An adjustable diameter-reducing clamp for communication engineering

Abstract

This invention relates to the field of cable clamp technology, and mainly mentions an adjustable variable diameter clamp for communication engineering. It includes clamping jaws, each with arc-shaped grooves on both sides and slits on both sides. One side of each jaw has centrally symmetrically distributed limiting blocks. Each jaw has centrally symmetrically distributed limiting holes, and each limiting block has a limiting hole. The limiting holes of the limiting blocks communicate with the adjacent limiting holes of the jaws. Each jaw has centrally symmetrically distributed rectangular limiting grooves, and limiting posts are fixedly connected within the rectangular limiting grooves. An arc-shaped plate is fixedly connected within the arc-shaped grooves of the jaws. Each jaw has a splined blind hole, and a splined shell is splined into the blind hole. This invention utilizes the relative movement of the two jaws to clamp the cable, thereby achieving clamping and fixing of cables of different thicknesses while maintaining clamping force.

Description

Technical Field

[0001] This invention conforms to the field of cable clamp technology, specifically an adjustable variable diameter clamp for communication engineering. Background Technology

[0002] Communication cables are used to transmit electrical signals such as telephone, telegram, and television broadcast. Communication cables are divided into optical fiber cables and electrical cables. Communication cables usually need to be installed and fixed over long distances. When installing communication cables, clamps are used to fix one or more cables and fix them at a specified height or position.

[0003] Existing cable clamps simply fix cables using two C-shaped blocks. With the development of my country's communications industry, the types of cables are constantly increasing to suit different environments, and the sizes of cables are also increasing. Existing clamps on the market are mostly suitable for fixed sizes or smaller sizes, which means that rubber rings need to be added during use to accommodate different cable sizes. This is not only cumbersome to operate and greatly limits the clamping range of the clamps, but also reduces the efficiency of fixing cables. Summary of the Invention

[0004] To overcome the shortcomings of existing cable clamps that cannot adapt to cables of different diameters, this invention provides an adjustable variable diameter clamp for communication engineering.

[0005] The technical implementation of the present invention is as follows: An adjustable diameter clamp for communication engineering includes a clamping jaw, with arc-shaped grooves on both sides of the clamping jaw. The arc-shaped grooves of the clamping jaw are cable clamping areas and are used to fix the cable. Cutouts are provided on both sides of the clamping jaw. A centrally symmetrically distributed limiting block is provided on one side of the clamping jaw. The clamping jaw has centrally symmetrically distributed limiting holes. The limiting block has a limiting hole, and the limiting hole of the limiting block communicates with the limiting hole adjacent to the clamping jaw. A centrally symmetrically distributed rectangular limiting groove is provided on one side of the clamping jaw. A limiting post is fixedly connected in the rectangular limiting groove of the clamping jaw. An arc-shaped plate is fixedly connected in the arc-shaped groove of the clamping jaw. A spline blind hole is provided on the side of the clamping jaw away from the limiting block, and a spline shell is splined into the spline blind hole of the clamping jaw.

[0006] Furthermore, the gripper has a symmetrical stepped surface on the side away from the limiting block, which facilitates the installation and removal of adjacent grippers.

[0007] Furthermore, a reinforcing rib is provided on the side of the gripper away from the limiting block to enhance the structural strength of the area where the gripper clamps the cable.

[0008] Furthermore, both the middle part of the spline shell and the middle part of the jaws are provided with through holes for installing nuts, and a serrated limiting groove is provided on the side of the spline shell away from the adjacent jaws for limiting the mutual positioning between adjacent spline shells.

[0009] Furthermore, it also includes an auxiliary fixing mechanism, which is disposed between the arc-shaped plate and the gripper. The auxiliary fixing mechanism is used to increase the fixing strength of the cable. The auxiliary fixing mechanism includes a sliding plate. An annular groove is provided on the side of the splined shell near the adjacent gripper. The sliding plate is slidably connected to the annular groove of the splined shell. A first elastic element is fixed between the sliding plate and the splined shell. Asymmetrical limiting grooves are respectively provided on the inner sides of the two arc-shaped grooves of the gripper. A rectangular blind hole is provided in the middle of the gripper. The through hole of the gripper and the rectangular blind hole... The holes are interconnected. A pull rope is provided in the limiting groove of the gripper. One end of the pull rope is fixed to the gripper, and the other end of the pull rope passes through the gripper and is located in a rectangular blind hole. A symmetrical first telescopic rod is fixed in the rectangular blind hole of the gripper. The telescopic end of the first telescopic rod is fixed to the adjacent pull rope through a mounting plate. A symmetrical second telescopic rod is embedded in the rectangular blind hole of the gripper. The telescopic end of the second telescopic rod is fixed to the sliding plate. An oil guide pipe is connected between the second telescopic rod and the adjacent first telescopic rod. Hydraulic oil is injected between the second telescopic rod and the adjacent oil guide pipe.

