CN112740894A

CN112740894A - Combine harvester

Info

Publication number: CN112740894A
Application number: CN202010127153.8A
Authority: CN
Inventors: 北川智志; 饭泉清; 石贺和平; 南智弘
Original assignee: Iseki and Co Ltd
Current assignee: Iseki and Co Ltd
Priority date: 2019-10-30
Filing date: 2020-02-28
Publication date: 2021-05-04
Also published as: JP2021069318A; CN212184234U; TW202116145A; KR20210052131A; JP6868231B2; PH12020050057A1

Abstract

The invention provides a combine harvester, which can collect dust flying from a grain inlet screw device of a harvesting pretreatment device to a control part and exhaust air of the control part heated by an engine to the outside. The harvesting pretreatment device (3) is provided with a feeding chamber (3D) for conveying harvested straws to a threshing device (4), a dust suction fan (40) for enabling the air supply direction to face the left and right direction is arranged on the upper side of a frame body (10) of the feeding chamber (3D), and when the harvesting pretreatment device (3) is lifted to a preset standby position, the dust suction fan (40) is positioned above a side panel (5B) of a control part (5).

Description

Combine harvester

Technical Field

The present invention relates to a combine harvester equipped with a harvesting pretreatment device.

Background

Conventionally, there is known a technique in which a suction fan is provided on the right wall of a housing of a feeding chamber and a dust suction port is provided on the left wall of the housing of the feeding chamber in order to collect dust lifted in a grain feeding screw of a harvesting pretreatment apparatus and discharge the dust accumulated in the feeding chamber to the outside. (patent document 1)

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 2012-115161

Disclosure of Invention

However, in the technique disclosed in patent document 1, there is a concern that the operation environment of the operation unit may be deteriorated by dust flying from the grain-feeding screw unit of the harvest preprocessing apparatus to the operation unit. In addition, there is a possibility that the temperature of the operation unit is increased by the air heated by the engine, which may deteriorate the operation environment.

Accordingly, an object of the present invention is to provide a combine harvester capable of collecting dust flying from a grain feeding screw of a harvesting pretreatment apparatus toward a manipulator and exhausting air of the manipulator heated by an engine to the outside.

The present invention for solving the above problems is as follows.

The invention of the proposal 1 is a combine harvester, a harvesting pretreatment device 3 for harvesting the grain stems of the farmland is arranged at the front side of a machine body frame 1, a threshing device 4 for threshing the harvested rice straw is arranged at the left side behind the harvesting pretreatment device 3, a control part 5 on which an operator gets is provided on the right rear side of the harvesting pretreatment device 3, and an engine room 6 on which an engine is mounted is provided below the control part 5, the harvesting pretreatment device 3 is provided with a feeding chamber 3D for conveying the harvested straws to the threshing device 4, a dust suction fan 40 for directing the blowing direction to the left and right direction is provided on the upper side of the frame 10 of the feeding chamber 3D, when the harvesting preparation apparatus 3 is raised to a predetermined standby position, the dust suction fan 40 is positioned above the side plate 5B of the manipulator 5.

In the invention according to claim 2, in addition to claim 1, the dust suction fan 40 is provided on a right front portion of the upper wall of the housing 10 in a plan view.

In the invention according to claim 3, in addition to claim 1 or 2, a first rotating shaft 13 extending in the left-right direction for transmitting the output rotation of the engine is provided at an intermediate portion in the front-rear direction of the feeding chamber 3D, a second rotating shaft 41 extending in the left-right direction is rotatably provided at an upper portion of the fixing member 50, a first pulley 43 is supported at a portion of the first rotating shaft 13 extending to the right side of the right wall of the feeding chamber 3D, the dust suction fan 40 is supported at a left portion of the second rotating shaft 41, a second pulley 44 is supported at a right portion of the second rotating shaft 41, and a belt 45 is wound around the first pulley 43 and the second pulley 44.

The invention of claim 4 is the invention of any one of claims 1 to 3, wherein the fixing member 50 includes: a fixing portion 51 detachably fixed to an upper wall of the housing 10; a column portion 52 extending upward from the fixing portion 51; and a cylindrical portion 53 extending in the left-right direction, in which the second rotation shaft 41 is fitted into an upper portion of the pillar portion 52, and the pillar portion 52 is formed in an コ -shaped configuration with an open left portion when viewed in a transverse cross section.

