JPH0413954Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention rotates the reaping part A of a combine harvester so that cleaning, oiling, inspection, repair, etc. can be done from the rear of the reaping part. This is related to a configuration that can be moved.

(b) Prior Art Conventionally, a technique for laterally rotating the reaping section of a combine harvester for cleaning has been known.

For example, there is a technique described in Japanese Utility Model Application Publication No. 58-94336.

(c) Problems to be solved by the invention However, in the above-mentioned conventional technology, the forward rotation pivot and the side rotation pivot are provided at the same location, and the rotation center is centered around this pivot. Since it is necessary to rotate this part during inspection and repair, it is not possible to place this part on the lower support, and the rocking and vibration during reaping must be received by the pivot part. ,
It was necessary to make this part particularly strong.

Lateral rotation of the reaping section does not occur that often, so if the strength is maintained so that it can be maintained when the harvester rotates, the inertial weight due to shaking can be reduced since repair and inspection work is performed while the combine is not moving. However, if it is in a cantilever support or unstable support when it is in the stowed state and traveling for work, inertia weight due to vertical shaking during travel will be applied and the pivoting support will be damaged. They become rattled or destroyed.

In order to eliminate this problem, the present invention aims to prevent the weight of the reaping section from being supported by the rotating pivot when the cantilevered horizontal rod is in the retracted state. When stored, one end of the horizontal rod rests on top of this.

(d) Means for solving the problem The purpose of the present invention is as described above. Next, the configuration for achieving the purpose will be explained.

In a combine harvester in which only the reaping part A can be rotated laterally with respect to the running part P and the threshing part B, the threshing part B
On one side of the front chassis, there is a first pivot support 3.
A second pivot support 5 is provided from the first pivot support 3 via a connecting rod 2, and the second pivot support 5 supports one side end of the reaping part A. When the reaping section A is rotated backwards about the first pivoting section 3, a lower support 17 on which the section of the rotating pivot section 5 can be placed protrudes from the shear seat, and the other side of the reaping section A is A lower support stand 15 on which the end portion can be placed protrudes from the chassis.

(E) Embodiment The purpose and structure of the present invention are as described above. Next, the structure of the embodiment shown in the attached drawings will be explained.

Figure 1 is an overall side view of the combine harvester of the present invention, Figure 2 is a plan view of the front of the combine, with the reaping section placed in its normal position, and Figure 3 is a diagram showing the reaping section rotated forward. The plan view of the state, Figure 4, is then shown.
FIG. 5 is an enlarged side view of the lateral rotation pivot, FIG. 6 is an enlarged plan view, and FIG. 7 is an enlarged rear partial sectional view. .

Referring to FIG. 1, the overall structure of the combine harvester will be explained.

A threshing device B, a paddy storage tank 13, etc. are arranged on a crawler type traveling device 1 forming a traveling section P. In front of the threshing device B, a reaping section A is movable up and down by a hydraulic cylinder 14, and is movable up and down about a vertical pivot support 7.

The first pivot support 3 and the second pivot support 5 of the present invention
is arranged on the opposite side from the seat 21.

This will be explained in more detail with reference to FIGS. 2, 3, and 4.

The reaping section A causes lodging grain culms using left and right dividing plates 10L, 10R and left and right raising devices 12L, 12R. Although the stock transport device and the upper transport device are not shown, after transporting with these, the vertical transport device 9
The stock ownership will be transferred to Feed Chain 11.

The driving force to the reaping section A is inputted to the input pulley 26 by a V-belt, the speed is changed by the reaping transmission case 8, and the driving force is transmitted to the vertical conveyance device 9 and the pulling device by the shaft in the vertical movement pivot portion 7. ing.

In addition, a support frame 34 is provided for driving the cutting blade and stock head conveying device downward from the vertical pivot support 7.
is prominent. The support frame 34 is configured to be lifted by a hydraulic cylinder 14 for vertical movement.

These vertically moving pivot parts 7 of the reaping section A are supported by a bearing support stand 20 on the right side and a bearing support stand 4 on the left side.
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The left bearing stand 4 is fixedly mounted on the second pivot support 5. Right side bearing support stand 20
is fixed on the chassis, and is configured to lock and fix the protruding pin 27 of the vertically movable support 7 by a locking device constituted by a hook 28 and a locking lever 18.

That is, after the vertically movable pivot portion 7 is fixed against the bearing support base 20, the hook 28 is locked and the locking lever 18 is used to prevent it from coming off.

Further, a locking piece 29 is protruded from the connecting rod 2 that connects the second rotational pivot support 5 and the first rotational pivot support 3, and a hook 30 is hooked onto this locking piece 29 to lock it. It is fixed with a lever 19. This makes it possible to completely lock left and right movement.

21 is a seat, 24 is a step, 23 is an operating column, 22 is a left/right steering lever, and 25 is a speed change lever.

