A small nozzle fastening tool for a generator circuit breaker

Abstract

The utility model relates to a generator circuit breaker small spout fastening frock, including the clamping cylinder, the opening surface of clamping cylinder is opened and has the U type perforation along clamping cylinder axial extension and penetrates clamping cylinder, two U type perforation along the first radial arrangement of clamping cylinder, still be equipped with the fastening bolt along the second radial extension of clamping cylinder and with fastening nut cooperation fastening clamping cylinder on clamping cylinder. The utility model uses when, inserts small spout from the opening of clamping cylinder into the clamping cylinder, then uses fastening bolt and fastening nut and extrudes, reduces the width of U type perforation, even if clamping cylinder will clamp small spout to the inside, to realize the clamping of small spout, then again inserts small spout into the assembly place of movable contact, twists small spout in the assembly place, uses fastening bolt and fastening nut and carries out the force, guarantees the assembly process reliability, the setting of clamping cylinder simultaneously, it is convenient to insert small spout into movable contact, improves assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of circuit breakers, and more particularly to the field of circuit breaker small nozzle installation technology, specifically referring to a fastening fixture for a generator circuit breaker small nozzle. Background Technology

[0002] A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions, and capable of closing, carrying, and interrupting current under abnormal circuit conditions within a specified time. Circuit breakers are classified into high-voltage circuit breakers and low-voltage circuit breakers according to their application range. The boundary between high and low voltage is somewhat blurred; generally, circuit breakers above 3kV are referred to as high-voltage electrical appliances.

[0003] Circuit breakers are used to distribute electrical energy, infrequently start asynchronous motors, and protect power lines and motors. They automatically disconnect the circuit when severe overloads, short circuits, or undervoltage faults occur, functioning similarly to a combination of a fuse switch and over / under-temperature relays. Furthermore, they generally do not require component replacement after interrupting a fault current. They have gained widespread application.

[0004] In the generation, transmission, and use of electricity, power distribution is an extremely important link. The power distribution system includes transformers and various high- and low-voltage electrical equipment, with low-voltage circuit breakers being a widely used electrical appliance.

[0005] The small nozzle inside the generator circuit breaker is made of polytetrafluoroethylene (PTFE) material, which has a relatively smooth surface. Because it is located in the core of the arc-extinguishing chamber and has a relatively thin wall, it is impossible to add assembly process holes. When installing the small nozzle, it needs to be installed from top to bottom to the moving contact assembly point, which is located inside the moving contact. Due to the small size of the mounting hole and limited space, it is impossible to tighten it by hand during assembly. Utility Model Content

[0006] This utility model addresses the shortcomings of existing technologies by providing a small nozzle fastening fixture for generator circuit breakers. After clamping the small nozzle with a clamping sleeve, it is placed at the moving contact assembly point for assembly, thereby improving assembly efficiency and ensuring the reliability and safety of the nozzle during assembly and disassembly.

[0007] This utility model is achieved through the following technical solution: a small nozzle fastening fixture for a generator circuit breaker includes a clamp, and a U-shaped through hole extending along the axial direction of the clamp and penetrating the clamp is provided on the opening surface of the clamp. Two U-shaped through holes are arranged along the first radial direction of the clamp. A fastening bolt extending along the second radial direction of the clamp and cooperating with a fastening nut to fasten the clamp is also provided on the clamp.

[0008] In use, the small nozzle is inserted into the clamp through the opening of the clamp, and then the clamp is squeezed by the fastening bolt and the fastening nut to reduce the width of the U-shaped through hole, so that the clamp clamps the small nozzle inward, thereby clamping the small nozzle. Then the small nozzle is inserted into the assembly of the moving contact and screwed into the assembly. The fastening bolt and the fastening nut are used to apply force to ensure the reliability of the assembly process. At the same time, the clamp is designed to facilitate the insertion of the small nozzle through the narrow mounting hole of the moving contact into the moving contact, thereby improving the assembly efficiency.

[0009] Preferably, the first radial direction is perpendicular to the second radial direction, and the bolt cap and fastening nut of the fastening bolt fasten the clamp from the outside of the clamp.

