combine

Abstract

We propose a combine harvester that allows the operator in the control room to easily adjust the wind speed of the winnowing machine's sorting air without having to dismount. [Solution] Below the threshing drum of the threshing machine, an oscillating sorting device for sorting grains leaking from the threshing drum and a winnowing machine for blowing sorting air onto the oscillating sorting device are provided. The winnowing machine is formed by a rotating shaft extending in the left-right direction, a pulley around the left side of the rotating shaft around which a belt that transmits the output rotation of the engine is wound, and blades supported at predetermined intervals in the circumferential direction of the rotating shaft. The pulley is formed by a left plate fixed to the rotating shaft, a right plate fixed so as to be slidable in the left-right direction along the rotating shaft, and a moving device (63) that slides the right plate. In a side view, a winnowing machine lever (52) for operating the moving device (63) is provided on the right wall of the threshing machine behind the driver's seat and in front of the grain lifting cylinder, and the lower part of the winnowing machine lever (52) and the front part of the arm (63A) of the moving device (63) are connected by a winnowing machine rod (53).

Description

Technical Field

[0001] The present invention relates to a combine harvester having a winnower that blows sorting air to a rocking sorting device for sorting threshed grains.

Background Art

[0002] Conventionally, a technique for adjusting the wind speed of sorting air blown from a winnower according to the type and moisture content of harvested cereal straws is known. (See Patent Document 1)

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the conventional technique, when adjusting the wind speed of sorting air blown from the winnower, an operator on the operator's cab has to move to the vicinity of the threshing device and operate the winnower lever after getting off the operator's cab once, resulting in a problem of low efficiency of the harvesting work.

[0005] Therefore, the present invention proposes a combine harvester that allows an operator on the operator's cab to easily adjust the wind speed of sorting air of the winnower from the operator's cab without getting off the cab.

Means for Solving the Problems

[0006] The present invention that solves the above problems is as follows. In other words, the invention described in claim 1 is a combine harvester in which a harvesting device (3) for cutting grain stalks is provided at the front of the machine frame (1) on which the engine is mounted, a threshing device (4) for threshing and sorting the grain stalks is provided to the rear left of the harvesting device (3), a control unit (5) for the operator is provided to the rear right of the harvesting device (3), a grain tank (7) for storing grain is provided behind the control unit (5), and the right wall of the threshing device (4) and the left wall of the grain tank (7) are connected by a grain lifting cylinder (20), Below the threshing drum (11) of the threshing device (4), there is an oscillating sorting device (15) for sorting grains leaking from the threshing drum (11), and a winnowing machine (16) for blowing sorting air into the oscillating sorting device (15). The winnowing machine (16) is formed by a rotating shaft (60) extending in the left-right direction, a pulley (61) around which a belt that transmits the output rotation of the engine is wound on the left side of the rotating shaft (60), and blades (62) supported at predetermined intervals in the circumferential direction of the rotating shaft (60), with the pulley (61) fixed to the rotating shaft (60) by a left-side plate (61 The combine harvester is characterized by comprising a right side plate (61R) fixed to the rotation axis (60) so as to be slidable in the left-right direction, and a moving device (63) for sliding the right side plate (61R), and in a side view, a winnowing lever (52) for operating the moving device (63) is provided on the right wall of the threshing device (4) behind the driver's seat (5A) and in front of the grain lifting cylinder (20), and the lower part of the winnowing lever (52) and the front part of the arm (63A) of the moving device (63) are connected by a winnowing rod (53).

[0007] The invention described in claim 2 is the combine harvester according to claim 1, wherein, in a side view, the winnowing lever (52) is positioned above the muffler (31) into which the exhaust gas of the engine is supplied, and below the upper wall of the threshing device (4).

