Strain clamp capable of being quickly connected

Abstract

The utility model discloses a strain clamp capable of rapid connection, comprising a clamp main body which is provided with a positioning channel used for cable positioning. The cable clamp further comprises a plurality of groups of quick connection assemblies, each quick connection assembly comprises a U-shaped rod, a pressing block and locking rings, guide holes are formed in the two sides of the cable clamp body, the U-shaped rod is provided with two locking blocks, the two locking rings are arranged on the peripheries of the two ends of the U-shaped rod in a sleeving mode respectively, push plates are arranged on the peripheries of the locking rings, arc-shaped locking grooves are formed in the inner peripheries of the locking rings, and the pressing blocks are arranged in the arc-shaped locking grooves. The ends, close to the wire clamp body, of the locking rings are provided with inlets and outlets communicated with the front ends of the arc-shaped locking grooves, the connecting portions of the arc-shaped locking grooves and the inlets and outlets are provided with guiding slopes, and when the locking blocks penetrate through the inlets and outlets of the corresponding locking rings and slide to the inner ends of the arc-shaped locking grooves, the locking rings abut against the wire clamp body. And the U-shaped rod pushes the pressing block to tightly press the cable in the positioning channel. According to the utility model, the cable can be quickly connected, the structure is simple, the operation is convenient, and the manpower consumption can be obviously reduced.

Description

Technical Field

[0001] This utility model relates to the field of power fittings for power transmission lines, and in particular to a tension clamp that can be quickly connected. Background Technology

[0002] Tension clamps are hardware used to fix cables, bear cable tension, and hang cables on tension strings or towers. Based on their structure and installation conditions, tension clamps can be broadly divided into two categories: The first category: Tension clamps must bear the full tension of the cable or lightning protection wire, with a clamp gripping force of not less than 90% of the rated tensile strength of the installed cable or lightning protection wire, but do not act as conductors. These clamps can be removed and reused after cable installation. Types of these clamps include bolt-type and wedge-type tension clamps. The second category: Tension clamps, in addition to bearing the full tension of the cable or lightning protection wire, also act as conductors. Therefore, once installed, these clamps cannot be removed and are also called "dead clamps." Because they are conductors, the installation of these clamps must be carried out carefully in accordance with the relevant installation and operation procedures.

[0003] Most existing power transmission lines are typically installed using tension clamps for fixation. However, the existing tension clamps have a relatively simple structure, usually consisting of a U-shaped sleeve and bolts. To clamp and limit the cable body, the bolts need to be tightened sequentially. In actual operation, due to the large number of bolts, using a hex wrench to rotate multiple bolts on each tension clamp is very time-consuming and labor-intensive. Utility Model Content

[0004] The purpose of this invention is to provide a tension clamp that can be quickly connected. This invention enables the rapid connection of cables, has a simple structure, is easy to operate, and can significantly reduce manpower consumption.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick-connect tension clamp, comprising a clamp body with a positioning channel for cable positioning; and multiple quick-connect components for locking the cable in the positioning channel, each quick-connect component including a U-shaped rod, a pressure block, and a locking ring. The pressure block is located on the side of the U-shaped rod near the positioning channel. Guide holes for the two ends of the U-shaped rod to pass through are provided on both sides of the clamp body. Two locking blocks are provided on the U-shaped rod. There are two locking rings, and the two locking rings are respectively fitted around the outer periphery of both ends of the U-shaped rod. The outer periphery of the locking ring is provided with a push plate, and the inner periphery of the locking ring is provided with an arc-shaped locking groove. The end of the locking ring near the main body of the wire clamp is provided with an inlet and outlet that communicates with the front end of the arc-shaped locking groove. The part of the arc-shaped locking groove that connects with the inlet and outlet is provided with a guide slope. When the locking block passes through the inlet and outlet of the corresponding locking ring and slides to the inner end of the arc-shaped locking groove, the locking ring abuts against the main body of the wire clamp, and the U-shaped rod pushes the pressure block to press the cable into the positioning channel.

