JP2009033978A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine harvester so designed that the fuel feed pipe of a fuel tank set up beneath the rear end of a threshing section is ensured not to hinder dust exhaust action via an exhaust dust fan to enable smooth dust exhaustion. <P>SOLUTION: The combine harvester has the following construction: One side of a dust exhaust separatory chamber (19) formed behind the threshing chamber (8) of the threshing section (3) is furnished with the one-side suction-type dust exhaust fan (22), the fuel tank (24) is set up beneath the rear end of the threshing section (3), and the fuel feed pipe (25) of the fuel tank (24) is by-passed outside of a dust exhaust guide plate (23) guiding exhausted dust from the fan (22) toward the central side behind the machine body and bent at a midway point so as to effect a raised posture. In the proximity of the fuel ejection port (26) of the fuel tank (24), a cover (28) is provided so as to cover the top surface of the rear of the fuel tank (24) from a site on the rear end of the threshing section (3). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a combine that performs a threshing process while cutting napped grains in a field.

Conventionally, for example, in Patent Document 1, a fuel tank is disposed at a proper position below a dust outlet at a rear end portion in a threshing portion, and a fuel tank is covered with a cover sheet that hangs from the rear end of a swing sorting device facing the dust outlet. There is disclosed a combine that covers.
Japanese Patent Laid-Open No. 11-168944

  Conventionally, in the threshing part configuration having a one-side suction type dust exhaust fan on one side of the dust sorting chamber, the fuel supply pipe of the fuel tank arranged at the appropriate position below the rear end of the threshing part is separated from the dust exhaust fan. There is a problem that the dust exhausting action is hindered and a smooth dust exhausting action cannot be expected.

In order to solve the above problems, the present invention has taken the following technical means.
That is, the invention according to claim 1 is provided with a threshing portion (3) in the rear portion of the traveling vehicle body (1) provided with the crawlers (2, 2), and the cutting portion (4) is provided in front of the threshing portion (3). Provided, a driving operation part is provided on the side of the cutting part (4), a Glen tank (G) is provided behind the driving operation part, and formed behind the handling chamber (8) of the threshing part (3). A suction dust exhaust fan (22) of a one-side suction system is provided on one side of the dust sorting chamber (19), a fuel tank (24) is disposed at the lower rear end of the threshing portion (3), and the fuel tank (24) The fuel supply pipe (25) is bent from the middle by bypassing the outside of the dust discharge guide plate (23) for guiding the dust discharged from the suction dust discharge fan (22) toward the rear center side of the machine body. The combine is characterized by being provided in a standing posture.

  The fuel supply pipe 25 is unlikely to hinder the discharge of dust from the dust fan 22. Dust is not entangled with the fuel supply pipe 25 or the flow on the dust guide plate 23 is stagnated and clogged, and the dust can be discharged smoothly. In addition, since the fuel supply angle can be increased, the fuel supply operation from the fuel supply port can be performed satisfactorily.

  According to a second aspect of the present invention, there is provided a cover body that covers a rear upper surface of the fuel tank (24) from a rear end portion of the threshing portion (3) in the vicinity of the fuel outlet (26) of the fuel tank (24). The combine according to claim 1, wherein (28) is provided.

  By providing a cover body 28 in the vicinity of the fuel outlet portion 26 of the fuel tank 24 and making the cover body 28 detachable, maintenance of the piping portion of the fuel outlet portion 26 does not move the glen tank G. It is easy to perform, and maintenance can be easily performed from the rear even in the case of a trouble in the state in which the glaze is in the Glen tank G.

  According to the first aspect of the present invention, the fuel supply pipe 25 bypasses the outside of the dust discharge guide plate 23 and bends from the middle portion and is provided in a standing posture. It is hard to prevent discharge. The dust is less likely to get entangled with the fuel supply pipe 25 or clogged because the flow on the dust guide plate 23 is stagnated, and the dust treatment can be performed smoothly. In addition, since the fuel supply angle can be increased, the fuel supply operation from the fuel supply port of the fuel supply pipe 25 can be performed satisfactorily.

  According to the second aspect of the present invention, in addition to the effect of the first aspect of the invention, the cover body 28 is provided from the rear end portion of the threshing portion 3 in the vicinity of the fuel outlet portion 26 of the fuel tank 24. Therefore, the maintenance of the piping part in the fuel outlet part 26 can be easily performed without moving the Glen tank G by attaching and detaching the cover body 28, and maintenance is performed from the rear even in the case of a trouble in the state where the Glen tank G is flawed. Can be done easily.

