Adjustable reducing clamp for communication engineering

Abstract

The invention relates to the technical field of cable clamps, and mainly relates to an adjustable reducing clamp for communication engineering. Comprising a clamping jaw, arc-shaped grooves are formed in the two sides of the clamping jaw, notches are formed in the two sides of the clamping jaw, limiting blocks which are distributed in a central symmetry mode are arranged on one side of the clamping jaw, limiting holes which are distributed in a central symmetry mode are formed in the clamping jaw, and limiting holes are formed in the limiting blocks. The limiting holes of the limiting blocks are communicated with the adjacent limiting holes of the clamping jaws, the clamping jaws are provided with rectangular limiting grooves distributed in a central symmetry mode, limiting columns are fixedly connected into the rectangular limiting grooves of the clamping jaws, arc-shaped plates are fixedly connected into arc-shaped grooves of the clamping jaws, the clamping jaws are provided with spline blind holes, and the spline blind holes are communicated with the limiting columns. And a spline shell is in spline connection in the spline blind hole of the clamping jaw. According to the cable clamping device, the cable is clamped through relative movement of the two clamping jaws, so that the cables with different thicknesses are clamped and fixed, and the clamping force is kept.

Description

Technical Field

[0001] The invention complies with the technical field of cable clamps, and in particular relates to an adjustable diameter-changing clamp for communication engineering. Background Art

[0002] Communication cables are suitable for transmitting electrical signals such as telephone, telegraph, and television broadcasting. Communication cables are divided into communication optical cables and communication electrical cables. Communication cables usually need to be installed and fixed over long distances. When installing communication cables, clamps are used to fix single or multiple cables and fix the cables at a specified height or position.

[0003] The existing cable clamps simply fix the cables through two C-shaped blocks. With the development of my country's communication industry, in order to adapt to different environments, the types of cables are also increasing. The sizes of cables are numerous. The existing market clamps are mostly suitable for fixed sizes or smaller sizes, resulting in the need to add rubber rings to adapt to different sizes of cables during use. Not only is the operation cumbersome, it also greatly limits the clamping range of the clamp and reduces the fixing efficiency of the cable. Summary of the invention

[0004] In order to overcome the shortcoming that the existing cable clamp cannot adapt to cables with different diameters, the present invention provides an adjustable diameter-changing clamp for communication engineering.

[0005] The technical implementation scheme of the present invention is: an adjustable reducer clamp for communication engineering, comprising a clamping jaw, arc-shaped grooves are provided on both sides of the clamping jaw, the arc-shaped grooves of the clamping jaw are the clamping areas of the cables, the arc-shaped grooves of the clamping jaw are used to fix the cables, cutouts are provided on both sides of the clamping jaw, a centrally symmetrically distributed limit block is provided on one side of the clamping jaw, the clamping jaw is provided with centrally symmetrically distributed limit holes, the limit block is provided with limit holes, the limit holes of the limit block are connected with the limit holes adjacent to the clamping jaw, a centrally symmetrically distributed rectangular limit groove is provided on one side of the clamping jaw, a limit column is fixedly connected in the rectangular limit groove of the clamping jaw, an arc 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 limit block, and a spline shell is splined in the spline blind hole of the clamping jaw.

[0006] Furthermore, a symmetrical step surface is provided on one side of the clamping jaw away from the limiting block to facilitate installation and disassembly of adjacent clamping jaws.

[0007] Furthermore, a reinforcing rib is provided on a side of the clamping jaw away from the limiting block, so as to enhance the structural strength of the cable clamping area of ​​the clamping jaw.

[0008] Furthermore, a through hole for installing a nut is provided in the middle of the spline shell and the middle of the clamping jaw, and a serrated limiting groove is provided on the side of the spline shell away from the adjacent clamping jaw for limiting the mutual position between the adjacent spline shells.