[0006] By adopting the above technical solution, when fixing the cable, the cable is placed in the positioning channel of the clamp body, and the two ends of the U-shaped rod of the quick-connect assembly are passed through the two guide holes of the clamp body. Then, the two locking rings are respectively sleeved on the outer periphery of the two ends of the U-shaped rod, causing the locking block on the U-shaped rod to pass through the inlet and outlet of the locking ring and enter the arc-shaped locking groove of the locking ring. Then, the push plate is pushed to make the locking ring rotate. During the rotation of the locking ring, the guide inclined surface on the locking ring pushes the locking block relative to each other, causing the U-shaped rod to move. When the U-shaped rod moves, it pushes the pressure block to press the cable into the positioning channel. When the locking block slides relative to each other to the inner end of the arc-shaped locking groove, the cable connection is completed. This tension clamp has a simple structure and is easy to operate. It does not require rotating the bolts one by one, which can significantly reduce the consumption of manpower.

[0007] The present invention is further configured such that the arc-shaped locking groove includes a front guide portion, an inclined transition portion and a rear locking portion in sequence in the direction away from the inlet and outlet, the locking block is clearance-fitted with the front guide portion and interference-fitted with the rear locking portion.

[0008] By adopting the above technical solution, the locking ring can be fixed on the U-shaped rod during the process of the locking block rotating towards the inner end of the arc-shaped locking groove, thus preventing loosening and making the structure more reliable.

[0009] The present invention is further configured such that the end of the inlet and outlet away from the arc-shaped locking groove has an flared shape that is larger on the outside and smaller on the inside.

[0010] By adopting the above technical solution, the flared shape design of the outer end of the inlet and outlet makes it easier for the locking block to enter the inlet and outlet of the locking ring.

[0011] The present invention is further configured such that the outer periphery of both ends of the U-shaped rod is provided with slots, and the inner end of the locking block is interference-fitted into the corresponding slot.

[0012] By adopting the above technical solution, not only is the initial production process beneficial, but the subsequent assembly operation is also convenient.

[0013] The present invention is further provided that an elastic gasket is sandwiched between the clamp body and the locking ring.

[0014] By adopting the above technical solution, when the locking ring is pressed against the elastic pad, the elastic pad will also provide a reaction force to the quick-connect assembly, prompting the pressure block to better press the cable into the positioning channel of the cable body.

[0015] The present invention is further provided that the pressure block is provided with a positioning groove that matches the shape of the middle part of the U-shaped rod.

[0016] By adopting the above technical solution, the stability of the quick-connect component when locking the cable can be significantly improved.

[0017] The present invention is further configured such that the end of the pressure block near the positioning channel is provided with a guide groove with a polygonal cross-section, the inner end of the guide groove is provided with a screw hole communicating with the positioning groove, a silicone block is provided in the guide groove, and the outer wall of the silicone block is tightly fitted with the inner wall of the guide groove, and an internal hexagonal stud is threaded into the screw hole, the inner end of the internal hexagonal stud abutting against the inner end of the silicone block.

[0018] By adopting the above technical solution, the length of the pressure block can be finely adjusted. That is, by rotating the internal hexagonal stud, the silicone block is pushed outward by a small distance, so that it can better compress the cable. This structure can be adapted to cables of different diameters and has better versatility. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the U-shaped rod of this utility model;

[0021] Figure 3 This is a schematic diagram of the locking ring of this utility model;

[0022] Figure 4 This is a cross-sectional view of the locking ring of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the pressure block of this utility model;

[0024] Figure 6 This is a cross-sectional view of the pressure plate of this utility model.

[0025] In the diagram: 1. Cable clamp body; 2. Positioning channel; 3. Quick-connect assembly; 4. U-shaped rod; 5. Pressure block; 6. Locking ring; 7. Guide hole; 8. Locking block; 9. Push plate; 10. Arc-shaped locking groove; 11. Inlet and outlet; 12. Guide slope; 13. Front guide part; 14. Inclined transition part; 15. Rear locking part; 16. Slot; 17. Elastic washer; 18. Positioning groove; 19. Guide groove; 20. Screw hole; 21. Silicone block; 22. Socket headstock stud. Detailed Implementation

[0026] 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.

