JPH08839Y2 - Switching device for straw cutter - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is configured to switch between a cutter work for guiding the straw into the straw cutter and a discharge work for discharging the straw as a long straw to the rear of the machine. Regarding the switching device of the straw cutter in the combine, in detail, the switching of the straw cutter that prevents the straw cutter from rotating to the side of the machine when the switching device is moved upward and switched to the cutter work It relates to the device.

2. Description of the Related Art It is desirable that the straw cutter attached to the rear part of the machine can be rotated to the side of the machine in order to facilitate maintenance and inspection work of the machine (theshing machine). However, in general, the straw cutter is provided with a switching plate that swings up and down to switch between the cutter work for guiding the straw into the straw cutter and the discharge work for guiding it to the rear of the machine as it is. If the cutter plate is rotated while it is switched to the cutter work, the switching plate that is moving upward abuts the straw transport chain. For this reason, conventionally, an operator moves the switching plate downward every time it is rotated, but if the switching plate is inadvertently rotated without forgetting the lowering operation, the switching plate may come into contact with the straw chain and be damaged. there were.

Problems to be Solved by the Present Invention The present invention was devised in order to solve these problems in view of the above-mentioned circumstances. The purpose of the present invention is to put the straw cutter on the side of the machine body. When rotating to
Switching of the straw cutter that ensures that the switching plate is always in the downward state, and can prevent the risk that the switching plate that has been inadvertently moved upwards will contact the straw transport chain and be damaged It is intended to provide a device.

Means for Solving the Problems In order to solve the above problems, the technical means adopted by the present invention is to provide a straw cutter at the rear part of the machine body, and use a switching plate that moves up and down on the straw cutter. In the combine straw cutter, which opens and closes the straw input port of the straw cutter to switch between cutter work and discharge work that discharges straw backwards as long straw. It is pivotally attached to the machine so that it can be turned toward, and the fixing mechanism that fixes the straw cutter to the cutter working position at the rear of the machine and the vertical movement mechanism of the switching plate are interlocked to release the fixing mechanism. It is characterized in that the switching plate is configured to move downwards in conjunction with each other.

Therefore, according to the present invention, if the switching plate is moved upward by the vertical movement mechanism, the straw can be guided from the opened straw input port into the straw cutter and the cutter work can be performed. When the plate is moved down, the straw input port is closed and the straw is discharged to the rear of the aircraft as it is.

Then, during maintenance and inspection work, if the fixing mechanism that fixes the straw cutter to the rear part of the machine is released in an attempt to rotate the straw cutter to the side of the machine, switching is performed in conjunction with the release operation of the fixing mechanism. Since the plate always moves down, the switching plate does not come into contact with the straw transport chain when rotating the straw cutter, and carelessly rotate the switching plate while keeping it in the cutter work state. It is possible to reliably prevent the risk of damage.

An embodiment of the present invention will be described in detail with reference to the accompanying drawings.
1 is a combine, 2 is a traveling crawler, 3 is a machine body equipped with a thresher, and 4 is a wind-selecting chamber formed on the rear side of the thresher. Reference numeral 5 denotes a straw cutter provided on the rear portion of the machine body 3, and a plurality of cutting blades 6, 6 ... Are mounted in parallel on the rotary shaft 7. Above the straw cutter 5, threshing treatment is performed. The transport end portion of the straw transport chain 8 that transports the discharged straw faces. Reference numeral 9 denotes a vertically movable switching plate that opens and closes the straw input port 10 of the straw cutter 5, and the vertical movement mechanism 9a of the switching plate 9 has a rotating shaft 11 as shown in FIG. It is configured by connecting the link 12 provided at the front end to a lever 14 provided at a position near the seat 13 and swingable back and forth through a wire 15 inserted through an outer 15a. And lever 14
When is swung forward, the wire 15 is pulled and the switching plate 9 moves upward, the straw input port 10 opens, and the straw is guided into the straw cutter 5, and the lever 14 is moved. When the is swung backward, the wire 15 is loosened, the switching plate 9 is moved downward by its own weight, the straw input port 10 is closed, and the straw is discharged to the rear of the machine body 3 as it is, so that the discharge work is performed. It is configured.

As shown in FIG. 4, one end of the straw cutter 5 is pivotally supported by a support shaft 16 provided on one side of the rear end of the machine body 3, and an intermediate portion thereof is supported by a support shaft 16a having the same axis as the support shaft 16. It is supported by a rotatable stay 17 extending from the main body 3 and is rotatable toward the side of the machine body 3. A fixing mechanism 18 is provided at the other end of the straw cutter 5. That is, on the side surface of the straw cutter 5, a connecting metal fitting 19 is provided so as to project toward the machine body 3 side, and a receiving metal fitting 20 into which the connecting metal fitting 19 is inserted on the machine body 3 side and a fixed lever 21 that is vertically rotatable. Equipped with straw cutter 5
When the tool is pivotally set to the cutter working position on the rear part of the machine body 3, the connecting fitting 19 is inserted into the receiving fitting 20, and then the fixing lever 21 is rotated downward as shown in (a) of FIG. 7 (B). When it is moved, the locking body 22 formed by bending on the other end side of the fixed lever 21 is provided with a cutout groove 23a provided in the coupling fitting 19 and the receiving fitting 20, respectively.
The straw cutter 5 is fixed by being fitted into the 23b.

