Cable clamping device

Abstract

The utility model discloses a cable clamping device which comprises a shell, a clamping assembly and a driving assembly, the clamping assembly comprises at least two clamping blocks and at least two hinging pieces, the at least two clamping blocks are oppositely arranged and arranged in the shell, a clamping gap with the adjustable size is formed by the at least two clamping blocks, and the driving assembly is arranged in the shell. The hinge piece is hinged to the inner wall of the shell and the clamping block, the driving assembly is connected to the shell and connected to the clamping block or the hinge piece and used for driving the hinge piece to rotate relative to the shell so as to adjust the size of the clamping gap, and the hinge piece can be locked to the shell through the driving assembly. According to the utility model, the problem that the stability of the protective device in clamping the wire is easily reduced because the clamping force for clamping the wire is weakened due to the failure of the spring after long-term use can be effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage engineering construction technology, specifically to a cable clamping device. Background Technology

[0002] During the construction of low-voltage electrical engineering projects, protective insulation devices are usually used to protect exposed wires to meet the needs of replacing wires, installing or removing electricity meters, or disassembling terminals and other electrical equipment.

[0003] For example, Chinese utility model patent CN221408412U, entitled "A Protective Device for Low-Voltage Engineering Construction," includes an insulating sleeve. Clamping blocks are located on both sides of the inner surface of the insulating sleeve, and insulating pads are provided on the clamping blocks. A spring is provided between the clamping blocks and the insulating sleeve. A fixing ring is provided on the clamping blocks. Fixed pulleys are provided on the top and bottom surfaces of the insulating sleeve. This device moves the connecting blocks in a through groove on a connecting frame by pulling a lever. A connecting rope moves the fixing ring on the top surface of the clamping blocks, allowing the clamping blocks to move. When the two clamping blocks are in an open / closed state, one end of a wire is inserted into the insulating sleeve. Releasing the lever allows the spring force between the clamping blocks and the insulating sleeve to clamp the wire, thus securing the wire securely inside the insulating sleeve.

[0004] The clamping force for holding the wire is provided by the elastic restoring force generated when the spring recovers its elastic deformation. However, the spring will fail after long-term use, which can easily lead to a decrease in the stability of the protective device when clamping the wire. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a cable clamping device to solve the technical problem in the prior art where the clamping force of the cable is weakened due to the failure of the spring after long-term use, which easily leads to a decrease in the stability of the protective device when clamping the cable.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a cable clamping device, including:

[0008] case;

[0009] A clamping assembly includes at least two clamping blocks and at least two hinges. The at least two clamping blocks are disposed opposite to each other and are built into the housing. The at least two clamping blocks form an adjustable clamping gap. The hinges are hinged to the inner wall of the housing and the clamping blocks.

[0010] A driving assembly is connected to the shell and connected to the clamping block or the hinged piece, used to drive the hinged piece to rotate relative to the shell, so as to adjust the size of the clamping gap, and the driving assembly can also lock the hinged piece to the shell.

[0011] In some embodiments, the driving assembly comprises a sliding piece and a locking piece, the sliding piece is hinged to the hinged piece and slidingly connected to the shell, and the sliding piece can adjust the size of the clamping gap after sliding relative to the shell; the locking piece is connected to the shell and can be clamped with the sliding piece, used to limit the sliding piece to continue to slide relative to the shell, and make at least two clamping blocks clamp the cable.

[0012] In some embodiments, the shell comprises a fixed block and a barrel wall, the fixed block is provided with a sliding hole, and the barrel wall is connected to the fixed block; the sliding piece comprises a sliding block and a sliding rod, the sliding block is built-in in the shell, and the hinged piece is connected to the sliding block; one end of the sliding rod is inserted into the sliding hole and connected to the sliding block, and the other end is built-out of the barrel wall.

[0013] In some embodiments, the sliding piece further comprises a resilient part, one end of the resilient part is connected to the fixed block, and the other end is connected to the sliding block, used to drive the sliding block to automatically reset after sliding relative to the shell.

[0014] In some embodiments, the fixed block is further provided with at least one guide groove, the guide groove is arranged along the circumferential direction of the sliding hole and communicated with the sliding hole, and the sliding piece further comprises at least one guide block, the guide block is arranged in one-to-one correspondence with the guide groove, the guide block is slidingly inserted into the guide groove and connected to the circumferential outer wall of the sliding rod.

