CN109767864B - Length self-adjusting cable - Google Patents
Length self-adjusting cable Download PDFInfo
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- CN109767864B CN109767864B CN201811575862.1A CN201811575862A CN109767864B CN 109767864 B CN109767864 B CN 109767864B CN 201811575862 A CN201811575862 A CN 201811575862A CN 109767864 B CN109767864 B CN 109767864B
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Abstract
The invention discloses a length self-adjusting cable, which relates to the technical field of cables and comprises a cable main body and a plurality of cable intermediates; the cable main body comprises a main conductor, and an inner liner, an armor layer and an outer sheath are sequentially wrapped outside the main conductor; the cable intermediate comprises two connecting rings, a rubber corrugated pipe is fixed between the connecting rings, a bent conductor is arranged in the rubber corrugated pipe, a plurality of armor rings are arranged between the rubber corrugated pipe and the bent conductor, and an elastic belt is arranged between the armor rings and the bent conductor. When the cable is used, the length of the cable main body is unchanged, the cable intermediate body is stretched, the rubber corrugated pipe can be stretched, the bent conductor is straightened, and the elastic band is favorable for restoring the cable intermediate body. According to the invention, the automatic adjustment of the length of the cable is realized through the arrangement of the cable intermediate, so that the cable is suitable for different working environments, the cable is prevented from being broken, the cable intermediate is telescopic and can be bent greatly, the surface is not easy to break, the cable is more stable as a whole, and the safety is high.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a length self-adjusting cable.
Background
With the continuous development of times, the national economy is continuously improved, the power construction becomes one of the basic constructions of China, the cable is not separated in the society at present, and the cable also develops in multiple directions and multiple functions from a transmission cable which ensures the power utilization of daily life, and has different characteristics according to different requirements.
The patent publication number is CN 204966074U's chinese patent, a safe and environment-friendly low pressure power control composite cable is proposed, including power core conductor, power core insulation cover, control core conductor, control core insulation cover, the control unit metallic shield, the control unit does not have steamed low cigarette fire-retardant polyolefin sheath, there is not steamed low cigarette fire-retardant area, there is not steamed low cigarette fire-retardant oxygen layer that separates, concentric conductor and steamed low cigarette fire-retardant polyolefin oversheath, the control unit metallic shield is woven the shielding by the copper wire and the overlapping of one deck copper plastic tape is around the outside of package at the control unit stranding core polyester band, place at the cable center behind the crowded package steamed low cigarette fire-retardant polyolefin sheath of outside.
The above prior art solutions have the following drawbacks: in the cable in-service use process, because construction environment's is abominable, the cable often can be dragged and buckle by the utensil, and excessive stretching and buckling all can lead to the fracture of cable, greatly increased the security of cable use, finally influence the use of cable.
Disclosure of Invention
The invention aims to provide a length self-adjusting cable which can be automatically stretched and bent and has high use safety.
The invention is realized by the following technical scheme:
a length self-adjusting cable comprises a cable main body and a plurality of cable intermediates which are clamped on the cable main body at intervals;
the cable main body comprises a main conductor, and an inner lining layer, an armor layer and an outer sheath are sequentially wrapped on the outer side of the main conductor from inside to outside;
the cable intermediate comprises two connecting rings fixed with the outer sheath, a rubber corrugated pipe is fixed between the two connecting rings, a bent conductor connected with the main conductor is arranged in the rubber corrugated pipe, the rubber corrugated pipe and armor rings connected end to end are arranged between the bent conductors, elastic belts are arranged between the armor rings and the bent conductors, and the end parts of the elastic cloth are fixedly connected with the outer walls of the connecting rings.
By adopting the technical scheme, when the cable is pulled in the using process, the length of the cable main body is unchanged, the cable intermediate body is extended, at the moment, the rubber corrugated pipe between the two connecting rings is extended, the bent conductor is straightened, the length of the cable is extended, and after no external force is applied, the elastic band is favorable for restoring the cable intermediate body. According to the invention, the automatic adjustment of the length of the cable is realized through the arrangement of the cable intermediate, so that the cable is suitable for different working environments, the cable is prevented from being broken, on the other hand, the cable intermediate is telescopic and can be bent at the same time, the bending amplitude is far larger than that of the cable main body, the bending degree is high, the surface is not easy to break, the cable is more stable as a whole, and the safety is high.
