JPS6147482B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a reaping unit which is connected to the front part of a traveling machine body equipped with a threshing device so as to be able to swing up and down, and which reaps the stalk culm and conveys it to the threshing device. Regarding a combine harvester that is configured to be raised and lowered by direct operation using a hydraulic cylinder attached to it or indirect operation via a link mechanism interposed between the traveling machine body and the reaping part, the purpose is to displace the reaping part largely forward from the traveling machine body. In order to make it easier to inspect and adjust the various devices installed between the threshing device and the reaping section, the reaping section can be reassembled to the machine body quickly and easily. The aim is to ensure that

In the above combine harvester, various devices such as a belt transmission mechanism that interlocks the engine and the traveling transmission case and a belt transmission mechanism that interlocks the engine and the threshing device are arranged between the threshing device and the reaping section. . When inspecting and adjusting these devices,
The reaping section is separated from the traveling machine body and moved forward to expose various devices, but this poses the following problem.

In other words, when the reaping section that has been separated from the traveling machine is inspected and adjusted and then reassembled to the traveling machine, the lifting fulcrum of the reaping section, which is in a free state with respect to the traveling machine, is aligned with the position where it is connected to the traveling machine. In addition to being time-consuming, it also requires the troublesome work of reconnecting the reaping section and the separated hydraulic cylinder or link mechanism, making it difficult for unskilled personnel to quickly perform the assembly work.

The present invention has been made with the above-mentioned circumstances in mind, and in the combine harvester having the above-mentioned structure, the elevating fulcrum of the reaping section, which can be operated to release the connection to the traveling machine body, is located at the position where it is connected to the traveling machine body. A mechanism is provided for guiding the reaping section to a position displaced forward from this position, and a state in which the relative movement of the reaping section and the hydraulic cylinder in the front-rear direction is flexible and a state in which the relative movement is not flexible is provided. A flexible linkage mechanism that can be switched is interposed, the lifting fulcrum part is guided back and forth by the guide mechanism, and the operation of the cylinder itself and the flexible linkage mechanism allow relative back and forth movement between the hydraulic cylinder and the reaping part. The present invention is characterized in that the reaping section is configured to be movable back and forth with respect to the traveling machine body.

In other words, the lifting fulcrum of the reaping section is guided back and forth using a guide mechanism, and the hydraulic cylinder and the reaping section are not separated, but by the cooperation of the flexibility caused by the operation of the cylinder itself and the flexibility provided by the linked flexibility mechanism. Since the cylinder and the reaping section are designed to allow relative movement in the longitudinal direction over a large range, and the reaping section can be moved back and forth with respect to the traveling machine body, in order to assemble the reaping section to the traveling machine body, By moving the fulcrum part backward with respect to the traveling machine body, the lifting fulcrum part can be automatically guided to the connection position, and the reaping part and hydraulic cylinder can be moved by simply switching the flexible linkage mechanism to a non-flexible state. can be linked to the desired state. In the end, we have solved both of the above-mentioned problems at once, and have achieved a combine harvester that allows even unskilled workers to quickly and easily assemble the reaping section in conjunction with inspection and adjustment of various devices. .

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 pivotably supported vertically on a bracket 10 which is bolted to a support frame 9 provided on the traveling machine body so that the connection can be released. The other end of a hydraulic cylinder 12, which is supported by a dual-purpose lifting frame 11 and has one end attached to the traveling machine body, is connected to a bi-folding link mechanism 13 interposed between the lifting frame 11 and the traveling machine body. connected. and,
The reaping section 8 is moved by the expansion and contraction operation of the hydraulic cylinder 12.
is configured to be driven up and down and oscillated with respect to the traveling aircraft body. Therefore, the reaping section 8 is operated downward to near the ground during reaping work in the field, and is operated upward when traveling on the headland or on the road within the field.

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

That is, the elevating fulcrum of the reaping section 8, that is, the bracket 10 is connected to the free end of a swinging arm 14 that is pivotally supported by the traveling machine body around the horizontal axis X and can swing back and forth. Also, this arm 1
4 constitutes a mechanism that guides the bracket 10 between a position where it is connected to the traveling aircraft and a position displaced forward from this position.

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 in a forward swinging posture along the elevating frame 11. It is pivotally connected to a swinging link 15 that can swing back and forth, and the swinging of the swinging link 15 provides flexibility in the front and back direction between the lifting frame 11 and the hydraulic cylinder 12. By fixing the dynamic link 15, a flexible linkage mechanism is constructed which can be switched to a state in which no flexibility is provided.