The present invention has the following effects.

According to the invention described in claim 1, the harvesting pretreatment apparatus 3 comprises a raking device 3A for raking and conveying the grain stalks rearward, a cutter device 3B for cutting the roots of the conveyed grain stalks, a grain feeding screw device 3C for gathering the conveyed grain stalks to one side, and a feeding chamber 3D for conveying the gathered grain stalks to the threshing device 4, wherein a dust suction fan 40 supported by a fixture 50 is provided on the upper wall of the frame 10 of the feeding chamber 3D, and when the harvesting pretreatment apparatus 3 is raised to a standby position in a side view, the dust suction fan 40 is located above the side plate 5B of the manipulating part 5, so that dust flying from the grain feeding screw device 3C to the manipulating part 5 of the harvesting pretreatment apparatus 3 is collected by the dust collection fan 40 and discharged to the outside of the manipulating part 5, and air in the manipulating part 5 heated by the engine is discharged to the outside of the manipulating part 5 by the dust collection fan 40, the operation environment of the operation unit 5 can be maintained well.

According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, since the dust suction fan 40 is provided at the front portion on the right side of the upper wall of the housing 10 in a plan view, the operation environment of the operation section 5 can be maintained satisfactorily.

According to the invention described in claim 3, in addition to the effects of the invention described in claim 1 or 2, the first rotary shaft 13 extending in the left-right direction for transmitting the output rotation of the engine is provided in the intermediate portion in the front-rear direction of the feeding chamber 3D, the second rotary shaft 41 extending in the left-right direction is rotatably provided in the upper portion of the fixing member 50, the first pulley 43 is supported by the portion of the first rotary shaft 13 extending to the right side of the right wall of the feeding chamber 3D, the dust suction fan 40 is supported by the left portion of the second rotary shaft 41, the second pulley 44 is supported by the right portion of the second rotary shaft 41, and the belt 45 is wound around the first pulley 43 and the second pulley 44, so that the dust suction fan 40 can be rotated by the output rotation of the engine, and it is not necessary to separately provide a motor or the like for rotating the dust suction fan.

According to the invention described in claim 4, in addition to the effect of the invention described in any one of claims 1 to 3, the fixing member 50 includes: a fixing portion 51 detachably fixed to the upper wall of the frame 10; a column portion 52 extending upward from the fixing portion 51; the pillar portion 52 is formed in an コ -shaped manner with the second rotation shaft 41 fitted in the upper portion thereof and the tube portion 53 extending in the left-right direction, and the pillar portion 52 is formed in a left-side open shape when viewed in a transverse cross section, so that the mount 50 is formed to be light and highly rigid, and deformation of the mount 50 can be prevented.

Drawings

Fig. 1 is a top view of a combine harvester.

Fig. 2 is a left side view of the combine harvester.

Fig. 3 is a front view of the combine harvester.

Fig. 4 is a left side view of the feeding chamber.

Fig. 5 is a front view in longitudinal section in the left-right direction of the feeding chamber.

Fig. 6 is a right side view of the feeding chamber.

Fig. 7 is a left side view in longitudinal section in the front-rear direction of the feeding chamber.

Fig. 8 is a front view of a feeding chamber provided with a dust suction fan, as viewed in a longitudinal direction in the left-right direction.

Fig. 9 is a left side view of the feeding chamber provided with the dust suction fan.

Fig. 10 is a front view of another tension arm.

In the figure: 1-machine body frame, 3-reaping pretreatment device, 3A-raking device, 3B-cutting knife device, 3C-grain-feeding screw device, 3D-feeding chamber, 4-threshing device, 5-operation part, 5B-side panel, 6-engine chamber, 10-frame body, 13-rotating shaft (first rotating shaft), 40-dust-absorbing fan, 41-rotating shaft (second rotating shaft), 43-belt wheel (first belt wheel), 44-belt wheel (second belt wheel), 45-belt, 50-fixing part, 51-fixing part, 52-column part, 53-cylinder part.

Detailed Description

As shown in fig. 1 to 3, a general purpose combine is provided with a traveling device 2 composed of a pair of right and left crawler belts traveling on a soil surface on the lower side of a body frame 1, a harvest preprocessing device 3 for harvesting grain stalks of a farmland on the front side of the body frame 1, a threshing device 4 for threshing and sorting the harvested grain stalks on the rear left side of the harvest preprocessing device 3, and a control part 5 for a manipulator to ride on the rear right side of the harvest preprocessing device 3.

