A hard cable protection tube and connecting device

Abstract

The present invention relates to the technical field of cable protection, and in particular to a hard cable protection tube and a connecting device, comprising a supporting mechanism; and also comprising a connecting mechanism, which is mounted on the supporting mechanism; the supporting mechanism protects the cable, and the connecting mechanism seals the connection between two groups of supporting mechanisms; it mounts multiple groups of connecting mechanisms on multiple groups of supporting mechanisms respectively, and then aligns the openings of the multiple groups of supporting mechanisms, and then mounts the multiple groups of connecting mechanisms on the connection between multiple groups of adjacent supporting mechanisms respectively, performs simple fixation, and then inserts the cable into the multiple groups of supporting mechanisms, and then connects the multiple groups of connecting mechanisms and the multiple groups of supporting mechanisms into a whole through the hard cable protection tube connecting device to protect the cable, thereby improving the practicality of the hard cable protection tube.

Description

Technical Field

[0001] The present invention relates to the technical field of cable protection, and in particular to a hard cable protection tube and a connecting device. Background Art

[0002] A cable is a wire with an insulation layer and a protective sheath. It is usually thick and consists of multiple insulated conductors. It is used for power transmission or telecommunications transmission. However, some cables are buried underground or installed in complex environments. The cables are easily damaged or their service life is affected.

[0003] Therefore, in order to reduce cable damage and increase the service life of the cable, the cable is generally protected by a cable protection tube such as that disclosed in the invention patent with publication number CN105914674B and a cable protection tube that is easy to construct disclosed in the invention patent with publication number CN104201624B.

[0004] However, it was found during use that the existing cable protection tube has a relatively simple structure, cumbersome installation steps, which affects the construction speed, and poor sealing. Therefore, a hard cable protection tube and a connecting device are urgently needed to improve the above problems. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a hard cable protection tube and connecting device, which respectively sets multiple groups of connecting mechanisms on multiple groups of supporting mechanisms, aligns the openings of the multiple groups of supporting mechanisms, and then respectively sets the multiple groups of connecting mechanisms on the connection points of multiple groups of adjacent supporting mechanisms for simple fixation, and then inserts the cables into the multiple groups of supporting mechanisms, and then connects the multiple groups of connecting mechanisms and the multiple groups of supporting mechanisms into a whole through a hard cable protection tube connecting device to protect the cables, thereby improving the practicality of the hard cable protection tube.

[0006] A hard cable protection tube of the present invention comprises a supporting mechanism and a connecting mechanism, wherein the connecting mechanism is sleeved on the supporting mechanism;

[0007] The supporting mechanism protects the cable, and the connecting mechanism seals the connection between the two sets of supporting mechanisms;

[0008] The multiple groups of connecting mechanisms are respectively mounted on the multiple groups of supporting mechanisms, and then the openings of the multiple groups of supporting mechanisms are aligned. After that, the multiple groups of connecting mechanisms are respectively mounted on the connection parts of the multiple groups of adjacent supporting mechanisms, and simply fixed. Then, the cables are inserted into the multiple groups of supporting mechanisms, and then the multiple groups of connecting mechanisms and the multiple groups of supporting mechanisms are connected into a whole through the hard cable protection tube connection device to protect the cables, thereby improving the practicality of the hard cable protection tube.

[0009] Preferably, the supporting mechanism includes a tube body and multiple groups of convex rings, and the multiple groups of convex rings are respectively installed at both ends of the tube body; the cable is passed through the tube body so that the tube body protects the cable, and the multiple groups of tube bodies are conveniently connected together by cooperating with the connecting mechanism through the multiple groups of convex rings, thereby improving the practicality of the hard cable protection tube.

