JP2009039024A - Dust exhausting apparatus of combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dust exhausting apparatus of a combine harvester readily avoiding entwining of dust. <P>SOLUTION: The dust exhausting apparatus is equipped with a hood 31 forming a dust exhausting route 35, an electric axial flow fan 40 installed in the hood 31 so as to make the dust flow along the dust exhausting route 35, and a cylindrical motor stator 60 protruding from a wall part 31b of the hood 31 into the dust exhausting route 35. An electric motor 41 of the electric axial flow fan 40 is fit in the protruding end of the motor stator 60, and a motor connecting part 62 is arranged at the protruding end of the motor stator 60. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a combine dust remover including a hood that forms a dust removal path and an electric axial fan provided inside the hood so that the dust flows along the dust removal path.

Conventionally, for example, Patent Document 1 discloses a dust removing device described above.
The dust exhaust device described in Patent Document 1 includes a dust-proof hood formed by an upper surface hood and a side hood provided on the upper surface and side surface of the feeder house, and a suction / exhaust dust fan and an electric motor provided inside the upper surface hood. The dust generated in the grain header is sucked and discharged by a fan.

  In this type of dust removing device, conventionally, a motor support extending from the air guide toward the fan rotation axis is provided on a wind tunnel-type air guide located around the rotary fan of the electric axial flow fan. The electric axial fan is attached to the inside of the hood by fixing the electric motor of the electric axial fan to the extending end of the motor support.

JP 2002-345320 A (paragraphs [0007], [0008], FIG. 1-5)

When the electric axial flow fan is attached by adopting the above-described conventional technology, the entanglement of the dust flowing on the motor support by the suction and discharge action of the rotary fan is likely to occur.
That is, when the conventional technique is adopted, the motor support is positioned in the dust discharge path along with the rotating fan and the dust flow direction. For this reason, the motor support is constructed in the form of an arm that is located in the rotation direction of the rotary fan with an appropriate interval, and the distance between the motor supports becomes a dust passage so that the motor support becomes an obstacle for dust flow. It was necessary not to become. As a result, the motor support became a thin rod-like body, and sawdust and cut straws were easily entangled with the motor support.

  An object of the present invention is to provide a combine dust removal device that can easily avoid the entanglement of dust.

The first aspect of the present invention is a combined dust discharger comprising a hood that forms a dust discharge path, and an electric axial fan provided inside the hood so that the dust flows along the dust discharge path.
A cylindrical motor stay that protrudes from the wall portion of the hood to the dust passage,
A motor connecting portion for fitting and fixing the electric motor of the electric axial flow fan is provided at the protruding end portion of the motor stay.

  According to the configuration of the first aspect of the invention, the motor stay is positioned in the dust passage to support the electric axial fan, but the motor stay is placed in the dust passage in a state where the dust easily flows around the motor stay. To position. Further, since the motor stay is cylindrical, dust hardly slides around the motor stay and adheres to the motor stay.

  Therefore, it is possible to obtain a dust removal device that is less likely to be clogged or defective due to dust adhering to the motor stay and in which the dust removal process is performed smoothly.

  In the second invention, the motor stay has a cylindrical shape.

  According to the configuration of the second aspect of the invention, even if the outer diameter of the motor stay is made as small as possible so that the motor stay is not obstructed by dust flow, the dust stays on the peripheral surface of the motor stay and the dust stays on the motor stay. Is unlikely to occur.

  Accordingly, dust can smoothly flow from both sides of the motor stay with a small diameter and avoiding dust adhesion, and dust can be discharged more efficiently.

  In the third aspect of the invention, the rotating fan of the electric axial flow fan is disposed in the dust suction port of the hood, the hood is in an open state in which the dust suction port is separated from the communication target member, and the dust suction port is the communication target. It is pivotally supported so as to be swingable and openable in a closed state facing the member.

  According to the configuration of the third aspect of the invention, when the hood is swung open and the dust suction port is opened, the electric axial fan is attached to the hood and separated from the communication target member, and the rotating fan is inspected and cleaned from the dust suction port of the hood. Open as much as you can.

