JPH11168944A - Dust-proof structure of combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dust-proof structure of a combine harvester sufficiently preventing dust from sticking not only to the rear side but also to the front side of a fuel tank. SOLUTION: This dust-proof structure of a combine harvester has a fuel tank 10 at a part below a dust discharging port of the rear end part in a thresher 4 and covers the fuel tank 10 with a cover sheet C drooping from the rear end of an oscillating sorter 8 facing to the dust discharging port. The cover sheet C is constructed with the first cover sheet 13 covering the back side of a fuel supplying pipe 17 projected from the rear side of the fuel tank 10 to the outside and the rear side of the fuel tank 10 and the second cover sheet 14 covering a front side of the fuel tank 10, an the third cover sheet 19 closing a gap between the fuel supplying pipe 17 and the second cover sheet 14 is drooped from the rear end of the oscillating sorter 8 in a state provided between the fuel supplying pipe 17 and the second cover sheet 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threshing apparatus in which a fuel tank is disposed below a dust outlet at a rear end of the threshing apparatus, and a flexible tank hanging down from the rear end of a rocking sorting device facing the dust outlet. The present invention relates to a dustproof structure of a combine, wherein the fuel tank is covered with a cover sheet having a property.

[0002]

2. Description of the Related Art Conventionally, a dust outlet for discharging dust such as straw chips after threshing is provided at the rear end of a combine threshing apparatus, and a fuel tank is provided with the dust outlet. There is a known configuration in which a fuel supply pipe of a fuel tank is disposed below a mouth and provided so as to extend laterally outward. In addition, since this fuel tank is apt to be contaminated by the attachment of straw debris and floating dust falling from above to the surface, conventionally, a single cover sheet covering the rear side of the fuel tank is provided by a swing sorting device. It was made to hang down from the rear end.

[0003]

However, in the above-mentioned conventional structure, although the attachment of dust and the like to the rear side of the fuel tank can be suppressed, the fuel supply pipe extending laterally and outwardly can be prevented. Since a gap is formed between the fuel supply pipe and the edge of the cover that covers the rear portion on the side of the fuselage, dust entering the fuel tank through the gap may adhere to the front surface of the fuel tank. As a result, the adhesion of dust to the fuel tank surface has not been sufficiently suppressed.

The present invention has been made in view of the above circumstances, and has as its object to provide a dustproof structure of a combine which can sufficiently prevent dust from adhering not only to the rear side but also to the front side of the fuel tank.

[0005]

(Structure) A dustproof structure for a combine according to a first aspect of the present invention includes a fuel tank disposed below a dust outlet at a rear end of a threshing apparatus, and a dust collector. A dustproof structure of a combine that is configured to cover the fuel tank with a cover sheet hanging down from the rear end of the swinging sorting device facing the mouth, wherein the cover sheet includes:
The fuel tank comprises a first cover sheet covering a rear side of the fuel supply pipe projecting laterally outward from a rear side of the fuel tank and a rear surface side of the fuel tank, and a second cover sheet covering a front side of the fuel tank. And swinging the third cover sheet, which closes a gap between the fuel supply pipe and the second cover sheet, between the fuel supply pipe and the second cover sheet. It is characterized by being suspended from the rear end of the sorting device.

(Operation) According to the first aspect of the present invention, the rear surface of the fuel tank is covered with the first cover sheet, thereby preventing dust and the like from adhering to the rear surface of the fuel tank. The front side of the fuel tank is covered with a second cover sheet to prevent dust and the like from adhering to the front side of the fuel tank. The third cover sheet covers the gap so that the dust does not adhere to the surface of the fuel tank through the gap between the cover sheet and the dust and enters the fuel tank through the gap between the cover sheet and the fuel supply pipe. That is being suppressed.

(Effects) Therefore, according to the configuration of the first aspect of the present invention, it is possible to suppress the adhesion of dust to the front side of the fuel tank and to generate fuel due to the presence of the fuel supply pipe. By covering the gap between the supply pipe and the second cover sheet with the third cover sheet, it is possible to reliably prevent dust from adhering to the surface of the fuel tank through the gap.

(Structure) In a dustproof structure for a combine according to a second aspect of the present invention, in the first aspect, the third cover sheet is formed separately from the second cover sheet by slits extending vertically. This is a characteristic configuration.

(Operation) According to the structure of the second aspect of the present invention, the third cover sheet can be constituted by a common member instead of a separate member from the second cover sheet, so that the number of parts can be reduced. Can be done.

(Effects) Therefore, according to the structure of the second aspect of the present invention, the number of parts can be reduced, and the cost can be reduced.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a self-contained combine. This self-removable combine mounts a cutting pretreatment device 3 on a front end of a body frame 2 supported by a pair of left and right crawler traveling devices 1 and 1 so as to be able to swing up and down around a horizontal axis P. The frame 2 is equipped with a threshing device 4, a boarding operation unit 5, a driving unit, a Glen hopper 7, and the like.