[0008] The invention described in claim 3 is a combine harvester according to claim 1 or 2, wherein the winnowing rod (53) is formed by a rod (54) extending vertically to the right side of the right wall of the threshing device (4) and a connecting rod (55) extending horizontally to the lower side of the lower wall of the threshing device (4), a left arm (55L) and a right arm (55R) extending to the rear are provided on both sides of the connecting rod (55), the lower part of the rod (54) and the rear part of the right arm (55R) are rotatably connected by a right pin (56) extending horizontally, and the front part of the arm (63A) and the rear part of the left arm (55L) are rotatably connected by a left pin (57) extending horizontally.

[0009] The invention described in claim 4 is the combine harvester according to claim 3, wherein, in a rear view, the rod (54) is positioned to the left of the center of the muffler (31) in the left-right direction.

[0010] The invention described in claim 5 is a combine harvester according to claim 4, wherein a housing (51) is provided to house the winnowing lever (52), and the front wall, through which the winnowing lever (52) is inserted, is formed to be angled upwards at the rear. [Effects of the Invention]

[0011] According to the invention described in claim 1, a threshing device (4) is provided with a rocking sorting device (15) for sorting grains that leak out of the rocking sorting device (11) on the lower side of the threshing drum (11), and a winnowing machine (16) for blowing sorting air to the rocking sorting device (15). The winnowing machine (16) is formed by a rotating shaft (60) extending in the left-right direction, a pulley (61) around which a belt that transmits the output rotation of the engine is wound on the left side of the rotating shaft (60), and blades (62) supported at predetermined intervals in the circumferential direction of the rotating shaft (60). The pulley (61) is fixed to the rotating shaft (60) and slides in the left-right direction along the rotating shaft (60). The right side plate (61R) is fixed to be movable, and the moving device (63) slides the right side plate (61R). In a side view, a winnowing lever (52) for operating the moving device (63) is provided on the right wall of the threshing device (4) behind the driver's seat (5A) and in front of the grain lifting cylinder (20). The lower part of the winnowing lever (52) and the front part of the arm (63A) of the moving device (63) are connected by a winnowing rod (53). As a result, the operator sitting in the driver's seat (5) can easily adjust the wind speed of the winnowing machine (16) from the driver's seat (5) without having to dismount from the driver's seat (5).

[0012] According to the invention described in claim 2, in addition to the effects of the invention described in claim 1, in a side view, the winnowing lever (52) is positioned above the muffler (31) into which the engine's exhaust gas is supplied, and below the upper wall of the threshing device (4), so that the winnowing lever (52) can be prevented from coming into contact with external trees, etc. Furthermore, the winnowing lever (52) can be prevented from being heated by the air heated by the muffler (31).

[0013] According to the invention of claim 3, in addition to the effects of the invention of claim 1 or 2, the winnowing rod (53) is formed by a rod (54) extending vertically to the right side of the right wall of the threshing device (4) and a connecting rod (55) extending horizontally to the lower side of the lower wall of the threshing device (4). A left arm (55L) and a right arm (55R) are provided on both sides of the connecting rod (55) and extend to the rear. The lower part of the rod (54) and the rear part of the right arm (55R) are rotatably connected by a right pin (56) extending horizontally, and the front part of the arm (63A) and the rear part of the left arm (55L) are rotatably connected by a left pin (57) extending horizontally. As a result, the operator can more easily adjust the wind speed of the sorting air from the winnowing machine (16) from the control unit (5).

[0014] According to the invention described in claim 4, in addition to the effects of the invention described in claim 3, in a rear view, the rod (54) is positioned to the left of the center in the left-right direction of the muffler (31), so that the rod (54) does not extend into the space formed between the threshing device (4) and the grain tank (7), and the space can be used effectively.

