CN118008939A - Insulating sealed linkage of low pressure multicore cable tip - Google Patents
Insulating sealed linkage of low pressure multicore cable tip Download PDFInfo
- Publication number
- CN118008939A CN118008939A CN202410146916.1A CN202410146916A CN118008939A CN 118008939 A CN118008939 A CN 118008939A CN 202410146916 A CN202410146916 A CN 202410146916A CN 118008939 A CN118008939 A CN 118008939A
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- conductor
- bolt
- cable
- hanging block
- outer layer
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- 239000004020 conductor Substances 0.000 claims abstract description 84
- 238000002955 isolation Methods 0.000 claims abstract description 32
- 239000000725 suspension Substances 0.000 claims abstract description 31
- 238000009413 insulation Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 239000011248 coating agent Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims abstract description 4
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 5
- 238000001746 injection moulding Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 229920001342 Bakelite® Polymers 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000004637 bakelite Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229920005672 polyolefin resin Polymers 0.000 claims 1
- 239000010410 layer Substances 0.000 description 29
- 239000000463 material Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 7
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Cable Accessories (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The invention discloses an insulating sealing suspension device for the end part of a low-voltage multi-core cable, which comprises a bolt hook, an isolating suspension block and an insulating outer layer; the bolt hook is a bolt with a hook at one end; the center of the isolation hanging block is provided with a bolt hole for bolt fixing of the bolt hook, and the periphery of the isolation hanging block is provided with a plurality of conductor holes for each cable core conductor at the end part of the cable to pass through and fix respectively; coating an insulating outer layer outside the isolation hanging block, so that the bolts of the bolt hooks, the isolation hanging block and the cable end part are coated in the insulating outer layer, and the insulating outer layer forms an integral sealing protection; the conductor at the end of the cable is outwards turned over by the conductor locking piece and the single wire at the tail end of the conductor and is fixed by the single wire locking piece. The invention solves the problems of long length of the needed terminal cable, damage to the sheath or insulating layer or insulation sealing of the end part, narrow application range and the like of the steel wire mesh sleeve type suspension device, has reliable suspension capability and high safety coefficient, can suspend stress for a long time, and the length of the end part of the needed cable is only 0.3-0.5 m.
Description
The invention is the application date: 2018-12-28, application number: 201811617570.X, name: a divisional application of 'an insulating suspension device at the end part of a low-voltage cable'.
Technical Field
The invention relates to an insulating sealing suspension device at the end part of a low-voltage multi-core cable, in particular to a hoisting traction and suspension device for vertically installing the low-voltage multi-core cable.
Background
At present, most of the hoisting traction and suspension devices vertically installed on a low-voltage single-core or multi-core cable in the market are steel wire mesh sleeves, and the structure and the manufacturing process of the type of suspension devices are relatively simple. This type of device is currently used in many applications because of its relatively simple structure and manufacturing process, but has many problems.
1. The length of the terminal cable required by the device is longer: the length of the terminal cable required for manufacturing the device in the prefabricated branch cable engineering is required to be at least more than 0.8 meter, the multiple cores are at least more than 1.5 meters, and the cable specification is larger, so that the required length is longer, because the cable insulation and the conductor adhesion force, the insulation and the sheath friction force and the steel wire mesh sleeve and the sheath friction force are used together to achieve the traction and lifting functions, the tension almost acts on the cable outer protective layer and the insulation layer, and if the length of the terminal cable is insufficient, accidents that the cable sheath or the insulation is damaged by pulling or even the conductor is pulled out, and the cable is exposed can not be hung for a long time so as to avoid accidents.
2. Damage sheath or insulation layer: the locking degree of the open end of the steel wire mesh sleeve is not easy to control, the mesh sleeve is easy to pull out and take off when the steel wire mesh sleeve is too loose, and the sheath layer and the insulating layer can be damaged when the steel wire mesh sleeve is too tight, so that potential electrical defect is caused.
3. Insulation sealing of damaged end: the steel wire mesh sleeve can cause insulation sealing damage of the cable end head due to tension, shrinkage and friction in the traction and hoisting process, so that potential electrical defect hazards and even accidents are caused.