[0009] Furthermore, an auxiliary fixing mechanism is included, which is arranged between the arc plate and the clamping jaw, and is used to increase the fixing strength of the cable. The auxiliary fixing mechanism includes a sliding plate, and an annular groove is arranged on one side of the spline shell adjacent to the clamping jaw. The sliding plate is slidably connected to the annular groove of the spline shell, and a first elastic member is fixedly connected between the sliding plate and the spline shell. The inner sides of the two arc grooves of the clamping jaw are respectively provided with asymmetric limiting grooves, and a rectangular blind hole is arranged in the middle of the clamping jaw. The through hole of the clamping jaw is connected to the rectangular blind hole. The holes are connected, a pull rope is arranged in the limiting groove of the clamp, one end of the pull rope is fixedly connected to the clamp, the other end of the pull rope passes through the clamp and is located in the rectangular blind hole, a symmetrical first telescopic rod is fixedly connected in the rectangular blind hole of the clamp, the telescopic end of the first telescopic rod is fixedly connected to the adjacent pull rope through a mounting plate, a symmetrical second telescopic rod is embedded in the rectangular blind hole of the clamp, the telescopic end of the second telescopic rod is fixedly connected to the sliding plate, an oil guide pipe is connected between the second telescopic rod and the adjacent first telescopic rod, and hydraulic oil is filled between the second telescopic rod and the adjacent oil guide pipe.

[0010] Furthermore, the pull rope is a steel wire rope without elastic force, and the pull rope is used to squeeze a part of the outer surface of the cable.

[0011] Furthermore, the arc-shaped plate is configured as elastic rubber, and the elastic force of the first elastic member is greater than the elastic force of the arc-shaped plate itself, so as to ensure the squeezing force of the pull rope on the cable.

[0012] Further, it also includes an extrusion mechanism, which is arranged on both sides of the clamping jaw, and is used to extrude the cable. The extrusion mechanism includes a symmetrical first fixed shell, the symmetrical first fixed shell is fixedly connected to both sides of the clamping jaw, and a symmetrical first piston rod is slidably connected in the first fixed shell, and symmetrical mounting seats are fixedly connected to both sides of the clamping jaw, and the mounting seat of the clamping jaw is slidably connected with an extrusion block, and the extrusion block is provided with a blind hole, and a sliding rod is slidably connected in the blind hole of the extrusion block, and a second elastic member is fixedly connected between the sliding rod and the adjacent extrusion block, and the sliding rod is fixedly connected to the adjacent first piston rod through a connecting frame, and a symmetrical second fixed shell is embedded on the side of the clamping jaw away from the limit block, and a second piston rod is slidably connected in the second fixed shell, and a third elastic member is fixedly connected between the second piston rod and the adjacent second fixed shell, and an oil guide pipe is connected between the second fixed shell and the adjacent first fixed shell, and a fixing ring is fixedly connected to the spline shell, and the second piston rod is fixedly connected to the fixing ring on the adjacent spline shell, and the second fixed shell and the adjacent oil guide pipe are both filled with hydraulic oil.

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

[0014] Furthermore, the extrusion block is configured as a soft rubber block and one side thereof is configured as an arc-shaped surface, so as to increase the fitting area between the extrusion block and the cable.

[0015] Compared with the prior art, the present invention has the following advantages: 1. The present invention utilizes the relative movement of two clamping jaws to clamp the cable, thereby achieving clamping and fixing of cables of different thicknesses and maintaining the 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, thereby improving the work efficiency of cable fixing.

[0016] 2. The present invention utilizes the tensioning force of the pull rope to act on the outer sides of adjacent cables, assisting two adjacent clamping claws to fix the cables, thereby improving the fixing strength of the cables and reducing the probability of the cables sliding in the two mutually cooperating clamping claws.

[0017] 3. The present invention utilizes an extrusion block to extrude and fit adjacent cables, thereby providing lateral support force for the fixed cables. This not only increases the lateral extrusion force between the cables and the two adjacent clamps, but also the extrusion block provides partial friction force for the cables, thereby further improving the fixing stability of the cables between the two adjacent clamps. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2It is a three-dimensional structural schematic diagram of parts such as the clamping jaw and the spline housing of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the parts such as the limit block and the limit column of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of parts such as the clamping jaws and the limit block of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the clamping jaws and arc-shaped plates and other parts of the present invention; Figure 6 It is a side view stereoscopic structural diagram of the clamping jaws and spline housing and other parts of the present invention; Figure 7 It is a schematic diagram of the cross-sectional three-dimensional structure of the clamping jaw and the arc-shaped plate of the present invention; Figure 8 It is a schematic diagram of the cross-sectional three-dimensional structure of the spline housing of the present invention; Fig. 9 It is a three-dimensional structural schematic diagram of parts such as the spline housing and the first elastic member of the present invention; Fig.10 It is a three-dimensional structural schematic diagram of the first fixed shell and the second fixed shell and other parts of the present invention; Fig.11 It is a three-dimensional structural schematic diagram of parts such as an extrusion block and a sliding rod of the present invention; Fig.12 It is a schematic diagram of the cross-sectional three-dimensional structure of the first fixed shell, the extrusion block and the second fixed shell of the present invention.

