JP2569853Y2 - Heat shield structure of fuel tank in work vehicle - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat shield structure of a fuel tank in a working vehicle such as a tractor.

[0002]

2. Description of the Related Art Conventionally, some working vehicles have a fuel tank disposed at a position above and behind the engine mounted on the front of the body.
It is proposed to increase the tank capacity by protruding a bulging portion that overlaps above the engine in the upper half of the fuel tank. However, in the case where a removable rocker cover (for covering a rocker arm or the like) is provided on the upper surface of the engine, and a heat shield plate is interposed between the engine and the fuel tank, when the rocker cover is attached or detached, There is a concern that the heat shield plate may hinder the attachment and detachment of the rocker cover. Therefore, as shown in FIGS. 6 and 7,
It is necessary to secure a space for attaching and detaching the rocker cover between the rocker cover and the heat shield plate. In this case, however, it is not possible to sufficiently increase the tank capacity, and it is not possible to increase the tank capacity. However, there is an inconvenience that the heat-shielding effect is reduced due to the close proximity to the device, which has been a problem.

[0003]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has been made in order to provide a heat shield plate structure of a fuel tank in a work vehicle which can eliminate these disadvantages. A fuel tank is located above and behind the engine with a removable rocker cover on the upper surface, and a heat shield is interposed between the engine and the fuel tank. In the traveling vehicle, when forming a protruding portion that overlaps above the engine in the upper half portion of the fuel tank so as to protrude, the heat shield plate is formed in a step shape having a predetermined interval from the lower surface of the protruding portion, A notch is formed at a position near the rocker cover of the heat shield plate to avoid interference with the rocker cover to be detached, and the notch is always covered with a detachable cover body. The one in which the features. According to the present invention, with this configuration, the tank capacity is as large as possible without obstructing the attachment and detachment of the rocker cover, and the heat shielding effect of the heat shield plate can be significantly improved. is there.

[0004]

Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes an engine mounted on a front part of the body of a tractor, and the engine 1 has a transmission case (not shown) via a clutch case 2.
A narrow rocker cover 3 for covering a rocker arm, a rocker shaft and the like (not shown) is detachably provided on the upper surface of the engine.

[0005] On the other hand, reference numeral 4 denotes a fuel tank having a replenishing port 4a on an upper surface thereof.
The fuel tank 4 has a bulging portion 4b projecting upward from the engine 1 in the upper half portion thereof. That is, the bulging portion 4b is used to increase the tank capacity.
However, a space H required for attaching and detaching the rocker cover 3 is secured between the lower surface of the bulging portion 4b and the rocker cover 3.

Reference numeral 5 denotes a heat shield plate provided between the engine 1 and the fuel tank 4, and the heat shield plate 5 is
Although formed in a stepped shape so as to follow the front surface of the fuel tank 4, a portion facing above the rocker cover 3 is separated from the bulging portion 4 b at a predetermined interval h, while being separated from the rocker cover 3. To be close to each other. Reference numeral 5a denotes a notch formed in a portion of the heat shield plate 5 close to the rocker cover. When the rocker cover 3 is attached or detached, the notch 5a has a rear end portion of the rocker cover 3 that blocks the bulge 4b. The space H is allowed to enter the space between the heat plate 5 and the space H is effectively used.

A cover plate 6 is detachably attached to the heat shield plate 5. When the cover plate 6 is removed, the notch 5a is formed as described above.
To allow the rocker cover 3 to be attached and detached while the cover plate 6 is attached to the heat shield plate 5 so as to cover the notch 5a so as to reliably block hot air from the engine 2. .

