device 1 prevents the traveling machine body 101 from stepping on the unloaded harvest.

〔Overview〕
The crop tread prevention device 1 includes a tread prevention frame 10 and a lifting mechanism 30.
The stepping prevention frame 10 is disposed on the unloading side of the traveling machine body 101. The elevating mechanism 30 elevates and lowers the tread prevention frame 10.

  The stepping prevention frame 10 includes a lift frame 11 and a guard frame 21. The guard frame 21 is attached to the lifting frame 11. The elevating frame 11 is raised and lowered by the elevating mechanism 30, and the guard frame 21 is raised and lowered.

The raising / lowering mechanism 30 moves up and down the stepping prevention frame 10 in conjunction with an operation in which the harvest tank 2 rotates and reverses. That is, when the harvest tank 2 is rotated for unloading, the elevating mechanism 30 lowers the stepping prevention frame 10 near the ground surface on the side of the traveling machine body 101. As a result, the harvest that is unloaded in a mountain and collapses is blocked, and the tire 104 of the traveling machine body 101 is prevented from crushing the harvest.
The lifting mechanism 30 raises the tread prevention frame 10 to the original position in conjunction with the operation of the harvest tank 2 rotating and returning after unloading is completed.

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

The lever lever 31 moves the lifting frame 11 up and down in conjunction with the movement of the harvest tank 2 rotating and reversing.
The arm link 41 supports the rear end portion of the elevating frame 11 so that it can swing up and down and swing left and right.
When the elevating frame 11 moves up and down, the rod link 51 swings its front end portion to the left and right.

[Insulator lever 31]
The lever lever 31 is formed in a substantially L shape having a refracting portion 31A. The lever lever 31 is disposed in a direction crossing the traveling machine body 101, and the refraction part 31 </ b> A is pivotally supported by the pivot support unit 32. Thereby, the lever lever 31 can be turned up and down around the refracting portion 31A. By the rotation of the lever lever 31, the wire hook 33 at the front end and the pressing roller 34 attached to the rear end swing up and down.

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

  A pressing roller 34 attached to the rear end portion of the lever lever 31 contacts 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 press roller 34 is lifted accordingly. As a result, the lever lever 31 is rotated, and the wire hook 33 at the tip is lowered. As a result, the lifting frame 11 connected to the wire hook 33 by the connecting wire 35 is lowered.

  On the other hand, when the harvest tank 2 is rotated 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 is rotated, and the wire hook 33 at the tip is raised. Thereby, the elevating frame 11 connected to the wire hook 33 by the connecting wire 35 is raised.

[Arm link 41]
In the arm link 41, the horizontal shaft 42 at the rear end 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 arm link 41 can swing up and down on the tip side about the horizontal shaft 42.

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

  When the elevating frame 11 moves up and down by swinging the lever lever 31, the tip of the arm link 41 moves up and down. This stabilizes the trajectory when the elevating frame 11 moves up and down.

  Further, when the front end portion of the lift frame 11 swings left and right when the lift frame 11 moves up and down by the operation of the rod link 51 described later, the universal joint unit 43 connected to the rear support 13 of the rear end portion is In operation, the front end of the lifting frame 11 swings left and right.

[Rod link 51]
The rod link 51 is pivotally supported at the lower end of the support frame 52 at the rear end thereof. The support frame 52 is fixed to the front frame 106 of the traveling machine body 101. Also, an upper regulating member 53A and a lower regulating member 53B are fixed to the lower end side of the support frame 52, which regulates the rod link 51 from swinging up and down at a predetermined upper limit position and a lower limit position, respectively. .

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

  Therefore, when the lifting frame 11 is moved up and down by the swing of the lever lever 31, the rod link 51 rotates, and the front support 14 provided at the front end of the lifting frame 11 approaches the traveling machine body 101. Swings to move away or away. That is, when the lifting frame 11 is raised, the front support 14 approaches the traveling machine body 101, and when the lifting frame 11 is lowered, the front support 14 is moved away from the traveling machine body 101.

[Stepping prevention frame 10]
The stepping prevention frame 10 is lifted and lowered by the lifting mechanism 30 described above.

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

The lifting frame 11 is lifted and lowered by the lifting mechanism 30.
The guard frame 21 is rotatably attached to the lifting frame 11.
The rotation restricting mechanism restricts the rotation of the guard frame 21 at a guard position and an open position.

