JPS5913792Y2 - Straw removal route switching mechanism for combine harvesters, etc. - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a straw removal route switching mechanism for a combine harvester or the like.

When sending waste straw threshed by a combine harvester etc. to a cutter mechanism, if the amount of waste straw supplied is constant, there will be little trouble with the cutter mechanism, but if the waste straw is supplied intermittently or As the amount of straw supplied increases, various problems such as clogging of the cutter occur if the straw supply port to the cutter mechanism remains constant.

Therefore, in order to prevent such troubles, methods have been taken such as automatically operating the switching plate of the straw removal route and allowing the removal straw to fall uncut into the rear culm collection mechanism. In this case, in order to resume the cutting operation, it is necessary to switch the cutting plates, making it difficult to continuously cut the waste straw.

Therefore, the present invention uses a simple mechanism to rotate the switching plate itself according to the amount of straw supplied to the cutter mechanism, adjust the width of the straw supply opening to the cutter mechanism, and temporarily supply straw to the cutter mechanism. If the conveyed amount increases intermittently and an amount of waste straw that cannot be supplied to the cutter mechanism is sent, the switching plate is rotated further and the straw is removed into the space formed behind the switching plate. While the straw is temporarily accumulated, when the conveyed amount decreases and the pressing force of the waste straw against the switching plate decreases, the accumulated waste straw is transferred to the cutter mechanism by the elastic force provided on the back of the switching plate. By dropping and cutting,
The purpose is to prevent clogging of the cutter mechanism and enable continuous cutting work in the field.

Hereinafter, details of the embodiments shown in the drawings will be explained.

Reference numeral 1 denotes an endless conveyance chain that conveys waste straw that has been threshed by a combine harvester or the like to a culm collection member 3.A conveyance rail 2 of the conveyance chain is disposed up to the middle of the conveyance chain 1, and the conveyance rail 2 A straw feeder is provided at the feed end of the cutter mechanism.

Further, a cutter mechanism A is formed below the supply Roy.

The cutter mechanism A has a rotating shaft 4 that rotates at high speed and a rotating shaft 5 that rotates at low speed, which are mounted parallel to the cutter frame 6, and a disc blade 7 is mounted on the rotating shaft 4 that rotates at high speed and rotates at low speed. A large number of star foil blades 8 are arranged on the rotating shaft 5 at opposing positions and at predetermined cutting length intervals, and each blade is rotated inward to cut the waste straw. An endless belt 11 is loosely suspended between a pulley 9 provided at the end of the rotating shaft 4 that rotates at high speed and a drive wheel 10. 12 is approaching and separating freely.

Note that 13 is a cut straw scattering prevention plate provided below the cutter frame 6.

Further, a straw removal guide table 14 is provided at one end of the straw removal supply system of the cutter mechanism A closer to the combine harvester, and at the other end, the straw removal guide table 14 is mounted on a shaft at the lower end of a safety cover 15 surrounding the conveyance chain 1. A rotating shaft 17 having a switching lever 16 fixed to the shaft end for opening and closing the switching plate is mounted on the shaft.

At both ends of this rotation shaft 17, frames 19.19' having a planar shape of "-" and one end of "-" shaped frames 19.19' are arranged so that they face each other with the conveyance chain 1 as a boundary.
The other ends of the switching plates 18 and 18' are fixed symmetrically to each other, and the upper ends of the switching plates 18 and 18' for closing the straw supply roy are pivotally supported on the side of the frame perpendicular to the direction of movement of the combine. The lower ends of the switching plates 18 and 18' are placed on the upper surface of the rotating shaft 17.

Note that the switching plate 18, 18' does not come into contact with the conveying chain 1 when it is rotated upward about the rotation shaft 17 by operating the switching lever 16 to release the straw supply to the cutter mechanism A. It is a hot topic that they are arranged in this way.

