JPS6112190Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention provides a door that closes a cover opening for sending the waste straw to the outside in a non-shredded state when threshing waste straw is supplied to the shredding device. The present invention relates to a waste straw processing device for a thresher that is configured to automatically displace the waste straw in response to a straw supply blockage and send out the waste straw from a cover opening in a non-shredded state.

In a conventional device of this kind, the door is maintained in the cover opening closed position via a biasing mechanism, and
As the waste straw becomes clogged, the door is displaced against the biasing force of the biasing mechanism by the pressing force of the clogged straw itself acting in the opposite direction to the biasing direction of the biasing mechanism, and the straw is removed. The material is sent out from the cover opening in a non-shredded state.

However, in order to prevent the door from rattling due to vibrations of the machine or being opened due to the minute pressing force of the waste straw when the waste straw is being supplied to the shredding device, it is necessary to use a biasing mechanism. It is necessary to provide a device with a relatively large biasing force, and as a result, in order to displace the door due to the clogged waste straw, a relatively large pressing force that resists the biasing force is applied to the door itself. There was a problem that the door would be deformed and damaged, or the door would not open unless the waste straw clogging in the shredded portion progressed considerably.

The purpose of the present invention is to maintain the closed state of the door, which is automatically opened when the waste straw becomes clogged, without relying on the urging force of the urging mechanism and without rattling. To surely prevent a door from rattling regardless of the size of the door, and to immediately open the door when a straw jam occurs.

The characteristic configuration of the present invention for achieving the above object is that, when the threshed waste straw is supplied to the shredding device, a door that closes the cover opening for sending out the waste straw outside in a non-shredded state; In the waste straw processing device for a threshing machine configured to automatically displace the waste straw when the waste straw supply to the shredding device becomes clogged and send the waste straw to the outside through a cover opening in a non-shredded state, the door: The shredding apparatus is configured to be switchable between a first position in which the upper part of the shredding device is closed, a second position in which the cover opening is closed, and a third position in which the cover opening is kept open to the outside, and in the second position. A biasing mechanism that provides a stopper that comes into contact with the door to prevent the door from being opened due to the pressing action of the waste straw, and biases the stopper in a direction that allows the door to open. and a maintenance mechanism that maintains the stopper at a position that prevents the opening operation of the door against the biasing force of the biasing mechanism, and further includes a maintenance mechanism that maintains the stopper at a position that prevents the opening operation of the door, and further includes a maintenance mechanism that maintains the stopper in a position that prevents the door from opening. The present invention includes a switching mechanism that automatically releases the maintenance action of the maintenance mechanism and allows the door to operate toward the open side due to the biasing action of the biasing mechanism, and this configuration provides the following effects. .

That is, contrary to the conventional biasing mechanism, a biasing mechanism is used that biases the stopper in the direction of the door opening operation, and a maintenance mechanism is used that resists the biasing force and prevents the stopper from operating. The position of the stopper to prevent wobbling is reliably maintained by the biasing mechanism and the maintenance mechanism, and the direction of the biasing force applied by the biasing mechanism and the pressing force when the waste straw supply is clogged are controlled. The direction of action is the same as the direction of action, and there is no need to resist the biasing force to eject the straw, so the door can be opened immediately when straw clogs occur, preventing deformation, damage, and excessive damage to the door due to straw clogs. There is little risk of clogging.

Next, an embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2.

A shredding device 2 is provided at the rear of the threshing machine 1, and a dropper 3 is also provided, and the threshed waste straw is supplied to the shredding device 2 via a waste straw conveying device 4 to perform shredding discharge processing, or The supply to the shredding device 2 is blocked, and the straw is supplied to the dropper 3 through a cover opening 6 formed on the rear surface of the cover 5, and the straw is intermittently discharged in predetermined amounts in long straw without being shredded. The waste straw processing device of the threshing machine is configured.

The shredding device 2 is constructed by mounting two rotating shafts 8, 8 parallel to each other, each having a large number of blade bodies 7 arranged in parallel, and a feed chain drive shaft 9 and a rear rotating shaft 8. are connected to each other via a transmission belt 10 and are driven by a tension clutch 11 interposed therebetween.

A door 12 is pivotally connected to the cover 5 so as to be swingable up and down about the horizontal axis P so as to close the cover opening 6, and a switching lever (not shown) provided in the control section.
and a door 12 are interlocked and connected via a wire 13, and the door 12 is placed in a first position in which the upper part of the shredding device 2 is closed and the droplet is supplied to the dropper 3 through the cover opening 6 while following the upper surface thereof, and in a first position in which the dropper is supplied to the dropper 3 through the cover opening 6. 6 is closed and the shredding device 2 is supplied with the second posture.

