KR20090033606A - Option pipe fixing device of excavator short swing radius type - Google Patents

Abstract

An option pipe fixing apparatus of a small pivoted excavator is provided to prevent the option pipe from being interfered with adjacent parts minimizing the radius of curvature of the option pipe fixed adjacently to a boom fixing pin. The option pipe fixing apparatus of a small pivoted excavator consists of a working apparatus composed of a lower traveling body and an upper revolving body(2) pivotally mounted on the lower traveling body, and a boom(3) fixed to the upper revolving body. The option pipe fixing apparatus is composed of a boom support frame(9) mounted on the upper revolving body, in which a boom is moved rotatably; and an option pipe fixing bracket(10) fixed to the boom support frame to fix an option pipe(5). If the boom is ascended/descended by the maximum height, the radius of curvature of the option pipe fixed to the option pipe fixing bracket is adjacent to a fixing pin(8) of the boom and is minimized.

Description

Option pipe fixing device of excavator short swing radius type

1 is a schematic view of a typical small swing excavator,

Figure 2 is a schematic view of the option pipe fixing device of a small swing excavator according to the prior art,

3 is a schematic view of the option pipe fixing device of a small swing excavator according to an embodiment of the present invention,

Figure 4 is a front view of the option pipe fixing device of a small swing excavator according to an embodiment of the present invention.

* Explanation of symbols used in the main part of the drawing

One; Undercarriage

2; Upper swing structure

3; Boom

4; Main piping

5; Option piping

8; Push pin

9; Boom Support Frame

10; Option piping fixing bracket

11; connector

The present invention is to remove the bucket from the front end of the working device according to the working conditions, and to supply the hydraulic fluid to the option device to work by replacing with an optional device such as a breaker (quick coupler, rotator, crusher, etc.) It is related to the option pipe fixing device of small swing excavator to fix).

More specifically, even when the boom is raised or lowered to its maximum height, the radius of curvature of the option piping fixed to be adjacent to the boom fixing pin is minimized so that the adjacent parts (functional items or hydraulic pipes mounted on the upper swing structure) are minimized. It relates to an option pipe fixing device for a small swing excavator that can be prevented from being interfered with.

In general, swing excavators are divided into standard and small swing type.

In the standard swing excavator, the rear end of the upper turning body is the front and rear part of the lower traveling body when the upper swing body is in a forward / backward direction with respect to the lower traveling body. Protruding outward from the end of the upper pivot, and the rear pivot of the upper pivot is lower when the upper pivot is in the transverse direction with respect to the lower pivot (the posture of the work device is perpendicular to the traveling direction of the lower pivot). It means the equipment which protrudes outward from the left and right sides (ends in the direction perpendicular to the running direction) of the traveling body.

Therefore, since the distance from the rear end of the upper swing structure to the pivot center is long and the rear rotation moment of the upper swing structure is large, it is difficult to fall by the front rotation moment generated by the excavation force of the working device. This enables greater digging force, thus improving workability.

As shown in FIG. 1, in the small swing type swing excavator, the rear end portion of the upper swing structure 2 is the lower traveling body when the upper swing structure 2 is in a forward and backward direction with respect to the lower travel structure 1. It is included in the front and rear portions of (1), and when the upper swinging body 2 is in the transverse direction with respect to the lower traveling body 1, the rear end of the upper swinging body 2 is in the left and right sides of the lower traveling body 1. Speak equipment included.

In the drawings, reference numeral A denotes a working device including a boom, an arm, a bucket, and a hydraulic cylinder driving the respective ones.

Therefore, since the rear end of the upper swinging body 2 is included in the front, rear, left and right sides of the lower traveling body 1, it does not interfere with obstacles near the lower traveling body 1, thereby ensuring safety when turning, The turning operation is excellent. Even if there is an obstacle near the lower running body 1, the upper swinging body 2 can be turned, so that it is easy to work in a narrow workplace.

At this time, "before and after" and "left and right part" means a direction or a side with respect to the driver of the driver's seat.

As shown in Fig. 2, the option pipe fixing device of the small swing excavator according to the prior art has a relatively narrow space between the boom 3 and the inside of the upper swing structure due to the equipment characteristics of the small swing excavator. Thus, when the main boom (4) (relatively large in diameter) and the option duct (5) are fixed above the boom (3) when the boom (3) is raised to the maximum height or lowered, the boom (3) Option pipe (5) fixed to the side is interfered with the adjacent parts (swing motor, main pipe, etc.) to be mounted on the upper swing has a problem that can not be assembled.

In view of this, the main control valve (not shown) (MCV) is fixed by fixing a separate clamp 6 on the side of the boom 3 without fixing the main pipe 4 and the option pipe 5 on the boom 3. An optional piping 5 is installed between the and the boom 3. At this time, if the option piping (5) consists of several strands to work by replacing a variety of optional devices according to the working conditions has a difficulty in installing.

That is, since it is impossible to secure enough space other than the inner side of the upper swing body or the main control valve, all kinds of main pipe and option pipe are installed around the boom and the main control valve. At this time, due to the shape of the cover is coupled to protect the main control valve can not secure enough space to install the main piping and option piping.

In addition, since the main piping and option piping are installed around the boom and the main control valve, the appearance of the equipment is rough. The hydraulic piping is installed next to the boom by passing through the frame of the upper swing structure. It is difficult and has a problem of poor workability.

Embodiment of the present invention, when fixing the option pipe to the work device to work by replacing the option device in the work device according to the working conditions, the radius of curvature of the option pipe is minimized when the boom is raised or lowered to the maximum height Therefore, it is related to the option pipe fixing device of the small swing excavator that can install and assemble various types of option pipes even in the narrow space of the upper swing structure.

