CN111564265A - Strain insulator string is hung and is established device - Google Patents

Strain insulator string is hung and is established device Download PDF

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Publication number
CN111564265A
CN111564265A CN202010255611.6A CN202010255611A CN111564265A CN 111564265 A CN111564265 A CN 111564265A CN 202010255611 A CN202010255611 A CN 202010255611A CN 111564265 A CN111564265 A CN 111564265A
Authority
CN
China
Prior art keywords
cable
insulator string
clamping block
crimping pipe
sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202010255611.6A
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Chinese (zh)
Other versions
CN111564265B (en
Inventor
刘平平
张道安
蒋锋
谢英男
章旭泳
方杰
丁瀚
王志勇
缪正
黄松林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HUZHOU ELECTRIC POWER DESIGN INSTITUTE CO LTD
Huzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Original Assignee
HUZHOU ELECTRIC POWER DESIGN INSTITUTE CO LTD
Huzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by HUZHOU ELECTRIC POWER DESIGN INSTITUTE CO LTD, Huzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd filed Critical HUZHOU ELECTRIC POWER DESIGN INSTITUTE CO LTD
Priority to CN202010255611.6A priority Critical patent/CN111564265B/en
Publication of CN111564265A publication Critical patent/CN111564265A/en
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Publication of CN111564265B publication Critical patent/CN111564265B/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/02—Suspension insulators; Strain insulators
    • H01B17/06—Fastening of insulator to support, to conductor, or to adjoining insulator
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/02—Suspension insulators; Strain insulators
    • H01B17/06—Fastening of insulator to support, to conductor, or to adjoining insulator
    • H01B17/08—Fastening of insulator to support, to conductor, or to adjoining insulator by cap-and-bolt
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/38—Fittings, e.g. caps; Fastenings therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00—Overhead installations of electric lines or cables

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  • Insulators (AREA)

Abstract

The invention discloses a strain insulator string hanging device which comprises a connecting beam, an insulator string, a connecting plate and a crimping pipe, wherein the connecting beam, the insulator string, the connecting plate and the crimping pipe are arranged on a cross arm; the cable is sleeved with a cable clamp, the cable clamp is connected with the slip ring through a connecting bolt, and when the cable is slipped from the crimping pipe, the slip ring slides along the axial direction of the crimping pipe under the pulling of the cable clamp and enables the contraction sleeve to be tightly held with the cable; the surface of the wire clamp contacting with the cable is provided with a cushion layer. According to the invention, when the cable slips off from the crimping pipe under the action of external force, the contraction sleeve arranged on the crimping pipe can tightly hold the cable in time, so that the cable is prevented from being broken, and the large economic loss is avoided.