4. The application range is narrow: meanwhile, because the tensile force almost acts on the cable outer protective layer and the insulating layer during the working, the device is not suitable for products with unsound combination between the metal sheath layer and the cable core, such as flexible mineral insulated branch cables and the like.
In order to solve the problems, the inventor designs an insulating suspension device at the end part of a cable, which is suitable for various single-core or multi-core branch cables, flexible mineral insulating branch cables, common single-core or multi-core cables and other products.
Disclosure of Invention
The invention aims to provide an end insulating sealing suspension device for a low-voltage multi-core cable, which aims to solve the problems of long length of a required terminal cable, damage to a sheath or an insulating layer or end insulating sealing, narrow application range and the like of a steel wire mesh sleeve suspension device commonly used in the current market.
In order to achieve the above object, the solution of the present invention is:
An insulating sealing suspension device for the end part of a low-voltage multi-core cable comprises a bolt hook, an isolating suspension block and an insulating outer layer; the bolt hook is a bolt with a hook at one end; the center of the isolation hanging block is provided with a bolt hole for bolt fixing of the bolt hook, and the periphery of the isolation hanging block is provided with a plurality of conductor holes for each cable core conductor at the end part of the cable to pass through and fix respectively; coating an insulating outer layer outside the isolation hanging block, so that the bolts of the bolt hooks, the isolation hanging block and the cable end part are coated in the insulating outer layer, and the insulating outer layer forms an integral sealing protection;
The conductor fixing structure of the cable end part is as follows: the conductor locking piece is fixed (compressed and locked) on the conductor passing through the conductor hole, so that the conductor cannot exit the conductor hole, the single line at the tail end of the conductor is outwards folded and covered outside the conductor locking piece, and the single line locking piece is fixed (compressed and locked) on the periphery of the single line at the tail end of the conductor after being bent and folded, so that the conductor locking piece cannot slip when the conductor is pulled.
The bolts of the bolt hooks are fixed in the bolt holes of the isolation hanging blocks by means of the combination of fastening nuts and gaskets at two ends.
The bottom of the bolt hole of the isolation hanging block is provided with a nut sinking groove for accommodating a fastening nut and a gasket at the end part of the bolt.
The bolt hook has enough strength to ensure the reliability of hanging, the specification can be correspondingly adjusted according to the size of the cable specification, and the materials of the bolt hook comprise but are not limited to common steel, stainless steel and the like.
The insulating outer layer forms an integral sealing protection outside the suspension structure unless being destroyed and not detachable; the manufacturing method comprises the steps of injection molding, casting molding and the like, and the materials of the cable outer sheath material comprise PVC, polyolefin, epoxy resin and the like, but the compatibility of the cable outer sheath material and the cable outer sheath material is ensured, so that the sealing performance is ensured.
The isolating hanging block is thick-wall circular cylinder, the axle center is a bolt hole, the thick wall of the circular cylinder is uniformly distributed with 2-5 axial conductor holes (the number of the conductor holes corresponds to the number of cable conductor cores needed to be hung), and the isolating hanging block is made of bakelite, nylon, ceramic, epoxy resin and the like.
And chamfers are formed on the surfaces of the insulating outer layers corresponding to the bolt hooks and the cable ends.
After the scheme is adopted, the insulating hanging device is composed of the bolt hanging hooks, the insulating hanging blocks and the insulating outer layer, on the premise of ensuring the insulating performance, the bolt hanging hooks are connected with conductors at the end parts of the cables by the insulating hanging blocks, so that the pulling force applied to traction, lifting or hanging is mainly applied to the cable conductors, and the problems that the length of a required terminal cable is long, a sheath or an insulating layer or end insulating seal is damaged, the application range is narrow and the like of the steel wire mesh sleeve type hanging device are solved.
Compared with the common steel wire mesh sleeve type suspension device in the current market, the suspension capacity is reliable, the cable insulation layer and the sheath layer are hardly subjected to tension and pressure, the safety coefficient is high, the long-term suspension stress can be realized, the required cable end length is small, the multi-core cable only needs 0.3-0.5 m, and the cable is completely suitable for cable products with unsound combination between the metal sheath layer and the cable core, such as flexible mineral insulation type branch cables.
