JP3407123B2 - Engine cover device for construction machinery - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine cover device for a construction machine in which an engine having an exhaust system such as an exhaust pipe and a silencer is mounted on a machine body.

[0002]

2. Description of the Related Art FIG. 5 shows an example of a hydraulic excavator, and an upper revolving structure 1 which is the main body of the machine has an exhaust pipe 3 and a silencer 4.
The engine 2 equipped with the exhaust system is installed. Figure 6
As shown in, a cover 5 that covers the engine 2, the exhaust pipe 3, the silencer 4, and the like is attached to one side surface of the upper swing body 1 by a hinge 6 so as to be openable and closable. A stay 7 that holds the cover 5 in the open position is provided between the upper swing body 1 and the cover 5. The cover 5 is opened to hold and inspect the engine 2.

[0003]

In the above-mentioned conventional technique, when the cover 5 is opened for maintenance and inspection of the engine 2, the exhaust pipe 3 and the exhaust system of the silencer 4 are exposed. . Therefore, stop the engine 2 that was operating,
The worker always pays attention to avoid contact with the hot exhaust pipe 3 and muffler,
It is accompanied by considerable fatigue.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to provide a cover device capable of safely performing maintenance and inspection of an engine and easily performing maintenance and inspection of an exhaust system. To do.

[0005]

According to the engine cover device of the present invention, a first cover for covering the upper part of the engine and a second cover for covering the exhaust system are attached to the main body of the machine so that they can be opened and closed. It is characterized in that the second cover is configured to be closed in the opened state, and the stays for holding the first cover and the second cover in the open position are provided.

[0006]

The engine maintenance and inspection is performed with the first cover open and the second cover closed, and the exhaust system maintenance and inspection is performed with the second cover open.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an embodiment of the present invention shown in FIGS. 1 and 2 will be described.

The first cover 8 is formed so as to cover both the engine 2 and the second cover 9 that covers the exhaust system such as the exhaust pipe 3 and the silencer 4, and the upper revolving structure 1 is provided by the hinge 10.
It is mounted so that it can be opened and closed. The second cover 9 is attached to the upper swing body 1 by a hinge 11 so as to be openable and closable. Between the first cover 8, the second cover 9 and the upper swing body 1, there are provided stays 12 and 13 for holding the respective covers in the open position.

FIG. 1 shows a state in which the first cover 8 is opened,
The exhaust system is covered with the second cover 9. By maintaining and inspecting the engine 2 in this state, the operator does not touch the exhaust system. When the first cover 8 is open, the second cover 9 can also be opened arbitrarily as shown in FIG. 2, so maintenance and inspection of the exhaust system can be easily performed.

Next, another embodiment of the present invention shown in FIGS. 3 and 4 will be described. In both figures, the same or corresponding members as those shown in FIGS. 1 and 2 are designated by the same reference numerals.

The first cover 14 and the second cover 9 are formed in a two-divided shape in a plane, and each has a frame body 15.
Hinges 16 and 11 so that they can be opened and closed
Installed by. The frame body 15 is attached to the upper swing body 1 by a hinge 17 so as to be able to swing up and down. Between the upper swing body 1 and the frame body 15, the frame body 15 is located at a position where the frame body 15 is swung upward. A stay 19 for holding is provided. Between the first cover 14, the second cover 9 and the frame 15, there are provided stays 18 and 13 for holding the first cover 14 and the second cover 9 in the open position, respectively.

FIG. 3 shows a state in which the first cover 14 and the second cover 9 are both closed. Maintenance and inspection of the engine 2 are performed by opening the first cover 14. Since the second cover 9 is closed, the worker does not touch the silencer 4 or the like which is hot during the work.

Further, maintenance and inspection of the exhaust system such as the silencer 4 can be quickly performed by opening only the second cover 9 alone.

As shown in FIG. 4, the frame 15 is attached to the hinge 17
Both the first cover 14 and the second cover 9 can be swung upward by swinging upward with respect to. The frame body 15 can be fixed to the upper swing position by the stay 19. In this way, the first cover 14,
The second cover 9 can be opened together. Note that FIG. 4 shows a state in which the first cover 14 and the second cover 9 are opened with the hinges 16 and 11 as fulcrums, respectively, from the above-described state.

[0015]

As described above, according to the present invention, when the first cover is opened and the engine maintenance is performed,
Since the exhaust system is covered by the second cover, the worker does not come into contact with the hot exhaust system and does not need to be alert, so fatigue is reduced. Further, by opening the second cover, maintenance and inspection of the exhaust system can be easily performed.
Moreover, the second cover can protect the coating of the first cover from the heat of the exhaust pipe and the silencer.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention in which a first cover is open and a second cover is closed.

FIG. 2 is a perspective view showing a state in which both the first cover and the second cover are opened in the embodiment of FIG.

FIG. 3 is a plan view showing another embodiment of the present invention, in which the first cover and the second cover are in a closed state.

FIG. 4 is a perspective view showing a state in which the frame body is swung upward and both the first cover and the second cover are opened in the embodiment of FIG.

FIG. 5 is a perspective view showing an example of a conventional hydraulic excavator.

6 is an enlarged perspective view showing a state where an engine cover of the hydraulic excavator of FIG. 5 is opened.

[Explanation of symbols] 1 Upper revolving structure 2 engine 3 exhaust pipe 4 silencer 8 first cover 9 Second cover 10 hinge 11 hinges 12 stay 13 stay 14 First cover 15 frame 16 hinges 17 Hinge 18 stay 19 stay

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Claims (4)

(57) [Claims] 1. In a construction machine in which an engine having an exhaust system such as an exhaust pipe and a silencer is mounted on a machine body, a first cover covering an upper part of the engine and a second cover covering the exhaust system are provided to the machine body. It is configured to be openable and closable so that the second cover is closed when the first cover is open, and the stays that hold the first cover and the second cover in the open position are provided. Characteristic engine cover device. 2. The engine cover device according to claim 1, wherein the first cover is formed so as to cover both the second cover and an upper portion of the engine. 3. A cover device for an engine according to claim 1, wherein the first cover and the second cover are formed into a shape which is divided into two in a plane. 4. A cover device for an engine according to claim 3, wherein a frame is attached to the main body of the machine so as to be able to swing up and down, and a first cover and a second cover are attached to the frame so as to be openable and closable.