Description

Strain insulator string is hung and is established device
Technical Field
The invention relates to the technical field of electric power fittings, in particular to a strain insulator string hanging device.
Background
The high-voltage cable is usually hung on a high-voltage iron tower through an insulator string hanging device, the existing insulator string hanging device mainly comprises at least one insulator string and a connecting plate, one end of the insulator string is fixed on a cross arm of the high-voltage iron tower, the other end of the insulator string is connected with the connecting plate, and a crimping pipe used for connecting the cable is fixedly arranged on the connecting plate. The crimping pipe is of a tubular structure, when the cable is connected, the end of the cable extends into the crimping pipe, and then the crimping pipe is extruded and deformed by using special crimping equipment, so that the crimping pipe is firmly sleeved on the cable. In the in-service use process, the cable is receiving exogenic action such as strong wind or ice and snow pressure down, and the axis pulling force of cable can greatly increased, causes the cable to follow slippage in the crimping pipe very easily, causes the cable fracture, causes great economic loss, also causes great incident easily simultaneously.
Disclosure of Invention
The invention aims to solve the problem that a cable is easy to slip from a crimping pipe under the action of external force to cause great economic loss in the use process of the conventional insulator string hanging device, and provides a strain insulator string hanging device which can effectively solve the problem.
The purpose of the invention is realized by the following technical scheme: a strain insulator string hanging device comprises a connecting beam, an insulator string, a connecting plate and a crimping pipe which are arranged on a cross arm, wherein one end of the insulator string is connected with the connecting beam, the other end of the insulator string is connected with the connecting plate, one end of the crimping pipe is fixed on the connecting plate, one end of a cable is connected into the crimping pipe, the crimping pipe comprises a pipe body and a contraction sleeve, the contraction sleeve is arranged at one end, far away from the connecting plate, of the pipe body, and a sliding ring capable of sliding along the axial direction of the crimping pipe is sleeved on the crimping pipe; the cable is sleeved with a cable clamp, the cable clamp is connected with the slip ring through a connecting bolt, and when the cable is slipped from the crimping pipe, the slip ring slides along the axial direction of the crimping pipe under the pulling of the cable clamp and enables the contraction sleeve to be tightly held with the cable; the surface of the wire clamp contacting with the cable is provided with a cushion layer.
According to the tension insulator string hanging device, when the cable slips from the crimping pipe under the action of external force, the cable clamp fixed on the cable can move along with the cable in the direction of slipping of the cable, the cable clamp pulls the sliding ring to slide along the axial direction of the crimping pipe through the connecting bolt, the sliding ring can enable the shrinkage pipe to shrink inwards and tightly hold the cable in the sliding process, so that the cable is prevented from being separated from the tension insulator string hanging device, the cable is prevented from being broken, large economic loss is avoided, and safety accidents are avoided. The cushion layer can increase the frictional force between the wire clamp and the cable, and the relative sliding between the wire clamp and the cable is avoided.
Preferably, the insulator strings are arranged in a vertical direction.
Preferably, the diameter of one end, away from the pipe body, of the shrinkage sleeve is larger than that of the other end of the shrinkage sleeve, and a plurality of shrinkage gaps are formed in the circumferential direction of the shrinkage sleeve. When the cable slips from the crimping pipe, the slip ring can slide towards the one end with the larger diameter on the shrink sleeve under the pulling of connecting bolt, and in the sliding process, the slip ring can cause inward extrusion force to the shrink sleeve, so that the shrink sleeve contracts inwards, and the shrink sleeve holds the cable tightly.
Preferably, the inner diameter of the slip ring is larger than the smallest diameter of the shrink sleeve and smaller than the largest diameter of the shrink sleeve.
Preferably, the wire clamp comprises an upper clamping block and a lower clamping block, the upper clamping block and the lower clamping block are connected through compression bolts, the upper clamping block and the lower clamping block are respectively provided with an upper bolt hole and a lower bolt hole, the sliding ring is provided with first threaded holes corresponding to the upper bolt hole and the lower bolt hole, the number of the connecting bolts is two, and the two connecting bolts penetrate through the upper bolt hole and the lower bolt hole respectively and are connected with the corresponding first threaded holes.
Preferably, a second threaded hole is formed in the sliding ring and communicated with the first threaded hole, a check screw is connected into the second threaded hole, and the front end of the check screw abuts against the side face of the connecting bolt. The anti-loosening screw is tightly propped against the side face of the connecting bolt, so that the connecting bolt can be prevented from loosening.
Preferably, a first semicircular groove is formed in one side, close to the cable, of the upper clamping block, a second semicircular groove corresponding to the first semicircular groove is formed in one side, close to the cable, of the lower clamping block, and the cushion layer is attached to the surfaces of the first semicircular groove and the second semicircular groove.
Preferably, the cushion layer is made of rubber.
The invention has the beneficial effects that: according to the invention, when the cable slips off from the crimping pipe under the action of external force, the contraction sleeve arranged on the crimping pipe can tightly hold the cable in time, so that the cable is prevented from being broken, and the large economic loss is avoided.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the wire clamp.
Fig. 3 is an enlarged view of a portion a in fig. 1.
FIG. 4 is a schematic view of the structure of the crimp tube.
In the figure: 1. the connecting structure comprises a cross arm, 2, a connecting beam, 3, an insulator string, 4, a connecting plate, 5, a crimping pipe, 6, a cable, 7, an upper clamping block, 8, a lower clamping block, 9, a connecting bolt, 10, a sliding ring, 11, an upper bolt hole, 12, a lower bolt hole, 13, a compression bolt, 14, a first threaded hole, 15, a second threaded hole, 16, a locking screw, 17, a pipe body, 18, a shrinkage sleeve, 19, a connecting hole, 20 and a cushion layer.
Detailed Description
The invention is further described by the following detailed description in conjunction with the accompanying drawings.
Example 1:
as shown in fig. 1 to 4, a strain insulator string hanging device comprises a connecting beam 2, an insulator string 3, a connecting plate 4 and a crimping pipe 5 which are arranged on a cross arm 1. The insulator string 3 is provided with two in total. One end of the insulator string 3 is connected with the connecting beam 2, and the other end of the insulator string 3 is connected with the connecting plate 4. The insulator strings 3 are arranged in a vertical direction. The crimping pipe 5 comprises a pipe body 17, one end of the pipe body 17 is provided with a connecting hole 19, one end of the pipe body 17, which is provided with the connecting hole 19, is connected with the connecting plate 4 through a bolt, and the cable 6 is connected in the crimping pipe 5. The end of the tube body 17 remote from the connection hole 19 is provided with a shrink sleeve 18. The shrink sleeve 18 is integrally formed with the body. The diameter of the end, far away from the pipe body 17, of the shrinkage sleeve 18 is larger than that of the other end of the shrinkage sleeve, and a plurality of shrinkage gaps are formed in the circumferential direction of the shrinkage sleeve 18. The crimping pipe 5 is sleeved with a sliding ring 10 which can slide along the axial direction of the crimping pipe 5. The inner diameter of the slip ring 10 is greater than the minimum diameter of the shrink sleeve 18 and less than the maximum diameter of the shrink sleeve.
The cable 6 is connected with a wire clamp. The wire clamp comprises an upper clamping block 7 and a lower clamping block 8. The upper clamping block 7 and the lower clamping block 8 are connected through a compression bolt 13, and the cable 6 is clamped between the upper clamping block 7 and the lower clamping block 8. One side of the upper clamping block 7 close to the cable 6 is provided with a first semicircular groove, one side of the lower clamping block 8 close to the cable 6 is provided with a second semicircular groove corresponding to the first semicircular groove, and the surfaces of the first semicircular groove and the second semicircular groove are provided with a cushion layer 20 in an attaching manner. The cushion 20 is made of rubber. An upper bolt hole 11 is formed in the upper wire clamp 7, a lower bolt hole 12 is formed in the lower wire clamp 8, and a first threaded hole 14 corresponding to the upper bolt hole 11 and the lower bolt hole 12 is formed in the sliding ring 10. The wire clamp is connected with the slip ring 10 through a connecting bolt 9. Two connecting bolts 9 are provided, and the two connecting bolts 9 respectively pass through the upper bolt hole 11 and the lower bolt hole 12 and are connected with the corresponding first threaded holes 14. The sliding ring 10 is provided with a second threaded hole 15, the second threaded hole 15 is communicated with the first threaded hole 14, a locking screw 16 is connected in the second threaded hole 15, and the front end of the locking screw 16 is tightly propped against the side face of the connecting bolt 9.
According to the invention, when the cable slips from the crimping pipe under the action of external force, the slip ring slides towards one end with a larger diameter on the contraction sleeve under the pulling of the connecting bolt, and in the sliding process, the slip ring can generate inward extrusion force on the contraction sleeve, so that the contraction sleeve contracts inwards, and the contraction sleeve holds the cable tightly. Thereby prevent that cable and strain insulator string from hanging and establishing the device and breaking away from, avoided the fracture of cable, avoid drawing the big economic loss of jack-up, also avoided the emergence of incident simultaneously.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (8)

