CN101814708B - Method for pre-expanding cold-shrinking cable accessory - Google Patents

Method for pre-expanding cold-shrinking cable accessory Download PDF

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Publication number
CN101814708B
CN101814708B CN200910111093A CN200910111093A CN101814708B CN 101814708 B CN101814708 B CN 101814708B CN 200910111093 A CN200910111093 A CN 200910111093A CN 200910111093 A CN200910111093 A CN 200910111093A CN 101814708 B CN101814708 B CN 101814708B
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CN
China
Prior art keywords
cable accessory
cold
steel wire
expansion
shrinking
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.)
Expired - Fee Related
Application number
CN200910111093A
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Chinese (zh)
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CN101814708A (en
Inventor
贾冬霞
刘建灿
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.)
Sevenstars Electric Co ltd
Original Assignee
QUANZHOU SEVENSTARS ELECTRIC CO Ltd
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Publication date
Application filed by QUANZHOU SEVENSTARS ELECTRIC CO Ltd filed Critical QUANZHOU SEVENSTARS ELECTRIC CO Ltd
Priority to CN200910111093A priority Critical patent/CN101814708B/en
Publication of CN101814708A publication Critical patent/CN101814708A/en
Application granted granted Critical
Publication of CN101814708B publication Critical patent/CN101814708B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention aims to provide a method for pre-expanding a cold-shrinking cable accessory, which comprises the following steps: expanding the cold-shrinking cable accessory by using a steel wire tensioned between two corresponding expansion discs; sleeving a support tube on an expansion bar of which one end is provided with an expansion cone head, and sleeving an end cap at the other end of the expansion bar; pushing the end cap through a cylinder piston so as to forward push the expansion bar and the support tube together along the axial direction of the cable accessory till the expansion cone head of the expansion bar is fully pushed out of the other end of the cable accessory; and finally, removing the end cap, the expansion bar and the steel wire in turn, and shrinking and clasping the cable accessory outside the support tube so as to finish pre-expanding. The cable accessory is expanded by adopting the steel wire, the steel wire material is easily obtained and does not need to be polished, the steel wire is cheaper than a steel bar, and the steel wire for expanding the cable accessory can be pulled out by using mechanical operation, so the labor intensity of operators is lightened, the expanding speed is high and the work efficiency is improved; and the surface of the steel wire has good degree of finish, so the steel wire has little damage to the inner wall of the cold-shrinking cable accessory, ensures the safety of the cable accessory and improves the quality of a product.

