An overhanging wire clamp

Abstract

The utility model discloses a kind of overhang wire clips, belong to overhang wire clip technical field.It include wire clip body and two U-shaped bolts, the inside of wire clip body is provided with wire clamping groove, the outer surface of wire clip body is equipped with hanging plate and four first support plates, two The two ends of U-shaped bolt are respectively slidingly penetrated four first support plates, and are locked by screw cap thread, connection plate is connected on U-shaped bolt, the bottom surface of connection plate is connected with wire clamping plate, by setting matched locking mechanism between U-shaped bolt and wire clip body, in the process that screw cap is realized wire clamping plate compression wire body, self-locking action can be completed simultaneously, so that even if subsequent screw cap appears loosening sign due to wire body shaking, wire clamping plate can still ensure that compression force to wire body is maintained all the time, and then wire body can be avoided from relatively slipping due to insufficient compression force, the anti-loosening ability and long-term use stability of wire clip are significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of suspension clamp technology, and in particular to a suspension clamp. Background Technology

[0002] Suspension clamps are indispensable and critical fastening devices in power transmission and distribution line systems. Their core function is to stably fix small- to medium-section overhead conductors or lightning protection wires to the insulators of straight poles. They can also be used for conductor transposition operations on transposed towers and for jumper fixing on tension towers and angle towers. Due to their simple structure, convenient on-site installation, and high long-term reliability, these devices are widely used in transmission and distribution lines of various voltage levels and are fundamental components ensuring the overall stability of the line and the safety of power transmission.

[0003] In practical applications, suspension clamps are exposed to the outdoor natural environment for extended periods, and must withstand the influence of various external factors such as wind, icing, and temperature changes. Among these, wind is one of the main causes of relative slippage between the conductor and the clamp. When wind acts on overhead conductors, the conductor will experience periodic swaying or swinging. The alternating force generated by this swaying will be continuously transmitted to the clamp's fastening bolts (such as the U-bolts and nuts of conventional suspension clamps). Over time, this alternating force can easily cause the threaded connection between the bolt and nut to loosen, thereby reducing the overall clamping structure stability of the clamp. When the bolts loosen to a certain extent, the clamping force on the conductor is significantly reduced, and the static friction between the conductor and the inner wall of the clamp is insufficient to resist the slippage force generated by the conductor's swaying. Ultimately, this leads to relative slippage between the conductor and the suspension clamp. Such slippage not only disrupts the intended route of the line but may also cause wear on the conductor surface and deformation of the internal structure of the clamp. In severe cases, it may even cause line faults, affecting the continuity and safety of power transmission and distribution. Utility Model Content

[0004] The purpose of this utility model is to solve the problem of relative slippage between the wire body and the suspension clamp in the prior art, and to propose a suspension clamp.

[0005] The technical solution of this utility model is as follows: a suspension wire clamp, including a wire clamp body and two U-bolts. The wire clamp body has a wire clamping groove inside. A hanging plate and four first support plates are installed on the outer surface of the wire clamp body. The two ends of the two U-bolts slide through the four first support plates respectively and are locked by the thread of nuts. A connecting plate is connected to the U-bolt. A wire clamping plate is connected to the bottom surface of the connecting plate. A locking mechanism corresponding to the wire clamping plate is provided on the wire clamp body.

[0006] The locking mechanism includes a limiting plate connected to one side of the connecting plate, and the limiting plate has an inclined groove and a limiting hole inside.

[0007] The inclined groove is an inclined plane, and its depth gradually increases along the direction close to the clamping plate, so that the end away from the clamping plate is the shallowest end. The limiting hole is opened at the shallowest end of the inclined groove and is connected to the inclined groove.

[0008] The upper surface of the clamp body is connected to a second support plate. The second support plate has a circular hole inside. A spring is connected inside the circular hole. The other end of the spring is connected to a pull plate. A limit rod is connected to the outer surface of the pull plate. The other end of the limit rod slides through the second support plate and is inserted into the limit hole.

[0009] The connecting plate has an arc-shaped groove inside that is adapted to the line body, and an anti-slip pad is installed inside the arc-shaped groove.

[0010] The internal connection of the clamping groove has multiple anti-slip protrusions that are evenly distributed.

[0011] In operation, this invention features a locking mechanism between the U-bolt and the clamp body. During the tightening of the nut to press the wire into place, a self-locking action is simultaneously achieved. This ensures that even if the nut loosens due to wire movement, the clamp maintains its pressure on the wire, preventing relative slippage due to insufficient pressure. This significantly improves the clamp's resistance to loosening and its long-term stability.