[0027] Example: As attached Figures 1-6The diagram illustrates a quick-connect tension clamp, comprising a clamp body 1 with a positioning channel 2 for cable positioning. The tension clamp also includes multiple sets of quick-connect components 3 for locking the cable within the positioning channel 2. In this embodiment, three sets of quick-connect components 3 are provided. Each quick-connect component 3 includes a U-shaped rod 4, a pressure block 5, and locking rings 6. The pressure block 5 is located on the side of the U-shaped rod 4 near the positioning channel 2. The clamp body 1 has guide holes 7 on both sides for the two ends of the U-shaped rod 4 to pass through. The U-shaped rod 4 has two locking blocks 8, and the number of locking rings 6 is two. Two locking rings 6 are respectively fitted around the outer periphery of both ends of the U-shaped rod 4. The outer periphery of the locking ring 6 is provided with a push plate 9, and the inner periphery of the locking ring 6 is provided with an arc-shaped locking groove 10. The end of the locking ring 6 near the wire clamp body 1 is provided with an inlet and outlet 11 that communicates with the front end of the arc-shaped locking groove 10. The part of the arc-shaped locking groove 10 that connects with the inlet and outlet 11 is provided with a guide slope 12. When the locking block 8 passes through the corresponding inlet and outlet 11 of the locking ring 6 and slides to the inner end of the arc-shaped locking groove 10, the locking ring 6 abuts against the wire clamp body 1, and the U-shaped rod 4 pushes the pressure block 5 to press the cable into the positioning channel 2. When fixing the cable, place the cable in the positioning channel 2 of the clamp body 1, pass the two ends of the U-shaped rod 4 of the quick-connect assembly 3 through the two guide holes 7 of the clamp body 1, and then put the two locking rings 6 on the outer circumference of the two ends of the U-shaped rod 4, so that the locking block 8 on the U-shaped rod 4 passes through the inlet and outlet 11 of the locking ring 6 and enters the arc-shaped locking groove 10 of the locking ring 6. Then push the push plate 9 to make the locking ring 6 rotate. During the rotation of the locking ring 6, the guide inclined surface 12 on the locking ring 6 pushes the locking block 8 relative to each other, so as to make the U-shaped rod 4 move. When the U-shaped rod 4 moves, it pushes the pressure block 5 to press the cable in the positioning channel 2. When the locking block 8 slides relative to each other to the inner end of the arc-shaped locking groove 10, the cable connection is completed. This tension clamp has a simple structure and is easy to operate. It does not require rotating the bolts one by one, which can significantly reduce the consumption of manpower.

[0028] As attached Figure 3 and attached Figure 4 As shown, the arc-shaped locking groove 10 includes a front guide portion 13, an inclined transition portion 14, and a rear locking portion 15 in sequence in the direction away from the inlet / outlet 11. The locking block 8 is clearance-fitted with the front guide portion 13, and the locking block 8 is interference-fitted with the rear locking portion 15. This design enables the locking block 8 to fix the locking ring 6 on the U-shaped rod 4 during the rotation of the locking block 8 towards the inner end of the arc-shaped locking groove 10, thus preventing loosening and making the structure more reliable.

[0029] As attached Figure 3 As shown, the end of the inlet / outlet 11 furthest from the arc-shaped locking groove 10 has a flared shape that is wider on the outside and narrower on the inside. The flared shape design at the outer end of the inlet / outlet 11 makes it easier for the locking block 8 to enter the inlet / outlet 11 of the locking ring 6.

[0030] As attached Figure 2 As shown, slots 16 are provided on the outer periphery of both ends of the U-shaped rod 4, and the inner end of the locking block 8 is interference-fitted into the corresponding slot 16. In this embodiment, both the slot 16 and the locking block 8 have circular cross-sections. This design not only facilitates early-stage production but also makes later assembly operations easier.

[0031] As attached Figure 1 As shown, an elastic washer 17 is sandwiched between the clamp body 1 and the locking ring 6. A circular groove for the elastic washer 17 to be inserted can be provided on the clamp body 1. The elastic washer 17 can be a rubber washer. When the locking ring 6 is pressed against the elastic washer 17, the elastic washer 17 will also provide a reaction force to the quick-connect assembly 3, causing the pressure block 5 to better press the cable into the positioning channel 2 of the cable body.