Further setting the following steps: the outer wall of the armor ring close to one end of the connecting ring is fixedly provided with an outer ring, and the inner wall of the other end of the armor ring is fixedly provided with an inner ring matched with the outer ring in a clamping mode.
Through adopting above-mentioned technical scheme, end to end connection around the armor ring, through the cooperation of outer loop and inner ring, realize the continuity of armor ring, realize the protection to bent conductor.
Further setting the following steps: the diameter of the armouring ring becomes larger as the distance between the connecting rings becomes larger.
Through adopting above-mentioned technical scheme, a plurality of armor rings all can be pegged graft each other and accomodate, and zonulae occludens is incessant between the adjacent armor ring.
Further setting the following steps: and a fixing ring is coaxially fixed on one side of the connecting ring, which faces the bent conductor, is positioned between the armor ring and the bent conductor, and the end part of the elastic belt is fixedly connected with the fixing ring.
Through adopting above-mentioned technical scheme, solid fixed ring can play the guard action to the tip of curved conductor, prevents that cable bending process in-process armor ring from causing the damage to curved conductor outer wall, improves the intensity of structure.
Further setting the following steps: a plurality of metal wires penetrate through the outer sheath along the length direction of the outer sheath, and the end portions of the metal wires are fixedly connected with the end portions of the connecting rings.
Through adopting above-mentioned technical scheme, the structural strength of cable main part can be strengthened to the wire, reduces its degree of buckling, and the bending part of cable leans on the cable midbody to accomplish.
Further setting the following steps: and inert gas is filled between the rubber corrugated pipe and the bent conductor.
Through adopting above-mentioned technical scheme, when cable midbody department pressurized deformation, make rubber bellows can resume fast through inside atmospheric pressure, and inert gas is safer simultaneously.
Further setting the following steps: the inert gas is nitrogen.
By adopting the technical scheme, the nitrogen is easy to obtain, and the cost performance is high.
Further setting the following steps: an air valve is fixed on the outer wall of the connecting ring of the air transmission channel, and one end of the air transmission channel, which is far away from the air valve, points to the inside of the rubber corrugated pipe.
Through adopting above-mentioned technical scheme, inert gas sends into in the rubber bellows from the gas transmission passageway of a go-between, discharges from the gas transmission passageway of another go-between, seals through the pneumatic valve, ventilates simply convenient.
In conclusion, the beneficial technical effects of the invention are as follows:
(1) the arrangement of the cable intermediate can realize the automatic adjustment of the length of the cable, thereby being suitable for different working environments, improving the applicability, avoiding the fracture of the cable and having higher use safety;
(2) the cable intermediate is arranged to realize free bending of the cable, the surface of the bent part is not easy to break, and the cable is more stable to use.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
fig. 3 is a partially enlarged view of a portion a in fig. 2.
Reference numerals: 1. a cable body; 2. a cable intermediate; 11. a primary conductor; 12. an inner liner layer; 13. an armor layer; 14. an outer sheath; 15. a metal wire; 21. a connecting ring; 22. a rubber bellows; 23. bending the conductor; 24. an armor ring; 25. an outer ring; 26. an inner ring; 27. an elastic band; 28. a fixing ring; 29. a gas transmission channel; 30. and (4) an air valve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the length self-adjusting cable disclosed by the invention comprises a cable main body 1 and a cable intermediate body 2 which are integrally arranged, wherein a plurality of cable intermediate bodies 2 are clamped on the cable main body 1 at equal intervals.
Referring to fig. 2, the cable main body 1 includes a main conductor 11, the main conductor 11 is a copper conductor wrapped with an insulating layer, and an inner liner 12, an armor layer 13 and an outer sheath 14 are sequentially wrapped on the outer side of the main conductor 11 from inside to outside. The cable body 1 protects the main conductor 11 by multilayer protection. A plurality of wires 15 are inserted into the outer sheath 14 along the longitudinal direction thereof, and the wires 15 are preferably arranged at four equal angles. The structural strength of the cable body 1 can be reinforced by the wires 15, and the degree of bending thereof can be reduced.
