A protection device for cables during dragging

Abstract

The utility model discloses a kind of protective devices for cable dragging, it is related to cable technical field, including core and coaxially wrapping insulating layer on the outer periphery of core, further include: annular support frame, its inner ring is coaxially fixed on the outer wall surface of insulating layer;Annular guide frame, it is coaxially fixed connection with the outer ring of annular support frame, and outer ring is circumferentially provided with annular guide groove, two symmetrically arranged wear-preventing frame, the buckle of one end fixed mounting of each wear-preventing frame is set, the other end is provided with the clamping slot compatible with buckle, two wear-preventing frame are inserted with the clamping slot of another wear-preventing frame corresponding by the buckle of wear-preventing frame setting, form complete torus;Through the quick docking and rotating design of wear-preventing frame, realize cable wear-prevention protection and post-convenient maintenance, reduce insulating layer abrasion, solve the problem that existing cable causes friction to cable, damages surface, reduces service life when cable pay-off dragging, ground sand.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, specifically a protective device for cable dragging. Background Technology

[0002] Cables are the core carriers for power transmission and signal transmission, and are widely used in power systems, communication engineering, industrial production and construction. Their typical structure includes a conductive conductor (mostly copper / aluminum core, to ensure transmission efficiency), an insulation layer (rubber, plastic and other materials, to prevent leakage), and a protective layer (to resist mechanical damage and environmental corrosion). Some cables contain fillers to optimize the structure, and have the characteristics of stable transmission, temperature and corrosion resistance, and safety and reliability. They are the infrastructure for power supply and information exchange in modern society. For example, the utility model patent with announcement number CN223347543U discloses a medium-voltage fire-resistant cable, which includes a cable body. The cable body is provided with a sheath layer, an armor layer, a fire-resistant layer, an oxygen barrier layer, a shielding layer and a conductor from the outside to the inside. The armor layer is provided with multiple sets of Ω shape memory alloy skeletons and multiple sets of plugs. This utility model enhances the stability of the internal structure, extends the cable's complete power supply time in flames, improves the reliability of power supply during fires, and ensures the continuous operation of critical equipment. However, when this type of cable is being laid out and dragged, the sand and soil on the ground will cause friction on the cable, damaging the surface and reducing its service life. In addition, it has no protective structure and is easily damaged by external impacts. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a protective device for cable dragging, which solves the technical problems of existing devices causing friction between the cable and the ground sand during cable dragging, damaging the surface, reducing service life, and lacking a protective structure, making them easily damaged by external impacts.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A protective device for cable dragging includes a conductor and an insulating layer coaxially wrapped around the periphery of the conductor, and further includes: A ring-shaped support frame, the inner ring of which is coaxially fixed to the outer wall of the insulating layer; An annular guide frame is coaxially and fixedly connected to the outer ring of an annular support frame, and an annular guide groove is provided on the outer ring circumferentially. Two symmetrically arranged anti-wear frames, each with a buckle fixedly installed at one end and a slot adapted to the buckle at the other end, the two anti-wear frames are connected and engaged by the buckle on one anti-wear frame and the slot on the other anti-wear frame to form a complete ring; The wear-resistant frame is rotatably connected to the annular guide groove.

[0005] Preferably, two protective shells are fitted on the insulating layer. Each protective shell has a limit block fixedly installed at one end and a limit groove adapted to the limit block at the other end. The two protective shells are connected and engaged through the limit block set on one protective shell and the limit groove set on the other protective shell.

[0006] Preferably, a limit ring is fixedly installed at one end of each of the two protective shells, and a limit plate is fixedly installed at the other end of each of the two protective shells. Locking sleeves are fitted onto the outer walls of the two protective shells.

[0007] Preferably, the inner ring of the annular guide frame has an internal thread, the annular support frame has two limiting holes that are adapted to the insertion of the limiting plate, the locking sleeve has an annular groove adapted to the limiting ring, and the connecting end of the locking sleeve has an external thread that engages with the internal thread.

