CN220914597U - Anti-fracture ground wire of metro vehicle - Google Patents
Anti-fracture ground wire of metro vehicle Download PDFInfo
- Publication number
- CN220914597U CN220914597U CN202322637787.XU CN202322637787U CN220914597U CN 220914597 U CN220914597 U CN 220914597U CN 202322637787 U CN202322637787 U CN 202322637787U CN 220914597 U CN220914597 U CN 220914597U
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- China
- Prior art keywords
- composite cable
- terminal
- crimping terminal
- metro vehicle
- crimping
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- 230000002968 anti-fracture Effects 0.000 title abstract description 8
- 239000002131 composite material Substances 0.000 claims abstract description 31
- 238000002788 crimping Methods 0.000 claims abstract description 30
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 21
- 238000005260 corrosion Methods 0.000 claims abstract description 13
- 230000006835 compression Effects 0.000 claims abstract description 10
- 238000007906 compression Methods 0.000 claims abstract description 10
- 239000000565 sealant Substances 0.000 claims abstract description 10
- 239000004945 silicone rubber Substances 0.000 claims description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 10
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 238000009833 condensation Methods 0.000 abstract description 2
- 230000005494 condensation Effects 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 description 5
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000004073 vulcanization Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- Cable Accessories (AREA)
Abstract
The utility model belongs to the technical field of rail transit transportation safety, and particularly relates to an anti-fracture grounding wire for a metro vehicle, which comprises a composite cable, a first crimping terminal and a second crimping terminal, wherein the first crimping terminal and the second crimping terminal are arranged at two ends of the composite cable, anti-corrosion sealant is coated at the joint of the first crimping terminal and the composite cable, a silicon rubber cold shrink sheath is wrapped on the composite cable, and the end part of the silicon rubber cold shrink sheath covers the joint of the first crimping terminal, the second crimping terminal and the composite cable. According to the utility model, the first compression joint terminal, the second compression joint terminal, the silicon rubber cold shrink sheath and the anti-corrosion sealant are arranged, the mechanical performance is fundamentally improved by improving the material technology and design, the measures of developing new materials, optimizing the design parameters of the grounding wire and the like are adopted, the resonance frequency is avoided, the design is reasonable, the use is convenient, and the anti-corrosion sealant can effectively solve the problems of condensation of the grounding wire, corrosion caused by humidity and temperature change caused by the operation of a metro vehicle.
Description
Technical Field
The utility model relates to the technical field of rail transit transportation safety, in particular to an anti-fracture grounding wire for a metro vehicle.
Background
At present, a ground wire of a subway vehicle is arranged between a bogie frame and a shaft end, is limited by space, and is unreasonable in fixed length and angle installation. The phenomenon of breakage caused by short strands of the pressing points of the lead and the two wiring terminals easily occurs, and the safe and reliable operation of the metro vehicle is affected.
The ground wire for a metro vehicle is a metal conductive part for connecting a ground terminal of an electric device or facility to a ground electrode. The grounding wire can be divided into a protection grounding wire, a working grounding wire and a shielding grounding wire according to the action. When a short circuit occurs, the electric equipment shell is electrified and is grounded through the grounding wire, so that the current flowing through the human body is smaller than the current bearable by the human body when a maintainer operates the equipment and passengers sit, and the resistance of the grounding wire is required to be satisfied. The remarkable characteristics are that; the copper and stainless steel materials are adopted, and the flame-retardant fireproof cable has the characteristics of high mechanical strength, flame retardance, fire resistance, low smoke, no halogen, high and low temperature resistance, corrosion resistance and low resistance.
The grounding wire is used as an important part of the metro vehicle, has a simple structure, performs multiple functions, and has to be strictly required in the process of design, production and overhaul, otherwise immeasurable loss can be caused.
The prior art has the following problems:
At present, a ground wire of a metro vehicle is arranged between a bogie frame and a shaft end, is limited by space, is unreasonable in fixed length and angle installation, and is easy to break due to the fact that a lead wire and two terminal pressing points are short in strands, so that safe and reliable operation of the metro vehicle is affected.