[0012] By installing anti-slip pads in the arc groove of the connecting plate and setting multiple equally distributed anti-slip protrusions in the clamping groove of the clamp body, the static friction between the wire and the clamping plate can be increased, and the surface of the wire can be buffered and protected to prevent the wire from being damaged by hard clamping. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 2 This is a schematic diagram showing the connection between the wire clamp body and the second support plate of this utility model. Figure 3 This is a structural diagram of the connecting plate and the limiting plate of this utility model. Figure 4 This is a schematic diagram showing the connection between the limiting plate and the limiting rod of this utility model. Figure 5 This is a schematic diagram showing the connection between the limiting plate and the spring of this utility model; In the diagram: 1. Wire clamp body; 2. Hanging plate; 3. First support plate; 4. U-bolt; 5. Connecting plate; 6. Wire clamping plate; 7. Limiting plate; 8. Inclined groove; 9. Limiting hole; 10. Second support plate; 11. Spring; 12. Pull plate; 13. Limiting rod; 14. Anti-slip pad; 15. Anti-slip boss. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] like Figure 1-5 As shown, a suspension clamp includes a clamp body 1 and two U-bolts 4. The clamp body 1 serves as the basic load-bearing component of the entire suspension clamp, and its material is preferably high-strength aluminum alloy or stainless steel. The clamp body 1 has a clamping groove inside for accommodating the wire. The outer surface of the clamp body 1 is equipped with a hanging plate 2 and four first support plates 3. The hanging plate 2 is used to connect the entire suspension clamp to the external insulator fittings to realize the overall suspension installation of the suspension clamp. The four first support plates 3 are symmetrically distributed in pairs and are respectively vertically fixed to the left and right sides of the outer surface of the clamp body 1. They also have through holes that are adapted to the diameter of the U-bolts 4, providing a support base for the insertion and sliding of the U-bolts 4 and preventing the U-bolts 4 from shifting during the tightening process.

[0016] The two ends of the two U-bolts 4 slide through the four through holes of the first support plate 3 respectively and are locked by the thread of the nut. The bottom of the arc section of the U-bolt 4 is connected to the connecting plate 5. The connecting plate 5 and the U-bolt 4 are fixed by welding or integral molding process. The bottom surface of the connecting plate 5 is connected to the wire clamping plate 6. The wire clamp body 1 is provided with a locking mechanism corresponding to the wire clamping plate 6. The locking mechanism is linked with the U-bolt 4 and the connecting plate 5 to achieve self-locking after clamping the wire.

[0017] The locking mechanism includes a limiting plate 7 connected to one side of the connecting plate 5. The height and thickness of the limiting plate 7 are designed according to the overall dimensions of the wire clamp to ensure sufficient structural strength to withstand the limiting force. The limiting plate 7 has an inclined groove 8 and a limiting hole 9 inside. The inclined groove 8 has an inclined plane structure, and its depth gradually increases along the direction close to the wire clamp 6. The purpose of this depth variation design is that when the limiting plate 7 moves with the connecting plate 5 towards the direction close to the second support plate 10, the groove wall of the inclined groove 8 can form a smooth and progressive contact with the end of the limiting rod 13, avoiding the component jamming or damage due to sudden contact force. The limiting hole 9 is opened at the shallowest end of the inclined groove 8 and communicates with the inclined groove 8. The diameter of the limiting hole 9 is clearance-fitted with the outer diameter of the limiting rod 13 to ensure that the limiting rod 13 can be smoothly inserted, and at the same time, there is no excessive shaking after insertion, ensuring the limiting stability.

[0018] A second support plate 10 is connected to the upper surface of the clamp body 1. The position of the second support plate 10 corresponds to that of the limiting plate 7, ensuring that the limiting plate 7 can cooperate with the limiting rod 13 on the second support plate 10 when it moves. A round hole is opened inside the second support plate 10, and a spring 11 is connected inside the round hole. The other end of the spring 11 is connected to a pull plate 12. The outer surface of the pull plate 12 is provided with anti-slip texture, which makes it easy to manually pull the pull plate 12 to release the self-locking. The outer surface of the pull plate 12 is connected to the limiting rod 13. The other end of the limiting rod 13 slides through the second support plate 10 and can be inserted into the limiting hole 9 under the drive of the spring 11.

[0019] The connecting plate 5 has an arc-shaped groove inside that is adapted to the wire body. The position of the arc-shaped groove corresponds to the arc-shaped surface of the clamping plate 6, so that when the wire body is clamped, both the upper and lower sides can fit into the arc-shaped structure, improving the clamping stability. An anti-slip pad 14 is installed inside the arc-shaped groove. The anti-slip pad 14 is made of nitrile rubber or neoprene rubber and is installed in the arc-shaped groove by adhesive or by fixing with a slot.

[0020] The clamp body 1 has multiple anti-slip protrusions 15 connected inside the clamping groove. The top of the anti-slip protrusions 15 is machined into an arc surface to prevent sharp edges from scratching the wire. The lower surface of the wire can contact multiple anti-slip protrusions 15 at the same time, so as to evenly distribute the pressure and enhance friction.

