JPH08113044A - Fuel tank of combine - Google Patents

Abstract

PURPOSE: To prevent the damage of a fuel tank from happening by an obstacle from below by making the fuel tank of easily moldable resin, and arranging it on a chassis frame. CONSTITUTION: In a combine, a step where an operator places his feet on an upper surface is formed of a step frame 2, and a fuel tank is installed inside the step frame 2, and a lower part of the fuel tank is covered with a bottom plate 8 of the step frame 2, and is constituted so as to cover inside fuel sending hoses 5 and 5' with the bottom plate 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a combine,
The arrangement structure of a fuel tank.

[0002]

2. Description of the Related Art In a conventional combine, in order to make the combine compact, a technique of arranging a fuel tank below a step where an operator puts a foot so as not to interfere with a position where other members are arranged is a technique in which an actual flat plate 1- It is publicly known in 98725.
They have a structure in which pillars that are provided laterally on the left and right of a step frame are arranged at several places to mount and fix a fuel tank, and the lower part of the fuel tank has an open shape.

[0003]

However, in arranging the fuel tank below the step, a combine harvester is arranged on the front surface, and a crawler is arranged on the lower surface. It is a layout configuration that is easily affected by, and a strong thing of the fuel tank itself is required,
The hose that feeds the engine from the fuel tank was also exposed, which was a safety issue. In addition, the structure to be installed in the step frame needs to be a complicated structure such as providing uneven portions to provide the mounting and fixing portion on the fuel tank. It came to be desired.

[0004]

The present invention is configured as follows in the arrangement structure of the combine fuel tank.
That is, in the combine, the step of placing an operator's foot on the upper surface is formed by the step frame, the fuel tank is internally provided in the step frame, and the lower portion of the fuel tank is covered by the bottom plate of the step frame. Is configured to cover the fuel feeding hose.

[0005]

[Function] The fuel tank is protected by disposing the plate member below the fuel tank. Further, since the plate material also protects the fuel oil supply hose at the same time, the mounting position of the crawler can be brought closer to the step, and the fuel tank can be efficiently installed on the chassis frame.

[0006]

The problems and configurations to be solved by the present invention are as described above, and the embodiments of the present invention shown in the accompanying drawings will be described below. 1 is a right side view of a combine adopting the present invention, FIG. 2 is a left side view of an operating portion A, FIG. 3 is an inner side view of a step frame in which a fuel tank is installed, FIG. 4 is a plan view of the same, and FIG. Is also a front view, FIG. 6 is a plan sectional view of a deformable baffle plate that functions as a weir inside the fuel tank, FIG. 7 is a plan sectional view of another shape of the deformable baffle plate, and FIG. 8 is also a deformable baffle plate. FIG. 9 is a side sectional view showing a liquid level state in the fuel tank when the machine body is inclined forward.

The overall structure of the combine will be described with reference to FIGS. 1 and 2. The chassis 11 is disposed on a crawler traveling device that supports the left and right crawlers 22, and the operation portion A is disposed on the right side of the upper portion of the chassis 11. In the operation section A, a step frame 2 formed by covering the fuel tank 1 is fixedly mounted on a chassis 11, a front column 10 is erected at a front part on the step frame 2, and immediately after that,
A step floor 3 on which an operator puts his / her feet is arranged on the upper surface of the step frame 2, and a seat base 12 which covers the engine E and doubles as an engine room is erected immediately after the step floor 3. Seat 13 is mounted on the top. The seat base 12 is provided with an intake port 12b as shown in FIG. 1, and an intake duct 12c is provided inside as shown in FIG. 2 so as to be directly connected to the radiator R of the engine E and also to the intake duct 12c. More intake air for engine combustion is taken in through the air cleaner.

Further, side frame support pillars 14a and 14b are erected from the left side of the step frame to support the side frame 14 extending from the front column 2 to the fried grain conveyor 18 which will be described later. It forms a boundary between the part A and the reaping part B on the left side thereof, and a side plate 15 is attached below the side frame 14 on the left side portion of the step floor 3, and also on the left side of the seat 13, a seat base is provided. The guard plate 12a is interposed between the side frame 12 and the side frame 12 to prevent a worker working in the operation section A from entering the cutting section B described later.