[0019] Figure numerals: 1. clamping claw, 2. limiting block, 3. limiting column, 4. arc plate, 5. spline shell, 6. sliding plate, 7. first elastic member, 8. pull rope, 9. first telescopic rod, 10. second telescopic rod, 11. first fixed shell, 12. first piston rod, 13. extrusion block, 14. sliding rod, 15. second elastic member, 16. second fixed shell, 17. second piston rod, 18. third elastic member. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is 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 only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0021] After research, it was found that the existing clamps on the market are mostly suitable for fixed sizes or smaller sizes, which results in the need to add rubber rings to adapt to different sizes of cables during use, greatly limiting the clamping range of the clamp. The following implementation method is adopted to overcome the above problem.

[0022] Embodiment 1: An adjustable variable diameter clamp for communication engineering, such as Figure 1-Figure 6 As shown, it includes a clamping jaw 1, and arc-shaped grooves are provided on the left and right sides of the clamping jaw 1. The arc-shaped grooves of the clamping jaw 1 are the clamping areas of the cables. The arc-shaped grooves of the clamping jaw 1 are used to fix the cables. The two adjacent clamping jaws 1 cooperate with each other to fix the two cables at the same time. The left and right sides of the clamping jaw 1 are provided with incisions. When the two clamping jaws 1 cooperate with each other to fix the cables, the incisions on the same side of the two clamping jaws 1 are staggered. Two limit blocks 2 with central symmetrical distribution are provided on the opposite sides of the two mutually cooperating clamping jaws 1. The clamping jaw 1 is provided with two limit holes with central symmetrical distribution. The limit block 2 is provided with a limit hole. The limit hole of the limit block 2 is connected to the adjacent limit hole of the clamping jaw 1. The two mutually cooperating clamping jaws 1 Rectangular limiting grooves with symmetrical distribution of the center are provided on opposite sides of the jaw 1, a limiting column 3 is fixed in the rectangular limiting groove of the jaw 1, an arc plate 4 is fixed in the arc-shaped groove of the jaw 1, a spline blind hole is provided in the middle of the jaw 1, and a spline shell 5 is spline-connected in the spline blind hole of the jaw 1, and a symmetrical step surface is provided on the side of the jaw 1 away from the limiting block 2 to facilitate the installation and disassembly of adjacent jaws 1, and reinforcing ribs are provided on the outside of the jaw 1 to enhance the structural strength of the cable clamping area of ​​the jaw 1 to prevent deformation of the jaw 1 when the cable is fixed, through holes for installing nuts are provided in the middle of the spline shell 5 and the middle of the jaw 1, and a serrated limiting groove is provided on the top of the spline shell 5 to limit adjacent spline shells 5 to each other.

[0023] When fixing the communication cable, the staff places the two cables in the two arc-shaped grooves of the clamp 1, then takes another clamp 1, and turns the position of the clamp 1 so that the clamp 1 is buckled on the outside of the two cables. At this time, the limit column 3 on the lower side is inserted into the limit hole of the upper limit block 2, and the limit column 3 of the upper clamp 1 is also inserted into the limit hole of the limit block 2 of the lower clamp 1, and the limit column 3 is limited and matched with the limit hole of the upper limit block 2 of the adjacent clamp 1. Repeat the above operation to fix the six cables in turn. The staff then inserts the screw into the through hole of the clamp 1 (attached Figure 1The state shown), in the above state, the two adjacent and contacting spline shells 5 are limited by the serrated limit grooves on them, and the staff rotates the nuts on the upper and lower sides of the screw through a tool, and the two nuts move closer to each other, and the uppermost and lowermost spline shells 5 are squeezed by the adjacent nuts respectively. At this time, each spline shell 5 shrinks inward along the spline blind holes on the adjacent jaws 1 until the spline shell 5 is completely shrunk into the spline blind holes on the adjacent jaws 1. In the above process, the cable diameter between the two adjacent jaws 1 is small, and the incisions on both sides of the two matching jaws 1 are staggered. The two matching jaws 1 move closer to each other, and the arc-shaped inner side of the arc-shaped groove on the jaw 1 The plate 4 is fitted to the outside of the cable, and the two cooperating jaws 1 continue to approach each other, thereby clamping the cable between the two jaws 1. As the two nuts are continuously tightened, the squeezing pressure of the spline shell 5 on the adjacent jaws 1 gradually increases, and the squeezing pressure on the cable between the two jaws 1 also increases accordingly. When the two nuts are rotated to the specified position, the staff stops rotating the nuts and uses the relative movement of the two jaws 1 to clamp the cable, thereby achieving clamping and fixing cables of different thicknesses and maintaining the 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, thereby improving the work efficiency of cable fixing.