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a side view of a combine. This traveling vehicle body 1 includes a pair of left and right traveling crawlers 2 and 2, and a reaping portion 4 at the front of a threshing portion (threshing device) 3 mounted on the rear portion. A grain tank G for temporarily storing threshing grains behind the driving operation unit is provided on the lateral side of the cutting unit 4 with a driving operation unit 5 including an operator seat 5 and an operation box 6. Equipped with. Further, the rear part of the threshing unit 3 is equipped with a waste straw cutter C for cutting the waste straw after the threshing.

  The threshing unit 3 is configured to perform threshing processing by a handling cylinder 9 that is driven and rotated in a handling chamber 8 at the tip part of the cereal bowl that is conveyed while holding the stock by a threshing feed chain 7. The handling cylinder cover 10 covering the upper part of the handling cylinder 9 is configured to swing and open with one side of the handling chamber as a fulcrum.

A dust exhaust port 11 is provided on the terminal side of the handling chamber 8 for dropping a dust-treated product including a large amount of straw waste and untreated material downward.
A second processing chamber 14 in which a second processing cylinder 13 is pivoted is provided in parallel on one side of the handling chamber 8 opposite to the fid chain 7 side. Further, a dust removal treatment chamber 16 in which a dust removal treatment cylinder 15 is pivotally mounted on the same axis is provided behind the second treatment cylinder. Spiral-shaped intake vanes 17 fixed to the start end of the dust removal cylinder are interposed in the dust feed passage 12 from the portion corresponding to the dust discharge port 11 at the end of the handling chamber to the start end of the dust removal treatment chamber 16. So that the dust can be easily taken into the dust processing chamber 16. A discharge vane 18 is provided at the end of the dust removal processing cylinder 15, and the waste sorting material sent to the end of the processing chamber is sorted by the swing sorting device 20 from the waste waste outlet at the end of the processing chamber by the discharge vane 18. It is configured to discharge to the outside of the machine at the end of the shelf and behind the processing chamber.

  The dust sorting chamber 19 at the rear of the handling chamber 8 has a one-side suction type dust suction port 21 located on the opposite side of the dust handling chamber 16 on the one side opposite to the dust handling cylinder 15 side. A suction dust exhaust fan 22 is installed.

A dust discharge guide plate 23 is provided below the dust discharge fan 22 to guide dust discharge from the dust discharge fan from one side of the fuselage toward the center of the feed chain 7 side.
The fuel tank 24 is installed at a rear end portion of the threshing portion and positioned below the end portion of the swing sorting device 20. A fuel supply pipe 25 is connected to the left side of the fuel tank 24, and a fuel outlet 26 is provided on the right side. The fuel supply pipe 25 in which the fuel filler opening 25a is closed by the cap 25b is configured to bypass the outside of the dust discharge guide plate 23 and bend from an intermediate portion to be in an upward standing state.

  The left side wall of the fuel tank 24 does not protrude outwardly from the left guide plate 33L of the cutting wall skirt guide portion 33 of the discharge wall cutter C in the rear view, and the right end portion of the fuel tank is the right outer side of the sorting chamber right side plate 32. The structure is made to protrude in the direction. The fuel outlet 26 of the fuel tank is disposed outside the sorting chamber width so as to be located on the right outer side with respect to the sorting chamber right side plate 32. According to this, when pulling out the swing shelf rearward, it does not hinder the damage or workability by being caught on the pipe or the outlet. The fuel outlet 26 includes a fuel hose 26a having one end inserted into the fuel tank and the other end communicating with the engine, a fuel filter 26b provided in the middle, and the like.

  In the vicinity of the fuel outlet portion 26 of the fuel tank 24, a cover body 28 that is inclined rearward and downward so as to cover the rear upper surface of the fuel tank from the rear plate 27 of the threshing portion is provided. The cover body 28 is provided at a rear corresponding portion of the dust disposal chamber 16 and receives the dust disposal product discharged from the end of the dust disposal chamber 16 and guides it to the rear of the fuel tank 24 while guiding it down and sucks it. The exhaust air from the dust exhaust fan 22 is merged. Further, the cover body 28 is configured so as to enter the sorting chamber width by an L interval in the rear view. Accordingly, the cover seal 30 can be floated upward from the fuel tank by overlapping the cover seal 30 provided so as to hang from the rear end surface of the frame 29 of the swing sorting device 20 and cover the fuel tank 24 from above. The overlap margin between the cover seal and the cover body is also increased, and the dust resistance of the fuel tank is increased.

  The left end portion of the fuel tank 24 is configured as a V-shape 24v that is laterally viewed from the rear so as to prevent accumulation of dust. The ground height between the bottom surface of the fuel tank and the lower end of the cutting straw skirt guide 33 is substantially the same. The fuel supply port 25a of the fuel supply pipe 25 is located in the vicinity of the connection portion between the feed chain cover 34 and the belt cover 35 in the vertical direction when viewed from the rear, and in the middle portion between the chain cover and the belt cover in the horizontal direction. By being positioned, the fuel can be easily supplied.