As shown in FIGS. 2 to 5, a handling cylinder (not shown), an oscillating sorting device 8, and a collecting device for collecting or further returning the sorted products to the oscillating sorting device 8 (the whole thereof). (Not shown) in a threshing case 9 to constitute a threshing device 4. Then, the rear end of the threshing case 9 is drained from the rear end of the swinging sorting device 8 so that straw waste, dust, and the like remaining by the sorting process in the swinging sorting device 8 can be discharged to the outside of the machine body. The dust port H is formed as an opening. The fuel tank 10 is installed at a position below the rear end of the swinging sorting device 9 at the dust outlet H. That is, the fuel tank 1
Reference numeral 0 designates a plurality of brackets provided on the body frame 2 in a state where it is disposed in a space S provided behind the second object collection device 11 in the collection device and is placed on the body frame 2. It is fixed. That is, the flange 10a which forms a horizontal plane formed over the entire outer circumference of the fuel tank 10 is bolted to the bracket.

The swing sorting apparatus 8 is constructed such that Glen pans, chaff sheaves, Glen sheaves, straw racks and the like are provided in a frame 12 and the frame 12 is swingably driven by an eccentric drive mechanism. A cover sheet C that covers the fuel tank 10 is provided on the rear end surface 12a of the frame 12 in a hanging state. More specifically, the cover sheet C has a first cover sheet 13 that covers the rear side of the fuel tank 10 and a second cover sheet 14 that covers the front side of the fuel tank 10 in a state where two upper sheets are stacked. The frame body 12 is fastened and fixed to the rear end face portion 12a of the frame body 12 with a thumb screw 16 # while being pressed from behind by the mounting frame plate 15. The first cover sheet 13 is suspended from the rear end face portion 12 a of the frame body 12 to a position where the lower end edge also covers the rear side of the body frame 2. In addition, a fuel supply pipe 17 bent from the left upper portion of the rear upper portion of the fuel tank 10 is provided so as to extend to the left and right outside of the fuselage, and supplies the liquid fuel to the fuel tank 10. The first cover sheet 13 covers the rear side of the fuel supply pipe 17 forming a path up to a location near the left lateral side of the dust outlet H. Accordingly, the first cover sheet 13 is provided in the space S
Is configured to cover almost the entire surface in rear view. And
The second cover sheet 14 covers the inclined surface 10b forming the front surface of the fuel tank 10 so as to cover the front surface of the fuel tank 10 so that dust and the like do not adhere to the inclined surface 10b. Further, as shown in FIG. 2 to FIG.
A third cover sheet 19, which is formed separately from a portion covered on the front side of the fuel tank 10 by a slit 18 cut in the vertical direction, is hung on the left side of the fuel cell 10. The third cover sheet 19 is configured to close a gap formed between the fuel supply pipe 17 and the second cover sheet 14, and includes a fuel supply pipe 17 in a left edge portion of the first cover sheet 13. Dust that enters through a gap generated between a portion that is not in contact with the pipe 17 and the left side wall 9L of the threshing case 9 passes through the gap between the second cover sheet 14 and the fuel supply pipe 17 and the fuel tank 10
To prevent dust from entering and adhering to the front side. That is, the third cover sheet 19 divides the gap between the left side surface of the fuel tank 10 and the left side wall 9L back and forth by the hanging posture, and also forms the gap between the fuel supply pipe 17 and the second cover sheet 14. To block the gap.

Next, a description will be given of a structure for changing the position of the pre-cutting device 3 in the left-right direction. A frame 20, a pair of right and left raising devices 21 arranged in parallel, a clipper-type cutting device 22 for cutting the root of the raised grain culm, and a pair of right and left packers that rake the cut culm into the middle of the cutting width and join. 23, a pair of left and right auxiliary transporting devices 24 extending cantilevered obliquely forward from the top of each packer,
There is provided a vertical transport device 26 for transporting the harvested grain stalks rearward and upward to the feed chain 25 of the threshing device 4 in a sideways posture.

As shown in FIG. 6, the vertical transport device 26 comprises a stock-holding / transporting mechanism 26a acting on the grain culm stock side and a head locking transport mechanism 26b acting on the grain culm tip side. 26 is configured to be able to adjust the handling depth by swinging up and down around the horizontal axis fulcrum P.

As shown in FIG. 6 and FIG.
On a pair of right and left mowing part support stands 27 erected at the front of the mower, a driving shaft 28 is coaxially arranged with a horizontal axis P serving as a vertical swing fulcrum of the mowing pretreatment device 3 via support brackets 29A and 29B. Power is transmitted from the transmission case to the driving shaft 28. More specifically, a pair of left and right support brackets 29A and 29B rotatably fitted to the driving shaft 28.
Is connected to the reaping portion support base 27 by bolts,
Is connected to a driving unit via an input pulley 30 provided at one end thereof, and supplies power to a vertical transport device 26, a raising device 21, a clipper-type cutting device 22 and the like as movable portions of the cutting pre-processing device 3. It is configured to be able to transmit.

