A circuit breaker vacuum interrupter assembly tool

Abstract

The utility model belongs to electrical equipment - low voltage switch technical field discloses a kind of circuit breaker vacuum arc-extinguishing chamber assembly tool, including bottom plate, positioning support, soft connection clamping component and arc-extinguishing chamber clamping component;Positioning support is fixed on bottom plate, soft connection clamping component is set in the top of positioning support liftablely, including the positioning plate for fixed soft connection and the positioning rod of supporting positioning plate lifting, arc-extinguishing chamber clamping component is set in the middle part of positioning support, including the clamping rod for clamping arc-extinguishing chamber with open adjustable and the tension spring for providing the clamping force of clamping rod.The tool adopts simple structure, and the material of reliable strength is positioned to vacuum arc-extinguishing chamber and soft connection, and optimization assembly process improves assembly speed, precision and guarantees the assembly height requirement of arc-extinguishing chamber, guarantees the conductivity of vacuum arc-extinguishing chamber, solves the problem of complicated step, inconvenient positioning in the installation process of vacuum circuit breaker arc-extinguishing chamber in current technology, greatly improves assembly efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of electrical equipment - medium and low voltage switch technology, and mainly relates to an assembly tooling for a circuit breaker vacuum interrupter chamber. Background Technology

[0002] Vacuum circuit breakers are mainstream products in the field of high-voltage switchgear for power distribution systems. The arc-extinguishing chamber is one of the core components of a vacuum circuit breaker. The installation of the arc-extinguishing chamber along with the upper and lower supports is a crucial step in the assembly process of a vacuum circuit breaker. The proper installation of the arc-extinguishing chamber directly affects the overall performance stability of the circuit breaker. After installation, the arc-extinguishing chamber must meet the requirements that the lower support can move vertically in a plane parallel to the plane of the upper support, and that the flexible connection is not affected by external torsional forces during the vertical movement of the lower support.

[0003] The traditional installation method does not use installation clamps. The upper bracket is assembled with the arc-extinguishing chamber, the lower bracket is inserted into the upper part of the arc-extinguishing chamber, and the conductive clamp is fastened to the end of the arc-extinguishing chamber. Then, the flexible connection is fastened to the lower bracket by the installer's vision and experience.

[0004] Traditional installation methods do not use installation clamps. The upper bracket is assembled with the arc-extinguishing chamber, the lower bracket is inserted into the upper part of the arc-extinguishing chamber, and the conductive clamp is fastened to the end of the arc-extinguishing chamber. Then, the flexible connection is tightened to the lower bracket by the installer's vision and experience. Because the arc-extinguishing chamber and the upper and lower brackets are not positioned with clamps during installation, this installation method makes it difficult to ensure the parallelism of the plane on which the upper and lower brackets are located after the arc-extinguishing chamber is installed, and the free movement of the lower bracket under the influence of external torsional forces on the flexible connection. As a result, the overall performance stability of the circuit breaker is not high.

[0005] Therefore, there is an urgent need for a tooling for assembling the vacuum interrupter of a circuit breaker to solve the problems of cumbersome steps and inconvenient positioning in traditional installation methods. Utility Model Content

[0006] To address the problems in the prior art, this utility model provides an assembly fixture for a circuit breaker vacuum interrupter. This fixture uses simple, high-strength materials to position the vacuum interrupter and flexible connections, optimizing the assembly process, improving assembly speed and accuracy, ensuring the required assembly height of the interrupter, and guaranteeing the conductivity of the vacuum interrupter. This solves the problems of cumbersome steps and inconvenient positioning in the current technology for installing vacuum circuit breaker interrupters, greatly improving assembly efficiency.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0008] A circuit breaker vacuum interrupter assembly fixture includes a base plate, a positioning bracket, a flexible connection clamping assembly, and an interrupter clamping assembly. The positioning bracket is fixed to the base plate. The flexible connection clamping assembly is vertically and flexibly mounted on the top of the positioning bracket and includes a positioning plate for fixing the flexible connection and a positioning rod for supporting the lifting of the positioning plate. The interrupter clamping assembly is located in the middle of the positioning bracket and includes a clamping rod with an adjustable opening for clamping the interrupter and a tension spring for providing clamping force to the clamping rod.

[0009] Furthermore, the positioning plate includes a fixed plate and a claw, the claw being fixed with a flexible connection, the fixed plate being provided with a positioning hole, a bearing being provided on the lower side of the positioning hole, and the positioning rod passing through the positioning hole and the bearing being movably connected to the positioning bracket.

[0010] Furthermore, the bottom of the positioning rod is provided with external threads, which are threaded to the positioning bracket, and the top is provided with a hexagonal spur head.