[0010] Furthermore, the pull rope is a non-elastic steel wire rope, and the pull rope is used to locally compress the outer surface of the cable.

[0011] Furthermore, the arc-shaped plate is made of elastic rubber, and the elastic force of the first elastic element is greater than the elastic force of the arc-shaped plate itself, in order to ensure the squeezing force of the pull rope on the cable.

[0012] Furthermore, it also includes a compression mechanism, which is disposed on both sides of the gripper. The compression mechanism is used to compress the cable. The compression mechanism includes symmetrical first fixed shells, which are fixed to both sides of the gripper. Symmetrical first piston rods are slidably connected inside the first fixed shells. Symmetrical mounting seats are fixed to both sides of the gripper. Compression blocks are slidably connected to the mounting seats of the gripper. The compression blocks are provided with blind holes. Sliding rods are slidably connected inside the blind holes of the compression blocks. A second elastic element is fixed between the sliding rod and the adjacent compression block. The sliding rod is fixed to the adjacent first piston rod through a connecting frame. A symmetrical second fixed shell is embedded on the side of the gripper away from the limiting block. A second piston rod is slidably connected inside the second fixed shell. A third elastic element is fixed between the second piston rod and the adjacent second fixed shell. An oil guide pipe communicates between the second fixed shell and the adjacent first fixed shell. A fixing ring is fixed to the spline shell. The second piston rod is fixed to the fixing ring on the adjacent spline shell. Hydraulic oil is injected into both the second fixed shell and the adjacent oil guide pipe.

[0013] Furthermore, the inner wall of the first fixed shell is provided with symmetrical limiting rings, which are used to limit the adjacent first piston rods.

[0014] Furthermore, the extrusion block is made of soft rubber and one side is curved to increase the contact area between the extrusion block and the cable.

[0015] Compared with the prior art, it has the following advantages: 1. The present invention uses the relative movement of two jaws to clamp the cable, thereby clamping and fixing cables of different thicknesses and maintaining clamping force. At the same time, by rotating the two nuts on the screw, multiple cables of different diameters can be fixed at the same time, which improves the efficiency of cable fixing.

[0016] 2. This invention utilizes the tension of the pull rope to act on the outside of adjacent cables, assisting two adjacent clamps in fixing the cables, thereby improving the fixing strength of the cables and reducing the probability of the cables sliding between the two cooperating clamps.

[0017] 3. The present invention utilizes the extrusion block to compress and adhere to adjacent cables, providing lateral support for the fixed cables. This not only increases the lateral extrusion force between the cables and the two adjacent clamps, but also provides some friction for the cables through the extrusion block, further improving the stability of the cables in the two adjacent clamps. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2This is a three-dimensional structural diagram of the gripper and spline shell and other parts of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the limiting block and limiting post of the present invention;

[0021] Figure 4 This is a three-dimensional structural diagram of the gripper and limiting block and other parts of the present invention;

[0022] Figure 5 This is a three-dimensional structural diagram of the gripper and arc-shaped plate components of the present invention;

[0023] Figure 6 This is a side-view perspective structural diagram of the gripper and spline shell and other parts of the present invention;

[0024] Figure 7 This is a cross-sectional perspective view of the gripper and the arc-shaped plate of the present invention.

[0025] Figure 8 This is a cross-sectional perspective view of the spline shell of the present invention.

[0026] Figure 9 This is a three-dimensional structural diagram of the spline shell and the first elastic element of the present invention.

