TWI856061B - Combined harvester - Google Patents

Abstract

Disclosed is a combined harvester that collects dust flying from an auger device of a mowing pretreatment device to a control unit and exhausts air of a control unit heated by an engine to the outside. The mowing pretreatment device (3) includes a feeder house (3D) for transporting the harvested stalks to a threshing device (4); and a dust suction fan (40) is provided on the upper side of a casing (10) of the feeder house (3D) for directing the air supply direction to the left and right; when the mowing pretreatment device (3) is lifted to a predetermined standby position, the dust suction fan (40) is located above a side panel (5B) of the control unit (5).

Description

Combine harvester

The present invention relates to a combined harvester equipped with a harvesting pre-processing device.

In the past, the following technology is known, in order to collect the dust raised in the grain feeding screw device of the harvesting pre-processing device and discharge the dust retained in the feeding chamber to the outside, a suction fan is set on the right wall of the feeding chamber frame, and a dust suction port is set on the left wall of the feeding chamber frame (Patent Document 1).

[Prior Art Literature]

[Patent Literature]

[Patent Document 1] Japanese Patent Publication No. 2012-115161.

However, the technology disclosed in Patent Document 1 has the potential risk that the operating environment of the operating unit will be deteriorated due to dust flying from the grain feeding screw device of the harvesting pre-processing device to the operating unit. In addition, there is also the potential risk that the operating environment will be deteriorated due to the temperature of the operating unit rising due to the air heated by the engine.

Therefore, the subject of the present invention is to provide a combined harvester that can collect dust flying from the grain feeding screw device of the harvesting pre-processing device to the operating part, and exhaust the air of the operating part heated by the engine to the outside.

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

The invention of scheme 1 is a combined harvester, wherein a harvesting pre-processing device (3) for harvesting grain stalks from a farmland is arranged on the front side of a machine frame (1), a threshing device (4) for threshing the harvested grain stalks is arranged on the rear left side of the harvesting pre-processing device (3), an operating unit (5) for an operator to ride is arranged on the rear right side of the harvesting pre-processing device (3), and an engine room (6) for mounting an engine is arranged below the operating unit (5). ); the harvesting pre-processing device (3) is provided with a feeding chamber (3D) for conveying the harvested grain stems to the threshing device (4); a dust suction fan (40) for blowing air in the left and right directions is provided on the upper side of the frame (10) of the feeding chamber (3D); when the harvesting pre-processing device (3) is raised to a predetermined standby position, the dust suction fan (40) is located above the side panel (5B) of the operating part (5).

The invention of Scheme 2 is based on Scheme 1. In a top view, the dust collecting fan (40) is provided on the right front portion of the upper wall of the frame (10).

The invention of Scheme 3 is based on Scheme 1 or Scheme 2. A first rotating shaft (13) is provided in the middle of the front-rear direction of the feeding chamber (3D) for transmitting the output rotation of the engine and extending in the left-right 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 portion of the first rotating shaft (13) extending to the right side further than the right wall of the feeding chamber (3D); a dust suction fan (40) is supported at the left part of the second rotating shaft (41), and a second pulley (44) is supported at the right part of the second rotating shaft (41); a belt (45) is wound around the first pulley (43) and the second pulley (44).

字形狀。 The invention of scheme 4 is based on any one of schemes 1 to 3, wherein the fixing member (50) comprises: a fixing portion (51) which is fixed to the upper wall of the frame (10) in a detachable manner; a column portion (52) which extends upward from the fixing portion (51); and a cylinder portion (53) in which the second rotating shaft (41) is embedded in the upper portion of the column portion (52) and extends in the left-right direction; in a transverse cross-sectional view, the column portion (52) is formed as a left-open

Font shape.

According to the invention described in Scheme 1, the harvesting pre-treatment device (3) comprises: a scraping device (3A) for scraping the grain stalks and conveying them to the rear, a cutting knife device (3B) for cutting off 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). A dust suction fan (40) supported by a fixing member (50) is provided on the upper wall of the frame (10) of the feeding chamber (3D). When viewed from the side, the dust suction fan (40) is provided on the upper wall of the frame (10) of the feeding chamber (3D). When the processing device (3) rises to the standby position, the dust suction fan (40) is located above the side panel (5B) of the operating part (5), so the dust flying from the grain feeding screw device (3C) of the harvesting pre-processing device (3) to the operating part (5) is collected by the dust suction fan (40) and discharged to the outside of the operating part (5). In addition, the air in the operating part (5) heated by the engine is discharged to the outside of the operating part (5) by the dust suction fan (40), which can maintain the operating environment of the operating part (5) well.

