Isolation disconnecting link

Abstract

The utility model discloses an isolation disconnecting link which comprises a first conductive seat and a second conductive seat, a plug bush is arranged on the first conductive seat, a contact pin is arranged on the second conductive seat, the contact pin can slide in the plug bush of the second conductive seat, and a driving mechanism used for driving the contact pin to slide is further connected to the contact pin. And the driving mechanism acts to drive the contact pin to be inserted into the plug bush or separated from the plug bush. According to the technical scheme, the driving mechanism drives the contact pin to move and be inserted into the plug bush, so that connection of the first conductive seat and the second conductive seat is achieved, traditional rotating connection of the connecting blade is changed into moving connection, needed operation space is reduced, and the electric connector is suitable for being used in limited space.

Description

Technical Field

[0001] The utility model relates to the technical field of power isolation knives, in particular to an isolation knife switch. Background Art

[0002] In power systems, an isolating switch (also known as a disconnector) is a manually operated electrical device without an arc extinguishing device. It is primarily used to isolate circuits to ensure the safety of maintenance personnel or operators. Isolating switches are widely used in power systems of various voltage levels, such as power plants and substations. During maintenance or equipment replacement, operating an isolating switch ensures that the equipment being repaired is de-energized, thereby ensuring the safety of personnel.

[0003] The current isolation knife switch mainly includes two conductive seats and a connecting blade. One end of the connecting blade is hinged to one of the conductive seats. The two conductive seats are connected or disconnected by rotating the connecting blade. However, the current isolation knife switch requires a large operating radius when in use. For some compact box-type transformers with limited space in the low-voltage side cabinet, this type of isolation knife switch cannot be used. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the isolation knife switch in the box with limited space cannot be used, and to provide an isolation knife switch.

[0005] In order to achieve the above-mentioned purpose, the solution adopted by the utility model is: an isolating knife switch, including a first conductive seat and a second conductive seat, a socket is provided on the first conductive seat, and a pin is provided on the second conductive seat. The pin can slide on the second conductive seat, and a driving mechanism for driving the pin to slide is also connected to the pin. The operation of the driving mechanism can drive the pin to insert into or detach from the socket.

[0006] Through the above technical solution, the driving mechanism drives the pin to move and insert into the socket, thereby realizing the connection between the first conductive seat and the second conductive seat, and changing the traditional rotating connection of the connecting blade into a mobile connection, thereby reducing the required operating space and being suitable for use in confined spaces.

[0007] As a preferred embodiment of the present invention, a guide block is provided inside the second conductive seat, and a sliding groove distributed along the axial direction is provided on the outer wall of the pin, and the guide block is provided in the sliding groove.

[0008] According to the above technical solution, by providing the slide groove and the guide block, the pin can move along the direction of the guide block through the slide groove.

[0009] As a preferred embodiment of the present invention, the driving mechanism includes a screw rod, a nut seat, a transmission shaft and a handwheel. The nut seat is arranged in the pin, the screw rod is cooperatively connected to the nut seat, and the handwheel is connected to the screw rod through the transmission shaft. The rotation of the handwheel drives the screw rod to rotate.

[0010] Through the above technical solution, the driving mechanism adopts the screw nut method for transmission, and the screw is driven to rotate by rotating the handwheel, thereby driving the nut seat and the pin to move, thereby realizing the linear movement of the pin.

[0011] As a preferred embodiment of the present invention, a clamping block is further provided on the outer wall of the nut seat, and a clamping groove matching the clamping block is provided on the inner wall of the pin. The clamping block is provided in the clamping groove to limit the rotation between the nut seat and the pin.

[0012] Through the above technical solution, the groove provided on the pin cooperates with the block on the nut seat to limit the rotation of the nut seat, so that the rotation of the screw rod can be converted into the movement of the nut seat.

[0013] As a preferred embodiment of the present invention, the nut seat is arranged at an end of the pin away from the first conductive seat, and an axial limiting mechanism for limiting the axial movement of the nut seat is also provided in the pin.

[0014] Through the above technical solution, the nut seat can be inserted into the interior of the pin from one end of the pin and limited by the axial limiting mechanism, so that the nut seat drives the pin to move synchronously when moving.

[0015] As a preferred embodiment of the present invention, a flange bearing seat is further included, the transmission shaft is cooperatively connected to the flange bearing seat, one end of the transmission shaft is connected to the screw rod, and the other end is connected to the handwheel.