[0015] According to the invention of claim 5, in addition to the effects of the invention of claim 4, a housing (51) is provided to house the winnowing lever (52), and the front wall, through which the winnowing lever (52) is inserted, is formed to be angled upwards at the rear, so that the operator can easily see the winnowing lever (52). [Brief explanation of the drawing]

[0016] [Figure 1] This is a left side view of a combine harvester. [Figure 2] This is a plan view of a combine harvester. [Figure 3] This is a longitudinal cross-sectional view of the threshing machine in the front-to-back direction. [Figure 4] This is a right-side view of the threshing machine and the main components of the control unit. [Figure 5] This is a plan view of the main components of the threshing machine and control unit. [Figure 6] This is a front view of the winnowing lever and the winnowing machine. [Figure 7]It is a left side view of the winnowing lever and the winnowing pan. [Figure 8] It is an explanatory drawing of the handle for opening and closing the threshing cover. [Figure 9] It is an explanatory drawing of the interior cover installed inside the threshing cover.

Mode for Carrying Out the Invention

[0017] As shown in FIGS. 1 and 2, a traveling device 2 consisting of a pair of left and right crawlers for traveling on the field surface is provided below the body frame 1 of the combine, a harvesting device 3 for harvesting the grain straw in the field is provided in front of the body frame 1, and a threshing device 4 for threshing and sorting the harvested grain straw is provided on the left rear side of the harvesting device 3. A cab 5 for an operator to board is provided on the right rear side of the harvesting device 3.

[0018] An engine room 6 for storing the engine is provided below the cab 5, a grain tank 7 for storing the threshed and sorted grain is provided behind the cab 5, and a discharge auger 8 consisting of a vertical lift part for discharging the grain to the outside and a horizontal discharge part extending in the front-rear direction is provided behind the grain tank 7.

[0019] As shown in FIG. 3, on the upper part of the threshing device 4, a handling cylinder 11 for threshing the grain straw conveyed from the harvesting device 3 by the feed chain 10 is provided. A receiving net 12 is provided below the handling cylinder 11. Also, a handling cylinder cover 13 is provided above the handling cylinder 11, and a clamping rod 14 for biasing the feed chain 10 downward is provided at the lower part of the left wall of the handling cylinder cover 13.

[0020] Below the receiving net 12, a rocking sorting device 15 is provided for sorting the grains processed by the threshing drum 11. Above the rocking sorting device 15, in order from the front, are a transfer rack 15A made of plate-like bodies, a fixed sheave 15B made of multiple plate-like bodies arranged at predetermined intervals in the front-to-back direction with an upward sloping rearward incline, a variable sheave 15C made of multiple plate-like bodies arranged at predetermined intervals in the front-to-back direction with a variable upward sloping rearward incline angle, and a straw rack 15D made of multiple plate-like bodies arranged at predetermined intervals in the left-to-right direction. Below the rocking sorting device 15, a sorting net 15E is provided for sorting the grains that leak down from the fixed sheave 15B and the variable sheave 15C.

[0021] Below the oscillating sorting device 15, in order from the front, there is a winnowing machine 16 that blows sorting air toward the fixed sieve 15B and the variable sieve 15C, a first receiving tub 17 that collects grains that leak down from the fixed sieve 15B and the variable sieve 15C (hereinafter referred to as first-grade material), and a second receiving tub 18 that collects grains with branches and stems attached that leak down from the straw rack 15D (hereinafter referred to as second-grade material).

[0022] The first batch of grain is lifted into the grain tank 7 by the first grain lifting cylinder (the "grain lifting cylinder" in the claim) 20, and the second batch of grain is lifted into the second processing cylinder 21, which is located to the right of the threshing cylinder 11, by the second grain lifting cylinder (not shown).

[0023] A dust removal cylinder 22 is provided at the rear of the second processing cylinder 21 to transport straw debris mixed in with the second processing material to the rear. In addition, a dust removal fan 23 is provided above the straw rack 15D of the oscillating sorting device 15 to suck up straw debris and discharge it to the outside.

[0024] A straw conveying device 24 is provided at the rear of the feed chain 10 to transport the threshed grain stalks backward. Below the straw conveying device 24, a pair of front and rear cutters 25 are provided to shred the straw grain stalks that fall from the straw conveying device 24.