[0027] Figure 10 This is a three-dimensional structural diagram of the first and second fixed shells and other parts of the present invention;

[0028] Figure 11 This is a three-dimensional structural diagram of the extrusion block and sliding rod of the present invention;

[0029] Figure 12 This is a cross-sectional perspective view of the first fixing shell, the extrusion block, and the second fixing shell of the present invention.

[0030] Reference numerals: 1. Gripper, 2. Limiting block, 3. Limiting post, 4. Arc plate, 5. Splined shell, 6. Sliding plate, 7. First elastic element, 8. Pull rope, 9. First telescopic rod, 10. Second telescopic rod, 11. First fixed shell, 12. First piston rod, 13. Pressing block, 14. Sliding rod, 15. Second elastic element, 16. Second fixed shell, 17. Second piston rod, 18. Third elastic element. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0032] Research has revealed that existing cable clamps on the market are mostly suitable for fixed or smaller sizes, necessitating the addition of rubber rings to accommodate different cable dimensions during use, thus significantly limiting the clamping range. The following implementation method is adopted to overcome these problems.

[0033] Example 1: An adjustable diameter clamp for communication engineering, such as... Figures 1-6 As shown, the device includes grippers 1, with arc-shaped grooves on both sides of each gripper 1. These arc-shaped grooves serve as cable clamping areas, used to secure the cables. Two adjacent grippers 1 cooperate to simultaneously secure two cables. Each gripper 1 has slits on both sides. When two grippers 1 cooperate to secure the cables, the slits on the same side of the two grippers 1 intersect. Two centrally symmetrically distributed limiting blocks 2 are provided on opposite sides of the two cooperating grippers 1. Each gripper 1 has two centrally symmetrically distributed limiting holes, and each limiting block 2 has a limiting hole. The limiting holes of the limiting blocks 2 communicate with the adjacent limiting holes of the grippers 1. On opposite sides, there are rectangular limiting grooves symmetrically distributed in the center. A limiting post 3 is fixedly connected in the rectangular limiting groove of the gripper 1. An arc plate 4 is fixedly connected in the arc groove of the gripper 1. A spline blind hole is provided in the middle of the gripper 1. A spline shell 5 is splined in the spline blind hole of the gripper 1. A symmetrical stepped surface is provided on the side of the gripper 1 away from the limiting block 2 to facilitate the installation and disassembly of adjacent grippers 1. A reinforcing rib is provided on the outside of the gripper 1 to enhance the structural strength of the area where the gripper 1 clamps the cable and prevent the gripper 1 from deforming when fixing the cable. A through hole for installing a nut is provided in the middle of the spline shell 5 and the middle of the gripper 1. A serrated limiting groove is provided on the top of the spline shell 5 to limit the mutual positioning between adjacent spline shells 5.

[0034] When securing the communication cables, the worker places two cables into the two arc-shaped grooves of clamp 1, then removes one clamp 1 and rotates it so that it clamps onto the outside of the two cables. At this point, the lower limiting post 3 is inserted into the limiting hole of the upper limiting block 2, and the limiting post 3 of the upper clamp 1 is also inserted into the limiting hole of the lower clamp 1 limiting block 2. The limiting post 3 engages with the limiting hole of the upper limiting block 2 of the adjacent clamp 1. This process is repeated to secure all six cables. The worker then inserts a screw into the through hole of clamp 1 (see attached diagram). Figure 1(As shown in the above state), in this state, two adjacent and contacting spline shells 5 are limited and engaged by their serrated limiting grooves. The operator rotates the nuts on the upper and lower sides of the screw using a tool, and the two nuts move closer to each other. The uppermost and lowermost spline shells 5 are squeezed by the adjacent nuts respectively. At this time, each spline shell 5 retracts inward along the spline blind hole on the adjacent jaw 1 until the spline shell 5 is completely retracted into the spline blind hole on the adjacent jaw 1. During the above process, the cable diameter between the two adjacent jaws 1 is small, the cuts on both sides of the two mating jaws 1 are intersecting, and the two mating jaws 1 move closer to each other. The arc-shaped groove on the inner side of the jaw 1... Plate 4 is attached to the outside of the cable, and the two cooperating jaws 1 continue to move closer together, thereby clamping the cable between the two jaws 1. As the two nuts are tightened, the squeezing force of the splined shell 5 on the adjacent jaws 1 gradually increases, and the squeezing force on the cable between the two jaws 1 also increases. When the two nuts are turned to the designated position, the operator stops turning the nuts and uses the relative movement of the two jaws 1 to clamp the cable, thereby achieving the clamping and fixing of cables of different thicknesses and maintaining the clamping force. At the same time, by turning the two nuts on the screw, multiple cables of different diameters can be fixed at the same time, improving the efficiency of cable fixing.