The invention will be further described with reference to the drawings and examples.
Drawings
Fig. 1 is a schematic diagram of a combined structure of the present invention (in the case of a quad cable, vertical placement) suitable for use with low voltage multi-core cable ends;
Fig. 2 is an enlarged view showing the positional relationship of the conductor lock piece, the conductor end single wire and the single wire lock piece on the conductor in fig. 1.
Description of the reference numerals
The bolt hook 1, the bolt 11, the fastening nut 12 and the gasket 13;
the isolation hanging block 2, a bolt hole 21, a conductor hole 22 and a nut sinking groove 23;
Insulating outer layer 3, chamfers 31 and 32;
Cable end 4, cable core 40, conductor 41, conductor locking tab 42, conductor end single wire 43, single wire locking tab 44.
Detailed Description
As shown in fig. 1 to 2, the invention discloses an insulating sealing suspension device for the end part of a low-voltage multi-core cable, which comprises a bolt hook 1, an isolating suspension block 2 and an insulating outer layer 3; the bolt hook 1 is a bolt 11 with a hook at one end; the center of the isolation hanging block 2 is provided with a bolt hole 21 for fixing the bolt 11 of the bolt hook 1, and the periphery of the isolation hanging block 2 is also provided with a plurality of conductor holes 22 for respectively penetrating and fixing each cable core conductor 41 of the cable end 4; the insulating outer layer 3 is coated on the outside of the isolation hanging block 2 by injection molding or casting molding, so that the bolts 11 of the bolt hooks 1, the isolation hanging block 2 and the cable end 4 are coated in the insulating outer layer 3. Therefore, on the premise of ensuring the insulation performance, the bolt hook 1 is connected with the conductor 41 at the end part 4 of the cable by the isolating hanging block 2, so that the pulling force exerted by traction, lifting or hanging mainly acts on the cable conductor, and the problems that the required terminal cable length is long, the sheath or insulating layer or end part insulating seal is damaged, the application range is narrow and the like of the steel wire mesh sleeve type hanging device are solved.
The bolt hook 1 has enough strength to ensure the reliability of hanging, and the specification can be correspondingly adjusted according to the size of the cable specification, and the materials of the bolt hook comprise but are not limited to common steel, stainless steel and the like.
The bolt 11 of the bolt hanger 1 can be fixed in the bolt hole 21 of the isolation hanging block 2 by means of the combination of the fastening nuts 12 and the gaskets 13 at the two ends. Further, the bottom of the bolt hole 21 of the isolation hanging block 2 may be provided with a nut sinking groove 23 for receiving the fastening nut 12 and the gasket 13 at the end of the bolt 11, so that the structure is more compact.
The fixing structure of the conductor 41 of the cable end 4 may specifically be: a conductor locking piece 42 is fixed on a conductor 41 passing through a conductor hole 22 in a compression locking mode, so that the conductor 41 cannot withdraw from the conductor hole 22, a conductor tail end single wire 43 is outwards folded and covered outside the conductor locking piece 42, and a single wire locking piece 44 is fixed on the periphery of the bent and folded conductor tail end single wire 43 in a compression locking mode, so that the conductor locking piece 42 cannot slip when the conductor 41 is pulled.
The insulating outer layer 3 forms an integral sealing protection outside the hanging structure unless being destroyed and not detachable; the manufacturing method comprises the steps of injection molding, casting molding and the like, and the materials of the cable outer sheath material comprise PVC, polyolefin, epoxy resin and the like, but the compatibility of the cable outer sheath material and the cable outer sheath material is ensured, so that the sealing performance is ensured.
In addition, chamfers 31 and 32 are formed on the surface of the insulating outer layer 3 corresponding to the positions of the bolt hook 1 and the cable end 4, so that the occurrence of an acute angle is avoided, and the damage is easily caused.