[0010] In use, this preferred solution, by setting the first radial and second radial directions perpendicularly, facilitates the simultaneous compression of the U-shaped perforation when the fastening bolt and fastening nut are engaged. This ensures that when the clamping cylinder clamps the small nozzle, the corresponding parts on both sides of the U-shaped perforation have equal clamping force, avoiding a large difference in clamping force on both sides, which could cause unstable clamping of the small nozzle or damage to the small nozzle due to excessive clamping force.

[0011] Preferably, the plane of the fastening nut intersects with the U-shaped perforation. In this preferred embodiment, because the opening of the U-shaped perforation deforms more significantly during clamping than the bottom, the intersection of the plane of the fastening nut with the U-shaped perforation ensures a secure fastening effect.

[0012] Preferably, the clamp is further provided with a rubber pad located at the lower end of the fastening bolt and disposed opposite to it in the first radial direction. The rubber pad is connected to the wall of the clamp by screws.

[0013] This preferred design uses rubber pads to provide cushioning and anti-slip properties.

[0014] Preferably, there are two screws arranged along the axial direction of the clamp, and the clamp also has two process holes located between the two screws.

[0015] This preferred solution, through the setting of the process hole, makes it difficult to directly tighten the screw by inserting the wrench into the clamp opening due to the small size of the clamp opening. By setting the process hole, the internal hex wrench can be inserted into the clamp through the opposite process hole to tighten the screw. Since the process hole and the screw are not on the same horizontal plane, the wrench will be slightly tilted when in use, but this tilt will not affect the tightening of the screw by the wrench.

[0016] Preferably, the clamp is further provided with a handle extending through the clamp along a second radial direction. This preferred embodiment facilitates the rotation of the clamp by providing a handle.

[0017] The beneficial effects of this utility model are as follows: The small nozzle is inserted into the clamp through the opening of the clamp, and then the clamping bolt and nut are used to compress it, reducing the width of the U-shaped perforation. This allows the clamp to clamp the small nozzle inward, thus achieving clamping. The small nozzle is then inserted into the assembly point of the moving contact and screwed onto the assembly point. The clamping bolt and nut are used to apply force, ensuring the reliability of the assembly process. Simultaneously, the clamp design facilitates the insertion of the small nozzle into the moving contact, improving assembly efficiency. The perpendicular arrangement of the first and second radial directions allows for simultaneous compression of the U-shaped perforation when the clamping bolt and nut are engaged. This ensures that the clamping force on both sides of the U-shaped perforation is equal when the clamp clamps the small nozzle, preventing large differences in clamping force that could cause unstable clamping or damage to the small nozzle. The small nozzle can be disassembled and assembled simply by tightening and loosening the bolts, which is convenient and quick, improving the efficiency of disassembling and assembling the small nozzle. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Schematic diagram of cross-section at point AA; Figure 3 This is a diagram showing the structure of this utility model in use; As shown in the figure: 1. Handle, 2. Clamp, 3. Fastening nut, 4. Fastening bolt, 5. Rubber pad, 6. Screw, 7. Process hole, 8. U-shaped perforation, 9. Small nozzle, 10. Moving contact assembly. Detailed Implementation

[0019] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0020] See attached document Figure 1-3 This utility model discloses a small nozzle fastening fixture for a generator circuit breaker. The fixture includes a clamp 2. The opening surface of the clamp 2 is provided with a U-shaped through hole 8 that extends along the axial direction of the clamp 2 and penetrates the clamp 2. There are two U-shaped through holes 8, which are arranged along the first radial direction of the clamp 2, that is, the two U-shaped through holes 8 are symmetrically arranged about the axis of the clamp 2.

[0021] The clamp 2 is also provided with a fastening bolt 4 that extends along the second radial direction of the clamp 2 and cooperates with the fastening nut 3 to fasten the clamp 2.

[0022] The first radial direction is perpendicular to the second radial direction. The bolt head of the fastening bolt 4 and the fastening nut 3 fasten the clamp 2 from the outside of the clamp 2. The plane where the fastening nut 3 is located intersects with the U-shaped through hole 8.