As shown in FIGS. 7 and 8, a swing frame 31 pivotally supported by a pair of left and right mowing portion supports 27 so as to be able to swing up and down around an axis Q in the left-right direction.
And a hydraulic cylinder 32 that drives and oscillates a lifting mechanism A that drives and lowers the pre-cutting device 3. The oscillating frame 31 includes a left and right pressing action portion 31a which contacts the main frame 20 from below and left and right arm portions 31b, 3
1b and a fulcrum pipe 31d integrally formed with the fulcrum pipe 31d.
c is attached to the fulcrum pipe 31d so as to be offset to the left side, and the main frame 20 of the pre-cutting device 3 is configured to be able to move laterally within the left and right ranges of the portal pipe 31c. Further, a sliding contact reinforcing member 33 made of resin is attached to the lower surface of the main frame 20, and a stainless plate is formed on the pressing action portion 31a supporting the main frame 20 via the sliding contact reinforcing member 33. The fixed contact K is fixedly installed in an externally fitted state. The abutment K prevents wear of the pressing action portion 31a and the like, and also makes the abutment K itself less likely to rust and has high durability.

The piston rod 3 of the hydraulic cylinder 32
The distal end portion 2a is pivotally supported by a U-shaped mounting bracket 34 fixed to the pressing portion 31a. A lateral feed member 35 which is engaged with the main frame 20 and moves left and right integrally therewith, and the left and right arm portions 3 which are screwed thereto.
1b, and a geared motor 37 for driving and rotating the screw shaft 36,
The main frame 20, that is, a transverse feed mechanism E for forcibly sliding the pre-cutting device 3 is constituted. Screw shaft 36
31e of the arm part 31b that supports the left side of the robot
In addition, a geared motor 37 is mounted, and a bar member 38 for preventing rotation of the lateral feed member 35 is fixed to the left and right arm portions 31b, and the bar member 38 improves the strength and rigidity of the swing frame 31. It is also a reinforcing member that contributes to

The load of the main frame 9 is always applied to the pressing portion 31a, and the load is not applied to the screw shaft 36.
5 and the lower surface of the main frame 20 are set such that a gap is formed up and down even when both of them are closest to each other. Since the traverse member 35 is prevented from rotating by the bar member 38, the bottom end 35f of the front and rear of the traverse member 35 and the lower surface of the main frame 20 abut when the screw shaft 36 is driven in reverse rotation of normal rotation and reverse rotation. Without
Therefore, the collision sound is not generated. Then, a horizontal bar-shaped main frame regulating member 39 is laid across the left and right arm portions 31b via a pair of left and right support brackets 40 so as to leave a gap between the main frame 20 and the upper surface of the main frame 20. The main frame 20 is configured so as to prevent the main frame 20 from largely floating from the pressing action portion 31a when the loaded truck bounces during traveling or the like.

[Brief description of the drawings]

FIG. 1 is an overall side view showing a combine.

FIG. 2 is a rear view showing a main part.

FIG. 3 is a longitudinal sectional side view showing a main part.

FIG. 4 is a perspective view showing a main part.

FIG. 5 is an exploded perspective view showing a cover sheet.

FIG. 6 is a vertical sectional side view showing a base of the pre-cutting device.

FIG. 7 is a longitudinal sectional side view showing a horizontal sliding portion structure of the pre-cutting device.

FIG. 8 is a front view showing the structure of a horizontal slide portion of the pre-cutting device.

[Explanation of symbols]

 Reference Signs List 4 threshing device 8 swing sorting device 10 fuel tank 13 first cover sheet 14 second cover sheet 17 fuel supply pipe 18 slit 19 third cover sheet C cover sheet H exhaust port

Claims (2)

[Claims] 1. A fuel tank is disposed below a dust outlet at a rear end of a threshing device, and the fuel tank is covered with a cover sheet hanging down from a rear end of a swinging sorting device facing the dust outlet. The dust cover structure of the combine, wherein the cover sheet covers a rear side of a fuel supply pipe protruding laterally outward from a rear side of the fuel tank and a rear side of the fuel tank. And a second cover sheet that covers a front side of the fuel tank, and the fuel supply pipe, a third cover sheet that closes a gap between the second cover sheet, the fuel supply pipe, A dustproof structure for a combine that is disposed between a second cover sheet and a rear end of the swinging sorting device, the dustproof structure being disposed between the swinging sorting device and the second cover sheet. 2. The combine dustproof structure according to claim 1, wherein said third cover sheet is formed separately from said second cover sheet by slits extending vertically.