[0025] As shown in Figures 4 and 5, the exhaust gas from the engine is purified of impurities by an exhaust gas purification device (not shown) located in the engine room 6, and then sent through the exhaust pipe 30 to a muffler 31 that reduces noise. The exhaust gas sent to the muffler 31 is then sent through an exhaust pipe 32, which is formed to rise at the rear, to a tailpipe 33, and then exhausted to the outside from the rear of the tailpipe 33. The engine's output rotation is transmitted to the harvesting device 3 and the threshing device 4 via the countershaft 34.

[0026] A side panel 40 is provided to the left of the cockpit 5A of the control unit 5. A main shift lever 41 is provided at the front of the side panel 40 for operating the continuously variable transmission (CVT) which increases and decreases the engine's output speed and switches the direction of rotation. A sub-shift lever 42 is provided to the right of the main shift lever 41 for operating the transmission which increases and decreases the output speed output from the CVT.

[0027] Behind the main transmission lever 41, there is a harvesting / threshing lever 43 for operating the harvesting clutch, which transmits the engine's output rotation to the harvesting device 3, and the threshing clutch, which transmits the engine's output rotation to the threshing device 4. To the front left of the harvesting / threshing lever 43, there is a discharge lever 44 for operating the discharge clutch, which transmits the engine's output rotation to the discharge auger 8.

[0028] The vertical frame 46 located on the left rear of the control unit 5 extends upward from the machine frame 1, then extends toward the threshing device 4, and is connected to a fixing member 47 that extends to the right and is provided on the right wall of the threshing device 4. This increases the rigidity of the control unit 5, suppressing deformation that occurs in the control unit 5 due to vibrations during operation, and also allows the lateral distance between the threshing device 4 and the control unit 5 to be maintained at a predetermined distance.

[0029] Behind the fixing member 47, and in front of the first grain lifting cylinder 20, a fixing member 50 is provided that extends to the right from the right wall of the threshing device 4. A housing 51 is provided on the right side of the fixing member 50, and a winnowing lever 52 is attached to the housing 51 to increase or decrease the rotation speed of the winnowing machine 16 and thereby increase or decrease the sorting airflow. This allows an operator seated in the control unit 5 to adjust the wind speed of the sorting airflow from the winnowing machine 16 by operating the winnowing lever 52 from the control unit 5.

[0030] The front wall of the housing 51 is formed to be slightly upward sloping towards the rear, and the winnowing lever 52 extends forward of the opening formed in the front wall of the housing 51. This allows the operator seated in the control unit 5 to easily see the winnowing lever 52.

[0031] As shown in Figures 6 and 7, the winnowing machine 16 is formed of a rotating shaft 60 extending in the left-right direction, a pulley 61 fixed to the left side of the rotating shaft 60, and a plurality of blades 62 that are fixed to the rotating shaft 60 and extend radially with a predetermined length in the left-right direction. A belt (not shown) that transmits the output rotation of the counter shaft 34 is wrapped around the pulley 61. This allows the engine to be driven to rotate the winnowing machine 16 and blow the sorted air toward the fixed sheave 15B, etc.

[0032] The pulley 61 is formed from a left plate 61L fixed to the left side of the rotating shaft 60 and a right plate 61R fixed to the rotating shaft 60 so as to be slidable in the left-right direction. A moving device 63 is attached to the right side of the right plate 61R, which slides the right plate 61R in the axial direction of the rotating shaft 60 to move it in the left-right direction.

[0033] The lower part of the winnowing lever 52 and the front part of the arm 63A of the moving device 63 are connected by the winnowing rod 53.

