Snow accumulation prevention type flame-retardant cable

Abstract

The invention discloses a snow-accumulation-preventing flame-retardant cable, and belongs to the technical field of cables, the snow-accumulation-preventing flame-retardant cable comprises a cable body and a snow-accumulation-preventing assembly, the snow-accumulation-preventing assembly comprises a fixing sleeve, a shell, a torsion spring, a sliding plate and a driving rod, the fixing sleeve is fixed to the outer side of the cable body, the shell is rotatably connected to the outer side of the fixing sleeve, and the torsion spring is fixed between the fixing sleeve and the shell; and one end of the driving rod is rotationally connected to the outer side of the fixing sleeve, and the other end of the driving rod is rotationally connected to the bottom of the sliding plate. The falling snowflakes enable the weight of the sliding plate to be continuously increased, the sliding plate moves downwards, the shell and the sliding plate can rotate under the limitation of the driving rod, the inclination of the upper surface of the sliding plate is continuously increased, accumulated snow on the sliding plate can fall off from the sliding plate, and after the accumulated snow on the sliding plate falls off, the shell and the sliding plate can rapidly reset under the action of the torsional spring. Accumulated snow on the cable is easy to shake off, a support for erecting the cable is not easy to collapse, and the safety of the cable is improved.

Description

Technical Field

[0001] The present application relates to the technical field of cables, and in particular discloses a snow-proof flame-retardant cable. Background Art

[0002] Cables are composed of single or multiple strands of wire and an insulating sheath. There are many types, including power cables, shielded cables, control cables, signal cables, computer cables, compensation cables, coaxial cables, fire-resistant cables, high-temperature cables, marine cables, mining cables, and more.

[0003] When power is transmitted via cables, large cables are usually required due to the large power of the transmitted power, and the cables need to be installed outdoors.

[0004] In response to the above-mentioned prior art, the inventors found that when there is heavy snow in winter, a large amount of snow will cover the cables, which will greatly increase the weight of the cables and easily cause the brackets for installing the cables to collapse, thereby causing safety accidents. Summary of the Invention

[0005] In order to improve the safety of cables, the present application provides a snow-proof flame-retardant cable.

[0006] This application provides a snow-proof flame-retardant cable, which adopts the following technical solutions: A snow-proof flame-retardant cable comprises a cable body and a snow-proof component. The snow-proof component is provided in multiple groups, and the multiple groups of snow-proof components are evenly arranged axially on the outside of the cable body. The snow-proof component comprises a fixing sleeve, an outer shell, a torsion spring, a slide plate and a driving rod. The fixing sleeve is fixed to the outside of the cable body, the outer shell is rotatably connected to the outside of the fixing sleeve, the torsion spring is fixed between the fixing sleeve and the outer shell, a sliding groove is provided on the top of the outer shell, the slide plate is slidably connected in the sliding groove, one end of the driving rod is rotatably connected to the outside of the fixing sleeve, and the other end of the driving rod is rotatably connected to the bottom of the slide plate.

[0007] By adopting the above technical solution, in heavy snowy weather, snowflakes cover the skateboard, causing the weight of the skateboard to increase continuously, thereby causing the skateboard to move downward. Under the restriction of the driving rod, the shell and the skateboard will rotate, causing the inclination of the upper surface of the skateboard to continuously increase, so that the snow on the skateboard can fall from the skateboard. After the snow on the skateboard falls, the shell and the skateboard will quickly reset under the action of the torsion spring, realizing a short-time rotation of the shell and the skateboard, which can easily shake off the snow on the cable, thereby preventing the bracket for erecting the cable from collapsing, thereby improving the safety of the cable.

[0008] Optionally, two torsion springs are provided, and the two torsion springs are symmetrically arranged on both sides of the fixing sleeve, and the driving rod is located between the two torsion springs.

[0009] By adopting the above technical solution, the rotational force for resetting the shell is increased, which facilitates the resetting of the shell and the slide plate.