[0010] Preferably, the connecting mechanism includes a sleeve, two groups of hexagonal sleeves, two groups of protective layers and multiple groups of connecting columns. The sleeve is sleeved on the tube body, the two groups of hexagonal sleeves are sleeved on the sleeve, the two groups of protective layers are respectively installed on the two groups of hexagonal sleeves, and multiple groups of perforations are provided on the sleeve, multiple groups of annular grooves are provided on the inner wall of the sleeve, and multiple groups of connecting columns are respectively inserted into the multiple groups of perforations on the sleeve; the sleeve is sleeved on the tube body, and the protective layer is hammered so that the multiple groups of convex rings on the tube body are respectively clamped in the multiple groups of annular grooves on the inner wall of the sleeve, and the sleeve is located between the two groups of tube bodies, and the two groups of tube bodies are simply connected, and then the multiple groups of connecting columns are respectively inserted into the multiple groups of perforations on the sleeve, and then the hard cable protection tube connection device is used to drive the sleeve to rotate, so that the multiple groups of connecting columns melt, and the sleeve is connected to the two groups of tube bodies together, and then the above steps are repeated to connect the multiple groups of tube bodies together to form a complete protective pipeline to protect the cable, thereby improving the practicality of the equipment.

[0011] Preferably, the tube body, the convex ring, the sleeve and the connecting column are made of the same material, thereby improving the connection effect of the tube body, the convex ring, the sleeve and the connecting column.

[0012] A hard cable protection tube connection device of the present invention comprises a driving mechanism, a limiting mechanism and a clamping mechanism, wherein the driving mechanism is mounted on the limiting mechanism;

[0013] The clamping mechanism clamps the sleeve and the two groups of protective layers, the limiting mechanism limits the clamping mechanism, and the driving mechanism drives the clamping mechanism to rotate; the clamping mechanism is put on the sleeve and the two groups of hexagonal sleeves, and multiple groups of connecting columns are squeezed, and then the clamping mechanism is clamped by the limiting mechanism, and then the driving mechanism is opened to drive the clamping mechanism to rotate rapidly, so that the multiple groups of connecting columns are rubbed with the multiple groups of convex rings on the tube body respectively, so that the contact surface between the connecting column and the convex ring is melted, and then the rotation of the sleeve is quickly stopped, and the melted position of the connecting column and the convex ring is waited for to cool down, and the two groups of tube bodies and the sleeve are connected together, thereby improving the practicality of the hard cable protection tube connection device.

[0014] Preferably, the limiting mechanism includes a handle, a support box, two groups of brackets, two groups of first electric cylinders, multiple groups of limiting wheels and multiple groups of limiting plates, the handle is installed on the support box, the left parts of the two groups of brackets are rotatably installed in the support box, and the left parts of the two groups of brackets are rotatably connected to each other, one end of the two groups of first electric cylinders are rotatably installed inside the support box, and the other ends of the two groups of first electric cylinders are respectively rotatably installed on the left parts of the two groups of brackets, multiple groups of limiting wheels are respectively rotatably installed on the right parts of the two groups of brackets, and multiple groups of limiting plates are respectively installed on the front ends of the two groups of limiting wheels on the front side and the rear ends of the two groups of limiting wheels on the rear side; after the clamping mechanism is sleeved on the sleeve and the two groups of hexagonal sleeves, the right parts of the two groups of brackets are closed by controlling the extension of the two groups of first electric cylinders, the clamping mechanism is clamped by the multiple groups of limiting wheels cooperating with the driving mechanism, and the clamping mechanism is limited by the multiple groups of limiting plates, thereby improving the practicality of the hard cable protection tube connection device.

[0015] Preferably, the driving mechanism includes gears, a transmission, a driving motor, a second electric cylinder, multiple groups of guide rings, a connecting rod and a brake disc. The gear is rotatably installed on the right part of the support box, the transmission is fixedly installed on the support box, and the output end of the transmission is connected to the front end of the gear, the driving motor is installed on the transmission, and the output shaft of the driving motor is connected to the input end of the transmission, the second electric cylinder and the multiple groups of guide rings are both installed on the support box, one end of the connecting rod is installed on one end of the second electric cylinder, the other end of the connecting rod passes through the multiple groups of guide rings, and the brake disc is installed on the other end of the connecting rod; the gear is meshed with the clamping mechanism, and then the driving motor is turned on, and the transmission is used to drive the gear to rotate, so that the gear drives the clamping mechanism to rotate rapidly, and when the friction surface of the connecting column and the convex ring is sufficiently melted, the driving motor is turned off, and at the same time, the second electric cylinder is extended to allow the multiple groups of guide rings to guide and limit the connecting rod, and then the brake disc squeezes the rear of the gear to quickly stop the gear from rotating, thereby improving the practicality of the hard cable protection tube connection device.