In addition, a chassis 16 is installed horizontally at the front of the threshing device B, and a first pivot support 3 is provided on the chassis 16. A connecting rod 2 is protruded from the first pivot support 3, and A second pivot support 5 is constructed at the tip of the rod 2. Further, a horizontal rod 6 protrudes from the second pivot support 5, and a hydraulic cylinder 14 is pivotally supported at the tip of the horizontal rod 6.

With this configuration, the hydraulic cylinder 14 also rotates when the reaping section rotates in the lateral direction, so it is no longer necessary to remove the hydraulic cylinder from the support frame 34 each time the reaping section rotates.

However, since the hydraulic cylinder 14 is supported only from the side by the horizontal rod 6, when the hydraulic cylinder 14 expands and contracts, the support frame 34 is heavier, so there is a risk that the horizontal rod will bend backward and the reaping section will not rotate. There is.

In order to solve this problem, hydraulic cylinder 1
The holder 32 of No. 4 is applied to the lower support stand 15 fixed to the shear seat 33, and this reinforces the strength that is insufficient in the horizontal rod, and uses this as a base point for expansion and contraction of the hydraulic cylinder, and using this as a base, the support frame 34 is moved upward. It is designed to be pushed. Also, lower support stand 1
A guide bent portion 15a is provided at the tip so that the holder 32 of the hydraulic cylinder 14 can be easily placed on the holder 5.

Further, among the two pivot parts 3 and 5, the first pivot part 3 is supported from the chassis 33,
In addition, it is strong because there is a reinforcing rod at the top, but since the second pivot support 5 is cantilevered only by the connecting rod 2, there is a risk of it being damaged when the bending torque is large due to the weight of the reaping section. . In order to prevent this, a lower support stand 17 is protruded from the chassis 16, and the base of the horizontal rod 6 is placed on this for reinforcement.

A guide bending portion 17a is also formed here, and when the horizontal rod 6 is rotated and returned to its original position, the horizontal rod 6 rests on this lower support stand 17 to support bending due to the load of the combine harvester.

As shown in FIGS. 5, 6, and 7, 2
A pivot point is constructed. Shyashi 1
A support body 35 protrudes forward from the support body 6, and a vertical shaft 3b is protruded from the tip end of the support body 35. A cylindrical body 3a of the rotation pivot 3 is loosely fitted onto the vertical shaft 3 via upper and lower bearings 3c, 3c. This cylinder 3a
The connecting rod 2 protrudes further, and the cylindrical body 5b of the rotation pivot support 5 is fixedly installed at the tip of the connecting rod 2. Cylindrical body 5b
A vertical shaft 5c is loosely fitted into the vertical shaft 5c, a base portion 5a of a bearing support 4 is fixed to the upper end of the vertical shaft 5c, and a horizontal rod for supporting the hydraulic cylinder 14 is fixed to the lower part of the vertical shaft 5c. .

Further, 31 is a reinforcing rod that is projected from the shear sea or the threshing device side to the upper end of the vertical shaft 3b, and is reinforced to prevent the rotational pivot portion 5 from being destroyed by bending force.

In such a combine harvester in which only the reaping part A can be laterally rotated and is provided with the first rotational pivot part 3 and the second rotational pivot part 5, the reaping part A can be changed from the state during normal reaping work. When releasing the rotation in the lateral direction, the rotation order regulating plate 38 is first rotated forward in a manner close to parallel movement, and then rotated to open sideways. .

The rotation order regulating plate 38 is shown in FIGS. 5, 6, and 7.
As shown in the figure, it protrudes from the chassis 33 and is provided parallel to the lower support base 15.

That is, if it is first rotated at the first pivot support 3,
It does not engage with this rotation order regulating plate 38,
It is pulled forward smoothly, but on the contrary, the second
If the rotation pivot portion 5 rotates first, it hits this rotation order regulating plate 38.

This point will be explained with reference to FIG.

8 is a plan view of the horizontal rod 6, FIG. 9 is a side view, FIG. 10 is a rear view, and FIG. 11 is a diagram showing the cylinder holder 32 approaching the lower support base 15.

That is, as shown in FIG. 8, a distance t is provided between the holder 32 of the hydraulic cylinder 14 and the rotation order regulating plate 38. This is because the holder 32 moves slightly toward the rotation order regulating plate 38 due to the rotation of the first rotation pivot 3, so the interval t is provided to absorb this movement. It is being done. However, I got the second one in the wrong order.
If you try to rotate from the rotation pivot support 5 first, the radius a
If you try to make this rotation, it will hit the rotation order regulating plate 38, making it impossible. The rotation order regulating plate 38 is provided with a guide bent portion 38a at its tip for storage. Conversely, when storing the reaping section, it will come into contact with the rotation order regulating plate 38 unless the order is reversed.

