Low-temperature-resistant medium-low voltage power cable

Abstract

The application relates to the technical field of power cables, and discloses a low-temperature-resistant medium-low-voltage power cable, which comprises a cable body and further comprises a fixed ring and a movable ring, the fixed ring and the movable ring are sleeved outside the cable body, a supporting mechanism, the supporting mechanism comprises a plurality of elastic supporting plates, the plurality of elastic supporting plates are uniformly fixed and installed at one end of the fixed ring and the movable ring in the circumferential direction, the middle positions of the plurality of elastic supporting plates are outward convex structures, the plurality of elastic supporting plates can be arched outward to support the cable body, and a locking mechanism is used for locking the position of the movable ring. The movable ring is moved to the direction of the fixed ring at the other end through a rotating ring, the plurality of elastic supporting plates can be arched outward to form support for the cable body, the outside of the cable body is prevented from directly contacting the ground, the surface of the cable body is prevented from being scratched and abraded, and the service life of the cable body is affected.

Description

Technical Field

[0001] This invention relates to the field of power cable technology, and in particular to a low-temperature resistant medium- and low-voltage power cable. Background Technology

[0002] Low-temperature resistant medium- and low-voltage power cables are power transmission cables specifically designed for operation in low-temperature environments and are suitable for medium- and low-voltage power systems. These cables typically possess excellent insulation and cold-resistance properties to ensure safe and stable operation under low-temperature conditions. Some existing power cables have poor inherent protective performance. With continuous pulling and movement by users, frequent friction between the cable and the ground can easily cause damage to the cable sheath, exposing the conductors and reducing the cable's lifespan and safety factor.

[0003] An existing medium- and low-voltage power cable (publication number: CN116453740A) has at least the following drawbacks: The above patent provides double protection for the conductor through the outer shell and the inner shell, which improves the protection effect of the conductor; since the above patent still relies on the outer shell and the inner shell to protect the cable, it cannot avoid the cable contacting the ground, which is still easy to cause wear and tear between the cable and the ground, affecting the service life of the cable. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a low-temperature resistant medium- and low-voltage power cable.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A low-temperature resistant medium- and low-voltage power cable includes a cable body and further includes:

[0007] A fixed ring and a movable ring, both of which are sleeved on the outside of the cable body;

[0008] The support mechanism includes multiple elastic support plates, which are uniformly fixedly installed in the circumferential direction at one end adjacent to the fixed ring and the movable ring. The middle position of the multiple elastic support plates is an outward protruding structure, and the multiple elastic support plates can arch outward to support the cable body.

[0009] A locking mechanism is used to lock the position of the moving ring.

[0010] As a further embodiment of the present invention, the locking mechanism includes a locking ring, which is sleeved on the outside of the cable body and is disposed between the fixed ring and the movable ring. A rotating ring is rotatably mounted on the periphery of the movable ring, and a connecting component is installed between the rotating ring and the movable ring.

[0011] As a further embodiment of the present invention, the connecting component includes a limiting ring fixedly installed on the outer periphery of the movable ring, and the inner wall of the rotating ring is provided with a movable groove, the limiting ring being disposed inside the movable groove.

[0012] As a further embodiment of the present invention, a fixing component is installed between the locking ring and the fixing ring, the fixing component comprising multiple connecting rods uniformly fixed in the circumferential direction between the ends of the locking ring and the fixing ring.

[0013] As a further embodiment of the present invention, the inner wall of the rotating ring is provided with an internal thread, and the outer periphery of both the fixed ring and the locking ring is provided with an external thread that matches the internal thread.

[0014] As a further embodiment of the present invention, the rotating ring is provided with a plurality of clearance openings that match the elastic support plate at one end of the circumference near the fixed ring, and the outer circumference of the rotating ring is provided with anti-slip grooves.

[0015] As a further embodiment of the present invention, the width of the movable groove is greater than the width of the limiting ring.

[0016] As a further embodiment of the present invention, the outer circumference of the fixing ring is uniformly provided with multiple threaded countersunk holes.

[0017] As a further embodiment of the present invention, the outer periphery of the locking ring is provided with a plurality of receiving grooves corresponding to the elastic support plate.