[0016] Preferably, the handle includes a grip, two sets of fixing plates and bolts, one end of the grip is rotatably mounted on the support box, and a limiting hole is provided on the support box, the two sets of fixing plates are fixedly mounted on the front and rear ends of the grip respectively, and the two sets of fixing plates are provided with multiple sets of threaded holes, and the bolts are threadedly installed in the threaded holes of the two sets of fixing plates; according to the construction position or the size of the construction space, the grip is rotated to adjust the angle between the grip and the support box, and then the bolts are passed through the front fixing plate, the limiting hole on the support box and the rear bolt in turn to fix the angle of the grip, and the staff then holds the grip to rotate the clamping mechanism through the limiting mechanism and the driving mechanism, thereby improving the practicability of the hard cable protection tube connection device.

[0017] Preferably, the clamping mechanism comprises two groups of arc-shaped fixing frames, multiple groups of clamping frames, multiple groups of baffles, two groups of arc-shaped racks, multiple groups of springs and multiple groups of extrusion plates, the multiple groups of clamping frames are respectively mounted on the inner walls of the two groups of arc-shaped fixing frames, the multiple groups of baffles are respectively mounted on the side ends of the multiple groups of clamping frames, the two groups of arc-shaped racks are respectively mounted on the outer walls of the two groups of arc-shaped fixing frames, one end of the multiple groups of springs are respectively mounted on the inner walls of the multiple groups of arc-shaped fixing frames, and the multiple groups of extrusion plates are respectively mounted on the other ends of the multiple groups of springs; the two groups of arc-shaped fixing frames are buckled on the sleeve , so that multiple groups of clamping frames clamp the two groups of hexagonal sleeves respectively, and use multiple groups of baffles to limit the two groups of arc-shaped fixing frames respectively, and then use multiple groups of limiting wheels to cooperate with gears to clamp the two groups of arc-shaped fixing frames, and through the elasticity of multiple groups of springs, multiple groups of extrusion plates respectively extrude multiple groups of connecting columns, and then through the meshing transmission of gears and arc-shaped racks, drive the two groups of arc-shaped fixing frames to drive the sleeves to rotate rapidly, so that the contact surfaces of the multiple groups of connecting columns and the multiple groups of convex rings are melted respectively, thereby improving the practicality of the hard cable protection tube connection device.

[0018] Preferably, one group of the two groups of arc-shaped fixing frames is provided with multiple groups of limiting grooves, and the other group of arc-shaped fixing frames is provided with multiple groups of protrusions; after the two groups of arc-shaped fixing frames are buckled on the sleeve, the multiple groups of protrusions on the other group of arc-shaped fixing frames are respectively inserted into the multiple groups of limiting grooves on one group of arc-shaped fixing frames, thereby improving the stability of the clamping mechanism.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In the early stage of construction, multiple groups of pipe bodies are simply connected by rigid connection between the casing and the pipe body, which is convenient for the insertion of cables. When the insertion is blocked, some casings can be directly separated from the pipe body for inspection, and then the pipe body, convex ring, casing and connecting column are connected by friction melting to improve the sealing effect and connection effect between multiple groups of pipe bodies;

[0021] 2. Through the setting of the hexagonal sleeve and the cooperation of the clamping mechanism, it is convenient to quickly drive the sleeve to rotate and improve the connection effect;

[0022] 3. By adjusting the angle between the handle and the support box, it is convenient to carry out construction in different construction environments and spaces of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure in the first axonometric state during construction of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure in the second axonometric state during construction of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the state when the clamping mechanism of the present invention clamps the sleeve;

[0026] Figure 4 It is a schematic diagram of the state structure when the sleeve of the present invention is sleeved on two groups of pipe bodies;

[0027] Figure 5 It is a schematic diagram of the axonometric structure of the tube body of the present invention;

[0028] Figure 6 It is a schematic diagram of the axonometric structure of the connecting mechanism of the present invention;

[0029] Figure 7 It is a schematic diagram of the axonometric structure of the clamping mechanism of the present invention;

[0030] Figure 8 It is a schematic diagram of the front cross-sectional structure of the arc-shaped fixing frame of the present invention;

[0031] Fig. 9 It is an axonometric enlarged structural schematic diagram of the arc-shaped fixing frame and the clamping frame and other structures of the present invention;

[0032] Fig.10 It is a first isometric structural schematic diagram of the driving mechanism and the limiting mechanism of the present invention;

[0033] Fig.11 It is a second isometric structural schematic diagram of the driving mechanism and the limiting mechanism of the present invention;

[0034] Fig.12 The present invention Fig.11 A schematic diagram of the enlarged structure of part A;

[0035] Fig.13 It is a front view cross-sectional structural schematic diagram of the driving mechanism and the limiting mechanism of the present invention.

