JP2000212997A - Support structure of side cover in construction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make workability good in attachment of a side cover by supporting a lower support pin with a support receiving body fixed in a manner being freely adjustable in the horizontal direction with respect to a fender in use of two upper and lower support pins for supporting the side cover. SOLUTION: The load of a side cover 10 is put on a first support receiving body 18 by setting the first support body 13 of the side cover 10 at the upper side of the first receiving body 18 and a second support body 15 at the lower side of a second support receiving body 21, and by keeping this state, the first support body 13, second support body 15, first support receiving body 18, and second support receiving main body 21 are subjected to position alignment to then be fastened by permitting a first support pin 14 and second support pin 16 to be screwed thereto. At this time, as-kept in a state where the side cover 10 is supported by the support receiving body 18 and support receiving body 21, the position of the first support receiving body 18 is adjusted by loosening a nut 19. Therefore, positioning work can be performed by one with respect to the fender 17 of the side cover 10, so that an efficiency of the work can be improved. Also, precise attachment can be done with correct and ready adjusting work.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a support structure for a side cover in a construction machine such as a hydraulic shovel.

[0002]

2. Description of the Related Art Generally, in a construction machine such as a hydraulic excavator, various members such as an engine, a battery, and an oil tank are mounted on a body frame, and these members are covered with a hood (cover body). Configuration. By the way, these member devices covered by the bonnet require inspection and maintenance. For this reason, a side cover that can be opened and closed is provided at an opening formed on the side of the bonnet, and maintenance is performed by opening the side cover. It has become. Conventionally, such a side cover is hinged so that it can be opened and closed via a plurality of upper and lower hinges at a position above a fender provided on the body frame.

[0003]

However, it is required that the side cover be mounted in a state where it is properly positioned with respect to the fender.
When attaching the side cover, it is necessary to tighten the upper and lower hinge screws while maintaining the positioning state after positioning while holding the side cover with loose play with the upper and lower hinge screws loosened. Become. And in this case, the positioning of the side cover with respect to the fender
While it is preferable to perform the operation with the side cover almost closed in order to see a gap or parallelism, it is necessary to open the side cover to tighten the upper and lower hinge screws in the bonnet. It is necessary to open the positioned side cover with care so as not to impair the positioning state, and to tighten the hinge screws while maintaining this state, so that the mounting work of the side cover is troublesome and complicated. However, there is a problem that workability is poor, and there is a problem to be solved by the present invention.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve these problems in view of the above-mentioned circumstances, and has a fender provided on a traveling body and a fender provided above the fender. In a construction machine having a side cover that can be freely opened and closed, the side cover is
It shall be supported by at least two upper and lower support pins so as to be openable and closable, of which the lower support pin shall be supported by a support receiver fixed to the fender so as to be adjustable in horizontal position. is there. According to the present invention, the position of the support receiver can be adjusted in a state where the side cover is directly supported by the fender, and mounting by one person is possible.

[0005]

Next, an embodiment of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 denotes a hydraulic excavator. The hydraulic excavator 1 includes a lower traveling body 2 and an upper revolving body 3 rotatably provided on the lower traveling body 2. It is conventional that a cabin 4 constituting a cockpit portion and a work attachment 8 including a boom 5, an arm 6, and a bucket 7 are provided.

The upper revolving unit 3 is provided with the cabin 4 and the work attachment 8 in front of the body frame 3a, and mounted with various members (not shown) such as an engine, a battery, and an oil tank in the rear. The device is configured to be covered by a cover 9. Openings for inspection and maintenance of the member device are formed on both left and right side surfaces of the cover body 9, and a side cover 10 in which the present invention is implemented is provided to be openable and closable. That is, although the side cover 10 is formed of a single plate made of a resin material,
The plate surface is a curved surface, and is formed so that the upper side is inclined toward the inside of the machine. And the side cover 1
Metal reinforcement plates 11 and 12 are integrally fixed to upper and lower portions on one inner surface in the front-rear direction of the metal plate 0, and a first support 13 is welded to the lower reinforcement plate 11 by welding or the like. Are fixed in a protruding manner inward through the fixing means. The first support 13 has a screw hole 13a formed in a vertically penetrating shape, and a screw portion 14b, which is a base end portion of a first support pin 14 for pivot support described later, is screwed together. Has become. A second support 15 is fixed to the upper reinforcing plate 12 in a protruding manner inward by fixing means such as welding. The second support 15 has a cylindrical hole 15a formed so as to penetrate in the vertical direction, and a cylindrical tip portion 16b of a second support pin 16 for pivot support described later is slidable (rotatable).
Is set to be inserted. And these first,
The second support members 13 and 15 are provided with upper and lower reinforcing plates such that the center of each of the screw hole 13a and the cylindrical hole 15a is aligned on the same axis M which is the opening / closing center of the side cover 10. The settings are fixed to 11 and 12.

