JP2619338B2 - Construction machine dust cover structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust cover structure for a construction machine such as a hydraulic shovel.

[0002]

2. Description of the Related Art In general,
In this type of construction machine, a tank cover for accommodating a fuel tank, a hydraulic oil tank, and the like is provided, and an engine hood is provided adjacent to the tank cover for accommodating the engine so that the engine can be opened and closed, Replenishment of fuel and the like is performed from an opening formed in the tank cover, and maintenance of the engine is performed by opening an engine hood.

In such a device, it is necessary to prevent intrusion of mud or the like from the tank cover opening at the time of work or the like. Therefore, conventionally, a dust cover is provided on the tank cover so as to be openable and closable so that the opening can be closed. Was configured. However, in this case, there is a gap between the tank cover and the engine hood because the engine hood is provided so that it can be opened and closed, and there is a concern that mud etc. may enter the engine room from this gap. is there. In particular, when the construction machine is a hydraulic shovel, a tank cover is arranged on one of the left and right sides of the work boom, and an engine hood is arranged behind the work boom and the tank cover. Mud, etc. generated during the work is likely to fall on the upper surface of the tank cover,
Intrusion of mud and the like from the gap is further promoted.

Therefore, as shown in FIG. 10, a gap S between the tank cover 6 and the engine hood 7 is covered with a flexible sheet material 18 provided between the tank cover 6 and the engine hood 7. Is advocated. However, in this case, the appearance is not impaired, and the sheet 18 is fixed to both the tank cover 6 and the engine hood 7 so that the sheet 18 is inadvertently lifted and the gap is not exposed. In addition to the need for complicated mounting, the seat 18 is repeatedly bent every time the engine hood 7 is opened and closed. There is a problem that it is inferior.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has been made in order to provide a dust cover structure for a construction machine which can eliminate these disadvantages. In a construction machine comprising a tank cover for accommodating tanks such as tanks and an engine hood provided adjacent to the tank cover and capable of opening and closing vertically, in order to close an opening formed on the upper surface of the tank cover. When the dust cover is provided, the dust cover is swingably supported by the tank cover so as to open and close the opening, and the tank cover is located at a position closer to the engine hood than the open / close dust cover. The fixed-side dust cover is integrally provided with the engine hood side edge of the fixed-side dust cover. And it is characterized in that it extends to the engine hood side beyond the boundary between the over and the engine hood.

According to the present invention, it is possible to prevent the intrusion of mud or the like from the gap between the tank cover and the engine hood without using a sheet material.

[0007]

Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a lower traveling body provided with a crawler type traveling body 2, 3 denotes an upper revolving body that is rotatably supported by the lower traveling body 1, and 4 denotes a lower revolving body that is supported by the upper revolving body 3 so as to be able to elevate. A driver's seat 5 is disposed on the left side of the upper revolving structure 3 with the work boom 4 interposed therebetween, and a tank cover 6 is disposed on the right side.
An engine hood 7 is provided at the rear of the driver's seat 5 and the tank cover 6 so as to be freely opened and closed in the vertical direction.

The tank cover 6 is integrally fixed to the frame main body 3a of the upper swing body 3, and a battery 8, a fuel tank 9, and a hydraulic oil tank 10 are accommodated and arranged in this order from the front to the rear. However, the upper surface of the tank cover 6 is provided with a substantially rectangular opening 6a long in the front-rear direction so as to be deviated to the driver's seat 5 side so that operations such as maintenance of the battery 8 and supply of fuel and hydraulic oil can be performed. Have been. Reference numeral 9a denotes a filler port of the fuel tank 9, and 10a denotes a filler port of the hydraulic oil tank 10.

On the other hand, a hinge bracket 11 is integrally fastened to a mounting seat 7a protruding from a lower surface of a front end portion of the engine hood 7 in a state of projecting rearward. Is a support member 3 integrally provided on the frame body 3a side via a support shaft (pivot shaft) 12 at a position deviated rearward from a front end edge of the engine hood 7.
The engine hood 7 is configured to be opened upward in a state where the front end portion of the engine hood 7 is lower than the support shaft 12.

Further, reference numeral 13 denotes an opening / closing dust cover in which the present invention is implemented, and reference numeral 14 denotes a fixed-side dust cover. On the lower surface of the rear end edge of the opening / closing dust cover 13, a mounting seat 13a is provided with an appropriate gap. A plurality of hinge brackets 15 are provided so as to protrude, and a front end of the hinge bracket 15 is integrally fixed to the mounting seat 13a. And the hinge bracket 15
In a state of being loosely fitted in a concave groove 6b formed in the peripheral portion on the rear side of the opening in the tank cover 6, a hinge fitting 16 provided integrally with the rear part of the concave groove 6b is provided with a support shaft (pivot shaft) 17 in a vertical direction. It is hinged so that it can be opened and closed, and is set so that the opening 6a can be opened and closed.

The fixed dust cover 14 is provided to cover a portion behind the portion covered by the open / close dust cover 13 of the tank cover 6, and a mounting seat 14a projecting from the lower surface thereof is attached to the tank cover 6. 6, the rear edge is extended to the range of the front end portion where the engine hood 7 moves downward and overlaps with the engine hood 7.