Further, the straw removal guide plates 20, 20' each having an angular cross-section are provided on the straw removal contact side of the switching plates 18, 18', and the front surface of the straw removal guide plates 20, 20' By rotating 18.18' itself, it protrudes forward from the frame 19°19' to adjust the width of the straw supply roy.

Further, when the straw supplying Roy to the cutter mechanism A is opened, the switching plate 18, 18' rotates backward using one end as a fulcrum by the pressing force of the straw being conveyed, and adjusts the conveyance amount of the straw. Accordingly, the protrusion of the straw removal guide plate 20, 20' into the straw supply roy is adjusted, thereby adjusting the width of the straw removal roy and temporarily or intermittently reducing the conveyance amount. increases,
When straw cannot be supplied to the cutter mechanism A, the switching plate 18, 18' rotates more rearward and the switching plate 1
The conveyor chain 1 temporarily stores waste straw in the space R that was blocked off by 8.18', but when the switching plate 18°18' rotates beyond a certain level due to the pressing force of the waste straw, One end of the elastic rod 21.21' is fixed to the back surface of the switching plate 18.18', and the other end of the elastic rod 21.21' is attached to the safety cover 15.
The switching plates 18 and 18' are formed so as to apply a pressing force to the switching plates 18 and 18' relative to the pressing force of the straw.

The elastic rods 21, 21' also function as conveying members for conveying the waste straw to the culm collecting member 3 when the straw supplying rod of the cutter mechanism A is blocked by the switching plate 18, 18'. A switching plate 18, 18' is arranged so as to run in the direction of extension of the conveyor rail 2 and parallel to the upper conveyor chain 1 in a state that blocks the straw supply roy.

Furthermore, a switching lever 16 is provided at the shaft end of the rotation shaft 17 described above.
In addition, the middle part of the connecting arm 22 is fixed, and one end of the connecting arm 22 and the collecting member 3 provided outside and below the cutter frame 6 are connected by a spring 23, and when the switching lever 16 is operated. The switching plate 18, 18' is connected to the collecting culm member 3.
When opening the straw passage to the culm collecting member 3 in conjunction with the connecting arm 22, the culm collecting member 3 assumes the culm collecting attitude, and the opening/closing cover 24
It is formed to collect waste straw that falls from the culm.

Further, one end of an arm 25 is connected to the other end of the connecting arm 22 via a connecting rod 26. It is formed so that it can be pushed open against the

Since the present invention is constructed as described above, its operation will be explained. When sending the waste straw transported by the transport chain 1 to the cutter mechanism A, the switching lever 16 is operated and the rotation axis Switching plate 18 with 17 as the fulcrum.
18' is rotated upward to feed the waste straw to the cutter mechanism A, but when a large amount of waste straw is fed in, the switching plates 18, 18' themselves change due to the pressing force of the waste straw. It rotates backward using one end as a fulcrum, thereby adjusting the protrusion of the straw removal guide plates 20, 20' to the straw supply roy, which widens the straw supply roy and allows a large amount of waste straw to fall into the cutter mechanism A. let

Furthermore, when more waste straw is transported to the point where all the waste straw cannot be supplied to the cutter mechanism A, the switching plate 18, 18' is further rotated rearward due to the pressing force of the waste straw,
Until now, the waste straw that cannot be fed to the cutter mechanism A has been transferred to the switching plate 1.
Switching plate 18.18' that was blocked by 8.18'
A space R at the rear of the cutter mechanism A is opened, and waste straw is temporarily accumulated in the space R by the conveyor chain 1, thereby preventing the cutter mechanism A from becoming clogged.

Incidentally, when the switching plate 18.18' is rotated more rearward due to the straw removal, the other end of the elastic rod 21.21' provided on the back side of the switching plate 18.18' moves to the safety cover 15.
However, since the elastic rods 21, 21' are made of an elastic body, when the pressing force of the upper straw is applied, the switching plate 18, 18' opens further rearward due to its elasticity. This makes the straw supplying area wider.

