Wedge-shaped strain clamp

Abstract

The utility model discloses a wedge-shaped strain clamp which comprises a shell and a pull rod arranged on the shell in a penetrating mode, a left wedge core and a right wedge core which are attached to each other are arranged in the shell, clamping grooves are formed in the adjacent sides of the left wedge core and the right wedge core, inverted teeth and spikes are arranged in the clamping grooves, and the left wedge core and the right wedge core are arranged in the clamping grooves. The left wedge core and the right wedge core are provided with inverted teeth, the inverted teeth are arranged in a staggered mode, alignment blocks are integrally formed on one side of the left wedge core and one side of the right wedge core, a clamping plate is arranged on one side of the right wedge core, and a protruding block is arranged on one side of the left wedge core. When the wire is inserted into the inverted teeth, the wire generates tooth-shaped deformation and is embedded between the inverted teeth, so that the friction force between the wire and the wire is greatly increased, the wire does not slide with the left wedge core and the right wedge core, the wire falling phenomenon is avoided, and the safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of power fittings technology, specifically a wedge-shaped tension clamp. Background Technology

[0002] Wedge-shaped tension clamps are a type of hardware used in power lines. Their main function is to fix overhead insulated aluminum conductors or bare aluminum conductors to insulators on corner or terminal tension poles, thereby fixing or tightening the overhead conductors.

[0003] Existing wedge-shaped tension clamps typically have reverse teeth on the wedge core to increase friction with the conductor, making the conductor more securely fixed. For example, Chinese patent number 202320575359.6 discloses a pull rod type wedge-shaped insulated conductor tension clamp. This utility model increases the friction between the wedge core and the insulated conductor by setting a clamp groove with reverse teeth. However, the friction increased by the reverse teeth alone is relatively limited. When the friction between the wedge core and the conductor is insufficient to withstand the tension of the conductor, the conductor will fall off, which poses a certain safety hazard. Utility Model Content

[0004] The purpose of this invention is to provide a wedge-shaped tension clamp to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a wedge-shaped tension clamp, comprising a housing and a pull rod passing through the housing. The housing has a left wedge core and a right wedge core that fit together inside. Each of the left and right wedge cores has a clamping groove on an adjacent side. The clamping groove has back teeth and spikes inside. The back teeth are staggered. Each of the left and right wedge cores has an alignment block integrally formed on one side. The right wedge core has a retaining plate on one side, and the left wedge core has a protrusion on one side.

[0006] As a preferred embodiment of this utility model, the two ends of the pull rod are respectively threaded with a first nut and a second nut.

[0007] In a preferred embodiment of this utility model, the thread direction of the first nut is opposite to that of the thread direction of the second nut.

[0008] As a preferred embodiment of this utility model, a flat washer is fitted onto the pull rod.

[0009] As a preferred embodiment of this utility model, the cross-section of the clamping groove is an arc-shaped structure.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the spikes provided can penetrate into the wire, and when the left and right wedges clamp the wire, the wire will undergo tooth-like deformation and embed itself between the reverse teeth, thereby greatly increasing the friction between the wire and the left and right wedges, preventing the wire from slipping and avoiding the phenomenon of the wire falling off, thus improving safety. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0012] Figure 2 This is a schematic diagram of the bottom structure of this utility model;

[0013] Figure 3 This utility model Figure 1 Exploded view;

[0014] Figure 4 This is a schematic diagram of the right wedge core of this utility model.