Incidentally, these dust covers 13 and 14
As shown by the two-dot chain line in FIGS. 6 and 7, the horizontal direction is set to a curved surface or an inclined surface so as to be gradually lower as the distance from the work boom 4 is increased, and the front and rear direction is gradually lower as the front side. ing. The left edge of the open / close dust cover 13 is bent in a substantially vertical plane shape, and is set to overlap the left upper end surface of the tank cover 6.

In the embodiment of the present invention constructed as described above, when the fuel supply to the fuel tank 9 and the hydraulic oil tank 10, the supply of the hydraulic oil, and the maintenance of the battery 8 are performed, these operations are performed by opening and closing the dust cover. 13 will be performed from the opening 6a exposed by lifting and opening,
The opening 6a is normally used for opening and closing the dust cover 1.
By closing the lower part 3, the lid is covered, thereby preventing intrusion of mud and the like from here, and in this state, necessary civil engineering work is performed. On the other hand, maintenance of the engine (not shown) is performed with the engine hood 7 opened.

As described above, according to the embodiment of the present invention, the opening 6a formed in the tank cover 6 can be opened and closed by using the opening / closing dust cover 13, while the tank cover 6 and the engine hood are opened. 7 is covered with a rear extension of the fixed side dust cover 14 which is integrally fixed to the tank cover 6, so that intrusion of mud or the like from here can be prevented.

In this case, the fixed-side dust cover 14 is extended to the engine hood 7 side and covers the gap, but its extension range is limited to the engine hood 7.
, Does not interfere with the opening operation of the engine hood. As a result, the fixed side dust cover 14 is a flexible sheet between the engine hood 7 and the tank cover 6. Unlike the structure in which the material is fixed and the gap is closed, it is not necessary to be configured to be bent every time the engine hood 7 is opened and closed, and can be configured with a rigid body, and the life can be extended. .

Moreover, these dust covers 13 and 14
Since the left and right direction is gradually lower as the distance from the work boom 4 is increased, and the front and rear direction is gradually lower toward the front side.
There is an advantage that the falling of mud and the like accumulated in the civil engineering construction work is promoted, which is convenient.

[0017]

In summary, since the present invention is constructed as described above, the opening formed in the tank cover can be opened and closed freely using the opening / closing dust cover.
The gap between the tank cover and the engine hood is covered by the rear extension of the fixed-side dust cover integrally fixed to the tank cover, so that mud or the like can be prevented from entering there. As a result, as in the case where the flexible sheet material is fixed between the conventional engine hood and the tank cover to close the gap,
It is possible to prevent the sheet material from being repeatedly bent each time the engine hood is opened and closed and the sheet material being torn early without being troublesome to mount or impairing the appearance. In addition, in the case where these dust covers are configured such that the left and right directions gradually become lower as the distance from the work boom increases, and the front and rear directions gradually become lower toward the front side, the fall promotion of mud and the like accumulated in the civil engineering construction work is performed. There is an advantage.

[Brief description of the drawings]

FIG. 1 is a side view of a construction machine.

FIG. 2 is a plan view of the construction machine.

FIG. 3 is a sectional view of a main part showing a state where a dust cover is attached.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a plan view of a dust cover.

FIG. 6 is a front view of the dust cover.

FIG. 7 is a side view of the dust cover.

FIG. 8 is a plan view of a tank cover.

FIG. 9 is a side view of the tank cover.

FIG. 10 is a plan view showing an attached state of a sheet material in a conventional example.

[Explanation of symbols]

 Reference Signs List 4 work boom 5 driver's seat 6 tank cover 6a opening 7 engine hood 12 support shaft 13 opening / closing side dust cover 14 fixed side dust cover

Claims (3)

(57) [Claims] 1. A construction machine comprising: a tank cover for accommodating tanks such as a fuel tank; and an engine hood provided adjacent to the tank cover and capable of opening and closing vertically. In providing a dust cover for closing the opening of the opening and closing dust cover, the opening and closing side dust cover swingably supported by the tank cover so as to close the opening so that the opening can be opened and closed; A fixed-side dust cover is provided integrally with the tank cover at the hood-side position, and an edge of the fixed-side dust cover on the engine hood side extends beyond a boundary between the tank cover and the engine hood. A dust cover structure for construction machinery, which extends to 2. The construction machine according to claim 1, wherein a driver's seat is disposed on one side in the left-right direction with a work boom provided to be able to be raised and a tank cover disposed on the other side. A hydraulic excavator with an engine hood arranged behind the work boom, and the dust cover gradually lowers in the left and right direction as it moves away from the work boom,
A dust cover structure for construction machinery, wherein the front-rear direction is set so as to be gradually lower toward the front. 3. The opening / closing pivot of the engine hood according to claim 1, wherein the opening / closing pivot of the engine hood is provided so as to be deviated toward the engine hood from a boundary position between the tank cover and the engine hood, and is closer to the tank cover than the opening / closing pivot of the engine hood. The part is configured to move downward when the engine hood is opened upward, while the fixed-side dust cover extends in the range of the downward movement part of the engine hood. .