[0011] Furthermore, the positioning bracket is vertically fixed to one side of the base plate, with a U-shaped cross-section. The bottom of the positioning bracket is provided with a bracket base for connecting with the base plate, and the top of the positioning bracket is provided with a bracket top plate for connecting with the positioning rod.

[0012] Furthermore, the arc-extinguishing chamber clamping assembly also includes a clamping rod mounting base, which is U-shaped and fixedly connected to the positioning bracket. The clamping rod is disposed on both sides of the clamping rod mounting base, and a tension spring is disposed between the clamping rod and the clamping rod mounting base.

[0013] Furthermore, the side wall of the clamp rod mounting base is provided with a support lug, and the clamp rod is provided with a corresponding clamp rod lug, and the two are connected by a fixing pin.

[0014] Furthermore, the clamp rod mounting base has symmetrically arranged clamp rod supports extending outwards at the U-shaped opening.

[0015] Furthermore, a soft pad is provided at the top of the clamping rod.

[0016] Furthermore, the surface of the base plate is provided with positioning grooves.

[0017] Furthermore, retaining rods are symmetrically arranged on both sides of the positioning bracket. The upper end of the retaining rod is connected to the fixing plate, and the lower end is provided with a reinforcing block. The reinforcing block fills the gap between the retaining rod and the side wall of the positioning bracket.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This utility model provides a tooling for assembling a circuit breaker vacuum interrupter. The tooling uses a simple connection method and reliable materials, optimizing the assembly process while ensuring the overall safety and convenience of the tooling. It positions and limits the flexible connection and the interrupter to prevent relative movement of components during assembly, achieving high positioning accuracy and meeting the assembly requirements of the interrupter. The positioning plate for controlling the assembly height is movable, suitable for different schemes and models of interrupters. It can be quickly adjusted with an electric gun or precisely adjusted with an open wrench, facilitating operation. The simple and easy-to-maintain clamping device prevents the interrupter from shaking during assembly, ensuring greater stability and meeting high precision requirements. Attached Figure Description

[0020] Fig. 1 This is a schematic diagram of the assembly tooling for the arc-extinguishing chamber of this utility model.

[0021] Fig. 2 This is a schematic diagram showing the usage state of the arc-extinguishing chamber assembly tooling of this utility model.

[0022] Fig. 3 This is a schematic diagram of the positioning bracket of this utility model.

[0023] Fig. 4 This is a schematic diagram of the positioning plate of this utility model.

[0024] Fig. 5 This is a schematic diagram of the clamp rod mounting base of this utility model.

[0025] Fig. 6 This is a schematic diagram of the clamping rod of this utility model.

[0026] Fig. 7 This is a rear view of the assembly fixture for the arc-extinguishing chamber of this utility model.

[0027] in:

[0028] 1. Base plate; 2. Positioning bracket; 2-1. Bracket base; 2-2. Bracket top plate; 3. Positioning plate; 3-1. Fixing plate; 3-2. Claw; 4. Positioning rod; 5. Holding rod; 6. Clamp rod mounting seat; 6-1. Support lug; 6-2. Clamp rod support; 7. Clamp rod; 7-1. Clamp rod lug; 7-2. Soft pad; 8. Tension spring; 9. Fixing pin; 10. Arc extinguishing chamber; 11. Flexible connection; 12. Insulating pull rod. Detailed Implementation

[0029] The specific embodiments of this utility model will be further explained below with reference to the accompanying drawings.

[0030] like Figs. 1-7As shown, a circuit breaker vacuum interrupter assembly fixture includes a base plate 1 and a positioning bracket 2 disposed on the base plate 1. The positioning bracket 2 is provided with a flexible connection clamping assembly and an interrupter clamping assembly.

[0031] The surface of the base plate 1 is provided with a positioning groove for positioning and limiting the arc-extinguishing chamber, ensuring the relative position and installation accuracy; the positioning bracket 2 is vertically fixed on one side of the base plate 1, and its cross-section is U-shaped, with the opening of the U-shape facing the positioning groove of the base plate 1. The bottom of the positioning bracket 2 is provided with a bracket base 2-1, and the positioning bracket 2 is fixed to the base plate 1 by screws. The top of the positioning bracket 2 is provided with a bracket top plate 2-2, and the bracket top plate 2-2 is provided with a threaded hole for connecting with the flexible connection clamping assembly.

[0032] The flexible connection clamping assembly is adjustablely disposed on the upper side of the positioning bracket 2, and includes a positioning plate 3 and a positioning rod 4. The positioning plate 3 and the positioning rod 4 are movably connected, and the positioning rod 4 is rotatably disposed on the top of the positioning bracket 2.