On the other hand, fenders (mudguards) 17 formed in a substantially L-shape are fixed to the right and left sides of the body frame 3a. Are set in such a manner as to be provided in a parallel state in which they face each other. A first support receiver 18 is fixed to one side piece 17a serving as an upper surface of the fender 17,
The first support 13 fixed to the side cover 10 is set to be closely opposed from below. Here, the first support receiving member 18 has a concave hole 18a into which the cylindrical distal end portion 14b of the first support pin 14 screwed to the first support member 13 is inserted from above and slidably fits therein, An engaging projection 18b which projects downward and has a thread groove formed in the outer peripheral surface is formed, and the engaging projection 18b is inserted into a through hole 17b formed in the one side piece 17a of the fender. It is configured to be fixed to the fender 17 by screwing a nut 19 to the insertion tip. At this time, the diameter of the fender through-hole 17b is formed to be larger than the outer diameter of the engaging projection 18b (so-called fool hole), and the first support receiver 18 is formed.
Is set so that the position of the fender 17 can be adjusted.

Further, a support bracket 20 is provided on the body frame 3a, and a second support receiver 21 is fixed on the upper portion of the support bracket 20 by fixing means such as welding, and is fixed to the side cover 10. The upper supporting member 15 is set so as to be closely opposed from the upper side. The second support receiver 21 is provided with the fender 17
A screw hole 21a having a hole center substantially coinciding with the hole center of the concave hole 18a of the first support receiver 18 fixed to the first support receiving member 18 is formed, and the screw portion 1 of the second support pin 16 is formed in the screw hole 21a.
6a is set to be screwed.

The side cover 10 positions the first support 13 above the first support receiver 18 and the second support 15 below the second support receiver 21. 10 is set so as to apply a load to the first support receiver 18, and in this state, the centers of the holes are aligned so as to be substantially positioned on the same axis M, and then the first and second support pins 14 are set. , 16 are screwed into the first support 13 and the second support receiver 21, so that the side cover 1 is
0 is supported (attached) so that it can be opened and closed freely. Here, each of the supports 13 and 15 and the support receiver 1
Spacers 22 are interposed between 8 and 21, respectively, and the height of the side cover 10 can be adjusted by the spacers 22. Further, the first,
In the holding (attached) state in which the second support pins 14 and 16 are screwed, the nut 19 for fixing the first support receiver 18 is loosened, and the position of the engaging projection 19b is adjusted in the fender through hole 17a. The position of the first support receiver 18 is adjusted, whereby the positioning of the side cover 10 with respect to the fender 17 is performed. By tightening the nut 19 in this state, the setting of the side cover 10 is completed. In the drawing, reference numeral 23 denotes a washer.

In the embodiment of the present invention configured as described above, the side cover 10 provided on the upper swing body 3
As described above, the support is set so that the first support 13 of the side cover 10 is positioned above the first support receiver 18 and the second support 15 is positioned below the second support receiver 21. And load the side cover 10 to the first support receiver 1
8, and in this state, each support 13, 1
5. The support receivers 18 and 21 are aligned, and the first and second support pins 14 and 16 are attached by screwing. In this case, the screwed state, that is, the side cover 10 is attached.
By loosening the nut 19 and adjusting the position of the first support receiver 18 in a state where is supported by the support receivers 18 and 21, the side cover 10 can be positioned with respect to the fender 17. As a result, an operator for holding the side cover 10 as in the related art is not required, and the side cover 1 is not required.
Since the position of the fender 17 can be adjusted by one person, the work efficiency can be improved. Moreover, the position of the side cover 10 can be adjusted even when the side cover 10 is closed with respect to the cover body 9 even when the fender 17 is closed.
Can be performed by putting a hand on the lower side and loosening the nut 19, so that the side cover 10 can be closed and work can be performed while visually checking the positional relationship with the fender 17, so that the adjustment work can be performed. Accurate, easy and accurate mounting. In addition, since the side cover 10 is supported by the first support receiver 18 provided on the fender 17, the lower edge of the side cover 10 and the fender upper surface 17 are supported.
In addition, the adjustment between the first and second support pins is easy, and the first and second support pins 14 and 16 need only be screwed into the upper and lower support portions, respectively, so that the mounting structure and the working process can be simplified. Can be.

The present invention is, of course, not limited to the above-described embodiment. In the support portion located above the side cover, the relationship between the support and the support receiving member is reversed, that is, the relationship between the support and the support frame is reduced. The fixed support receiver may be arranged so as to be located below the support provided on the side cover side.In this case, a screw hole is provided in the support on the side cover located on the upper side. It is also possible to adopt a configuration in which the support pins are engraved and the support pins are screwed to the support body side.

[Brief description of the drawings]

FIG. 1 is an overall side view of a hydraulic excavator.

FIG. 2 is a partial cross-sectional front view of a side cover portion.

FIG. 3 is a partial front view showing an attached state of a side cover.

FIG. 4 is an exploded perspective view showing an attached state of a side cover.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hydraulic excavator 3 Upper revolving body 8 Work attachment 9 Cover body 10 Side cover 13 First support 14 First support pin 17 Fender 18 First support receiver 19 Nut 20 Support bracket 22 Spacer

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Takahiro Kawahito 7-1-14 Wadamiya-dori, Hyogo-ku, Kobe-shi, Hyogo F-term (reference) in Seiryo Engineering Co., Ltd. 2D015 CA03

Claims (1)

[Claims] In a construction machine having a fender provided on a traveling machine body and a side cover openably and closably provided above the fender, the side cover is openably and closably supported by at least two upper and lower support pins. A side cover support structure for a construction machine, wherein a lower support pin is supported by a support receiver fixed to a fender so as to be adjustable in a horizontal position.