[0015] In some embodiments, the locking piece comprises at least one abutting part and a driving part, the abutting part is arranged relative to the guide block and slidingly connected to the fixed block, and the driving part is connected to the abutting part and the fixed block, used to drive the abutting part to slide close to or away from the guide block and abut against the guide block.

[0016] In some embodiments, the locking piece further comprises a connecting seat, the connecting seat is connected to the fixed block and provided with a communicating hole communicated with the sliding hole, and the connecting seat is further provided with a communicating groove relative to the guide groove, the communicating groove is communicated with the communicating hole and the guide groove, and the abutting part is arranged in one-to-one correspondence with the communicating groove and slidingly built-in in the communicating groove.

[0017] In some embodiments, the driving part comprises at least one wedge and a locking sleeve, the wedge is slidably arranged in the communication groove and connected to the abutting part, and the cross-sectional area of the wedge gradually increases along the direction close to the guide groove, the locking sleeve is slidably arranged on the connecting seat and can abut against the at least one wedge, and the locking sleeve slides relative to the connecting seat to push the wedge and the abutting part to slide close to the guide block and abut against the guide block.

[0018] In some embodiments, the outer wall of the connecting seat is provided with external threads, and the inner wall of the locking sleeve is provided with internal threads, and the locking sleeve is threadedly connected to the connecting seat.

[0019] In some embodiments, the number of the clamping blocks in the clamping assembly is four, the four clamping blocks are uniformly distributed along the circumferential direction of the sliding rod, the four clamping blocks are respectively provided with grooves, and the four grooves jointly form the clamping gap.

[0020] Compared with the prior art, the cable clamping device has the following beneficial effects: the inner wall of the shell is provided with a clamping assembly having a size-adjustable clamping gap for clamping a cable, a driving assembly is arranged to drive the hinge relative to the shell to adjust the size of the clamping gap, and the driving assembly can also lock the hinge to the shell. Compared with the prior art, the driving assembly is connected to the shell and connected to the clamping block or the hinge, and the driving assembly can drive the hinge to rotate relative to the shell to adjust the size of the clamping gap, thereby clamping or releasing the cable. At the same time, the driving assembly can also lock the hinge to the shell, so that the at least two clamping blocks generate a stable clamping force to enable the clamping assembly to clamp the cable. The spring is not used to generate an elastic restoring force to clamp the cable, which avoids the failure of the spring due to long-term use and solves the technical problem of the prior art that the clamping force of the clamping device for clamping the cable decreases due to the failure of the spring after long-term use, thereby reducing the stability of the protective device when clamping the cable. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a three-dimensional view of a cable clamping device according to an embodiment of the present application;

[0022] Figure 2 is a three-dimensional view of a cable clamping device according to an embodiment of the present application;

[0023] Figure 3 is a three-dimensional view of a cable clamping device according to an embodiment of the present application;

[0024] Figure 4 is along Figure 3 is an enlarged view of part A in FIG. 1.

[0025] Figure 5 is the three-dimensional view of the fixed block connected with the driving assembly and the clamping assembly provided by the embodiment of the utility model.

[0026] Explanation of reference signs:

[0027] The shell 100;The fixed block 110;The cylinder wall 120;The clamping assembly 200;The clamping gap 210;The clamping block 220;The hinged piece 230;The first hinged rod 231;The second hinged rod 232;The driving assembly 300;The sliding piece 310;The sliding block 311;The sliding rod 312;The elastic part 313;The guide block 314;The locking piece 320;The abutting portion 321;The driving portion 322;The wedge block 3221;The locking sleeve 3222;The connecting seat 323. Specific embodiments

[0028] In order to make the utility model purposes, technical solutions and advantages more clearly, the following will be combined with the drawings and examples, and the utility model will be further described in detail. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0029] In order to solve the technical problem that the clamping force of the clamping wire is weakened due to the failure of the spring after long-term use, thereby easily leading to the reduction of the stability of the protective device when clamping the wire, the utility model provides a cable clamping device, which can realize the connection of the driving assembly to the shell, and the connection of the driving assembly to the clamping block or the hinged piece. The driving assembly can drive the hinged piece to rotate relative to the shell to adjust the size of the clamping gap, realize the clamping or release of the cable, and the driving assembly can also lock the hinged piece to the shell, so that the at least two clamping blocks generate stable clamping force to enable the clamping assembly to clamp the cable, without using the spring to generate elastic restoring force to clamp the cable, avoiding the failure of the spring due to long-term use.

