JP2729606B2 - 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 In the present invention, a feed chain is extended in the front-rear direction on one side of a threshing unit, and a clamping rod opposed to the feed chain transport unit is openable upward. In a combine threshing device attached to a cover, the feed chain is rotatably mounted in a horizontal direction on a side of the threshing unit via a horizontal rotation fulcrum shaft, and a rotation direction in which the horizontal rotation fulcrum shaft axis extension line is a tangent line. In addition, the upper part of the feed chain is constructed so that the clamping rod on the upper side of the feed chain and the upper cover of the handle cylinder open and close integrally, and the feed chain is rotated in the horizontal direction to open the side of the threshing section, 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, and the feed chain as in the past There is no trouble to carry out, such as come to crimp network switching, along with the can eliminate the problem that the operator of the action in the threshing side surface portion is regulated by the feed chain,
A wide maintenance work space can be easily formed on the side of the threshing section by opening the feed chain to the side and opening the clamping rod and the upper cover of the handle cylinder.

[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, the feed chain (5) is extended in the front-rear direction on one side of the threshing unit (4), and the clamping rod (21) opposed to the feed chain (5) transport unit is raised. In a combine threshing device which is attached to an upper side wall cover (18) which is an open top cover of the handling drum, the feed chain (5) is rotatable in a horizontal direction via horizontal rotation fulcrum shafts (33) and (34). Threshing unit (4)
Attached to the side surface, the horizontal rotation fulcrum shafts (33), (34), the clamping rod (21) on the upper side of the feed chain (5) and the upper side wall cover (18) in the rotation direction tangent to the extension of the axis.
, Which opens and closes integrally, feed chain (5)
Is rotated horizontally 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, and the operation of separating or joining the feed chain (5) to the side of the threshing unit (4) can be performed more easily than in the conventional case. There is no need to replace the crimping net (37) through the feed chain (5), and the operation of the threshing unit (4) on the side surface is not restricted by the feed chain (5). The horizontal opening movement of the feed chain (5) is permitted by the upward opening movement of the clamping rod (21), and the clamping rod (21) is in the closed position even when the combine is inclined toward the feed chain (5).
Thus, the feed chain (5) during disassembly can be prevented from being opened by the rotation of its own weight, and the rotation of the feed chain (5) during disassembly can be prevented by abutment with the clamping rod (21). Since the horizontal rotation fulcrum shafts (33) and (34) receive most of the weight of the feed chain (5), it is possible to eliminate the problem that the clamping rod (21) is damaged by the contact of the feed chain (5). It is configured as follows.

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, according to the present invention, the feed chain (5) is extended in the front-rear direction on one side of the threshing unit (4) and is opposed to the feed chain (5) transport unit. In a combine threshing device in which a clamping rod (21) is attached to a handle drum upper surface cover (18) that can be opened upward, a horizontal rotation fulcrum shaft (33) (34) is provided so that the feed chain (5) can be freely rotated in a horizontal direction. Attached to the side of the threshing unit (4) through the horizontal rotation fulcrum shaft (33) (3)
4) The clamping rod (21) on the upper side of the feed chain (5) and the handle cylinder top cover (1)
8) is configured to open and close integrally, and the feed chain (5) is rotated in the horizontal direction to open the side of the threshing unit (4). There is no trouble of lowering and raising operation, and the operation of separating or joining the feed chain (5) to the side of the threshing unit (4) can be performed more easily than in the past, and the feed chain (5) can be moved through the feed chain (5) as in the past. There is no need to replace the crimping net (37), 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). A wide maintenance work space can be easily formed on the side of the threshing unit (4) by opening the side and opening the clamping rod (21) and the upper cover (18) of the handle cylinder.

[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 (18) Upper side wall cover (handle cylinder upper surface cover) (21) Clamping rod (33) (34) Horizontal rotation fulcrum shaft

Claims (1)

(57) [Claims] 1. A combine threshing device in which a feed chain is stretched in the front-rear direction on one side of a threshing unit and a clamping rod opposed to the feed chain transport unit is attached to a handle drum upper surface cover which can be opened upward. The feed chain is rotatably mounted in the horizontal direction on the side of the threshing unit via a horizontal rotation fulcrum shaft. A threshing device for a combine, wherein the upper cover of the handling cylinder is configured to be opened and closed integrally.