[Elevating frame 11]
The elevating frame 11 is provided with a rear support 13 at the rear end of the frame main body 15 extending along the side surface of the traveling machine body 101 and with 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 lever 31 through 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 body 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 generally flat box shape, and is arranged so that the closest facing faces 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 at a portion of the rear support 13 near the traveling machine body 101.

A rear projecting shaft 13 </ b> B for pivotally supporting the guard frame 21 is provided on the front surface of the rear support 13.
Guard position regulating means 13C, which will be described later, is provided below the protruding shaft 13B.

  The front support 14 has a generally flat box shape, and is disposed so that the closest facing faces 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 supporting the guard frame 21 is provided on the front surface of the front support 14.
A lock mechanism 16, which will be 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.

The rear bracket 25 is pivotally supported by the rear projecting shaft 13B at the base portion, and the arm portion 25A rotates.
The front bracket 26 is pivotally supported by the front projecting shaft 14B at the base portion, and the arm portion 26A rotates.

The plurality of guard pipes 23 are arranged in parallel from the rear part of the rear bracket 25 to the front part of the front bracket 26. In this example, six guard pipes 23 are arranged alongside the arm portions 25A and 26A.
An L-shaped frame pipe 24 is disposed outside the six guard pipes 23.

  Of the six guard pipes 23, the one arranged closest to the root functions as a lock pipe 23A that is locked by a lock mechanism 16 described later.

[Rotation restriction mechanism]
As described above, the rotation restricting mechanism restricts the rotation of the guard frame 21 at the guard position and the open position.
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 where 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 vertically oriented. In the state where the guard frame 21 is kept in the guard position, as described above, the elevating mechanism 30 raises and lowers the tread prevention frame 10 in conjunction with the reversing operation of the harvest tank 2.
The open position is a position where the guard frame 21 is turned sideways. Maintenance work on the lower side of the traveling machine body 101 is facilitated by setting the guard frame 21 to the open position while the stepping prevention frame 10 is raised.

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 where the rotation of the guard frame 21 is restricted at the open position.

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

  The rotation restricting 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 protrusion shaft 14B. The lock mechanism 16 temporarily locks the guard frame 21 in the open position, and functions as an open position restricting means for restricting the rotation of the guard frame 21 when the guard frame 21 is in the open position.

  The lock mechanism 16 includes a lock plate 16 </ b> A that is 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 periphery of the lock pipe 23A.
The lock plate 16A is provided with a fan-shaped balance adjusting portion 18 below the shaft support portion 16B. The balance adjusting unit 18 is configured to balance the weight so that the lock plate 16A itself is rotated in a direction in which the hook portion 17 is hooked on the lock pipe 23A in a state where the hook portion 17 is hooked on the outer periphery of the lock pipe 23A. Is the adjusted shape. That is, the fan shape of the balance adjusting portion 18 is arranged to be more biased toward the lock pipe 23A than the shaft support portion 16B in a state where the hook portion 17 is hooked on the lock pipe 23A.

[Operation]
In the crop tread prevention device 1, the lifting mechanism 30 moves the tread prevention frame 10 up and down in conjunction with the operation of the crop tank 2 rotating and reversing. That is, when the harvest tank 2 is rotated for unloading, the elevating mechanism 30 lowers the tread prevention frame 10 to near the ground surface. As a result, the harvest that is unloaded in a mountain and collapses is blocked, and the tire 104 of the traveling machine body 101 is prevented from crushing the harvest. The lifting mechanism 30 raises the stepping prevention frame 10 to the original position in conjunction with the operation of the harvest tank 2 rotating and returning after the unloading is completed.

  The raising / lowering of the stepping prevention frame 10 is performed in a state where the guard frame 21 is 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 gripped by hand and lifted from the vertical direction to the arrow A direction. Then, the rear bracket 25 and the front bracket 26 rotate upward about the rear protruding shaft 13B and the front protruding shaft 14B, 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 lock plate 16A itself is biased in the direction in which the hook portion 17 is hooked on the lock pipe 23A by the weight of the balance adjusting portion 18. As a result, the locked state is maintained, and the guard frame 21 is regulated to maintain the open position. Thus, the maintenance work under the traveling machine body 101 is facilitated by setting the guard frame 21 to the open position in the state where the stepping prevention frame 10 is raised.

