JPH0449878Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention is a straw cutter device that is attached to the rear of a combine harvester, cuts straw after threshing, and releases it into the field. This invention relates to a switching device.

(b) Prior Art Conventionally, there has been a known technology in which a straw cutting device is used as a switching cover for switching between cutting and non-cutting, and a pinching guide rod, and also in conjunction with an upper opening/closing cover. For example, there is a technique described in Japanese Utility Model Publication No. 17154/1983.

There is also a known technology in which the upper opening/closing cover and the straw removal cutting device are linked to each other.

For example, there is a technique described in Japanese Unexamined Patent Publication No. 54-66247.

(c) Problems to be solved by the invention However, in the technology described in Publication of Utility Model Publication No. 59-17154, it is necessary to use the pincer guide rod as a switching cover and rotate it up and down significantly.
This resulted in a problem in that the switching operation force became large and reliable switching was not possible.

Furthermore, in JP-A No. 54-66247, the power connection/disconnection of the straw cutting device and the opening/closing of the upper opening/closing cover are linked to the culm collection device, but the culm collecting device is not linked to the pinching guide rod. Each time, the operator had to put his hand inside the cutter cover and pull out the pincer guide rod.

The present invention solves the problems of the prior art.

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

An upper opening/closing cover 2 equipped with a switching handle 2a is pivotally supported at the rear opening of a cutter cover 27 of the straw cutting device, and the upper opening/closing cover 2 and the switching cover 1 are connected via an opening/closing link 4. The switching cover 1 slides back and forth along a "〓"-shaped guide groove 10 that is opened in the cutter cover side plate 32 and has a vertical front part and a horizontal rear part, and opens and closes the entrance to the rotary blade of the cutter. In conjunction with the forward and backward movement of the switching cover 1,
The pinching guide rod 5 of the straw removal chain A is configured to extend and contract back and forth.

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

Figure 1 is a side cross-sectional view of the straw cutter device when it is not in operation, Figure 2 is a side cross-sectional view while it is in cutting operation,
Fig. 3 is a rear perspective view during cutting operation, Fig. 4 is a rear perspective view during non-operation, Fig. 5 is a side perspective view during cutting operation, and Fig. 6 is a side perspective view during non-operation. Figure 7 is a front perspective view of the pincer guide rod during non-cutting work, Figure 8 is a front perspective view of the same during cutting work, Figure 9 is a front sectional view of the switching cover 1 and interlocking link 7, and Figure 10. is also a side sectional view.

In FIGS. 1 and 2, the straw removal cutter device of the present invention has a straw removal guide rotating body 2 made of an elastic body at the upper part.
1, and a high-speed rotating blade 23 and a low-speed rotating blade 2 below.
2 is used as a cutter device with interlocking disc blades.

Then, the arc-shaped switching cover 1 is rotated in an arc on the upper surface of the straw removal guiding rotary body 21, and is opened during cutting.
Closed when not disconnected. Furthermore, cutter cover 2
An upper opening/closing cover 2 is provided at the rear opening of 7, and this upper opening/closing cover 2 is an opening/closing cover for the exit opening to the converging device or binding device, and is closed during cutting work and opened when not cutting. There is.

These two are linked, and the cutter cover 2
If you open and close the cover 2 by grasping the switching handle 2a of the upper opening/closing cover 2, the switching cover 1 will automatically move to the cutter cover via the opening/closing link 4 without inserting your hand into the opening/closing link 4 to move the switching cover. It opens and closes the entrance to the rotary blade of the cutter by moving in the horizontal direction along a square-shaped guide groove 10 which is opened in the side plate 32 and whose front part is vertical and whose rear part is horizontal.

Furthermore, the upper opening/closing cover 2 has an interlocking link 20
The rotating shaft 29 is rotated through the stock pressing member 1.
9 is rotated up and down.

That is, the upper opening/closing cover 2 is in the open state and the upper rotation is released while the straw is being sent to the collection device or the bundling device. When the upper opening/closing cover 2 is in the closed state and the straw is being fed into the straw cutter, the stock head pressing member 19 is pressed downward, and the stock head goes in front, thereby controlling the straw that goes too far.

The pincer guide rod 5, which is the main part of the present invention, has its terminal end and the rear end of the switching cover 1 connected to the arm 6,
They are connected via a rod 7b and a link 7a.

Support shafts 9 and 8 project laterally from both front and rear ends of the switching cover 1, and are slidably inserted into guide grooves 10 provided on the inner surface of the cutter cover side plates.

Reference numeral 11 denotes a support arm, which is pivotally supported on the inner surface of the cutter cover side plate 32, and a pin 12 protruding from the intermediate portion thereof is engaged with an arcuate elongated hole 13 formed in the side plate. One end of the support arm 11 has a long hole 1.
4 is perforated, and the support shaft 8 is inserted through the elongated hole 14.