[0036] Markings in the accompanying drawings: 1. tube body; 2. convex ring; 3. sleeve; 4. hexagonal sleeve; 5. protective layer; 6. connecting column; 7. annular groove; 11. handle; 12. support box; 13. bracket; 14. first electric cylinder; 15. limiting wheel; 16. limiting plate; 17. gear; 18. transmission; 19. driving motor; 20. second electric cylinder; 21. guide ring; 22. connecting rod; 23. brake disc; 24. handle; 25. fixing plate; 26. bolt; 27. arc fixing frame; 28. clamping frame; 29. ​​baffle; 30. arc rack; 31. spring; 32. extrusion plate; 33. limiting groove; 34. protrusion. DETAILED DESCRIPTION

[0037] In order to facilitate understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0038] Example 1: Figures 1 to 13 As shown, a hard cable protection tube and a connecting device include a supporting mechanism; and a connecting mechanism, wherein the connecting mechanism is sleeved on the supporting mechanism;

[0039] The supporting mechanism protects the cable, and the connecting mechanism seals the connection between the two sets of supporting mechanisms;

[0040] The support mechanism comprises a tube body 1 and a plurality of convex rings 2, wherein the plurality of convex rings 2 are respectively installed at both ends of the tube body 1;

[0041] The connection mechanism includes a sleeve 3, two groups of hexagonal sleeves 4, two groups of protective layers 5 and multiple groups of connecting columns 6. The sleeve 3 is sleeved on the pipe body 1, the two groups of hexagonal sleeves 4 are sleeved on the sleeve 3, the two groups of protective layers 5 are respectively installed on the two groups of hexagonal sleeves 4, and the sleeve 3 is provided with multiple groups of perforations, the inner wall of the sleeve 3 is provided with multiple groups of annular grooves 7, and the multiple groups of connecting columns 6 are respectively inserted into the multiple groups of perforations on the sleeve 3; the pipe body 1, the convex ring 2, the sleeve 3 and the connecting columns 6 are made of the same material;

[0042] It includes a driving mechanism, a limiting mechanism and a clamping mechanism, wherein the driving mechanism is installed on the limiting mechanism;

[0043] The clamping mechanism clamps the sleeve 3 and the two sets of protective layers 5, the limiting mechanism limits the clamping mechanism, and the driving mechanism drives the clamping mechanism to rotate;

[0044] The limiting mechanism includes a handle 11, a support box 12, two groups of brackets 13, two groups of first electric cylinders 14, multiple groups of limiting wheels 15 and multiple groups of limiting plates 16. The handle 11 is installed on the support box 12. The left parts of the two groups of brackets 13 are both rotatably installed in the support box 12, and the left parts of the two groups of brackets 13 are rotatably connected to each other. One end of the two groups of first electric cylinders 14 is rotatably installed inside the support box 12, and the other ends of the two groups of first electric cylinders 14 are respectively rotatably installed on the left parts of the two groups of brackets 13. Multiple groups of limiting wheels 15 are respectively rotatably installed on the right parts of the two groups of brackets 13, and multiple groups of limiting plates 16 are respectively installed on the front ends of the two groups of limiting wheels 15 on the front side and the rear ends of the two groups of limiting wheels 15 on the rear side;

