JPS6237936B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a movable device that connects a reaping section that reaps stem culms and conveys them to the threshing device to the front part of a traveling machine equipped with a threshing device so as to be operable to move up and down. The present invention relates to a combine harvester in which a lifting fulcrum part of a part is supported by a swinging arm that can swing back and forth with respect to a traveling machine body and can be received and fixed in a backward swinging position.

The above-mentioned combine harvester moves the reaping section forward by allowing the reaping section to be moved back and forth with respect to the traveling machine while its lifting fulcrum section is swung back and forth with a swing arm. In the state where the threshing device and the reaping section are moved, the various devices installed between the threshing device and the reaping section are exposed and inspected.
This makes adjustment easier, and when reassembling the reaping section to the traveling machine body after inspecting and adjusting various devices, as the reaping section is moved to the side of the traveling machine body, the lifting fulcrum of the reaping section is moved. This was designed to speed up and facilitate the assembly work by automatically moving it to the appropriate position relative to the aircraft body, but the following problem occurred.

In other words, when moving the reaping section to the side of the traveling machine while swinging the swinging arm backwards, the reaction that is received when the swinging arm swings to the desired backward swinging posture where it is received and fixed. This may cause the inconvenience of swinging forward again. For example, when the operator moves the reaping unit himself, there is a danger that the operator may lose his balance due to being pushed by the reaping unit that moves forward due to the reaction. It was hot.

Also, the swinging arm is fixed in the backward swinging position using fixing tools such as bolts, but if the swinging arm is simply received and supported in the backward swinging position, the swinging arm will be There was also the inconvenience of having to be careful when fixing the cutting part, as there was a risk of it swinging unexpectedly due to the weight of the cutting part.

The present invention has been made with the above-mentioned circumstances in mind, and in the combine harvester having the above-mentioned structure, as the swing arm swings backward, the swing arm is automatically locked in the backward swing posture. It is characterized by a built-in mechanism.

In other words, once the swinging arm is swung into the backward swinging position, it can be automatically locked in this position. The above-mentioned inconvenience of moving forward due to the recoil that is stopped, and the inconvenience mentioned above of having to perform the fixing work while being careful to prevent the swinging arm from swinging unexpectedly when it is in the backward swinging position. It can be resolved. As a result, it becomes possible to assemble the swinging arm into the desired backward swinging posture safely and efficiently.
A combine harvester that can be used better overall has been obtained.

Embodiments of the present invention will be described in detail below with reference to illustrative drawings.

FIG. 1 shows a side view of the front part of the combine, and the front part of the traveling body is equipped with a crawler traveling device 1, a threshing device 2, etc., and a device 3 for pulling out multiple stalk culms planted in a field. , a reaping unit 8 consisting of a reaping device 4 that cuts the base of the raised stalk culms, an auxiliary conveyance device 5 that merges the harvested stalk culms, a rear conveyance device 7 that conveys the merged stalk culms to the threshing feed chain 6, etc. are connected. Equipped.

As shown in FIG. 3A, the reaping section 8 is attached to an elevating frame 11 which also serves as a transmission case and is pivotably supported vertically and swingably on a bracket 10 fixed to the upper part of a support frame 9 provided on the traveling machine body. A bi-folding link mechanism 1 is supported, and the other end of a single-acting hydraulic cylinder 12, which has one end attached to the traveling body, is interposed between the elevating frame 11 and the traveling body.
It is connected to 3. Then, when the hydraulic cylinder 12 is forcibly extended, the reaping section 8 is operated to raise and swing with respect to the traveling machine, and when the hydraulic cylinder 12 is made freely extendable, the reaping section 8 shortens the hydraulic cylinder 12. It is configured to be lowered under its own weight while being operated. Therefore, the reaping section 8
During reaping work in a field, the machine is lowered to near the ground, and when traveling on a headland or on a road in a field, it is operated upward.

The reaping section 8 is separated from the traveling machine body and can be moved back and forth as described below.

That is, the lifting point part of the reaping part 8, that is, the bracket 10 is pivotally supported by the traveling machine body around the horizontal axis X, so that it can swing back and forth, and in a backward swinging position, it can swing against the support frame 9. It is connected to the free end of a swinging arm 14 that can be bolted while being received against the vehicle, and as a result of the back and forth swinging of this arm 14, it can be moved from an appropriate position relative to the traveling aircraft to a position further forward. It is configured to be swing-guided between the two positions.