[0008] Preferably, the outer wall surface of the locking sleeve is provided with several anti-slip grooves.

[0009] Preferably, the locking sleeve consists of two symmetrical half-sleeves, the mating surfaces of the two half-sleeves are snapped together to form a complete locking sleeve, and the outer walls of the two half-sleeves together form a complete external thread and anti-slip groove.

[0010] Preferably, the slot has an assembly chamfer.

[0011] Beneficial effects This utility model provides a protective device for cable dragging, which has the following beneficial effects: The anti-abrasion frame's quick docking and rotation design enables cable abrasion protection and convenient maintenance, reducing insulation wear. At the same time, the anti-abrasion frame supports the wire core, reducing the area affected by water immersion. This solves the problem that existing cables are damaged by friction from ground sand and soil during cable laying and dragging, thus reducing their service life. By using the protective shell docking positioning and locking sleeve for double fixation, the cable insulation layer is protected against collisions and sealed, making it suitable for open-ground installation scenarios and solving the problem that existing cables lack protective structures and are easily damaged by external impacts. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the annular guide frame structure of this utility model; Figure 3 This is a schematic diagram of the anti-wear frame structure of this utility model; Figure 4 This is a schematic diagram of the protective shell structure of this utility model; Figure 5 This is a schematic diagram of the locking sleeve structure of this utility model.

[0013] In the diagram: 1. Core wire; 2. Insulation layer; 3. Annular support frame; 4. Annular guide frame; 5. Internal thread; 6. Annular guide groove; 7. Anti-wear frame; 8. Buckle; 9. Slot; 10. Protective shell; 11. Limiting block; 12. Limiting groove; 13. Limiting ring; 14. Limiting plate; 15. Locking sleeve; 16. Limiting hole; 17. Annular groove; 18. External thread; 20. Anti-slip groove; 21. Assembly chamfer. Detailed Implementation

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0015] Please see Figures 1-5 A protective device for cable dragging includes a conductor 1 and an insulation layer 2 coaxially wrapped around the outer periphery of the conductor 1. It also includes: an annular support frame 3, the inner ring of which is coaxially fixed to the outer wall of the insulation layer 2; an annular guide frame 4, which is coaxially fixedly connected to the outer ring of the annular support frame 3, and the outer ring has an annular guide groove 6 circumferentially formed; two symmetrically arranged anti-abrasion frames 7, each with a buckle 8 fixedly installed at one end and a slot 9 adapted to the buckle 8 at the other end. The two anti-abrasion frames 7 are connected by the buckle 8 of one anti-abrasion frame and the slot 9 of the other anti-abrasion frame 7, forming a complete ring; the anti-abrasion frame 7 is rotatably connected to the annular guide groove 6.

[0016] In use, the conductor 1 is the conductive core of the cable, and the insulation layer 2 provides electrical insulation protection. The annular support frame 3 provides stable support for the outer protective structure. The annular guide frame 4 can be connected to the locking sleeve 15 through the internal thread 5, and its annular guide groove 6 provides a rotation track for the anti-wear frame 7. The two anti-wear frames 7 are quickly connected by the buckle 8 and the slot 9 to form an annular protective layer, which directly resists external friction and can rotate along the annular guide groove 6. The cooperation between the buckle 8 and the slot 9 makes the anti-wear frame 7 easy to disassemble and assemble, and convenient for later replacement and maintenance. The conductor 1 is supported by the anti-wear frame 7, which reduces the contact area between the insulation layer 2 and the ground and avoids water immersion and sand scratches.

[0017] Please see Figure 4 Two protective shells 10 are fitted on the insulating layer 2. Each protective shell 10 has a limiting block 11 fixedly installed at one end and a limiting groove 12 adapted to the limiting block 11 at the other end. The two protective shells 10 are connected and engaged through the limiting block 11 set in one protective shell 10 and the limiting groove 12 set in the other protective shell 10.

