JPH0115319Y2 - - Google Patents

Description

[Detailed description of the invention] The invention provides a state in which the connecting link between the reaping pretreatment section and the cylinder for lifting the main machine is in a non-swingable state that allows the reaping pretreatment section to be raised and lowered by the cylinder; The present invention relates to a combine harvester that can be freely switched to a swingable state that allows a processing section to be moved forward and away from the main machine.

The above-mentioned combine harvester is designed so that by separating the pre-reaping treatment section and the main machine, a working space can be formed between them to facilitate inspection and repair work. In order to make it possible to separate the cylinder from the cylinder, it is only necessary to switch the connecting link to the swingable state, and the operation can be performed more easily than by removing the connecting pin of the cylinder. However, conventionally,
As shown in FIG. 7A showing the connected state of the pre-reaping processing section 1, and as shown in FIG. A connecting frame 5 pivotally connected to the pre-processing section frame 2 and the machine side frame 4 is provided between the machine side support column 3 and the connecting frame 5 is connected to the machine side frame 4 around a connecting shaft 6. The pre-reaping treatment section 1 is moved away by swinging it forward. In other words, the pre-reaping treatment section 1 is separated from the main machine while remaining connected to the machine via the connection frame 5. Therefore, it was not possible to secure a sufficiently wide working space between the pre-reaping processing section and this machine.

The present invention enables the pre-reaping processing section and this machine to be separated by a large distance to ensure a sufficiently large working space, and also allows the connection work of the pre-reaping processing section to be performed easily and quickly. With the goal.

Next, embodiments of the present invention will be described based on the drawings.

As shown in FIG. 1, this machine is constructed by equipping a machine base with a crawler-type traveling device 7 with a threshing section 8, a shredding discharge section 9 for threshing waste straw, a driving section 10, a driving section 11, etc. As the vehicle travels, the planted grain culm is divided into objects to be reaped and objects not to be reaped by the weeding tool 12, and while the object to be reaped is pulled up by the device 13, it is reaped by the reaping device 14, and the reaped grain is removed. A reaping pre-processing section 1 configured to supply culms to the starting end of the threshing section 8 by a conveying device 15 is connected to the front part of the machine in a state where it can be oscillated up and down by a hydraulic cylinder 16, A combine harvester has been constructed.

To connect the preprocessing section 1 to the machine, as shown in Figs. 2 and 4, both left and right ends of the frame 2, which also serves as the transmission case of the preprocessing section 1, are connected to the main body of the machine. It is fitted into the upper end of the support column 3a or 3b which is erected in parallel to the left and right sides of the frame 4 so as to be able to swing up and down. And the front struts 3a, 3b
The connecting boss portion 17 for each frame 2 is connected to a fixed side portion integrally formed on the support body and to the fixed side portion so as to be able to swing open and close so that the frame 2 can be attached and detached. It is formed into a two-part type consisting of a fixed side part and an opening/closing side part configured to be tightened and fixed with bolts in a connected state, and both boss parts 17, 17 are formed.
By opening the frame 2 and pulling it forward from the fixed boss part, the frame 2 can be separated from the machine. The outer peripheral portion 19b of the frame 2 constitutes a fitting portion 19 for suppressing relative movement between the frame 2 and the boss portion 17 in the longitudinal direction of the machine body. The frame outer circumferential portion 19b is placed and slid on the upwardly facing front downward slope 20, which is provided in the fixed side boss portion to receive and support the opening/closing side boss portion, and is guided into the recess 19a. It also serves as a guide surface. Second
As shown in FIG. 6 and FIG. 6, the cylinder side end of the link 21 connecting the frame 2 and the cylinder 16 is connected to a pair of cylinder locking brackets 22, 22 fixed to the frame 2. The cylinder rod is configured to be inserted between the brackets 22, 22, and cooperates with a pin 23 that locks the cylinder rod to the brackets 22, 22 in order to enable the cylinder 16 of the reaping pretreatment unit 1 connected to the machine to be moved up and down. The lock pin 24, which disables the swing of the link 21 inserted between the brackets, is inserted between the brackets 2 and 2.
2 in a detachable and releasable manner, and the connecting link 2
1 is inserted between the brackets and the lock pin 24 is attached, the connecting link 21 becomes unable to swing relative to the frame 2 and becomes in a working state in which the cylinder 16 can move up and down the reaping pretreatment section 1, and When the lock pin 24 is removed, the connecting link 21 becomes swingable with respect to the frame 2, and the pre-reaping section 1 is placed in a separated state in which it is possible to move the reaping pre-processing section 1 forward with respect to the machine. It is configured. A stand 25 is placed on each of the left and right sides near the lower end of the frame 2 so as to serve as a safety cover that covers the lateral outer side of the reaping device 14, and from the weeding tool support rod 26 so that the ground-contacting side does not touch the ground during work. The reaping pre-treatment section is detachable from the main machine and can be permanently installed in a state where it is retracted upwards, and a state in which it is used facing downwards, with the ground side protruding downward from the weeding tool support rod 26. 1 in a posture that is tilted backwards from the connection posture with respect to the machine and is almost close to the connection posture, that is, in a posture in which the connection portion of the frame 2 to the boss portion 17 is located at a level lower than the level for connection to the boss portion 17. It is configured to provide ground support.