Further, the isolation hanging block 2 is a thick-wall circular cylinder, the axis is a bolt hole 21, 2-5 axial conductor holes 22 are uniformly distributed on the thick wall of the circular cylinder, the number of the conductor holes 22 corresponds to the number of cable conductor cores to be hung, and the isolation hanging block is made of bakelite, nylon, ceramic, epoxy resin and the like.
The manufacturing process of the low-voltage multi-core cable comprises the following steps: 1. the bolt hook 1 is fastened with the isolation hanging block 2 in a linking way: the bolt 11 of the bolt hanger 1 is locked to the isolation hanger 2 by two tightening nuts 12 and washers 13, one of which tightening nuts 12 and washers 13 fits into the nut recess 23 of the isolation hanger 2. 2. Engagement of the multicore cable conductor 41 with the isolation hanging block 2: after the outer sheath of the cable end 4 is stripped to a length of about 20-30 cm (the specific length is determined according to the cable specification), the insulating layer of each cable core 40 is stripped to a length of about 10-20 cm (the specific length is determined according to the cable specification), then the conductor 41 of the cable core 40 passes through the peripheral conductor hole 22 of the isolation hanging block 2, and a conductor locking piece 42 is compressed and locked outside the tail end of the conductor 41, so that the conductor 41 cannot exit the conductor hole 22, then the conductor tail end single wire 43 is bent and folded to cover the outside of the conductor locking piece 42, and then the single wire locking piece 44 is compressed and locked outside the bent and folded conductor tail end single wire 43, so that the conductor locking piece 42 cannot slip when the conductor 41 is pulled. 3. And (3) manufacturing an outer layer insulating coating: after the whole suspension structure is assembled through the two steps, the insulating outer layer 3 is manufactured on the outer layer of the suspension structure in the modes of injection molding, molding or casting, and the like, so that the sealing insulating performance of the suspension structure is ensured. The invention is applied to low-voltage multi-core cables, the length of the required cable end 4 is only 0.3-0.5 m, and the space height required by cables and installation is saved.
The foregoing is merely exemplary of the present invention and is not intended to limit the present invention. It should be noted that modifications without creative contribution can be made by those skilled in the art after reading the present specification, but are protected by patent laws within the scope of claims of the present invention.
Claims (9)
1. The utility model provides a low pressure multicore cable tip insulation seals linkage which characterized in that: comprises a bolt hook, an isolation hanging block and an insulating outer layer; the bolt hook is a bolt with a hook at one end; the center of the isolation hanging block is provided with a bolt hole for bolt fixing of the bolt hook, and the periphery of the isolation hanging block is provided with a plurality of conductor holes for each cable core conductor at the end part of the cable to pass through and fix respectively; coating an insulating outer layer outside the isolation hanging block, so that the bolts of the bolt hooks, the isolation hanging block and the cable end part are coated in the insulating outer layer, and the insulating outer layer forms an integral sealing protection;
The conductor fixing structure of the cable end part is as follows: the conductor locking piece is fixed on the conductor passing through the conductor hole, so that the conductor cannot exit the conductor hole, the single wire at the tail end of the conductor is outwards folded and covered outside the conductor locking piece, and then the single wire locking piece is fixed on the periphery of the single wire at the tail end of the conductor after being bent and folded, so that the conductor locking piece cannot slip when the conductor is pulled.
2. A low voltage multi-conductor cable end insulation seal suspension device as defined in claim 1 wherein: the bolts of the bolt hooks are fixed in the bolt holes of the isolation hanging blocks by means of the combination of fastening nuts and gaskets at two ends.
3. A low voltage multi-conductor cable end insulation seal suspension device as defined in claim 1 wherein: the bolt hook is made of common steel or stainless steel.
4. A low voltage multi-conductor cable end insulation seal suspension device as defined in claim 1 wherein: the bottom of the bolt hole of the isolation hanging block is provided with a nut sinking groove for accommodating a fastening nut and a gasket at the end part of the bolt.
5. A low voltage multi-conductor cable end insulation seal suspension device as defined in claim 1 wherein: the isolating hanging block is thick-wall circular ring column-shaped, the axle center is a bolt hole, and the thick wall of the circular ring column is uniformly distributed with 2-5 axial conductor holes.