  Therefore, it is possible to easily check and clean the rotating fan by simply swinging and opening the hood.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a left side view of an entire combine according to an embodiment of the present invention. FIG. 2 is a right side view of the entire combine according to the embodiment of the present invention. FIG. 3 is a plan view of the entire combine according to the embodiment of the present invention. As shown in these drawings, a combine according to an embodiment of the present invention is a traveling machine body that has a driving unit 2 that is self-propelled by a pair of left and right crawler type traveling devices 1 and 1 and that is equipped with a driving seat 2a. The threshing machine 4 provided on the rear side of the machine body frame 3 of the traveling machine body, the grain bagging unit 10 equipped with the bagging tank 11 provided on the side of the threshing machine 4, and the threshing machine 4 A cutting portion 20 having a feeder 21 connected to the front portion is provided.

This combine harvests rice and wheat.
That is, the cutting unit 20 includes the feeder 21, a cutting frame 22 connected to the front end of the feeder 21, a divider 23 provided on both sides of the front end of the cutting frame 22, and the cutting frame. 22 is a clipper-shaped cutting device 24 disposed at the front end of the platform portion 22a so as to be driven, and the cutting frame 22 near the rear of the cutting device 24 and on the upper surface side of the platform portion 22a. An auger 25 that is disposed and rotatably driven, and a rotary reel 27 that is rotatably supported by a pair of left and right support arms 26 and 26 that extend forward from the upper part of the base end side of the cutting frame 22. And is configured.

  The reaping unit 20 is configured such that the platform portion 22a of the reaping frame 22 is close to the ground when the feeder 21 is swung up and down with respect to the threshing machine 4 around a lifting shaft core P facing the body by a hydraulic cylinder 28. Are moved up and down to a lowered working state and the raised non-working state in which the cutting frame 22 is raised from the ground. When the cutting unit 20 is in the descending work state and the traveling machine body is driven, the cutting unit 20 performs the cutting process of the planted cereal cocoon and the supply of the chopped cereal meal to the threshing machine 4.

  That is, the cutting device is divided into a cutting target and a non-cutting target by the pair of left and right dividers 23, 23, and this cutting device is raked into the cutting device 24 by the rotary reel 27. Reap by 24. The harvested cereals are laterally fed forward of the feeder 21 along the platform portion 22a by the spiral plates 25a positioned at both ends of the auger 25. The harvested cereal that reaches the front of the feeder 21 is fed to the entrance 21a (see FIG. 4) of the feeder 21 located on the rear side of the auger 25 by scraping the transfer arm 25b provided in the middle of the auger 25 so as to be rotatable together. Send it in. The harvested cereals that have entered the feeder 21 are conveyed backward in the feeder 21 by the conveyor 29 located in the feeder 21. The whole of the harvested cereal culm that reaches the rear end of the feeder 21 from the stock to the tip is put into the handling room (not shown) of the threshing machine 4 by the scraping action of the conveyor 29.

  The threshing machine 4 performs the threshing process by the handling cylinder 4a that rotates the harvested cereal straw that has been put into the handling room.

  As shown in FIG. 2, the grain bagging unit 10 includes the bagging tank 11, and bags the upper end side of the grain bag mounted on the discharge cylinder 12 positioned at the lower part of the bagging tank 11. A bag support portion is provided which is supported by a support basket 13 and supports the lower end side of the grain bag by a bag receiving deck 14.

  The bag filling tank 11 is supplied with and stores the threshing grains from the sorting unit (not shown) of the threshing machine 4 by the cerealing device 15 (see FIG. 2). Drain into the bag.

  As shown in FIGS. 2 and 3, the grain bag filling unit 10 includes a pair of front and rear work auxiliary tools 16 and 16. Each work auxiliary tool 16 is positioned in a downward use posture protruding from the bag support portion laterally outward as shown by a solid line in FIGS. 2 and 3 and above the bagging tank 11 as shown by a two-dot chain line in FIG. It is supported so as to be able to swing and switch to the raised storage posture. Each work auxiliary tool 16 is positioned at a height at which the height H from the upper surface of the bag receiving deck 14 is 1.0 to 1.1 m by switching to the lowered use posture. An operator who has boarded for bagging work can be used as a waist rest member.

  As shown in FIGS. 1 and 3, the mowing unit 20 includes a dust removing device 30 equipped with a hood 31 provided in the feeder 21.