[0035] Existing cable clamps apply clamping force to secure cables. However, research has shown that after prolonged clamping, the cable insulation undergoes plastic deformation due to prolonged compression, leading to a decrease in the clamping force between the clamp and the cable, posing a risk of cable slippage along the clamp. The following implementation method overcomes these problems.

[0036] Example 2: Based on Example 1, such as Figures 7-8As shown, it also includes an auxiliary fixing mechanism, which is located between the arc-shaped plate 4 and the clamp 1. The auxiliary fixing mechanism is used to increase the fixing strength of the cable. The auxiliary fixing mechanism includes a sliding plate 6. The center of the spline shell 5 is provided with an annular groove. The sliding plate 6 is slidably connected to the annular groove of the spline shell 5. A first elastic element 7 is fixed between the sliding plate 6 and the spline shell 5. The first elastic element 7 is a spring and is located in the annular groove of the spline shell 5. The inner sides of the two arc-shaped grooves of the clamp 1 are respectively provided with asymmetrical limiting grooves. One arc-shaped groove of the clamp 1 has one limiting groove, and the other arc-shaped groove has two limiting grooves. A rectangular blind hole is provided in the middle of the clamp 1. The through hole of the clamp 1 communicates with the rectangular blind hole. A pull rope 8 is provided in the limiting groove of the clamp 1. The pull rope 8 is a non-elastic steel wire rope. The pull rope 8 is used to locally compress the outer surface of the cable to improve the fixing strength of the cable. The outer ends of the left and right adjacent pull ropes 8 are connected to the clamp. The claw 1 is fixedly connected. The inner ends of the adjacent pull ropes 8 pass through the claw 1 and are located in the rectangular blind hole. Two symmetrical first telescopic rods 9 are fixedly connected in the rectangular blind hole of the claw 1. The first telescopic rods 9 are existing ordinary hydraulically driven telescopic rods. The telescopic ends of the first telescopic rods 9 are fixedly connected to the adjacent pull ropes 8 through the mounting plate. The telescopic ends of the first telescopic rods 9 extend out, making the adjacent pull ropes 8 taut. Two symmetrical second telescopic rods 10 are embedded in the rectangular blind hole of the claw 1. The second telescopic rods 10 are existing ordinary hydraulically driven telescopic rods. The telescopic ends of the second telescopic rods 10 are fixedly connected to the sliding plate 6. There is an oil guide pipe connecting the second telescopic rods 10 and the adjacent first telescopic rods 9. Hydraulic oil is injected between the second telescopic rods 10 and the adjacent oil guide pipes. The arc plate 4 is made of elastic rubber. The arc plate 4 is used to increase the friction between the claw 1 and the cable. The elastic force of the first elastic element 7 is greater than the elastic force of the arc plate 4 itself, which is used to ensure the squeezing force of the pull rope 8 on the cable. When the pull rope 8 is taut, the arc plate 4 will deform.

[0037] During the rotation of the two nuts, the splined shell 5 slides along the splined blind hole of the adjacent clamp 1. Initially, the extension rod of the second telescopic rod 10 is in the extended state. When the splined shell 5 moves, the splined shell 5 drives the sliding plate 6 to move synchronously through the first elastic element 7. The sliding plate 6 squeezes the two adjacent second telescopic rods 10, and the extension end of the second telescopic rod 10 retracts inward. The hydraulic oil in the second telescopic rod 10 flows into the adjacent first telescopic rod 9 along the oil guide pipe. The extension end of the first telescopic rod 9 extends outward. The extension end of the first telescopic rod 9 pulls the adjacent pull rope 8 through the mounting plate. As the pull rope 8 is gradually tightened, the pull rope 8 will squeeze the adjacent arc plate 4. The part of the arc plate 4 that is squeezed will deform. The deformed part of the arc plate 4 acts on the outside of the cable.