1. The utility model provides a strain insulator string hangs establishes device, includes tie-beam, insulator string, connecting plate, the crimping pipe that sets up on the cross arm, insulator string one end links to each other with the tie-beam, and the other end links to each other with the connecting plate, and crimping pipe one end is fixed on the connecting plate, and the one end of cable is connected in the crimping pipe, its characterized in that: the compression joint pipe comprises a pipe body and a contraction sleeve, the contraction sleeve is arranged at one end of the pipe body far away from the connecting plate, and a sliding ring capable of sliding along the axial direction of the compression joint pipe is sleeved on the compression joint pipe; the cable is sleeved with a cable clamp, the cable clamp is connected with the slip ring through a connecting bolt, and when the cable is slipped from the crimping pipe, the slip ring slides along the axial direction of the crimping pipe under the pulling of the cable clamp and enables the contraction sleeve to be tightly held with the cable; the surface of the wire clamp contacting with the cable is provided with a cushion layer.
2. The strain insulator string hanging device according to claim 1, wherein the insulator strings are arranged in a vertical direction.
3. The strain insulator string hanging device as claimed in claim 1, wherein the diameter of one end of the shrinkage sleeve, which is far away from the tube body, is larger than that of the other end of the shrinkage sleeve, and a plurality of shrinkage gaps are arranged on the circumference of the shrinkage sleeve.
4. The strain insulator string hanging device as claimed in claim 3, wherein the inner diameter of the slip ring is larger than the minimum diameter of the shrink sleeve and smaller than the maximum diameter of the shrink sleeve.
5. The device for hanging the strain insulator string on the line according to claim 1, wherein the wire clamp comprises an upper clamping block and a lower clamping block, the upper clamping block and the lower clamping block are connected through compression bolts, the upper clamping block and the lower clamping block are respectively provided with an upper bolt hole and a lower bolt hole, the sliding ring is provided with first threaded holes corresponding to the upper bolt hole and the lower bolt hole, the number of the connecting bolts is two, and the two connecting bolts respectively penetrate through the upper bolt hole and the lower bolt hole and are connected with the corresponding first threaded holes.
6. The strain insulator string hanging device as claimed in claim 5, wherein the slip ring is provided with a second threaded hole, the second threaded hole is communicated with the first threaded hole, a check screw is connected in the second threaded hole, and the front end of the check screw abuts against the side face of the connecting bolt.
7. The device for hanging the strain insulator string on according to claim 5, wherein a first semicircular groove is formed on one side of the upper clamping block close to the cable, a second semicircular groove corresponding to the first semicircular groove is formed on one side of the lower clamping block close to the cable, and the cushion layer is attached to the surfaces of the first semicircular groove and the second semicircular groove.
8. The device for hanging the strain insulator string on according to claim 1, wherein the cushion layer is made of rubber.
CN202010255611.6A 2020-04-02 2020-04-02 Strain insulator string is hung and is established device Active CN111564265B (en)