[0024] The existing clamps apply clamping force to the cables to fix the cables. Studies have found that after long-term fixation, the insulation of the cables is squeezed for a long time and plastic deformation occurs, which reduces the clamping force between the clamp and the cable, and there is a risk of the cable sliding along the clamp. The following implementation is adopted to overcome the above problems.

[0025] Embodiment 2: Based on embodiment 1, Figure 7-Figure 8As shown, it also includes an auxiliary fixing mechanism, which is arranged between the arc plate 4 and the clamping jaw 1, and the auxiliary fixing mechanism is used to increase the fixing strength of the cable. The auxiliary fixing mechanism includes a sliding plate 6, and an annular groove is arranged at the central part of the spline shell 5. The sliding plate 6 is slidably connected to the annular groove of the spline shell 5. A first elastic member 7 is fixedly connected between the sliding plate 6 and the spline shell 5, and the first elastic member 7 is arranged as a spring. The first elastic member 7 is located in the annular groove of the spline shell 5, and the inner sides of the two arc grooves of the clamping jaw 1 are respectively provided with asymmetric limiting grooves, one of the inner sides of the arc grooves of the clamping jaw 1 is provided with a limiting groove, and the inner side of the other arc groove is provided with two limiting grooves, a rectangular blind hole is arranged in the middle part of the clamping jaw 1, and the through hole of the clamping jaw 1 is connected with the rectangular blind hole, and a pull rope 8 is arranged in the limiting groove of the clamping jaw 1, and the pull rope 8 is a steel wire rope without elastic force. The pull rope 8 is used to squeeze the local outer surface of the cable to improve the fixing strength of the cable, and the outer ends of the pull ropes 8 adjacent to the left and right are connected to the clamp The claw 1 is fixed, and the inner ends of the left and right adjacent pull ropes 8 pass through the clamping claw 1 and are located in the rectangular blind hole. Two symmetrical first telescopic rods 9 are fixed in the rectangular blind hole of the clamping claw 1. The first telescopic rod 9 is an existing ordinary hydraulically driven telescopic rod. The telescopic end of the first telescopic rod 9 is fixed with the adjacent pull rope 8 through the mounting plate. The telescopic end of the first telescopic rod 9 is extended to tighten the adjacent pull rope 8. Two symmetrical second telescopic rods 10 are embedded in the rectangular blind hole of the clamping claw 1. The second telescopic rod 10 is an existing ordinary hydraulically driven telescopic rod. The telescopic end of the second telescopic rod 10 is fixed with 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. The arc plate 4 is set to elastic rubber. The arc plate 4 is used to increase the friction between the clamping claw 1 and the cable. The elastic force of the first elastic member 7 is greater than the elastic force of the arc plate 4 itself, which is used to ensure the extrusion force of the pull rope 8 on the cable. When the pull rope 8 is tightened, the arc plate 4 will deform.

[0026] During the process of rotating the two nuts, the spline shell 5 slides along the spline blind hole of the adjacent clamping jaws 1. Initially, the telescopic rod of the second telescopic rod 10 is in an extended state. When the spline shell 5 moves, the spline shell 5 drives the sliding plate 6 to move synchronously through the first elastic member 7. The sliding plate 6 squeezes the two adjacent second telescopic rods 10. The telescopic ends of the second telescopic rods 10 shrink inwardly. The hydraulic oil in the second telescopic rod 10 flows along the oil guide pipe into the adjacent first telescopic rod 9. The telescopic end of the first telescopic rod 9 extends outward. The telescopic end of the first telescopic rod 9 pulls the adjacent pull rope 8 through the mounting plate. In the process of gradually tightening the pull rope 8, the pull rope 8 will squeeze the adjacent arc plate 4. The squeezed part of the arc plate 4 is deformed, and the deformed part of the arc plate 4 acts on the outside of the cable.

