JPH09132924A - Cover for inspection of construction machine and construction machine furnished with it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate maintenance and inspection work by extending an opening part and to improve a sound insulating effect and a thermal insulating effect by constituting a cover for inspection to cover a machine room in a sectionally roughly inverted L shape and making it free to open by springing it upward. SOLUTION: A cover 13 for inspection to cover a machine room 12 provided on an upper revolving superstructure 10 of a construction machine is provided. This cover 13 for inspection is constituted in a sectionally roughly inverted L shape by integrating a top cover part and a side cover part. Thereafter, the cover 13 for inspection is arranged to the left and right sides of a car body of the upper part revolving superstructure 10, and its base end side is connected to an upper wall part 14 in the neighbourhood of an upper surface central part of the upper part revolving superstructure 10 through a circular arc hinge plate 15. Thereafter, the cover 13 for inspection is made free to open by springing it upward with this pivotally installing part as a fulcrum. Consequently, as there is no clearance between the top cover part and the side cover part, it is possible to improve a sound insulating effect and a thermal insulating effect.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inspection cover for opening and closing a machine room provided in an upper swing body of a construction machine such as a hydraulic excavator and a construction machine including the inspection cover.

[0002]

2. Description of the Related Art Conventionally, for example, a hydraulic excavator 1 shown in FIG.
An upper surface and a side surface of a machine room 3 including an engine portion arranged in an upper revolving structure 2 of a construction machine such as are covered with an engine hood or a top cover (not shown) and a side cover 4 so as to be openable and closable. In the figure, 5 is a cab, and 6 is a working device such as a boom. In the hydraulic excavator 1 as described above, in order to maintain and inspect the upper surface or the central portion of the machine room 3, the engine hood is opened by climbing on the upper swing body 2 or the bolts of the top cover are removed to open the opening. It required troublesome work such as securing.

Also in daily inspection work, the oil level, the auxiliary tank of the radiator, the water level of the washer tank are inspected, supplemented, and the oil element is replaced. In that case, the side cover 4 is opened horizontally. Also, the engine hood or top cover is opened as necessary. Therefore, in a narrow place, the above-mentioned cover cannot be opened sufficiently, so that there is an inconvenience such that the working space cannot be sufficiently taken, or the engine hood and the top cover are opened, which is a troublesome work.

In addition, there is also known a structure in which a side cover provided on the side surface of a vehicle body is flipped upward with its upper edge portion as an axis. In this case, the radius of gyration corresponding to the height dimension of the side cover is also known. Since a minute space is required in the lateral (horizontal) direction, there is also a disadvantage that the working space cannot be sufficiently taken in a narrow place (see the comparison diagram of FIG. 2).

Further, since this conventional inspection cover is divided into two parts, the engine hood or the top cover and the side cover, sound and heat generated from the engine, the pump, etc. leak to the boundary part between them and heat is generated. balance,
There was a risk of causing problems such as noise.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and its main problem is that the operator's burden can be reduced when opening and closing the inspection cover, and sufficient maintenance for the machine room is performed. An object of the present invention is to provide an inspection cover that can secure a work space and a construction machine including the inspection cover.

[0007]

In order to solve the above-mentioned problems, the present invention takes measures to integrate a top cover portion and a side cover portion which cover a machine chamber. That is, in the invention of claim 1, in the inspection cover that covers the machine room provided in the upper swing body of the construction machine so as to be openable and closable on the upper surface and the side surface of the vehicle body, the cover is provided on the left and right lateral sides of the vehicle body of the upper swing body. Is provided on the vehicle to cover the top and side surfaces of the vehicle body,
One side thereof is pivotally attached near the center of the upper surface of the upper revolving superstructure, and a technical means is taken such that the pivotal portion can be lifted up to be opened to be opened. According to a second aspect of the present invention, in a construction machine including an inspection cover for opening and closing a machine room provided in an upper swing body of a construction machine on an upper surface and a side surface of a vehicle body, the cover is a body of the upper swing body. It is provided on the left right side and covers the upper surface and the side surface of the vehicle body, one side of which is pivotally attached to the center of the upper surface of the upper revolving superstructure, and this pivotal portion can be flipped upward to be opened, I am taking the technical means of. Further, claim 3
In the invention, the technical means is adopted in which the inspection cover is formed in a substantially inverted L-shaped cross section.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the inspection cover of the present invention is applied to a hydraulic excavator will be described below with reference to the drawings. Here, FIG. 1 is a front view of a construction machine in which a working device is omitted, FIG. 2 is a rear view of the same, and FIGS. 3 and 4 are left and right side views, respectively.

This hydraulic excavator has a structure in which an upper revolving structure is provided on a crawler type suspension device, and on the left and right sides of a machine room 12 arranged behind an operator riding cab 11, Two inspection covers for each pair
3 is openably and closably pivoted or hinged.