[0010] Optionally, the shell is provided with an abutment groove at the bottom of the slide, and an abutment plate is fixed to the bottom of the skateboard. When there is no snow on the outside of the skateboard, the abutment plate abuts against the top wall of the abutment groove of the shell.

[0011] By adopting the above technical solution, when the torsion spring resets the housing and the slide plate, the slide plate will not fall out of the slide groove, thereby improving the structural strength of the anti-snow assembly.

[0012] Optionally, a threaded sleeve is further included, wherein the spiral directions of the threads on both sides of the threaded sleeve are opposite, and first connecting rings are symmetrically fixed at both ends of the fixed sleeve, and the outer side surface of the first connecting ring is provided with a thread that matches the threaded sleeve.

[0013] By adopting the above technical solution, the threaded sleeve is rotated, and the fixed sleeves on both sides can be screwed into the threaded sleeve at the same time, thereby realizing the connection between adjacent threaded sleeves.

[0014] Optionally, the outer side surface of the threaded sleeve is threadedly connected to a first limiting shaft, the outer side surface of the first connecting ring is provided with a first limiting groove, and the first limiting shaft passes through the threaded sleeve and is inserted into the first limiting groove on the first connecting ring.

[0015] By adopting the above technical solution, the first limiting shaft passes through the threaded sleeve and is inserted into the first limiting groove on the first connecting ring, so that the threaded sleeve and the fixed sleeve will not rotate relative to each other, which facilitates the installation stability of the anti-snow assembly.

[0016] Optionally, the outer side surface of the threaded sleeve is further threadedly connected to a second limiting shaft, the outer side surface of the cable body is provided with a second limiting groove, and the second limiting shaft passes through the threaded sleeve and is inserted into the second limiting groove on the cable body.

[0017] By adopting the above technical solution, the second limiting shaft passes through the threaded sleeve and is inserted into the second limiting groove on the cable body, so that the threaded sleeve and the cable body will not rotate relative to each other, thereby preventing the fixing sleeve and the cable body from rotating relative to each other, thereby improving the installation stability of the fixing sleeve.

[0018] Optionally, a drainage hole is provided at the bottom of the shell.

[0019] By adopting the above technical solution, rainwater flowing into the shell can be easily discharged.

[0020] Optionally, the outer diameters of the first connecting ring, the outer shell and the threaded sleeve are equal.

[0021] By adopting the above technical solution, the outer diameters of the first connecting ring, the outer shell and the threaded sleeve are equal, so that the outer surface of the cable is smoother and impurities can slide off the outer surface of the cable more easily.

[0022] Optionally, the cable body includes a conductor, an insulating sleeve, a flame-retardant filling tape and a protective sleeve, the insulating sleeve is arranged on the outside of the conductor, and the flame-retardant filling tape is arranged between the insulating sleeve and the protective sleeve.

[0023] By adopting the above technical solution, a flame-retardant filling tape is provided between the insulating sleeve and the protective sleeve. When a fire occurs in the cable, the flame-retardant filling tape can absorb heat, reduce the temperature, and prevent oxygen from entering, thereby delaying the spread of the fire.

[0024] Optionally, a waterproof layer is provided on the outside of the protective sleeve.

[0025] By adopting the above technical solution, a waterproof layer is provided on the outside of the protective sleeve, which can prevent rainwater from entering the interior of the cable body, thereby improving the safety of the cable.

[0026] In summary, this application includes at least one of the following beneficial technical effects: In heavy snowy weather, snowflakes cover the slide, causing the slide to increase in weight, thereby causing the slide to move downward. Under the restriction of the driving rod, the housing and the slide will rotate, causing the upper surface of the slide to increase in inclination, allowing the snow on the slide to fall off the slide. After the snow on the slide falls off, the housing and the slide will quickly return to their original position under the action of the torsion spring, achieving a short-term rotation of the housing and the slide, which can easily shake off the snow on the cable, thereby preventing the cable support from collapsing and improving the safety of the cable. Two torsion springs are symmetrically arranged to increase the rotational force of the housing to reset, making it easier to reset the housing and the slide. The abutment plate and the abutment groove are provided so that when the torsion spring resets the housing and the slide plate, the slide plate will not fall out of the slide groove, thereby improving the structural strength of the anti-snow assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of this application.

