JP2729607B2 - Combine threshing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine threshing apparatus for threshing grain stalks that have been cut at a cutting section.

[0002]

2. Description of the Related Art Conventionally, as shown in Japanese Utility Model Laid-Open Publication No. Sho 61-170241, when a threshing section is opened to perform maintenance and inspection of a handling room and a handling cylinder and exchange of a crimp net, a fulcrum shaft is mainly used. There was a technology to move the feed chain to open the side of the threshing section.

[0003]

In the above prior art, the troublesome work of removing the feed chain was saved, but the feed chain was rotated downward and opened to the lower side of the threshing unit side, so that the maintenance and inspection of the handling cylinder was performed. Or it is necessary to replace the crimp net from the space above the feed chain, and it is troublesome for the worker to approach the threshing section through the feed chain, and at the end of the work, lift the feed chain and return it to the original position. The feed chain needs to be returned, and there is trouble in lifting the heavy feed chain, and there is a problem that the feed chain falls due to its own weight due to damage to the fixing portion. Also, since the lower edge of the threshing side plate on which the feed chain is provided is connected to the side of the threshing unit by a fulcrum axis, it is desirable to provide a lock mechanism at the upper edge of the threshing side plate away from the fulcrum axis. , It is necessary to mount the lock mechanism at a position close to the fulcrum axis or at a position where it is troublesome to engage and disengage, which causes problems such as simplification of the lock mechanism and improvement of the operability of the engagement and disengagement. is there.

[0004]

SUMMARY OF THE INVENTION The present invention is directed to a combine threshing apparatus in which a feed chain is stretched in the front-rear direction on one side of a threshing unit. A lock mechanism is attached to the side of the threshing unit via a horizontal rotation fulcrum shaft, and the chain rail is removably engaged with the side of the threshing unit. Is provided on the side remote from the lock mechanism, so that the feed chain and the chain rail are rotated in the horizontal direction to open the threshing unit side, as in the conventional case. There is no hassle of lowering and raising the feed chain, and the operation of separating or joining the feed chain to the side of the threshing unit can be performed more easily than before. There is no need to replace the crimping net over the feed chain as in the related art, and it is possible to eliminate the problem that the action of the operator on the side of the threshing unit is restricted by the feed chain, and the horizontal rotation fulcrum shaft and the lock mechanism By separating the feed chain from each other, the feed chain which is long in the front and rear direction can be stably supported on the threshing unit side by the horizontal rotation fulcrum shaft and the lock mechanism, and the mounting strength of the feed chain which can be freely opened in the horizontal direction is improved. This facilitates simplification of the lock mechanism and improvement of the engagement and disengagement operability.

Further, a lock mechanism is provided at a position near the drive input of the feed chain, and the support force of the drive input portion of the feed chain can be easily secured by the engaging action of the lock mechanism.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is an explanatory side view of a feed chain portion, FIG. 2 is an overall side view of a combine, and FIG. 3 is a plan view of the same, where (1) is a track frame on which a traveling crawler (2) is mounted, and (3) Is a machine frame installed on the truck frame (1), (4) is a threshing unit in which a feed chain (5) is stretched to the left and a handling drum (6) and a processing drum (7) are built in, (8). ) Is a mowing section provided with a cutting blade and a grain culm transport mechanism, (9) is a straw processing section that faces the end of a straw chain (10), (11) is a driver's seat (12) and an operation section (1).
A driver's cab provided with 3), an engine section (14) provided at the rear right side of the machine chassis (3) and an engine (15) provided therein;
A grain tank (16) is disposed in front of the engine unit (14) to store grains from the threshing unit (4), and (17) takes out grains in the grain tank (16) to the outside. It is a discharge auger and is configured to perform continuous harvesting and threshing work.

As shown in FIGS. 4 to 6, an upper wall cover (18) of the threshing unit (4) is provided to be openable upward, and the feed chain (5) is opened to the left of the threshing unit (4). The support rod (2) is provided on the support (19) of the cover (18) via a frame (20).
1) is connected and supported, and the base end of the cover (18) is supported on a fixed bracket (22) on the threshing body side via a fulcrum shaft (23) so as to be openable and closable. In addition, (24) is a clamping rod cover which covers the outside of the clamping rod (21), and (25) is a lock member for closing and holding the cover (18).