A front panel 5A on which an operation lever and the like are arranged is provided in a front portion of the operation portion 5, and a side panel 5B on which a shift lever and the like for accelerating and decelerating the traveling speed of the traveling apparatus 2 are arranged is provided in a left portion of the operation portion 5. An engine room 6 in which an engine is installed is provided below the operation unit 5, a grain tank 7 for storing grains after threshing/sifting processing is provided on the rear side of the operation unit 5, and a discharge tube 8 for discharging grains to the outside is provided on the rear side of the grain tank 7. The discharge tube 8 includes a vertical discharge tube communicating with the lower portion of the grain tank 7 and extending in the up-down direction, and a horizontal discharge tube communicating with the upper portion of the vertical discharge tube and extending in the front-rear direction.

The harvesting pretreatment device 3 includes: a raking and raking device 3A which rakes and conveys the grain bars to the rear while standing up; a cutter device 3B for cutting the roots of the straw conveyed backward; a grain-feeding screw device 3C for collecting the backward-conveyed grain rods to the left; and a feeding chamber 3D for conveying the collected rice stalks to the threshing device 4.

As shown in fig. 4 to 7, a rotating shaft 11 extending in the left-right direction for transmitting the output rotation of the engine is provided on the rear portion of the left and right walls of the frame 10 of the feeding chamber 3D, and a first sprocket (not shown) is supported on the left portion of the rotating shaft 11. A support shaft 12 extending in the left-right direction is provided at the front portion of the left wall of the housing 10, and a second sprocket (not shown) is rotatably supported at the left portion of the support shaft 12. Further, a third sprocket (not shown) for transmitting the output rotation of the engine to the raking device 3A and the like is provided in parallel on the left portion of the support shaft 12 on the left side of the second sprocket.

A rotation shaft (in the embodiment, "first rotation shaft") 13 extending in the left-right direction is provided in a substantially middle portion of the left and right walls of the housing 10. A sprocket 14 is supported at a left portion of the rotary shaft 13 extending leftward from the left wall of the housing 10.

The rotary shaft 13 is housed in a cylindrical tube 13A extending in the left-right direction via a bearing. This prevents the grain bar transferred in the housing 10 from being wound around the rotary shaft 13.

The base of the arm 15A of the tension arm 15 is rotatably supported at a portion on the right side of the sprocket 14 on the left portion of the rotary shaft 13 extending leftward from the left wall of the housing 10. The tension arm 15 is formed of an arm 15A and a sprocket 15B rotatably supported by a tip end portion of the arm 15A.

A rear portion of a biasing mechanism 16, which is formed of a spring or the like, is coupled to an intermediate portion of the arm 15A in the front-rear direction. The front portion of the urging mechanism 16 is fixed to the upper portion of the left wall of the frame 10. The tension arm 15 is set in a posture in which the rear portion is tilted upward, the urging mechanism 16 is set in a posture in which the rear portion is tilted downward, and the arm 15A of the tension arm 15 and the urging mechanism 16 are connected at a crossing angle of substantially 90 degrees.

An idler pulley 17 is provided at a front lower portion of the left wall of the housing 10, and an idler pulley 18 and an idler pulley 19 are provided at a rear lower portion of the left wall of the housing 10 with respect to the rotation shaft 13.

The chain 20 is wound around the first sprocket, the sprocket 15B, the sprocket 14, the second sprocket, the idler 17, the idler 18, and the idler 19.

Thereby, the chain 20 that rotationally transmits the output of the engine to the raking rake 3A and the like is driven, and the rotary shaft 13 can be rotated. The tension of the chain 20 is adjusted to an appropriate tension by the tension arm 15, and the meandering of the chain 20 in the left-right and up-down directions is suppressed by the idle wheels 17 to 19.

A cover 21 for covering the sprocket 14, the tension arm 15, the chain 20, and the like is detachably provided on the left wall of the housing 10. This can prevent the operator from touching the chain 20 or the like.

