Isolating switch pressing mechanism

Abstract

The utility model relates to an isolation switch hold-down mechanism, which comprises a knife switch arranged on a wire inlet knife head, a contact and a guide rod, the contact and the guide rod are fixed on a first wire outlet knife head and a second wire outlet knife head, the knife switch comprises connecting plates, an elastic connecting piece and a roller, the two connecting plates are connected through the elastic connecting piece, the roller is arranged at the end part of the connecting plate, and the contact and the guide rod are connected through the elastic connecting piece. The guide rod is an arc-shaped bent rod, and the middle of the guide rod is wider than the upper and lower ends of the guide rod; according to the hold-down mechanism, the distance between the two connecting plates of the knife switch is controlled by utilizing the contact between the roller and the guide rod, and the knife switch is separated from the contact in the closing process, so that the abrasion between the knife switch and the contact can be effectively reduced, and the closing is convenient.

Description

Technical Field

[0001] This utility model relates to the field of disconnecting switch technology, specifically a disconnecting switch clamping mechanism. Background Technology

[0002] High-voltage disconnect switches are important switching devices in the electrical systems of power plants and substations. Their main functions are to ensure the safety of high-voltage electrical equipment and devices during maintenance and to isolate voltage. Disconnect switches are divided into single-pole switches and double-pole switches. Double-pole switches are single-pole double-throw switches. Their function is to control the power output in two different directions. A single-pole double-throw switch consists of a moving end and a stationary end. The moving end has a contact blade and should be connected to the power supply line, that is, the end receiving power, and the end connected to the switch handle. The other two ends are the power output ends. The stationary end is connected to the electrical equipment. Its function is to control the power output in two different directions, which can be used to control two pieces of equipment, or to control the same piece of equipment to change its operating direction.

[0003] Currently, the closing of disconnect switches mostly relies on the friction between the switch blade and the contacts to clamp and close the circuit. This closing method has the drawbacks of difficulty in controlling the closing force. If too much force is applied, it is difficult to pull the switch down, while if too little force is applied, it is easy to trip and disconnect the power. If the closing fails, sparks may also be generated, posing certain safety hazards. Therefore, how to overcome the above-mentioned technical problems and defects has become a key issue that needs to be addressed. Summary of the Invention

[0004] The purpose of this utility model is to overcome the defects described in the background art, thereby realizing a disconnect switch clamping mechanism. This clamping mechanism uses the contact between the roller and the guide rod to control the distance between the two connecting plates of the switch knife. During the closing process, the switch knife is separated from the contact, which can effectively reduce the wear between the switch knife and the contact and facilitate closing.

[0005] To achieve the above-mentioned utility model objectives, the technical solution of this utility model is: a disconnecting switch clamping mechanism, including a switch blade disposed on the inlet cutter head and a contact and a guide rod fixed on the first outlet cutter head and the second outlet cutter head. The switch blade includes a connecting plate, an elastic connector and a roller. The two connecting plates are connected by the elastic connector, and the roller is installed at the end of the connecting plate. The guide rod is an arc-shaped bent rod, and the width of the middle part of the guide rod is greater than the width of the upper and lower ends of the guide rod.

[0006] Furthermore, the connecting plate is a U-shaped plate, and the lower parts of the two connecting plates are fixedly connected by bolts, with rollers fixed on the U-shaped groove plate at the upper end of the connecting plate.

[0007] Furthermore, the elastic connector includes a bolt and a spring, with the bolt connecting the upper parts of the two connecting plates together and the spring fitted onto the bolt on the outside of the connecting plate.

[0008] Furthermore, the two guide rods are symmetrically arranged, and the centers of the two arc-shaped guide rods coincide with the swing center of the switch.

[0009] Furthermore, the width of the guide rod is smaller than the width of the contact, and the contact is located on the inner side of the guide rod.

[0010] The beneficial effects of the disconnect switch clamping mechanism of this utility model are as follows:

[0011] The disconnector switch clamping mechanism of this utility model has a roller at the end of the connecting plate of the switch knife. The distance between the two connecting plates is controlled by the contact between the roller and the side of the guide rod, so that the switch knife and the contact are separated during the closing process. This avoids the sliding friction between the switch knife and the contact during closing, effectively reduces the difficulty of closing, avoids poor contact and sparks during closing, improves the safety of closing, and reduces the wear of the switch knife and the contact. At the same time, there will be no tripping after closing, with high stability, ensuring the continuity and safety of production. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the disconnect switch clamping mechanism of this utility model;

[0013] Figure 2 yes Figure 1 A magnified view of a portion of the image;

[0014] Figure 3 This is a structural diagram of the guide rod;

[0015] In the diagram: 1-base, 2-bracket, 3-insulating base, 4-inlet cutter head, 5-first outlet cutter head, 6-second outlet cutter head, 7-switch, 8-bolt, 9-spring, 10-roller, 11-guide rod, 12-contact, 13-connecting rod assembly, 14-drive shaft. Detailed Implementation

[0016] The disconnector switch clamping mechanism of this utility model will be described in more detail below with reference to the accompanying drawings and specific embodiments.

