JP3128503B2 - High pressure air switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-pressure submersible switch having a self-supporting leg for ground mounting used in an overhead distribution line.

[0002]

2. Description of the Related Art In a high-pressure air switch, grounding of an outer box constituting its outer shell is important for security and must be reliably performed. When grounding is performed, for example, a grounding wire composed of a single wire having a diameter of 2.6 mm or a stranded wire having a cross-sectional area of 22 mm ² is used. In order to connect this ground wire to the high-pressure air switch, it is necessary to provide a ground terminal that can be reliably and easily connected to the outer case of the high-pressure air switch.

Heretofore, ground terminals have been individually designed as dedicated parts, and each has been attached to the outer case of the high-pressure air switch by welding. For this reason, welding work must be performed using a positioning jig and a welding jig, and the time required for this work, distortion removal after welding of the outer box after welding, correction of outer diameter dimensions, etc. The time required for the operation is increased, and the number of man-hours for manufacturing and mounting the conventional high-pressure air switch is increased.

In order to fix the end of the grounding wire to the grounding terminal, a hole slightly larger than the outer diameter of the grounding wire is fitted with a push screw in a direction perpendicular to the hole. The conventional ground terminal is a columnar member, and the upper surface is welded to the outer box. The mounting position of the grounding terminal on the outer case of the switch in the high-voltage unit is near the handle for performing the opening / closing operation.

[0005]

In the above-described ground terminal of the high-pressure air switch, it is effective to reduce the number of welded parts as much as possible at one point in order to prevent an increase in the number of working steps. Also leads to.

Further, the processing of the boss-shaped ground terminal itself is performed by
There is a problem in that a hole is formed in the side surface, that is, the curved surface of the cylinder, and it is difficult to perform a machining operation.

Further, when mounting the high-voltage air switch, the ground wire is attached to the handle because the ground terminal is located near the handle for performing the opening / closing operation. There was trouble in work such as catching.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an invention according to claim 1 is used for an overhead distribution line, and has a high-pressure air opening / closing device having a self-standing leg for ground mounting. In this case, one of the self-supporting legs is shared with a ground terminal.

According to a second aspect of the present invention, in the high pressure air switch according to the first aspect, the self-standing leg shared with the ground terminal has a flat processing surface.

According to a third aspect of the present invention, in the high pressure air switch according to the first or second aspect, the self-supporting leg shared with the ground terminal is provided at a lowermost portion of the high pressure air switch main body. It is characterized by being.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an external perspective view showing an embodiment of the present invention. A high-pressure submersible switch body 1 having a cubic box shape and a built-in opening / closing mechanism is provided with a rod-shaped handle 2 at one position on a side surface. It can be cut.

At three of the four corners of the lower surface of the high-pressure air switch body 1, self-standing legs 4 each formed by cutting a cylindrical round bar into a predetermined length are provided by welding. When the container 1 is placed on the floor, a stable posture can be maintained.
The remaining one stand-alone foot is shared with a grounding terminal 5 for grounding, and this grounding terminal 5 has a structure in which a square bar having a square cross section is subjected to drilling and welded. Has become.

FIG. 2 is an enlarged perspective view of the ground terminal. The ground terminal 5 has a structure in which the upper surface is welded to one corner of the lower surface of the high-pressure air switch body 1. Further, a ground wire mounting hole 6 for inserting an end of a ground wire 14 (FIG. 3), which will be described later, is provided on one side surface, and the center axis of the hole is formed on the other side surface. A screw hole 7 is provided so as to intersect at right angles and penetrate the holes. By screwing the fixing bolt 8 into the screw hole 7, the ground wire mounting hole 6 is formed.
The end of the ground wire 14 inserted into the wire is fixed so as to prevent the wire from coming off.

FIG. 3 is a view showing the high-pressure air switch in a mounted state. A power pole 11 erected on the ground 10 is provided with an arm bar 12 at an upper portion thereof so as to intersect the power pole 11 at a right angle. The arm bar 12 has a plurality of overhead distribution lines 13 and a high-voltage air switch body. 1 is suspended.

The other end of the ground wire 14 connected to the ground terminal 5 is connected to a ground electrode 15 buried in the ground 10 so that grounding can be performed.

In the high-pressure air switch according to the present embodiment, one of the legs 4 for self-supporting is used in common. However, other than this part, one that can be easily drilled may be used as a ground terminal. Further, in the present embodiment, the legs 4 for self-supporting other than the grounding terminal 5 are cylindrical round bars, but needless to say, similarly to the grounding terminal 5, square legs having a square cross section may be used.

[0017]

As described above, in the present invention, since the self-supporting leg and the grounding terminal are used in common, the number of welding parts is reduced by one, which contributes to cost reduction by reducing the number of welding operations.

Further, since the portion of the self-supporting leg that is shared with the grounding terminal is formed as a flat surface, the speed of the drilling process is improved, and the time required for the drilling is reduced, thereby contributing to cost reduction.

Further, since the grounding terminal is a self-supporting leg of the high-pressure air switch, a ground wire is attached to the lowermost portion of the high-pressure air switch main body, and a protrusion such as a handle is attached to the main body. The work of attaching the ground wire when mounting the high-pressure air switch can be performed smoothly, which has the effect of shortening the work time and preventing accidents.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a ground terminal.

FIG. 3 is a view showing a high-pressure air switch in a mounted state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 High-pressure air switch body 2 Handle 3 Arrow 4 Self-standing leg 5 Ground terminal 6 Ground wire mounting hole 7 Screw hole 8 Fixing bolt 10 Ground 11 Power pole 12 Arm bar 13 Overhead power distribution line 14 Ground wire 15 Ground pole

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01H 33/53 H02B 13/04 H01H 31/02 H01H 9/02

Claims (3)

(57) [Claims] 1. A high-pressure air switch for use in an overhead distribution line and having self-standing legs for ground mounting, wherein one of the self-standing legs is shared with a ground terminal. Air switch. 2. The high-pressure air switch according to claim 1, wherein the self-standing leg shared with the ground terminal has a flat processing surface. 3. The high-pressure air switch according to claim 1, wherein the self-supporting leg shared with the ground terminal is provided at a lowermost portion of the high-pressure air switch main body. High pressure air switch.