According to the invention described in Scheme 2, in addition to the effects of the invention described in Scheme 1, a dust suction fan (40) is provided on the right front portion of the upper wall of the frame (10) when viewed from above, so that the operating environment of the operating unit (5) can be well maintained.

According to the invention described in scheme 3, in addition to the effects of the invention described in scheme 1 or 2, a first rotating shaft (13) is provided in the middle of the front-rear direction of the feeding chamber (3D) to transmit the output rotation of the engine and to extend in the left-right direction, and a second rotating shaft (41) is provided in the upper part of the fixing member (50) to be rotatable and to extend in the left-right direction, and a portion of the first rotating shaft (13) extending to the right side of the right wall of the feeding chamber (3D) is provided to rotate freely. The extended portion supports the first pulley (43), supports the dust suction fan (40) on the left side of the second rotating shaft (41), and supports the second pulley (44) on the right side of the second rotating shaft (41). 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 there is no need to separately set up a motor for rotating the dust suction fan (40).

字形狀，所以固定件(50)形成為輕且高剛性，能夠防止固定件(50)的變形。 According to the invention described in Scheme 4, in addition to the effects of the invention described in any one of Schemes 1 to 3, the fixing member (50) includes: a fixing portion (51) which is fixed to the upper wall of the frame (10) in a detachable manner; a column portion (52) which extends upward from the fixing portion (51); and a cylinder portion (53) in which the second rotating shaft (41) is embedded in the upper portion of the column portion (52) and extends in the left-right direction; in a transverse cross-sectional view, the column portion (52) is formed as a left-open

The fixing member (50) is in the shape of a letter "J", so that the fixing member (50) is formed to be light and highly rigid, and deformation of the fixing member (50) can be prevented.

1: Body frame

2: Driving device

3: Harvest pre-processing device

3A: Scraping device

3B: Cutter device

3C: Grain feeding spiral device

3D: Feeding room

4: Threshing device

5: Manipulation Department

5A:Front panel

5B: Side panel

6: Engine room

7: Grain box

8: Discharge tube

10: Frame

11: Rotation axis

12: Support shaft

13: Rotation axis (first rotation axis)

13A: Cylinder

13B: Bearing

14,15B: sprocket

15: Tension arm

15A: Arm

16,47: Afterburner mechanism

17,18,19: Idler wheel

20: Chain

21: Hood

22: Rotating body

23A,27A: Left sprocket

23B, 27B: right sprocket

25,41: Rotation axis

26: Rotating body

28A: Left plate chain

28B: right plate chain

29: Lath

30: Board

40: Vacuum fan

41: Rotation axis (second rotation axis)

42: Bearings

43: Pulley (first pulley)

44: Pulley (second pulley)

45: belt

46: Tension arm

46A: Arm

46B: Pulley

48:With hood

50:Fixers

51:Fixed part

52: Column

53: Cylinder

54: Strengthen muscles

55: Axle

56: Fan cover

56A: Box Department

56B: Installation Department

56C: Arms

57: Board

58: Support part

59:Fixed ring

[Figure 1] is a top view of a combine harvester.

[Figure 2] is a left side view of a combine harvester.

[Figure 3] is a front view of a combine harvester.

[Figure 4] is the left side view of the feeding chamber.

[Figure 5] is a front view of the feed chamber along the longitudinal section in the left and right directions.

[Figure 6] is the right side view of the feeding chamber.

[Figure 7] is a left side view along the longitudinal section in the front-rear direction of the feeding chamber.

[Figure 8] is a front view of the feed chamber equipped with a dust suction fan, viewed longitudinally in the left-right direction.

[Figure 9] is a left side view of the feed chamber equipped with a dust suction fan.

[Figure 10] is a front view of another tension arm.

As shown in Figures 1 to 3, the general-purpose combine harvester has a driving device 2 composed of a pair of left and right crawlers that travels on the soil surface at the lower side of the body frame 1, a harvesting pre-processing device 3 for harvesting grain stalks in the farmland is provided on the front side of the body frame 1, a threshing device 4 for threshing/screening the harvested grain stalks is provided on the left side behind the harvesting pre-processing device 3, and an operating unit 5 for the operator to ride is provided on the right side behind the harvesting pre-processing device 3.