[0017] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] See Figure 1-3This embodiment provides a disconnect switch clamping mechanism. This clamping mechanism uses the contact between the roller and the guide rod to control the distance between the two connecting plates of the switch knife. During the closing process, the switch knife is separated from the contact, which can effectively reduce the wear between the switch knife and the contact and facilitate closing. It mainly includes a switch knife 7 set on the inlet switch head 4, a contact 12 fixed on the first outlet switch head 5 and the second outlet switch head 6, and an insulating guide rod 11. The inlet switch head 4, the first outlet switch head 5 and the second outlet switch head 6 are all fixed on the bracket 2 of the base 1 through the insulating base 3.

[0019] The switch 7 includes a connecting plate, an elastic connector, and a roller 10. The two connecting plates are connected by the elastic connector, which includes a bolt 8 and a spring 9. The bolt 8 connects the upper parts of the two connecting plates together, and the spring 9 is fitted onto the bolt 8 on the outside of the connecting plate. The lower end of the switch 7 is hinged to the inlet cutter head 4, and the middle part of the switch 7 is connected to the drive shaft 14 through a connecting rod assembly 13, which is used to control the swing closing of the switch 7.

[0020] The connecting plate is a U-shaped plate. The lower part of the two connecting plates is hinged to the inlet cutter head 4 by bolts. The roller 10 is fixed on the U-shaped groove plate at the upper end of the connecting plate. The guide rod 11 is an arc-shaped bent rod. The width of the middle part of the guide rod 11 is greater than the width of the upper and lower ends of the guide rod. The two guide rods 11 are symmetrically arranged, and the center of the two arc-shaped guide rods 11 coincides with the swing center of the gate 7. The width of the guide rod 11 is less than the width of the contact 12. The contact 12 is located on the inner side of the guide rod 11.

[0021] In the unclosed state, the switch is positioned between two insulating guide rods. The guide rods are narrow at both ends and wide in the middle, which facilitates smooth contact between the roller and the guide rod when the switch is closed, reducing the obstruction of the guide rod end face to the roller. As the switch swings, the roller moves along the guide rod to the middle, spreading the two connecting plates of the switch apart, preventing the switch from contacting the contacts during swing, reducing wear on the switch and contacts. The absence of sliding friction makes closing the switch simpler. When the roller moves to the end of the guide rod, the switch, under the action of the spring, makes tight contact with the contacts, greatly reducing the difficulty of closing the switch and preventing the switch from falling off, making it very stable.

[0022] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. Words such as “comprising” or “including” mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Words such as “connected” or “linked” are not limited to physical or mechanical connections, whether direct or indirect.

[0023] The exemplary embodiments of the present invention have been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of the present invention, and various combinations can be made to the various technical features and structures proposed by the present invention without exceeding the protection scope of the present invention.

Claims

1. A disconnector clamping mechanism, comprising a switch blade disposed on an inlet cutter head and contacts and a guide rod fixed to a first outlet cutter head and a second outlet cutter head, characterized in that: The guillotine includes a connecting plate, an elastic connector, and a roller. The two connecting plates are connected by the elastic connector, and the roller is installed at the end of the connecting plate. The guide rod is an arc-shaped bent rod, and the width of the middle part of the guide rod is greater than the width of the upper and lower ends of the guide rod.

2. The disconnector clamping mechanism according to claim 1, characterized in that: The connecting plate is a U-shaped plate, and the lower parts of the two connecting plates are hinged to the feed cutter head by bolts. The roller is fixed on the U-shaped groove plate at the upper end of the connecting plate.

3. The disconnector clamping mechanism according to claim 1, characterized in that: The elastic connector includes a bolt and a spring. The bolt connects the upper parts of the two connecting plates together, and the spring is fitted onto the bolt on the outside of the connecting plate.

4. The disconnector clamping mechanism according to claim 1, characterized in that: The two guide rods are symmetrically arranged, and the center of the two arc-shaped guide rods coincides with the swing center of the switch.

5. The disconnector clamping mechanism according to claim 1, characterized in that: The width of the guide rod is smaller than the width of the contact, and the contact is located on the inner side of the guide rod.

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