CN102887083A - Pre-twisted insulated protective strip for contact system - Google Patents
Pre-twisted insulated protective strip for contact system Download PDFInfo
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- CN102887083A CN102887083A CN2011102011238A CN201110201123A CN102887083A CN 102887083 A CN102887083 A CN 102887083A CN 2011102011238 A CN2011102011238 A CN 2011102011238A CN 201110201123 A CN201110201123 A CN 201110201123A CN 102887083 A CN102887083 A CN 102887083A
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- wire
- insulation protection
- protective strip
- contact system
- preformed insulation
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Abstract
The invention discloses a pre-twisted insulated protective strip for a contact system. The protective strip comprises 2-4 helical insulated pre-twisted yarn sheets. The pre-twisted insulated protective strip for the contact system disclosed by the invention wraps an outer side of a wire and is capable of bearing 30 kV of high voltage. The pre-twisted insulated protective strip is high in strength and rigidity and wraps on the outer side of the wire to prevent the wire from being hurt by an external force, the rigidity of the wire is improved, the stress strain of the wire is reduced, the fatigue resistance performance of the wire is improved, and the fatigue damage of the wire can be effectively avoided. Meanwhile, the grip force of the pre-twisted insulated protective strip for the contact system on the wire is uniform without stress concentration. In addition, the pre-twisted insulated protective strip for the contact system has the advantages that the pre-twisted insulated protective strip can be mounted by hands without using tools and operated simply and conveniently.
Description
Technical field
The present invention relates to the railway contact line technical field, particularly relate to a kind of contact system with preformed insulation protection bar.
Background technology
Along with the development of China's electrified railway, more and more higher to the performance requriements of contact nets in electrified railways parts.The effect of OCS Messenger Wire is by dropper contact wire to be hung up.Catenary also can carry certain electric current and reduce impedance of traction electric network, reduces voltage loss and energy consumption.
Often there is the phenomenon of crossing in the electric railway catenary in actual track.In service affected by vibration, can the phenomenon that catenary collides occur in leap place usually.On the one hand because discharging can appear in voltage difference and the problem of scaling loss catenary; On the other hand, in crossing place catenary occuring because of collision and vibration fatigue and destroy, affect safe railway operation, increases inspection and maintenance cost.
The orthodox method that addresses this problem is wrap insulate sheath on the catenary of infall.Insulating sheath has solved crossing place two with the electric insulating problem of holding between the rope of limit, has avoided discharge.But the insulating sheath internal diameter is that pine is enclosed within on the catenary greater than the catenary external diameter, needs other householder method to be fixed on the catenary.The installation of insulating sheath needs special tool, otherwise installs and removes cumbersome.In addition, insulating sheath intensity is low, and the mechanical protection of catenary is not almost had.
Summary of the invention
The invention provides a kind of preformed insulation protection bar, exist catenary in the problem of crossing place electric insulating in the prior art in order to solve, and strengthen catenary rigidity, improve the catenary anti-fatigue performance.
For reaching above-mentioned purpose, on the one hand, the invention provides a kind of preformed insulation protection bar, described sparring comprises two screw-shaped preformed armor rods sheets, the central authorities of two described preformed armor rods sheets are intertwined, and form the sealing pipe.
Further, every described preformed armor rods sheet is comprised of some one metal wires, and every one metal wire all is prefabricated into spiral fashion lines consistent in shape and size.
Further, described metal filament adopts welding wire, galvanized steel wire or Cu-Mg alloy wire.
Further, described sparring silk sheet is surrounded by insulation sheath outward.
Further, described sparring is wound in outside the wire.
Further, the inner diameter d 1 of described sparring is less than wire diameter D1, and d1 is 0.80～0.90 times of D1.
Beneficial effect of the present invention is as follows:
The preformed insulation protection bar of the embodiment of the invention is evenly distributed on the whole installation length the grip force of catenary, does not have stress to concentrate; The insulation protection bar tightly is wrapping to the wire outside in addition, also strengthens its anti-fatigue performance when playing the insulation protection effect, effectively avoids the endurance failure of wire; In addition, preformed armor rods structure, installation process need not the increase instrument, and sparring is free-hand can finish installation, and fitting operation is simple and efficient.
Description of drawings
Fig. 1 is the structural representation of a kind of preformed armor rods insulation protection of embodiment of the invention bar monolithic;
Fig. 2 is that a kind of preformed insulation protection bar of the embodiment of the invention is installed in the structural representation on the wire.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, does not limit the present invention.
The contact system that the embodiment of the invention relates to is a kind of contact nets in electrified railways part with preformed insulation protection bar (hereinafter to be referred as sparring), has infall to use at OCS Messenger Wire, effectively avoids contact short circuit and the endurance failure of catenary.
The contact system that relates to of the embodiment of the invention comprises 2-4 bar screw-shaped preformed armor rods sheet with preformed insulation protection bar as shown in Figure 3, and the central authorities of two described preformed armor rods sheets are intertwined.