[0016] Through the above technical solution, the flange bearing seat is fixed to the insulating shell, which facilitates subsequent operation and use.

[0017] As a preferred embodiment of the present invention, a mounting groove is provided on the inner wall of the sleeve, and a contact spring is provided in the mounting groove.

[0018] With the above technical solution, by providing a mounting groove on the inner wall of the socket and providing a contact spring in the mounting groove, when the pin is inserted into the socket, it can always be ensured that the pin and the socket remain connected.

[0019] As a preferred embodiment of the present invention, a mounting groove is provided on the inner wall of the second conductive seat, and a contact spring is provided in the mounting groove.

[0020] According to the above technical solution, by arranging a mounting groove on the inner wall of the second conductive seat and arranging a contact spring in the mounting groove, it can be ensured that the pin is always connected to the second conductive seat.

[0021] In summary, the present invention has at least one of the following beneficial technical effects:

[0022] 1. This utility model changes the traditional rotating connection of the connecting blade into a movable connection of the pin, which significantly reduces the space required for operation. It provides a more practical choice for occasions with limited space, such as compact box-type low-voltage side cabinets, making operation more convenient while ensuring the safety and reliability of the equipment in a small space.

[0023] 2. This utility provides mounting grooves on the inner walls of the pin and socket, and contains contact springs. Whether inserting or removing the pin, the contact springs ensure good electrical contact between the pin, socket, and second conductive base. This not only enhances electrical conductivity but also reduces safety hazards caused by poor contact.

[0024] 3. By setting a slide groove on the pin and matching it with the guide block inside the second conductive seat, the straightness of the pin during the sliding process is ensured, avoiding electrical connection failures caused by pin deviation, and further improving the service life and safety of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the isolation knife switch of the utility model.

[0026] Figure 2 It is a cross-sectional view of the isolation knife switch of the utility model.

[0027] Figure 3 It is an exploded view of the utility model isolation knife switch.

[0028] Explanation of the reference numerals: 1-first conductive seat; 2-second conductive seat; 3-pin; 4-screw; 5-flange bearing seat; 6-handwheel; 7-transmission shaft; 8-slide; 9-wiring portion; 10-fixing screw hole; 11-wire connecting portion; 12-nut seat; 13-contact spring; 14-slot; 15-block; 16-mounting slot; 17-guide block. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-3 The utility model is described in further detail.

[0030] Reference Figures 1 to 3This embodiment discloses an isolating knife switch, comprising a first conductive base 1 and a second conductive base 2, both of which are made of conductive materials. A socket is disposed on the first conductive base 1, and a connection portion 9 is also disposed at one end of the first conductive base 1. A mounting groove 16 is disposed on the inner wall of the socket, and an annular contact spring 13 is disposed within the mounting groove 16. In this embodiment, two annular mounting grooves 16 are disposed on the inner wall of the socket, each of which contains a contact spring 13.

[0031] The second conductive portion 2 is a three-way structure, with a pin 3 positioned within the left end of the tee. In this embodiment, the pin 3 is a hollow cylindrical conductor. A slot 8 is provided on the outer wall of the pin 3, extending along its axial direction. A guide block 17 is positioned within the left end of the tee. In this embodiment, a fixing screw hole 10 is provided at the left end of the second conductive portion 2. The guide block 17 is secured to the inner wall of the second conductive portion 2 by inserting a screw through the fixing screw hole 10. The guide block 17 is positioned within the slot 8, allowing the pin 3 to slide within the second conductive base 2. To ensure good contact between the pin 3 and the second conductive base 2 and ensure good electrical stability, two annular mounting grooves 16 are provided within the inner wall of the second conductive portion 2, specifically the inner wall of the left end of the tee. Each mounting groove 16 contains a contact spring 13.

[0032] The lower end of the second conductive part 2 is provided with a wire connection part 11 for connecting a conductor. The right end of the second conductive part 2 is provided with a driving mechanism for driving the pin 3 to slide. The driving mechanism can drive the pin 3 to insert into or remove from the socket.

[0033] In this embodiment, the driving mechanism includes a screw rod 4 , a nut seat 12 , a transmission shaft 7 , a flange bearing seat 5 and a handwheel 6 .

