A circuit breaker stud universal connection wire clamp

Abstract

The utility model discloses a circuit breaker stake head general connecting wire clamp, including the wire clamp body, and its characterized in that: the wire clamp body includes upper clamp body and lower clamp body, upper clamp body and lower clamp body are opposite and set up, the lower clamp body top surface one side is established with the connecting groove, the connecting groove inner wall is fixedly connected with the wire drum, the upper clamp body bottom surface is located the pressure wire groove who established with the connecting groove opposite position, the pressure wire groove surface is fixedly connected with the pressure wire block, and the pressure wire block surface and wire drum surface contact, the lower clamp body top surface other side is established with the guide position, the upper clamp body bottom surface is located the guide block who fixedly connected with the guide position opposite position, and the guide block and guide position movable contact. The utility model discloses through the above structure design, in the promotion connection stability, accuracy and firmness, has simplified the construction process, has strengthened the general adaptive ability of product, has provided reliable connection guarantee for the safe and stable operation of electric power system.

Description

Technical Field

[0001] This utility model relates to the field of connecting clamp technology, specifically a universal connecting clamp for circuit breaker terminals. Background Technology

[0002] Wire clamps are iron or aluminum metal accessories that can be fixed to conductors. Most of them need to withstand significant tensile forces during operation, and some also need to ensure good electrical contact. They are mainly used for connecting busbar downleads in substations to the outgoing terminals of electrical equipment (such as transformers, circuit breakers, isolating switches, wall bushings, etc.). Since the outgoing terminals of commonly used electrical equipment are made of copper and aluminum, and busbar downleads are divided into aluminum stranded wire and steel-core aluminum stranded wire, wire clamps are classified into two series based on material: aluminum wire clamps and copper-aluminum transition wire clamps. The universal connection clamps used in traditional circuit breaker terminals have two prominent problems:

[0003] On the one hand, the universal connecting clamps on the circuit breaker terminals are prone to coming loose when they are tightening the connecting wires. This not only affects the stable conduction of the circuit, but may also cause safety hazards due to poor contact.

[0004] On the other hand, when clamping the connecting wires, this type of clamp lacks an effective guiding structure, which makes it easy for the installation position of the connecting wires to shift, increasing the difficulty of construction and adjustment, and making it difficult to guarantee the accuracy and reliability of the connection. Summary of the Invention

[0005] The purpose of this utility model is to provide a universal connecting clamp for circuit breaker terminals to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a universal connecting clamp for circuit breaker terminals, comprising a clamp body, characterized in that: the clamp body comprises an upper clamp body and a lower clamp body, the upper clamp body and the lower clamp body are arranged opposite to each other, a connecting groove is formed on one side of the top surface of the lower clamp body, a terminal block is fixedly connected to the inner wall of the connecting groove, a pressure groove is formed on the bottom surface of the upper clamp body at a position opposite to the connecting groove, a pressure block is fixedly connected to the surface of the pressure groove, and the surface of the pressure block is in contact with the surface of the terminal block, a guide position is formed on the other side of the top surface of the lower clamp body, a guide block is fixedly connected to the bottom surface of the upper clamp body at a position opposite to the guide position, and the guide block is in movable contact with the guide position.

[0007] Preferably, the lower clamping body has multiple limiting grooves on the side of the outer wall near the connecting groove, and the upper clamping body has a limiting block fixedly connected to the limiting groove at the relative position of the limiting groove, and the limiting block moves within the limiting groove.

[0008] Preferably, a connecting plate is fixedly connected to the front end face of the lower clamp, and a plurality of connecting holes are arranged on the surface of the connecting plate.

[0009] Preferably, a fastening hole is provided in the middle of the surface of the lower clamp.

[0010] Preferably, the surface of the upper clamping body has a shaped hole at a position opposite to the fastening hole, and a fastening bolt is connected between the shaped hole and the fastening hole.