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Application Number Priority Date Filing Date Title
CN202010255611.6A CN111564265B (en) 2020-04-02 2020-04-02 Strain insulator string is hung and is established device

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Application Number Priority Date Filing Date Title
CN202010255611.6A CN111564265B (en) 2020-04-02 2020-04-02 Strain insulator string is hung and is established device

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CN111564265A true CN111564265A (en) 2020-08-21
CN111564265B CN111564265B (en) 2021-11-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112993883A (en) * 2021-03-15 2021-06-18 中国原子能科学研究院 Cable clamp and ionization chamber suspension device in reactor

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2195814Y (en) * 1994-04-06 1995-04-26 胡定超 Automatic cable clamp
JPH09308070A (en) * 1996-05-10 1997-11-28 Toshio Saito Fixing packing for armored cable
CN2335288Y (en) * 1998-06-02 1999-08-25 王瑞玲 Isolation durable wire clip for electricity tarnsmission and distributing line
CN2419721Y (en) * 2000-03-16 2001-02-14 高正贤 Anti-skid cable dip
CN201413909Y (en) * 2009-04-13 2010-02-24 中航光电科技股份有限公司 Tensile-resistant anti-looseness connector
CN101814711A (en) * 2009-11-17 2010-08-25 徐州宇飞电力科技有限公司 Energy-saving automatic strain clamp
CN204216535U (en) * 2014-10-18 2015-03-18 福州万山电力咨询有限公司 110KV line project duplex improves strain insulator-string
CN206155217U (en) * 2016-08-31 2017-05-10 任兴堂 Copper alloy terminal anchor fastener

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2195814Y (en) * 1994-04-06 1995-04-26 胡定超 Automatic cable clamp
JPH09308070A (en) * 1996-05-10 1997-11-28 Toshio Saito Fixing packing for armored cable
CN2335288Y (en) * 1998-06-02 1999-08-25 王瑞玲 Isolation durable wire clip for electricity tarnsmission and distributing line
CN2419721Y (en) * 2000-03-16 2001-02-14 高正贤 Anti-skid cable dip
CN201413909Y (en) * 2009-04-13 2010-02-24 中航光电科技股份有限公司 Tensile-resistant anti-looseness connector
CN101814711A (en) * 2009-11-17 2010-08-25 徐州宇飞电力科技有限公司 Energy-saving automatic strain clamp
CN204216535U (en) * 2014-10-18 2015-03-18 福州万山电力咨询有限公司 110KV line project duplex improves strain insulator-string
CN206155217U (en) * 2016-08-31 2017-05-10 任兴堂 Copper alloy terminal anchor fastener

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112993883A (en) * 2021-03-15 2021-06-18 中国原子能科学研究院 Cable clamp and ionization chamber suspension device in reactor

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