[0018] A method for using a low-temperature resistant medium- and low-voltage power cable includes the following steps:

[0019] S1: Connect multiple fixed rings and swivel rings one end to the other and fit them onto the cable body. Then fix the fixed rings onto the cable body. Move the swivel ring to the adjacent fixed ring so that the swivel ring is threadedly connected to the corresponding fixed ring. This achieves longitudinal connection of multiple elastic support plates, thereby protecting the outside of the cable body through the elastic support plates connected end to end.

[0020] S2: When it is necessary to drag the cable body, loosen the connection between the swivel and the fixed ring, and use the swivel to push the movable ring towards the fixed ring at the other end, so that the multiple elastic support plates can arch outward to support the cable body.

[0021] S3: When the movable ring is pushed to the locking ring, the ends of multiple elastic support plates near the rotating ring are pressed into the corresponding receiving grooves, causing the rotating ring to rotate and connect with the locking ring by threads, thereby limiting the position of the rotating ring and the movable ring, so that the elastic support plates can remain in an arched state.

[0022] The beneficial effects of this invention are as follows:

[0023] 1. During normal use, multiple fixed rings and swivel rings are sequentially connected end to end and fitted onto the cable body. The fixed rings are then fixed onto the cable body. At this time, the swivel ring is moved to the adjacent fixed ring so that the swivel ring is threadedly connected to the corresponding fixed ring. This achieves the longitudinal connection of multiple elastic support plates. In this way, the elastic support plates connected end to end provide protection for the outside of the cable body, preventing the cable body from being damaged by impact.

[0024] 2. When it is necessary to drag the cable body, loosen the connection between the swivel and the fixed ring, and use the swivel to push the movable ring towards the fixed ring at the other end, so that the multiple elastic support plates can arch outward to support the cable body, thus preventing the outside of the cable body from directly contacting the ground, causing the surface of the cable body to be bumped and worn, which would affect the service life of the cable body.

[0025] 3. When the movable ring is pushed to the locking ring, the ends of the multiple elastic support plates near the rotating ring are pressed into the corresponding receiving grooves, allowing the rotating ring to rotate and connect with the locking ring by threads. This limits the position of the rotating ring and the movable ring, allowing the elastic support plates to remain in an arched state. After connecting the rotating ring and the locking ring, align the clearance opening with the corresponding elastic support plate, release the elastic support plate, and allow the elastic support plate to snap into the clearance opening. This locks the rotating ring, preventing it from rotating on its own and causing the connection between it and the locking ring to loosen. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a low-temperature resistant medium- and low-voltage power cable proposed in this invention;

[0027] Figure 2 This is a schematic diagram of the dragging state structure of a low-temperature resistant medium-low voltage power cable proposed in this invention;

[0028] Figure 3 This is a partial structural diagram of a low-temperature resistant medium- and low-voltage power cable proposed in this invention;

[0029] Figure 4 This is a schematic diagram of the fixing ring and locking ring structure of a low-temperature resistant medium-low voltage power cable proposed in this invention;

[0030] Figure 5 This is a schematic diagram of an elastic support plate structure for a low-temperature resistant medium- and low-voltage power cable proposed in this invention.

[0031] Figure 6 This is a schematic diagram of the movable ring and rotating ring structure of a low-temperature resistant medium-low voltage power cable proposed in this invention.

[0032] In the diagram: 1. Cable body; 2. Fixed ring; 3. Movable ring; 4. Elastic support plate; 5. Rotary ring; 6. Movable groove; 7. Limiting ring; 8. Clearance opening; 9. Connecting rod; 10. Locking ring; 11. Threaded countersunk hole; 12. Anti-slip groove; 13. Internal thread; 14. External thread; 15. Receiving groove. Detailed Implementation

[0033] 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. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] See attached document Figure 1 - Appendix Figure 6 A low-temperature resistant medium-low voltage power cable, comprising a cable body 1, and further comprising:

[0036] Fixed ring 2 and movable ring 3 are both sleeved on the outside of cable body 1;

[0037] The support mechanism includes multiple elastic support plates 4, which are uniformly fixed in the circumferential direction at one end adjacent to the fixed ring 2 and the movable ring 3. The middle position of the multiple elastic support plates 4 is an outward protruding structure, and the multiple elastic support plates 4 can arch outward to support the cable body 1.

