JPH0444044Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an opening/closing structure for a grain conveyor receiving gutter in a threshing machine such as a combine harvester or a harvester.

[Problems to be solved by the prior art and the invention] In general, in this type of threshing machine, spiral conveyors for conveying the first and second grains that have been sorted in the sorting room are arranged side by side at the bottom. Therefore, it is necessary that the receiving gutter portions of these conveying bodies can be opened and closed for inspection and maintenance of the conveying bodies, cleaning of the receiving gutter portions, and the like. Therefore, conventionally, as shown in, for example, Japanese Utility Model Application Publication No. 57-117963, there is a system in which both receiving gutter sections are simultaneously opened and closed by switching the operating lever.
However, this device has the disadvantage that since the operating lever is disposed in the middle between the two transport bodies, it is actually extremely difficult to operate because members such as the transmission mechanism of the sorting section get in the way. Therefore, it is conceivable to extend the operating lever in the front and back direction so that it can be opened and closed by pushing and pulling, but in this case, in order to seal the receiving gutter part, the receiving gutter part is Since it is biased in the closing direction,
If an attempt is made to press the operating lever against the lever receiving member by using the biasing force of the bullet in order to eliminate play in the operating lever during closing, there is a drawback that the receiving gutter portion will not be fully closed. For this reason, a new drawback arises in that the operating lever must be left in a loose state or a biasing member for fixing the operating lever is required separately.

[Means for solving the problem] In view of the above-mentioned circumstances, the present invention was created with the aim of providing an opening/closing structure for the grain carrier receiving gutter in a threshing machine that can eliminate these drawbacks. In a threshing machine, the bottom of grain conveyors arranged in parallel at the bottom of a sorting chamber is formed by receiving troughs that can be opened and closed. Therefore, an actuating body configured to open and close the receiving gutter section is provided, and the opening and closing swing of the actuating body is performed by pushing and pulling the operating lever. A lock mechanism is provided that can be switched between a lock state in which the push operation that opens the receiving gutter section is restricted and a release state in which this is permitted. A bullet is installed on the closed side of the receiving gutter to push the operating lever and urge it toward the operating side, and on the operating body side, it is separated from the tip of the operating lever when the operating lever is in the locked state, and is not operated when the operating lever is in the unlocked state. It is characterized by providing a receiving member against which the tip of the lever comes into contact.

The present invention uses this configuration to ensure that the receiving gutter is closed, but
Furthermore, it is possible to eliminate play in the operating lever.

[Example] Next, an example of the present invention will be described based on the drawings. In the drawing, reference numeral 1 denotes a threshing machine, which threshes a group of stalks which are conveyed between a feed chain 2 and a clamping rail 3 using a handling cylinder 5 in a handling chamber 4. The threshed waste culm is transported by the waste culm transport chain 6, subjected to post-processing such as being shredded by the waste culm cutter 7, and then discharged outside the machine. Items treated as such,
In the sorting room, the particles are subjected to a sorting action by the sorting wind generated by the winnowing machine 8 and the suction fan 9;
The first item is collected and conveyed by the first spiral conveyor 10 and then stored in a storage bag (not shown), and the second item is collected and conveyed by the second spiral conveyor 11 and then transferred to the second thrower. 12, it is returned to the handling room 4 again and undergoes the sorting process again, and dust such as straw is discharged outside the machine through the dust outlet 14.
The threshing process in this manner is conventional. In addition, in the figure, 15 is an oscillating sorter, 16
1 is a swing rack, 17 is a main sorting air passage, 18 is a sub-sorting air passage, 19 is a flow plate, and 20 is a side plate of the threshing machine.

On the other hand, 21 is a receiving gutter portion of the second spiral conveyor 11 on the front side (rear side in this embodiment), and a pin shaft 21b is integrally attached to a bracket 21a protruding from the bottom surface of the receiving gutter portion 21. The pin shaft 21b is engaged with a locking groove 22b formed at the upper end of an operating arm 22 whose lower end is swingably supported around a support shaft 22a. This operating arm 22
A bracket 23 is rotatably supported in the middle part of the bracket 23 via a pin shaft (corresponding to the receiving member of the present invention) 22c, and is hinged downwardly by a butterfly plate 26a. The most spiral conveyor 1
A rear end portion of an operating rod 27 whose front end portion is connected to the receiving gutter portion 26 for zero is integrally provided. Reference numeral 24 denotes an operating lever that passes through the support fitting 28 so that it can be pushed and pulled in the front and rear directions. It's getting old.
And the operating lever 24 passing through the bracket 23
A bullet receiver 25a and a support fitting 28 provided at the front end of the
A bomb 25 is interposed in a compressed manner between the rear end portion of the bullet and the rear end portion of the bullet. Further, the operating lever 24 is provided with a substantially L-shaped stopper 24a, and a stopper receiver 28a is integrally provided on the rear surface of the support fitting 28. When the operating lever 24 is in a state where its grip portion 24b faces downward (locked position), the stopper 24a contacts the support fitting 28 in a state close to and opposite to the lower edge of the stopper receiver 28a, Further forward pushing movement of the operating lever 24 is restricted by locking, thereby forming a locking mechanism. In this locked position, the front end of the operating lever 24 faces the pin shaft 22c with a small distance therebetween.
The actuating arm 24 is always pressed in the direction B by the urging force of the projectile 25, and the actuating arm 24 is urged toward the closing side by the urging force of the bomb 25. It is becoming more and more popular.

