High-voltage change-over switch

Abstract

The utility model provides a high-voltage change-over switch, which comprises a wiring terminal change-over tube body and a push rod base, the wiring terminal change-over tube body comprises an insulating tube and a wiring terminal support arranged in the insulating tube, the wiring terminal support is provided with two outgoing line wiring terminals and an incoming line wiring terminal, and the push rod base is arranged on the insulating tube. The two outgoing line wiring terminals are fixedly installed on the wiring terminal support in a spaced mode, and the incoming line wiring terminal is installed on the wiring terminal support in a sliding mode through a sliding rail. The push rod base comprises a supporting seat, an electric push rod and a U-shaped auxiliary arm, a travel switch is arranged on the outer side of the supporting seat, and the bent end of the front end of the U-shaped auxiliary arm is fixedly connected with the front end of a telescopic rod of the electric push rod. And one of two auxiliary connecting arms at the rear end of the U-shaped auxiliary arm is connected with an inlet wire wiring terminal in the insulating tube body, and the other auxiliary connecting arm is connected with a travel switch sliding contact block. The device has the advantages of stable performance, safety, reliability, simple structure, small size, simplicity and convenience in operation, and convenience in overhaul and maintenance.

Description

TECHNICAL FIELD

[0001] The utility model relates to power equipment technical field especially relates to a high voltage change-over switch. BACKGROUND

[0002] In a complex power system, there are multiple voltage levels and different circuit branches, and the circuit connection mode needs to be changed from time to time, the power supply is switched from one transmission line to another transmission line, or switched between different transformer windings to realize the conversion of voltage levels. For example, in the fault detection of power cables, it is necessary to switch to different cable loops one by one for testing to determine the location of the fault. The high voltage change-over switch is a key device for switching circuits and changing circuit connection modes. The existing high voltage change-over switch is relatively complex in structure and large in size. For the power equipment cabinet, the internal space is limited, and the large size of the high voltage switch parts makes the internal space of the cabinet crowded, which makes the wiring and cabling difficult and increases the risk of mutual interference between lines, making maintenance more difficult. In addition, the large size of the high voltage change-over switch is not flexible and convenient to operate, which may affect the rapid handling of faults in some emergency situations, reducing the reliability and safety of the power system. Therefore, it is necessary to provide a high voltage change-over switch to solve the above technical problems. SUMMARY

[0003] The utility model provides a kind of high voltage change-over switch, with the advantages of stable performance, safe and reliable, simple structure, small size, easy operation, easy maintenance.

[0004] The utility model adopts the following technical solutions:

[0005] A kind of high voltage change-over switch, characterized by: including wiring terminal conversion pipe body and push rod base, push rod base is located wiring terminal conversion pipe body outside;The wiring terminal conversion pipe body includes insulating pipe, wiring terminal support in the insulating pipe, wiring terminal support is equipped with two outgoing line wiring terminal and one incoming line wiring terminal, two outgoing line wiring terminal are fixedly installed on wiring terminal support with interval, incoming line wiring terminal is slidably installed on wiring terminal support using slide rail;The push rod base includes support seat, electric push rod and U-shaped auxiliary arm, electric push rod includes push rod motor and telescopic rod, support seat outside is equipped with travel switch, the front end of U-shaped auxiliary arm is bent connection end, rear end is divided into two auxiliary connecting arms, the front end of U-shaped auxiliary arm is fixedly connected with the telescopic rod front end of electric push rod, the two auxiliary connecting arms of U-shaped auxiliary arm rear end one is connected with incoming line wiring terminal in the insulating pipe body, and the other is connected with travel switch sliding contact block.

[0006] Further, the cable fixing fittings are provided on the wiring terminal support.

[0007] The utility model has the advantages of the following beneficial effects:

[0008] The utility model discloses an electric push rod is arranged at the outside of the conversion pipe body of the wiring terminal, drives the U-shaped auxiliary arm action through the electric push rod, and the U-shaped auxiliary arm drives the incoming line wiring terminal to slide along the slide rail and realizes the alternate connection with two outgoing line wiring terminals, thereby achieving the purpose of conversion circuit. The electric push rod is outside the insulating pipe, reduces the influence of the connection of the incoming line wiring terminal and the outgoing line wiring terminal on the electric driving part, improves the stability and safety of the equipment. The utility model adopts the tubular structure, and the volume is small and exquisite. The electric part adopts the external type, and the maintenance and maintenance are convenient. BRIEF DESCRIPTION OF DRAWINGS

[0009] Fig. 1 It is the three-dimensional structure schematic diagram of the utility model.