[0034] The winnowing rod 53 is formed from a rod 54 extending forward and downward from the lower part of the winnowing lever 52, and a connecting rod 55 that connects the lower part of the rod 54 to the front part of the arm 63A extending forward and downward from the moving device 63. A right arm 55R extending backward and downward is provided on the right side of the connecting rod 55, and a left arm 55L extending backward and upward is provided on the left side of the connecting rod 55. The connecting rod 55 is rotatably supported by a support member (not shown) formed on the lower wall of the threshing device 4.

[0035] The lower part of the rod 54 and the rear part of the right arm 55R are rotatably connected by a pin (the "right pin" in the claim) 56 that extends in the left-right direction, and the rear part of the left arm 55L and the front part of the arm 63A are rotatably connected by a pin (the "left pin" in the claim) 57 that extends in the left-right direction. This allows the right plate 61R to be slid in the axial direction of the rotation shaft 60 via the moving device 63 by operating the winnowing lever 52, thereby widening or narrowing the gap between the left plate 61L and the right plate 61R and adjusting the winding diameter of the belt wound around the pulley 61.

[0036] Rod 54 and right arm 55R are positioned on the right side of the right wall of the threshing device 4, connecting rod 55 is positioned on the lower side of the lower wall of the threshing device 4, and left arm 55L and arm 63A are positioned on the left side of the left wall of the threshing device 4.

[0037] In this embodiment, when the front part of the winnowing lever 52 is moved upward, the rod 54 moves downward, and the connecting rod 55 rotates clockwise in the axial view of the connecting rod 55, moving the arm 63A backward. This moves the right side plate 61R to the right along the rotation axis 60, widening the gap between the left side plate 61L and the right side plate 61R, reducing the winding diameter of the belt wound around the pulley 61, and increasing the output rotational speed of the rotation axis 60, thereby increasing the wind speed of the sorting air blown from the winnowing machine 16.

[0038] On the other hand, when the front part of the winnowing lever 52 is moved downward, the rod 54 moves upward, causing the connecting rod 55 to rotate counterclockwise in the axial view of the connecting rod 55 and move the arm 63A forward. This moves the right plate 61R to the left along the rotation axis 60, narrowing the gap between the left plate 61L and the right plate 61R, increasing the winding diameter of the belt wound around the pulley 61, thereby reducing the output rotational speed of the rotation axis 60 and slowing down the wind speed of the sorting air blown from the winnowing machine 16.

[0039] The winnowing lever 52 is located near the rear of the side panel 40. This allows the operator to adjust the strength of the winnowing airflow from the winnowing machine 16 by operating the winnowing lever 52 from the control unit 5.

[0040] As shown in Figures 4 and 5, the winnowing lever 52 is positioned above the muffler 31 at a predetermined distance. This prevents the operator from accidentally coming into contact with the muffler 31 and also prevents the winnowing lever 52 from being heated by the heated air surrounding the muffler 31.

[0041] In a side view, it is preferable that the winnowing lever 52 be positioned above the muffler 31 and below the upper wall of the threshing device 4. This prevents the winnowing lever 52 from coming into contact with external trees or other objects. Furthermore, it is even more preferable that the winnowing lever 52 be positioned above the rotating shaft 11A extending in the front-rear direction of the threshing drum 11 and below the upper wall of the threshing device 4. This further prevents the winnowing lever 52 from being heated by the muffler 31.

[0042] In a rear view, it is preferable to position the rod 54 between the right wall of the threshing device 4 and the muffler 31. This prevents the rod 54 from protruding into the space formed between the threshing device 4 and the grain tank 7, allowing for effective use of the space.

[0043] As shown in Figure 8, a U-shaped handle 70 is provided on the right side of the threshing drum cover 13 at a predetermined distance in the front-to-back direction. This allows the right side of the threshing drum cover 13 to be easily opened around a pivot shaft 71 that extends in the front-to-back direction and rotatably supports the left side of the threshing drum cover 13.

[0044] Furthermore, in a rear view, the handle 70 is positioned above and to the left of the tailpipe 33 at a predetermined distance. This prevents the handle 70 from being heated by the heated air surrounding the tailpipe 33.

