Ice breaking device for rail transit disconnecting switch

Abstract

The utility model relates to an icebreaking device for a rail transit isolating switch, the isolating switch comprises a base, an insulator column, a wire holder, a conducting bar, a moving contact and a static contact, the icebreaking device comprises a moving contact anti-icing cover arranged at the moving contact, and the moving contact anti-icing cover comprises an icing cover main body arranged at the end part of the conducting bar. The icing cover body is formed by jointly connecting three side plates and a top plate, the three side plates are distributed on the end face of the conducting bar in a [shape, and the top plate is located above the conducting bar; the static contact water guide ice crushing cover is arranged at the static contact, the static contact water guide ice crushing cover comprises an ice crushing cover main body arranged on the static contact wire holder, and the ice crushing cover main body is an arc-shaped panel. The moving contact anti-icing cover and the static contact water-guiding ice-breaking cover are matched to protect the moving contact and the static contact of the disconnecting switch, the moving contact anti-icing cover protects the moving contact so that the inner surface and the outer surface of the moving contact cannot be coated with ice, the static contact water-guiding ice-breaking cover guides rainwater to flow out, and the effect of deformation ice breaking is achieved during closing.

Description

Technical Field

[0001] The utility model relates to the field of disconnectors, in particular to an ice-breaking device for rail transit disconnectors. Background Art

[0002] The GW1 disconnector features a two-post vertical disconnect structure and can be equipped with an earthing switch. It is primarily used in rail transit overhead contact systems. The disconnector consists of a base, two post insulators, an operating insulator, an upper conductive section, and an operating mechanism. The post insulator is mounted on the base, and the upper conductive section is mounted above the post insulator. The upper mounting hole of the operating insulator connects to the conductive bar, while the lower mounting hole connects to the operating lever. The operating lever drives the operating lever, which in turn drives the operating insulator up and down, thereby opening and closing the disconnector.

[0003] The GW1 disconnector is a popular disconnector for rail transit overhead lines. Due to its unique vertical breaking structure, conventional ice-breaking devices cannot be installed. Consequently, in cold winters and freezing rain, without a dedicated ice-breaking mechanism, rainwater forms a thick layer of ice on the disconnector surface, often preventing effective closing and opening of the disconnector, leading to suspension of high-speed train and EMU operations.

[0004] It can be seen that it is very necessary to design the GW1 type disconnector to add an ice-breaking structure to ensure reliable closing and opening operations in freezing rain weather and improve the operational reliability of rail transit lines. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an ice-breaking device for a rail transit disconnector which can ensure reliable closing and opening operations in freezing rain weather.

[0006] In order to solve the above technical problems, the technical solution of the utility model is as follows: an ice-breaking device for a rail transit isolating switch, the isolating switch includes a base, an insulator column, a terminal block, a conductive bar, a moving contact and a static contact, an insulator column is installed on both sides of the upper end surface of the base, and the tops of the two insulator columns are respectively installed with a static contact terminal block and a moving contact terminal block, a static contact is connected to the static contact terminal block, and a conductive bar is hinged on the moving contact terminal block, and a moving contact matching the static contact is installed on the other side of the conductive bar. Its innovation lies in: the ice-breaking device includes

[0007] A moving contact anti-icing cover provided at the moving contact, the moving contact anti-icing cover comprising an ice cover body mounted on the end of the conductive bar, the ice cover body being connected by three side plates and a top plate, wherein the three side plates are arranged in a U-shape on the end surface of the conductive bar, the top plate is located above the conductive bar, and the side plates and the top plate cooperate to cover the moving contact;

[0008] A static contact water guide ice crushing cover is provided at the static contact, and the static contact water guide ice crushing cover comprises an ice crushing cover body installed on the static contact wiring seat, and the ice crushing cover body is an arc-shaped panel, and the arc-shaped opening of the arc-shaped panel faces downward.

[0009] Furthermore, the top plate is a rectangular plate formed by connecting a fixed plate body and a movable plate body, wherein one side of the fixed plate body has a notch, so that the fixed plate body forms a U-shaped plate, and the fixed plate body is fixedly connected to the three side plates, and the movable plate body is placed in the notch of the fixed plate body and is hinged to the fixed plate body.

[0010] Furthermore, one end portion of the conductive bar hinged to the wiring seat is an arc-shaped surface.