[0045] The driving mechanism includes a gear 17, a transmission 18, a driving motor 19, a second electric cylinder 20, multiple sets of guide rings 21, a connecting rod 22 and a brake disc 23. The gear 17 is rotatably mounted on the right part of the support box 12, the transmission 18 is fixedly mounted on the support box 12, and the output end of the transmission 18 is connected to the front end of the gear 17, the driving motor 19 is mounted on the transmission 18, and the output shaft of the driving motor 19 is connected to the input end of the transmission 18, the second electric cylinder 20 and the multiple sets of guide rings 21 are both mounted on the support box 12, one end of the connecting rod 22 is mounted on one end of the second electric cylinder 20, the other end of the connecting rod 22 passes through the multiple sets of guide rings 21, and the brake disc 23 is mounted on the other end of the connecting rod 22;

[0046] The handle 11 includes a grip 24, two sets of fixing plates 25 and a bolt 26. One end of the grip 24 is rotatably mounted on the support box 12, and a limiting hole is provided on the support box 12. The two sets of fixing plates 25 are respectively fixedly mounted on the front end and the rear end of the grip 24, and the two sets of fixing plates 25 are each provided with a plurality of sets of threaded holes, and the bolt 26 is threadedly mounted in the threaded holes of the two sets of fixing plates 25.

[0047] The clamping mechanism includes two groups of arc-shaped fixing frames 27, multiple groups of clamping frames 28, multiple groups of baffles 29, two groups of arc-shaped racks 30, multiple groups of springs 31 and multiple groups of extrusion plates 32. The multiple groups of clamping frames 28 are respectively mounted on the inner walls of the two groups of arc-shaped fixing frames 27, the multiple groups of baffles 29 are respectively mounted on the side ends of the multiple groups of clamping frames 28, the two groups of arc-shaped racks 30 are respectively mounted on the outer walls of the two groups of arc-shaped fixing frames 27, one end of the multiple groups of springs 31 are respectively mounted on the inner walls of the multiple groups of arc-shaped fixing frames 27, and the multiple groups of extrusion plates 32 are respectively mounted on the other ends of the multiple groups of springs 31;

[0048] The sleeve 3 is put on the pipe body 1, and the protective layer 5 is hammered to make the multiple groups of convex rings 2 on the pipe body 1 respectively clamped in the multiple groups of annular grooves 7 on the inner wall of the sleeve 3, and the sleeve 3 is located between the two groups of pipe bodies 1, and the two groups of pipe bodies 1 are simply connected. According to the construction position or the size of the construction space, the handle 24 is rotated to adjust the angle between the handle 24 and the support box 12, and then the bolts 26 are passed through the front fixing plate 25, the limiting holes on the support box 12 and the rear bolts 26 in sequence to fix the angle of the handle 24, and then the multiple groups of connecting columns 6 are respectively inserted into the multiple groups of through holes on the sleeve 3, and then the two groups of arc fixing frames 27 are buckled on the sleeve 3, so that the multiple groups of clamping frames 28 clamp the two groups of hexagonal sleeves 4 respectively, and the two groups of arc fixing frames 27 are limited by multiple groups of baffles 29, and then the two groups of first electric cylinders 14 are controlled to extend. The right part of the bracket 13 is closed, and the two groups of arc-shaped fixing frames 27 are clamped by multiple groups of limiting wheels 15 and gears 17, and the gears 17 are meshed with the two groups of arc-shaped racks 30. The staff then holds the handle 24, turns on the drive motor 19, and drives the gear 17 to rotate through the transmission 18, so that the gear 17 drives the clamping mechanism to rotate rapidly. When the friction surface of the connecting column 6 and the convex ring 2 is sufficiently melted, the drive motor 19 is turned off, and at the same time, the second electric cylinder 20 is extended to guide and limit the connecting rod 22 by multiple groups of guide rings 21, and then the brake disc 23 is used to squeeze the rear part of the gear 17 to stop the rotation of the gear 17 quickly. After the melted position is cooled, the sleeve 3 is connected to the two groups of pipe bodies 1, and then the above steps are repeated to connect the multiple groups of pipe bodies 1 together to form a complete protective pipeline to protect the cable, thereby improving the construction convenience and the protection effect of the cable.