The rotation link 26 is provided on the side surface of the straw cutter 5 on the support shaft 16 side.
The wire 25 is pivotally attached, one end of the wire 25 is fixed via a spring 24, and the other end of the wire 25 is attached and fixed to the fixing lever 21. As shown in FIG. 5, one end of the outer 25a of the wire 25 is fixed to the lower end of the rotary link 26, and the other end is fixed to the fuselage side near the fixed lever 21. Further, one end of the outer 15a of the wire 15 constituting the vertical movement mechanism 9a is fixed to the upper end of the rotary link 26, and the other end of the outer 15a is fixed to the machine body side near the lever 14. Then, at the fixing release position in which the fixing lever 21 is rotated upward [position a in FIG. 7 (B)], the wire 25 is pulled out from the outer 25a by the fixing lever 21 by a, and the fixing position [FIG. In the position a)], the wire 25a is pulled out by b, which is longer than a. Then, as will be described later in detail, when the fixed lever 21 is moved from the fixed position to the fixed release position, the pulling amount of the wire 25 is reduced by b-a, and the wire 25 has a length of b-a in the installation route. It bends more by the amount corresponding to. The outer 25a is also bent along with the wire 25, but the end of the outer 25a on the side of the fixed lever 21 is fixed to the machine body and does not move, so the outer 25a is bent by contracting the end of the outer 25a on the turning link 25 side. It will be possible.

Therefore, if the switching plate 9 is in the raised position at this time, the switching plate 9 is rotated downward by its own weight, the link 12 pulls the wire 15, and the wire 15 and the outer 15a are integrally pulled out to rotate the rotary link 26. Is rotated to the position shown by the chain line in FIG. 5 and the switching plate 9 is lowered.

27 is a No. 2 reduction thrower installed in the wind selection chamber 4, 28,28
Is its cleaning port, 29 is a transmission pulley, 30 is a side cover, 31
Is a paddy floor formed on one side of the body 3, 32 is a stay 17
It is a cover that is attached to the paddle and covers the paddy receiving floor 31 when the straw cutter 5 is fixed.

FIG. 8 shows another embodiment, in which the fixing mechanism 33 provided on one side of the straw cutter 5 is moved up and down in conjunction with the fixing bolt 34 and the switching plate 9 to move the locking portion 35. It is composed of a stopper 36 that engages and disengages. At the locking position of the stopper 36, the switching plate 9
Moves up and the switching plate 9 moves down at the unlocked position.

In the above-described structure, when the fixing lever 21 is rotated downward and the straw cutter 5 is fixed to the rear portion of the machine body 3, the amount of pulling the wire 25 from the outer 25a by the fixing lever 21 is longer than a. Therefore, the amount of protrusion of the wire 25 from one end of the outer 25a fixed to the rotating link 26 is shortened correspondingly, and the rotating link 26 comes to the position shown by the solid line in FIG. That is, when the fixing lever 21 is rotated downward and the wire 25 is pulled, one end of the wire 25 is fixed to the side surface of the straw cutter 5 on the support shaft 16 side, so that the wire 25 that is bent in the installation path is bent. Is extended by the difference (b-a) in the amount of pulling, and accordingly, the outer 25a bent through the wire 25 is also extended. Here, since the other end of the outer 25a is fixed to the fuselage side near the fixed lever 21 and does not move, the extension moves to the opposite side of the outer 25a, that is, the direction in which the rotating link 26 is pushed out, and the rotating link 26 Is rotated clockwise, and the rotation link 26 is held and fixed at the position indicated by the solid line in FIG.

The outer end 15a of the wire 15 connecting the lever 14 and the link 12 is fixed in position at the upper end of the rotary link 26 and the fuselage side in the vicinity of the lever 14. If you pull, the link 12 rotates and the switching plate 9
Moves upwards and enters a cutter working state in which the straw is guided into the straw cutter 5, and if the wire 15 is loosened, the switching plate 9 moves downward by its own weight to close the straw input port 10 and leave the straw as it is. It is in the discharge work state where it is discharged to the rear of the aircraft.