[0011] Beneficial effects

[0012] Compared with existing technologies, the beneficial effects of this utility model are as follows:

[0013] 1. The wire clamp body of this utility model adopts a combination structure of an upper clamp body and a lower clamp body. A terminal cylinder is fixedly installed in the connecting groove of the lower clamp body, and a wire pressing block is installed at a corresponding position on the upper clamp body. When the connecting wire is clamped, the wire pressing block and the surface of the terminal cylinder are in close contact, forming a double clamping structure. This design greatly enhances the clamping force on the connecting wire, effectively avoids the phenomenon of falling off that is prone to occur during the use of traditional wire clamps, ensures that the circuit always maintains a stable conductive state, reduces the safety risks caused by poor contact from the root, and significantly improves the safety and reliability of power connections.

[0014] 2. This utility model features a guide post at the top of the lower clamp and a corresponding guide block fixed to the upper clamp, forming a precise guiding fit structure. During the installation of the connecting wire, the guide block slides along the guide post, effectively constraining the installation path of the connecting wire and avoiding the installation position deviation problem caused by the lack of guidance in traditional wire clamps. This design not only reduces the difficulty of adjustment during construction but also ensures that the connecting wire is always in the preset optimal connection position, significantly improving the accuracy of the connection and providing structural protection for the stable operation of the circuit.

[0015] 3. In this invention, a limiting groove on the outer wall of the lower clamping body forms a sliding limiting fit with a limiting block on the upper clamping body. During the clamping operation, the limiting block moves directionally along the limiting groove, effectively limiting the relative displacement between the upper and lower clamping bodies and preventing lateral displacement or separation during force application. Simultaneously, by connecting the irregular hole and the fastening hole with fastening bolts, rigid fixation of the upper and lower clamping bodies can be achieved, further enhancing the overall structural robustness of the clamp and ensuring a stable connection even under long-term use and vibration environments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the lower clamping structure of this utility model;

[0018] The correspondence between the labels and component names in the attached figures is as follows:

[0019] 1. Wire clamp body; 2. Lower clamp body; 3. Upper clamp body; 4. Connecting plate; 5. Fastening bolt; 21. Connecting groove;

[0020] 22. Terminal block; 23. Guide position; 24. Limiting groove; 25. Fastening hole; 31. Wire clamping groove; 32. Wire clamping block;

[0021] 33. Guide block; 34. Limiting block; 35. Irregular hole; 41. Connecting hole. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "front," "rear," "inner," "outer," "vertical," and "horizontal," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] like Figure 1-2 This is a schematic diagram of the structure of a universal connecting clamp for circuit breaker terminals according to a preferred embodiment of the present invention. In this embodiment, the universal connecting clamp for circuit breaker terminals has a core structure of clamp body 1. The clamp body 1 adopts a split combination design and is composed of two parts: an upper clamp body 3 and a lower clamp body 2. The upper clamp body 3 and the lower clamp body 2 are arranged in parallel relative to each other, and precise docking and fastening are achieved through multiple mating structures.

[0025] The lower clamp 2, serving as the basic load-bearing component of the cable clamp, has a connecting groove 21 on one side of its top surface for cable positioning. An elliptical connector 22 is fixedly connected to the inner wall of the connecting groove 21 via welding. The connector 22 is made of a high-conductivity copper alloy, and its inner wall is smoothed to reduce cable contact resistance. An arc-shaped wire-pressing groove 31 is formed on the bottom surface of the upper clamp 3, opposite to the connecting groove 21. A wire-pressing block 32 is integrally formed on the surface of the wire-pressing groove 31. The curvature of the wire-pressing block 32 perfectly matches the curvature of the outer wall of the connector 22. When the upper and lower clamps are closed, the surface of the wire-pressing block 32 and the surface of the connector 22 form a surface contact, achieving a wrap-around clamping of the cable.

[0026] In this embodiment, to ensure the accuracy of cable installation, a long strip-shaped guide 23 is machined on the other side of the top surface of the lower clamp 2. The guide 23 adopts a U-shaped groove structure design, and its inner wall is provided with a 0.5mm wear-resistant coating. A guide block 33 is fixed on the bottom surface of the upper clamp 3 at a position corresponding to the guide 23, and its cross-sectional dimensions form a 0.1mm-0.5mm clearance fit with the groove size of the guide 23. During installation, the guide block 33 slides along the length of the guide 23, achieving precise guidance of the upper and lower clamps and avoiding installation misalignment.

