JP2729611B2 - 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. Further, as disclosed in Japanese Utility Model Laid-Open Publication No. 62-128734, there is a technique of fixing a crimp net by a handle cylinder side cover. However, the lower end of the cover is connected to a side of the threshing unit via a fulcrum shaft and opened downward. The structure has the same disadvantages as described above, and the cover is provided with a clamping rod. Therefore, the cover needs to have sufficient strength to support the clamping rod, so that the cover structure is simplified and the cover opening / closing operability is improved. There is a problem that improvement cannot be easily performed.

[0004]

SUMMARY OF THE INVENTION The present invention provides a combine threshing apparatus in which a feed chain is stretched in the front-rear direction on one side of a threshing unit, wherein the feed chain is mounted on a chain rail, and the chain rail is moved horizontally. The chain rail is connected to the side of the threshing section via a horizontal rotation fulcrum shaft rotatably provided on the threshing section, and a handle cylinder side cover for contacting the crimp net side end of the threshing section is fixed to the chain rail, and Since the processing cylinder is arranged substantially parallel to the handling cylinder at the threshing section side opposite to the trunk side cover, the feed chain and the chain rail are rotated horizontally to open the threshing section side, There is no need to lower and raise the feed chain as in the past, and the operation of separating or joining the feed chain to the side of the threshing unit can be performed more easily than in the past, and There is no need to replace the crimping net over the feed chain, eliminating the problem that the action of the operator on the side of the threshing section is restricted by the feed chain. Since the cover is attached, the chain rail can also be used as the cover supporting member, the cover structure can be simplified and the manufacturing cost can be easily reduced, and the processing thrust unit on the side opposite to the threshing unit side where the processing cylinder is provided. It is possible to replace the crimp net or clean the lower surface of the handling cylinder from the position of the handling cylinder side cover, to simplify the processing cylinder mounting structure and to improve the handling operability, etc. Since the side opening is not restricted, the feed chain can be largely opened with a simple support structure.

[0005]

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 so as 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 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) which presses the lower end to the outer end (37a) of the crimping net (37) under the handle cylinder (6) is attached to 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 lock 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 main body of the threshing unit (4) 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 dimension (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 apparatus in which a feed chain (5) is stretched in one direction on one side of a threshing unit (4), a chain rail (27) (2)
8), the feed chain (5) is attached thereto, and the chain rails (27), (28) are rotatably provided in the horizontal direction. ) Is connected to the side of the threshing unit (4), and the handle cylinder side cover (38) that abuts on the crimping net (37) side end of the threshing unit (4) is the chain rail (27) (28).
And a processing cylinder (7) is disposed substantially parallel to the handling cylinder (6) on the side of the threshing unit (4) opposite to the handling cylinder side cover (38). Then, the feed chain (5) and the chain rails (27) and (28) are rotated in the horizontal direction to open the side of the threshing unit (4), and it is troublesome to lower and raise the feed chain (5) as in the conventional case. Not
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
There is no need to replace the crimping net (37) through the feed chain (5) as in the prior art, and eliminate the problem that the action of the worker on the side of the threshing unit (4) is restricted by the feed chain (5). Since the handle body side cover (38) is attached to the chain rails (27) and (28) supported by the threshing unit (4), the chain rails (27) and (28) are used as support members for the cover (38). The threshing unit (4) provided with the processing cylinder (7), which can also be used for simplification of the structure of the cover (38) and reduction of manufacturing cost.
The crimping net (37) can be replaced or the lower surface of the handling cylinder (6) can be cleaned from the position of the handling cylinder side cover (38) opposite to the side, and the processing cylinder (7) mounting structure can be simplified and handled. The operability can be easily improved, and the opening of the feed chain (5) is not restricted by the attachment of the processing cylinder (7). It is configured so that it can be opened.

This embodiment is constructed as described above, and the rotating fulcrum shafts (33) and (34) for supporting the feed chain (5) in an openable manner 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 opened, 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.

[0015]

As is apparent from the above embodiment, the present invention relates to a combine threshing apparatus in which a feed chain (5) is stretched in one direction on one side of a threshing section (4). ), The feed chain (5) is attached thereto, and the chain rails (27) and (28) are provided to be rotatable in the horizontal direction.
A handle cylinder side cover (38) that connects the chain rails (27) and (28) to the side of the threshing unit (4) via (34) and abuts the crimping net (37) side end of the threshing unit (4). To the chain rails (27) and (28),
A processing cylinder (7) is disposed substantially parallel to the handling cylinder (6) on the side of the threshing section (4) opposite to the handling cylinder side cover (38), and includes a feed chain (5) and a chain. Rail (27)
Since the side of the threshing unit (4) is opened by rotating the (28) in the horizontal direction, there is no trouble of lowering and raising the feed chain (5) as in the related art. The operation of separating or joining (5) can be performed more easily than in the past, and there is no trouble of replacing the crimping net (37) through the feed chain (5) as in the conventional case, and the threshing unit (4) It is possible to eliminate the problem that the action of the worker on the side portion is restricted by the feed chain (5), and the handle rail side cover (38) is attached to the chain rails (27) and (28) supported by the threshing unit (4). ), The chain rails (27) and (28) can be used as the support member for the cover (38), and the structure of the cover (38) can be simplified and the manufacturing cost can be easily reduced. In addition, the crimping net (37) is replaced or the lower surface of the handling cylinder (6) is cleaned from the position of the handling cylinder side cover (38) opposite to the side of the threshing unit (4) where the processing cylinder (7) is provided. Since it is possible to simplify the structure for mounting the processing cylinder (7) and to improve the handling operability, the processing cylinder (7) does not restrict the side opening of the feed chain (5). The feed chain (5) can be largely opened with a simple support structure.

[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 (6) Handling cylinder (7) Processing cylinder (27) (28) Chain rail (33) (34) Horizontal rotation fulcrum shaft (37) Crimp net (38) Handle cylinder side Section cover

Claims (1)

(57) [Claims] In a threshing apparatus of a combine, in which a feed chain is stretched in a front-rear direction on one side of a threshing unit, the feed chain is mounted on a chain rail, and the horizontal rotation fulcrum shaft is provided so that the chain rail is rotatable in a horizontal direction. A chain rail is connected to the side of the threshing unit via the threshing unit, and a handle cylinder side cover that abuts on the crimp net side end of the threshing unit is fixed to the chain rail, and a threshing unit opposite to the handle cylinder side cover. A combine threshing apparatus characterized in that a processing cylinder is disposed substantially parallel to a handling cylinder at a side portion.