In addition, when the amount of straw to be conveyed decreases, the switching plates 18, 1
8' itself rotates to return to its original position due to its own weight, and the other ends of the elastic rods 21 and 21' close to the safety cover 15.
Due to its elastic force, it rotates forward from the point where it is pressed into contact with the cutter mechanism A, and the waste straw accumulated in the space R is dropped into the cutter mechanism A by the rotational force, and the uncut waste straw is removed from the field during the cutting operation. This allows cutting work to be carried out without causing any scattering.

As shown in FIG. 2, when the switching lever 16 is operated, the switching plate 18, 18' closes the straw supply roy to the cutter mechanism A and forms the straw passage to the culm collection member 3, and the rotation shaft 17 is closed. The arm 25 pushes open the opening/closing cover 24 outward in conjunction with the connecting arm 22 fixed to the culm collecting member 3 as well.

As a result, waste straw processed by a combine harvester or the like is conveyed by the conveyor chain 1, conveyed on the upper surface of the elastic rods 21° 21', falls onto the culm collecting member 3, and is delivered to the field in fixed amounts by the action of the spring 23. Let the waste straw fall.

At this time, since the elastic rods 21 and 21' are made of an elastic body, the amount of conveyed straw acts downward when the amount is large, and returns automatically when the amount is small, so that it reliably conveys the waste straw to the culm collecting member 3. do.

In this way, according to the present invention, the switching plate itself rotates in accordance with the increase or decrease in the amount of straw to be conveyed, making it possible to adjust the width of the straw supply opening to the cutter mechanism and increasing the amount of straw to be conveyed. However, if not all of the straw can be supplied to the cutter mechanism, the pressing force of the straw will cause the switching plate to rotate further backwards, temporarily transferring the straw to the space behind the switching plate that was previously blocked by the switching plate. When the amount of straw accumulated and conveyed decreases, the switching plate is rotated forward by the elastic force of the elastic rod, and the straw accumulated in the space is dropped into the cutter mechanism, so that the cutter mechanism This allows continuous cutting work in the field without clogging.

[Brief explanation of drawings]

FIG. 1 is a plan sectional view showing the present invention, FIG. 2, FIG. 3 is a top side view, FIG. 4 is a perspective view showing the switching plate, and FIG.
It is a side sectional view of a switching board. 1... Conveyance chain, 2... Conveyance rail, 3... Culm gathering member, 15... Safety cover, 16... Switching lever , 17...
Rotation axis, 18.18'...Switching plate, 19.19
``Shape and frame of shape, 20.20''
...Straw guide plate, 21, 21'...Elastic rod, A...Cutter mechanism, A...Straw supply port, R... ...Space behind the switching board.

Claims (1)

[Scope of utility model registration request] A conveyor rail of a conveyor chain that conveys waste straw processed by the threshing machine to a culm collection mechanism provided at the rear of the threshing machine is provided halfway up the conveyor chain, and a cutter mechanism is provided at the sending end of the conveyor rail. The upper part of the waste straw supply port is facing, and a switching plate is disposed on the waste straw supply port to open and close the waste straw supply port by rotating a rotating shaft, and the switching plate is opened and closed. In this combine harvester, which can selectively switch between the straw removal route to the cutter mechanism and the culm collection mechanism route, the rotating shaft has an H-shaped frame 19.19' shaped frame at both ends of the rotating shaft. The other ends of the frame are fixed symmetrically so that one end faces each other across the conveyor chain, and a switching plate 18.
The upper end of 18' is rotatably supported, and the lower end of this switching plate is mounted on the upper surface of the rotating shaft, and the straw is guided toward the cutter mechanism on the front surface of both cutting plates. A straw removal guide plate 20, 20' with an H-shaped cross section is provided, and an elastic rod is attached to the back side of both cutting plates so as to be able to come into contact with the inner surface of the safety cover provided above the conveyor chain. Straw removal route switching mechanism for combine harvesters, etc.