A pin 16 is made to protrude inward from the other end 15 of the support arm 11, and a fulcrum cross spring 18 is tensioned between it and a spring seat 17 provided inwardly on the cutter cover side plate 32. .

The pin 12 crosses over the fulcrum and enters the arcuate long hole 1.
Switching cover 1 when moved to the right in side view of 3.
The cutter is biased to the cutter working state, and when moved to the left, the cutter is biased to the cutter non-working state.

I will explain how to store and draw out the pincer guide rod 5.

The tip of the pinching guide rod 5 is housed inside the pipe of the fixed guide rod 5a, and this fixed guide rod 5a
It is configured to be pulled out and stored.

The rear end of the pincer guide rod 5 is pivotally supported by a rotating arm 6 via a spring plate 5c. The rotating direction of the rotating arm 6 is approximately along the protruding direction of the straw removal chain A, and the moving direction for storing and drawing out the pinching guide rod 5 is shifted from the direction of the fitting hole of the fixed guide rod 5a. , so that it does not engage when being stored or drawn out.

Further, the interlocking link 7a is connected to the support shaft 8 of the switching cover 1.
The switching cover 1 rotates in an arc, so that the link 7a and the rod 7
It is absorbed by the elasticity of b so that it does not affect the rotating arm 6.

Therefore, since the rotating arm 6 rotates horizontally around the rotating shaft 6a, the pincer guide rod 5 also moves horizontally back and forth, and is housed in or pulled out within the fixed guide rod 5a.

30 is a cutter frame.

Further, 24 is a focusing device, 25 is a focusing guide plate, 2
Reference numeral 6 denotes a focusing guide rod, as shown in FIG. 1, which is protruded during focusing work and folded during cutter work.

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

Firstly, in the conventional technology described in Japanese Utility Model Publication No. 59-17154, the pincer guide rod also serves as a switching cover, and it is necessary to rotate it up and down considerably, so the switching operation is required. This caused a problem in that the amount of noise increased and reliable switching was not possible.

In contrast, in the present invention, the switching cover and the pinching guide rod 5 have separate structures, and both slide in the horizontal direction, making it possible to switch between cutting and non-cutting, so the operation required for switching is Now I can do it easily.

Second, in the prior art Japanese Patent Application Laid-Open No. 54-66247, the power connection/disconnection of the straw cutting device, the opening/closing of the upper opening/closing cover, and the culm collecting device are linked.
Since there was no linkage with the pincer guide rod, the operator had to put his hand inside the cutter cover and pull out the pincer guide rod each time.

The present invention is configured so that the pincer guide rod 5 can be extended and contracted back and forth at the same time in conjunction with switching between the upper opening/closing cover 2 and the switching cover 1, so the operator does not have to put his hand inside the cutter cover 27. It was gone.

Thirdly, since the switching handle 2a of the upper opening/closing cover 2 is provided to enable switching between cutting and non-cutting, there is no need to provide a separate switching lever, and switching can be performed with reliable operation. It was.

[Brief explanation of the drawing]

FIG. 1 is a sectional side view of the straw cutter device when it is not in operation. FIG. 2 is a side cross-sectional view during the cutting operation.
FIG. 3 is a rear perspective view during cutting work. FIG. 4 is a rear perspective view of the non-working state. FIG. 5 is a side perspective view during cutting work. FIG. 6 is a side perspective view of the non-working state. FIG. 7 is a front perspective view of the pincer guide rod during non-cutting work. FIG. 8 is a front perspective view during cutting work. FIG. 9 is a front sectional view of the switching cover 1 and the interlocking link 7. FIG. 10 is a side sectional view as well. A... Straw removal chain, 1... Switching cover, 2...
...Top opening/closing cover, 2a...Switching handle, 5...Pinch guide rod, 27...Cutter cover, 32...
Cutter cover side plate.

Claims (1)

[Scope of utility model registration request] An upper opening/closing cover 2 equipped with a switching handle 2a is pivotally supported at the rear opening of a cutter cover 27 of the straw cutting device, and the upper opening/closing cover 2 and the switching cover 1 are connected via an opening/closing link 4. The switching cover 1 slides back and forth along a "〓"-shaped guide groove 10 that is opened in the cutter cover side plate 32 and has a vertical front part and a horizontal rear part, and opens and closes the entrance to the rotary blade of the cutter. In conjunction with the forward and backward movement of the switching cover 1,
A straw removal cutter device for a combine harvester, characterized in that a pinching guide rod 5 of a straw removal chain A is configured to extend and contract back and forth.