[0038] As the splined shell 5 moves along the spline blind holes of the adjacent clamping jaws 1, the two cooperating clamping jaws 1 have already come into contact with and clamped the outside of the cable. As the operator rotates the two nuts, the splined shell 5 continues to move along the spline blind holes of the adjacent clamping jaws 1. After the pull rope 8 is tightened and squeezed against the adjacent cable, the extension end of the first telescopic rod 9 stops extending, and the second telescopic rod 10 also stops retracting inward. The extension ends of the two adjacent second telescopic rods 10 then limit the adjacent sliding plate 6. As the splined shell 5 moves, the sliding plate 6 moves along the spline blind holes of the adjacent splined shell 5. As the inner wall slides, the first elastic element 7 is gradually compressed. When the first elastic element 7 is compressed, its elastic force acts on the telescopic ends of the two adjacent second telescopic rods 10 through the sliding plate 6. The elastic force of the first elastic element 7 when compressed acts on the adjacent pull rope 8, so that the tension of the pull rope 8 acts on the outside of the adjacent cable, which assists the two adjacent clamps 1 in fixing the cable, improving the fixing strength of the cable and reducing the probability of the cable sliding in the two cooperating clamps 1 (the spline shell 5 located on the upper and lower sides is squeezed by the adjacent nuts).

[0039] When it is necessary to release the cable, the worker removes two nuts, and the two adjacent nuts gradually lose their compression. Under the elastic force of the first elastic element 7, the spline shell 5 slides along the spline blind hole of the adjacent jaw 1. The first elastic element 7 and the adjacent spline shell 5 gradually reset, and the pull rope 8 loses tension (loses the compression of the cable). At the same time, under the elastic force of the arc plate 4 itself, the arc plate 4 pushes the adjacent pull rope 8 back to its initial position. At the same time, when the pull rope 8 resets, the pull rope 8 pulls the extension end of the adjacent first telescopic rod 9 through the mounting plate. The extension end of the first telescopic rod 9 resets accordingly. At the same time, the hydraulic oil in the first telescopic rod 9 also flows into the adjacent second telescopic rod 10 through the oil guide pipe, so that the extension end of the second telescopic rod 10 resets. The worker removes the screw from the through hole in the middle of the multiple jaws 1, and then disassembles the jaws 1 one by one to release the cable.

[0040] Example 3: Based on Example 2, such as Figure 3 , Figures 10-12As shown, it also includes a compression mechanism, which is located on the front and rear sides of the gripper 1. The compression mechanism is used to compress the cable. The compression mechanism includes two symmetrical first fixed shells 11, which are fixed to the front and rear sides of the gripper 1 by mounting seats. Two symmetrical first piston rods 12 are slidably connected inside the first fixed shell 11. The first piston rods 12 are sealed to the adjacent first fixed shells 11. Two symmetrical mounting seats are fixed to the front and rear sides of the gripper 1. A compression block 13 is slidably connected to the mounting seat of the gripper 1. The compression block 13 is a soft rubber block with an arc-shaped surface on the side near the cable to increase the contact area between the compression block 13 and the cable, improve the lateral compression force between the cable and the gripper 1, and provide some friction to the cable. The compression block 13 is provided with a blind hole. A sliding rod 14 is slidably connected inside the blind hole of the compression block 13. A second elastic element 15 is fixed between the sliding rod 14 and the adjacent compression block 13. The second elastic element 15 is a spring and is located inside the blind hole of the compression block 13. The sliding rod 14 and the adjacent first... The piston rods 12 are fixedly connected by a connecting bracket. Two symmetrical second fixed shells 16 are embedded on opposite sides of the two cooperating jaws 1. A second piston rod 17 is slidably connected inside each second fixed shell 16. The second piston rod 17 is sealed to the adjacent second fixed shell 16. A third elastic element 18 is fixedly connected between the second piston rod 17 and the adjacent second fixed shell 16. An oil guide pipe connects the second fixed shell 16 to the adjacent first fixed shell 11. The oil guide pipe between the second fixed shell 16 and the adjacent first fixed shell 11 is embedded in... A fixed ring is fixedly connected to the splined shell 5 through the adjacent gripper 1. The second piston rod 17 is fixedly connected to the fixed ring on the adjacent splined shell 5. Hydraulic oil is filled into the second fixed shell 16 and the adjacent oil guide pipe. Two symmetrical limiting rings are provided on the inner wall of the first fixed shell 11. The limiting rings in the first fixed shell 11 are used to limit the adjacent first piston rods 12, ensuring that there is a gap between the opposite ends of the two adjacent first piston rods 12, so that hydraulic oil can be injected between the two adjacent first piston rods 12 and push the two adjacent first piston rods 12 to move.