[0015] In the diagram: 1. Outer shell; 2. Pull rod; 3. Left wedge core; 4. Right wedge core; 5. First nut; 6. Second nut; 7. Protrusion; 8. Clamping plate; 9. Alignment block; 10. Flat washer; 11. Clamping groove; 12. Back teeth; 13. Spike. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1 to 4This utility model provides a technical solution: a wedge-shaped tension clamp, including a housing 1 and a pull rod 2 passing through the housing 1. The housing 1 has a left wedge core 3 and a right wedge core 4 that fit together inside. The housing 1 also has a wedge-shaped groove inside, with one end gradually narrowing. The left wedge core 3 and the right wedge core 4 are slidably installed within the wedge-shaped groove inside the housing 1. Both the left wedge core 3 and the right wedge core 4 are wedge-shaped structures. Under the tension of the conductor, the left wedge core 3 and the right wedge core 4 move towards the narrowing part of the wedge-shaped groove, causing them to move closer together and clamping the conductor more firmly. Each side of the left wedge core 3 and the right wedge core 4 has a clamping groove 11, and the inside of the clamping groove 11 has an inverted... The teeth 12 and spikes 13 are used to penetrate the wire when the left wedge core 3 and the right wedge core 4 clamp the wire. The spikes 13 can penetrate the wire, and the wire will deform into a tooth shape and embed between the inverted teeth 12, which greatly increases the friction between the wire and the left wedge core 3 and the right wedge core 4, so that the wire will not slip and the wire will not fall off. The inverted teeth 12 are staggered. One side of the left wedge core 3 and the right wedge core 4 are integrally formed with alignment blocks 9. One side of the right wedge core 4 is provided with a locking plate 8. The locking plate 8 is used to lock between the protrusion 7 and the alignment block 9, thereby limiting the left wedge core 3 and the right wedge core 4 and preventing the left wedge core 3 and the right wedge core 4 from shifting. One side of the left wedge core 3 is provided with a protrusion 7.

[0018] The two ends of the pull rod 2 are respectively threaded with a first nut 5 and a second nut 6, which serve to prevent loosening.

[0019] In this case, the thread direction of the first nut 5 is opposite to that of the second nut 6. When the first nut 5 and the second nut 6 are tightened, an interactive pressure is generated between them. This pressure makes it difficult for them to rotate relative to each other. When subjected to vibration, if the first nut 5 tends to loosen, its loosening direction is exactly the tightening direction of the second nut 6. Therefore, the tightening force of the second nut 6 will prevent the first nut 5 from loosening, thereby maintaining the tightness of the connection and preventing loosening.

[0020] The pull rod 2 is fitted with a flat washer 10, which can prevent the first nut 5 from loosening under vibration or torque, thereby ensuring the stability of the connection.

[0021] The clamping groove 11 has an arc-shaped cross-section, which allows the left wedge core 3 and the right wedge core 4 to better fit the wire.

[0022] Specifically, during use, the wire is passed through the clamping groove 11. Under the action of the outer shell 1, the left wedge core 3 and the right wedge core 4 move closer to each other to clamp the wire. The spike 13 will pierce into the wire, and the wire will undergo tooth-like deformation and embed itself between the reverse teeth 12, thereby greatly increasing the friction with the wire. At the same time, the left wedge core 3 and the right wedge core 4 will move towards the narrowing part of the wedge groove under the pulling force of the wire, so that the left wedge core 3 and the right wedge core 4 move closer to each other, making the clamping of the wire more secure.

[0023] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wedge-shaped tension clamp, comprising a housing (1) and a pull rod (2) passing through the housing (1), wherein the housing (1) has a left wedge core (3) and a right wedge core (4) that fit together, characterized in that: The left wedge core (3) and the right wedge core (4) are each provided with a clamping groove (11) on their adjacent sides. The clamping groove (11) is provided with a back tooth (12) and a spike (13) inside. The back teeth (12) are staggered. The left wedge core (3) and the right wedge core (4) are each integrally formed with an alignment block (9). The right wedge core (4) is provided with a clamping plate (8) on one side. The left wedge core (3) is provided with a protrusion (7) on one side.

2. A wedge-shaped tension clamp according to claim 1, characterized in that: The two ends of the pull rod (2) are respectively threaded with a first nut (5) and a second nut (6).

3. A wedge-shaped tension clamp according to claim 2, characterized in that: The thread direction of the first nut (5) is opposite to that of the thread direction of the second nut (6).

4. A wedge-shaped tension clamp according to claim 1, characterized in that: A flat washer (10) is fitted onto the pull rod (2).

5. A wedge-shaped tension clamp according to claim 1, characterized in that: The clamping groove (11) has an arc-shaped cross-section.

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