[0033] Specifically, the positioning plate 3 includes a fixing plate 3-1 and a claw 3-2. The fixing plate 3-1 is provided with a fixing plate positioning hole for connecting and fixing with the positioning rod 4. The opening of the claw 3-2 corresponds to the direction of the positioning groove of the base plate 1 and is used to fix the flexible connection 11. A bearing is provided on the lower side of the fixing plate positioning hole.

[0034] The positioning rod 4 has a hexagonal stern head at the top and an external thread at the bottom. The positioning rod 4 passes through the positioning hole of the fixing plate and is threaded to the top plate 2-2 of the bracket. The positioning rod 4 is screwed in and out of the positioning bracket 2 to control the height of the positioning plate 3. Washers and retaining rings are set between the hexagonal stern head and the positioning plate 3. The positioning rod 4 and the positioning plate 3 are fixed by a combination of bearings, washers, and retaining rings. The purpose of setting bearings is to allow the positioning plate 3 and the positioning rod 4 to maintain a direct connection while allowing relative rotation. Compared with the threaded connection, its rotation angle is more free and flexible. The purpose is to ensure that the opening angle of the pawl 3-2 remains unchanged when the two move relative to each other. The hexagonal stern head is convenient for quickly adjusting the height of the positioning plate with an electric gun or finely adjusting the height of the positioning plate with an open-end wrench.

[0035] To better maintain the opening direction of the claw 3-2, retaining rods 5 are symmetrically arranged on both sides of the positioning bracket 2. The upper end of the retaining rod 5 is fixedly connected to the fixing plate 3-1, and the lower end of the retaining rod 5 is provided with a reinforcing block. The reinforcing block is used to fill the gap between the retaining rod 5 and the side wall of the positioning bracket 2, ensuring that the retaining rod 5 can always abut against the side wall of the positioning bracket 2 during the adjustment of the positioning rod 4. The retaining rods 5 on both sides maintain the opening angle of the claw 3-2 of the positioning plate 3 unchanged, so that the soft connection clamping assembly can only move up and down in the vertical direction. If it is necessary to adjust the opening angle of the claw 3-2, the retaining rods 5 on both sides can be removed, so that the positioning plate 3 can rotate left and right to change the angle.

[0036] The arc-extinguishing chamber clamping assembly is located in the middle section of the positioning bracket 2, and includes a clamping rod mounting base 6, a clamping rod 7, and a tension spring 8. The clamping rod mounting base 6 is fixedly connected to the positioning bracket 2, the clamping rod 7 is located on both sides of the clamping rod mounting base 6, and the tension spring 8 is located between the clamping rod 7 and the clamping rod mounting base 6 to provide tension when the clamping rod 7 clamps the arc-extinguishing chamber, so as to maintain the clamping state.

[0037] Specifically, the clamp rod mounting base 6 is also U-shaped and is located on the outer side of the middle section of the positioning bracket 2, adapting to the U-shape of the positioning bracket 2. The side wall of the clamp rod mounting base 6 is provided with a support lug 6-1, and the rear end of the corresponding clamp rod 7 is provided with a clamp rod lug 7-1. The two are movably connected by a fixing pin 9. The U-shaped opening of the clamp rod mounting base 6 is symmetrically provided with clamp rod supports 6-2 extending outward, serving as the minimum limit for the clamping opening of the two clamp rods 7. The tension spring 8 is located on the rear side of the clamp rod support 6-2, with one end fixed to the side wall of the clamp rod mounting base 6 and the other end fixed to the clamp rod 7, providing tension for the clamp rod 7. The top end of the clamp rod 7 is provided with a soft pad 7-2, which can be made of rubber, to ensure that the arc-extinguishing chamber is not damaged during clamping.

[0038] The arc-extinguishing chamber clamping assembly can be manually pressed at the rear end of the clamping rod 7 to adjust the opening size of the clamping rod 7 to match the size of the arc-extinguishing chamber for different models of vacuum arc-extinguishing chambers.

[0039] The assembly process of the circuit breaker vacuum interrupter assembly fixture described in this embodiment is as follows:

[0040] First, place the static conductive end of the arc-extinguishing chamber 10 on the groove of the base plate 1. Manually press the rear end of the clamping rod 7 to adjust the opening of the clamping rod 7 so that it clamps the arc-extinguishing chamber 10. Then, place the flexible connection 11 on the claw 3-2 of the positioning plate 3. Adjust the height of the positioning plate 3 by rotating the positioning rod 4 so that the flexible connection 11 contacts the moving conductive end of the arc-extinguishing chamber 10. Then, pass the insulating pull rod 12 through the flexible connection 11 from above and screw it into the arc-extinguishing chamber 10. First, tighten it manually. After the screwing depth is close to meeting the assembly height requirements, use one wrench to hold the clamping position of the arc-extinguishing chamber and another torque wrench to hold the clamping position of the insulating pull rod 12 and tighten it until the torque wrench reaches the tightening torque. This completes the assembly of the circuit breaker vacuum arc-extinguishing chamber.