6. A low voltage multi-conductor cable end insulation seal suspension device as defined in claim 1 wherein: the isolation hanging block is made of bakelite, nylon, ceramic or epoxy resin.
7. A low voltage multi-conductor cable end insulation seal suspension device as defined in claim 1 wherein: the insulating outer layer is formed by injection molding or casting molding.
8. A low voltage multi-conductor cable end insulation seal suspension device as defined in claim 1 wherein: the insulating outer layer is made of PVC, polyolefin or epoxy resin.
9. A low voltage multi-conductor cable end insulation seal suspension device as defined in claim 1 wherein: and chamfers are formed on the surfaces of the insulating outer layers corresponding to the bolt hooks and the cable ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410146916.1A CN118008939A (en) | 2018-12-28 | 2018-12-28 | Insulating sealed linkage of low pressure multicore cable tip |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410146916.1A CN118008939A (en) | 2018-12-28 | 2018-12-28 | Insulating sealed linkage of low pressure multicore cable tip |
| CN201811617570.XA CN109861150B (en) | 2018-12-28 | 2018-12-28 | Insulating linkage of low tension cable tip |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811617570.XA Division CN109861150B (en) | 2018-12-28 | 2018-12-28 | Insulating linkage of low tension cable tip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118008939A true CN118008939A (en) | 2024-05-10 |
Family
ID=66892857
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811617570.XA Active CN109861150B (en) | 2018-12-28 | 2018-12-28 | Insulating linkage of low tension cable tip |
| CN202410146916.1A Pending CN118008939A (en) | 2018-12-28 | 2018-12-28 | Insulating sealed linkage of low pressure multicore cable tip |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811617570.XA Active CN109861150B (en) | 2018-12-28 | 2018-12-28 | Insulating linkage of low tension cable tip |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN109861150B (en) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001145248A (en) * | 1999-11-17 | 2001-05-25 | Furukawa Electric Co Ltd:The | Suspending terminal for power cable |
| CN2606977Y (en) * | 2003-02-13 | 2004-03-17 | 河北省线缆科学技术研究所有限公司 | Three core cable tracting head |
| CN101447655A (en) * | 2007-11-26 | 2009-06-03 | 刘忠良 | Device and method for towing multi-core cable |
| JP2011229296A (en) * | 2010-04-20 | 2011-11-10 | Sumitomo Electric Ind Ltd | End structure for superconducting cable |
| CN203056463U (en) * | 2013-01-21 | 2013-07-10 | 谢鹏程 | Novel single core high voltage cable traction head |
| KR102386729B1 (en) * | 2015-08-07 | 2022-04-13 | 엘에스전선 주식회사 | Installation method of pulling eye for submarine cable and Submarine cable having the pulling eye |
| CN105305362A (en) * | 2015-12-02 | 2016-02-03 | 何亮 | Cable connector |
| CN105390193A (en) * | 2015-12-03 | 2016-03-09 | 福建南平太阳电缆股份有限公司 | Self-floating cable |
| JP6404302B2 (en) * | 2016-11-30 | 2018-10-10 | 昭和電線ケーブルシステム株式会社 | Method for assembling terminal connection part of power coaxial cable |
| CN208141852U (en) * | 2018-04-09 | 2018-11-23 | 福建南平太阳电缆股份有限公司 | Special-shaped single line compact conductor midium voltage cable |
| CN209184197U (en) * | 2018-12-28 | 2019-07-30 | 福建南平太阳电缆股份有限公司 | A kind of low voltage single core cable end insulation suspension arrangement |
| CN209184198U (en) * | 2018-12-28 | 2019-07-30 | 福建南平太阳电缆股份有限公司 | A kind of low pressure multicore cable overhang insulation suspension arrangement |
-
2018
- 2018-12-28 CN CN201811617570.XA patent/CN109861150B/en active Active
- 2018-12-28 CN CN202410146916.1A patent/CN118008939A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN109861150B (en) | 2024-03-19 |
| CN109861150A (en) | 2019-06-07 |
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