[0010] Fig. 2 It is the sectional structure schematic diagram of the utility model.

[0011] The corresponding component name in the drawing is: 1 insulating pipe;2 wiring terminal support;3 outgoing line wiring terminal;4 incoming line wiring terminal;5 slide rail;6 support seat;7 electric push rod;8 U-shaped auxiliary arm;9 travel switch;10 travel switch sliding contact block;11 cable fixing fittings;7-1 push rod motor;7-2 telescopic rod. DETAILED DESCRIPTION

[0012] In order to have more clear understanding of the technical features, purposes and effects of the utility model, the specific implementation mode, structure and features of the utility model are explained in detail as follows in combination with the drawings and preferred embodiments. However, the accompanying drawings are only provided for reference and illustration, and are not used to limit the utility model. EMBODIMENT

[0013] Please refer to Figs. 1-2The utility model discloses a high voltage switch, including wiring terminal conversion pipe body and push rod base, and push rod base is located wiring terminal conversion pipe body outside, wiring terminal conversion pipe body includes insulating pipe 1, wiring terminal support 2 in the inside of insulating pipe, is equipped with two outgoing line wiring terminal 3 and a incoming line wiring terminal 4 on wiring terminal support, two outgoing line wiring terminal 3 interval is apart fixed mounting on wiring terminal support 2, and incoming line wiring terminal 4 is slidably installed on wiring terminal support 2 using slide rail 5, push rod base includes support seat 6, electric push rod 7 and U-shaped auxiliary arm 8, and electric push rod includes push rod motor 7-1 and telescopic rod 7-2, and support seat outside is equipped with travel switch 9, and the front end of U-shaped auxiliary arm is bent connecting end, and the rear end is separated into two auxiliary connecting arms, and the front end of U-shaped auxiliary arm is fixedly connected with the telescopic rod front end of electric push rod, and the rear end of U-shaped auxiliary arm two auxiliary connecting arms are connected with incoming line wiring terminal in the inside of insulating pipe, and the other is connected with travel switch sliding contact block 10, and wiring terminal support is equipped with cable fixing fittings 11.

[0014] The working process of the utility model is as follows: when needing to convert the circuit, starting electric push rod 7, the telescopic rod of electric push rod 7 drives U-shaped auxiliary arm 8, and the two auxiliary connecting arms of U-shaped auxiliary arm 8 drive incoming line wiring terminal 4 and travel switch sliding contact block 10 to move, incoming line wiring terminal 4 changes position along with the telescopic action of push rod motor rod telescopic rod, and is connected with two outgoing line wiring terminals alternately, to reach the purpose of converting the circuit. Two travel switches play the role of limiting. Electric push rod is outside the insulating pipe, reduces the influence of incoming and outgoing line wiring terminal connection on electric drive component, improves the stability and safety of equipment, and electric component adopts external type, is convenient for overhauling and maintaining.

[0015] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the utility model. Various modifications to the above-described embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high voltage transfer switch characterized by: The utility model provides a kind of terminal conversion pipe body and push rod base including wiring terminal, push rod base is located wiring terminal conversion pipe body outside;The wiring terminal conversion pipe body includes insulating pipe, wiring terminal support in the insulating pipe, two outgoing line wiring terminals and a incoming line wiring terminal are equipped on wiring terminal support, two outgoing line wiring terminals are fixedly installed on wiring terminal support and are separated, incoming line wiring terminal is slidably installed on wiring terminal support using slide rail;The push rod base includes support seat, electric push rod and U-shaped auxiliary arm, electric push rod includes push rod motor and telescopic rod, support seat outside is equipped with travel switch, U-shaped auxiliary arm front end is bent connection end, rear end is separated into two auxiliary connecting arms, U-shaped auxiliary arm front end bent end is fixedly connected with the telescopic rod front end of electric push rod, the two auxiliary connecting arms of U-shaped auxiliary arm rear end one is connected with the incoming line wiring terminal in the insulating pipe body, and the other is connected with travel switch sliding contact block.

2. A high pressure transfer switch according to claim 1, characterized in that: Cable fixing fittings are provided on the wiring terminal support.

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