A drive sprocket (26), which is a front rotating body, is provided at the front end of the lower chain rail (27), and is also provided at the rear ends of the lower and upper chain rails (27) and (28). And a driven sprocket (30) as a rear rotating body, and a feed chain (5) is stretched over each of the sprockets (26) and (30). ) And the pivot plate (2)
9) An upper and lower horizontal pivot shaft (33) (3) is attached to a lower pivot plate (32) which is connected and fixed downward via a column (31).
4) are fixedly mounted, and the feed chain (5) is supported on the fixing brackets (35) and (36) on the threshing body side via the fulcrum shafts (33) and (34) so as to be openable to the side. doing.

Further, the handle rail side cover (38) for pressing the lower end thereof against the outer end (37a) of the crimp net (37) under the handle cylinder (6) is provided with the chain rail (27).
(28) via a mounting frame (39) (40) and a tension roller (41) and a sprocket (42) of the feed chain (5) via a guide plate (42a). (27), when the feed chain (5) is opened to the side, the side cover (38), the tension roller (41), and the sprocket (42) are integrally rotated sideways. I have.

When the feed chain (5) is closed, the locking pin (43) of the front plate (38a) of the side cover (38) is connected to the locking plate (4) on the threshing front plate (44).
5), the lock plate (45) is held on the front side plate (44) via the support shaft (46), the stopper pin (47) and the spring (48), and the side cover ( 38) When the pin (43) is closed, the pin (43) abuts on a guide lever (49) fixed to the lock plate (45),
The lock plate (45) is pushed downward against the spring (48), and the pin (43) engages with the pin engagement groove (50) of the lock plate (45), and the side cover (38) and the feeder The chain (5) is configured to be fixedly held in the closed position.

A drive case (51) fixed to the threshing unit (4) body is provided with a drive shaft (52) for driving the feed chain (5).
2) is connected to an input shaft (53) via a gear (54), and is connected to a sprocket shaft (55) of the drive sprocket (26) via a limit clutch (56). Are connected and connected to each other to form a drive transmission system using the clutch claws of the limit clutch (56), thereby reducing the number of parts and improving durability as compared with the conventional pin connection system, and transporting the grain hulls for threshing. A feed chain (5) is provided so as to be openable to the side of the threshing unit (4), and the feed chain (5) is rotatable about a horizontal rotation fulcrum shaft (33) (34) which is a vertical axis. And a drive shaft (52) which is a drive unit on the machine side.
A sprocket shaft (55), which is a transmission connection portion detachably connected to the shaft, is provided on a side remote from the horizontal rotation fulcrum shafts (33) and (34).

Further, the fulcrum shafts (33) and (34) supporting the rear end side of the feed chain (5) are located at a position rearward from the sprocket shaft (57) of the driven sprocket (30) by a distance (t), It is arranged closer to the threshing body side than the feed chain (5), and when the feed chain (5) is opened, a pivot plate (29) which is the rearmost end of the chain (5).
(32) is designed to prevent the interference between the threshing body and the feed chain (5) while minimizing the amount of entry into the threshing body side of (32) and keeping the overall width of the machine right and left within certain dimensions. In a structure in which a feed chain (5) for transporting grain culm is provided to be openable to the side of the threshing unit (4), a horizontal rotation fulcrum shaft (33) of the feed chain (5) opening to the side of the threshing unit (4). (34) is provided at a position further outward than the sprocket shaft (57) of the sprocket (30) supporting the end of the feed chain (5) and closer to the threshing body than the feed chain (5). .

As is apparent from the above description, in a combine threshing device in which a feed chain (5) is stretched in one direction on one side of the threshing unit (4), the feed chain (5)
The chain rails (27) and (28) for tensioning are attached to the side of the threshing unit (4) via horizontal rotation fulcrum shafts (33) and (34) so as to be rotatable in the horizontal direction.
A lock plate (45), which is a lock mechanism for engaging and disengaging the 8) with the side of the threshing unit (4), is disposed in the endless extension locus of the feed chain (5) and the feed chain (5). A horizontal rotation fulcrum shaft (33) (34) for rotatably mounting the shaft is provided on a side remote from the lock plate (45), and the feed chain (5) and the chain rails (27) and (28) are horizontal. The feed chain (4) is opened by rotating it in the direction, so there is no need to lower and raise the feed chain (5) as in the past, and the feed chain (5) is separated from the side of the threshing unit (4). Alternatively, the joining operation can be performed more easily than in the past, and the crimping net (37) over the feed chain (5) as in the past.
There is no trouble in performing replacement or the like, and it is possible to eliminate the problem that the action of the worker on the side of the threshing unit (4) is restricted by the feed chain (5), and the horizontal rotation fulcrum shaft (33).
By separating the (34) and the lock plate (45) from each other, the feed chain (5), which is long in the front and rear directions, is moved by the horizontal rotation fulcrum shafts (33) and (34) and the lock plate (45) to the threshing unit (4). ) It is configured so that the feed chain (5), which can be stably supported on the side and can be freely opened in the horizontal direction, can improve the mounting strength, and can simplify the lock mechanism (45) and improve the operability. .