[0030] It should be noted that the cable clamping device of the utility model is used in but not limited to the weak current engineering construction technical field, in order to facilitate the description, in the utility model, only the cable clamping device applied in the weak current engineering construction technical field equipment is taken as an example for description, and the principle of the cable clamping device applied in other types of equipment is substantially the same as that applied in the weak current engineering construction technical field equipment, which is not described here.

[0031] Please refer to Figures 1 to 5 , Figures 1 to 3The utility model discloses a structure diagram of cable clamping device, and the cable clamping device includes: casing 100, clamping assembly 200 and drive assembly 300, clamping assembly 200 includes at least two clamping blocks 220 and at least two hinged parts 230, at least two clamping blocks 220 are oppositely arranged and are built into casing 100, at least two clamping blocks 220 form adjustable clamping gap 210, and hinged part 230 is hinged with the inner wall of casing 100 and clamping block 220, drive assembly 300 is connected to casing 100 and is connected to clamping block 220 or hinged part 230, is used for drive hinged part 230 relative casing 100 rotation to adjust the size of clamping gap 210, and drive assembly 300 can also lock hinged part 230 in casing 100.

[0032] In the device, drive assembly 300 is connected to casing 100 and clamping block 220 or hinged part 230, and hinged part 230 is driven to rotate relative to casing 100 by drive assembly 300 to adjust the size of clamping gap 220, realize the clamping or release of cable, and drive assembly 300 can also lock hinged part 230 in casing 100, so that at least two clamping blocks 220 generate stable clamping force to enable clamping assembly 200 to clamp cable, without using spring to generate elastic restoring force to clamp cable, avoiding the failure of spring due to long-term use, and solving the technical problem that the clamping force of the clamping wire is weakened due to the failure of the spring after long-term use in the prior art, thereby easily leading to the reduction of the stability of the protective device when clamping the wire.

[0033] In one embodiment, please refer to Figure 5 The number of clamping blocks 220 in clamping assembly 200 is four, the four clamping blocks 220 are uniformly distributed along the circumferential direction of sliding rod 312, and the four clamping blocks 220 are respectively provided with grooves, and the four grooves jointly form clamping gap 210.

[0034] By uniformly distributing four clamping blocks 220 along the circumferential direction of sliding rod 312, the clamping stability of the cable can be improved.

[0035] Further, the four clamping blocks 220 are respectively provided with grooves, and the four grooves can enhance the clamping stability by cooperating with each other.

[0036] Further, the clamping block 220 in the device is a common and easily purchased rubber material on the market, has elasticity, and can improve the clamping stability of the cable.

[0037] In one embodiment, please refer to Figures 1 to 5The driving assembly comprises a sliding member and a locking member, the sliding member is hinged with the hinged member and is slidingly connected with the shell, the sliding member can adjust the size of the clamping gap after sliding relative to the shell, and the locking member is connected with the shell and can be clamped with the sliding member, so as to limit the sliding member from continuously sliding relative to the shell and enable the at least two clamping blocks to clamp the cable.

[0038] The sliding member 310 capable of sliding relative to the shell 100 is hinged with the clamping assembly 200, the clamping assembly 200 is driven by the sliding member 310 to adjust the size of the clamping gap 210, and the clamping of the clamping assembly 200 is limited by the clamping between the locking member and the sliding member 310, so that the stable clamping force is generated to enable the clamping assembly 200 to clamp the cable.

[0039] Further, the material of the shell 100 is non-conductive, which can effectively insulate and play a role in ensuring safety. The shell 100 is a common and easily purchased device on the market, which belongs to the conventional setting known to those skilled in the art, and will not be described in detail here.

[0040] In the embodiment, as shown in Figures 1 to 3 The shell 100 comprises a fixed block 110 and a cylinder wall 120, the fixed block 110 is provided with a sliding hole, the cylinder wall 120 is connected with the fixed block 110, and the sliding member 310 comprises a sliding block 311 and a sliding rod 312, an elastic part 313, and at least one guide block 314.

[0041] The shell 100 is composed of the fixed block 110 and the cylinder wall 120 to form an internal hollow structure in the shape of a cylinder with one end being open and the other end being closed, and the clamping assembly 200 is built-in the shell 100, so that the cable can be inserted into the clamping gap 210 of the clamping assembly 200 through the open end of the shell 100.