Disclosure of utility model
Aiming at the defects of the prior art, the utility model provides an anti-fracture grounding wire for a metro vehicle, which solves the problems that the existing metro vehicle grounding wire is arranged between a bogie frame and a shaft end, is limited by space, is unreasonable in fixed length and angle installation, is easy to cause fracture phenomenon caused by short strands of a wire and two terminal pressing points, and affects the safe and reliable operation of the metro vehicle.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a railcar prevents ground connection that splits, includes compound cable, sets up in the crimping terminal and No. two crimping terminals of compound cable both ends, no. one crimping terminal and No. two crimping terminals have anticorrosive sealant with the junction coating of compound cable, compound cable parcel has silicone rubber shrinkage sheath, the tip of silicone rubber shrinkage sheath covers the junction of crimping terminal, no. two crimping terminals and compound cable.
As a preferable technical scheme of the utility model, the composite cable is a copper wire stainless steel wire composite cable, and the surface of the copper wire is plated with tin.
As a preferable technical scheme of the utility model, the first crimp terminal and the second crimp terminal are integrally crimped and fixed with the end part of the composite cable.
As a preferable technical scheme of the utility model, the composite cable, the first crimping terminal and the second crimping terminal are integrally wrapped through the silicone rubber cold-shrink sheath.
As a preferable technical scheme of the utility model, the length of the composite cable is equal to the length required by the installation of the ground wire of the metro vehicle.
As a preferable technical scheme of the utility model, the silicone rubber cold-shrink sheath is formed by injection vulcanization molding of elastomer materials of silicone rubber and ethylene propylene rubber, and then expanding and lining with a plastic spiral support.
Compared with the prior art, the utility model provides the anti-fracture grounding wire for the metro vehicle, which has the following beneficial effects:
According to the anti-fracture grounding wire for the metro vehicle, the first compression joint terminal, the second compression joint terminal, the silicon rubber cold shrink sheath and the anti-corrosion sealant are arranged, mechanical properties are fundamentally improved through improvement of material technology and design, measures of developing new materials, optimizing design parameters of the grounding wire and the like are taken, and meanwhile resonance frequency is avoided. The anti-corrosion sealant is reasonable in design, convenient to use and capable of effectively solving the problems of condensation of the ground wire, corrosion caused by humidity and temperature change caused by operation of a metro vehicle.
The grounding wire has the following mechanical characteristic advantages:
1) The plurality of small-diameter single wires are stranded, and the flexibility is good.
2) Each single line is alternately arranged in an extension area and a compression area at the upper part of the twisted line, and the extension force and the compression force are equal, so that the stability is strong.
3) When the sectional area is larger, the single wire is defective due to the manufacturing process or external force, the mechanical strength cannot be ensured, and the probability of defect occurrence of the stranded wires at the same position is smaller. Relatively, mechanical strength is great.
4) The copper core fine wire tinned wire and the stainless steel wire form a novel composite cable, the novel composite cable is coated with anti-corrosion sealant through the silicon rubber cold-shrink sheath, and the novel composite cable adopts a multi-strand soft copper wire structure, so that the flexibility of the grounding wire is improved, the bending radius is small, and the installation of the grounding wire is facilitated.
Drawings
FIG. 1 is a schematic diagram of a cross-sectional structure of an anti-fracture ground wire of a metro vehicle;
Fig. 2 is a schematic diagram of an anti-breakage grounding wire structure of a metro vehicle.
In the figure: 1. a composite cable; 2. a first crimp terminal; 3. a second crimp terminal; 4. a silicone rubber cold shrink sheath; 5. anti-corrosion sealant.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-2, in this embodiment: the utility model provides a ground connection that breaks is prevented to railcar, includes compound cable 1, sets up crimping terminal 2 and crimping terminal 3 No. two in compound cable 1 both ends. The joint of the first crimping terminal 2 and the second crimping terminal 3 and the composite cable 1 is coated with anti-corrosion sealant 5, the composite cable 1 is wrapped with a silicone rubber cold shrink sheath 4, and the end part of the silicone rubber cold shrink sheath 4 covers the joint of the first crimping terminal 2 and the second crimping terminal 3 and the composite cable 1.