[0041] When the operator tightens the two nuts, the splined shell 5 drives the retaining ring on it to slide along the spline blind hole of the adjacent gripper 1. The retaining ring on the splined shell 5 will squeeze the two adjacent second piston rods 17. The second piston rods 17 move downward along the adjacent second fixed shell 16. The second piston rods 17 squeeze the hydraulic oil in the adjacent second fixed shell 16, and the third elastic element 18 is compressed. The hydraulic oil in the second fixed shell 16 flows into the adjacent first fixed shell 11 along the adjacent oil guide pipe. The hydraulic oil injected into the first fixed shell 11 pushes the two adjacent first piston rods 12 to move away from each other. The first piston rods 12 drive the adjacent sliding rods 14 to move synchronously through the connecting frame. Initially, the sliding rods 14 drive the adjacent pressing blocks 13 to move through the adjacent second elastic elements 15 until the pressing blocks 13 press against the adjacent cable. As the splined shell 5 drives the phase As the adjacent second piston rod 17 continues to move, the hydraulic oil in the second fixed housing 16 continues to be injected into the adjacent first fixed housing 11. Since the extrusion block 13 has already extruded and adhered to the adjacent cable, when the first piston rod 12 continues to drive the adjacent sliding rod 14 to move, the sliding rod 14 extrudes the adjacent second elastic element 15. The second elastic element 15 is compressed, and the force during the compression process of the second elastic element 15 acts on the extrusion block 13, so that the extrusion block 13 always extrudes and adheres to the adjacent cable until the spline housing 5 stops moving along the spline blind hole of the adjacent jaw 1. By using the extrusion block 13 to extrude and adhere to the adjacent cable, lateral support force is provided for the fixed cable. This not only increases the lateral extrusion force between the cable and the two adjacent jaws 1, but also provides some friction force for the cable, further improving the fixing stability of the cable in the two adjacent jaws 1.

[0042] When disassembling the cable, the worker turns two nuts, and then the splined shell 5 resets along the spline blind hole of the adjacent gripper 1. The splined shell 5 drives the two adjacent second piston rods 17 to reset through the fixing ring. At the same time, the third elastic element 18 resets, and the hydraulic oil in the first fixing shell 11 flows back to the adjacent second fixing shell 16. Subsequently, the two adjacent first piston rods 12 on the first fixing shell 11 move closer to each other and reset. Then, the sliding rod 14 drives the adjacent pressing block 13 to reset through the adjacent second elastic element 15. The pressing block 13 no longer presses the adjacent cable.

[0043] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. An adjustable variable diameter clamp for communication engineering, characterized in that, The device includes a clamp (1), with arc-shaped grooves on both sides of the clamp (1). The arc-shaped grooves of the clamp (1) are the clamping area for the cable, and are used to fix the cable. Both sides of the clamp (1) have slits. One side of the clamp (1) has centrally symmetrically distributed limiting blocks (2). The clamp (1) has centrally symmetrically distributed limiting holes, and the limiting blocks (2) have limiting holes. The limiting hole of the position block (2) is connected to the limiting hole adjacent to the gripper (1). A rectangular limiting groove is provided on one side of the gripper (1) with central symmetry. A limiting post (3) is fixed in the rectangular limiting groove of the gripper (1). An arc plate (4) is fixed in the arc groove of the gripper (1). A spline blind hole is provided on the side of the gripper (1) away from the limiting block (2). A spline shell (5) is splined in the spline blind hole of the gripper (1). It also includes an auxiliary fixing mechanism, which is disposed between the arc plate (4) and the clamp (1). The auxiliary fixing mechanism is used to increase the fixing strength of the cable. The auxiliary fixing mechanism includes a sliding plate (6). The spline shell (5) is provided with an annular groove on the side near the adjacent clamp (1). The sliding plate (6) is slidably connected in the annular groove of the spline shell (5). A first elastic element (7) is fixed between the sliding plate (6) and the spline shell (5). The inner sides of the two arc grooves of the clamp (1) are respectively provided with asymmetrical limiting grooves. A rectangular blind hole is provided in the middle of the clamp (1). The through hole of the clamp (1) communicates with the rectangular blind hole. A pull rope (8) is provided in the limiting groove of the clamp (1). One end of the pull rope (8) is fixedly connected to the clamp (1), and the other end of the pull rope (8) passes through the clamp (1) and is located in the rectangular blind hole. A symmetrical first telescopic rod (9) is fixedly connected in the rectangular blind hole of the clamp (1). The telescopic end of the first telescopic rod (9) is fixedly connected to the adjacent pull rope (8) through the mounting plate. A symmetrical second telescopic rod (10) is embedded in the rectangular blind hole of the clamp (1). The telescopic end of the second telescopic rod (10) is fixedly connected to the sliding plate (6). An oil guide pipe is connected between the second telescopic rod (10) and the adjacent first telescopic rod (9). Hydraulic oil is injected between the second telescopic rod (10) and the adjacent oil guide pipe.