As shown in FIGS. 3 and 5, the stand 25 with the reaping pre-processing section 1 in use is lowered to a state where it touches the ground, and both boss sections 17,
17 to the open state and the connecting link 21 to the pre-processing section separated state, and then swinging the reaping pre-processing section 1 forward about the stand 25 to move the frame 2 to the boss. Part 17
By moving the machine backward while separating it from the frame 2, the transmission belt 29 that connects the pre-processing part input shaft 27 protruding from the frame 2 and the traveling transmission 28 is deformed, thereby causing the frame 2 and the transmission 28 to move relative to each other. By being movable, the reaping pretreatment section 1 can be moved forward from the machine, and a working space for inspection and repair can be formed between them.
When reconnecting the reaping pre-processing section 1, the frame 2
By simply bringing the machine close to the reaping pre-processing section 1 with the frame placed on the guide surface 20, the frame 2 is moved into the recess 19a by the action of the guide surface 20 and the fitting section 19a.
It is configured to fit into the boss portion 17 and to be connected to the boss portion 17 in a predetermined state.

In addition, the stopper 30 shown in FIGS. 2 and 8,
30 is a cylinder 16 when the reaping pre-processing section 1 is separated.
This is to limit the range of swing of the cylinder 16 in order to support the cylinder 16 so that it does not fall.

In summary, the present invention, in the above-mentioned structure of the pre-reaping processing section connecting section of the combine harvester, connects the frame 2 of the reaping pre-processing section 1 to the main machine in a separable manner,
The frame 2 and the machine-side connecting portion 17 thereto
A fitting part 1 is provided between the frame 2 and the machine side connecting part 17 to suppress relative movement in the front-rear direction.
9, the fitting part 19 is provided with a guide surface 20 for guiding the convex part 19b into the concave part 19a, and a stand 25, which can be moved up and down, is installed near the lower end of the frame 2 and is separated from the machine. It is characterized in that the pre-reaping processing section 1 is permanently installed at a location where it is tilted backwards from the connected posture with respect to the machine and is supported on the ground in a posture substantially close to the connected posture.

In other words, since the pre-processing section frame 2 can be completely separated from the machine, the pre-reaping section 1 and this machine can be separated from each other by a larger distance than in the past, where they remained connected by the connecting frame 5, making it easier to operate. Now we can secure a large enough space.
Moreover, since the fitting part 19 is provided, the preprocessing part frame 2 and the machine-side connecting part 17 can be easily and quickly aligned in a predetermined connected state by simply fitting one into the other. Furthermore, since the guide surface 20 is provided and the stand 25 is permanently installed, fitting the convex portion 19b into the recess 19a can be done while the guide surface 20 is acting. This can be done easily by simply bringing the unit 1 and the machine closer to each other, and the stand 25 can be set in the desired position by simply lowering it, saving space for inspection and repair work. The setting operation of the stand 25 is extremely easy to perform from the front,
The connection work can be performed extremely efficiently in terms of the positioning operation between the frame 2 and the machine-side connecting part 17 and the fitting operation of the fitting part 19.

[Brief explanation of the drawing]

The drawings show an embodiment of the combine harvester according to the present invention, in which Fig. 1 is an overall side view, Fig. 2 is a plan view showing the connected state of the pre-harvesting processing section, and Fig. 3 shows the separated state of the pre-harvesting processing section. 4 is a side view showing how the frames are connected, FIG. 5 is a plan view showing the separated state of the reaping pre-processing section, and FIG. 6 is a cross-sectional view taken along the - arrow in FIG. 2. FIGS. 7A and 7B are side views showing a conventional example of a pre-reaping treatment unit connection structure. 1... Reaping pre-processing section, 2... Frame, 16...
...Cylinder, 17...Machine side connection part, 19...Fitting part, 19a...Concave part, 19b...Convex part, 20...
...Guide surface, 21...Connection link, 25...Stand.

Claims (1)

[Scope of utility model registration request] Reaping pre-processing section 1 and cylinder 1 for lifting and lowering the main machine
6 into a non-swiveling state that allows the cylinder 16 to raise and lower the reaping pre-processing section 16, and a swingable state that allows the reaping pre-processing section 1 to be moved forward with respect to the machine. In this combine harvester, the frame 2 of the pre-reaping treatment section 1 is separably connected to the main machine, and the above-mentioned Fitting portion 19 that suppresses relative movement in the front-rear direction between frame 2 and machine-side connecting portion 17
The fitting part 19 is provided with a guide surface 20 for guiding the convex part 19b into the concave part 19a, and a stand 25 that can be freely raised and retired is installed near the lower end of the frame 2. A combine harvester characterized in that a reaping pre-processing section 1 is permanently installed at a position where the pre-reaping processing section 1 is tilted back from the connected posture relative to the main machine and is supported on the ground in a posture substantially close to the connected posture.