JPH0869A - Safety structure of cutter device of combine harvester - Google Patents

Abstract

PURPOSE:To improve the safety of a cutter apparatus and to enable the orderly transfer of waste culms to improve the post-treatment accuracy. CONSTITUTION:A waste culm switching plate 11 for opening and closing a waste culm throwing port 8a of a cutter apparatus 8 is provided with a notch 11b to prevent the interference of the switching plate and a waste-culm feed chain. A safety cover 13 to open or close the notch is placed on the lower face of the culm switching plate 11 and automatically opened or closed based on the change in the position of the cover relative to a leaf spring 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety structure for a cutter device in a combine equipped with a cutter device for cutting culms.

[0002]

BACKGROUND OF THE INVENTION Generally,
Among the combine harvesters of this kind, there are a non-cutter posture that closes the culm insertion port of the cutter device below the terminal end of the culm carrier, and a cutter posture that rotates upward from the posture to open the culm insertion port. There is one that has a culvert switching plate that can be freely transformed. However, in the case where the culm switching plate is arranged near the lower part of the culm carrier, it is necessary to largely cut out a part of the culm switching plate in order to avoid interference with the culm carrier. Even if the drainage switching plate is used to block the drainage input port, a part of it will always be open, which is not preferable for safety.In addition, during the non-cutter work, the drainage can be caught in the notch. Therefore, there is also a problem that the post-processing accuracy is deteriorated due to disturbance of the conveying posture of the culm. Further, the cutter device is rotatable rearward of the machine body with one side as a fulcrum,
There are some that make maintenance of the rear part of the machine and the cutter device easier, but if the front part and the bottom part of the cutter device are opened when the cutter device is rotated backward, the cutter device will turn freely by wind etc. It is desirable to take some kind of safety measures on the assumption that it will operate.

[0003]

SUMMARY OF THE INVENTION The present invention was conceived with the object of providing a safety structure for a cutter device in a combine, which can eliminate these drawbacks in view of the above circumstances. Below the end of the culm carrier, a non-cutter posture that closes the culm input port of the cutter device and a cutter posture that rotates upward from that position to open the culm input port can be transformed freely. In providing the culm switching plate, the combine is formed by forming a cutout portion in the culm switching plate to avoid interference with the culm carrier.
The combine is provided with a safety lid capable of opening and closing the cutout portion from the lower surface side of the culmination switching plate, and a safety lid operating member for automatically opening and closing the safety lid according to the transformation of the culmination switching plate. It is characterized by that. In addition, below the end of the culm carrier, it is possible to transform into a non-cutter position that closes the culm input port of the cutter device and a cutter position that rotates upward from that position to open the culm input port. In providing a different culm switching plate, in a combine in which a cutout portion for avoiding interference with the culm carrier is formed in the culm switching plate, a cut is formed on the lower surface of the culm switching plate. While a safety lid that can open and close the notch is provided, an elastic member that automatically opens and closes the safety lid based on the relative position change accompanying the transformation of the culmination switch plate is provided at the edge of the culm insertion port. It is characterized by that. Further, in a combine in which the cutter device provided at the rear part of the machine body is configured to be rotatable rearward of the machine body with one side as a fulcrum, a safety cover that can be rotated back and forth is hung downwardly at the lower end of the front side of the cutter device. It is characterized in that it is arranged in. And this invention improves the safety of the cutter device by this configuration,
This system enables orderly transfer of culms and contributes to improvement of post-processing accuracy.

[0004]

Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, 1 is a combine, and the combine 1 comprises a pretreatment section 2 for cutting stems, a threshing selection section 3 for threshing and selection of cut stems, and a threshing-treated culm. It is composed of a post-processing section 4 for post-processing, a traveling section 5 composed of a crawler-type traveling body, and the like, and the basic configurations of these are all the same as conventional ones.