[0011] Furthermore, both sides of the ice crushing cover body are respectively connected to a downward extending fixed plate, and the fixed plate is an L-shaped plate formed by connecting a vertical plate and a horizontal plate. The vertical plate of the fixed plate is connected to the ice crushing cover body and is located next to the static contact terminal block. The horizontal plate of the fixed plate is located below the static contact terminal block and is fixed to the static contact terminal block.

[0012] The advantages of the utility model are that the moving and static contacts of the disconnector are protected by the cooperation of the moving contact anti-icing cover and the static contact water-conducting ice-breaking cover. The moving contact anti-icing cover protects the moving contact so that its inner and outer surfaces cannot be covered with ice. The static contact water-conducting ice-breaking cover guides rainwater to flow out and plays the role of deformation and ice breaking when closing the switch.

[0013] The design of the top plate adopts a combination of a fixed plate body and a hinged movable plate body. When the switch is in the open state, the movable plate body and the fixed plate body are in a closed state, which can protect the moving contact very well. The ice layer will only cover the surface of the moving contact anti-ice cover, protecting the moving contact and preventing ice from forming inside the moving contact. When the switch is in the closed state, the static contact will push open the movable plate body and break the ice layer on the surface of the moving contact anti-ice cover.

[0014] The end of the conductive bar is designed with an arc surface. During the opening process, the end of the conductive bar remains unchanged relative to the ice layer and does not interfere with the ice layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of an ice-breaking device for a rail transit disconnector according to the present invention.

[0016] Figure 2 This is a schematic diagram of the anti-icing cover for the moving contact in the present invention.

[0017] Figure 3 This is a schematic diagram of the water-conducting and ice-breaking cover of the static contact in the present utility model.

[0018] Figure 4 This is a schematic diagram of the cooperation between the conductive bar end and the moving contact terminal seat in the present utility model. DETAILED DESCRIPTION

[0019] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0020] like Figures 1-4 The shown embodiment shows an ice-breaking device for a rail transit disconnector, which includes a base 1, an insulator column 2, a terminal block, a conductive bar 5, a moving contact and a static contact 4. An insulator column 2 is installed on both sides of the upper end surface of the base 1, and a terminal block is installed on the top of each of the two insulator columns 2, which are respectively defined as a static contact terminal block 3 and a moving contact terminal block 6. The static contact 4 is connected to the static contact terminal block 3, and the conductive bar 5 is hinged on the moving contact terminal block 6. The moving contact that cooperates with the static contact 4 is installed on the other side of the conductive bar 5.

[0021] Ice breaking device includes

[0022] A moving contact anti-icing cover is provided at the moving contact. The moving contact anti-icing cover includes an ice cover body 7 installed at the end of the conductive bar 5. The ice cover body 7 is composed of three side panels 71 and a top panel connected together. The three side panels 71 are distributed in a U shape on the end surface of the conductive bar 5. The top panel is located above the conductive bar, and the side panels 71 and the top panel cooperate to cover the moving contact. The side panels 71 are rectangular panels, and the three side panels 71 are integrally formed by bending a rectangular panel.

[0023] The top plate is a rectangular plate formed by connecting a fixed plate body 72 and a movable plate body 73, wherein one side of the fixed plate body 72 has a notch, so that the fixed plate body 72 forms a U-shaped plate, and the fixed plate body 72 is fixedly connected to the three side plates 71, and the movable plate body 73 is placed in the notch of the fixed plate body 72 and is hinged to the fixed plate body 72, and the size of the movable plate body 73 is larger than the size of the notch of the fixed plate body 72. The design of the top plate adopts a combination of a fixed plate body 72 and a hinged movable plate body 73. When the switch is in the open state, the movable plate body 73 and the fixed plate body 72 are in a closed state, which can well protect the moving contact. The ice layer will only cover the surface of the moving contact anti-ice cover, protecting the moving contact so that no ice can accumulate inside the moving contact. When the switch is in the closed state, the static contact 4 will push open the movable plate body 73 to break the ice layer on the surface of the moving contact anti-ice cover, avoiding the surface of the moving contact anti-ice cover being covered with ice for a long time and affecting the subsequent smooth opening and closing.

[0024] A static contact water guide ice crushing cover 8 is arranged at the static contact 4, and the static contact water guide ice crushing cover 8 comprises an ice crushing cover body 81 mounted on the static contact terminal 3, the ice crushing cover body 81 is an arc-shaped panel, and the arc-shaped opening of the arc-shaped panel is downward.