Embodiment of the present invention, as the option pipe is arranged to the rear of the boom is neat appearance, and the main pipe and the option pipe is fixed on the boom without passing through the upper frame so as to improve the assembly and maintainability to assemble them It is associated with an optional plumbing fixture for a small swing excavator.

An optional pipe fixing device for a small swing excavator according to an embodiment of the present invention, a work device including a lower running body, an upper swinging body rotatably mounted on the lower running body, and a boom fixed to the upper swinging body. In the optional piping fixed device of a small swing excavator,

A boom support frame mounted on the upper swing structure and fixed to the boom in a rotatable manner,

Including an optional pipe fixing bracket that is fixed to the boom support frame and the option piping is fixed,

When the boom is raised or lowered to its maximum height, the radius of curvature of the option pipe fixed to the option pipe fixing bracket is minimized by adjoining the fixing pin of the boom.

According to a preferred embodiment, the above-described option pipe may be connected to the option pipe fixing bracket by being connected by a separate block.

The above-described option pipe may be connected to each other by a separate connector and fixed to the bracket for fixing the option pipe.

The above-described option pipe may be fixed to either one of the top and bottom surfaces of the boom support frame.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to describe in detail enough to enable those skilled in the art to easily practice the present invention. It is not intended that the technical spirit and scope of the invention be limited.

As shown in Figure 3 and 4, the option pipe fixing device of a small swing excavator according to an embodiment of the present invention, the lower running body, the upper swing body rotatably mounted on the lower running body, the upper In the option pipe fixing device of a small swing excavator comprising a working device including a boom fixed to the swing structure,

A boom support frame 9 mounted to the upper swinging structure 2 and to which the boom 3 is rotatably fixed;

Including an option pipe fixing bracket (10) fixed to the boom support frame (9), the option pipe (5) is fixed,

When the boom 3 is raised or lowered to the maximum height, the radius of curvature of the option pipe 5 fixed to the option pipe fixing bracket 10 is minimized by being adjacent to the fixing pin 8 of the boom 3. .

The option pipe 5 may be connected to each other by a separate block (not shown) to be fixed to the bracket for fixing the option pipe 10.

The option pipe 5 may be connected by a separate connector 11 to be fixed to the bracket for fixing the option pipe 10.

The option pipe 5 may be fixed to either one of the top and bottom surfaces (not shown) of the boom support frame 9.

Hereinafter, with reference to the accompanying drawings an example of the use of the option pipe fixing device of a small swing excavator according to an embodiment of the present invention.

Remove the bucket from the tip of the work device (arm) according to the working conditions so that the equipment can be used for various purposes, and then install the optional pipe (5) to supply the hydraulic fluid to the optional device so that the work can be carried out with the optional equipment such as a breaker. Fix like main pipe (4). At this time, the option pipe (5) is equipped with a plurality of option pipes to work by mounting a variety of option devices.

3 and 4, the radius of curvature of the option pipe 5 fixed on the boom 3 to supply the hydraulic fluid to the option device is minimized, so that the boom 3 is raised or lowered to the maximum height. Even if it can be prevented from interfering with the adjacent parts mounted on the upper swing body 2 adjacent to the lower end of the boom (3).

That is, the lower end of the option pipe 5 is connected to the main control valve (not shown) mounted on the upper swinging structure 2 so as to control the hydraulic oil supplied to the option device. At this time, the option pipe 5 is connected to the main control valve through a through hole 12 formed to connect the main pipe 4 to the boom cylinder 13.

On the other hand, the upper end of the option valve (5) connected to the option device passes through the option pipe fixing bracket (10) formed on the boom support frame (9) for supporting the boom (3) close to the upper surface behind the boom (3) Is fixed as possible. At this time, according to the specification or model name of the equipment option pipe (5) can be fixed to the top or bottom of the option pipe fixing bracket 10.

The above-mentioned option pipe 5 may be connected to a connector 11 or a block (not shown) in which the pipe on the main control valve side and the pipe on the option device side are fixed to the bracket for fixing the option pipe 10. .

As described above, the option piping 5 is fixed to the upper surface behind the boom 3, so the appearance is excellent. In addition, since the option pipe 5 descending from the option device toward the upper swing structure 2 along the boom 3 is assembled without passing through the upper swing structure 2, the assembly and maintenance of the option piping 5 are easy. Become.

As described above, the option pipe fixing device of the small swing excavator according to the embodiment of the present invention has the following advantages.

When the optional piping is fixed to the working device so that the working device can be replaced by the working device according to the working conditions, the radius of curvature of the option pipe is minimized when the boom is raised or lowered to the maximum height. It is possible to install and assemble several kinds of option piping in the narrow space of upper swing structure.

In addition, the arrangement of the option pipe to the rear of the boom neat the appearance of the equipment, the main pipe and the option pipe is fixed on the boom without passing through the upper frame can be assembled and maintainability to assemble them.

Claims (4)

In the option piping fixing device for a small swing excavator comprising a work device including a lower travel body, an upper swing body rotatably mounted on the lower travel body, and a boom fixed to the upper swing body: A boom support frame mounted to the upper pivot and fixed to the boom in a rotatable manner; And Including an option pipe fixing bracket is fixed to the boom support frame and the option pipe is fixed, When the boom is raised or lowered to the maximum height, the radius of curvature of the option pipe fixed to the option pipe fixing bracket is adjacent to the fixing pin of the boom is minimized option pipe fixing device of the excavator . The option pipe fixing device of claim 1, wherein the option pipe is connected to the option pipe fixing bracket by being connected by a separate block. The option pipe fixing apparatus of claim 1, wherein the option pipe is connected to the option pipe fixing bracket by being connected by a separate connector. The option pipe fixing apparatus of claim 1, wherein the option pipe is fixed to one of the top and bottom surfaces of the boom support frame.

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