In the embodiment of the present invention constructed as described above, the heat shield plate 5 interposed between the engine 1 and the fuel tank 4 extends along the front surface of the fuel tank 4 having the bulging portion 4a. A notch 5a which is formed in a stepped shape but is always covered by a detachable cover plate 6 is formed at a position close to the rocker cover 3, so that the cover plate 6 is removed. In this state, the rear end of the rocker cover 3 is allowed to enter the notch 4b. That is, when attaching and detaching the rocker cover 3, the rear end of the rocker cover 3 enters the space between the bulging portion 4 b and the heat shield plate 5, so that the gap between the bulging portion 4 b and the heat shield plate 5 is formed. Is effectively used. Therefore, the distance H required for attaching and detaching the rocker cover 3 can be made as close to the rocker cover 3 as possible with the lower surface of the bulging portion 4b as compared with the related art in which the rocker cover 3 and the heat shield plate 5 are secured. As a result, the bulging portion 4
b can be made as large as possible to contribute to an increase in the tank capacity.

In addition, the lower surface of the bulging portion 4b and the heat shield plate 5 are
Since they are separated by a predetermined distance h, a heat insulating air layer can be secured between the bulging portion 4b and the heat shield plate 5, and the heat shielding effect can be greatly increased.

It should be noted that the present invention is not limited to the above-described embodiment and, for example, FIGS.
As shown in the second embodiment, the duct 7 communicating with the notch 5a by utilizing the space between the lower surface of the bulging portion 4b and the heat shield plate 5.
May be formed. That is, in the state where the cover plate 6 is removed in the second embodiment, the engine hot air blown into the duct 7 from the notch 5a is taken out from the outlet 8a formed in the side cover 8 of the engine 1 and used appropriately ( While the cover plate 6 is attached, the interior of the duct 7 can be used as a storage space for the supply pump 9 and the auxiliary fuel tank 10 while the cover plate 6 is attached. It has become.

[0011]

[Effects] In summary, the present invention is constructed as described above, so that a bulging portion that overlaps above the engine is formed in the upper half of the fuel tank to protrude to increase the tank capacity. However, the heat shield plate interposed between the engine and the fuel tank is formed in a stepped shape having a predetermined distance from the lower surface of the bulging portion, and a detachable cover body is provided at a position close to the rocker cover. A notch portion covered with is formed. That is, in the state in which the cover body is removed, the rocker cover to be detached is allowed to enter the notch, so that the interval required for attaching and detaching the rocker cover is not secured between the rocker cover and the heat shield plate. Therefore, it is only necessary to secure between the rocker cover and the lower surface of the bulging portion, and as a result, it is possible to make the lower surface of the bulging portion as close to the rocker cover as possible, thereby greatly contributing to an increase in the tank capacity. it can. In addition, since a heat insulating air layer is formed between the lower surface of the bulging portion and the heat shield plate, an excellent heat shield effect can be exerted while increasing the tank capacity.

[Brief description of the drawings]

FIG. 1 is a side view of a front portion of a body showing a fuel tank and a heat shield plate.

FIG. 2 is a side view of the same showing a removed state of the rocker cover.

FIG. 3 is an exploded perspective view of a fuel tank and a heat shield.

FIG. 4 is an exploded perspective view showing the second embodiment.

FIG. 5 is a perspective view showing another embodiment of the second embodiment.

FIG. 6 is a side view of a body front showing a conventional example.

FIG. 7 is a side view of the same showing a detached state of the rocker cover.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Engine 3 Rocker cover 4 Fuel tank 4b Swelling part 5 Heated plate 5a Notch part 6 Cover plate

Claims (1)

(57) [Scope of request for utility model registration] 1. A work tank comprising a fuel tank disposed at an upper rear portion of an engine having a removable rocker cover provided on an upper surface thereof, and a heat shield provided between the engine and the fuel tank. In the traveling vehicle, when forming a protruding portion that overlaps above the engine in the upper half portion of the fuel tank so as to protrude, the heat shield plate is formed in a step shape having a predetermined interval from the lower surface of the protruding portion, In addition, a notch portion for avoiding interference with the detachable rocker cover is formed at a position near the rocker cover of the heat shield plate, and the notch portion is always covered with a detachable cover body. Heat shield structure of the fuel tank in a working vehicle.