[0028] Figure 2 This is a cross-sectional view of the anti-snow component and the threaded sleeve of the present application parallel to the direction of the slide groove.

[0029] Figure 3 This is a cross-sectional view of the anti-snow component and the threaded sleeve of the present application perpendicular to the direction of the slide groove.

[0030] Explanation of the accompanying drawings: 1. Cable body; 11. Conductor; 12. Conductor shielding sleeve; 13. Insulating sleeve; 14. Flame-retardant filling tape; 15. Protective sleeve; 2. Anti-snow assembly; 21. Fixing sleeve; 211. First connecting ring; 22. Shell; 221. Slide groove; 222. Abutment groove; 223. Drainage hole; 23. Torsion spring; 24. Slide plate; 241. Abutment plate; 25. Drive rod; 3. Threaded sleeve; 31. First limiting shaft; 32. Second limiting shaft. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-3 This application is described in further detail.

[0032] The embodiment of the present application discloses a snow-proof flame-retardant cable. Figure 1 A snow-proof flame-retardant cable includes a cable body 1, a snow-proof assembly 2, and a threaded sleeve 3. The snow-proof assembly 2 is provided in multiple groups, and the multiple groups of snow-proof assemblies 2 are evenly distributed along the axial direction outside the cable body 1. The multiple groups of snow-proof assemblies 2 are connected by the threaded sleeve 3.

[0033] Reference Figure 1 The cable body 1 includes a conductor 11, a conductor shielding sleeve 12, an insulating sleeve 13, a flame retardant filling tape 14 and a protective sleeve 15. There are multiple conductors 11. The number of conductor shielding sleeves 12 is equal to the number of conductors 11, and the conductor shielding sleeves 12 are sleeved on the surface of the conductor 11. The conductor shielding sleeves 12 use cross-linked conductor 11 shielding material. The number of insulating sleeves 13 is equal to the number of conductor shielding sleeves 12, and the insulating sleeves 13 are sleeved on the outer circumference of the conductor shielding sleeves 12. The conductor shielding sleeves 12 can even out the electric field on the surface of the conductor 11, prevent the formation of gaps between the conductor 11 and the insulating sleeves 13 and cause local discharge, thereby improving the safety of the cable.

[0034] Reference Figure 1 The flame-retardant filling tape 14 is filled between the insulating sleeve 13 and the protective sleeve 15. The flame-retardant filling tape 14 is made of polyurethane modified foam material. In the event of a fire in the cable, the flame-retardant filling tape 14 can absorb heat, lower the temperature, and prevent oxygen from entering, thereby delaying the spread of the fire. The outer side of the protective sleeve 15 is coated with a waterproof layer. The waterproof layer can prevent rainwater from entering the interior of the cable body 1, thereby improving the safety of the cable. The waterproof layer is made of a chloroprene latex cement mortar material layer, which not only has a good waterproof effect, but also has a good anti-corrosion effect, which can increase the service life of the cable.

