JPH11308915A - Agricultural work vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an agricultural work vehicle capable of largely opening the side and upper portions of a machine box to improve workability for the attachment, detachment and exchange of parts in the machine box, cleaning works in the machine box, etc., and simplify the handling operations of the vehicle. SOLUTION: This agricultural work vehicle loads a machine box on a travel section. Therein, an upper cover 18 is attached to the upper side surface of the machine box in a state capable of being upward rotated on a lateral shaft 23, and a side cover 38 is also attached to the machine box side surface opposite to the lateral shaft 23 in a state capable of being rotated in the horizontal direction. A shaft receiver fixed to the outer side surface of the machine box is projected outside the machine to receive the vertical shaft.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an agricultural work vehicle such as a combine harvester for threshing grain stalks cut at a cutting section.

[0002]

Conventionally, in the case where the side of the casing is opened to perform internal maintenance and inspection and replacement of parts, it is necessary to lower the side cover to the lower side of the casing to open the casing. It is necessary to perform maintenance and inspections or replace parts from the space above the side cover, and it is troublesome for the operator to work inside the machine case through the side cover and lift the side cover at the end of work. Must be returned to the original position
Further, there is a problem that the side cover is lowered under its own weight due to damage to the fixing portion and the side cover is opened even during work.

[0003]

SUMMARY OF THE INVENTION According to the present invention, there is provided an agricultural work vehicle in which a machine case is mounted on a traveling unit, wherein an upper cover is mounted on a top surface of the machine case so as to be rotatable upward about a horizontal axis.
Since the side cover is attached rotatably in the horizontal direction around the vertical axis on the side of the casing opposite to the horizontal axis, since the side cover is rotated in the horizontal direction to open the side of the casing, There is no burden of lowering and raising the side cover, and the operation of separating or joining the side cover to the side of the casing can be performed lightly, and there is no hassle to replace parts etc. through the side cover, and the side of the casing The behavior of the worker in the part can be prevented from being restricted by the side cover, and the upper cover is turned around the horizontal axis on the opposite side of the side cover, and the side cover is turned horizontally. Both the side and the top of the housing can be largely opened to improve the operability such as attaching and detaching and replacing or cleaning the inside of the casing and to simplify the handling operation.

A vertical axis is provided by projecting a bearing member fixed to the outer surface of the casing to the outside of the machine. The vertical axis is fixed to the side cover side, and is vertically inserted into and removed from the bearing member. And the bearing member can be protruded horizontally on the side of the casing to separate the side cover in the open position from the side of the casing. Can be easily secured, and the bearing can be easily supported at the high rigidity position of the casing without being limited by the horizontal projection of the bearing member.

[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 threshing unit (4) body side 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 clutch pawls of the limit clutch (56), thereby reducing the number of parts and improving durability as compared with the conventional pin connection system. 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 apparent from the above description, in an agricultural work vehicle in which a threshing unit (4) as a machine body is mounted on a traveling crawler (2) as a traveling unit, a fulcrum as a horizontal axis is provided on the upper surface side of the threshing unit (4). An upper wall cover (18), which is an upper cover, is rotatably mounted upward around a shaft (23).
On the side of the threshing unit (4) opposite to 3), the handle body side cover (38) as a side cover is horizontally rotatable around a horizontal rotation fulcrum axis (33) (34) as a vertical axis. Attach to Since the side wall of the threshing section (4) is opened by rotating the handle body side cover (38) in the horizontal direction, there is no burden to lower and raise the handle body side cover (38), and the threshing section (4) is not required. )
The operation of separating or joining the handle cylinder side cover (38) to the side surface can be performed lightly, and the handle cylinder side cover (3)
8) There is no trouble of replacing parts such as the crimping net (37) over the threshing unit (4). Also, the fulcrum shaft (2) on the opposite side of the handle cylinder side cover (38)
3) By turning around the handle cylinder upper cover (18) upward and horizontally rotating the handle cylinder side cover (38), both the side and upper portions of the threshing unit (4) are greatly opened, and the threshing unit ( 4) It is configured to improve workability such as detaching and replacing internal parts or replacing or cleaning, and to simplify handling operations.

Further, horizontal brackets (33) and (34) are provided by protruding fixing brackets (35) and (36) as bearing members for fixing to the outer surface of the threshing unit (4) to the outside of the machine.
Handle the horizontal rotation fulcrum shafts (33) and (34)
8) and fix the bracket (35) (3)
6) so as to be able to be inserted and removed in the up and down direction to improve the feed delay and the operability of attaching / detaching the handle body side cover (38), etc. Further, the fixing brackets (35) and (36) are provided on the side of the threshing unit (4). ) Is horizontally protruded to secure a separation distance between the feed chain (5) at the open position and the side of the threshing unit (4), and the horizontal brackets (35) and (36) are horizontally protruded to provide a horizontal rotation fulcrum shaft. (33) (34) The mounting position is not limited, and is supported at the high rigidity position of the threshing unit (4).

In this embodiment, the rotation 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 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.

[0016]

As is apparent from the above embodiment, the present invention relates to an agricultural work vehicle in which a machine case (4) is mounted on a traveling section (2). The upper cover (18) is rotatably mounted on the upper side, and the vertical axis (33) (3) is attached to the side of the casing (4) opposite to the horizontal axis (23).
4) The side cover (38) is attached so as to be rotatable in the horizontal direction around it. The side cover (38) is rotated in the horizontal direction to open the side surface of the machine casing (4). There is no burden of lowering and raising the cover (38), so that the operation of separating or joining the side cover (38) to the side surface of the casing (4) can be performed lightly, and the side cover (3)
8) No need to replace parts, etc., over the machine (4)
The problem that the behavior of the worker on the side portion is restricted by the side cover (38) can be eliminated, and the upper cover (1) around the horizontal axis (23) opposite to the side cover (38) can be eliminated.
8) Due to the upward rotation and the horizontal rotation of the side cover (38), both the side and the top of the casing (4) can be largely opened,
It is possible to easily improve the operability such as attaching and detaching and replacing parts inside the casing (4) or cleaning and simplify the handling operation.

Further, the bearing members (35) and (36) fixed to the outer surface of the casing (4) are protruded to the outside of the machine so that the longitudinal axis (3
(3) The bearing member (3) is provided by fixing the longitudinal axes (33) and (34) to the side cover (38).
5) It can be connected to (36) vertically so that it can be inserted and removed, and the operability of attaching and detaching the side cover (38) can be easily improved. Further, the bearing member (35) is provided on the side surface of the casing (4). ) (36) is protruded horizontally to easily secure a distance from the side surface of the machine (4) in the open position, and the horizontal projection of the bearing members (35) (36) allows the longitudinal axis (33) to be protruded.
(34) It can be easily supported at a high rigidity position of the machine housing (4) without any limitation on the mounting position.

[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]

 (2) Traveling crawler (traveling part) (4) Threshing part (machine) (18) Upper wall cover (upper cover) (23) Support shaft (horizontal axis) (33) (34) Horizontal rotation support shaft (vertical) (Axle) (35) (36) Fixed bracket (bearing member) (38) Handle cover (side cover)

Claims (2)

[Claims] 1. An agricultural work vehicle having a casing mounted on a traveling unit, wherein an upper cover is rotatably mounted on a top surface of the casing so as to be rotatable upward around a horizontal axis, and is vertically mounted on a side of the casing opposite to the horizontal axis. An agricultural work vehicle having a side cover rotatably mounted in a horizontal direction about an axis. 2. A longitudinal axis is provided by protruding a bearing member fixed to the outer surface of the casing to the outside of the casing.
Agricultural work vehicle described in.