[0049] Example 2: Figures 1 to 13 As shown, a hard cable protection tube and a connecting device, based on Example 1, further include:

[0050] One of the two groups of arc-shaped fixing frames 27 is provided with a plurality of groups of limiting grooves 33, and the other group of arc-shaped fixing frames 27 is provided with a plurality of groups of protrusions 34;

[0051] The sleeve 3 is put on the pipe body 1, and the protective layer 5 is hammered to make the multiple groups of convex rings 2 on the pipe body 1 respectively clamped in the multiple groups of annular grooves 7 on the inner wall of the sleeve 3. At the same time, the sleeve 3 is located between the two groups of pipe bodies 1. The two groups of pipe bodies 1 are simply connected. According to the construction position or the size of the construction space, the handle 24 is turned to adjust the angle between the handle 24 and the support box 12, and then the bolt 26 is passed through the front fixing plate 25 and the limit on the support box 12 in sequence. The plurality of connecting columns 6 are respectively inserted into the plurality of through holes on the sleeve 3, and then the two sets of arc-shaped fixing frames 27 are buckled on the sleeve 3, so that the plurality of protrusions 34 on the other set of arc-shaped fixing frames 27 are respectively inserted into the plurality of limiting grooves 33 on the one set of arc-shaped fixing frames 27, so that the plurality of clamping frames 28 clamp the two sets of hexagonal sleeves 4, and the plurality of baffles 29 are respectively used to limit the two sets of arc-shaped fixing frames 27. The two sets of arc-shaped fixing frames 27 are clamped by controlling the extension of the two sets of first electric cylinders 14, and the gears 17 are used to mesh with the two sets of arc-shaped racks 30. The staff then holds the handle 24, turns on the drive motor 19, and drives the gear 17 to rotate through the transmission 18, so that the gear 17 drives the clamping mechanism to rotate rapidly. When the friction surface of the connecting column 6 and the convex ring 2 is sufficiently melted, the drive motor 19 is turned off, and the second electric cylinder 20 is extended at the same time, so that the multiple guide rings 21 guide and limit the connecting rod 22, and then the brake disc 23 squeezes the rear part of the gear 17 to stop the gear 17 from rotating rapidly. After the melted position is cooled, the sleeve 3 is connected to the two sets of pipe bodies 1, and the above steps are repeated to connect the multiple sets of pipe bodies 1 together to form a complete protective pipeline to protect the cable, thereby improving the construction convenience and the protection effect of the cable.

[0052] The main functions achieved by the present invention are: improving the sealing effect and the connection effect, improving the rotation stability, and improving the convenience of construction;

[0053] 1. Improve the sealing effect and connection effect: In the early stage of construction, the multiple groups of pipe bodies 1 are simply connected by rigidly connecting the sleeve 3 with the pipe body 1, which is convenient for inserting the cable. When the insertion is blocked, part of the sleeve 3 can be directly separated from the pipe body 1 for inspection, and then the pipe body 1, the convex ring 2, the sleeve 3 and the connecting column 6 are connected by friction melting, thereby improving the sealing effect and connection effect between the multiple groups of pipe bodies 1;

[0054] 2. Improve rotation stability: Through the setting of the hexagonal sleeve 4 and the cooperation of the clamping mechanism, it is convenient to quickly drive the sleeve 3 to rotate and improve the connection effect;

[0055] 3. Improve construction convenience: by adjusting the angle between the handle 11 and the support box 12, it is convenient to carry out construction in different construction environments and spaces of different sizes.

[0056] The installation method, connection method or setting method of a hard cable protection tube and a connecting device of the present invention are all common mechanical methods, and they can be implemented as long as they can achieve their beneficial effects; the first electric cylinder 14, the transmission 18, the drive motor 19 and the second electric cylinder 20 of a hard cable protection tube and a connecting device of the present invention are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manual, without the need for creative labor by technicians in this field.