[0035] Reference Figure 1 and Figure 2The snow prevention assembly 2 includes a fixing sleeve 21, an outer shell 22, a torsion spring 23, a slide 24, and a drive rod 25. The fixing sleeve 21 is mounted on the outside of the cable body 1. Symmetrical first connecting rings 211 are fixed to both ends of the fixing sleeve 21. The cross-section of the first connecting ring 211 is L-shaped. Threads are provided on the outer circumference of the end of the first connecting ring 211 facing away from the fixing sleeve 21. The spiral directions of the threads on both sides of the threaded sleeve 3 are opposite. By rotating the threaded sleeve 3, the fixing sleeves 21 on both sides can be screwed into the threaded sleeve 3 at the same time, thus connecting adjacent threaded sleeves 3. First limiting shafts 31 are threadedly connected to opposite sides of the outer side of the threaded sleeve 3. First limiting grooves are formed on opposite sides of the outer side of the first connecting ring 211. The first limiting shaft 31 passes through the threaded sleeve 3 and is inserted into the first limiting groove on the first connecting ring 211, preventing relative rotation between the threaded sleeve 3 and the fixing sleeve 21, thereby facilitating the installation stability of the snow prevention assembly 2. A second limiting shaft 32 is threadedly connected to the bottom of the outer side of the threaded sleeve 3. A second limiting groove is formed at the bottom of the outer side of the cable body 1. The second limiting shaft 32 passes through the threaded sleeve 3 and is inserted into the second limiting groove of the cable body 1, preventing relative rotation between the threaded sleeve 3 and the cable body 1, thereby preventing relative rotation between the fixing sleeve 21 and the cable body, thereby securing the fixing sleeve 21.

[0036] Reference Figure 1 and Figure 2 The outer shell 22 includes a shell and a second connecting ring. Two second connecting rings are provided. The two second connecting rings are fixed at intervals in the middle position of the inner side surface of the shell. The inner circumference of the second connecting ring is rotatably connected to the outer circumference of the fixed sleeve 21. Thereby, the outer shell 22 and the fixed sleeve 21 are rotatably installed. There are two torsion springs 23. The two torsion springs 23 are symmetrically arranged on both sides of the fixed sleeve 21, and the torsion springs 23 are fixed between the first connecting ring 211 and the second connecting ring. A slide groove 221 is provided at the top of the outer shell 22. An abutment groove 222 is provided at the bottom of the slide groove 221 of the outer shell 22. An abutment plate 241 is fixed to the bottom of the slide plate 24. The slide plate 24 is slidably connected in the slide groove 221, and the abutment plate 241 can abut against the top wall of the abutment groove 222 of the outer shell 22.

[0037] Reference Figure 2 and Figure 3 A first mounting plate is fixed to the middle of the outer side of the fixing sleeve 21. A second mounting plate is fixed to the slide plate 24 between the two second connecting rings. One end of the driving rod 25 is rotatably connected to the side of the first mounting plate via a rotating shaft, and the other end is fixedly rotatably connected to the side of the second mounting plate via a rotating shaft.

[0038] Reference Figure 1-3During heavy snow, snowflakes cover the slide 24, increasing its weight and causing it to move downward. Under the restraint of the drive rod 25, the housing 22 and slide 24 rotate, increasing the inclination of the upper surface of the slide 24 and allowing the snow on it to fall off. After the snow on the slide 24 falls off, the torsion spring 23 quickly resets the housing 22 and slide 24, achieving a short rotation of the housing 22 and slide 24, easily shaking off the snow on the cable and preventing the cable support from collapsing, thereby improving the safety of the cable. At the same time, the provision of the abutment plate 241 and the abutment groove 222 ensures that when the torsion spring 23 resets the housing 22 and slide 24, the slide 24 will not fall out of the groove 221, thereby improving the structural strength of the snow prevention assembly 2.

[0039] Reference Figure 1-3 The bottom of the housing 22 is provided with a plurality of axially spaced drainage holes 223. After rainwater enters the housing 22 through the gap between the slide plate 24 and the chute 221, it can be drained out of the housing 22 through the drainage holes 223. This prevents rainwater from soaking the torsion spring 23 for a long time, thereby minimizing rust on the torsion spring 23 and extending its service life. The outer diameters of the first connecting ring 211, the housing 22, and the threaded sleeve 3 are equal. This makes the outer surface of the cable smoother, allowing impurities to slide off more easily.