Reference numeral 6 denotes an exhaust culvert feed chain (exhaust culvert carrier) which is disposed on the upper surface of the rear portion of the combine 1 in an inclined posture such that the rear side is biased to the right side.
Transports the threshing culms that have been transported to the end of the threshing feed chain 7 to the post-treatment section 4 while sandwiching them between the culling rails (not shown) arranged side by side on the lower side. It is configured such that the transport end position of the culm can be switched between a cutter position (front position) and a non-cutter position (rear position).
That is, an effluent switching rail (not shown) that is slidable back and forth is provided at the rear end of the effluent rail, and when the effluent switching rail is set at the cutter position, it is located at the end of the effluent feed chain 6. Before the culm is reached, the culm is dropped and supplied to the cutter device 8, which will be described later. On the other hand, when the culm switching rail is set in the non-cutter position, the culm is passed over the cutter device 8 and the end position of the culm feed chain 6 is reached. The culms are conveyed to and are supplied to a working machine such as a knotter device mounted behind the cutter device 8.

The cutter device 8 includes a pair of front and rear cutter shafts 10 provided with a plurality of rotary blades 9 at predetermined intervals.
Are arranged in parallel with each other at a predetermined interval. Then, in the cutter device 8, the culms dropped and supplied between the cutter shafts 10 are
The cutter shaft 8 is cut into a predetermined length based on the difference in peripheral speed of the rotary blades 9 provided on both cutter shafts 10. The upper surface of the cutter device 8 is provided with a culm insertion port 8a for charging culm. On the other hand, a culm discharge port 8b for discharging the cut culm is formed in the lower surface portion, and a maintenance opening 8c is formed in the front surface of the cutter device 8.

Reference numeral 11 is a drainage insertion port 8 of the cutter device 8.
The culm switching plate provided in a, the culm switching plate 11
Is configured to be rotatable up and down with a support shaft 11a at the rear end as a fulcrum, and in order to interlock with the sliding operation of the culvert switching rail, a culvert switching operation tool (not shown) via a wire 12. Is connected to. That is, when the culm switching rail is operated to the non-cutter position, the culm switching rail is operated to the cutter position while maintaining the non-cutter posture that covers the culm input port 8a and restricts the fall of the culm. In this state, the culm insertion port 8a is opened to maintain the cutter posture allowing the fall of the culms, but the middle portion of the tip end side of the culm switching plate 11 is connected to the culm feed chain 6 in the cutter posture. A cutout portion 11b for avoiding interference is formed, and as a result, the culvert switching plate 11 in the cutter posture is formed.
Cuts off the culm feeding path of the culm feed chain 6 and positively drops the culms from the culm feed chain 6 based on the inclination guide action.

Reference numeral 13 is a safety lid provided on the lower surface of the culm switching plate 11, and the safety lid 13 is configured to be rotatable up and down with a support shaft 13a at the rear end as a fulcrum. In the posture rotated upward, the notch 11b is closed from the lower side, while in the posture rotated downward, a guide for guiding the culm falling from the culm feed chain 6 between the cutter shafts 10. It functions as a member.

Further, 14 is a leaf spring (elastic member) provided upright on the rear end edge of the culm throwing port 8a. The leaf spring 14 is forward from the rear end edge of the culm throwing port 8a. Since it is erected on the tip of the protruding bracket 15, the virtual rotation fulcrum (base end fixed position) of the leaf spring 14 is located in front of the rotation fulcrum (fulcrum shaft 11a) of the culm switching plate 11. Therefore, the relative position between the leaf spring 14 and the safety lid 13 is changed along with the transformation of the culvert switching plate 11. That is, when the culm switching plate 11 is in the cutter posture, the leaf spring 14 is in the upright state, so that it follows the rear surface of the safety lid 13 rotated downward. When the leaf spring 14 is pressed along with the rotation toward the cutter posture, the pressing piece 14a bent and formed at the tip of the leaf spring 14 slides toward the support shaft 13a, and moves the safety lid 13 forward. When the culm switching plate 11 reaches the non-cutter position, the pressing piece 14a rides over the support shaft 13a and elastically holds the safety lid 13 in the notch closing position. The safety lid 13 that is forcedly rotated to the closed posture contacts the locking piece 16 provided at the front end edge of the culm insertion port 8a from above, and therefore rotates downward even if pressed from above. Moreover, since rattling due to traveling of the aircraft is restricted, rattling noise can be prevented from being generated.