Referring to fig. 2, the cable intermediate 2 includes two connection rings 21, the two connection rings 21 are coaxially and fixedly connected with the outer sheath 14, a rubber corrugated tube 22 is fixed between the two connection rings 21, a bent conductor 23 electrically connected with the main conductor 11 is arranged in the rubber corrugated tube 22, the bent conductor 23 is arranged in a W shape, and the bent conductor 23 is a copper conductor wrapped with an insulating layer. The rubber bellows 22 protects the bent conductor 23. The ends of the wires 15 are each fixedly connected with the connection ring 21 remote from the rubber bellows 22. The bent portion of the cable is completed against the cable intermediate body 2.
Referring to fig. 3, a plurality of armor rings 24 connected end to end are arranged between the rubber corrugated pipe 22 and the bent conductor 23, an outer ring 25 is fixed on the outer wall of one end of the armor ring 24 close to the connecting ring 21, and an inner ring 26 in clamping fit with the outer ring 25 is fixed on the inner wall of the other end. A plurality of armor rings 24 are connected end to end from front to back, and the continuity of the armor rings 24 is realized through the matching of the outer ring 25 and the inner ring 26, so that the bent conductor 23 is further protected. The diameter of the armor ring 24 becomes larger as the distance between the connecting rings 21 becomes longer, and the diameter of the armor ring 24 in the middle of the two connecting rings 21 is the largest. Adjacent armor rings 24 can all be inserted into each other and accomodate to closely connected and incessant.
Referring to fig. 2, a fixing ring 28 is coaxially fixed on one side of the connecting ring 21 facing the bent conductor 23, the fixing ring 28 is located between the armor ring 24 and the bent conductor 23, the outer diameter of the fixing ring 28 is smaller than the minimum inner diameter of the armor ring 24, an elastic band 27 is arranged between the two connecting rings 21, the elastic band 27 is cylindrical, and the end of the elastic band 27 is fixedly connected with one end of the fixing ring 28 far away from the connecting ring 21. The end part of the bent conductor 23 can be protected by the fixing ring 28, the outer wall of the bent conductor 23 is prevented from being damaged by the armor ring 24 in the cable bending process, and the structural strength of the cable is improved. The elastic band 27 contributes to restoration of the cable intermediate body 2 after no external force is applied.
Referring to fig. 3, an inert gas, which is nitrogen, is filled between the rubber bellows 22 and the bent conductor 23. When the cable intermediate body 2 is bent or pressed, the cable intermediate body 2 enables the rubber corrugated pipe 22 to be quickly recovered through internal air pressure, meanwhile, the inert gas is safer, the nitrogen is easy to obtain, and the cost performance is high. The connecting ring 21 is internally provided with an air transmission channel 29, the air transmission channel 29 is L-shaped, one end of the air transmission channel 29 is arranged on the peripheral wall of the connecting ring 21, and the other end of the air transmission channel 29 is arranged on the peripheral wall of the connecting ring 21. An air valve 30 is fixed on the outer wall of the connecting ring 21 of the air transmission channel 29, and one end of the air transmission channel 29 far away from the air valve 30 points to the inside of the rubber corrugated pipe 22. Inert gas is sent into the rubber corrugated pipe 22 from the gas transmission channel 29 of one connecting ring 21 and is discharged from the gas transmission channel 29 of the other connecting ring 21, and the gas valve 30 is used for sealing, so that the ventilation is simple, and the operation is more convenient.
The implementation principle and the beneficial effects of the embodiment are as follows:
when the cable is pulled in the using process, the length of the cable body 1 is unchanged, the cable intermediate body 2 is extended, at this time, the rubber corrugated pipe 22 between the two connecting rings 21 is extended, the bent conductor 23 is straightened, the overall length of the cable is increased, and the elastic belt 27 is helpful for the restoration of the cable intermediate body 2 after no external force is applied. When the cable is bent in the use process, the bending degree of the cable intermediate body 2 is higher than that of the cable main body 1, and the cable intermediate body 2 is used for realizing quick bending.