[0034] A nut seat 12 is disposed within the pin 3. Specifically, the nut seat 12 is disposed at the end of the pin 3 away from the first conductive seat 1. An axial limit mechanism is also disposed within the pin 3 to restrict axial movement of the nut seat 12. A clamping block 15 is also disposed on the outer wall of the nut seat 12. A slot 14 is disposed on the inner wall of the pin 3 to engage with the clamping block 15. The clamping block 15 is disposed within the slot 14 to restrict rotation between the nut seat 12 and the pin 3.

[0035] The screw rod 4 is coupled to the nut seat 12, and the handwheel 6 is coupled to the screw rod 4 via a transmission shaft 7. Rotation of the handwheel 6 drives the screw rod 4. The transmission shaft 7 is coupled to the flange bearing seat 5. In this embodiment, the flange bearing seat 5 is fixed to the insulating box. The flange bearing seat 5 includes two bearings. One end of the transmission shaft 7 is coupled to the screw rod 4, and the other end is coupled to the handwheel 6. The handwheel 6 is disposed outside the insulating box.

[0036] The working principle of the isolation knife switch provided in this embodiment is as follows:

[0037] When it is necessary to connect the first conductive seat 1 and the second conductive seat 2, the hand wheel 6 is rotated clockwise, and the screw rod 4 is driven to rotate clockwise through the transmission shaft 7. The screw rod 4 rotates clockwise, driving the nut seat 12 and the pin 3 to move along the guide block 17 toward the first conductive seat 1. As the screw rod 4 rotates, the pin 3 is gradually inserted into the plug, thereby completing the connection between the first conductive seat 1 and the second conductive seat 2.

[0038] When it is necessary to disconnect the electrical connection between the first conductive seat 1 and the second conductive seat 2, the hand wheel 6 is rotated counterclockwise, and the screw rod 4 is driven to rotate counterclockwise through the transmission shaft 7. The screw rod 4 rotates counterclockwise, driving the nut seat 12 and the pin 3 to move along the guide block 17 away from the first conductive seat 1. As the screw rod 4 rotates, the pin 3 gradually disengages from the socket of the first conductive seat 1, thereby disconnecting the electrical connection between the first conductive seat 1 and the second conductive seat 2.

[0039] The embodiments of this specific implementation method are all preferred embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the scope of protection of the present utility model.

Claims

1. An isolation switch, characterized by: The invention comprises a first conductive seat (1) and a second conductive seat (2), wherein a socket is provided on the first conductive seat (1), and a pin (3) is provided on the second conductive seat (2); the pin (3) can slide on the second conductive seat (2), and a driving mechanism for driving the pin (3) to slide is also connected to the pin (3); the driving mechanism can drive the pin (3) to insert into or detach from the socket.

2. The isolation switch according to claim 1, characterized in that: A guide block (17) is provided inside the second conductive seat (2), and a slide groove (8) distributed along the axial direction is provided on the outer wall of the plug pin (3), and the guide block (17) is provided in the slide groove (8).

3. The isolation knife switch according to claim 2, characterized in that: The driving mechanism comprises a screw rod (4), a nut seat (12), a transmission shaft (7) and a hand wheel (6); the nut seat (12) is arranged in the pin (3); the screw rod (4) is connected to the nut seat (12); the hand wheel (6) is connected to the screw rod (4) through the transmission shaft (7); the rotation of the hand wheel (6) drives the screw rod (4) to rotate.

4. The isolation switch according to claim 3, characterized in that: A clamping block (15) is also provided on the outer wall of the nut seat (12), and a clamping groove (14) matching the clamping block (15) is provided on the inner wall of the insertion pin (3). The clamping block (15) is provided in the clamping groove (14) to limit the rotation between the nut seat (12) and the insertion pin (3).

5. The isolation knife switch according to claim 4, characterized in that: The nut seat (12) is arranged at an end of the insertion pin (3) away from the first conductive seat (1), and an axial limiting mechanism for limiting the axial movement of the nut seat (12) is also arranged in the insertion pin (3).

6. The isolation knife switch according to claim 3, characterized in that: It also includes a flange bearing seat (5), the transmission shaft (7) is cooperatively connected to the flange bearing seat (5), one end of the transmission shaft (7) is connected to the screw rod (4), and the other end is connected to the hand wheel (6).

7. The isolation knife switch according to claim 1, characterized in that: A mounting groove (16) is provided on the inner wall of the insert sleeve, and a contact spring (13) is provided in the mounting groove (16).

8. The isolation switch according to claim 1, characterized in that: An installation groove (16) is provided on the inner wall of the second conductive seat (2), and a contact spring (13) is provided in the installation groove (16).

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