[0027] During the movement of the spline shell 5 along the spline blind hole of the adjacent clamping jaws 1, the two clamping jaws 1 that cooperate with each other have been attached and clamped on the outside of the cable. As the staff rotates the two nuts, the spline shell 5 continues to move along the spline blind hole of the adjacent clamping jaws 1. After the pull rope 8 is tightened and squeezed on the adjacent cable, the telescopic end of the first telescopic rod 9 stops extending, and the second telescopic rod 10 also stops retracting inward. The telescopic ends of the two adjacent second telescopic rods 10 limit the adjacent sliding plates 6. As the spline shell 5 moves, the sliding plates 6 move along the spline blind holes of the adjacent spline shells 5. The inner wall slides, and the first elastic member 7 is also gradually compressed. When the first elastic member 7 is compressed, the elastic force of the first elastic member 7 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 member 7 when compressed acts on the adjacent pull ropes 8, so that the tensioning force of the pull ropes 8 acts on the outside of the adjacent cables, assisting the two adjacent clamping jaws 1 to fix the cables, thereby improving the fixing strength of the cables and reducing the probability of the cables sliding in the two mutually cooperating clamping jaws 1 (the spline shells 5 on the upper and lower sides are squeezed by the adjacent nuts).

[0028] When it is necessary to release the fixation of the cable, the staff removes the two nuts, and the two adjacent nuts gradually lose their extrusion. Under the elastic force of the first elastic member 7, the spline shell 5 slides along the spline blind hole of the adjacent clamping jaws 1, and the first elastic member 7 and the adjacent spline shell 5 gradually reset. The pull rope 8 loses its tension (loses the extrusion 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 to reset to its initial position. At the same time, when the pull rope 8 is reset, the pull rope 8 pulls the telescopic end of the adjacent first telescopic rod 9 through the mounting plate, and the telescopic end of the first telescopic rod 9 is reset accordingly. At the same time, the hydraulic oil in the first telescopic rod 9 also flows along the oil guide pipe into the adjacent second telescopic rod 10, so that the telescopic end of the second telescopic rod 10 is reset. The staff removes the screw from the middle through hole of the multiple clamping jaws 1, and then disassembles the clamping jaws 1 one by one to release the fixation of the cable.

[0029] Embodiment 3: Based on embodiment 2, Figure 3 , Figure 10-12As shown, it also includes an extrusion mechanism, which is arranged on the front and rear sides of the clamping jaw 1, and the extrusion mechanism is used to extrude the cable. The extrusion mechanism includes two symmetrical first fixed shells 11, and the two first fixed shells 11 are fixedly connected to the front and rear sides of the clamping jaw 1 through a mounting seat. Two symmetrical first piston rods 12 are slidably connected in the first fixed shells 11, and the first piston rods 12 are sealed and matched with adjacent first fixed shells 11. Two symmetrical mounting seats are fixedly connected on the front and rear sides of the clamping jaw 1, and the mounting seat of the clamping jaw 1 is slidably connected with an extrusion block 13, and the extrusion block 13 is set as a soft rubber block. The side close to the cable is set as an arc surface, which is used to increase the fitting area between the extrusion block 13 and the cable, improve the lateral extrusion force between the cable and the clamping jaw 1, and provide partial friction force to the cable. The extrusion block 13 is provided with a blind hole, and a sliding rod 14 is slidably connected in the blind hole of the extrusion block 13. A second elastic member 15 is fixedly connected between the sliding rod 14 and the adjacent extrusion block 13, and the second elastic member 15 is set as a spring. The second elastic member 15 is located in the blind hole of the extrusion block 13, and the sliding rod 14 is connected to the adjacent first The piston rods 12 are fixedly connected by a connecting frame, and two symmetrical second fixed shells 16 are embedded in the opposite sides of the two clamping jaws 1 that cooperate with each other. A second piston rod 17 is slidably connected in the second fixed shell 16. The second piston rod 17 is sealed with the adjacent second fixed shell 16. A third elastic member 18 is fixedly connected between the second piston rod 17 and the adjacent second fixed shell 16. An oil guide pipe is connected between the second fixed shell 16 and 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 and The spline shell 5 passes through the adjacent clamping jaws 1 and is fixedly connected with a fixing ring. The second piston rod 17 is fixedly connected with 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. The inner wall of the first fixed shell 11 is provided with two symmetrical limiting rings. The limiting rings in the first fixed shell 11 are used to limit the adjacent first piston rods 12 to ensure that there is a gap between the opposite ends of the two adjacent first piston rods 12, so that the hydraulic oil can be injected between the two adjacent first piston rods 12 to push the two adjacent first piston rods 12 to move.