[0023] The clamp 2 is also provided with a rubber pad 5 located at the lower end of the fastening bolt 4 and arranged opposite to it in the first radial direction. The rubber pad 5 is connected to the wall of the clamp 2 by a screw 6.

[0024] The screw 6 is a hexagonal head screw 6, and there are two screws 6. The two screws 6 are arranged along the axial direction of the clamp 2. The clamp 2 is also provided with two process holes 7 located between the two screws 6.

[0025] The clamp 2 is also provided with a handle 1 that extends through the clamp 2 along the second radial direction.

[0026] A method for using a fastening fixture for a small nozzle 9 of a generator circuit breaker, characterized by comprising the following steps: a. Install the two rubber pads 5 onto the inner wall of the clamp 2 using hex socket head cap screws 6. When installing the screws, insert the hex socket wrench into the clamp through the opposite process hole 7, tilt it slightly, and observe from the opening of the clamp to ensure that the hex socket wrench is aligned with the head of the screw 6. Then, turn the hex socket wrench to tighten it. After the fastening bolt 4 passes through the clamp 2, thread the fastening nut 3 onto the fastening bolt 4, so that the clamp 2 is located between the bolt head of the fastening bolt 4 and the fastening nut 3. Then, pass the handle 1 through the clamp 2, so that the handle 1 is symmetrically positioned about the clamp 2. b. After assembly, make the opening of the clamp 2 face downwards and insert the small nozzle 9 into the clamp 2. Tighten the fastening nut 3 with a wrench to squeeze the U-shaped perforation 8, so that the width of the U-shaped perforation 8 gradually decreases from the bottom of the hole to the opening, and the corresponding opening deforms greatly. Even if the gaps on both sides of the U-shaped perforation 8 become smaller, the tooling will clamp the small nozzle 9. c. Then, hold the handle 1 with both hands at the same time, put the small nozzle 9 into the moving contact, and align the bottom thread of the small nozzle 9 with the thread of the moving contact assembly 10. Then rotate the clamp 2 clockwise, and the clamp 2, along with the small nozzle 9, screws into the moving contact assembly 10, so that the small nozzle 9 is threadedly connected to the moving contact. d. Then tighten the fastening nut 3 to loosen the small nozzle from the clamp 2, and then remove the clamp 2 from the moving contact.

[0027] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A fastening fixture for a small nozzle of a generator circuit breaker, characterized in that: Includes a clamping sleeve (2), on the opening surface of the clamping sleeve (2) a U-shaped through hole (8) extending along the axial direction of the clamping sleeve (2) and penetrating the clamping sleeve (2), two U-shaped through holes (8) are arranged along the first radial direction of the clamping sleeve (2), and a fastening bolt (4) extending along the second radial direction of the clamping sleeve (2) and cooperating with a fastening nut (3) to fasten the clamping sleeve (2) is also provided on the clamping sleeve (2).

2. The generator circuit breaker small nozzle fastening fixture according to claim 1, characterized in that: The first radial direction is perpendicular to the second radial direction, and the bolt cap of the fastening bolt (4) and the fastening nut (3) fasten the clamp (2) from the outside of the clamp (2).

3. The generator circuit breaker small nozzle fastening fixture according to claim 1, characterized in that: The plane containing the fastening nut (3) intersects with the U-shaped through hole (8).

4. The generator circuit breaker small nozzle fastening fixture according to claim 1, characterized in that: The clamp (2) is also provided with a rubber pad (5) located at the lower end of the fastening bolt (4) and arranged opposite to it in the first radial direction. The rubber pad (5) is connected to the wall of the clamp (2) by a screw (6).

5. The generator circuit breaker small nozzle fastening fixture according to claim 4, characterized in that: Two screws (6) are provided, and the two screws (6) are arranged along the axial direction of the clamp (2). The clamp (2) is also provided with two process holes (7) located between the two screws (6).

6. The generator circuit breaker small nozzle fastening fixture according to claim 5, characterized in that: The clamp (2) is also provided with a handle (1) that extends through the clamp (2) along the second radial direction.

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