As shown in Figure 1, every preformed armor rods sheet is comprised of some one metal wires, and every one metal wire all is prefabricated into spiral fashion lines consistent in shape and size, and metal filament can adopt the materials such as welding wire, galvanized steel wire or Cu-Mg alloy wire.The preformed armor rods sheet is outer by the good heat-shrink tube parcel of insulativity.
Sparring is wound in outside the catenary, and the internal diameter of sparring is less than the external diameter of catenary, and the internal diameter of sparring is 0.80～0.90 times of catenary external diameter.
The preformed insulation protection bar that installs as shown in Figure 2.During installation, preformed insulation protection bar is installed in the catenary infall, and preformed insulation protection bar has also strengthened the rigidity of catenary when having played the insulation protection effect, effectively avoid the endurance failure of catenary.
As can be seen from the above-described embodiment, the preformed insulation protection bar of the embodiment of the invention has effectively played the insulation protection effect, has strengthened its anti-fatigue performance, avoids the endurance failure of catenary; In addition, preformed armor rods structure, installation process need not the increase instrument, and sparring is free-hand can finish installation, and fitting operation is simple and efficient.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (6)
1. a contact system is characterized in that with preformed insulation protection bar, and described sparring comprises 2～4 preformed insulation protection sheets of screw-shaped.
2. preformed insulation protection bar as claimed in claim 1 is characterized in that, every described preformed insulation protection sheet is comprised of some one metal wires, and metal filament adheres to insulating protective layer outward.
3. preformed insulation protection bar as claimed in claim 2 is characterized in that, described metal filament adopts welding wire, galvanized steel wire or aluminum cald steel wire etc.
4. preformed insulation protection bar as claimed in claim 3 is characterized in that, every one metal wire all is prefabricated into spiral fashion lines consistent in shape and size.
5. preformed insulation protection bar as claimed in claim 1 is characterized in that described sparring is wound in outside the wire;
6. preformed insulation protection bar as claimed in claim 1 is characterized in that, the inner diameter d 1 of described sparring is 0.85～0.95 times of wire diameter D1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102011238A CN102887083A (en) | 2011-07-19 | 2011-07-19 | Pre-twisted insulated protective strip for contact system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102011238A CN102887083A (en) | 2011-07-19 | 2011-07-19 | Pre-twisted insulated protective strip for contact system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102887083A true CN102887083A (en) | 2013-01-23 |
Family
ID=47530835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102011238A Pending CN102887083A (en) | 2011-07-19 | 2011-07-19 | Pre-twisted insulated protective strip for contact system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102887083A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4598180A (en) * | 1981-01-09 | 1986-07-01 | Bicc Public Limited Company | Overhead electric traction systems |
| JP2000238558A (en) * | 1999-02-22 | 2000-09-05 | Sanwa Tekki Corp | Voltage detecting and grounding unit |
| CN2667753Y (en) * | 2003-11-28 | 2004-12-29 | 马辉 | Pretwisting binding wire used between distribution line conducting wire and insulator |
| CN2720692Y (en) * | 2004-06-08 | 2005-08-24 | 石爱民 | Top-twisted wire-clip |
| CN2831561Y (en) * | 2005-10-14 | 2006-10-25 | 北京帕尔普线路器材有限公司 | Suspension wire clips for high temp wire |
| CN2936833Y (en) * | 2006-08-29 | 2007-08-22 | 咸阳西北橡胶制品供销有限公司 | Open tube type carrier cable insulating protection sleeve |
| CN201015962Y (en) * | 2007-02-28 | 2008-02-06 | 北京帕尔普线路器材有限公司 | Strain clamp for cuprum and copper alloy wires cross |
-
2011
- 2011-07-19 CN CN2011102011238A patent/CN102887083A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4598180A (en) * | 1981-01-09 | 1986-07-01 | Bicc Public Limited Company | Overhead electric traction systems |
| JP2000238558A (en) * | 1999-02-22 | 2000-09-05 | Sanwa Tekki Corp | Voltage detecting and grounding unit |
| CN2667753Y (en) * | 2003-11-28 | 2004-12-29 | 马辉 | Pretwisting binding wire used between distribution line conducting wire and insulator |
| CN2720692Y (en) * | 2004-06-08 | 2005-08-24 | 石爱民 | Top-twisted wire-clip |
| CN2831561Y (en) * | 2005-10-14 | 2006-10-25 | 北京帕尔普线路器材有限公司 | Suspension wire clips for high temp wire |
| CN2936833Y (en) * | 2006-08-29 | 2007-08-22 | 咸阳西北橡胶制品供销有限公司 | Open tube type carrier cable insulating protection sleeve |
| CN201015962Y (en) * | 2007-02-28 | 2008-02-06 | 北京帕尔普线路器材有限公司 | Strain clamp for cuprum and copper alloy wires cross |
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Application publication date: 20130123 |