JPH06141653A - Combine harvester - Google Patents

Abstract

PURPOSE:To arrange a transmission case adjacently to a reaping part by arranging a reaping belt between the transmission case and a mobile belt and installing an inputting pulley for stretching the reaping belt and a tension spring of the mobile belt in a specific positional relationship. CONSTITUTION:A reaping belt is arranged between a transmission case 22 and a mobile belt 27 when viewed in a plane. A tension spring 29 for the mobile belt is installed at nearly the same height as that of an inputting pulley 37 for stretching the reaping belt on the right side of the reaping part on the front side of the pulley 37. The tension spring is provided adjacently to the outside of a horizontal rotation locus 67 of the pulley 37 with the horizontal fulcral shaft 32 of the reaping part as the center. Thereby, the right and left installation width of the reaping part and the transmission case can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine having a cutting section and a threshing section, for continuously cutting grain culms and threshing.

[0002]

2. Description of the Related Art Conventionally, a transmission belt for transmitting a traveling driving force to a transmission case and a reaping belt for transmitting a reaping driving force to a reaper are provided, and a horizontal fulcrum shaft for rotatably supporting the reaper is provided. There was a technology to horizontally rotate the reaping section to the left side of the machine centering on the shaft to open the front side of the threshing section.

[0003]

In the prior art described above, the running belt is provided between the left side of the transmission case and the reaping belt to prevent the reaping input pulley on the right side of the reaper from interfering with the running belt mechanism. Since the mission case is located on the right side of the aircraft with respect to the parts, it is not possible to easily reduce the lateral width of attachment of the mowing part and the mission case, and there is a problem that the aircraft is right balanced due to the heavy weight of the mission case on the right side. there were.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, the transmission case is provided with a traveling belt for transmitting the traveling driving force and the mowing section is provided with the mowing belt for transmitting the mowing driving force, and the mowing section is supported so as to be horizontally rotatable. In a combine with a horizontal fulcrum shaft, the reaping belt is arranged between the mission case and the traveling belt in plan view, and at the same height as the pulley in front of the reaping input pulley for tensioning the reaping belt on the right side of the reaping section. A tension spring for the traveling belt is provided, and the tension spring is provided close to the outer side of the horizontal rotation locus of the reaping input pulley centered on the horizontal fulcrum shaft, and the right side of the reaping portion and the traveling belt are overlapped in a plan view, The mission case can be placed close to the mowing section, and it is easy to install the mowing section and the mission case to reduce the horizontal width and prevent the right balance of the machine body. Together they may have, those obtained achieving ease and compactness of the machine body by effectively utilizing the space between the reaper and the transmission case.

[0005]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a plan view of an elevating and lowering fulcrum cylinder shaft portion of the mowing section, FIG. 2 is an overall side view, and FIG. 3 is a plan view of the same, in which (1) is equipped with traveling crawlers (2a) and (2b). A truck frame, (3) is a machine stand installed on the truck frame (1), and (4) is a feed chain (5) stretched on the left side and has a handling cylinder (6) and a processing cylinder (7) built therein. Threshing Department, (8)
Is a mowing section equipped with a cutting blade (9) and a grain transfer mechanism (10), (11) is a hydraulic lifting cylinder for moving the cutting section (8) up and down through a lifting fulcrum cylinder shaft (12), and (13) is The straw processing unit that faces the end of the straw chain (14), (15) is a grain tank that carries the grain from the threshing unit (4) through the fried cylinder (16), and (17) is the tank ( A discharge auger for discharging the grain of 15) to the outside of the machine, (18) a driver's cab provided with a driver operation section (19) and a driver's seat (20), (21)
Is an engine provided below the driver's seat (20), and is configured to continuously mow grain culms and thresh.

Further, as shown in FIGS. 4, 5, and 6, a mission case (22) fixed to the front side of the machine base (3) is arranged in front of the engine (21), and drive sprockets are provided on both sides of the mission case (22). The left and right traveling crawlers (2) are stretched via the (23) and the engine (2
1) Output pulley (24) and mission case (22)
The traveling belt (27) is stretched between the input pulleys (25) of the vehicle through the traveling tension roller clutch (26),
The traveling driving force is transmitted to the mission case (22) by the traveling belt (27), and the tension spring (29) is stretched through the support column (28) standing on the machine base (3). ), The clutch (26) is elastically pressed against the belt (27) to be tensioned.

Further, the left and right mounts (30) and (31) for supporting the reaping section (8) are fixedly mounted on the front upper surface of the machine base (3),
A horizontal fulcrum shaft (32) at the left end of the lifting fulcrum cylinder shaft (12) is rotatably supported on the left mount (30), and the right end of the cylinder shaft (12) is detachably fitted to the right mount (31). With
Main beam (3) for inserting the cutting drive shaft (33)
4) and the transfer support pipe (36) into which the transfer drive shaft (35) is inserted, and the cutting unit (8) is connected to the cylindrical shaft (1).
2), the reaper (8) is moved up and down around the cylinder shaft (12), while the reaper (8) is rotated substantially horizontally around the fulcrum shaft (32) to move the reaper (8). ) Is horizontally rotated to the left side of the machine to open the threshing section (4) front side and the driver's cab (18) left side to perform maintenance and the like of each section, and a reaping input pulley (at the right end of the cylinder shaft (12) ( Three
7) is provided and the transmission case (2
The reaper belt (40) is stretched between the reaper pulley (38) and the input pulley (37) of (2) via the reaper tension roller clutch (39), and the reaper section (8) is formed through the belt (40). ) It is configured to drive each part.