[0040] The implementation principle of the snow-proof flame-retardant cable of the embodiment of the present application is as follows: in heavy snowy weather, snowflakes cover the slide plate 24, causing the weight of the slide plate 24 to continuously increase, thereby causing the slide plate 24 to move downward. Under the restriction of the driving rod 25, the housing 22 and the slide plate 24 will rotate, causing the inclination of the upper surface of the slide plate 24 to continuously increase, allowing the snow on the slide plate 24 to fall off the slide plate 24. After the snow on the slide plate 24 falls off, the housing 22 and the slide plate 24 will quickly reset under the action of the torsion spring 23, realizing a short-term rotation of the housing 22 and the slide plate 24, which easily shakes off the snow on the cable, thereby preventing the bracket on which the cable is installed from collapsing and improving the safety of the cable.

[0041] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A snow-proof flame-retardant cable, characterized by: The invention comprises a cable body (1) and a cable body (2), wherein the anti-snow accumulation component (2) is provided with multiple groups, and the multiple groups of the anti-snow accumulation components (2) are evenly distributed on the outside of the cable body (1) along the axial direction. The anti-snow accumulation component (2) comprises a fixing sleeve (21), an outer shell (22), a torsion spring (23), a slide plate (24) and a driving rod (25), wherein the fixing sleeve (21) is fixed on the outside of the cable body (1), the outer shell (22) is rotatably connected to the outside of the fixing sleeve (21), the torsion spring (23) is fixed between the fixing sleeve (21) and the outer shell (22), a sliding groove (221) is provided on the top of the outer shell (22), the slide plate (24) is slidably connected in the sliding groove (221), one end of the driving rod (25) is rotatably connected to the outside of the fixing sleeve (21), and the other end of the driving rod (25) is rotatably connected to the bottom of the slide plate (24).

2. The snow-proof flame-retardant cable according to claim 1, characterized in that: Two torsion springs (23) are provided, and the two torsion springs (23) are symmetrically arranged on both sides of the fixing sleeve (21), and the driving rod (25) is located between the two torsion springs (23).

3. The snow-proof flame-retardant cable according to claim 1, characterized in that: The housing (22) is provided with an abutment groove (222) at the bottom of the slide groove (221), and an abutment plate (241) is fixed to the bottom of the slide plate (24). When there is no snow outside the slide plate (24), the abutment plate (241) abuts against the top wall of the abutment groove (222) of the housing (22).

4. The snow-proof flame-retardant cable according to claim 1, characterized in that: It also includes a threaded sleeve (3), wherein the spiral directions of the threads on both sides of the threaded sleeve (3) are opposite, and first connecting rings (211) are symmetrically fixed at both ends of the fixed sleeve (21), and the outer side surface of the first connecting ring (211) is provided with threads that match the threaded sleeve (3).

5. The snow-proof flame-retardant cable according to claim 4, characterized in that: The outer side surface of the threaded sleeve (3) is threadedly connected to a first limiting shaft (31), the outer side surface of the first connecting ring (211) is provided with a first limiting groove, and the first limiting shaft (31) passes through the threaded sleeve and is inserted into the first limiting groove on the first connecting ring (211).

6. The snow-proof flame-retardant cable according to claim 5, characterized in that: The outer side of the threaded sleeve (3) is also threadedly connected to a second limiting shaft (32), and the outer side of the cable body (1) is provided with a second limiting groove, and the second limiting shaft (32) passes through the threaded sleeve (3) and is inserted into the second limiting groove on the cable body (1).

7. The snow-proof flame-retardant cable according to claim 1, characterized in that: A drainage hole (223) is provided at the bottom of the housing (22).

8. The snow-proof flame-retardant cable according to claim 4, characterized in that: The outer diameters of the first connecting ring (211), the outer shell (22), and the threaded sleeve (33) are equal.

9. The snow-proof flame-retardant cable according to claim 1, characterized in that: The cable body (1) comprises a conductor (11), an insulating sleeve (13), a flame retardant filling tape (14) and a protective sleeve (15); the insulating sleeve (13) is arranged outside the conductor (11); and the flame retardant filling tape (14) is arranged between the insulating sleeve (13) and the protective sleeve (15).

10. The snow-proof flame-retardant cable according to claim 9, characterized in that: A waterproof layer is provided on the outside of the protective sleeve (15).

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