Further, a lock plate (45) is provided at a position near the drive input of the feed chain (5), and the driving force of the feed chain (5) is supported by the lock plate (45).
Are configured so as to be secured by the engaging action.

This embodiment is constructed as described above, and the rotating fulcrum shafts (33) and (34) for supporting the feed chain (5) so as to be openable are connected to the sprocket shaft (30) of the driven sprocket (30). Since the feed chain (5) is disposed closer to the threshing body side than the feed chain (5) at a position rearward from the feed chain (5) by the dimension (t), the pivot mounting plate (29) ( 32) The margin of entry into the threshing body side at the rear end is minimized, and the safety without any inconvenience such as interference in a state where the entire body width is suppressed to a certain size without extending the feed chain (5) to the outside of the threshing body. Opening work can be performed.

When the feed chain (5) is pivotally released, the chain rails (27) and (2) are wound with the feed chain (5) wound around the driving sprocket (26).
8), the feed chain (5) can be easily opened and the work efficiency is excellent, and when the feed chain (5) is opened, the handle cylinder side cover (38) is opened. ) Is also drawn out at the same time, and threshing section (4)
The side surface is in an open state, so that inspection and maintenance of the handling room and replacement work of the crimp net (37) can be conveniently performed.

[0017]

As is apparent from the above embodiments, the present invention relates to a combine threshing device in which a feed chain (5) is stretched in one direction at one side of a threshing unit (4). Chain rail for installation (27)
(28) can be rotated horizontally in the horizontal direction.
3) A lock mechanism (45) that is attached to the side of the threshing unit (4) via the (34) and that locks the chain rails (27) and (28) to the side of the threshing unit (4) in a detachable manner. 5) While being arranged in the endless stretch locus,
The horizontal rotation fulcrum shafts (33) and (34) for mounting the feed chain (5) so as to be horizontally rotatable are connected to the lock mechanism (4).
The feed chain (5) is provided on the side remote from 5).
And since the chain rails (27) and (28) are rotated in the horizontal direction to open the side of the threshing unit (4), there is no trouble of lowering and raising the feed chain (5) as in the related art.
The operation of separating or joining the feed chain (5) to the side of the threshing unit (4) can be performed more easily than before, and the crimping net (37) needs to be replaced through the feed chain (5) as in the conventional case. There is no trouble to perform, and the action of the worker on the side of the threshing unit (4) is the feed chain (5)
The horizontal rotation fulcrum shafts (33) and (34) and the lock mechanism (45) are separated from each other, so that the long feed chain (5) can be horizontally moved. Rotating fulcrum shaft (33) (34)
And a lock mechanism (45) that can be stably supported on the side of the threshing unit (4) and that is capable of improving the mounting strength of the feed chain (5) that can be freely opened in the horizontal direction and that the lock mechanism (45).
Simplification and improvement of the disengagement operability can be easily achieved.

Further, a lock mechanism (45) is provided at a position near the drive input of the feed chain (5), and the driving force of the feed chain (5) is supported by the lock mechanism (4).
It can be easily secured by the engagement action of 5).

[Brief description of the drawings]

FIG. 1 is an explanatory side view of a feed chain unit.

FIG. 2 is an overall side view of the combine.

FIG. 3 is a plan view of the same.

FIG. 4 is an explanatory sectional view of a threshing unit.

FIG. 5 is an explanatory plan view of a feed chain unit.

FIG. 6 is a partial explanatory view of the same.

[Explanation of symbols]

 (4) Threshing unit (5) Feed chain (27) (28) Chain rail (33) (34) Horizontal pivot shaft (45) Lock plate (lock mechanism)

Claims (2)

(57) [Claims] 1. A threshing device of a combine for extending a feed chain in the front-rear direction on one side of a threshing unit, wherein the threshing chain rail for extending the feed chain is freely rotatable in a horizontal direction through a horizontal rotation fulcrum shaft. A horizontal rotation fulcrum that is attached to the side surface of the feed chain and that locks the chain rail so as to be detachably engaged with the side surface of the threshing unit in the endless stretch trajectory of the feed chain. A threshing device for a combine, wherein a shaft is provided on a side remote from the lock mechanism. 2. The combine threshing apparatus according to claim 1, wherein a lock mechanism is provided at a position near the drive input of the feed chain.