[0042] Further, the clamping member is hinged with the sliding member 310 and the inner wall of the shell 100 through the hinged member 230, the sliding of the sliding member 310 relative to the shell 100 can be transmitted to the clamping block 220 through the hinged member 230, so that the two clamping blocks 220 are respectively moved close to or away from each other, and the size of the clamping gap 210 is adjusted.

[0043] In the embodiment, as shown in Figure 5 The sliding block 311 is built-in the shell 100, and the hinged member 230 is connected with the sliding block 311, one end of the sliding rod 312 is inserted into the sliding hole and connected with the sliding block 311, and the other end is built-out of the cylinder wall 120.

[0044] The sliding fit between the sliding rod 312 and the sliding hole is used to realize the sliding connection between the sliding block 311 and the shell 100. Here, the sliding rod 312 has a large-diameter section and a small-diameter section. The large-diameter section of the sliding rod 312 is arranged away from the fixed block 110 relative to the small-diameter end, facilitating the user to pull the sliding rod 312.

[0045] Further, the sliding block 311 is used to realize the connection between the plurality of hinged pieces 230 and the sliding rod 312. The four hinged pieces 230 are uniformly distributed along the circumferential direction of the sliding block 311.

[0046] In one embodiment, as shown in Figure 5 , the hinged piece 230 comprises a first hinged rod 231 and a second hinged rod 232. The first hinged rod 231 is L-shaped and has a first section and a second section. One end of the first section of the first hinged rod 231 is connected to the circumferential side wall of the sliding rod 312. One end of the second section of the first hinged rod 231 is connected to the other end of the first section. The middle part of the second hinged rod 232 is rotationally connected to the other end of the second section of the first hinged rod 231. One end of the second hinged rod 232 is rotationally connected to the inner wall of the barrel wall 120, and the other end is rotationally connected to the clamping block 220. When the sliding rod 312 slides along the sliding hole, the second hinged rod 232 can be driven to rotate relative to the shell 100, and the plurality of clamping blocks 220 can be driven to move closer to or away from each other.

[0047] In one embodiment, as shown in Figure 5 , one end of the elastic part 313 is connected to the fixed block 110, and the other end is connected to the sliding block 311, which is used to drive the sliding block 311 to automatically reset after sliding relative to the shell 100.

[0048] The two ends of the elastic part 313 are respectively connected to the fixed block 110 and the sliding block 311, which is used to drive the sliding block 311 to automatically reset after sliding relative to the fixed block 110, facilitating the user to operate.

[0049] Further, the elastic part 313 is a spring, an elastic block, or a spring sheet commonly seen in the market and easy to purchase. Here, it is a commonly seen and easy to purchase device, which is a conventional setting known to those skilled in the art, and will not be described in detail here.

[0050] In one embodiment, the fixed block 110 further has at least one guide slot arranged along the circumferential direction of the sliding hole and in communication with the sliding hole. The guide block 314 is arranged in one-to-one correspondence with the guide slot. The guide block 314 is slidingly inserted into the guide slot and connected to the circumferential outer wall of the sliding rod 312.

[0051] The at least one guide block 314 cooperates with the guide slot to improve the stability of the sliding rod 312 sliding relative to the fixed block 110.

[0052] Further, the number of the guide blocks 314 is four, and the four guide blocks 314 are evenly distributed along the circumferential direction of the sliding rod 312 and are connected to the sliding rod 312.

[0053] In this embodiment, as shown in Figures 3 to 5 , the locking member 320 comprises at least one abutting portion 321 and a driving portion 322, and a connecting seat 323.

[0054] The abutting portion 321 is arranged opposite to the guide block 314 and is slidingly connected to the fixed block 110, and the driving portion 322 is connected to the abutting portion 321 and the fixed block 110, for driving the abutting portion 321 to slide close to or away from the guide block 314 and abut against the guide block 314.

[0055] Under the driving of the driving portion 322, the abutting portion 321 slides relative to the fixed block 110 and abuts against the guide block 314, and the friction between the guide block 314 and the abutting portion 321 is utilized to limit the sliding of the sliding rod 312 relative to the fixed block 110, so as to lock the size of the clamping gap 210 of the clamping assembly 200.

[0056] Further, the abutting portion 321 is elastic, and a friction sheet is arranged on the surface of the abutting portion 321, so as to enhance the friction when the guide block 314 abuts against the abutting portion 321, and improve the stability of the device.