Further, on the left side of the operation portion A, in front of the chassis 11, a mission case M for suspending the axles of the drive wheels 22a, 22a of the crawlers 22, 22 is provided, and the mission is transmitted from the output pulley 16 of the engine E. The belt is transmitted to the input pulley 17 of the case M. Further, the operation unit A
At the rear of the seat 12 at the rear end position, there is a fried conveyor 1
8 is arranged in the up-down direction, the upper end thereof is connected to the Glen tank 19, and below the Glen tank 19 is a paddy storage unit 20 on which the paddy bag is placed, and the funnel-shaped Glen tank 19 is provided. It is possible to store the more loose rice in a rice bag. Then, on the left side of the chassis 11, a threshing unit having a handling cylinder, a feed chain and the like installed in the upper portion, and a sorting unit having a sorting device such as a Kara-mino fan and a swing sorting device installed in the lower portion are arranged. The threshing / sorting section C is formed. Further, in front of the threshing / sorting unit C and in front of the mission case M (on the left side of the operation unit A), the raising device 23 and the cutting blade 2 are provided.
Mowing unit B which has 4 etc. and cuts grain culms and conveys them to the threshing unit.
Is formed. The grain culm transported from the cutting unit B is threshed in the threshing unit, the paddy is sorted in the sorting unit, the paddy is transported to the fried conveyor 18, and is stored in the grain tank 19.

Next, the support structure of the fuel tank 1 in the step frame 2 will be described with reference to FIGS. 3 to 5. As a support member for the fuel tank 1 in the step frame 2, a front fixing plate 2a is provided so as to project horizontally from the front portion, and a rear fixing plate 2b is fixedly provided on the bottom surface of the rear portion in the left-right direction. On the other hand, in the fuel tank 1, the upper part is protruded forward in a front view in a side view, the front mounting part 1c is formed, and the central upper part is recessed downward in a plan view to form the front fixing part 1a. The front fixing plate 2a is locked with locking bolts and nuts 4, and the rear upper portion of the fuel tank 1 also projects rearward to form the rear mounting portion 1d. Like the front mounting portion 1c, two rear right and left side fixing portions 1b and 1b are formed in a plan view like the front mounting portion 1c. The fuel tank 1 is supported and fixed to the. In this way, only the front end and the rear end of the fuel tank 1 are bolted and arranged.
Installation becomes easy. Further, the complicated structure shown above can be easily manufactured by using the resinous fuel tank 1.

A fuel supply port 32, a fuel return port 33, and a baffle plate 30 are provided on the lower surface of the fuel tank 1. The fuel supply port 32 has a concave portion 32a formed inwardly from the outer side portion toward the central portion in a substantially central portion of the lower surface of the fuel tank 1 in the front-rear direction, and has an end portion 32b in front view. Such a fuel supply port 32 is provided so as to project outward. Similarly, the fuel return port 33 also has a recess 33a extending toward the center on the side surface of the rear portion of the fuel tank 1, and the fuel return port 33 is provided at the end 33b thereof so as to project outward.

The baffle plate 30 is a flat plate-shaped baffle plate 30. 3 which protrudes upward from the lower surface as shown in FIG.
By forming 0, bubbles formed at the time of suction from the fuel filler port 1f and empty bubbles contained in the fuel returned from the fuel return port 33 are not sucked into the fuel supply port 32.

As for the shapes of the step frame 2 and the fuel tank 1, as shown in FIG. 3, the front bottom surface and the rear bottom surface are offset from each other in height so that the rear bottom surface is raised. This is because the right crawler 22 is arranged below the portion. Further, the fuel in the fuel tank 1 is fed into the feed pump 7 from the fuel supply port 32 or the oil feed hose 5 through the small filter 6 as shown in FIG.
And the surplus fuel in the engine E is supplied to the oil supply hose 5 '.
And is returned from the fuel return port 33.

Since the fuel supply hose 5 is connected as shown in a plan view in FIG. 6 without the fuel supply port 32 projecting downward from the lower surface of the fuel tank 1, the fuel supply hose 5 is arranged. The bottom plate 8 is provided on the lower surface of the step frame 2 with a space provided therebetween.
3 can be arranged to the bottom plate 8c ′, 8c, 8c ″ from the front in a side view as shown in FIG. 3 according to the shape of the lower surface of the fuel tank 1. Further, the oil feed connected to the fuel supply port 32 The crawler 22 described above is driven immediately below the hose 5 and the oil feeding hose 5 ′ connected to the fuel return port 33, and at this time, the bottom plate 8 is arranged even if soil in the field adheres and rotates. This does not affect the oil supply hoses 5 and 5 '. Further, the bottom plate 8 may be provided with a drain cover so that the oil can be discharged if the oil overflows during refueling.