[0045] As shown in Figure 9, the inner circumference of the threshing drum cover 13 is provided with a removable cover 75 that is formed in a substantially arc shape along the inner circumference of the threshing drum cover 13, and the inner circumference of the cover 75 is provided with a plurality of dust discharge guides 76 that guide the grain stalks to the rear. As a result, if the dust discharge guides 76 are damaged, the cover 75 can be replaced, reducing the time that work is interrupted. [Explanation of Symbols]

[0046] 1. Aircraft frame 3 Reaping device 4. Threshing machine 5. Control Unit 5A Cockpit 7 Glen Tank 11. Handle 15. Oscillating sorting device 16 Karawino 20 No. 1 fried grain cylinder (fried grain cylinder) 31 Muffler 51 cabinets 52 Winnowing lever 53 Winnowing Rod 54 rods 55 connecting rods 55L Left Arm 55R Right Arm 56 pins (right pin) 57 pins (left pin) 60 Rotation axis 61 Pulley 61L left side plate 61R Right side plate 62 feathers 63 Mobile device 63A Arm

Claims

1. In a combine harvester, a cutting device (3) for cutting grain stalks is provided at the front of the machine frame (1) on which the engine is mounted, a threshing device (4) for threshing and sorting the grain stalks is provided to the rear left of the cutting device (3), a control unit (5) for the operator is provided to the rear right of the cutting device (3), a grain tank (7) for storing grain is provided behind the control unit (5), and the right wall of the threshing device (4) and the left wall of the grain tank (7) are connected by a grain lifting cylinder (20), Below the threshing cylinder (11) of the threshing apparatus (4), there is an oscillating sorting device (15) for sorting grains that leak down from the threshing cylinder (11), and a winnowing machine (16) for blowing sorting air into the oscillating sorting device (15). The winnowing machine (16) is formed by a rotating shaft (60) extending in the left-right direction, a pulley (61) around which a belt that transmits the output rotation of the engine is wound on the left side of the rotating shaft (60), and blades (62) supported at predetermined intervals in the circumferential direction of the rotating shaft (60). The pulley (61) is formed by a left plate (61L) fixed to a rotating shaft (60), a right plate (61R) fixed to slide freely in the left-right direction along the rotating shaft (60), and a moving device (63) for sliding the right plate (61R). In a side view, the winnowing lever (52) for operating the moving device (63) is provided on the right wall of the threshing device (4) behind the driver's seat (5A) and in front of the grain lifting cylinder (20). A combine harvester characterized in that the lower part of the winnowing lever (52) and the front part of the arm (63A) of the moving device (63) are connected by a winnowing rod (53).

2. The combine harvester according to claim 1, wherein, in a side view, the winnowing lever (52) is positioned above the muffler (31) into which the exhaust gas of the engine is supplied, and below the upper wall of the threshing device (4).

3. The winnowing rod (53) is formed by a rod (54) extending vertically to the right side of the right wall of the threshing device (4), and a connecting rod (55) extending horizontally to the lower side of the lower wall of the threshing device (4). A left arm (55L) and a right arm (55R) extending to the rear are provided on both sides of the connecting rod (55). The combine harvester according to claim 1 or 2, wherein the lower part of the rod (54) and the rear part of the right arm (55R) are rotatably connected by a right pin (56) extending in the left-right direction, and the front part of the arm (63A) and the rear part of the left arm (55L) are rotatably connected by a left pin (57) extending in the left-right direction.

4. The combine harvester according to claim 3, wherein, in a rear view, the rod (54) is positioned to the left of the center of the muffler (31) in the left-right direction.

5. The combine harvester according to claim 4, wherein a housing (51) is provided to house the winnowing lever (52), and the front wall, through which the winnowing lever (52) is inserted, is formed to be angled upward at the rear.

Images