  FIG. 4 is a longitudinal side view of the dust removing device 30. FIG. 5 is a front view of the dust exhaust device 30. FIG. 7 is a longitudinal front view of the dust removing device 30. FIG. 8 is a perspective view of the dust exhaust device 30. As shown in these drawings, the dust removing device 30 includes the hood 31 and an electric axial flow fan 40 provided inside one end of the hood 31 in the lateral direction of the traveling machine body. is there.

  The hood 31 includes a lower wall portion 31a, an upper wall portion 31b, and a side wall portion 31c that extends around the entire circumference of the lower wall portion 31a and the upper wall portion 31b. The hood 31 includes a blowing guide 32 connected over one end side of the lower wall portion 31a and the side wall portion 31c. The hood 31 forms a dust suction port 33 toward the top plate portion 21b of the feeder 21 by the air blowing guide 32, and a dust discharge port 34 toward the ground by a cylindrical body connected to the other end side of the lower wall portion 31a. And a dust exhaust passage 35 communicating with the dust suction port 33 and the dust discharge port 34 is formed inside.

  The electric axial fan 40 includes an electric motor 41 and a rotating fan 42 that is attached to an output shaft 41a of the electric motor 41 so as to be integrally rotatable. In other words, the electric axial fan 40 operates such that the rotating fan 42 is driven by the electric motor 41 to generate wind, and the generated wind passes through the row of the rotating fan 42. The electric axial flow fan 40 is arranged such that the rotary fan 42 is located in the dust suction port 33.

That is, the dust removal device 30 rotates the rotary fan 42 by the electric motor 41 and discharges dust such as dust and sawdust generated in the cutting frame 22 so as not to diffuse upward in the machine body.
That is, the suction force of the rotary fan 42 is applied to the inside of the feeder 21 through the circular opening 50 provided in the top plate portion 21b of the feeder 21, and dust generated in the cutting frame 22 is fed to the feeder 21 from the entrance 21a. The dust sucked into the feeder 21 is sucked into the hood 31 through the opening 50. The dust flowing into the hood 31 is caused to flow along the dust discharge path 35 to the dust discharge port 34 by air blown by the rotary fan 42, and is discharged downward from the dust discharge port 34. At this time, dust is prevented from scattering by the rubber plate vibration-proof cover 36 suspended from the dust outlet 34.

  The electric axial flow fan 40 is attached to a motor stay 60 provided on the hood 31 so as to protrude from the upper wall portion 31b of the hood 31 to the dust passage 35.

  That is, the motor stay 60 is formed in a cylindrical shape so that the outer peripheral surface 61 becomes a cylindrical peripheral surface, dust easily flows around the motor stay 60 and slides on the outer peripheral surface 61 of the motor stay 60. A cylindrical motor connecting portion 62 is provided at the protruding end portion of 60.

  As shown in FIGS. 7 and 9, the motor connecting portion 62 includes a motor connecting plate 64 having a motor hole 63, which is the opposite side of the electric motor 41 to which the rotating fan 42 is connected. The end portion 41b is fitted in the motor connecting portion 62 from the motor hole 63, and the electric motor 41 is provided by a plurality of connecting bolts 65 attached to the mounting flange 43 provided in the electric motor 41 and the motor connecting plate 64. Is fixed to the motor connecting plate 64 in a detachable manner.

  As shown in FIG. 7, the hood 31 is supported on the top plate portion 21 b of the feeder 21 through a pivoting means 51 provided at a lateral end portion on the side opposite to the side where the dust outlet 34 is located. The pivoting means 51 swings up and down with respect to the feeder 21 around the hood opening / closing axis X in the front-rear direction of the traveling machine body.

  5 and 7 show the lowered closed state of the hood 31. FIG. As shown in these drawings, when the hood 31 is lowered around the hood opening / closing axis X, the top plate portion 21b of the feeder 21 is sealed by the sealing material 37 attached to the lower end portion of the air blowing guide plate 32. It will be in the closed state contact | abutted to the site | part provided with the sheet metal member 52 which forms the said opening 50 and the said pivot attachment means 51 of them. Then, the dust suction port 33 of the hood 31 faces the opening 50 of the feeder 21, and the hood 31 communicates with the feeder 21. At this time, the gap between the feeder 21 and the hood 31 is sealed by the sealing material 37 around the dust suction port 33. Further, the hood 31 can be fixed in the descending closed state by operating the lock means 70 provided across the dust outlet 34 of the hood 31 and the horizontal plate portion 21c of the feeder 21.