Further, the end of the link mechanism 13 on the side of the elevating frame is pivotally supported to the elevating frame 11 so as to be swingable around the horizontal axis Y, and is releasably bolted to the elevating frame 11 in a posture along the elevating frame 11. It is pivotally connected to a swinging link 15 that can swing forward and backward, and by swinging this swinging link 15 backward, flexibility in the front and rear direction can be provided between the elevating frame 11 and the link mechanism 13. It is composed of

Also, as shown in FIGS. 4A and 4B, it is pivotally supported on the support frame 9 so as to be able to swing around the horizontal axis Z, and due to the biasing action of the spring 16, the front part is rotated in the forward range from the switching dead center C. As the swing arm 14 swings backward, the locking piece 17 is pushed backward in the rear range from the switching dead center C, and the pin 18 is fixed to the swing arm 14. A mechanism is configured to automatically lock this in the backward swinging position. In other words, if the locking piece 17 is switched to the forward swinging position, the pin 18 moving together with the swinging arm 14 will come into contact with the guide slope T of the locking piece 17, causing the locking piece 17 to move forward. It is designed to be automatically locked while pressing and swinging backward. Further, the lock is released by switching the locking piece 17 to the backward swinging position.

When the swing arm 14 and the support frame 9 are unlocked, the hydraulic cylinder 12 is extended and the reaping section 8 can be moved forward while its front end touches the ground ( (See FIG. 3B), and furthermore, the swing link 15
By releasing the fixation and manually pulling and moving the reaping section forward, the reaping section can be moved further forward. (See Figure 3 C)
In addition, in order to assemble the reaping section 8 to the traveling machine body again, first push the reaping section 8 backward, and then press the swing link 1.
5 is switched to a position along the lifting frame 11 and fixed in this position, and in this state, when the reaping section 8 is lifted rearward and upward and swung, the swinging arm 14 is received by the support frame 9. It will be automatically locked in the backward swinging position. (See Fig. 3 D) Therefore, in this state, the swing arm 14 can be fixed to the support frame 9 using bolts, or the hydraulic cylinder 12 can be switched to a freely extending and retracting state to allow the reaping section 8 to move under its own weight. In the lowered state, the swing arm 14 can be fixed to the support frame 9 using bolts.

Reference numeral 19 in the figure is an auxiliary wheel detachably attached to the reaping section 8, and is provided to support the reaping section 8 on the ground during the above-mentioned back-and-forth movement operation.

Incidentally, when the reaping section 8 is moved forward as described above, the output shaft 20 of the engine 20 disposed between the reaping section 8 and the threshing device 2, as shown in FIG.
The various devices such as the belt transmission mechanism that interlocks the input shaft 21 of the threshing device 2 and the input shaft 21 of the threshing device 2, and the belt transmission mechanism that interlocks the engine 20 and the input shaft 23 of the traveling transmission case 22 are exposed, and these devices are shown. Inspection and adjustment can be carried out easily without being obstructed by the reaping section 8. Reference numeral 24 in FIG. 2 is a belt that transmits the output from the transmission case 22 to the input pulley 25 provided at the base of the lifting frame 11, and as described above, when the reaping section 8 is moved forward, It is supposed to relax automatically.

In addition, the present invention allows the reaping section 8 to be operated by swinging up and down using a double-acting hydraulic cylinder whose one end is supported by the traveling machine body, or the reaping section 8 is operated to swing directly by manual force. This can also be applied to shapes.

Further, in carrying out the present invention, the swing arm 14 may be fixed using only the automatic locking mechanism of the present invention, but the automatic locking mechanism may be temporarily locked as in the embodiment. It is better to use the swing arm 14 only for this purpose, and to securely fix the swing arm 14 using bolts or the like.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the combine harvester according to the present invention, with FIG. 1 being a side view of the combine, FIG. 2 being a schematic side view of the lifting frame mounting section, and FIG.
B, C and D are side views showing the forward and backward movement of the reaping section, and FIGS. 4A and 4B are side views of the automatic locking mechanism. 2... Threshing device, 8... Reaping section, 10... Lifting fulcrum section, 12... Hydraulic cylinder, 14... Swinging arm.

Claims (1)

[Scope of Claims] 1. A reaping section 8 for reaping the stem culms and conveying them to the threshing device 2 is provided at the front of the traveling machine body on which the threshing device 2 is mounted.
A swinging arm 14 is connected to enable vertical and vertical swinging operation, and is also capable of swinging the vertical fulcrum part 10 of the reaping section 8 back and forth with respect to the traveling machine body, and can be received and fixed in a backward swinging posture. What is claimed is: 1. A combine harvester, characterized in that the combine harvester is equipped with a mechanism for automatically locking the swinging arm 14 in the backward swinging position as the swinging arm 14 swings backwards. 2. The combine harvester according to claim 1, wherein the reaping section 8 is operated to swing up and down using a single-acting hydraulic cylinder 12 whose one end is supported by a traveling machine body. 3. The combine harvester according to claim 1, wherein the reaping section 8 is operated to swing up and down using a double-acting hydraulic cylinder whose one end is supported by the traveling machine body.