[0018] When in use, the protective shell 10 provides secondary protection for the outside of the insulation layer 2 when the wire core 1 needs to be pulled by cable laying. It can resist external impacts such as collisions and squeezing, and protect the insulation layer 2 and the wire core 1. The plug-in cooperation between the limiting block 11 and the limiting groove 12 ensures that the two protective shells 10 are accurately connected to form a closed protective space, avoiding misalignment that could lead to protective gaps, while also improving the assembly efficiency of the protective shell 10.

[0019] Please see Figure 4 Each of the two protective shells 10 has a limit ring 13 fixedly installed at one end and a limit plate 14 fixedly installed at the other end. The outer walls of the two protective shells 10 are fitted with locking sleeves 15.

[0020] In use, the locking sleeve 15, in conjunction with the limiting ring 13, restricts the sliding range of the limiting plate 14 to prevent the two protective shells 10 from falling off. The locking sleeve 15 can further fit and fix the two protective shells 10 after docking, preventing the protective shells 10 from separating when the cable shakes, thus enhancing the integrity and stability of the protective structure.

[0021] Please see Figure 4 The inner ring of the annular guide frame 4 has an internal thread 5, and the annular support frame 3 has two limiting holes 16 that are compatible with the limiting plate 14. The locking sleeve 15 has an annular groove 17 that is compatible with the limiting ring 13. The connecting end of the locking sleeve 15 has an external thread 18 that engages with the internal thread 5.

[0022] In use, the limiting plate 14 is inserted into the limiting hole 16 to achieve precise positioning of the protective shell 10 and the annular support frame 3, preventing the protective shell 10 from sliding radially; the locking sleeve 15 is screwed into the internal thread 5 of the annular guide frame 4 through the external thread 18, and at the same time the annular groove 17 is engaged with the limiting ring 13, forming a double locking of "threaded fixing + limiting engagement", which firmly fixes the protective shell 10 on the annular support frame 3, ensuring that the protective shell 10 does not loosen during long-term use of the cable.

[0023] Please see Figure 4 The outer wall of the locking sleeve 15 is provided with several anti-slip grooves 20. When in use, the anti-slip grooves 20 increase the friction between the hand and the locking sleeve 15, making it easier for the operator to apply force when tightening or loosening the locking sleeve 15, and avoiding the impact on operating efficiency due to hand slippage.

[0024] Please see Figure 5 The locking sleeve 15 consists of two symmetrical half-sleeves. The mating surfaces of the two half-sleeves are snapped together to form a complete locking sleeve 15. The outer walls of the two half-sleeves together form a complete external thread 18 and an anti-slip groove 20.

[0025] Please see Figure 3The slot 9 has an assembly chamfer 21. When in use, the assembly chamfer 21 guides the buckle 8 to be smoothly inserted into the slot 9, reducing the difficulty of alignment when the two anti-wear brackets 7 are connected, making the insertion process smoother, reducing damage to the buckle 8 or the slot 9 caused by hard contact, and improving the assembly convenience and component life of the anti-wear bracket 7.

[0026] Example 1: In this example, the cable is protected against abrasion and is conveniently maintained in the later stage by the quick docking and rotation design of the anti-abrasion frame 7, thereby reducing the wear of the insulation layer 2.

[0027] Specifically, during installation, the two anti-wear brackets 7 are connected to the slots 9 at the other end via clips 8 at one end. The chamfered corner 21 of the slot 9 guides the clips 8 to insert smoothly and quickly form a complete ring. The anti-wear bracket 7 is rotatably connected to the annular guide groove 6 of the annular guide bracket 4. In use, the anti-wear bracket 7 directly contacts the ground, pipes, etc., supporting the cable as a whole, significantly reducing the contact friction area of ​​the insulation layer 2 and preventing water immersion and sand abrasion. When the cable is dragged, the anti-wear bracket 7 can rotate flexibly along the annular guide groove 6 to counteract the friction generated by dragging, further reducing wear. For later maintenance, simply separate the clips 8 and slots 9 to remove and replace the anti-wear bracket 7 without disassembling other structures, making the operation highly efficient.