The cable comprises cable midbody 2 and cable main part 1, and the automatically regulated of cable length has been realized on the one hand in setting up of cable midbody 2 to adaptable different operational environment improves the suitability, has avoided the fracture of cable, and on the other hand, cable midbody 2 can freely buckle, and the range of buckling is far greater than cable main part 1, and the surface is difficult for breaking. The invention is more stable when in use and has high safety when in use.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (6)
1. A length self-adjusting cable, characterized in that: the cable comprises a cable main body (1) and a plurality of cable intermediates (2) which are clamped on the cable main body (1) at intervals;
the cable main body (1) comprises a main conductor (11), and an inner liner (12), an armor layer (13) and an outer sheath (14) are sequentially wrapped on the outer side of the main conductor (11) from inside to outside;
the cable intermediate body (2) comprises two connecting rings (21) fixed with the outer sheath (14), a rubber corrugated pipe (22) is fixed between the two connecting rings (21), a bent conductor (23) connected with the main conductor (11) is arranged in the rubber corrugated pipe (22), a plurality of armor rings (24) connected end to end are arranged between the rubber corrugated pipe (22) and the bent conductor (23), an elastic belt (27) is arranged between the armor rings (24) and the bent conductor (23), and the end part of the elastic belt (27) is fixedly connected with the outer wall of the connecting ring (21);
a plurality of metal wires (15) penetrate through the outer sheath (14) along the length direction of the outer sheath, the end parts of the metal wires (15) are fixedly connected with the end part of the connecting ring (21), and inert gas is filled between the rubber corrugated pipe (22) and the bent conductor (23).
2. A length self-adjusting cable according to claim 1, wherein: an outer ring (25) is fixed on the outer wall of one end, close to the connecting ring (21), of the armor ring (24), and an inner ring (26) matched with the outer ring (25) in a clamping mode is fixed on the inner wall of the other end of the armor ring.
3. A length self-adjusting cable according to claim 2, wherein: the diameter of the armouring ring (24) becomes larger as the distance between the connecting rings (21) becomes larger.
4. A length self-adjusting cable according to claim 3, wherein: a fixing ring (28) is coaxially fixed on one side, facing the bent conductor (23), of the connecting ring (21), the fixing ring (28) is located between the armor ring (24) and the bent conductor (23), and the end portion of the elastic band (27) is fixedly connected with the fixing ring (28).
5. A length self-adjusting cable according to claim 1, wherein: the inert gas is nitrogen.
6. A length self-adjusting cable according to claim 5, wherein: an air transmission channel (29) is formed in the connecting ring (21), an air valve (30) is fixed on the outer wall of the connecting ring (21) of the air transmission channel (29), and one end, far away from the air valve (30), of the air transmission channel (29) points to the inside of the rubber corrugated pipe (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811575862.1A CN109767864B (en) | 2018-12-22 | 2018-12-22 | Length self-adjusting cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811575862.1A CN109767864B (en) | 2018-12-22 | 2018-12-22 | Length self-adjusting cable |
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| Publication Number | Publication Date |
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| CN109767864A CN109767864A (en) | 2019-05-17 |
| CN109767864B true CN109767864B (en) | 2020-07-07 |
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| CN201811575862.1A Active CN109767864B (en) | 2018-12-22 | 2018-12-22 | Length self-adjusting cable |
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| CN111508656B (en) * | 2020-04-28 | 2021-12-03 | 安徽省康利亚股份有限公司 | Super-soft cold-resistant special cable for military equipment |
| CN112109569B (en) * | 2020-08-28 | 2022-01-25 | 武昌理工学院 | Length-adjustable charging wire structure of new energy automobile |
| CN112117037B (en) * | 2020-09-07 | 2021-11-02 | 承德可得电子有限责任公司 | Inner-waveform tensile anti-bending cable based on reserved length |
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| CN113572118B (en) * | 2021-09-26 | 2021-11-30 | 南通长风新能源装备科技有限公司 | Submarine cable protective pipe assembly for offshore wind power generation |
| CN114215981A (en) * | 2021-12-27 | 2022-03-22 | 山东宏丰智能装备有限公司 | High-pressure movable elbow connecting structure |
| CN114215980A (en) * | 2021-12-27 | 2022-03-22 | 山东宏丰智能装备有限公司 | High-pressure movable elbow |
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