[0038] A locking mechanism is used to lock the position of the movable ring 3.

[0039] During normal use, the elastic support plate 4 is in a flat state. At this time, multiple fixing rings 2 and rotating rings 5 ​​are sequentially connected end to end and sleeved on the cable body 1. The fixing rings 2 are then fixed on the cable body 1. Then, the rotating ring 5 is moved to the adjacent fixing ring 2 so that the rotating ring 5 is threadedly connected to the corresponding fixing ring 2. This achieves the longitudinal connection of multiple elastic support plates 4, thereby protecting the outside of the cable body 1 through the end-to-end connected elastic support plates 4, and preventing the outside of the cable body 1 from being hit and damaged.

[0040] When it is necessary to drag the cable body 1, loosen the connection between the swivel ring 5 and the fixed ring 2, and use the swivel ring 5 to push the movable ring 3 towards the fixed ring 2 at the other end, so that the multiple elastic support plates 4 can arch outward to support the cable body 1, thereby preventing the outside of the cable body 1 from directly contacting the ground, causing the surface of the cable body 1 to be bumped and worn, which would affect the service life of the cable body 1.

[0041] In this embodiment, the locking mechanism includes a locking ring 10, which is sleeved on the outside of the cable body 1 and positioned between the fixed ring 2 and the movable ring 3. A rotating ring 5 is rotatably mounted on the periphery of the movable ring 3. A connecting assembly is installed between the rotating ring 5 and the movable ring 3. The connecting assembly includes a limiting ring 7 fixedly mounted on the outer periphery of the movable ring 3. A movable groove 6 is formed on the inner wall of the rotating ring 5, and the limiting ring 7 is located inside the movable groove 6. A fixing assembly is installed between the locking ring 10 and the fixed ring 2. The fixing assembly includes multiple connecting rods 9 evenly fixedly mounted circumferentially between the ends of the locking ring 10 and the fixed ring 2. An internal thread 13 is formed on the inner wall of the rotating ring 5. An external thread 14 matching the internal thread 13 is formed on the outer periphery of both the fixed ring 2 and the locking ring 10. Multiple clearance openings 8 matching the elastic support plate 4 are evenly formed circumferentially on the end of the rotating ring 5 near the fixed ring 2. An anti-slip groove 12 is formed on the outer periphery of the rotating ring 5. Multiple receiving grooves 15 corresponding to the elastic support plate 4 are formed on the outer periphery of the locking ring 10.

[0042] When the movable ring 3 is pushed to the locking ring 10, the ends of multiple elastic support plates 4 near the rotating ring 5 are pressed into the corresponding receiving grooves 15, so that the rotating ring 5 can rotate and be threadedly connected to the locking ring 10, thereby limiting the position of the rotating ring 5 and the movable ring 3, and keeping the elastic support plates 4 in an arched state.

[0043] After connecting the rotating ring 5 and the locking ring 10, align the clearance opening 8 with the corresponding elastic support plate 4, release the elastic support plate 4 so that the elastic support plate 4 can be inserted into the clearance opening 8, thereby locking the rotating ring 5 and preventing the rotating ring 5 from rotating on its own, which would cause it to become loose from the locking ring 10.

[0044] In this embodiment, the width of the movable groove 6 is greater than the width of the limiting ring 7, so that the rotating ring 5 can have a certain amount of movement space on the movable ring 3, so that the rotating ring 5 can be threadedly connected to the fixed ring 2 and the locking ring 10.

[0045] In this embodiment, multiple threaded countersunk holes 11 are uniformly opened in the outer circumferential direction of the fixing ring 2. When in use, the screw is screwed into the threaded countersunk hole 11 so that the screw abuts against the surface of the cable body 1, thereby achieving the limiting effect of fixing ring 2.

[0046] In this embodiment.

[0047] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects: In normal use, the elastic support plate 4 is in a flat state. At this time, multiple fixing rings 2 and rotating rings 5 ​​are sequentially connected end to end and sleeved on the cable body 1, and the fixing rings 2 are fixed on the cable body 1. Then, the rotating ring 5 is moved to the adjacent fixing ring 2 so that the rotating ring 5 is threadedly connected to the corresponding fixing ring 2, thereby realizing the longitudinal connection of multiple elastic support plates 4. In this way, the elastic support plates 4 connected end to end can protect the outside of the cable body 1 and prevent the outside of the cable body 1 from being hit and damaged.