Description

A kind of method for pre-expanding of cold-shrinking cable accessory
Technical field
The invention belongs to power equipment attachment technique field, specifically is a kind of method for pre-expanding of cold-shrinking cable accessory.
Background technology
Cold-shrinking cable accessory is a kind of electric power annex of using always; Pre existing expansion cold-shrinking cable accessory mainly is to adopt the steel bar predilation; The shortcoming of steel bar predilation is that the strip material quality requirement is high and also want necessary through strict heat treatment, requires to have higher hardness and definite shape; The surface smoothness to steel bar of most critical requires than higher; If surface smoothness is not carried out the inner surface that just scratches cold-shrinking cable accessory easily, predilation speed also can scratch a product inner surface too soon, causes serious quality problems; And steel bar is not easy to pull out, and labor intensity of operating personnel is bigger, pull out operation at steel bar and the time cause the steel bar fracture again easily, the cost of steel bar than higher, the process-cycle is long, cost is high, directly influences working (machining) efficiency, improves the predilation processing cost.
Summary of the invention
What the present invention will solve is to have now to utilize the existing technical problem of steel bar predilation cold-shrinking cable accessory, and a kind of method for pre-expanding of cold-shrinking cable accessory is provided.
The method for pre-expanding of cold-shrinking cable accessory provided by the invention, it comprises following operating procedure:
A) some steel wires are passed cold-shrinking cable accessory to be expanded, utilize the two ends of the expansion dish difference clamped wire of corresponding intrument on first, second station of workbench in advance;
B) enlarge the Pan Kou and the taut wire of two expansion dishes synchronously, utilize steel wire expansion cold-shrinking cable accessory, the cold-shrinking cable accessory enlarged-diameter to scheduled volume, and is kept the support state of steel wire;
C) have the dilator bar of expanding conehead based on cold-shrinking cable accessory size Selection one end; The stay pipe activity is nested with on the dilator bar of spreader cone back of head; And with the expansion conehead relative sheathed end cap of the dilator bar other end, with the stay pipe pressure holding between expansion conehead and end cap;
The spreader cone head end that d) will be arranged with the dilator bar of stay pipe, end cap inserts in the corresponding port of the cold-shrinking cable accessory that is supported on the steel wire after passing an expansion center hole, and keeps dilator bar and cold-shrinking cable accessory coaxial line layout;
E) start the cylinder of arranging with the cold-shrinking cable accessory coaxial line that is supported on the steel wire on the device busy platform in advance; Promote end cap through overhanging cylinder piston dilator bar and stay pipe are axially pushed forward along cold-shrinking cable accessory in the lump, release the other end of cold-shrinking cable accessory until the spreader cone epicranium of dilator bar fully;
F) end cap on the dilator bar is removed, and pulled out dilator bar through the expansion conehead;
G) lay down steel wire on the expansion dish, extract steel wire, cold-shrinking cable accessory bounces back obvolvent automatically outside stay pipe, and so far predilation finishes.
Above-mentioned method for pre-expanding adopts steel wire to support cold-shrinking cable accessory, and wire material obtains easily, need not polish, and price is more cheap than steel bar; Mechanical work capable of using is pulled out the steel wire that supports cold-shrinking cable accessory; Alleviate labor intensity of operating personnel, expansion rate is fast, improves operating efficiency; And the surface smoothness of steel wire is good, and is little to the damage of cold-shrinking cable accessory inwall, guarantees the safety of cold-shrinking cable accessory, improves the quality of products.
Description of drawings
Below in conjunction with accompanying drawing the utility model is done further explain.
Fig. 1 is the sketch map of method for pre-expanding steel wire expansion cold-shrinking cable accessory of the present invention.
Fig. 2 is method for pre-expanding cylinder of the present invention pushes stay pipe through dilator bar a sketch map.
Fig. 3 is the sketch map of cold-shrinking cable accessory obvolvent stay pipe after method for pre-expanding predilation of the present invention is accomplished.
Embodiment
Referring to figs. 1 through Fig. 3.The method for pre-expanding of cold-shrinking cable accessory provided by the invention, it comprises following operating procedure:
A) some steel wires 1 are passed cold-shrinking cable accessory to be expanded 2, utilize expansion dish 31,32 two ends of clamped wire 1 respectively on first, second station of device busy platform in advance;
B) enlarge the Pan Kou of expansion dish 31,32 and strain all steel wires 1 synchronously, utilize steel wire 1 expansion cold-shrinking cable accessory 2 (referring to Fig. 1);
C) have the dilator bar 4 of expanding conehead 41 based on cold-shrinking cable accessory 2 size Selection one end; Stay pipe 5 activities are nested with on the dilator bar at expansion conehead 41 rear portions; And with the relative sheathed end cap 6 of dilator bar 4 other ends of expansion conehead 41, with stay pipe 5 pressure holdings between expansion conehead 41 and end cap 6 (referring to Fig. 2);
Expansion conehead 41 ends that d) will be arranged with the dilator bar of stay pipe 5, end cap 6 pass expansion and coil to insert behind 31 centre bores and be supported in the cold-shrinking cable accessory 2 corresponding ports on the steel wire 1, and keep dilator bar 4 and cold-shrinking cable accessory 2 coaxial lines to arrange (referring to Fig. 2);
E) start the cylinder of arranging with cold-shrinking cable accessory 2 coaxial lines that are supported on the steel wire 1 on the device busy platform in advance 7; Promote end cap 6 through overhanging cylinder piston 71 dilator bar 4 and stay pipe 5 are axially pushed forward along cold-shrinking cable accessory 2 in the lump, released expansion fully until the conehead 41 of dilator bar and coil outside 32 centre bores;
F) end cap on the dilator bar 46 is removed, and pulled out dilator bar 4 through expansion conehead 41;
G) lay down all steel wires 1 on the expansion dish 31,32; And all steel wires 1 are extracted; Cold-shrinking cable accessory 2 bounces back obvolvent automatically outside stay pipe 5; So far predilation finishes, and just obtains the cold-shrinking cable accessory 2 of obvolvent outside stay pipe 5 behind the predilation shown in Fig. 3, and stay pipe 5 works the effect of supporting makes cold-shrinking cable accessory 2 keep expansion states.
Above-mentioned end cap also can be employed in an affixed diameter on the cylinder piston termination and replace greater than the platen of stay pipe, utilizes end cap, platen can realize equally the stay pipe that activity is nested with on dilator bar is pushed in the cold-shrinking cable accessory of expansion state.
The above is merely preferred embodiment of the present invention, so can not limit the scope that the present invention implements with this, the equivalence of promptly doing according to claim of the present invention and description changes and modifies, and all should still belong in the scope that patent of the present invention contains.