By the way, the cutter device 8 is configured to be rotatable rearward of the machine body with a support shaft 17 provided on one side of the machine body as a fulcrum in order to improve maintainability of the machine body rear portion and the cutter device 8. In the present embodiment, since the support shaft 17 is tilted rearward, the cutter device 8 maintains its rearward turning posture by its own weight. Incidentally, 18 is a locking operation tool for locking the cutter device 8 in a normal position,
Reference numeral 19 is a stopper link for restricting unnecessary rotation of the cutter device 8.

Further, 20 is a safety cover which hangs on the lower end of the front side of the cutter device 8 so as to be rotatable back and forth. The safety cover 20 is such that the cutter device 8 rotated backward is based on wind or the like. When returning to nature, the operator between the rear part of the machine body and the cutter device 8 is informed that the cutter device 8 has rotated by hitting ahead of the cutter device 8, and the cutter device 8 moves forward. When the cutter device 8 is turned to, it is turned upward and backward based on the contact with the worker to close the culm discharge port 8b of the cutter device 8.

In the embodiment of the present invention constructed as described above, the culm switching plate 11 for opening and closing the culm insertion opening 8a of the cutter device 8 is provided with a cut for avoiding interference with the culm feed chain 6. Although the notch 11b is formed, since the safety lid 13 is provided on the lower surface of the culvert switching plate 11, the notch 11b can be closed during non-cutter work. In other words, it is possible to prevent the situation where the operator puts his / her hand through the cutout portion 11b and touches the internal parts of the cutter device 8, or it is possible to avoid catching the cutout portion 11b by the culm passing on the culvert switching plate 11. Therefore, it is possible to improve the safety of the combine 1 including the cutter device 8 and also to enable orderly culm transfer and improve the post-processing accuracy.

Moreover, the safety lid 13 is provided with the culvert switching plate 1
Since the notch 11b is opened and closed on the lower surface side of 1, the entire notch can be closed without considering interference with the culm feed chain 6.

Further, the safety lid 13 is provided with the culvert switching plate 1.
Since it can be opened and closed automatically with the transformation of No. 1, it is possible to save the operation by not requiring the opening and closing operation, or put the culm switching plate 11 in the cutter posture with the notch 11b closed. The inconvenience of causing the safety lid 13 to interfere with the culm feed chain 6 by transforming it can be eliminated.

Further, the leaf spring 1 is used to open and close the safety lid 13 by utilizing the relative position change associated with the transformation of the culm switching plate 11.
The safety lid opening / closing mechanism can be configured with only four or so simple members, and as a result, it is possible to contribute to the reduction of the number of parts and the simplification of the structure.

During the cutter work, since the safety lid 13 is in a hanging position and functions as a guide for feeding culm, a large amount of culm is supplied, even if it is not necessary to provide a separate guide member. In this case, since the culms are forcedly pushed between the cutter shafts 10 based on the urging force of the leaf spring 14 located at the rear, it is possible to contribute to the prevention of clogging of the culms.

Further, since the locking piece 16 for locking the safety lid 13 in the closed posture is provided, even if the provisional safety lid 13 is pushed by hand, it is possible to prevent the hand from entering the cutter device 8. Moreover, since rattling caused by traveling of the machine body is restricted, it is possible to prevent rattling noise.

Further, since the safety cover 20 which can be rotated back and forth is hung at the lower end of the front side of the cutter device 8, when the cutter device 8 rotated backward is naturally returned by wind or the like, the machine body Is it permissible to notify the operator between the rear part and the cutter device 8 of the rotation of the cutter device 8 by hitting ahead of the cutter device 8?
When the cutter device 8 is rotated further forward, the cutter device 8 is rotated rearward and upward based on contact with the worker to close the culm discharge port 8b of the cutter device 8, so that even if the worker stands up temporarily. It is possible to prevent contact with the internal parts of the cutter device 8.

Further, since the turning support shaft 17 of the cutter device 8 is tilted backward, the cutter device 8 can be maintained in the backward turning posture by its own weight, and as a result, the cutter device 8 is prevented from returning to its natural position. The safety during maintenance can be improved.