[0048] When it is necessary to drag the cable body 1, loosen the connection between the rotating ring 5 and the fixed ring 2, and use the rotating ring 5 to push the movable ring 3 towards the fixed ring 2 at the other end, so that the multiple elastic support plates 4 can arch outward to support the cable body 1, avoid the outside of the cable body 1 from directly contacting the ground, and prevent the surface of the cable body 1 from being bumped and worn, which would affect the service life of the cable body 1.

[0049] When the movable ring 3 is pushed to the locking ring 10, the ends of multiple elastic support plates 4 near the rotating ring 5 are pressed into the corresponding receiving grooves 15, so that the rotating ring 5 can rotate and be threadedly connected to the locking ring 10, thereby limiting the position of the rotating ring 5 and the movable ring 3, and keeping the elastic support plates 4 in an arched state.

[0050] After connecting the rotating ring 5 and the locking ring 10, align the clearance opening 8 with the corresponding elastic support plate 4, release the elastic support plate 4 so that the elastic support plate 4 can be inserted into the clearance opening 8, thereby locking the rotating ring 5 and preventing the rotating ring 5 from rotating on its own, which would cause it to become loose from the locking ring 10.

[0051] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A low-temperature resistant medium-low voltage power cable, comprising a cable body (1), characterized in that, Also includes: Fixed ring (2) and movable ring (3), both of which are sleeved on the outside of the cable body (1); The support mechanism includes multiple elastic support plates (4), which are uniformly fixed in the circumferential direction at one end of the fixed ring (2) and the movable ring (3). The middle position of the multiple elastic support plates (4) is an outward protruding structure, and the multiple elastic support plates (4) can arch outward to support the cable body (1). A locking mechanism is used to lock the position of the active ring (3).

2. The low-temperature resistant medium- and low-voltage power cable according to claim 1, characterized in that, The locking mechanism includes a locking ring (10), which is sleeved on the outside of the cable body (1) and is located between the fixed ring (2) and the movable ring (3). A rotating ring (5) is rotatably installed on the periphery of the movable ring (3), and a connecting component is installed between the rotating ring (5) and the movable ring (3).

3. The low-temperature resistant medium- and low-voltage power cable according to claim 2, characterized in that, The connecting component includes a limiting ring (7) fixedly installed on the outer periphery of the movable ring (3), and the inner wall of the rotating ring (5) is provided with a movable groove (6), and the limiting ring (7) is disposed inside the movable groove (6).

4. A low-temperature resistant medium- and low-voltage power cable according to claim 3, characterized in that, A fixing component is installed between the locking ring (10) and the fixing ring (2). The fixing component includes multiple connecting rods (9) that are uniformly fixed in the circumferential direction between the ends of the locking ring (10) and the fixing ring (2).

5. A low-temperature resistant medium- and low-voltage power cable according to claim 4, characterized in that, The inner wall of the rotating ring (5) is provided with an internal thread (13), and the outer periphery of the fixed ring (2) and the locking ring (10) are provided with an external thread (14) that matches the internal thread (13).

6. A low-temperature resistant medium- and low-voltage power cable according to claim 5, characterized in that, The rotating ring (5) has multiple clearance openings (8) that match the elastic support plate (4) evenly opened in the circumferential direction at one end near the fixed ring (2), and the outer circumference of the rotating ring (5) has anti-slip grooves (12).

7. A low-temperature resistant medium- and low-voltage power cable according to claim 3, characterized in that, The width of the movable groove (6) is greater than the width of the limiting ring (7).

8. A low-temperature resistant medium- and low-voltage power cable according to claim 1, characterized in that, The fixed ring (2) has multiple threaded countersunk holes (11) evenly distributed around its outer circumference.

9. A low-temperature resistant medium- and low-voltage power cable according to claim 2, characterized in that, The outer periphery of the locking ring (10) is provided with multiple receiving slots (15) corresponding to the elastic support plate (4).

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