Further, the structure of the lower support base 17 of the horizontal rod 6 is shown in detail in FIGS. 8, 9, 10, and 11. The lower support stand 17 projects vertically in parallel from the chassis 16, and the upper plate 17b merely serves as a guide. The guide bending portion 17a allows the horizontal rod 6 to easily rest on the lower support base 17. This lower support stand 17 supports the base of the load of the reaping section in place of the horizontal rod.

Further, the load on the tip of the horizontal rod is also supported by the vertical pivot support 7 in the upper part, but is borne by the cylinder holder 32 resting on the lower support base 15 in the lower part. A guide bending portion 15a is provided on the lower support base 15 so that it can be easily stepped on when stored.

As mentioned earlier, the lower support stand 15 also serves as a base when the hydraulic cylinder 14 is rotated together with the reaping section A to expand and contract.
As a result, the hydraulic cylinder 14 can be rotated together with the reaping section A, making it unnecessary to remove the hydraulic cylinder section.

The operation based on the above configuration will be explained.

In normal working or running conditions, as shown in FIG. 2, the reaping section A is fixed by locking levers 18 and 19 so that it cannot be moved from side to side with hooks.

If straw waste is clogged in various parts of the reaping section and you want to clean it, or if the grain culm is difficult to unclog,
When it is necessary to repair, inspect, or lubricate each part, remove the locking levers 18 and 19 and first pull out the reaping part A forward to the state shown in FIG. 3.

At this time, if it is rotated to the side without being pulled forward, the feed chain 11 and vertical conveyance device 9 will come into contact with each other at the pivot point and break because the reaping section A and threshing device B are in close contact with each other to shorten the overall length. That's what happens. First, it is pulled forward to open a gap between the reaping section A and the threshing device B, and then it is rotated to the side as shown in Fig. 4.

When returning to the original position, the horizontal rod 6 for supporting the hydraulic cylinder is rotated to the side and pushed backwards.
The guide bending portions 17a and 15a are placed smoothly on the guide bending portions 17a and 15a, thereby compensating for the lack of strength of the horizontal rod.

(f) Effects of the invention Since the invention is constructed as described above, it has the following effects.

First, in normal reaping work, the weight of the reaping part A does not need to be supported by the first pivot support 3 or the second pivot support 5; Since it is supported by the lower support stand 17 and the lower support stand 15 which supports the other end, the pivot supports 3 and 5 are not subjected to rocking or vibration loads during work.

Second, the first pivot support 3 and the second pivot support 5
By providing the two pivot points, the reaping section A is first rotated around the first pivot point 3, moving the reaping section A forward, and then moved around the second pivot point 5. Since it rotates laterally, there is no possibility that the other end side of the reaping part A interferes with other parts when rotating, unlike in the case of conventional technology where there is only one pivot point for lateral rotation. In addition, it is no longer necessary to provide a large clearance for rotating the reaping section to prevent interference.

Thirdly, when cleaning a blockage between the threshing section B and the reaping section A or for simple inspection and repair, move the reaping section A parallel to the front centering on the first pivot support 3. There are cases where the process can be completed by movement alone and no large rotation around the second rotation pivot 5 is required, and in such cases, only forward rotation can be performed easily. .

[Brief explanation of the drawing]

Figure 1 is an overall side view of this combine, Figure 2 is a plan view of the front of the combine, with the reaping section placed in its normal position, and Figure 3 is a diagram showing the reaping section rotated forward. A plan view, Fig. 4 is a plan view with the reaping section laterally rotated, Fig. 5 is an enlarged side view of the rotation pivot, Fig. 6 is an enlarged plan view, and Fig. 7 is an enlarged view as well. A partial sectional view of the rear surface, FIG. 8 is a plan view of the 6 parts of the horizontal rod, FIG. 9 is a side view, FIG. 10 is a rear view, and FIG. 11 shows the cylinder holder 32 approaching the lower support base 15. It is a drawing. A... Reaping section, B... Threshing section, P... Traveling section,
3...First rotation branch, 5...Second rotation branch,
6...Horizontal rod, 15...Lower support stand, 16, 33...
...Shiashi, 17...Lower support stand.

Claims (1)

[Scope of utility model registration request] In a combine harvester in which only the reaping part A can be rotated laterally with respect to the running part P and the threshing part B, the threshing part B
On one side of the front chassis, there is a first pivot support 3.
A second pivot support 5 is provided from the first pivot support 3 via a connecting rod 2, and the second pivot support 5 supports one side end of the reaping part A. When the reaping section A is rotated backwards about the first pivoting section 3, a lower support 17 on which the section of the rotating pivot section 5 can be placed protrudes from the shear seat, and the other side of the reaping section A is A lateral rotation device for a reaping section of a combine harvester, characterized in that a lower support stand 15 on which an end portion can be placed protrudes from a shear sea.