JP7003961B2 - combine - Google Patents

Description

The present invention relates to a combine equipped with a pre-cutting device.

Conventionally, a suction fan is installed on the right wall of the frame of the feeder house in order to collect the dust that winds up in the auger device of the pre-cutting treatment device and to discharge the dust that stays in the feeder house to the outside. The technology is known for the dust suction port on the left wall of the frame of the house. (Patent Document 1)

Japanese Unexamined Patent Publication No. 2012-115161

However, according to the technique disclosed in Patent Document 1, the dust that winds up in the auger device can be collected to maintain a good operating environment of the control unit, but the engine mounted below the control unit heats the control unit. There was a risk that the temperature of the control unit would rise due to the generated air and the operating environment would deteriorate.

Therefore, an object of the present invention is to provide a combine capable of efficiently collecting dust that winds up in the auger device of the pre-cutting treatment device and exhausting the air heated by the engine to the outside through the feeder house. To provide.

The present invention that solves the above problems is as follows.

The invention according to claim 1 includes an engine room (6) for accommodating an engine, a cutting blade device (3B) for cutting a grain, a threshing device (4) for threshing a grain, and the cutting blade device (3B). The feeder house (3D) that supplies the grain harvester cut by the above to the threshing device (4), and the engine room (6) side in the feeder house (3D) at a portion near the engine when viewed from the side of the machine. The dust removal fan (40,70) is provided with a dust exhaust fan (40,70) that supplies the air sucked from the feeder house (3D) into the feeder house (3D) and discharges the dust in the feeder house (3D). It is a combine that operates when the feeder house (3D) is driven and continues to operate for a predetermined time from the time when the drive of the feeder house (3D) or the threshing device (4) is stopped .

According to the first aspect of the present invention, dust in the feeder house (3D) can be efficiently discharged, and drying in the feeder house (3D) can be promoted. Further, the energy consumed by the operation of the dust exhaust fan (40, 70) can be reduced.

It is a plan view of a combine. It is a left side view of the combine. It is a front view of a combine. It is a left side view of the feeder house of 1st Embodiment. It is the front view which made the cross section in the vertical direction in the left-right direction of the feeder house. It is a right side view of the feeder house. It is a left side view which cross-sections in the vertical direction in the front-rear direction of the feeder house. It is a front view which cross-sections in the vertical direction in the left-right direction of the feeder house, and is the explanatory view of the relationship between a fan and a slat. It is a front view which is the cross section in the vertical direction in the left-right direction of the feeder house, and is the explanatory view of the relationship between a fan and a chain. It is a left side view of the feeder house, and is an explanatory view of a dust outlet. It is the front view which made the cross section of the feeder house in the vertical direction in the left-right direction, and is the explanatory view of the burr part of a dust outlet. It is a left side view of the feeder house, and is an explanatory view of other dust outlets. It is a front view of a tension arm. It is a front view of another tension arm. It is a top view of the feeder house of 2nd Embodiment. It is a left side view of the state where the feeder house is lowered. It is a left side view of the feeder house of 3rd Embodiment. It is the front view which made the cross section in the vertical direction in the left-right direction of the feeder house. It is a left side view of another feeder house of 3rd Embodiment. It is the front view which made the cross section in the vertical direction in the left-right direction of the feeder house.

As shown in FIGS. 1 to 3, in the general-purpose combine, a traveling device 2 composed of a pair of left and right crawler traveling on the soil surface is provided on the lower side of the machine frame 1, and the grain culm in the field is harvested on the front side of the machine frame 1. A pre-cutting processing device 3 is provided, a threshing device 4 for threshing and sorting harvested culms is provided on the rear left side of the pre-cutting processing device 3, and an operator is on the rear right side of the pre-cutting processing device 3. The control unit 5 is provided.

An engine room 6 for incorporating an engine is provided in the lower part of the control unit 5, and a grain tank 7 for storing threshed and sorted grains is provided in the rear side of the control unit 5. On the rear side, a discharge cylinder 8 for discharging grains to the outside is provided. The discharge cylinder 8 is formed of a vertical discharge cylinder that communicates with the lower part of the grain tank 7 and extends in the vertical direction, and a horizontal discharge cylinder that communicates with the upper part of the vertical discharge cylinder and extends in the front-rear direction.

The pre-cutting treatment device 3 includes a scraping device 3A that scrapes and transports the grain culms in the field while standing upright, a cutting blade device 3B that cuts the root of the grain culms transported backward, and a rearward transport device. It is composed of an auger device 3C that collects the collected culms on the left side and a feeder house 3D that conveys the collected culms to the threshing device 4.