[0020]

In summary, since the present invention is constructed as described above, the culm switching plate that opens and closes the culm feeding opening of the cutter device is provided with a cutting device for avoiding interference with the culm carrier. Even though the notch is formed, a safety lid is provided to open and close the notch.Therefore, during non-cutter work, the notch is closed with the safety lid, and the drainage opening of the cutter device is opened. It becomes possible to close the whole.
Therefore, it is possible to eliminate the situation in which the internal parts of the cutter device can be reached through the cutout portion, and it is also possible to eliminate the possibility that the culm passing on the culvert switching plate is caught in the cutout portion. As a result, it is not possible to improve the safety of the combine, and it is possible to make orderly drainage transfer and contribute to the improvement of the post-processing accuracy.

Moreover, since the safety lid is provided to open and close the notch on the lower surface side of the culm switching plate, the entire notch can be closed without considering interference with the culm carrier. There is.

Further, since the safety lid automatically opens and closes in accordance with the change of the culmination switch plate, the opening and closing operation can be dispensed with, and the culmination switch plate can be opened with the cutout portion closed. It is also possible to eliminate the inconvenience of rotating the safety cover upward and interfering the safety lid with the culm carrier.

Furthermore, in constructing the cutter device so as to be rotatable rearward of the machine body with one side as a fulcrum, a safety cover rotatable front and rear is provided in a hanging shape at the lower end of the front side of the cutter device. Then, in the situation where the cutter device is rotated backwards to perform maintenance on the rear part of the machine body,
Even if the provisional cutter device returns naturally due to wind,
Since the safety cover comes into contact with the worker first, it is possible to recognize that the cutter device has returned and take appropriate measures,
Moreover, since the safety cover is rotated rearward and upward by hitting the worker to close the lower surface of the cutter device, even if the lower surface of the provisional cutter device is opened, the worker cannot use the internal parts of the cutter device. Can be prevented, and as a result, safety during maintenance can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a combine.

FIG. 2 is a perspective view of a cutter device.

FIG. 3 is a perspective view showing a state in which the cutter device is rotated rearward.

FIG. 4 is a side view of a cutter device.

FIG. 5 is a cross-sectional view of a main part of a cutter device showing an operation of a safety lid.

FIG. 6 is a rear view of the main part of the same showing a cutter working state.

[Explanation of symbols]

 1 Combine 4 Post-Processing Part 6 Drain Feed Chain 8 Cutter Device 8a Drain Feeding Port 11 Drain Switching Plate 11b Cutout 13 Safety Lid 14 Leaf Spring

Claims (3)

[Claims] 1. A non-cutter posture that closes a culm insertion port of a cutter device below a terminal end of a culm carrier and a cutter posture that rotates upward from the posture to open the culm insertion port. In providing a transformable culvert switching plate, a combine, wherein the culm switching plate is provided with a cutout portion for avoiding interference with the culm carrier, and the combine is provided with culms. A safety lid that can open and close the notch from the bottom side of the switching plate,
A safety structure for a cutter device in a combine, comprising: a safety lid operating member that automatically opens and closes the safety lid according to a change in the culm switching plate. 2. A non-cutter posture that closes the culm throwing port of the cutter device below the terminal end of the culm carrier and a cutter posture that rotates upward from the posture to open the culm throwing port. In providing a transformable culvert switching plate, in a combine in which a cutout portion for avoiding interference with a culm carrier is formed in the culvert switching plate, a lower surface part of the culling switching plate In addition, a safety lid that can open and close the notch is provided, while an elastic part that automatically opens and closes the safety lid at the edge of the drainage insertion port based on the relative position change accompanying the transformation of the drainage switching plate. A safety structure for a cutter device in a combine characterized by having members. 3. A cutter device provided at the rear of the machine body,
In a combine that is configured to be rotatable rearward of the machine body with one side as a fulcrum, in the lower end of the front side of the cutter device, a safety cover that can be rotated back and forth is disposed in a hanging shape. Cutter device safety structure.