The door 12 is configured to be able to swing outward from the cover opening 6 into a third position in which it is held open, and a stopper is provided on the top of the cover 5 to prevent the door 12 from swinging outward. The locking cover 14 is pivotally connected to the locking cover 14 so as to be swingable around the horizontal axis Q, and is always urged to swing toward the opening side of the cover opening 6 via a biasing mechanism 15, and the biasing mechanism 15 a rotary locking tool 16 that is configured to be removable from the locking cover 14 so as to maintain the locking cover 14 in a fixed position against the urging force of the locking cover 14; The solenoid 18 that maintains the engagement attitude with the locking cover 14 constitutes a maintenance mechanism 17 that maintains the locking cover 14 in a position that prevents the door 12 from opening.

The rotation locking tool 16 is configured to be driven and rotated by the excitation of the solenoid 18 to release the locking action on the locking cover 14, and is configured to release the locking action on the locking cover 14.
A pressure sensitive sensor 19 is provided in conjunction with the solenoid 18 to detect a blockage in the waste straw by the pressing force from the waste straw due to a blockage in the supply of waste straw to the shredding device 2.
With these sensors 19 and solenoid 18, the maintenance mechanism 17 is automatically switched to the deactivated state based on the detection of the supply clogging of waste straw, and
A switching mechanism allows the biasing mechanism 15 to open the locking cover 14, swings the door 12 outward from the cover opening 6, and sends out the waste straw to the outside through the cover opening 6 in a non-shredded state. It consists of 20.
In other words, the solenoid 18 is a part of the switching mechanism 20 and also a part of the maintenance mechanism 17.

The biasing mechanism 15 includes a rod 22 connected to the locking cover 14 at one end, which is slidably inserted into a bracket 21 connected to each of the left and right side walls of the cover 5, and a rod 22 connected to the locking cover 14 is inserted between the locking cover 14 and the bracket 21. A compression spring 23 is interposed in the rod 22, and a retaining piece 24 is attached to the free end.
In addition, a locking groove 25 is bored near the mounting portion of the retaining piece 24 of the rod 22, and upon detection of a clogged waste straw, the locking cover 14 and pressure sensor 19 are biased towards the open side of the cover opening 6. The rod 22 is fixed and fixed to the bracket 21 through the locking groove 25 so that the rod 22 is kept biased in a position that does not interfere with the transfer of waste straw, and when the locking cover 14 is in the open state, The structure is designed to prevent swinging due to such factors.

Swing arm 2 of the door 12 and the clutch 11
6 are interlocked and connected via a spring lever 27 and a spring 28, and the clutch 11 is in the engaged state only when the cover opening 6 is in the closed position to prevent the supply of waste straw to the shredding device 2. The clutch 11 is configured to be automatically disengaged when the door 12 is displaced either toward the side or toward the outside of the cover 5, and the biasing direction of the biasing force of the spring 28 is changed as the door 12 is displaced. When the cover opening 6 is closed, the cover 5 is slightly biased to swing inward, but is prevented from swinging by the wire 13, and on the other hand, when the waste straw is clogged, the locking cover 14 closes to the door. When the locking action on the door 12 is released, the direction of the biasing force is changed due to the slight displacement of the cover 5 outward due to the small pressing force of the waste straw acting on the door 12, and the clogged waste straw is not shredded. It is configured so that it can be quickly switched to the position where it is sent out through the cover opening 6 without changing.

In order to prevent the door 12 from being swung by the pressing force of the discharged straw, it is not limited to the swiveling locking cover 14 as in the above-described embodiment; Various structural modifications are possible, such as providing a rod that can move in and out by sliding between a position that abuts and prevents the rocking motion and a position that allows the rocking motion to be withdrawn from the rocking trajectory. The stopper 14 is collectively referred to as the stopper 14.

[Brief explanation of the drawing]

The drawings show an embodiment of the waste straw processing device for a threshing machine according to the present invention, and FIG. 1 is a partially cutaway side view of the main parts of a combine harvester, and FIG. 2 is an enlarged side view of the main parts. 2... Shredding device, 6... Cover opening, 12...
Door, 14... Stopper, 17... Maintenance mechanism, 2
0...Switching mechanism.

Claims (1)

[Scope of utility model registration request] When threshing waste straw is being supplied to the shredding device 2, the door 12 that closes the cover opening 6 for sending the waste straw outside in a non-shredded state is closed when the waste straw supply to the shredding device 2 is clogged. In a threshing machine waste straw processing device configured to automatically displace waste straw and send out the waste straw to the outside through a cover opening 6 in a non-shredded state, the door 12 is closed off to the upper part of the shredding device 2. a first posture, and a second posture in which the cover opening 6 is closed.
and a third posture in which the cover opening 6 is held open outward, and
A stopper 14 is provided that comes into contact with the door 12 in the second position to prevent the door 12 from being opened by the pressing action of the waste straw.
4, a biasing mechanism 15 biases the stopper 14 in a direction that allows the opening operation of the door 12;
The shredding device 2 is further provided with a maintenance mechanism 17 for maintaining the shredding device 4 in a position that prevents the opening operation of the door 12.
The maintenance mechanism 1
A straw removing straw for a thresher is provided with a switching mechanism 20 that automatically releases the maintenance action of 7 and allows the door 12 to operate toward the open side by the urging action of the urging mechanism 15. Processing equipment.