As shown in FIGS. 4 to 6, at the rear of the left and right walls of the frame body 10 of the feeder house 3D, a rotation shaft (“rear rotation shaft” according to claim) 11 extending in the left-right direction in which the output rotation of the engine is transmitted is transmitted. Is erected, and a first sprocket (not shown) is supported on the left side of the rotating shaft 11. A support shaft 12 extending in the left-right direction is provided on the front portion of the left wall of the frame body 10, and a second sprocket (not shown) is rotatably supported on the left portion of the support shaft 12. A third sprocket (not shown) for transmitting the output rotation of the engine to the scraping device 3A or the like is juxtaposed on the left side portion of the left portion of the support shaft 12 with respect to the second sprocket.

A rotation shaft 13 extending in the left-right direction is erected at a substantially intermediate portion of the left and right walls of the frame body 10. A sprocket 14 is supported on the left portion of the rotating shaft 13 extending to the left side of the left wall of the frame body 10, and the right portion of the rotating shaft 13 extending to the right side of the right wall of the frame body 10 is supported by the sprocket 14. A fan 40 that sucks dust is supported. Further, the rotating shaft 13 is housed in a cylindrical cylinder 13A extending in the left-right direction via a bearing 13B. As a result, it is possible to prevent the grain culm transferred in the frame 10 from being entangled with the rotating shaft 13.

A base portion of the arm 15A forming the tension arm 15 is rotatably supported on a portion on the left side of the rotating shaft 13 extending to the left side of the left wall of the frame body 10 with respect to the sprocket 14. The tension arm 15 is formed of an arm 15A and a sprocket 15B rotatably supported by the tip of the arm 15A.

The rear portion of the urging means 16 made of a spring or the like is connected to the intermediate portion of the arm 15A in the front-rear direction. The front portion of the urging means 16 is fixed to the upper part of the left wall of the frame body 10. The tension arm 15 is provided in a rear-up posture, the urging means 16 is provided in a rear-down posture, and the arm 15A of the tension arm 15 and the urging means 16 are connected at an intersection angle of approximately 90 degrees. ..

As shown in FIG. 13, the base portion of the arm 15A of the tension arm 15 is externally fitted to the left portion of the tubular body 13A, and the position is positioned in the left-right direction by the collars 13C provided on both sides of the base portion of the arm 15A. ing. As a result, it is not necessary to separately provide a member for supporting the tension arm 15, and the number of member points can be reduced. Further, as shown in FIG. 14, a tubular connecting body 15C having a right wall is formed at the base of the arm 15A of the tension arm 15. A connecting body 15C of a tension arm 15 is fitted onto the left portion of the rotating shaft 13 via a bearing 13D, and the position is positioned in the left-right direction by collars 13E provided on both sides of the bearing 13D. As a result, the connecting body 15C of the tension arm 15 can be efficiently rotated about the rotation shaft 13, and can quickly respond to the tension fluctuation of the chain 20 to maintain the set tension of the chain 20. can.

As shown in FIG. 4, an idler 17 is provided on the lower front side of the left wall of the frame body 10, and an idler 18 and an idler 19 are provided on the lower rear side of the rotation axis 13 on the left wall of the frame body 10. Has been done.

A 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.

As a result, the fan 40 can be rotated by driving the chain 20 that transmits the output rotation of the engine to the scraping device 3A or the like, and it is not necessary to provide a motor for rotating the fan 40, which reduces the number of parts. be able to. Further, 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 also suppressed by the idlers 17-19.

On the left wall of the frame 10, an exterior cover 21 that covers the sprocket 14, the tension arm 15, the chain 20, and the like is detachably provided. This makes it possible to prevent the operator from coming into contact with the chain 20 or the like.

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

A rotation axis (“front rotation axis” according to claim) 25 extending in the left-right direction is erected on the front portion of the left and right walls of the frame body 10, and is located inside the frame body 10 on the rotation axis 25. , The rotating body 26 is supported, and the left sprocket 27A and the right sprocket 27B are juxtaposed on the outer peripheral portion of the rotating body 26 at predetermined intervals in the left-right direction.

The left sprocket chain 28A is wound around the left sprocket 23A and the left sprocket 27A, and the right sprocket chain 28B is wound around the right sprocket 23B and the right sprocket 27B. Further, on the left slat chain 28A and the right slat chain 28B, slats 29 formed in a substantially U shape are erected at predetermined intervals in the front-rear direction. As a result, the grain culms transported from the auger device 3C to the feeder house 3D can be efficiently transferred to the rear and transported to the threshing device. In the present specification, the left sprocket 27A and the right sprocket 27B are collectively referred to as a front sprocket 27, and the left sprocket chain 28A and the right sprocket chain 28B are collectively referred to as a slat chain 28.