A front panel 5A equipped with an operating lever and the like is provided at the front of the operating section 5, and a side panel 5B equipped with a gear lever and the like for accelerating and decelerating the driving speed of the driving device 2 is provided at the left portion of the operating section 5. In addition, an engine room 6 with a built-in engine is provided at the lower portion of the operating section 5, a grain box 7 for storing grains after threshing/screening treatment is provided at the rear side of the operating section 5, and a discharge cylinder 8 for discharging grains to the outside is provided at the rear side of the grain box 7. The discharge cylinder 8 includes a longitudinal discharge cylinder connected to the lower portion of the grain box 7 and extending in the up-down direction and a transverse discharge cylinder connected to the upper portion of the longitudinal discharge cylinder and extending in the front-rear direction.

The harvesting pre-treatment device 3 includes: a scraping device 3A, which scrapes and transports the grain stalks in the farmland while standing them up; a cutter device 3B, which cuts off the roots of the grain stalks transported to the rear; a grain feeding screw device 3C, which gathers the grain stalks transported to the rear to the left side; and a feeding chamber 3D, which transports the gathered grain stalks to the threshing device 4.

As shown in Figures 4 to 7, a rotating shaft 11 that transmits the output rotation of the engine and extends in the left-right direction is set at the rear of the left and right walls of the frame 10 of the feeding chamber 3D, and a first sprocket (omitted from the illustration) is supported on the left part of the rotating shaft 11. A support shaft 12 extending in the left-right direction is set at the front of the left wall of the frame 10, and a second sprocket (omitted from the illustration) is rotatably supported on the left part of the support shaft 12. In addition, a third sprocket (omitted from the illustration) that transmits the output rotation of the engine to the scraping device 3A, etc. is set in parallel on the left side of the support shaft 12 to the left of the second sprocket.

A rotating shaft (the "first rotating shaft" in the scope of the patent application) 13 extending in the left-right direction is installed approximately in the middle of the left and right walls of the frame 10. A sprocket 14 is supported on the left side of the rotating shaft 13 extending to the left side of the left wall of the frame 10.

The rotating shaft 13 is built into a cylindrical body 13A extending in the left-right direction via a bearing 13B. This prevents the rod being transported in the frame 10 from getting entangled with the rotating shaft 13.

The base of the arm 15A of the tension arm 15 is rotatably supported at the right side of the sprocket 14 in the left part of the rotating shaft 13 extending to the left side from the left wall of the frame 10. The tension arm 15 is formed by the arm 15A and the sprocket 15B rotatably supported at the front end of the arm 15A.

The rear part of the boosting mechanism 16 composed of a spring or the like is connected to the middle part of the arm 15A in the front-back direction. The front part of the boosting mechanism 16 is fixed to the upper part of the left wall of the frame 10. The tension arm 15 is set to a posture with the rear part tilted upward, and the boosting mechanism 16 is set to a posture with the rear part tilted downward. The arm 15A of the tension arm 15 and the boosting mechanism 16 are connected at a cross angle of approximately 90 degrees.

An idler wheel 17 is provided at the lower front portion of the left wall of the frame 10, and an idler wheel 18 and an idler wheel 19 are provided at the lower rear portion of the left wall of the frame 10 relative to the rotating shaft 13.

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

Thus, the drive chain 20 transmits the output rotation of the engine to the scraper 3A, etc., so that the rotating shaft 13 can rotate. In addition, the tension of the chain 20 is adjusted to an appropriate tension by the tension arm 15, and the winding of the chain 20 to the left and right and up and down directions is suppressed through the idler wheels 17 to 19.

The left wall of the frame 10 is provided with a cover 21 that covers the sprocket 14, the tension arm 15, the chain 20, etc., which can be detachably mounted. This can prevent the operator from touching the chain 20, etc.

The rotating body 22 is supported at the portion of the rotating shaft 11 located inside the frame 10, and the left sprocket 23A and the right sprocket 23B are arranged side by side at a predetermined interval in the left-right direction on the outer periphery of the rotating body 22. In addition, in this specification, the left sprocket 23A and the right sprocket 23B are collectively referred to as rear sprockets.

