JP2583654Y2 - Side cover opening and closing structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a structure of a side cover mounted on a side of a vehicle body of a construction machine such as a hydraulic shovel or a working vehicle.

[0002]

2. Description of the Related Art FIG. 6 is a perspective view of a main part of a hydraulic shovel equipped with a conventional side cover 1. As shown in FIG. In the figure,
Reference numeral 2 denotes a lower traveling body of the excavator, 3 denotes an upper revolving superstructure, 4 denotes a hinge connecting the side cover 1 to a side surface of the upper revolving superstructure 3, 5 denotes an engine, and 6 denotes a counterweight.
As shown in FIG. 6, the conventional side cover 1 is attached via a hinge 4 so that it can be opened and closed in the left and right front and rear directions in order to perform maintenance inside the upper rotating body (3).

[0003]

Conventionally, the outer peripheral surface of the side surface portion of the upper revolving structure of a hydraulic shovel has a generally planar shape in many cases. However, in recent hydraulic excavator models, various considerations have been given to a structure in which the upper revolving structure has a round shape, and therefore, a side cover having a curved surface whose outer peripheral surface bulges outward is opened and closed in the left and right directions. . However, the operation to open and start the side cover with the curved surface was not successful. The purpose of the present invention is to solve the above problems.

[0004]

[ MEANS FOR SOLVING THE PROBLEMS]
Bracket for girder cover and car fixed to upper structure
A body-side bracket, the cover bracket, and the vehicle body
A connecting link connecting the side bracket and the connecting link;
And a stopper for restricting rotation of the
Was .

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side view of a main part of a hydraulic shovel equipped with the side cover 7 of the present invention. In the figure,
8 is an upper revolving structure, 9 and 9 'are a pair of front and rear connecting links connecting the vehicle body side of the upper revolving structure 8 and the side cover 7,
Reference numeral 10 denotes a handle provided on the side cover 7, and reference numeral 11 denotes a counterweight. FIG. 2 is a partially cutaway rear view of the side cover 7 as viewed from the rear side. FIG. 3 is a detailed view of a portion A in FIG. In the drawing, reference numeral 12 denotes a stay member fixed inside the upper swing body 8, reference numeral 13 denotes a stopper fixed to the stay member 12, and reference numeral 14 denotes a mounting washer fixedly provided on an upper portion on the inner surface side of the side cover 7. , 15 is a cover side bracket, 16 is a vehicle body side bracket, 17 is an inner link lever, 18 is an outer link lever, 19, 20, and 2.
Reference numerals 1 and 22 denote pins for connection, and reference numerals 23 and 24 denote bolts for mounting. FIG. 4 is a view of the connecting link 9 and the stopper 13 in FIG.

Next, the opening and closing structure of the side cover 7 according to the present invention will be described with reference to FIGS. As shown in FIG. 1, the side cover 7 is connected to the vehicle body side of the upper revolving unit 8 by a pair of front and rear connection links 9, 9 ', but since the connection links 9 and 9' are structurally the same. The embodiment will be described with the connecting link 9 as a representative. In the present invention, the cover-side bracket 15 is fixed to the upper portion on the inner surface side of the side cover 7, and the vehicle-body-side bracket 16 is fixed to the stay member 12 fixed to the inner side of the upper swing body 8 by bolts (23, 24). Fixing and mounting, cover side bracket 15
And the inside end of the vehicle body side bracket 16 is connected via an inside link lever 17, and the outside end of the cover side bracket 15 and the outside end of the body side bracket 16 are connected to the outside link lever 18. A stopper 13 is fixed to the stay member 12 facing the inner lower surface 25 of the inner link lever 17, and when the side cover 7 is closed, the contact surface 26 of the stopper 13 It is set so as to have a slight gap (gap of dimension S shown in FIG. 3) between the inner lower surface 25 of the link lever 17 and
When the opening operation of the side cover 7 is started, the inner lower surface 25 of the inner link lever 17 abuts against the abutting surface 26 of the stopper 13, thereby restricting the operation of tilting inward of the connecting link 9.

Next, the operation of the opening and closing structure of the side cover 7 according to the present invention will be described. FIG. 5 is a rear view of the connecting link 9 according to the present invention without the stopper (13) attached thereto. As shown in FIG. 5, when the side cover 7 starts to be opened as shown by the arrow A in a state where the stopper (13) is not attached, the connecting link 9 turns inward, and the upper part of the inner link lever 17 or the cover side The inner end of the bracket 15 may come into contact with the a portion of the stay member 12 in some cases. Also, the upper end 2 of the side cover 7
7 comes into contact with the corner b of the guard 28 of the upper swing body 8. Not only does the side cover 7 not open smoothly due to the abutment, but also the abutting portions a and b are galling damaged. However, as shown in FIG.
3 is fixed to the stay member 12, the side cover 7
When the opening is started, the inner lower surface 2 of the inner link lever 17 is opened.
5 comes into surface contact with the contact surface 26 of the stopper 13. Therefore, the galling phenomenon does not occur in the portion in contact with the surface.
The connecting link 9 does not further tilt inward. That is, it contacts the upper portion of the inner link lever 17 or the stay member 12 of the cover-side bracket 15,
Alternatively, the problem that the upper end 27 of the side cover 7 contacts the corner of the guard (28) of the upper swing body 8 does not occur. Therefore, as shown in FIG. 2, the side cover 7 can be smoothly opened in the directions of arrows B and C.

[0008]

[Effects of the Invention] In recent models of hydraulic excavators, there are various types of structures for opening and closing a side cover having a curved surface such that an upper revolving body has a round shape and an outer peripheral surface bulging outwards in the left and right directions. Has been taken into account. However, the operation of opening the side cover having the curved surface and starting to open did not work. In the present invention, the inside of the side cover
Cover bracket on the side
Body bracket and the cover bracket and front
A connecting link for connecting to the vehicle body side bracket,
A stopper for restricting the rotation of the connection link toward the upper revolving superstructure.
It was comprised having . Thus, when the opening operation is started by holding the handle of the side cover, the connecting link comes into surface contact with the contact surface of the stopper. Therefore, the galling phenomenon does not occur in the portion in contact with the surface. The connecting link does not tilt further inward. This allows the side
The problem that the cover does not needlessly come into contact with the guard or the like of the upper swing body does not occur. Therefore, the side cover can be smoothly opened and operated.

[Brief description of the drawings]

FIG. 1 is a side view of a main part of a hydraulic shovel equipped with a side cover according to the present invention.

FIG. 2 is a partially cutaway rear view of the side cover of the present invention as viewed from the rear side.

FIG. 3 is a detailed view of a portion A in FIG. 2;

FIG. 4 is a view of the connecting link and the stopper in FIG.

FIG. 5 is a rear view showing a state in which a stopper has not yet been attached to the connecting link according to the present invention.

FIG. 6 is a perspective view of a main part of a hydraulic excavator equipped with a conventional side cover.

[Explanation of symbols]

 1,7 Side cover 3,8 Upper revolving body 9,9 'Connecting link 10 Handle part 12 Stay member 13 Stopper 15 Cover side bracket 16 Body side bracket 17 Inner link lever 18 Outer link lever 25 Inner lower surface 26 Contact surface

Claims (1)

(57) [Scope of request for utility model registration] 1. A cover cover provided inside a side cover.
Racket and body side bracket fixed to the upper structure
And the cover bracket and the vehicle body side bracket
Link and an upper revolving structure of the link
A side cover opening / closing structure having a stopper for restricting rotation to the side.