[0041] The positioning plate 3 positions and limits the flexible connection. The spacing between the claws 3-2 does not exceed the width of the flexible connection, ensuring that the flexible connection will not rotate during the assembly process. The positioning height is controlled at the moving conductive end of the arc-extinguishing chamber. At the same time, the height of the flexible connection clamping assembly is adjustable, so that the overall positioning height of the tooling meets the requirements of the arc-extinguishing chamber assembly. The positioning height of the flexible connection is just in contact with the moving conductive end of the arc-extinguishing chamber, and it is convenient to make fine adjustments to the assembly height of the arc-extinguishing chamber.

[0042] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tooling for assembling a vacuum interrupter chamber of a circuit breaker, characterized in that, It includes a base plate (1), a positioning bracket (2), a flexible connection clamping assembly, and an arc-extinguishing chamber clamping assembly; the positioning bracket (2) is fixed on the base plate (1), the flexible connection clamping assembly is vertically and flexibly arranged on the top of the positioning bracket (2), including a positioning plate (3) for fixing the flexible connection and a positioning rod (4) for supporting the vertical movement of the positioning plate (3), and the arc-extinguishing chamber clamping assembly is arranged in the middle of the positioning bracket (2), including a clamping rod (7) with an adjustable opening for clamping the arc-extinguishing chamber and a tension spring (8) for providing clamping force to the clamping rod (7).

2. The assembly fixture for a circuit breaker vacuum interrupter according to claim 1, characterized in that, The positioning plate (3) includes a fixing plate (3-1) and a claw (3-2). The claw (3-2) is fixed soft connection. The fixing plate (3-1) is provided with a fixing plate positioning hole. A bearing is provided on the lower side of the fixing plate positioning hole. The positioning rod (4) passes through the fixing plate positioning hole, the bearing and is movably connected to the positioning bracket (2).

3. The assembly fixture for a circuit breaker vacuum interrupter according to claim 1, characterized in that, The bottom of the positioning rod (4) is provided with an external thread, which is threaded to the positioning bracket (2), and the top is provided with a hexagonal stern head.

4. The assembly fixture for a circuit breaker vacuum interrupter according to claim 1, characterized in that, The positioning bracket (2) is vertically fixed on one side of the base plate (1), and has a U-shaped cross section. The bottom of the positioning bracket (2) is provided with a bracket base (2-1) for connecting with the base plate (1), and the top of the positioning bracket (2) is provided with a bracket top plate (2-2) for connecting with the positioning rod (4).

5. The assembly fixture for a circuit breaker vacuum interrupter according to claim 1, characterized in that, The arc-extinguishing chamber clamping assembly also includes a clamp rod mounting base (6), which is U-shaped and fixedly connected to the positioning bracket (2). The clamp rod (7) is set on both sides of the clamp rod mounting base (6), and the tension spring (8) is set between the clamp rod (7) and the clamp rod mounting base (6).

6. The assembly fixture for a circuit breaker vacuum interrupter according to claim 5, characterized in that, The side wall of the clamp rod mounting base (6) is provided with a support lug (6-1), and the clamp rod (7) is provided with a corresponding clamp rod lug (7-1). The two are connected by a fixing pin (9).

7. The assembly fixture for a circuit breaker vacuum interrupter according to claim 5, characterized in that, The clamp rod mounting base (6) has symmetrically arranged clamp rod supports (6-2) extending outward at the U-shaped opening.

8. The assembly fixture for a circuit breaker vacuum interrupter according to claim 1, characterized in that, A soft pad (7-2) is provided at the top of the clamp (7).

9. The assembly fixture for a circuit breaker vacuum interrupter according to claim 1, characterized in that, The surface of the base plate (1) is provided with a positioning groove.

10. The assembly fixture for a circuit breaker vacuum interrupter according to claim 1, characterized in that, The positioning bracket (2) has symmetrical retaining rods (5) on both sides. The upper end of the retaining rod (5) is connected to the fixing plate (3-1), and the lower end is provided with a reinforcing block. The reinforcing block fills the gap between the retaining rod (5) and the side wall of the positioning bracket (2).

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