  FIG. 6 is a front view of the hood 31 when the hood 31 is in the ascending open state. As shown in this figure, when the hood 31 is lifted around the hood opening / closing axis X, the air blowing guide 32 rises from the top plate portion 21b of the feeder 21 and the dust suction port 33 is separated from the feeder 21. Opened. Then, the electric axial fan 40 is attached to the hood 31 and rises, and the rotary fan 42 is opened at the dust suction port 33 so that it can be easily inspected and cleaned. At this time, the sheet metal member 52 is operated to lift and swing the support rod 57 supported by the support bracket 56 formed on the upper surface side of the feeder 21, and the hood 31 includes the free end portion of the support rod 57. Attached to the stop hole 58. Then, the support rod 57 supports the hood 31 in a stretched manner and maintains the lifted open state.

  FIG. 10 is a plan view of the pivot means 51. As shown in FIG. 7, FIG. 7 and FIG. 8, the pivot means 51 includes a pivot bracket 53 formed by a part of the sheet metal member 52, and a pair of front and rear pin holders 54 provided in the pivot bracket 53. , 54, and a pair of front and rear connecting pins 55, 55 provided on the hood 31 so as to be rotatably fitted to each other.

  FIG. 9 is a side view of the locking means 70. As shown in FIG. 7 and FIG. 7, the lock means 70 includes an operation tool 72 supported by a bracket 71 provided on the horizontal plate portion 21c, a lock ring 73 supported by the operation tool 72, A hook 74 provided in the dust outlet 34 is provided. The lock means 70 is brought into a locked state by pulling and fixing the lock ring 73 engaged with the hook 74 to the bracket 71 by the swinging operation of the operation tool 72.

FIG. 11 is a longitudinal front view of the dust removing device 30 including the lock means 70 of the second embodiment structure. FIG. 12 is a longitudinal side view of the lock means 70 having the second embodiment structure. As shown in these drawings, the locking means 70 of the second embodiment structure is provided on the front and rear sides of the hood 31. Each lock means 70 fixes the hood 31 in the descending closed state by mounting a lock bolt 76 across the hood 31 and a fixing piece 75 provided on the top plate portion 21 b of the feeder 21. The lock means 70 releases the closed fixing of the hood 31 when the lock bolt 76 is removed from the fixing piece 75.
The feeder 21 shown in FIG. 11 includes a dust removal net 77 provided in the opening 50.

[Another Example]
Instead of the motor stay 60 described above, a configuration in which the outer peripheral surface is a hexagonal cylinder or a quadrangular cylinder may be adopted and implemented. Also in this case, the object of the present invention can be achieved.

  In the case of the dust removing device provided with an arrangement in which the cutting frame 22 is provided with an opening and the dust suction port 33 of the hood 31 communicates with the inside of the cutting frame 22 through the opening instead of the dust discharging device 30 of the above-described embodiment. Also, the present invention can be applied. Therefore, the feeder 21, the cutting frame, and the like are collectively referred to as a communication target member 21.

Combine left side view Right side view of the entire combine Overall plan view of combine Vertical side view of dust collector Front view of dust collector Front view with the hood raised Longitudinal front view of dust collector Perspective view of dust collector Side view of locking means Top view of pivoting means Longitudinal front view of a dust removal device provided with locking means of the second embodiment structure Longitudinal side view of a dust removal device provided with locking means of the second embodiment structure

Explanation of symbols

31 Hood 31 b Hood wall 33 Dust inlet 35 Dust exhaust path 40 Electric axial fan 41 Electric motor 42 Rotating fan 60 Motor stay 62 Motor connecting part

Claims (3)

A dust collector for a combine, comprising: a hood that forms a dust path; and an electric axial fan provided inside the hood to flow the dust along the dust path,
A cylindrical motor stay that protrudes from the wall portion of the hood to the dust passage,
A combine dust removing device, wherein a motor connecting portion for fitting and fixing an electric motor of the electric axial flow fan is provided at a protruding end portion of the motor stay.   The combine dust-removing device according to claim 1, wherein the motor stay has a cylindrical shape. The rotating fan of the electric axial flow fan is disposed in the dust suction port of the hood,
3. The hood is pivotally supported so as to be swingable openable and closable between an open state in which the dust suction port is separated from the communication target member and a closed state in which the dust suction port faces the communication target member. Combine dust remover.

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