Also, by pulling the operating lever 24 slightly backward against the ammunition 25, the stopper 24a is moved to the stopper receiver 2.
When the grip part 24b is turned to the side (released position) by operating it in the A direction with the stopper 24a removed from the support fitting 28, the stopper 24a is located inside the right edge of the support fitting 28. , the operating lever 24 can be pushed and pulled in the B direction (back and forth direction). In this state, the front end of the operating lever 24 and the pin shaft 22c are in elastic contact with each other due to the biasing force of the ammunition 25, and when the operating lever 24 is operated in the direction B, the operating arm 24
swings forward, thereby both receiving gutter parts 21,
26 is configured to be open.

In the embodiment of the present invention configured as described above, when the operating lever 24 is inserted into the guide hole 23a on the side where the stopper 24a is located on the stopper receiver 23b, the operating lever 24 is not operated by the biasing force of the ammunition 25. The lever 24 is biased toward the stopper 24a and maintained in this state, while the receiving gutter portions 21 and 26 are biased toward the closing side and maintained in this state. become.

On the other hand, cleaning of the receiving gutter parts 21 and 26 and cleaning of the conveyor 1
To perform inspection and maintenance of 0 and 11, press the operation lever 24.
If you pull it slightly toward you against the bullet 25 to remove it from the stopper 24a and the stopper receiver 28a, and in this state rotate the operating lever 24 in the direction A and push it forward, the front end of the operating lever 24 will be attached to the pin shaft 22c. By moving in the B direction while being pressed into contact with each other, both receiving gutter portions 21 and 26 are opened. After inspection and maintenance are completed, use the operating lever 24.
is pulled back in the anti-B direction by the opposite operation to that described above, and at the same time rotated in the anti-A direction to bring it into the locked state.

In this way, in the present invention, the operating lever 24
The receiving gutter portions 21, 26 can be opened and closed by pushing and pulling the receiving gutter portions 21, 26.
26 is in the closed state, the ammunition 25
Since the opening is always held toward the closed side under the biasing force of
Moreover, in this case, the receiving gutter sections 21 and 26 and the operating lever 24 side are connected in a state where they are urged in opposite directions by the ammunition 25, so that the receiving gutter sections 21 and 26 are closed. This makes it possible to elastically lock the operating lever 24 while maintaining a strong closed elastic state without any loss of elasticity to the side, thereby ensuring that the operating lever 24 does not wobble. This can be prevented. Furthermore, when pushing and pulling the operating lever 24 in the release position, the push-pull operation is performed without the biasing force of the projectile 25 being directly applied, so even if the push-pull operation goes beyond the fulcrum, This means that the lever operation can be done easily without the burden of being heavy.

It goes without saying that the present invention is not limited to the above-mentioned embodiment, and the locking mechanism can be further constructed as shown in FIG. That is, in this case, the stopper 2 provided on the operating lever 24
4a is pin-shaped, and the support fitting 28 has a guide hole 28b through which the stopper 24a can be inserted when the operating lever 24 is in the locked position and the released position, and the guide hole 28b is formed so that the operating lever 24 is in the locked position. A stopper receiver 28c is provided to receive the stopper 24a when the operating lever 24 is in the locked position. 28c receives the stopper 24a fitted into the guide 28b, thereby restricting and locking the operating lever 24 from further forward movement.

[Operation and Effect] In summary, since the present invention is constructed as described above, the receiving trough can be opened and closed by pushing and pulling the operating lever, and can be opened and closed by pushing and pulling the operating lever. Although it is designed to be operable, the receiving gutter is always biased toward the closed state by the biasing force of the bullet provided between the operating body and the operating lever. Moreover, in this case,
The tip of the operating lever and the receiving member are separated in a locked state, and the ammunition is biased in the opposite direction of action from the operating body, which is biased toward the operating side by pushing the operating lever. Therefore, even if the operating lever can be elastically biased to eliminate looseness and be reliably maintained in the locked state, the elastic force that biases the receiving gutter side toward the closing side will not be impaired in any way. Therefore, the closing operation of the receiving gutter can be ensured, and the inadvertent opening of the receiving gutter can be prevented.

[Brief explanation of the drawing]

The drawings show an embodiment of the opening/closing structure of the grain conveyor receiving gutter in the threshing machine according to the present invention, in which Fig. 1 is a cross-sectional side view of the threshing machine, and Fig. 2 is a cross-sectional side view of the threshing machine equipped with the threshing machine. FIG. 3 is a cross-sectional side view of the receiving gutter portion, FIG. 4 is a cross-sectional plan view of the same as above, and FIG. 5 is a cross-sectional side view of the receiving gutter portion showing another example. In the figure, 10 and 11 are grain conveyors, 21 and 26 are receiving gutter parts, 22 is an operating body, 22c is a pin shaft, and 24
25 is a control lever, and 25 is a bullet.

Claims (1)

[Scope of utility model registration request] In a threshing machine, the bottom of grain conveyors arranged in parallel at the bottom of the sorting chamber is formed by receiving gutter sections that can be opened and closed. An actuating body configured to open and close is provided, and the opening and closing swing of the actuating body is performed by pushing and pulling an operating lever. A lock mechanism is provided between the operating body and the operating lever, which can be switched between a locked state in which the push operation that opens the gutter is restricted and a released state in which this is permitted. On the side, there is a bullet that presses the operating lever and urges it to the operating side, and on the operating body side, it separates from the tip of the operating lever when the operating lever is in the locked state, and comes into contact with the tip of the operating lever when it is in the unlocked state. An opening/closing structure for a receiving gutter portion of a grain conveyor in a threshing machine, characterized in that a receiving member is provided.