When the bracket 10 is disconnected from the support frame 9, by extending the hydraulic cylinder 12, the reaping section 8 can be moved forward while its front end touches the ground. (See Figure B), 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 Fig. 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 elevating frame 11 and fixed in this position, and in this state, when the hydraulic cylinder 12 is operated to shorten, the bracket 10 can be moved to a position where it is connected to the support frame 9. . In addition, 16 in the figure is an auxiliary wheel detachably attached to the reaping part 8,
It is provided to support the reaping part on the ground during the above-mentioned back and forth movement.

Therefore, by moving the reaping section 8 forward as described above, the engine 1 disposed between the reaping section 8 and the threshing device 2 as shown in FIG.
7 and the input shaft 18 of the threshing device 2, and a belt transmission mechanism that links the engine 17 and the input shaft 20 of the traveling transmission case 19, etc. are exposed. These inspections and adjustments can be carried out without being interfered with by the reaping section.

21 in FIG. 2 is the mission case 1.
A belt for transmitting the output from 9 to an input pulley 22 provided at the base of the lifting frame 11,
As described above, when the reaping section 8 is moved forward, it is automatically relaxed.

4 shows another embodiment of the present invention, in which a threaded rod 24 pivotably supported on the swing arm 14 is used to move the swing arm 1.
4 is fixed to the support frame 9.

In the embodiment, the driving force of the hydraulic cylinder 12 was used to move the reaping part 8 back and forth in a certain range, but the hydraulic cylinder 12 was switched to a freely extending and contracting state, and no human force was applied in the entire range. The reaping section 8 may be moved back and forth by the operator. In addition, when the hydraulic cylinder 12 is placed in a freely extending and contracting state as described above, the reaping section 8 is fixed to the ground using a fixing device 23 that plunges into the mud as shown in FIG. By moving it backward or forward, the reaping section 8 may be moved back and forth with respect to the machine body.

Moreover, the present invention can of course be applied to thighs in which the hydraulic cylinder 12 is directly connected to the reaping section 8 and operated directly.

Further, in the embodiment, a double-acting hydraulic cylinder 12 is used, but a single-acting hydraulic cylinder is used in which the reaping section 8 is raised by hydraulic pressure and lowered by its own weight. The present invention is also applicable to these cases.

[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 front part of the combine, and FIG.
The figure is a side view of the lifting frame attachment part, Figure 3 A,
FIG. 4 is a side view of another embodiment, and FIG. 5 is a side view of an applied example. 2... Threshing device, 8... Reaping section, 10... Lifting fulcrum section, 12... Hydraulic cylinder, 13... Link mechanism, 14... Swinging arm, 15... Swinging link.

Claims (1)

[Scope of Claims] 1. A reaping unit 8, which is connected to the front part of the traveling machine body on which the threshing device 2 is mounted so as to be able to move up and down, and which reaps the stalk culm and conveys it to the threshing device 2, is attached to the traveling machine body at one end. A combine harvester configured to be raised and lowered by direct operation using an attached hydraulic cylinder 12 or indirect operation via a link mechanism 13 interposed between the traveling machine body and the reaping part 8, and in which the connection to the traveling machine body can be released. A mechanism is provided for guiding the elevating fulcrum part 10 of the reaping part 8 between the connecting position to the traveling machine body and a position displaced forward from this position, and between the reaping part 8 and the hydraulic cylinder 12,
A flexible linkage mechanism that can be operated to switch between a state that provides flexibility and a state that does not provide flexibility in the relative movement of the two in the front-back direction is interposed, the lifting fulcrum portion 10 is guided back and forth by a guide mechanism, and the cylinder 12 The combine harvester is characterized in that the reaping section 8 can be moved back and forth with respect to the traveling machine while allowing relative back and forth movement between the hydraulic cylinder 12 and the reaping section 8 through the operation itself and a flexible linkage mechanism. 2. The combine harvester according to claim 1, wherein the guide mechanism is configured using a swinging arm 14 that is pivotally supported on the traveling body so as to be swingable back and forth. 3. The flexible linkage mechanism is configured using a swinging link 15 that is pivotally supported on the reaping section 8 so as to be swingable back and forth, and that can be fixed in a forward swinging position. The combine harvester according to any of Clause 2.