[0025] The two sides of the ice crushing cover body 81 are respectively connected with a downward extending fixed plate, the fixed plate is an L-shaped plate formed by a vertical plate 82 and a horizontal plate 83, the vertical plate 82 of the fixed plate is connected with the ice crushing cover body 81 and located at the side of the static contact terminal 3, and the horizontal plate 83 of the fixed plate is located below the static contact terminal and fixed with the static contact terminal 3 by means of bolts or welding.

[0026] The side end of the conductive row 5 hinged with the movable contact terminal 6 is arc-shaped. The arc-shaped design of the end of the conductive row 5 keeps the edge of the conductive row 5 from changing the relative displacement during the opening process, that is, the end of the conductive row 5 does not change the relative displacement with the ice layer even if the upper end surface of the movable contact terminal 6 is covered with ice, and does not interfere with the ice layer during the opening and closing operation.

[0027] The disconnector of the utility model, when in the opening state, the movable plate body 73 and the fixed plate body 72 are in the closed state, can well protect the movable contact, the ice layer only covers the surface of the movable contact anti-icing cover, the movable contact is protected, the inside of the movable contact cannot be covered with ice, when in the closing state, the static contact 4 will push open the movable plate body 73, break the ice layer on the surface of the movable contact anti-icing cover, avoid the influence of the ice layer on the surface of the movable contact anti-icing cover on the subsequent smooth opening and closing, and the side plate 71 will hit the ice crushing cover body 81 when closing, so that the ice crushing cover body 81 deforms, thereby breaking the ice layer on the surface of the ice crushing cover body 81, and the ice breaking effect is achieved.

[0028] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form, although the utility model has been disclosed as above with the preferred embodiment, however, it is not used to limit the utility model, any person skilled in the art can make some changes or modifications to the equivalent embodiments with the disclosed technical content without departing from the technical scheme range of the utility model, as long as the changes, modifications, equivalent changes and modifications of the above embodiments do not depart from the technical scheme content of the utility model, and the technical essence of the utility model, and still belong to the range of the technical scheme of the utility model.

Claims

1. An ice-breaking device for a rail transit disconnector, the disconnector comprising a base, an insulator column, a terminal block, a conductive bar, a movable contact, and a static contact. An insulator column is mounted on each side of the upper end surface of the base. A static contact terminal block and a movable contact terminal block are mounted on the tops of the two insulator columns, respectively. A static contact is connected to the static contact terminal block, and a conductive bar is hingedly connected to the movable contact terminal block. A movable contact that cooperates with the static contact is mounted on the other side of the conductive bar. The device is characterized in that: Ice breaking device includes A moving contact anti-icing cover provided at the moving contact, the moving contact anti-icing cover comprising an ice cover body mounted on the end of the conductive bar, the ice cover body being connected by three side plates and a top plate, wherein the three side plates are arranged in a U-shape on the end surface of the conductive bar, the top plate is located above the conductive bar, and the side plates and the top plate cooperate to cover the moving contact; A static contact water guide ice crushing cover is provided at the static contact, and the static contact water guide ice crushing cover comprises an ice crushing cover body installed on the static contact wiring seat, and the ice crushing cover body is an arc-shaped panel, and the arc-shaped opening of the arc-shaped panel faces downward.

2. The ice-breaking device for rail transit disconnector according to claim 1, characterized in that: The top plate is a rectangular plate formed by connecting a fixed plate body and a movable plate body, wherein one side of the fixed plate body has a notch, so that the fixed plate body forms a U-shaped plate, and the fixed plate body is fixedly connected to the three side plates, and the movable plate body is placed in the notch of the fixed plate body and is hinged to the fixed plate body.

3. The ice-breaking device for rail transit disconnector according to claim 1, characterized in that: One end portion of the conductive bar hinged to the wiring seat is an arc-shaped surface.

4. The ice-breaking device for rail transit disconnector according to claim 1, characterized in that: A downward extending fixing plate is respectively connected to both sides of the ice crushing cover body. The fixing plate is an L-shaped plate formed by connecting a vertical plate and a horizontal plate. The vertical plate of the fixing plate is connected to the ice crushing cover body and is located beside the static contact terminal block. The horizontal plate of the fixing plate is located below the static contact terminal block and is fixed to the static contact terminal block.

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