[0057] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A connection device for a rigid cable protection tube, characterized in that: It includes a driving mechanism, a limiting mechanism and a clamping mechanism, wherein the driving mechanism is installed on the limiting mechanism; The clamping mechanism clamps the sleeve (3) and the two sets of protective layers (5), the limiting mechanism limits the clamping mechanism, and the driving mechanism drives the clamping mechanism to rotate; The limiting mechanism comprises a handle (11), a support box (12), two groups of brackets (13), two groups of first electric cylinders (14), a plurality of groups of limiting wheels (15) and a plurality of groups of limiting plates (16); the handle (11) is mounted on the support box (12); the left parts of the two groups of brackets (13) are both rotatably mounted in the support box (12); and the left parts of the two groups of brackets (13) are rotatably connected to each other; one end of the two groups of first electric cylinders (14) are both rotatably mounted inside the support box (12); the other ends of the two groups of first electric cylinders (14) are respectively rotatably mounted on the left parts of the two groups of brackets (13); the plurality of groups of limiting wheels (15) are respectively rotatably mounted on the right parts of the two groups of brackets (13); and the plurality of groups of limiting plates (16) are respectively mounted on the front ends of the two groups of limiting wheels (15) on the front side and the rear ends of the two groups of limiting wheels (15) on the rear side; The driving mechanism comprises a gear (17), a transmission (18), a driving motor (19), a second electric cylinder (20), a plurality of guide rings (21), a connecting rod (22) and a brake disc (23); the gear (17) is rotatably mounted on the right part of the support box (12); the transmission (18) is fixedly mounted on the support box (12), and the output end of the transmission (18) is connected to the front end of the gear (17); the driving motor (19) is mounted on the transmission (18), and the output shaft of the driving motor (19) is connected to the input end of the transmission (18); the second electric cylinder (20) and the plurality of guide rings (21) are both mounted on the support box (12); one end of the connecting rod (22) is mounted on one end of the second electric cylinder (20), and the other end of the connecting rod (22) passes through the plurality of guide rings (21); and the brake disc (23) is mounted on the other end of the connecting rod (22); The clamping mechanism comprises two groups of arc-shaped fixing frames (27), multiple groups of clamping frames (28), multiple groups of baffles (29), two groups of arc-shaped racks (30), multiple groups of springs (31) and multiple groups of extrusion plates (32), the multiple groups of clamping frames (28) are respectively mounted on the inner walls of the two groups of arc-shaped fixing frames (27), the multiple groups of baffles (29) are respectively mounted on the side ends of the multiple groups of clamping frames (28), the two groups of arc-shaped racks (30) are respectively mounted on the outer walls of the two groups of arc-shaped fixing frames (27), one end of the multiple groups of springs (31) are respectively mounted on the inner walls of the multiple groups of arc-shaped fixing frames (27), and the multiple groups of extrusion plates (32) are respectively mounted on the other ends of the multiple groups of springs (31); The hard cable protection tube comprises a supporting mechanism and a connecting mechanism, wherein the connecting mechanism is sleeved on the supporting mechanism; The supporting mechanism protects the cable, and the connecting mechanism seals the connection between the two groups of supporting mechanisms; The support mechanism comprises a tube body (1) and a plurality of groups of convex rings (2), wherein the plurality of groups of convex rings (2) are respectively mounted on both ends of the tube body (1); The connection mechanism comprises a sleeve (3), two groups of hexagonal sleeves (4), two groups of protective layers (5) and a plurality of groups of connecting columns (6); the sleeve (3) is sleeved on the tube body (1); the two groups of hexagonal sleeves (4) are sleeved on the sleeve (3); the two groups of protective layers (5) are respectively installed on the two groups of hexagonal sleeves (4); the sleeve (3) is provided with a plurality of groups of through holes; the inner wall of the sleeve (3) is provided with a plurality of groups of annular grooves (7); and the plurality of groups of connecting columns (6) are respectively inserted into the plurality of groups of through holes on the sleeve (3).

2. The connection device for the hard cable protection tube according to claim 1, characterized in that: The pipe body (1), the convex ring (2), the sleeve (3) and the connecting column (6) are made of the same material.

3. The connection device for the hard cable protection tube according to claim 1, characterized in that: The handle (11) comprises a grip (24), two sets of fixing plates (25) and a bolt (26); one end of the grip (24) is rotatably mounted on a support box (12), and a limiting hole is provided on the support box (12); the two sets of fixing plates (25) are respectively fixedly mounted on the front end and the rear end of the grip (24), and the two sets of fixing plates (25) are each provided with a plurality of sets of threaded holes, and the bolt (26) is threadedly mounted in the threaded holes of the two sets of fixing plates (25).

4. The connection device for the hard cable protection tube according to claim 1, characterized in that: One of the two groups of arc-shaped fixing frames (27) is provided with a plurality of groups of limiting grooves (33), and the other group of arc-shaped fixing frames (27) is provided with a plurality of groups of protrusions (34).

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