JPH0743109Y2 - Lifting device for switching switch - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a hoisting device used for suspending and retracting a switching switch from a switching switch chamber when inspecting a tap switching switch under load. .

[Conventional technology]

FIG. 2 is a view showing a conventional lifting device for a switching switch disclosed in, for example, Japanese Utility Model Publication No. 58-4179, in which (1) is a transformer tank, (2) is a fixed column seat, (3) is a fixed support, (4) is a rotating support, (5) is an arm, (6)
Is a winding device, and (7) is a switching switch.

Next, the operation will be described. In FIG. 2, the fixed support column (3) is attached to the support column fixing seat (2) provided on the upper part of the transformer tank (1), and the rotating support column (4), the arm (5), and the hoisting device (6) are further attached. Install. Then, the switching switch (7) is lifted by the hoisting device (6) in this state. Then, as indicated by the broken line, the rotating column (4) is rotated and lowered to a place on the ground where it will be an inspection work station.

[Problems to be solved by the invention]

Since the conventional switching switch hoisting device is configured as described above, it is necessary to change the arm length depending on the shape of the transformer tank, the mounting position of the tap switching device, etc. Each time, it was necessary to investigate the shape of the transformer tank and the mounting position of the tap changer.

This invention has been made to solve the above problems, and can be applied to all transformers so that it is not necessary to investigate the shape of the transformer tank, the mounting position of the tap changer, etc. before inspection. The purpose is to obtain a lifting device for a switching switch.

[Means for solving problems]

A hoisting device for a switching switch according to the present invention is configured such that a rotation column provided rotatably with respect to a tank accommodating the switching switch, an arm fixed to the rotation column, and an arm. A movable body that is movable in the horizontal direction,
Fixing means for fixing the moving body at a plurality of positions in the horizontal direction, and a hoisting device for hoisting the switching switch locked by the moving body are provided, and the arm is provided in the length direction thereof. The fixing means is composed of a plurality of set holes and a U-shaped set metal fitting.

[Action]

The hoisting device according to the present invention moves the moving body, to which the hoisting device is locked, to an arbitrary position of the arm according to the object to be hoisted, and inserts both ends of the set fitting into the set holes on both sides of the moving body. After inserting, the moving body is sandwiched by the set metal fittings to fix the moving body, and lifting and hanging are performed at that position.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. First
In the figure, (1) is a transformer tank, (2) is a fixed pillar support seat attached to the transformer tank (1), and (3) is a fixed support pillar, which is attached to a fixed pillar buckle (2). Reference numeral (4) is a rotating support, which is connected to the fixed support (3). Reference numeral (8) is an arm attached to the rotating column (4), and a pulley (9) is incorporated as a movable body which can freely move in a horizontal direction on the arm (8). Further, in order to carry out the lifting work safely and surely, a fixing means (10) for fixing the pulley (9) during the lifting work at a plurality of positions in the horizontal direction is provided, and the fixing means (10) is provided. It is composed of set holes (10a) and set fittings (10b) provided at equal intervals. The set metal fitting (10b) is a U-shaped rod member, and is inserted over two adjacent set holes (10a) (10a) of the arm (8) and fixed by sandwiching the pulley (9).
Also, the arm (8) can be rotated by the rotation column (4) in any direction and at any angle in the range of 360 °.

Next, the operation will be described. At the time of inspection, assemble the lifting device as shown in Fig. 1. In order to fix the hoisting device (6) before hoisting the switching switch (7), the set fitting (10b) is inserted into the set hole (10) provided in the arm (8).
Then, in order to hoist and avoid obstacles on the upper part of the transformer tank (1), the set metal fitting (10b) is removed, and the hoisting device (6) is attached to the arm (8) by the pulley (9) at any position. To the work area, rotate the rotating column (4) to lower it to the work area, avoid obstacles around the transformer tank (1), and switch to the ground work area (7).
Can be lowered.

The moving body (9) is not limited to the pulley.

[Effect of device]

As described above, according to the present invention, since the hoisting device is provided with the movable body and the fixing means on the arm so that the hoisting device can be arbitrarily moved and fixed on the arm, it can be applied to all transformers. Since it is no longer necessary to investigate the shape of the transformer and the mounting position of the tap changer, there is a great effect in reducing the preparation time for inspection and shortening the time for lifting and hanging the changeover switch.

[Brief description of drawings]

FIG. 1 is a block diagram showing a hoisting device according to an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional hoisting device. In the figure, (1) is a tank, (4) is a rotating column,
(6) is a hoisting device, (7) is a switching switch, (8) is an arm, (9) is a moving body (pulley), and (10) is a fixing means. The same reference numerals in the drawings indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] Claims: 1. A rotary column, which is rotatably provided to a tank containing a switching switch, an arm fixed to the rotary column, and horizontally movable with respect to the arm. And a moving body, a fixing means for fixing the moving body at a plurality of horizontal positions, and a hoisting device for hoisting the switching switch, which is locked to the moving body. In the device, the fixing means includes a plurality of set holes provided in the arm in the length direction thereof and a U-shaped set metal fitting, and the movable body is moved to an arbitrary position of the arm. Both ends of the set metal fittings are inserted into the set holes on both sides of the moving body, and the moving body is clamped by the set metal fittings to fix the moving body. .