  When the guard frame 21 is returned from the open position to the guard position, the lock plate 16A is rotated in the opposite direction to the lock direction while the guard frame 21 is rotated slightly upward, so that the hook portion extends from the lock pipe 23A. 17 is removed. Since the lock is released by this, the guard frame 21 is returned to the original guard position. The guard frame 21 is restricted to the guard position by contacting the guard position restricting means 13C.

[Effect of the embodiment]
The crop tread prevention device and the harvester of the present embodiment have the following operational effects.

The present embodiment includes a stepping prevention frame 10 and a lifting mechanism 30. The stepping prevention frame 10 is disposed on the unloading side of the traveling machine body 101. The elevating mechanism 30 raises and lowers the tread prevention frame 10.
The stepping prevention frame 10 includes an elevating frame 11, a guard frame 21, and a rotation restricting mechanism. The lifting frame 11 is lifted and lowered by the lifting mechanism 30. The guard frame 21 is rotatably attached to the lifting frame 11. The rotation restricting mechanism restricts the rotation of the guard frame 21 at a guard position and an open position.
Therefore, when maintaining the traveling machine body 101, 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, the maintenance work of the traveling machine body 101 can be easily performed.

  In the present embodiment, when the guard frame 21 is in the guard position, the guard position restricting means 13 </ b> C restricts the rotation of the guard frame 21. At times other than maintenance of the traveling machine body 101, the guard frame 21 is regulated at the guard position by the guard position regulating means 13C.

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

In the present embodiment, the open position restricting means temporarily locks the guard frame 21 in the open position by the lock mechanism 16. For this reason, the guard frame 21 restricted to the open position is prevented from returning toward the guard position during maintenance work. This prevents the guard frame 21 from interfering with maintenance work.

[Modification]
The above has described a particularly preferred embodiment of the present invention. However, the present invention is not intended to be limited to the illustrated embodiment, and can be implemented by being modified in various aspects, and the present invention includes various modifications. This is the purpose.

1: cropping tread prevention device 2: crop tank 3: strut 10: tread prevention frame 11: lifting 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 projecting shaft 15: Frame body 16: Lock mechanism 16A: Lock plate 16B: Shaft support 17: Hook 18: Balance adjusting unit 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: lifting mechanism 31: lever lever 31A: refracting part 32: shaft support unit 33: wire hook 34: pressing roller 35: connecting wire 41: Arm link 42: Horizontal shaft 43: Universal joint unit 44: Bearing unit 51: Rod Link 52: support frame 53A: upper regulation member 53B: lower regulating member 100: harvester 101: vehicle body 102: hitch 103: carousel 104: Tire 105: rear frame 106: front frame

Claims (5)

A device for preventing the traveling machine from stepping on the unloaded harvested product in a harvesting machine equipped with a harvested tank that rotates to the side to unload the harvested product. There,
A stepping prevention frame disposed on the unloading side of the traveling machine body, and a lifting mechanism for raising and lowering the stepping prevention frame,
The stepping prevention frame restricts the lifting frame that is lifted and lowered by the lifting mechanism, the guard frame that is pivotably attached to the lifting frame, and the guard frame and the opening position, respectively. A crop tread prevention device comprising a rotation restricting mechanism. The crop tread prevention device according to claim 1, wherein the rotation restricting mechanism includes guard position restricting means for restricting the rotation of the guard frame when the guard frame reaches a guard position. The crop tread prevention device according to claim 1, wherein the rotation restricting mechanism includes an open position restricting unit that restricts the rotation of the guard frame when the guard frame is in the open position. The crop tread prevention device according to claim 3, wherein the open position restricting means includes a lock mechanism that temporarily locks the guard frame in the open position. A crop tank prevention device for preventing the traveling vehicle body from stepping on the unloaded harvested product, which is provided with a harvested tank that rotates to the side in order to unload the harvested material. A harvesting machine further comprising
The crop tread prevention device is
A stepping prevention frame disposed on the unloading side of the traveling machine body, and a lifting mechanism for raising and lowering the stepping prevention frame,
The stepping prevention frame includes an elevating frame that is raised and lowered by the elevating mechanism, a guard frame that is rotatably attached to the elevating frame, and a rotation that restricts the rotation of the guard frame at a guard position and an open position. A harvesting machine characterized by comprising a movement regulating mechanism.

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