Since these inspection covers 13 have the same structure in the illustrated example, one of them will be described as an example. The inspection cover 13 is composed of a plate having a substantially inverted L-shaped cross section, and is configured to cover the upper left part and the left side face or the upper right part and the right side face of the machine chamber 12 in series. The base end side of the inspection cover 13 is connected to the upper wall portion 14 near the center between the left and right in the upper part of the upper revolving structure 10 via an arcuate hinge plate 15, and the arrow a is centered around this connecting portion.
It can be flipped up as shown by. Although a hinge plate is used in the illustrated example, other well-known hinged or pivotal structures may be used to connect the inspection cover 13 to the upper wall portion 14 in the present invention.

Further, upper and lower ends of a gas cylinder 16 as an example of a biasing means are pivotally attached to the left and right sides of the inner surface of the inspection cover 13 to reduce the operating force at the time of opening / closing and to inspect the cover. The inspection cover 13 is held in a state where the inspection cover 13 is fully opened (angle of about 90 °). In the figure, 17 is a handle, which is provided on the central outer surface of the lower portion of the inspection cover 13. In addition to the gas cylinder 16, an arbitrary known lock mechanism may be provided between the inspection cover 13 and the main frame 14, for example, to lock the inspection cover 13 in an open state.

In order to open the inspection cover 13 having the above structure, first, after unlocking the lock (not shown), the handle 17 is opened.
If it is lifted up while holding, the inspection cover 13 can be easily flipped up by the elastic force of the gas cylinder 16. The inspection cover 13 may be left in the state of being flipped up to the maximum, or may be separately locked in that state. As a result, the engine and the like are widely exposed, which makes it possible to easily perform necessary maintenance and inspection work.

When the inspection cover 13 is closed,
After unlocking as necessary, the inspection cover 13 is rotated downward, and the inspection cover 13 is locked by the latch connected to the handle 17. In addition, in the above-described embodiment, an example in which the inspection cover 13 is provided by dividing the upper revolving structure 10 into two pieces on each of the right and left sides, but the number of the inspection covers 13 is not particularly limited, and is not necessary. It may be decreased or increased accordingly.

[0014]

As described above, the inspection cover of the present invention has a structure in which the top cover portion and the side cover portion for covering the machine room are integrated, and therefore, FIG.
As compared with the side cover of the conventional flip-up structure as compared with, even if the margin of the lateral space is relatively small,
The inspection cover can be easily opened and closed. That is, as shown in FIG. 2, compared with the conventional flip-up type cover (shown by a chain double-dashed line), it can be opened and closed even if it is narrowed by the width of B-A. Further, naturally, it is not necessary to climb on the upper swing body and open the top cover or the like as in the conventional case. In addition, since the top cover part and the side cover part are integrated, the opening becomes wide on both the top surface and the side surface in the opened state, so that maintenance related to the engine and pump, inspection work, or hydraulic oil tank related Filter maintenance and inspection work will be easy. Furthermore, since the top cover part and the side cover part are integrated, the number of parts associated with these parts can be greatly reduced compared to the conventional one having both the top cover part and the side cover part. , By eliminating the gap between the top cover part and the side cover part,
The soundproofing effect and the heat shielding effect can be improved.

[Brief description of the drawings]

FIG. 1 is a front view of an embodiment in which an inspection cover is attached to a construction machine.

FIG. 2 is a rear view of the embodiment and is a diagram showing a comparison with a conventional side cover by an imaginary line.

FIG. 3 is a left side view of the embodiment.

FIG. 4 is a right side view of the same embodiment.

FIG. 5 is a perspective view showing a mounting state of an inspection cover in a conventional construction machine.

[Explanation of symbols]

 1 ... Hydraulic excavator 2 ... Upper swing body 3 ... Machine room 4 ... Side cover 6 ... Working device 11 ... Cab 12 ... Machine room 13 ... Inspection cover 15 ... Hinge 16 ... Gas cylinder

Claims (3)

[Claims] 1. An inspection cover for opening and closing a machine room provided in an upper swing body of a construction machine on an upper surface and a side surface of a vehicle body, the cover being provided on the left and right sides of the vehicle body of the upper swing body. The construction machine is characterized in that it covers the top and side surfaces of the vehicle body, one side of which is pivotally attached to the center of the top surface of the upper revolving superstructure, and this pivotal portion can be flipped upward to open. Inspection cover. 2. A construction machine including an inspection cover for opening and closing a machine room provided in an upper swing body of a construction machine on an upper surface and a side surface of a vehicle body, wherein the cover is on the left and right sides of the vehicle body of the upper swing body. It is provided on one side to cover the upper surface and side surfaces of the vehicle body, one side of which is pivotally attached to the center of the upper surface of the upper revolving structure, and this pivotal portion can be flipped upward to open. Construction machinery with a cover for inspection. 3. An inspection cover for a construction machine according to claim 1, wherein the inspection cover is formed to have a substantially inverted L-shaped cross section, and a construction machine including the inspection cover.