JPH0635870Y2 - Bonnet structure of work vehicle - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a structure of a bonnet for covering a radiator and an engine in a working vehicle such as a combine.

[Prior Art] There is a combine that is one of the work vehicles that has a cockpit on the upper surface of a hood that covers a radiator and an engine, and such a combine is disclosed in, for example, JP-A-57-86518. As disclosed, a hollow box-shaped wall is attached to the upper surface of the bonnet so as to surround the cockpit, and substantially the entire inner and outer surfaces of this wall are formed into an intake port with a dust-proof net. Some are configured to draw in cooling air from the radiator to the radiator. In this way, the intake port to the radiator is provided as high as possible in order to avoid a phenomenon in which the intake port is blocked by dust or the like.

[Problems to be solved by the device]

In the case of the above-mentioned structure, in order to avoid the reduction of the total area of the intake port, it is necessary to make the inner surface of the wall body (the surface on the cockpit side) substantially the entire surface of the intake port with the dust net. However, since the inner surface of the wall body faces the cockpit, dust and the like are likely to stay in the corner portion where the bonnet upper surface and the inner surface (intake port) of the wall body are in contact with each other. In this way, if dust is always in contact with part of the intake port, it may be sucked into the bonnet through the dust net due to vibration or the like even if it is equipped with a dust net. It may adhere to the radiator inside and develop into overheat.

Here, the present invention was made by focusing on the above-mentioned problems, and an object thereof is to obtain a structure in which dust is difficult to be sucked into the hood from the inner surface of the wall (the surface on the cockpit side). I am trying.

[Means for Solving the Problems]

A feature of the present invention is that in the bonnet structure of a work vehicle as described above, a cockpit is provided on an upper surface of a hood that covers a radiator and an engine, and a box-shaped wall body is attached to the bonnet so as to surround the cockpit. There is an intake port with a dustproof body that sends cooling air to the radiator inside the bonnet at a portion above the set height from the bottom side that contacts the upper surface of the bonnet on the surface of the wall on the cockpit side. The effects are as follows.

[Action]

As described above, avoid the vicinity of the lower side of the inner surface of the wall (the surface on the cockpit side) where dust is most likely to stay, and use the portion above the set height above this lower side as the intake port, and the portion below the set height from the lower side. Since the dust remains on the wall surface, even if dust is accumulated near the lower side, it is unlikely that the dust is sucked from the upper intake port.

[Effect of device]

As described above, on the inner surface of the wall on the bonnet (the surface on the cockpit side), the lower side where dust is most likely to stay is the wall surface, but the area of the intake port is slightly reduced, but It is possible to reduce the entry into the bonnet from the intake port and prevent overheating.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

Figures 1, 3, 4, and 5 show the structure around the control part of the combine, which is one of the work vehicles. The radiator (1) and the engine (2) are arranged on the right side of the front part of the fuselage. The (1) and the engine (2) are covered with a box-shaped bonnet (3).

A cockpit (4) is provided on the upper surface (3a) of the bonnet (3), and a hollow box-shaped first wall (5) and a cockpit (4) are provided on the right side of the cockpit (4). On the rear side, a hollow box-shaped second wall (6) is attached to the upper surface (3a) of the bonnet (3) so as to surround the cockpit (4). In this first wall body (5), a first intake port (5a) and a second intake port (5a) covered with punching metal as a dustproof body (7) on the inner surface (the surface on the side of the cockpit (4)) and the outer surface ( 5b) is provided. Then, as shown in FIGS. 1, 2, 3, and 4, on the inner surface of the first wall body (5), a wall surface (5) having a constant height at a lower side portion contacting the upper surface (3a) of the bonnet (3).
c) is provided, and the first intake port (5
The punching metal (7) of a) is connected. In this case, as shown in FIG. 2, the upper side of the wall surface (5c) is bent stepwise to form a rib, which enhances the strength.

In the second wall body (6), the front surface (the surface on the cockpit (4) side), the first intake port (6a) covered with the punching metal (7) on the upper surface and the rear surface, the second intake port (6b), and A third intake port (6c) is provided. Then, as shown in FIGS. 1, 3, and 4, the front surface of the second wall body (6) (the surface on the side of the cockpit (4)).
In the above, the wall surface (6d) having a constant height is formed on the lower side portion in contact with the upper surface (3a) of the bonnet (3).

With the above structure, the suction action of the fan (8) causes the outside air to serve as cooling air and the first and second intake ports (5) of the first wall body (5).
It is sent to the radiator (1) through a), (5b) and the first, second, third intake ports (6a), (6b), (6c) of the second wall body (6). The bonnet (3) is swingably supported around the longitudinal axis (p ₁ ) of the machine body,
The bonnet (3), the cockpit (4), and the first and second wall bodies (5), (6) can be integrally tilted to the right side of the machine for operation.

Further, as shown in FIGS. 5 and 6, a pair of left and right frames (8) extends forward from the vicinity of the lower portion of the hood (3) and the fuel tank (9) extends over the left and right frames (8). ) Is installed, and the upper surface of the fuel tank (9) serves as the floor surface of the control section. Then, the gauge (9a) of the fuel tank (9) is projected from the opening (8a) of the outer frame (8), and the fuel tank (9) is attached so that the inlet (9b) faces diagonally right rear. -ing

It should be noted that reference numerals are added to the claims of the utility model for convenience of comparison with the drawings, but the present invention is not limited to the structure of the accompanying drawings by the entry.

[Brief description of drawings]

The drawings show an embodiment of the bonnet structure of a work vehicle according to the present invention. Fig. 1 is a perspective view of the bonnet and the first and second wall bodies, and Fig. 2 is the wall surface of the first wall body on the cockpit side. FIG. 3 is a vertical sectional front view showing the structure of the bonnet and the first and second wall bodies, and FIG.
FIG. 5 is a vertical cross-sectional side view from the left side showing the structure of the second wall body, FIG. 5 is a right side view of the front half of the combine, and FIG. 6 is a perspective view of the floor near the control section. (1) …… Radiator, (2) …… Engine, (3)…
… Bonnet, (3a) …… Bonnet top, (4)…
… Pilot seat, (5), (6) …… Walls, (5a), (6a)…
… Intake port, (7) …… Dustproof body.

Claims (1)

[Scope of utility model registration request] 1. A cockpit (4) is provided on an upper surface (3a) of a bonnet (3) which covers a radiator (1) and an engine (2), and a box-shaped wall (that surrounds the cockpit (4)). 5) and (6) are attached to the bonnet (3), and are set from the bottom side of the walls (5) and (6) on the cockpit (4) side, which is in contact with the upper surface (3a) of the bonnet (3). A bonnet structure for a work vehicle in which a suction port (5a), (6a) with a dustproof body (7) for sending cooling air to the radiator (1) in the bonnet (3) is provided at a portion above the height.