[0032] As attached Figure 5 As shown, the pressure block 5 is provided with a positioning groove 18 (arc-shaped) that matches the shape of the middle part of the U-shaped rod 4. This design can significantly improve the stability of the quick-connect assembly 3 when locking the cable.

[0033] As attached Figure 5 and attached Figure 6 As shown, the pressure block 5 has a polygonal cross-section guide groove 19 at one end near the positioning channel 2. A screw hole 20, communicating with the positioning groove 18, is opened at the inner end of the guide groove 19. A silicone block 21 is placed in the guide groove 19, and the outer wall of the silicone block 21 fits tightly with the inner wall of the guide groove 19. A hexagonal socket head cap screw 22 is threaded into the screw hole 20, and the inner end of the hexagonal socket head cap screw 22 abuts against the inner end of the silicone block 21. In this embodiment, both the silicone block 21 and the guide groove 19 have square cross-sections. This design allows for fine-tuning of the length of the pressure block 5; that is, by rotating the hexagonal socket head cap screw 22, the silicone block 21 is pushed outward by a small distance, allowing it to better compress the cable. This structure can adapt to cables of different diameters, offering better versatility.

Claims

1. A quick connect strain clamp comprising a clamp body (1) having a positioning channel (2) for cable positioning; characterized in that: Also include a plurality of groups for locking cable in the positioning channel (2) fast assembly (3), the fast assembly (3) includes U-shaped rod (4), pressing block (5) and locking ring (6), the pressing block (5) is arranged in U-shaped rod (4) near the side of positioning channel (2), the wire clamp body (1) both sides are provided with guide hole (7) for the two ends of the U-shaped rod (4) passes through, the U-shaped rod (4) is equipped with two locking blocks (8), the number of locking ring (6) is two, and two locking rings (6) are respectively set on the outer periphery of the two ends of the U-shaped rod (4), the outer periphery of the locking ring (6) is provided with a push plate (9), the inner periphery of the locking ring (6) is provided with an arc-shaped lock groove (10), one end of the locking ring (6) near the wire clamp body (1) is provided with an inlet and outlet (11) connected with the front end of the arc-shaped lock groove (10), the part where the arc-shaped lock groove (10) is connected with the inlet and outlet (11) is provided with a guide inclined surface (12), when the locking block (8) passes through the inlet and outlet (11) of the corresponding locking ring (6) and slides to the inner end of the arc-shaped lock groove (10), the locking ring (6) abuts tightly with the wire clamp body (1), and the U-shaped rod (4) pushes the pressing block (5) to press the cable in the positioning channel (2).

2. A strain clamp according to claim 1, wherein: The arc-shaped lock groove (10) includes a front end guide portion (13), an inclined transition portion (14) and a rear end locking portion (15) in sequence away from the inlet and outlet (11), the locking block (8) is in clearance fit with the front end guide portion (13), and the locking block (8) is in interference fit with the rear end locking portion (15).

3. A strain clamp according to claim 1, wherein: The end of the inlet and outlet (11) away from the arc-shaped lock groove (10) is in the shape of an expanding mouth with the outside larger than the inside.

4. The quick connect strain clamp of claim 1, wherein: The outer periphery of the two ends of the U-shaped rod (4) is provided with a slot (16), and the inner end of the locking block (8) is interference fit in the corresponding slot (16).

5. A strain clamp according to claim 1, wherein: The elastic gasket (17) is clamped between the wire clamp body (1) and the locking ring (6).

6. A strain clamp according to claim 1, wherein: The pressing block (5) is provided with a positioning groove (18) matched with the outer shape of the middle part of the U-shaped rod (4).

7. A strain clamp according to claim 6, wherein: The end of the pressing block (5) near the positioning channel (2) is provided with a guide groove (19) in the shape of a polygon in cross section, a screw hole (20) in communication with the positioning groove (18) is formed in the inner end of the guide groove (19), a silica gel block (21) is arranged in the guide groove (19), the outer wall of the silica gel block (21) is in close fit with the inner wall of the guide groove (19), and an inner hexagonal stud (22) is threadedly connected in the screw hole (20), and the inner end of the inner hexagonal stud (22) abuts tightly with the inner end of the silica gel block (21).

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