A rotating shaft 25 extending in the left-right direction is set up at the front of the left and right walls of the frame 10, a rotating body 26 is supported at the part of the rotating shaft 25 located inside the frame 10, and a left sprocket 27A and a right sprocket 27B are arranged side by side at a predetermined interval in the left-right direction on the outer periphery of the rotating body 26. In addition, in this specification, the left sprocket 27A and the right sprocket 27B are collectively referred to as the front sprocket

字狀地形成的板條29。藉此，能夠有效地向後方移送從進穀螺旋裝置3C被搬送至送料室3D的穀桿並搬送至脫粒裝置。此外，在本說明書中，將左板鏈條28A和右板鏈條28B統稱為板鏈條。 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.

The plate strip 29 formed in the shape of a letter "U". Thereby, the grain bar conveyed to the feeding chamber 3D from the grain feeding screw device 3C can be effectively transferred to the rear and conveyed to the threshing device. In addition, in this specification, the left plate chain strip 28A and the right plate chain strip 28B are collectively referred to as the plate chain strip.

As shown in Fig. 8 and Fig. 9, a dust suction fan 40 is provided at the front right side of the upper wall of the frame 10. Thus, when the feeding chamber 3D is raised to the standby position, the dust suction fan 40 can be moved to the upper side than the side panel 5B of the operating part 5 in a side view, so that the dust suction fan 40 can suck the dust scattered into the operating part 5 and discharge the dust to the outside of the operating part 5, and can also suck the air in the operating part 5 to cause convection, thereby releasing the hot air in the operating part 5 to the outside.

The vacuum fan 40 is supported by a fixing member 50, which is detachably fixed to a plate 30 provided so as to cover the front portion of the upper wall of the frame 10.

In front view, the plate 30 is formed into a roughly U-shaped shape with an opening at the lower side. The left foot extending in the vertical direction of the plate 30 is detachably fixed to the left wall of the frame 10, and the right foot extending in the vertical direction of the plate 30 is detachably fixed to the right wall of the frame 10.

The fixing member 50 includes: a rectangular fixing portion 51 which is detachably mounted on the upper surface of the plate 30; a column portion 52 which is formed on the right portion of the upper surface of the fixing portion 51 and extends in the vertical direction; and a cylindrical barrel portion 53 which is formed on the upper portion of the column portion 52 and extends in the horizontal direction.

字形狀。藉此，柱部52輕量且剛性高，能夠防止在柱部52產生的變形。 The shape of the column 52 in a transverse cross-section is formed to be substantially

Thus, the column 52 is lightweight and highly rigid, and deformation of the column 52 can be prevented.

In the front view, the lower part of the column 52 is formed to be inclined to the lower left, that is, it is formed to extend to the left as it moves toward the lower side. In addition, in the left side view, the fixing part 51 and the lower part of the column 52 are connected by a substantially triangular reinforcing rib 54. Thereby, the rigidity of the lower part of the column 52 is improved, and the deformation of the lower part of the column 52 can be further prevented.

A support shaft 55 extending in the left-right direction and rotatably supporting a tension arm 46 described later is provided in the middle of the right side of the column 52 in the up-down direction.

A circular plate 57 is provided on the left side of the cylinder 53 to detachably fix the fan cover 56 covering the outer periphery of the vacuum fan 40, and a supporting portion 58 is provided on the right side of the cylinder 53 to support the belt cover 48 described later.

The fan cover 56 is formed by a cylindrical box portion 56A, a circular mounting portion 56B provided at the right end of the box portion 56A, and three arm portions 56C connecting the mounting 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 to be smaller than the diameter of the circular base of the radially erected blades of the vacuum fan 40. Thus, the plate 57 and the like will not become an obstacle, thereby preventing the vacuum fan 40 from reducing its vacuum efficiency.

In addition, when viewed from the left side, the column 52 of the fixing member 50 and an arm 56C of the fan cover 56 are arranged at opposite positions. Thus, the column 52 will not become an obstacle, thereby further preventing the dust collection efficiency of the dust collection fan 40 from being reduced.

The base of the vacuum fan 40 is detachably fixed to the left side of a rotating shaft (the "second rotating shaft" in the scope of the patent application) 41 extending in the left-right direction. The rotating shaft 41 is rotatably embedded in the cylinder 53 via a bearing 42.

A pulley (the "first pulley" in the scope of the patent application) 43 is supported on the right side of the rotating shaft 13 provided in the feeding chamber 3D, and a pulley (the "second pulley" in the scope of the patent application) 44 is supported on the right side of the rotating shaft 41. A belt 45 is wound around the pulleys 43 and 44. In this way, the output rotation of the engine is transmitted to the dust suction fan 40 via the rotating shaft 13, the belt 45, etc., so that the dust suction fan 40 can rotate.