[0057] In one embodiment, as shown in Figure 5 , the connecting seat 323 is connected to the fixed block 110 and is provided with a communication hole which is in communication with the sliding hole, and the connecting seat 323 is further provided with a communication groove which is in communication with the communication hole and the guide groove, and the abutting portion 321 is arranged one by one in the communication groove and is slidingly arranged in the communication groove.

[0058] The communication groove is used to realize the sliding connection between the abutting portion 321 and the fixed block 110.

[0059] In one embodiment, as shown in Figure 4 , Figure 5 , the driving portion 322 comprises at least one wedge-shaped block 3221 and a locking sleeve 3222, the wedge-shaped block 3221 is slidingly arranged in the communication groove and is connected to the abutting portion 321, and the cross-sectional area of the wedge-shaped block 3221 gradually increases along the direction close to the guide groove, the locking sleeve 3222 is slidingly arranged on the connecting seat 323 and can abut against the at least one wedge-shaped block 3221, and the locking sleeve 3222 slides relative to the connecting seat 323, for driving the wedge-shaped block 3221 and the abutting portion 321 to slide close to the guide block 314 and abut tightly against the guide block 314.

[0060] By sliding the locking sleeve 3222 along the axial direction of the sliding block 311, the wedge-shaped blocks 3221 and the abutting portion 321 can be pushed to slide along the radial direction of the sliding rod 312 and approach the guide block 314, so as to realize the abutting between the abutting portion 321 and the guide block 314.

[0061] In one of the embodiments, the circumferential outer wall of the connecting seat 323 is provided with external threads, and the circumferential inner wall of the locking sleeve 3222 is provided with internal threads, and the locking sleeve 3222 is threadedly connected to the connecting seat 323.

[0062] The locking sleeve 3222 is threadedly connected to the connecting seat 323, and the user can slide the locking sleeve 3222 to approach the fixed block 110 by rotating the locking sleeve 3222, so as to simultaneously drive the plurality of wedge-shaped blocks 3221 to slide along the radial direction of the sliding rod 312 and approach each other.

[0063] Further, the locking sleeve 3222 can also be connected to the elongated end of the linear driving structure, and the elongated end of the linear driving structure is elongated or shortened relative to the fixed end to drive the locking sleeve 3222 to slide relative to the connecting seat 323. The linear driving structure can be a push rod motor, a hydraulic cylinder or a pneumatic cylinder, which is a conventional setting known to those skilled in the art and will not be described in detail here.

[0064] In order to better understand the present application, the following will be combined Figures 1 to 5 The technical scheme of the present application will be described in detail:

[0065] The inner wall of the shell 100 is provided with a clamping assembly 200, the clamping assembly 200 has a size-adjustable clamping gap 210 for clamping a cable, and the driving assembly 300 can be used to drive the hinge piece 230 to rotate relative to the shell 100 to adjust the size of the clamping gap 210, and the driving assembly 300 can also lock the hinge piece 230 to the shell. Further, the driving assembly 300 is connected to the shell 100 and connected to the clamping block 220 or the hinge piece 230, and the driving assembly 300 can drive the hinge piece 230 to rotate relative to the shell 100 to adjust the size of the clamping gap 220, so as to clamp or release the cable, and the driving assembly 300 can also lock the hinge piece 230 to the shell 100, so that the at least two clamping blocks 220 generate a stable clamping force to enable the clamping assembly 200 to clamp the cable, without using a spring to generate an elastic restoring force to clamp the cable, thereby avoiding the failure of the spring due to long-term use.

[0066] The specific working process of the utility model, in use, the user first inserts the cable into the clamping gap 210, then uses the direction of pulling the sliding rod 312 away from the fixed block 110, the sliding block 311 is driven by the sliding rod 312 and slides close to the fixed block 110, and four clamping blocks 220 are driven to move close to each other, the size of the clamping gap 210 is adjusted, and the material is clamped, finally when the sliding rod 312 cannot be pulled, four clamping blocks 220 clamp the cable, at this time, the rotating and tightening locking sleeve 3222 are used, so that four abutting blocks are respectively abutted tightly with four guide blocks 314, the guide block 314 and the sliding rod 312 cannot slide relative to the fixed block 110, and the cable is clamped in the clamping gap 210.