[0027] In this embodiment, multiple rectangular limiting grooves 24 are evenly formed on the outer wall of the lower clamping body 2 near the connecting groove 21. The limiting grooves 24 are arranged horizontally with a spacing of 30mm-50mm. A limiting block 34 is integrally formed on the outer wall of the upper clamping body 3 at the position corresponding to the limiting groove 24. The length and width of the limiting block 34 are 0.2mm-0.4mm smaller than the limiting groove 24, respectively, to ensure that it can slide freely within the limiting groove 24. This structure can effectively limit the lateral displacement of the upper clamping body 3 and the lower clamping body 2, and prevent relative deflection during the clamping process.

[0028] In this embodiment, a fastening hole 25 is vertically opened in the middle of the surface of the lower clamp 2, and a special-shaped hole 35 is opened on the surface of the upper clamp 3 at the position corresponding to the fastening hole 25. The screw of the fastening bolt 5 passes through the special-shaped hole 35 and the fastening hole 25, and the nut of the fastening bolt 5 is used to achieve threaded connection. The bottom of the nut contacts the top of the upper clamp 3, so that the upper and lower clamps can be rigidly fixed.

[0029] In this embodiment, a connecting plate 4 is fixed to the front end face of the lower clamp 2 by welding. The surface of the connecting plate 4 has connecting holes 41 arranged in a horizontal direction with a spacing of 15mm. This can be adapted to the installation hole positions of circuit breaker terminals of different specifications, so as to realize the quick connection between the clamp and the circuit breaker.

[0030] Working principle

[0031] During cable connection, first place the cable to be connected into the terminal block 22 within the connecting groove 21 of the lower clamp 2. Then, align the guide block 33 of the upper clamp 3 with the guide position 23 of the lower clamp 2, simultaneously inserting the limiting block 34 into the limiting groove 24. Pass the screw of the fastening bolt 5 through the irregular hole 35 and the fastening hole 25, and tighten the nut of the fastening bolt 5 using a torque wrench. Slowly press down the upper clamp 3 until the clamping block 32 contacts the terminal block 22. The downward pressure of the clamping block 32 causes deformation of the terminal block 22, resulting in its inner wall contacting the cable surface. Finally, the cable is clamped and fixed. The clamp can be fixed to the circuit breaker terminal via the connecting hole 41 of the connecting plate 4, achieving a reliable connection of the power system.

[0032] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A universal connecting clamp for circuit breaker terminals, comprising a clamp body (1), characterized in that: The clamp body (1) includes an upper clamp body (3) and a lower clamp body (2). The upper clamp body (3) and the lower clamp body (2) are arranged opposite to each other. A connecting groove (21) is provided on one side of the top surface of the lower clamp body (2). A wire tube (22) is fixedly connected to the inner wall of the connecting groove (21). A wire pressing groove (31) is provided on the bottom surface of the upper clamp body (3) at the position opposite to the connecting groove (21). A wire pressing block (32) is fixedly connected to the surface of the wire pressing groove (31), and the surface of the wire pressing block (32) is in contact with the surface of the wire tube (22). A guide position (23) is provided on the other side of the top surface of the lower clamp body (2). A guide block (33) is fixedly connected to the bottom surface of the upper clamp body (3) at the position opposite to the guide position (23), and the guide block (33) is in movable contact with the guide position (23).

2. The universal connecting clamp for circuit breaker terminals according to claim 1, characterized in that: The lower clamp (2) has multiple limiting grooves (24) on the outer wall near the connecting groove (21). The upper clamp (3) has a limiting block (34) fixedly connected to the outer wall of the limiting groove (24) at a position opposite to the limiting groove (24), and the limiting block (34) moves within the limiting groove (24).

3. The universal connecting clamp for circuit breaker terminals according to claim 2, characterized in that: The lower clamp (2) is fixedly connected to a connecting plate (4) at its front end face, and the surface of the connecting plate (4) is provided with a plurality of connecting holes (41).

4. The universal connecting clamp for circuit breaker terminals according to claim 3, characterized in that: A fastening hole (25) is provided in the middle of the surface of the lower clamp (2).

5. The universal connecting clamp for circuit breaker terminals according to claim 2, characterized in that: The surface of the upper clamp (3) is provided with a special-shaped hole (35) at a position opposite to the fastening hole (25), and a fastening bolt (5) is connected between the special-shaped hole (35) and the fastening hole (25).

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