As shown in FIG. 7, in the side view, the rotation shaft 13 is provided on the virtual line L connecting the center of the rotation shaft 11 and the center of the rotation shaft 25. As a result, it is possible to prevent the paddy from scattering from the frame body 10 to the outside, reduce the scattering loss of the paddy, and absorb a large amount of dust accumulated in the lower part of the frame body 10 to absorb the dust of the frame body 10. It can be efficiently discharged to the outside. In order to further reduce the scattering loss of paddy, the rotating shaft 13 is provided above the virtual line L, and a large amount of dust accumulated in the lower part of the frame body 10 is absorbed and efficiently discharged to the outside of the frame body 10. In this case, it is preferable to provide the rotating shaft 13 below the virtual line L.

In the side view, the rotary shaft 13 is provided so as to be offset to the rotary shaft 25 side from the center of the rotary shaft 11 and the rotary shaft 25 in the front-rear direction. As a result, it is possible to absorb a large amount of dust accumulated in the lower part of the front side of the frame body 10 and efficiently discharge it to the outside of the frame body 10. In order to evenly absorb the dust accumulated in the lower part of the frame body 10 and efficiently discharge it to the outside of the frame body 10, the rotating shaft 13 is provided at the center of the rotating shaft 11 and the rotating shaft 25 in the front-rear direction. When the dust floating on the control unit 5 is sucked and efficiently discharged to the outside of the frame body 10, the rotating shaft 13 shifts to the rotating shaft 11 side from the center of the rotating shaft 11 and the rotating shaft 25 in the front-rear direction. It is preferable to provide the above.

As shown in FIG. 8, in front view, the outer diameter of the fan (“dust suction fan” in the claim) 40 supported on the right side of the rotating shaft 13 is vertically spaced by the slat 29 moved by the chain 20. Is formed larger than. As a result, dust such as straw dust adhering to the slats 29 can be removed and efficiently discharged to the outside of the frame body 10. Further, as shown in FIG. 9, the outer diameter of the fan 40 can be formed to be smaller than the vertical distance between the chains 20 in the front view. As a result, it is possible to prevent the lubricating oil supplied to the chain 20 from scattering and prevent the durability of the chain 20 from deteriorating.

As shown in FIG. 8, the fan 40 is covered with a fan cover 41. The fan cover 41 is made of punching metal or the like. As a result, the fan 40 can be rotated to efficiently suck the air outside the fan cover 41.

A support shaft 45 extending in the left-right direction is provided on the right wall of the fan cover 41, and the rear portion of the windshield 46 covering the upper part of the fan 40 is swingably supported on the support shaft 45. Further, on the upper part of the windbreak plate 46, an operation lever 47 extending in the vertical direction for operating the swing of the windshield 46 is provided. Thereby, the air volume sucked by the fan 40 can be easily adjusted.

A dust outlet 50 for blowing air sucked by the fan 40 into the frame 10 is formed at a portion of the right wall of the frame 10 facing the fan 40. The diameter of the dust discharge port 50 is formed to be substantially the same as the diameter of the fan 40. As a result, the air sucked by the fan 40 can be efficiently blown into the frame body 10.

A dust outlet 52 for blowing air in the frame 10 into the exterior cover 21 is formed at a portion of the left wall of the frame 10 facing the dust outlet 50. The dust outlet 52 can be formed into various shapes. For example, as shown in FIG. 10, it can be formed by four fan-shaped dust outlets at predetermined intervals in the circumferential direction with the rotation shaft 13 as the center. Further, as shown in FIG. 12, it can be formed by two rectangular dust outlets with a predetermined interval in the front-rear direction about the rotation shaft 13 as a center. In these cases, as shown in FIG. 11, it is preferable to form the shatterproof portion 53 in which the outer peripheral portion of the dust discharge port is bent toward the inside of the frame body 10. As a result, it is possible to prevent the paddy from scattering to the outside from the dust discharge port 52 of the frame body 10 and reduce the scattering loss of the paddy. Further, on the upper wall of the frame body 10, two cleaning lids 56 that can be opened and closed are provided at predetermined intervals in the front-rear direction. Thereby, the grain culms entwined with the chains 28A and 28B in the frame body 10 can be easily removed.

As shown in FIG. 11, a dust exhaust port 55 for blowing air inside the exterior cover 21 to the outside is formed at a portion of the exterior cover 21 facing the dust exhaust port 52. The dust outlet 55 can be formed into various shapes like the dust outlet 52. Further, in front view, it is preferable that the left wall of the exterior cover 21 is formed so as to be inclined downward to the left, and a plurality of openings are formed in the lower wall of the exterior cover 21. As a result, it is possible to prevent the straw dust discharged from the frame body 10 into the exterior cover 21 from being rolled up, and to maintain a good working environment.