Claims (2)

1. the method for pre-expanding of a cold-shrinking cable accessory, it comprises following operating procedure:
A) some steel wires are passed cold-shrinking cable accessory to be expanded, utilize the corresponding in advance two ends that are installed in the expansion dish difference clamped wire on first, second station of workbench;
B) enlarge the Pan Kou and the taut wire of two expansion dishes synchronously, utilize steel wire to support cold-shrinking cable accessory;
C) have the dilator bar of expanding conehead based on cold-shrinking cable accessory size Selection one end; The stay pipe activity is nested with on the dilator bar of spreader cone back of head; And with the expansion conehead relative sheathed end cap of the dilator bar other end, with the stay pipe pressure holding between expansion conehead and end cap;
The spreader cone head end that d) will be arranged with the dilator bar of stay pipe, end cap inserts in the corresponding port of the cold-shrinking cable accessory that is supported on the steel wire after passing an expansion center hole, and keeps dilator bar and cold-shrinking cable accessory coaxial line layout;
E) start the cylinder that is installed on the workbench in advance and is supported in the cold-shrinking cable accessory coaxial line layout on the steel wire; Through overhanging cylinder piston promote end cap with dilator bar and stay pipe in the lump along axially propelling movement forward of cold-shrinking cable accessory, release the other end of cold-shrinking cable accessory fully until the spreader cone epicranium of dilator bar at least;
F) end cap on the dilator bar is removed, and pulled out dilator bar through the expansion conehead;
G) lay down steel wire on the expansion dish, extract steel wire, the obvolvent of cold-shrinking cable accessory retraction is outside stay pipe, and so far predilation finishes.
2. method for pre-expanding according to claim 1 is characterized in that: among the said step e, the spreader cone epicranium of dilator bar is released outside another expansion center hole fully.
CN200910111093A 2009-02-19 2009-02-19 Method for pre-expanding cold-shrinking cable accessory Expired - Fee Related CN101814708B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200910111093A CN101814708B (en) 2009-02-19 2009-02-19 Method for pre-expanding cold-shrinking cable accessory

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200910111093A CN101814708B (en) 2009-02-19 2009-02-19 Method for pre-expanding cold-shrinking cable accessory

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CN101814708A CN101814708A (en) 2010-08-25
CN101814708B true CN101814708B (en) 2012-08-29

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102290777A (en) * 2011-08-08 2011-12-21 保定冀开电力器材有限公司 Power cable accessory terminal and expansion method thereof
CN106015148B (en) * 2016-08-04 2017-12-08 江苏智光创业投资有限公司 The positive and negative hydraulic driver of shrinkage cable sealing cap installation tool
CN106451257B (en) * 2016-12-07 2018-06-15 七星电气股份有限公司 A kind of cold shrinking power cable adjunct predilation device and method
CN117712978B (en) * 2024-02-04 2024-04-23 成都盛帮双核科技有限公司 High-voltage cable terminal for offshore wind power, and preparation method and assembly method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5735981A (en) * 1993-04-07 1998-04-07 Raychem Limited Substrate covering
EP0784367B1 (en) * 1995-12-04 2000-12-13 N.V. Raychem S.A. Device for covering a splice connection
CN1674379A (en) * 2004-03-23 2005-09-28 深圳市沃尔热缩材料有限公司 Cold shrinking cable fitting expanded by new method
CN101262122A (en) * 2008-04-14 2008-09-10 浙江万马集团电气有限公司 An expansion method for cool contraction cable accessory

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5735981A (en) * 1993-04-07 1998-04-07 Raychem Limited Substrate covering
EP0784367B1 (en) * 1995-12-04 2000-12-13 N.V. Raychem S.A. Device for covering a splice connection
CN1674379A (en) * 2004-03-23 2005-09-28 深圳市沃尔热缩材料有限公司 Cold shrinking cable fitting expanded by new method
CN101262122A (en) * 2008-04-14 2008-09-10 浙江万马集团电气有限公司 An expansion method for cool contraction cable accessory

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
苗润忠等.高压电缆硅橡胶冷缩户外终端绝缘体模压成型的模具设计.《长春理工大学学报》.2008,第31卷(第4期),131-132. *

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Address after: 362000 Qixing Industrial Park, Jiangnan high tech electronic Park, Quanzhou, Fujian

Patentee after: SEVENSTARS ELECTRIC CO.,LTD.

Address before: 362000 Qixing Industrial Park, Jiangnan high tech electronic Park, Quanzhou, Fujian

Patentee before: QUANZHOU SEVENSTARS ELECTRIC Co.,Ltd.

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120829

Termination date: 20220219