[0030] When the staff tightens the two nuts, the spline housing 5 drives the fixing ring thereon to slide along the spline blind hole of the adjacent clamping jaws 1, and the fixing ring on the spline housing 5 squeezes the two adjacent second piston rods 17. The second piston rod 17 moves downward along the adjacent second fixing housing 16, and the second piston rod 17 squeezes the hydraulic oil in the adjacent second fixing housing 16. The third elastic member 18 is compressed, and the hydraulic oil in the second fixing housing 16 flows into the adjacent first fixing housing 11 along the adjacent oil guide pipe. The hydraulic oil injected into the first fixing housing 11 pushes the two adjacent first piston rods 12 to move away from each other. The first piston rod 12 drives the adjacent sliding rods 14 to move synchronously through the connecting frame. Initially, the sliding rod 14 drives the adjacent extrusion block 13 to move through the adjacent second elastic member 15 until the extrusion block 13 is squeezed onto the adjacent cable. As the spline housing 5 drives the adjacent The adjacent second piston rod 17 continues to move, and the hydraulic oil in the second fixed shell 16 is continuously injected into the adjacent first fixed shell 11. Since the extrusion block 13 has been squeezed and fitted on the adjacent cable, when the first piston rod 12 continues to drive the adjacent sliding rod 14 to move, the sliding rod 14 squeezes the adjacent second elastic member 15, and the second elastic member 15 is compressed. The force of the second elastic member 15 during the compression process acts on the extrusion block 13, so that the extrusion block 13 is always squeezed and fitted on the adjacent cable until the spline shell 5 stops moving along the spline blind hole of the adjacent clamping jaw 1. The extrusion block 13 is used to extrude and fit the adjacent cables, providing lateral support force for the fixed cables, which not only increases the lateral extrusion force between the cable and the two adjacent clamping jaws 1, but also the extrusion block 13 provides partial friction for the cable, further improving the fixing stability of the cable between the two adjacent clamping jaws 1.

[0031] When disassembling the cable, the staff rotates the two nuts, and then the spline shell 5 is reset along the spline blind hole of the adjacent clamping jaw 1. The spline shell 5 drives the two adjacent second piston rods 17 to reset through the fixing ring, and the third elastic member 18 is reset at the same time. The hydraulic oil in the first fixed shell 11 flows back to the adjacent second fixed shell 16. Then, the two adjacent first piston rods 12 on the first fixed shell 11 move closer to each other and reset. Then, the sliding rod 14 is used to drive the adjacent extrusion block 13 to reset through the adjacent second elastic member 15, and the extrusion block 13 no longer squeezes the adjacent cable.

[0032] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. An adjustable variable diameter clamp for communication engineering, characterized in that: The invention comprises a clamping jaw (1), wherein arc-shaped grooves are arranged on both sides of the clamping jaw (1), the arc-shaped grooves of the clamping jaw (1) are the clamping areas of the cables, the arc-shaped grooves of the clamping jaw (1) are used to fix the cables, notches are arranged on both sides of the clamping jaw (1), a centrally symmetrically distributed limiting block (2) is arranged on one side of the clamping jaw (1), the clamping jaw (1) is provided with centrally symmetrically distributed limiting holes, the limiting block (2) is provided with limiting holes, and the limiting The limiting hole of the positioning block (2) is connected to the limiting hole adjacent to the clamping jaw (1); a rectangular limiting groove symmetrically distributed in the center is provided on one side of the clamping jaw (1); a limiting column (3) is fixedly connected in the rectangular limiting groove of the clamping jaw (1); an arc-shaped plate (4) is fixedly connected in the arc-shaped groove of the clamping jaw (1); a spline blind hole is provided on the side of the clamping jaw (1) away from the limiting block (2); and a spline shell (5) is spline-connected in the spline blind hole of the clamping jaw (1).

2. The adjustable diameter-changing clamp for communication engineering according to claim 1 is characterized in that: A symmetrical step surface is provided on one side of the clamping jaw (1) away from the limiting block (2), so as to facilitate installation and removal of adjacent clamping jaws (1).