[0067] Further, when the cable needs to be removed, the user first rotates and loosens the sleeve, so that four abutting blocks slide away from four guide blocks 314 respectively and are completely separated from them, at this time, the clamping force of the cable is disappeared, the sliding block 311 is automatically reset under the driving of the spring, and four clamping blocks 220 are driven to move away from each other, and the cable can be removed from the clamping gap 210.

[0068] The device can solve the technical problem that the clamping force of the clamping wire is weakened due to the failure of the spring after long-term use in the prior art, thereby easily leading to the stability reduction of the protective device when clamping the wire.

[0069] The specific implementation mode of the utility model described above does not constitute a limitation on the protection scope of the utility model. Any various other corresponding changes and deformations made according to the technical concept of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A cable clamping device, characterized by The utility model provides a cable clamp, which comprises a shell, a clamping assembly and a driving assembly. The clamping assembly comprises at least two clamping blocks and at least two hinged pieces. The at least two clamping blocks are oppositely arranged and built-in the shell. The at least two clamping blocks are formed with a size-adjustable clamping gap.

2. The cable clamping device of claim 1, wherein, The hinged pieces are hinged to the inner wall of the shell and the clamping blocks.

3. The cable clamping device of claim 2, wherein, The driving assembly is connected to the shell and the clamping blocks or the hinged pieces.

4. The cable clamping device of claim 3, wherein, The driving assembly is used to drive the hinged pieces to rotate relative to the shell to adjust the size of the clamping gap.

5. The cable clamping device of claim 3, wherein, The driving assembly can also lock the hinged pieces to the shell.

6. The cable clamping device of claim 5, wherein, The driving assembly comprises a sliding piece and a locking piece.

7. The cable clamping device of claim 6, wherein, The sliding piece is hinged to the hinged pieces and slidingly connected to the shell.

8. The cable clamping device of claim 7, wherein, The sliding piece can adjust the size of the clamping gap after sliding relative to the shell. The locking piece is connected to the shell and can be clamped with the sliding piece. The locking piece is used to limit the sliding piece to continue to slide relative to the shell and enable the at least two clamping blocks to clamp the cable. The shell comprises a fixed block and a barrel wall. The fixed block is provided with a sliding hole. The barrel wall is connected to the fixed block. The sliding piece comprises a sliding block and a sliding rod. The sliding block is built-in the shell and the hinged pieces are connected to the sliding block. One end of the sliding rod is inserted into the sliding hole and connected to the sliding block. The other end of the sliding rod is built-out of the barrel wall. The sliding piece further comprises an elastic part. One end of the elastic part is connected to the fixed block. The other end of the elastic part is connected to the sliding block. The elastic part is used to drive the sliding block to automatically reset after sliding relative to the shell. The fixed block is further provided with at least one guide groove. The guide groove is arranged along the circumferential direction of the sliding hole and communicates with the sliding hole. The sliding piece further comprises at least one guide block. The guide block is correspondingly arranged with the guide groove. The guide block is slidingly inserted into the guide groove and connected to the circumferential outer wall of the sliding rod. The locking piece comprises at least one abutting part and a driving part. The abutting part is arranged relative to the guide block and slidingly connected to the fixed block. The driving part is connected to the abutting part and the fixed block. The driving part is used to drive the abutting part to slide close to or away from the guide block and abut against the guide block. The locking piece further comprises a connecting seat. The connecting seat is connected to the fixed block and provided with a communicating hole communicating with the sliding hole. The connecting seat is further provided with a communicating groove relative to the guide groove. The communicating groove communicates with the communicating hole and the guide groove. The abutting part is correspondingly arranged with the communicating groove and slidingly built-in the communicating groove. The driving part comprises at least one wedge block and a locking sleeve. The wedge block is slidingly built-in the communicating groove and connected to the abutting part. The cross-sectional area of the wedge block gradually increases along the direction close to the guide groove. The locking sleeve is slidingly sleeved on the connecting seat and can abut against at least one wedge block. The locking sleeve slides relative to the connecting seat. The locking sleeve is used to push the wedge block and the abutting part to slide close to the guide block and abut against the guide block.

9. The cable clamping device of claim 8, wherein, The circumferential outer wall of the connecting seat is provided with external threads, and the circumferential inner wall of the locking sleeve is provided with internal threads.

10. The cable clamping device of claim 3, wherein, The number of the clamping blocks in the clamping assembly is four, the four clamping blocks are uniformly distributed along the circumferential direction of the sliding rod, the four clamping blocks are respectively provided with grooves, and the four grooves jointly form the clamping gap.

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