In the embodiment, the composite cable 1 is a copper wire stainless steel wire composite cable, and the surface of the copper wire is plated with tin, so that the rust-proof protection effect of the cable is improved. The first crimp terminal 2 and the second crimp terminal 3 are crimped and fixed with the end part of the composite cable 1 into a whole by using the crimp tool according to the technological process, and the structural design is reasonable. The composite cable 1, the first crimping terminal 2 and the second crimping terminal 3 are wrapped into a whole through the silicone rubber cold-shrink sheath 4, and the protection effect is good. The length of the composite cable 1 is equal to the length required by the installation of the ground wire of the metro vehicle, and the design is reasonable. The silicone rubber cold shrink sheath 4 is formed by injection vulcanization molding of elastomer materials of silicone rubber and ethylene propylene rubber, and is formed by expanding and lining with a plastic spiral support, and the mechanical performance is fundamentally improved by improving the material technology and design.
The working principle and the using flow of the utility model are as follows: the silicone rubber cold shrink sheath 4 is formed by injection vulcanization molding of elastomer materials silicone rubber and ethylene propylene rubber, and is further subjected to diameter expansion and lining with a plastic spiral support to form various cable accessory parts. When in field installation, the pre-expansion pieces are sleeved at the tail end or joint of the treated cable, the plastic spiral strips (supporting objects) supported inside are drawn out, and the plastic spiral strips are pressed on the subway grounding wire to form the grounding wire protection layer. Because it is under normal temperature by elastic retractive force, it has good mechanical property and good electric property and vibration-resisting property and good corrosion-resisting property. So that the heat resistance of the alloy is obviously improved, and the long-term working temperature can reach 125 ℃. The installation can be normally carried out at the temperature of-40 ℃, and the problems that polar materials such as PVC, CSM and the like are easy to harden, crack and the like due to low-temperature laying can be solved, so that the use in colder areas is satisfied.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (5)
1. The utility model provides a ground connection that breaks is prevented to railcar, includes compound cable (1), sets up in crimping terminal (2) and No. two crimping terminals (3) at compound cable (1) both ends, its characterized in that: the anti-corrosion composite cable is characterized in that the joint of the first compression joint terminal (2) and the second compression joint terminal (3) and the composite cable (1) is coated with anti-corrosion sealant (5), the composite cable (1) is wrapped with a silicone rubber cold-shrink sheath (4), and the end part of the silicone rubber cold-shrink sheath (4) covers the joint of the first compression joint terminal (2), the second compression joint terminal (3) and the composite cable (1).
2. The metro vehicle breakage-proof ground line of claim 1, wherein: the composite cable (1) is a copper wire stainless steel wire composite cable, and the surface of the copper wire is plated with tin.
3. The metro vehicle breakage-proof ground line of claim 1, wherein: the first crimping terminal (2) and the second crimping terminal (3) are fixedly connected with the end part of the composite cable (1) in a crimping way.
4. The metro vehicle breakage-proof ground line of claim 1, wherein: the composite cable (1), the first crimping terminal (2) and the second crimping terminal (3) are wrapped through the silicone rubber cold-shrink sheath (4) to form a whole.
5. The metro vehicle breakage-proof ground line of claim 1, wherein: the length of the composite cable (1) is equal to the length required by the installation of the ground wire of the metro vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322637787.XU CN220914597U (en) | 2023-09-26 | 2023-09-26 | Anti-fracture ground wire of metro vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322637787.XU CN220914597U (en) | 2023-09-26 | 2023-09-26 | Anti-fracture ground wire of metro vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220914597U true CN220914597U (en) | 2024-05-07 |
Family
ID=90908781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322637787.XU Active CN220914597U (en) | 2023-09-26 | 2023-09-26 | Anti-fracture ground wire of metro vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220914597U (en) |
-
2023
- 2023-09-26 CN CN202322637787.XU patent/CN220914597U/en active Active
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| GR01 | Patent grant |