3. The adjustable diameter-changing clamp for communication engineering according to claim 2 is characterized in that: A reinforcing rib is provided on a side of the clamping jaw (1) away from the limiting block (2), so as to enhance the structural strength of the cable clamping region of the clamping jaw (1).

4. The adjustable diameter-changing clamp for communication engineering according to claim 3 is characterized in that: A through hole for mounting a nut is provided at the middle of the spline housing (5) and the middle of the clamping jaw (1), and a sawtooth limiting groove is provided at a side of the spline housing (5) away from the adjacent clamping jaw (1) for limiting the mutual position of adjacent spline housings (5).

5. The adjustable diameter-changing clamp for communication engineering according to claim 4 is characterized in that: The invention also includes an auxiliary fixing mechanism, which is arranged between the arc plate (4) and the clamping jaw (1), and is used to increase the fixing strength of the cable. The auxiliary fixing mechanism includes a sliding plate (6), and a side of the spline shell (5) close to the adjacent clamping jaw (1) is provided with an annular groove, and the sliding plate (6) is slidably connected in the annular groove of the spline shell (5). A first elastic member (7) is fixedly connected between the sliding plate (6) and the spline shell (5), and the inner side surfaces of the two arc grooves of the clamping jaw (1) are respectively provided with asymmetric limit grooves, and a rectangular blind hole is provided in the middle of the clamping jaw (1), and the through hole of the clamping jaw (1) is connected to the rectangular blind hole. ) is provided with a pull rope (8), one end of the pull rope (8) is fixedly connected to the clamping jaw (1), the other end of the pull rope (8) passes through the clamping jaw (1) and is located in a rectangular blind hole, a symmetrical first telescopic rod (9) is fixedly connected to the rectangular blind hole of the clamping jaw (1), the telescopic end of the first telescopic rod (9) is fixedly connected to the adjacent pull rope (8) through a mounting plate, a symmetrical second telescopic rod (10) is embedded in the rectangular blind hole of the clamping jaw (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), and hydraulic oil is injected between the second telescopic rod (10) and the adjacent oil guide pipe.

6. The adjustable diameter-changing clamp for communication engineering according to claim 5 is characterized in that: The pull rope (8) is a steel wire rope without elasticity, and the pull rope (8) is used to compress a part of the outer surface of the cable.

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

8. The adjustable diameter-changing clamp for communication engineering according to claim 7 is characterized in that: The clamping jaw (1) further comprises an extrusion mechanism, the extrusion mechanism being arranged on both sides of the clamping jaw (1), the extrusion mechanism being used for extruding a cable, the extrusion mechanism comprising a symmetrical first fixed shell (11), the symmetrical first fixed shell (11) being fixedly connected to both sides of the clamping jaw (1), a symmetrical first piston rod (12) being slidably connected in the first fixed shell (11), both sides of the clamping jaw (1) being fixedly connected to symmetrical mounting seats, the mounting seat of the clamping jaw (1) being slidably connected to an extrusion block (13), the extrusion block (13) being provided with a blind hole, a sliding rod (14) being slidably connected in the blind hole of the extrusion block (13), and a second elastic member (15) being fixedly connected between the sliding rod (14) and the adjacent extrusion block (13). The sliding rod (14) is fixedly connected to the adjacent first piston rod (12) via a connecting frame; a symmetrical second fixed shell (16) is embedded on the side of the clamping jaw (1) away from the limit block (2); a second piston rod (17) is slidably connected in the second fixed shell (16); a third elastic member (18) is fixedly connected between the second piston rod (17) and the adjacent second fixed shell (16); an oil guide pipe is connected between the second fixed shell (16) and the adjacent first fixed shell (11); a fixing ring is fixedly connected to the spline shell (5); the second piston rod (17) is fixedly connected to the fixing ring on the adjacent spline shell (5); and hydraulic oil is filled in the second fixed shell (16) and the adjacent oil guide pipe.

9. The adjustable diameter-changing clamp for communication engineering according to claim 8 is 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 position of the adjacent first piston rods (12).

10. The adjustable diameter-changing clamp for communication engineering according to claim 9, characterized in that: The extrusion block (13) is configured as a soft rubber block and one side is configured as an arc-shaped surface, so as to increase the contact area between the extrusion block (13) and the cable.

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