Further, the bearing cylinder (4) is mounted on the machine base (3) behind the cylinder shaft (12) via the mounts (41) (41).
2) is fixed and a threshing input pulley (43) is provided at the right end of the cylinder (42), and a threshing tension roller clutch (is provided between the output pulley (24) of the engine (21) and the threshing input pulley (43). Threshing belt (45) through (44)
To drive each part of the threshing part (4) through the belt (45), and to stretch the running belt (27) forward and the threshing belt (45) backward on the left side of the engine (21). The left side of the mission case (22) and the running belt (2
7), the reaping pulley (38) is arranged, the right base (31) is arranged close to the left side of the output pulley (24), and the right side of the elevating fulcrum cylinder shaft (12) is arranged on the running belt (27). Crossed in a plan view.

Further, as shown in FIGS. 6, 7 and 8, a belt pressing board (46) is fixedly mounted on the left side surface of the engine (21), and a lower bracket (47) is fixed to the board (46). Output pulley (24) Running belt (27) on the lower front side
The lower bracket (47) is provided with a U-shaped lower fixed belt retainer (48) for supporting the lower bracket (47), and a horizontal frame (49) elongated in the front-rear direction is provided on the left side of the engine (21) substantially parallel to the belts (27) (45). The upper bracket (50) is integrally fixed to the horizontal frame (49) by being fixed to the stand (46),
A round bar-shaped upper fixed belt retainer (51) that supports the running belt (27) on the front upper side of the output pulley (24) and a disc (52) that supports the threshing belt (45) on the upper rear side of the output pulley (24). ) Is provided on the upper bracket (50), and the upper and lower fixed belt retainers (48) (51) limit the wave motion (dancing) of the traveling belt (27). The disc (52) and the fixed belt retainer (53) surround the upper side and the left side of the threshing belt (45).

A belt retainer (5) is attached to the bearing (49a) of the horizontal frame (49) via a fulcrum shaft (54).
5) Install the output pulley (2
4) The rear and lower running belts (27) are attached to the pulleys (2
4) Plate-shaped running belt retainer (56) to prevent it from coming off
And the threshing belt (45) on the lower rear side of the output pulley (24)
The rod-shaped and plate-shaped threshing belt retainers (57) (58) that prevent the blades from coming off the pulley (24) are integrally fixed to the tip of the belt retainer (55), and the belt retainer (55) is attached. The arm (59) and the horizontal frame (4
9) Extend the front end into the open space in front of the right mount (31),
The fixing arm (59) is detachably fixed to the horizontal frame (49) by the bolt (60), and the belt pressing body (55) is detachably connected and fixed to the machine body side through the horizontal frame (49). The belt (27) (45) and an operating position for preventing the bolt (60) from coming off and coming close to the belt (27) (45) by being attached and detached.
The belt retainer (55) is rotated to a non-acting position where it can be separated from the belt and is allowed to be replaced, and the belt (27) of the fixed belt retainers (48) and (51) is prevented from undulating so that the traveling belt (27) is secured. The traveling belt retainer (56) is arranged in close proximity to reduce the gap between the belt (27) and the belt retainer (56).

Further, as shown in FIGS. 5, 6 and 9, a part of the mission case (22) is projected to form the bearing portion (22a) of the input pulley (25), and the input pulley (2) is formed.
5) and the mowing pulley (38) are overlapped in a side view, and the front part of the mowing pulley (38) and the bearing part (22a) are brought close to each other so that the part (22a) is also used as a belt retainer and the traveling tension roller clutch (26) is used. ) Supporting the fulcrum shaft (62) of the tension arm (61) to the bearing portion (22a).
The bearing tube (64) of the bracket (63) fixed to the shaft is pivotally supported, and the cutting belt (4) at the upper rear side of the cutting pulley (38) is supported.
The fulcrum shaft (62) is also placed close to 0) to serve also as a belt retainer, and the reaping belt (40) is compactly arranged by effectively utilizing the periphery of the mission case (22). Mowing belt (4
0) to support the mowing belt retainer (65) fixed to the side of the mission case (22) with bolts (66), remove the mowing belt retainer (65) and replace the mowing belt (40). I am configuring.