A rotary body 22 is supported on the rotary shaft 11 at a position inside the housing 10, and a left sprocket 23A and a right sprocket 23B are provided in parallel on the outer peripheral portion of the rotary body 22 at a predetermined interval in the left-right direction. In addition, in this specification, the left sprocket 23A and the right sprocket 23B are collectively referred to as a rear sprocket 23.

A rotation shaft 25 extending in the left-right direction is provided at the front portion of the left and right walls of the housing 10, a rotation body 26 is supported at a portion of the rotation shaft 25 located inside the housing 10, and a left sprocket 27A and a right sprocket 27B are provided in parallel at a predetermined interval in the left-right direction on the outer peripheral portion of the rotation body 26. In addition, in the present specification, the left sprocket 27A and the right sprocket 27B are collectively referred to as a front sprocket 27

The left plate chain 28A is wound around the left sprocket 23A and the left sprocket 27A, and the right plate chain 28B is wound around the right sprocket 23B and the right sprocket 27B. Further, the slat 29 formed in a substantially コ shape is provided so as to be bridged in the front-rear direction at a predetermined interval between the left slat chain 28A and the right slat chain 28B. This enables the grain stalks conveyed from the grain feeding screw 3C to the feeding chamber 3D to be efficiently conveyed to the threshing device. In this specification, the left plate link chain 28A and the right plate link chain 28B are collectively referred to as a plate link chain 28.

As shown in fig. 8 and 9, a dust suction fan 40 is provided at the right front portion of the upper wall of the housing 10. Accordingly, when the feeding chamber 3D is raised to the standby position, the dust suction fan 40 can move upward relative to the side plate 5B of the manipulator 5 in a side view, so that dust scattered in the manipulator 5 can be sucked by the dust suction fan 40 and discharged to the outside of the manipulator 5, and air in the manipulator 5 can be sucked and convected to discharge hot air in the manipulator 5 to the outside.

The dust suction fan 40 is supported by a fixing member 50, and the fixing member 50 is detachably fixed to a plate 30 provided to cover a front portion of the upper wall of the housing 10.

In a front view, the plate 30 is formed into a substantially コ -shaped configuration with an opening on the lower side, and a left leg extending in the vertical direction of the plate 30 is detachably fixed to the left wall of the frame 10, and a right leg extending in the vertical direction of the plate 30 is detachably fixed to the right wall of the frame 10.

The mount 50 includes a rectangular fixing portion 51 detachably attached to the upper surface of the plate 30, a column portion 52 formed at the right portion of the upper surface of the fixing portion 51 and extending in the vertical direction, and a cylindrical tube portion 53 formed at the upper portion of the column portion 52 and extending in the horizontal direction.

The pillar portion 52 is formed in a transverse cross-sectional shape in a substantially コ shape with a left side opening. This makes the pillar portion 52 lightweight and highly rigid, and prevents deformation of the pillar portion 52.

In the front view, the lower portion of the pillar portion 52 is formed to be inclined downward to the left, i.e., to extend in the left direction as it goes to the lower side. In the left side view, the fixing portion 51 and the lower portion of the column portion 52 are connected by a substantially triangular rib 54. This increases the rigidity of the lower portion of the pillar portion 52, and can further prevent the lower portion of the pillar portion 52 from deforming.

A support shaft 55 extending in the left-right direction for rotatably supporting a tension arm 46 described later is provided at a right vertical intermediate portion of the column portion 52.

A circular plate 57 that detachably fixes a fan cover 56 covering the outer periphery of the dust suction fan 40 is provided on the left portion of the cylindrical portion 53, and a support portion 58 that supports a belt cover 48 described later is provided on the right portion of the cylindrical portion 53.

The fan cover 56 is formed of a cylindrical box portion 56A, a circular attachment portion 56B provided at the right end of the box portion 56A, and 3 arm portions 56C connecting the attachment portion 56B and the box portion 56A.

The diameter of the plate 57 of the fixing member 50 and the diameter of the mounting portion 56B of the fan cover 56 are formed smaller than the diameter of the base of the circular shape on which the blades of the dust suction fan 40 stand radially. This prevents the plate 57 and the like from being an obstacle, and prevents the dust collection efficiency of the dust collection fan 40 from being lowered.

In the left side view, the pillar portion 52 of the mount 50 and 1 arm portion 56C of the fan cover 56 are provided at opposing positions. This prevents the column 52 from being an obstacle, and thus prevents the dust collection efficiency of the dust collection fan 40 from being further reduced.