On the other hand, if the fixing lever 21 is rotated upward and the fixing mechanism 18 is released, the straw cutter 5 can be smoothly rotated around the support shaft 16 while the intermediate portion is firmly supported by the stay 17. In addition, the cover 32 that covers the paddy floor 31 is also stayed 17
Since it rotates to the side of the machine body 3 at the same time, it is possible to easily perform maintenance and inspection work inside the wind selection chamber 4 in which the second reduction thrower 27 and the like are arranged from the rear of the machine body 3 which is wide open.

Then, when the straw cutter 5 is rotated, the switching plate 9
When the fixed lever 21 is rotated upward in the cutter working state in which the wire has moved upward, the amount of pulling of the wire 25 by the fixed lever 21 decreases by b-a in conjunction with this release operation, but one end of the wire 25 Since the wire 25 is fixed on the side of the straw cutter 5 and does not move, the wire 25 tends to bend more by an amount corresponding to the length b-a in the arrangement route. If the wire 25 is to be largely bent, the outer 25a is also to be largely bent to allow this bending. Here, since one end of the outer 25a is fixed to the body side near the fixed lever 21 and does not move, the outer 25a is bent by contracting the opposite rotation link 26 side (the rotation link 26 is rotated counterclockwise). Outer in the direction of rotation
The end of 25a on the side of the rotation link 26 moves, and the rotation link 26 is moved to the fifth position.
At the same time, the pushing force of the outer 25a for holding and fixing in the solid line state in the figure is released), and at the same time, the switching plate 9 in the raised position moves down around the pivot shaft 11 due to its own weight, and the link 12 pulls the wire 15. , The wire 15 and the outer 15a that are bent in the installation path move integrally and are pulled out (at this time, the wire 1
The outer 15a through which 5 is inserted extends only by the amount pulled out), and the rotation link 26 rotates counterclockwise to the position shown by the chain line in FIG.

Therefore, the straw cutter 5 with the switching plate 9 moved upward
It is possible to reliably prevent the risk of the switching plate 9 coming into contact with the straw conveying chain 8 and being damaged by rotating the.

Further, in the other embodiment, even if the fixing bolt 34 constituting the fixing mechanism 33 is loosened to release the fixing, the straw cutter 5 is rotated if the stopper 36 is locked to the locking portion 35. Since the switching plate 9 cannot be moved, and the switching plate 9 always moves downward when the stopper 36 is unlocked, the straw cutter 5 is rotated without carelessly moving the switching plate 9 upward. It doesn't move.

Effect of the Invention In summary, the present invention provides a straw cutter at the rear part of the machine body, and a vertically movable switching plate provided on the straw cutter opens and closes the straw throwing opening of the straw cutter to perform the cutter work and the straw. In the combine straw discharge cutter, which is configured to switch to the discharge work for discharging backward as a long straw, the straw cutter is pivotally attached to the aircraft so as to be rotatable toward the side of the aircraft, and the straw is removed. Since the fixing mechanism that fixes the cutter to the cutter working position on the rear of the machine is linked to the vertical movement mechanism of the switching plate, the switching plate is configured to move downwards in conjunction with the release operation of the fixing mechanism. Although the straw cutter provided on the side of the machine can be rotated to the side of the machine to facilitate maintenance and inspection work inside the threshing machine, etc. Up and down in conjunction Since the replacement plate automatically moves down, there is no need to inadvertently rotate the straw cutter while moving the switching plate up, and there is a risk that the switching plate will come into contact with the straw transport chain and be damaged. It has extremely useful practical effects such as prevention.

[Brief description of drawings]

FIG. 1 shows an embodiment of a switching device for a straw cutter according to the present invention. FIG. 1 is a side view of a combine with a part cut, FIG. 2 is a plan view of the same, and FIG. Figure,
FIG. 4 is a perspective view showing a state in which the straw cutter is rotated,
5 is a side view of the main part, FIG. 6 is a perspective view of the same as above, FIG. 7 (A) is an enlarged side view of a part of the main part, and FIG. 7 (B) is of FIG. 7 (A). XX sectional drawing and FIG. 8 are perspective views showing other embodiments. In the figure, 1 ... Combine, 3 ... Airframe, 9 ... Switching plate,
10: Straw insertion port, 18: Fixing mechanism.

Claims (1)

[Scope of utility model registration request] 1. A straw cutter is provided at the rear of the machine body, and a vertically movable switching plate provided on the straw cutter opens and closes the straw throwing opening of the straw cutter to keep the cutter work and straw as long straws. In the combine straw cutter that is switched to the discharge work that discharges to the rear, the straw cutter is pivotally attached to the aircraft so as to be rotatable toward the side of the aircraft, and the straw cutter is attached to the rear portion of the aircraft. Switching of the straw cutter characterized in that the fixing mechanism for fixing to the cutter working position and the vertical movement mechanism of the switching plate are interlockingly connected, and the switching plate is configured to move downward in conjunction with the release operation of the fixing mechanism. apparatus.