As is apparent from the above configuration and FIG.
The transmission case (22) is provided with a traveling belt (27) for transmitting the traveling driving force and a reaper (8) with a reaper belt (40) for transmitting the reaping driving force, and the reaper (8) is rotatably supported horizontally. In a combine provided with a horizontal fulcrum shaft (32), a reaping belt (40) is arranged between the mission case (22) and the traveling belt (27) in plan view, and the reaper located on the rightmost side of the reaper (8) is reaped. The tension spring (29) of the traveling belt (27) is provided at the front side of the belt (40) for tensioning the cutting input pulley (37) at substantially the same height as the pulley (37), and the horizontal fulcrum shaft (32) is used as the center. The tension spring (29) is provided close to the outer side of the horizontal rotation locus (67) of the reaping input pulley (37). The upper end side of the tension spring (29) is extended in the right direction of the machine body. The tension spring (29) is stretched by inclining in the direction, and the tension spring (29) is arranged substantially parallel to and close to the tangent line of the horizontal rotation locus (67) of the mowing input pulley (37). Belt (40)
On the other hand, the tension spring (29) is configured to be obliquely crossed in a plan view.

Further, as shown in FIGS. 10 and 11, a mowing lift bracket (70) formed by a pair of substantially parallel fixed plates (68) (68) and a pair of substantially parallel movable plates (69) (69). The fixed plate (68) is integrally fixed to the pedestal (71) in the middle of the main beam (34), and the upper ends of the fixed plate (68) and the movable plate (69) are inclined by the fixed pin (72). In addition to being freely connected, the lifting cylinder (11) is connected to the track frame (1) through a support shaft (73), and the tip of the piston rod (74) of the cylinder (11) is connected to the intermediate portion of the movable plate (69). To the movable plate (69) through a pin (75).
6) via which the pin (75) is detachably inserted into the piston rod (74) and the pin (75) is fixed to the movable plate (69) by bolts (77), while the fixed plate (68) and the movable plate are movable. Openings (78) (79) on the lower inclined side of the plate (69)
The pin (80) is detachably inserted into the fixing plate (68)
The pin (80) is fixed to the bolt (81) by fixing to the fixed plate (68) and the movable plate (69) as shown in FIG.
Are alternately arranged in a staggered pattern, and a bracket (70) is provided on the lower surface on the right side of the main beam (34).
4) The lifting cylinder (11) is arranged on the right side of the machine body, and the lifting cylinder (11) is mounted on the center line in the front-rear direction passing through the position of the center of gravity of the reaper (8). The elevating cylinder (11) is positioned between the mowing input pulleys (37) to separate the main beam (34) from the mowing belt (40), and the elevating cylinder (1)
1) is configured to support the position of the center of gravity of the reaper (8).

[0014]

As is apparent from the embodiments described above, the present invention provides a traveling belt (27) for transmitting a traveling driving force to a transmission case (22) and a cutting belt (40) for transmitting a cutting driving force to a mowing section (8). ), And a horizontal fulcrum shaft (32) for horizontally rotatably supporting the reaper (8), the combine case (22) in plan view.
The reaping belt (40) is arranged between the traveling belt (27) and the traveling belt (27), and the reaping belt (40) on the right side of the reaper (8) is provided.
At the front side of the tensioning mowing input pulley (37), the pulley (3
7) A tension spring (29) for the traveling belt (27) is provided at substantially the same height as 7) so as to come close to the outside of the horizontal rotation locus (67) of the reaping input pulley (37) about the horizontal fulcrum shaft (32). The tension spring (29) is provided so that the right side of the mowing part (8) and the running belt (27) are overlapped with each other in a plan view, and the mission case (22) can be arranged close to the mowing part (8). It is possible to easily reduce the left and right width of the mowing unit (8) and the mission case (22) and prevent the right balance of the machine body, and to secure the space between the mowing unit (8) and the mission case (22). It can be effectively used to easily make the airframe compact.

[Brief description of drawings]

FIG. 1 is a plan view of an elevation fulcrum cylinder shaft portion of a mowing unit.

FIG. 2 is an overall side view.

FIG. 3 is a plan view of the same.

FIG. 4 is a side view of an engine output unit.

FIG. 5 is an explanatory view of the same plane.

FIG. 6 is a plan view of FIG.

FIG. 7 is an enlarged view of FIG.

FIG. 8 is a rear view of the engine output pulley section.

FIG. 9 is a front view of a mission case input pulley section.

FIG. 10 is a side view of a lifting cylinder unit.

FIG. 11 is a rear view of the lifting bracket portion.

[Explanation of symbols]

 (8) Mowing part (22) Mission case (27) Travel belt (29) Tension spring (32) Horizontal fulcrum shaft (37) Mowing input pulley (40) Mowing belt (67) Horizontal rotation trajectory

Claims (1)

[Claims] 1. A combine harvester comprising a traveling belt for transmitting a traveling driving force to a mission case and a mowing belt for transmitting a mowing driving force to a mowing section, and a horizontal fulcrum shaft for rotatably supporting the mowing section in a combine view. Install a mowing belt between the mission case and the running belt at the same time, and install a tension spring for the running belt at the same height as the mowing input pulley for tensioning the mowing belt on the right side of the mowing section at the same height as the pulley. A combine characterized in that the tension spring is provided close to the outside of the horizontal rotation locus of the reaping input pulley about the shaft.