[0028] Example 2: In this example, the cable insulation layer 2 is protected against collisions by the docking positioning of the protective shell 10 and the double fixation of the locking sleeve 15, which is suitable for the scenario of cable laying and dragging.

[0029] Specifically, first, symmetrically place two protective shells 10 onto the insulation layer 2, aligning the limiting block 11 of one protective shell 10 with the limiting groove 12 of the other protective shell 10, and insert them to form a closed protective space, ensuring complete coverage of the insulation layer 2 area to be protected. Push the protective shell 10 towards the annular support frame 3, so that the limiting plate 14 at the end of the protective shell 10 is precisely inserted into the limiting hole 16 of the annular support frame 3, completing the positioning of the protective shell 10. Take two symmetrical half-set locking sleeves 15, align the annular groove 17 with the limiting ring 13, and fasten them to the outer wall of the protective shell 10 from both sides, forming a complete locking sleeve 15 through the snap-fit ​​structure of the mating surface. Grasp the anti-slip groove 20 on the outer wall of the locking sleeve 15 and apply force to screw the external thread 18 of the locking sleeve 15 into the internal thread 5 of the annular guide frame 4, forming a double locking of "threaded fixing + limiting snap-fit". During locking, the limiting plate 14 automatically adjusts in the limiting hole 16.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protective device for cable dragging, comprising a conductor (1) and an insulating layer (2) coaxially wrapped around the periphery of the conductor (1), characterized in that, Also includes: The inner ring of the ring support frame (3) is coaxially fixed to the outer wall of the insulating layer (2); The annular guide frame (4) is coaxially and fixedly connected to the outer ring of the annular support frame (3), and the outer ring is provided with an annular guide groove (6) in the circumferential direction. Two symmetrically arranged anti-wear frames (7) are provided. Each anti-wear frame (7) has a buckle (8) fixedly installed at one end and a slot (9) adapted to the buckle (8) at the other end. The two anti-wear frames (7) are connected and engaged by the buckle (8) provided in one anti-wear frame (7) and the slot (9) provided in the other anti-wear frame (7) to form a complete ring. The wear-resistant frame (7) is rotatably connected to the annular guide groove (6).

2. The protective device for cable dragging according to claim 1, characterized in that, Two protective shells (10) are fitted on the insulating layer (2). Each protective shell (10) has a limiting block (11) fixedly installed at one end and a limiting groove (12) adapted to the limiting block (11) at the other end. The two protective shells (10) are connected and engaged with the limiting groove (12) of the other protective shell (10) through the limiting block (11) set in one protective shell (10).

3. A protective device for cable dragging according to claim 2, characterized in that, One end of each of the two protective shells (10) is fixedly installed with a limiting ring (13), and the other end is fixedly installed with a limiting plate (14). The outer wall surface of the two protective shells (10) is fitted with a locking sleeve (15).

4. A protective device for cable dragging according to claim 3, characterized in that, The inner ring of the annular guide frame (4) has an internal thread (5), and the annular support frame (3) has two limiting holes (16) that are adapted to the insertion of the limiting plate (14). The locking sleeve (15) has a ring groove (17) that is adapted to the limiting ring (13) and the connecting end of the locking sleeve (15) has an external thread (18) that engages with the internal thread (5).

5. A protective device for cable dragging according to claim 3, characterized in that, The outer wall surface of the locking sleeve (15) is provided with several anti-slip grooves (20).

6. A protective device for cable dragging according to claim 5, characterized in that, The locking sleeve (15) consists of two symmetrical half sleeves. The mating surfaces of the two half sleeves are snapped together to form a complete locking sleeve (15). The outer walls of the two half sleeves together form a complete external thread (18) and an anti-slip groove (20).

7. A protective device for cable dragging according to claim 1, characterized in that, The slot (9) has an assembly chamfer (21).

Images