2. The adjustable diameter clamp for communication engineering according to claim 1, characterized in that, The gripper (1) has a symmetrical stepped surface on the side away from the limiting block (2), which facilitates the installation and removal of adjacent grippers (1).

3. The adjustable diameter clamp for communication engineering according to claim 2, characterized in that, The gripper (1) is provided with a reinforcing rib on the side away from the limiting block (2) to enhance the structural strength of the area where the gripper (1) clamps the cable.

4. The adjustable diameter clamp for communication engineering according to claim 3, characterized in that, Both the middle part of the spline shell (5) and the middle part of the jaw (1) are provided with through holes for installing nuts. The spline shell (5) is provided with a serrated limiting groove on the side away from the adjacent jaw (1) for limiting the mutual positioning between adjacent spline shells (5).

5. The adjustable diameter clamp for communication engineering according to claim 4, characterized in that, The pull rope (8) is a non-elastic steel wire rope, and the pull rope (8) is used to locally compress the outer surface of the cable.

6. The adjustable diameter clamp for communication engineering according to claim 5, characterized in that, The arc plate (4) is made of elastic rubber, and the elastic force of the first elastic element (7) is greater than the elastic force of the arc plate (4) itself, so as to ensure the squeezing force of the pull rope (8) on the cable.

7. The adjustable diameter clamp for communication engineering according to claim 6, characterized in that, It also includes a compression mechanism, which is disposed on both sides of the gripper (1). The compression mechanism is used to compress the cable. The compression mechanism includes a symmetrical first fixed shell (11), which is fixed to both sides of the gripper (1). A symmetrical first piston rod (12) is slidably connected inside the first fixed shell (11). A symmetrical mounting seat is fixed to both sides of the gripper (1). A compression block (13) is slidably connected to the mounting seat of the gripper (1). The compression block (13) is provided with a blind hole. A sliding rod (14) is slidably connected inside the blind hole of the compression block (13). A second elastic element (15) is fixed between the sliding rod (14) and the adjacent compression block (13). The sliding rod (14) is fixedly connected to the adjacent first piston rod (12) by a connecting frame. The gripper (1) is embedded with a symmetrical second fixed shell (16) on the side away from the limiting block (2). The second piston rod (17) is slidably connected in the second fixed shell (16). The second piston rod (17) is fixedly connected to the adjacent second fixed shell (16) by a third elastic element (18). The second fixed shell (16) is connected to the adjacent first fixed shell (11) by an oil guide pipe. The spline shell (5) is fixedly connected with a fixing ring. The second piston rod (17) is fixedly connected to the fixing ring on the adjacent spline shell (5). The second fixed shell (16) and the adjacent oil guide pipe are filled with hydraulic oil.

8. The adjustable diameter clamp for communication engineering according to claim 7, characterized in that, The inner wall of the first fixed shell (11) is provided with symmetrical limiting rings, and the limiting rings in the first fixed shell (11) are used to limit the adjacent first piston rod (12).

9. The adjustable diameter clamp for communication engineering according to claim 8, characterized in that, The extrusion block (13) is a soft rubber block with one side having an arc-shaped surface, which is used to increase the contact area between the extrusion block (13) and the cable.

Images