Further, a step floor 3 is installed above the step frame 2. The left and right ends of the step floor 3 are fixed to the upper surface of the step frame 2 with bolts and nuts. Thus, in step S, the side surface is covered with the step frame 2, the bottom surface is fixed with the bottom plate 8, and the step floor 3 is fixed with the upper surface. Therefore, the step S has a box shape and has a high strength structure. Further, at the same time, the fuel tank 1 has a double structure by being installed in the step S, and the fuel tank 1 is sufficiently protected, so that the fuel tank 1 can be formed in a thin shape and is lightweight. Can be configured.

The fuel inlet 1f is provided so as to project from the front right side of the upper surface of the fuel tank 1, and a fuel amount indicator 1g is provided so as to project to the side thereof, both of which are on the upper surface of the step frame 2. It projects upward through a notch provided in front of the step floor 3 and immediately behind the operating portion A, and the tip of the fuel filler port 1f faces outward from the upper surface of the step frame 2 (step floor 3) as shown in FIG. Since the tip of the fuel filler port 1f coincides with the vertical upper side of the right side surface of the step, even if fuel leaks at the time of refueling, the fuel does not spill outside and does not spill on the step floor 3. Further, a fuel receiver 35 into which the fuel filler port 1f is fitted is integrally provided at the front part of the right step frame 2 so as to deform a member such as a rubber mat that constitutes the step floor 3 or attach it to a worker's foot. There is no danger of

Further, as shown in FIG. 6, the baffle plate 31 has baffle plates 31 and 31 which are arcuate in plan view at the front and rear positions of the fuel supply port so that their openings face each other and the centers thereof are offset from each other in the left-right direction. By arranging them so as to wrap, the fuel flows into the front part or the rear part when the airframe is tilted in the front-rear direction, and when the amount of fuel is small at that time, the fuel is supplied to the fuel supply port 32 arranged in the central part. Although air does not spread and the air enters, as shown in FIG. 9, the arc-shaped baffle plate 31 of the fuel functions as a weir, and the liquid level F does not endure and the upper side of the fuel supply port 32 can be maintained. Also,
Instead of the arc-shaped baffle plate 31, a U-shaped baffle plate 31 ′ in plan view may be used as shown in FIG. 7. Alternatively, a baffle plate 31 ″ having a structure in which one of the left and right sides is closed as shown in FIG. 8 may be used.

[0018]

Since the present invention is constructed as described above,
The following effects are obtained. That is, the fuel tank is internally provided in the step frame, and the bottom structure of the fuel tank is covered with the bottom plate, so that the thickness of the fuel tank can be reduced and the weight can be reduced. By interposing the oil supply hose in the double structure, the influence of the crawler is eliminated, the crawler traveling device and the fuel tank can be placed close to each other, and as a result, the center of gravity can be lowered and stable traveling can be achieved. it can.

[Brief description of drawings]

FIG. 1 is a right side view of a combine adopting the present invention.

FIG. 2 is a left side view of an operation unit A.

FIG. 3 is an internal side view of a step frame in which a fuel tank is installed.

FIG. 4 is a plan view of the same.

FIG. 5 is a front view of the same.

FIG. 6 is a plan cross-sectional view of a modified baffle plate that functions as a weir inside the fuel tank.

FIG. 7 is a plan sectional view of another shape of the deformable baffle plate.

FIG. 8 is a plan sectional view of another shape of the modified baffle plate.

FIG. 9 is a side sectional view showing a liquid level state in the fuel tank when the machine body is tilted forward.

[Explanation of symbols]

 1 Fuel Tank 2 Step Frame 3 Step Floor 5.5 'Fuel Refueling Hose 8 Bottom Plate

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kasei Higashi 1-32, Chayacho, Kita-ku, Osaka-shi, Osaka Prefecture Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Kato Ando 1 Chaya-cho, Kita-ku, Osaka-shi, Osaka No. 32 Yanmar Agricultural Machinery Co., Ltd.

Claims (1)

[Claims] 1. In the combine, a step of placing an operator's foot on the upper surface is formed by a step frame, a fuel tank is internally provided in the step frame, and a lower portion of the fuel tank is covered by a bottom plate of the step frame, A combine fuel tank, characterized in that the bottom plate covers the fuel oil supply hose.