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

The pulley 46B of the tension arm 46 is pressed against the belt 45 by a force-adding mechanism 47 such as a helical spring mounted on the support shaft 55. The upper end of the force-adding mechanism 47 is engaged with the cylinder 53, and the lower end of the force-adding mechanism 47 is engaged with the arm 46A. In this way, the tension of the belt 45 is maintained at an appropriate tension, which can prevent the belt 45 from falling off the pulley 44, etc.

A belt cover 48 is provided on the right side of the belt 45, i.e., on the side of the operating part 5, to cover the pulley 43, the pulley 44, and the belt 45 from the right side. This can prevent the operator from releasing the belt 45, etc., thereby improving safety. In addition, the upper part of the belt cover 48 is supported by the supporting part 58 provided on the cylinder 53.

As shown in FIG. 10 , the base of the arm 46A of the tension arm 46 is rotatably fitted to the cylinder 53, and fixing rings 59 such as C rings are provided on both sides of the base of the arm 46A to limit the movement in the left and right directions. Therefore, there is no need to form a separate component to support the arm 46A of the tension arm 46, thereby reducing the number of accessories.

10: Frame

13: Rotation axis (first rotation axis)

13A: Cylinder

13B: Bearing

14: Sprocket

15: Tension arm

30: Board

40: Vacuum fan

41: Rotation axis (second rotation axis)

42: Bearings

43: Pulley (first pulley)

44: Pulley (second pulley)

45: belt

46A: Arm

46B: Pulley

47: Afterburner mechanism

48:With hood

50:Fixers

51:Fixed part

52: Column

53: Cylinder

54: Strengthen muscles

55: Axle

56: Fan cover

57: Board

58: Support part

Claims (5)

A combined harvester is provided with a harvesting pre-processing device (3) for harvesting grain stalks from a farmland on the front side of a machine frame (1), a threshing device (4) for threshing the harvested grain stalks is provided on the left side behind the harvesting pre-processing device (3), an operating unit (5) for an operator to ride on is provided on the right side behind the harvesting pre-processing device (3), and an engine room (6) for mounting an engine is provided below the operating unit (5); the harvesting pre-processing device (3) is provided with a The harvested grain stems are transported to the aforementioned threshing device (4) in a feeding chamber (3D); a dust suction fan (40) with air supply facing the left and right direction is provided on the upper side of the frame (10) of the aforementioned feeding chamber (3D); when the aforementioned harvesting pre-processing device (3) is raised to a predetermined standby position, the aforementioned dust suction fan (40) is located above the side panel (5B) of the operating part (5); the aforementioned dust suction fan (40) sucks the air in the aforementioned operating part (5) to cause convection. The combine harvester as described in claim 1, wherein the dust suction fan (40) is provided on the right front portion of the upper wall of the frame (10) when viewed from above. A combined harvester as described in claim 1 or 2, wherein a first rotating shaft (13) for transmitting the output rotation of the engine and extending in the left-right direction is provided in the middle 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 portion of the first rotating shaft (13) extending further to the right than the right wall of the feed chamber (3D); a dust suction fan (40) is supported at the left part of the second rotating shaft (41), and a second pulley (44) is supported at the right part of the second rotating shaft (41); a belt (45) is wound around the first pulley (43) and the second pulley (44). A combine harvester as recited in claim 1 or 2, wherein the fixing member (50) comprises: a fixing portion (51) which is fixed to the upper wall of the frame (10) in a detachable manner; a column portion (52) which extends upward from the fixing portion (51); and a cylinder portion (53) in which a second rotating shaft (41) is embedded in the upper portion of the column portion (52) and extends in the left-right direction; in a transverse cross-sectional view, the column portion (52) is formed as a left-open

Font shape. A combine harvester as described in claim 3, wherein the fixing member (50) comprises: a fixing portion (51) which is fixed to the upper wall of the frame (10) in a detachable manner; a column portion (52) which extends upward from the fixing portion (51); and a cylinder portion (53) in which the second rotating shaft (41) is embedded in the upper portion of the column portion (52) and extends in the left-right direction; in a transverse cross-sectional view, the column portion (52) is formed as a left-open

Font shape.