  In addition, by preventing the bottom surface of the fuel tank from protruding outward (uncut ground side) from the left frame member 36 of the traveling frame, it is possible to prevent damage to the fuel tank even if it crashes into the shore. I have to.

  Next, the operation structure of the power steering lever (power steering lever) provided on the operation box of the combine will be described. As shown in FIGS. 9 and 10, the power steering lever 40 provided on the operation box 6 swings and displaces around the left and right horizontal axis X when operated in the front and rear direction, and rotates around the front and rear axis Y when operated in the left and right direction. Oscillating displacement.

  The mowing part is controlled to move up and down by operating the power steering lever 40 in the front-rear direction, and the advancing direction of the machine body is controlled from left to right by operating the left-right direction. A relief valve 41 for increasing the braking force is disposed below the power steering lever 40. When the power steering lever is operated to the left and right, the spool shaft 41a of the relief valve 41 is operated via the operation arm 42 and the operation rod 43. It is like that.

  Since the relief valve has an operation structure through an operation arm and an operation rod, it is easy to place the relief valve at a position away from the front, rear, left and right pivots, thereby ensuring the operation. Further, the left and right operation rods 43, 43 are arranged in an inclined shape (V-shaped in front view) toward the center of the relief valve 41, and are configured to press the vicinity of the spool shaft of the relief valve. Since the force is applied in a direction close to the operation direction of the spool shaft, the spool shaft moves smoothly, and the operation feeling can be improved. Further, the operation rod is pushed by the head 44a of the left and right bolts 44, and the clearance between the left and right operation rods 43, 43 and the head 44a of the bolt 44 can be adjusted independently. Yes. Since the pressing amount of the relief valve can be adjusted independently on the left and right sides, it becomes easy to adjust with good balance when the left and right steering displacement amounts are different.

  The power steering lever 40 includes a grip portion 40a and a lever rod 40b. A middle portion of the lever rod 40b is bent in a crank shape from the upper side to the rear side of the operation box 6 in a side view, and the bent portion of the lever rod 40 is formed. Even if 40c pulls this to the near side (rear), it does not protrude rearward from the rear surface of the operation box 6 to prevent contact with the operator.

  The horizontal axis X, which is a pivot point in the front-rear direction of the power steering lever 40, is positioned above the front axis Y, which is a pivot point in the left-right direction, and is disposed near the upper surface of the operation box 6. By forming the plate 46 that connects the lever rod 40b of the power steering lever 40 and the boss portion 45 of the horizontal axis X (see FIG. 11 in particular), it is possible to reduce the size while maintaining the strength of the lever. It is easy to ensure a predetermined clearance at the end of the lever rod, and an electric wire or the like attached to the grip portion can be easily passed.

  Further, the lever front / rear axis Y, the guide plate 47 of the operating rod 43, and the stay 48 of the relief valve 41 are combined in a single bracket 49, thereby reducing the number of parts, downsizing and assembling the configuration. To make it easier. The neutral return spring 50 in the left-right direction is disposed on the opposite side of the relief valve 41 across the plate, thereby reducing the size of the power steering lever.

Combine side view Combine rear view Top view of the main part of the threshing part Top view of the main part Rear view of the main part of the combine Rear view of the main part Side sectional view of the main part of the combine Expanded side view of the main part Front view showing the power steering lever operation structure Side view of the main part Partial perspective view of the same as above

Explanation of symbols

1 traveling vehicle body 2 traveling crawler (crawler)
3 Threshing section 4 Mowing section 8 Handling room 19 Dust sorting room
22 Suction dust exhaust fan 23 Dust exhaust guide plate 24 Fuel tank 25 Fuel supply pipe 26 Fuel outlet
28 Cover body G Glen tank

Claims (2)

  A threshing part (3) is provided at the rear part of the traveling vehicle body (1) provided with the crawlers (2, 2), a cutting part (4) is provided in front of the threshing part (3), and the side of the cutting part (4) is provided. One side of the dust sorting chamber (19) formed in the rear of the handling chamber (8) of the threshing portion (3), provided with a driving operation portion on the side, provided with a Glen tank (G) behind the driving operation portion Is provided with a suction dust exhaust fan (22) of a one-side suction type, a fuel tank (24) is disposed at the lower rear end of the threshing portion (3), and a fuel supply pipe (25) of the fuel tank (24) is provided, The dust discharge plate (23) for guiding the dust discharge from the suction dust discharge fan (22) toward the rear center side of the machine body is detoured, bent from the middle portion, and provided in an upright posture. Combine with.   A cover body (28) that covers the rear upper surface of the fuel tank (24) from the rear end portion of the threshing section (3) in the vicinity of the fuel outlet (26) of the fuel tank (24) is provided. The combine according to claim 1.

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