[0021] When actually installing the anti-slip suspension clamp, firstly, the construction personnel place the overhead conductor or lightning protection wire to be fixed into the clamping groove of the clamp body 1, adjust the position of the conductor so that it is centered, and at this time the lower surface of the conductor is in complete contact with the anti-slip protrusion 15 in the clamping groove. Then, the two ends of the two U-bolts 4 are respectively passed through the through holes of the four first support plates 3 on both sides of the clamp body 1. Flat washers and spring washers are respectively put on the two ends of the U-bolts 4, and then the nuts are installed. The nuts are gradually tightened using a torque wrench. As the nuts are tightened, the U-bolts 4. Under downward pulling force, the connecting plate 5 and the clamping plate 6 move synchronously towards the direction of the cable body. The anti-slip pad 14 in the arc groove below the clamping plate 6 first contacts the upper surface of the cable body, and gradually generates a clamping force as it continues to tighten. At this time, the cable body begins to be clamped by the upper and lower sides. While the connecting plate 5 moves, the limiting plate 7 on one side also moves synchronously towards the direction of the second support plate 10. When the limiting plate 7 moves to a certain distance, the groove wall of its internal inclined groove 8 contacts the end of the limiting rod 13. Since the inclined groove 8 is inclined and its depth gradually increases, as... As the limiting plate 7 continues to move, the groove wall of the inclined groove 8 exerts a horizontal squeezing force on the end of the limiting rod 13, pushing the limiting rod 13 to move away from the limiting plate 7. The limiting rod 13 drives the pull plate 12 to move synchronously, thereby stretching the spring 11 in the round hole of the second support plate 10. The spring 11 is now in a stretched state and stores elastic potential energy. Continue to tighten the nut until the torque wrench reaches the preset torque value. At this time, the clamping plate 6 completely presses the wire body. The wire body is tightly clamped by the anti-slip protrusion 15 of the clamping groove and the anti-slip pad 14 of the clamping plate 6. The wire body and the clamping plate are tightly clamped together. When the static friction reaches its maximum value, initial fixation is achieved. At the same time, the limiting plate 7 moves to the preset position along with the connecting plate 5. The limiting hole 9 on the limiting plate 7 is exactly coaxial with the limiting rod 13. At this time, the squeezing force of the inclined groove 8 on the limiting rod 13 disappears, the spring 11 releases the stored elastic potential energy, and pulls the pull plate 12 and the limiting rod 13 to quickly reset towards the limiting plate 7. The end of the limiting rod 13 smoothly inserts into the interior of the limiting hole 9, completing the self-locking of the locking mechanism. Then, the entire suspension clamp is suspended and fixed on the insulator by the hanging plate 2, completing the entire installation process.

[0022] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 suspension clamp, comprising a clamp body (1) and two U-bolts (4), characterized in that: The wire clamp body (1) has a wire clamping groove inside. The outer surface of the wire clamp body (1) is equipped with a hanging plate (2) and four first support plates (3). The two ends of the two U-bolts (4) slide through the four first support plates (3) respectively and are locked by the thread of the nuts. A connecting plate (5) is connected to the U-bolts (4). A wire clamping plate (6) is connected to the bottom surface of the connecting plate (5). A locking mechanism corresponding to the wire clamping plate (6) is provided on the wire clamp body (1).

2. A suspension clamp according to claim 1, characterized in that, The locking mechanism includes a limiting plate (7) connected to one side of the connecting plate (5), and the limiting plate (7) has an inclined groove (8) and a limiting hole (9) inside.

3. A suspension clamp according to claim 2, characterized in that, The inclined groove (8) is an inclined plane, and its depth gradually increases along the direction close to the clamping plate (6), so that the end away from the clamping plate (6) is the shallowest end. The limiting hole (9) is opened at the shallowest end of the inclined groove (8) and is connected to the inclined groove (8).

4. A suspension clamp according to claim 3, characterized in that, The upper surface of the clamp body (1) is connected to a second support plate (10). The second support plate (10) has a circular hole inside. A spring (11) is connected inside the circular hole. The other end of the spring (11) is connected to a pull plate (12). A limit rod (13) is connected to the outer surface of the pull plate (12). The other end of the limit rod (13) slides through the second support plate (10) and is inserted into the limit hole (9).

5. A suspension clamp according to claim 1, characterized in that, The connecting plate (5) has an arc-shaped groove inside that is adapted to the line body, and an anti-slip pad (14) is installed inside the arc-shaped groove.

6. A suspension clamp according to claim 1, characterized in that, The internal connection of the clamping groove is provided with multiple anti-slip protrusions (15) that are evenly distributed.

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