As shown in FIG. 16, in the left side view, when the pre-cutting processing device 3 is in the downward position moved to the lowermost position, the fan 40 is provided at a position facing the engine room 6, and the pre-cutting processing device 3 is provided. In the case of the ascending posture moved to the uppermost position, the fan 40 is provided at a position close to the lower side of the step plate on which the operator of the control unit 5 rests his / her legs. As a result, the air heated by the engine in the engine room 6 is sucked by the fan 40, passed through the feeder house 3D, and then discharged to the outside of the feeder house 3D, so that the temperature of the control unit 5 rises. It is possible to improve the working environment by suppressing the temperature rise of the control unit 5, and it is possible to remove the dampness of the grain moving in the feeder house 3D and improve the threshing efficiency in the threshing device 4. ..

Next, the feeder house 3D of the second embodiment will be described. The same members as those in the first embodiment and the feeder house 3D are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 15, a sprocket 61 is provided on the right side of the rotating shaft 11 extending to the right side of the right wall of the frame body 10, and the rotating shaft extending to the right side of the right wall of the frame body 10 is provided. A sprocket 62 is provided on a portion on the right side of the fan 40 on the right side of the 13th portion, and a chain 63 is wound around the sprocket 61 and the sprocket 62. The tension of the chain 63 is adjusted by a tension arm (not shown), and the posture of the tension arm, that is, the posture of the tension arm that tensions the tension of the chain 63 and the posture of the tension arm that relaxes the tension of the chain 63 , It is switched by a switch provided in the control unit 5. As a result, the rotation of the fan 40 can be freely operated by the switch regardless of the driving state of the feeder house 3D. A pulley 60 that transmits the output rotation of the engine to the rotating shaft 11 via the belt is supported on the right side of the rotating shaft 11.

Next, the feeder house 3D of the third embodiment will be described. The same members as those in the first embodiment and the feeder house 3D are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIGS. 17 and 18, a fan 70 is provided on the right side of the right wall of the frame body 10, and a motor 71 for rotating the fan 70 is attached to the right side of the base of the fan 70. The motor 71 is covered with a fan cover 72. Further, a fan 75 is provided on the left surface of the left wall of the frame body 10, a motor 76 for rotating the fan 75 is attached to the left side of the base of the fan 75, and the fan 75 and the motor 76 are the fan cover 77. It is covered with. As a result, the air sucked by the fan 70 and exhausted into the frame 10 can be efficiently exhausted to the outside of the frame 10 by the fan 75. The fan 70 and the fan 75 are provided on the rear side of the idler 19 when viewed from the left side of the machine body.

The fan cover 72 was swingably supported around a support shaft (not shown) extending in the vertical direction formed on the right wall of the frame body 10, and the fan cover 77 was formed on the left wall of the frame body 10. It can also be swingably supported around a support shaft (not shown) extending in the vertical direction. As a result, the ventilation directions of the fan 70 and the fan 75 can be adjusted to improve the working environment of the control unit 5. Further, the upper portion of the fan cover 72 may be provided above the upper wall of the frame body 10. As a result, the dust adhering to the upper wall of the frame body 10 can be efficiently removed.

As shown in FIGS. 19 and 20, the center of the base of the fan 75 can be provided above the center of the base of the fan 70. As a result, it is possible to prevent the paddy from scattering from the frame body 10 to the outside and further reduce the scattering loss of the paddy. Further, the center of the base of the fan 75 can be provided on the front side of the center of the base of the fan 70. Further, the rotation speeds of the fan 70 and the fan 75 can be set to the same speed, or the rotation speed of the fan 75 can be set to be higher than the rotation speed of the fan 70.

When the fans 40 and 70 are driven by a motor, or when the fans 40 and 70 can be driven independently of the feeder house 3D and the pre-cutting processing device 3, the fans 40 and 70 are driven and controlled as described below. It is preferable to do so.

That is, the fans 40 and 70 are operated either when the feeder house 3D is driven, when the threshing device 4 is driven, or when the water temperature of the engine is higher than a predetermined value.

Further, the fans 40 and 70 can be operated when a plurality of the above conditions are satisfied.

It is also desirable to continue the operation for a predetermined time after the above conditions are no longer satisfied.

3B cutting blade device 3D feeder house 4 threshing device 6 engine room 40 fan (dust removal fan)
70 fan (dust fan)

Claims (1)

The engine room (6) that houses the engine and
A cutting blade device (3B) that cuts the grain culm,
A threshing device (4) for threshing grain culms,
A feeder house (3D) that supplies the culm cut by the cutting blade device (3B) to the threshing device (4).
In the feeder house (3D), air sucked from the engine room (6) side is supplied into the feeder house (3D) to a portion near the engine when viewed from the side of the machine body, and the inside of the feeder house (3D). Equipped with a dust removal fan (40, 70) that discharges the dust
The dust exhaust fan (40, 70) operates when the feeder house (3D) is driven, and a predetermined time from the time when the drive of the feeder house (3D) or the threshing device (4) is stopped. A combine that continues to operate during the period .

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