The base of the dust suction fan 40 is detachably fixed to a left portion of a rotary shaft (a "second rotary shaft" in the present embodiment) 41 extending in the left-right direction. The rotary shaft 41 is rotatably fitted into the cylindrical portion 53 via a bearing 42.

A pulley (a "first pulley" in the embodiment) 43 is supported on the right portion of the rotary shaft 13 provided in the feeding chamber 3D, a pulley (a "second pulley" in the embodiment) 44 is supported on the right portion of the rotary shaft 41, and a belt 45 is wound around the pulley 43 and the pulley 44. This allows the output rotation of the engine to be transmitted to the dust collection fan 50 via the rotary shaft 13, the belt 45, and the like, thereby rotating the dust collection fan 40.

The tension of the belt 45 is adjusted to a predetermined tension by the tension arm 46. The tension arm 46 is formed of an arm 46A whose base is rotatably supported by a support shaft 55 and a pulley 46B rotatably supported by the tip end of the arm 46A.

The pulley 46B of the tension arm 46 is pressed against the belt 45 by a biasing mechanism 47 such as a coil spring attached to the support shaft 55. The upper end of the urging mechanism 47 is engaged with the cylindrical portion 53, and the lower end of the urging mechanism 47 is engaged with the arm 46A. This maintains the tension of the belt 45 at an appropriate level, and prevents the belt 45 from slipping off the pulley 44 or the like.

A belt cover 48 for covering the pulley 43, the pulley 44, and the belt 45 from the right side is provided on the right side of the belt 45, i.e., on the side of the operating section 5. This prevents the operator from releasing the belt 45 and the like, thereby improving safety. The upper portion of the belt cover 48 is supported by a support portion 58 provided on the tube portion 53.

As shown in fig. 10, the base of the arm 46A of the tension arm 46 is rotatably fitted around the cylindrical portion 53, and the movement in the left-right direction can be restricted by providing fixing rings 59 such as C-rings on both sides of the base of the arm 46A. This eliminates the need to separately form a member for supporting the arm 46A of the tension arm 46, and thus reduces the number of components.

Claims

1. A combine harvester, a harvesting pretreatment device (3) for harvesting the grain stems of the farmland is arranged at the front side of a machine body frame (1), a threshing device (4) for threshing the harvested grain stems is arranged at the left side at the rear part of the harvesting pretreatment device (3), a control part (5) for an operator to take is arranged at the right side at the rear part of the harvesting pretreatment device (3), an engine chamber (6) for carrying an engine is arranged below the control part (5),

the above-mentioned combine-harvester is characterized in that,

the harvesting pretreatment device (3) is provided with a feeding chamber (3D) for conveying the harvested straws to the threshing device (4),

a dust suction fan (40) which enables the air supply direction to face the left and right direction is arranged on the upper side of the frame body (10) of the feeding chamber (3D),

when the harvesting pretreatment device (3) is raised to a predetermined standby position, the dust suction fan (40) is positioned above the side panel (5B) of the operation unit (5).

2. A combine harvester according to claim 1,

the dust suction fan (40) is provided on the right front portion of the upper wall of the housing (10) in a plan view.

3. A combine harvester according to claim 1 or 2,

a first rotating shaft (13) extending in the left-right direction for transmitting the output rotation of the engine is provided in the middle part of the feed chamber (3D) in the front-rear direction,

a second rotating shaft (41) extending in the left-right direction is rotatably provided on the upper part of the fixing member (50),

a first pulley (43) is supported at a position of the first rotating shaft (13) extending to the right side of the right wall of the feeding chamber (3D),

a dust suction fan (40) is supported on the left part of the second rotating shaft (41), a second belt wheel (44) is supported on the right part of the second rotating shaft (41),

a belt (45) is wound around the first pulley (43) and the second pulley (44).

4. A combine harvester according to any one of claims 1 to 3,

the fixing member (50) includes: a fixing part (51) detachably fixed to the upper wall of the frame body (10); a column part (52) extending upward from the fixing part (51); and a cylindrical portion (53) extending in the left-right direction, in which the second rotation shaft (41) is fitted in the upper portion of the pillar portion (52), and the pillar portion (52) is formed in the shape of コ with an opening in the left portion when viewed in a transverse cross section.