CN202294344U - Earthing terminal of rigid suspension of catenary of metro shield section - Google Patents
Earthing terminal of rigid suspension of catenary of metro shield section Download PDFInfo
- Publication number
- CN202294344U CN202294344U CN2011203578119U CN201120357811U CN202294344U CN 202294344 U CN202294344 U CN 202294344U CN 2011203578119 U CN2011203578119 U CN 2011203578119U CN 201120357811 U CN201120357811 U CN 201120357811U CN 202294344 U CN202294344 U CN 202294344U
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- China
- Prior art keywords
- earthing terminal
- terminal base
- base body
- earthing
- catenary
- Prior art date
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Abstract
The utility model discloses an earthing terminal of a rigid suspension of a catenary of a metro shield section. An earthing terminal base body is provided with a straight plate structure. When the earthing terminal is mounted and used, one end of the earthing terminal base body is fixedly connected with a contact suspension anchor bolt, and the other end of the earthing terminal base body is horizontally connected with a copper wiring terminal 3. Through optimizing the structure of the earthing terminal base and changing the connection manner of the copper wiring terminal 3, the construction difficult problem caused by special shape of the earthing terminal is solved without adding any other fittings. By adopting the earthing terminal base of the earthing terminal, mounting fittings and the use amount of overhead ground wire leads are reduced, so that the cost is saved; and the earthing terminal is convenient to mount, so that the construction efficiency is greatly improved and safe and reliable operation of the catenary is guaranteed.
Description
Technical field
The utility model relates to the rigid suspended earth terminal of a kind of metro shield section contact system.
Background technology
The general direct current 1500V of employing of metro traction power supply or two kinds of voltage classs of direct current 750V are supplied power; In DC supply, can form the stray current on road along the line; Subway metal pipe line along the line there are very big corrosion and destruction, so in subway, an aerial earth wire that connects all fronts can be installed, when the electric current on the contact system passes through the suspension base to tunnel structure reinforcing bar or other metal pipe line earial drainage; Electric current can be in time through the rapid earial drainage of aerial earth wire; Significantly reduce corrosion, protected tunnel structure and metal pipe line on every side, so aerial earth wire is extremely important for the safe operation of subway metal pipe line around reinforcing bar in the tunnel and the subway.
The rigid suspended base of subway contact system must reliably be connected with aerial earth wire with the aerial earth wire lead-in wire through earth terminal; And include subway integrated ground system in; Contact system just has place suspension locating point for rigid suspended about 8 meters; Therefore the earth terminal erection work is very big, the earth terminal mounting means: directly the connection terminal base is installed on the contact suspension crab-bolt through fastener, supports copper tip and the effect that is connected aerial earth wire thereby play.
Earthing terminal structure is complicated at present, and at the bottom of the metro shield section headroom, what the aerial earth wire lead-in wire used is hard drawn copper strand wire; Crooked difficulty in the construction and installation process, difficulty of construction is big, is difficult to guarantee construction quality; Can increase aerial earth wire lead-in wire consumption simultaneously, and very inconvenient for later operation maintenance.
Summary of the invention
The purpose of the utility model is: to the problem of above-mentioned existence, the rigid suspended earth terminal of metro shield section contact system that provide a kind of easy for installation, safe and reliable, is connected firmly.
The technical scheme that the utility model adopts is to change connection terminal base body into straight plate structure, particularly on body, has mounting hole, in use, base body one end and contact suspension crab-bolt is connected, and the other end and copper tip are directly fixing to get final product.Greatly facilitate construction and installation, and install firmly, installation effectiveness is high.
Said connection terminal mounting seat body adopts structural carbon steel Q235A material, through the material optimization to product, makes its intensity better, better guarantees product design.
Further improving is that connection terminal base body surface has preservative coat.Make product have withstanding corrosion, freedom from repairs, long service life, stay-in-grade characteristics.
Description of drawings
The utility model will describe through embodiment and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is that the suitable line direction connection terminal base and the copper tip of prior art installed view.
Fig. 2 is Fig. 1 A portion enlarged diagram.
Fig. 3 is a connection terminal understructure scheme drawing of the prior art.
Fig. 4 is that suitable line direction connection terminal base and the copper tip of the utility model embodiment installed view.
Fig. 5 is Fig. 4 A ' portion enlarged diagram.
Fig. 6 is the connection terminal base body birds-eye view of the utility model embodiment.
Fig. 7 is the connection terminal base base side view of the utility model embodiment.
The specific embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
As shown in Figure 1; For the connection terminal base and the copper tip of prior art are installed view; Fig. 2 is the suitable line direction earth terminal enlarged drawing of prior art, and earth terminal base wherein is as shown in Figure 3, and connection terminal base body 2 has the folding surface of one 90 degree.Connection terminal base body 2 one ends through two nuts with body-fixed on contact suspension crab-bolt 1; Then copper tip 3 directly is fixed on the other end folding surface of body; Curve and connect aerial earth wire 5 and be connected to the circuit outside when aerial earth wire lead-in wire 4 runs into shield structure wall straight up; When contact system passes through insulator arc-over; Overwhelming majority leakage current can reduce leakage current and stray current to shield structure section structure reinforcing bar and the corrosion of metal pipe line on every side in time along the aerial earth wire current drainage.Because copper tip and contact suspension crab-bolt distance are little, in the construction copper tip is connected very inconvenience with the connection terminal base, and difficulty of construction is big in the prior art; Be difficult to guarantee reliable the connection, because the shield tunnel headroom is lower, connection terminal base and tunnel top distance are little; The aerial earth wire lead-in wire just comes out just to begin to turn round from copper tip in the construction, and the aerial earth wire lead-in wire is thicker hard drawn copper strand wire, and hardness is big; The difficulty of turning round, construction are accomplished back aerial earth wire lead-in wire and are prone to rub with tunnel wall, add when locomotive passes through hitch point the shock effect to entire bracket; Cause part aerial earth wire serious wear, be difficult to play the effect of protection.
Fig. 6,7 is this stereogram of connection terminal base of the utility model embodiment.Connection terminal base body 2 is straight plate structure; Adopt structural carbon steel Q235A material to process; Body surface is coated with preservative coat, also has two mounting holes above it, and size is respectively Φ 22 and Φ 18; Macropore directly is fixed on the contact suspension crab-bolt through fastener, and aperture connects copper tip.
Like Fig. 4, shown in 5, for connection terminal base and the copper tip of the utility model embodiment view is installed, base body 2 directly is fixed on the contact suspension crab-bolt 1 through two nuts in construction, and the other end is connected with copper tip 3 levels.With prior art relatively, the optimization through the pair of wire connection terminals understructure and with the change of copper tip 3 connection modes, need not to increase other any accessory; Solved because of the existing special construction difficult problem that causes of earth terminal shape, because aerial earth wire lead-in wire 4 need not bend, direct connection is connecting on the aerial earth wire 5; Reduced aerial earth wire lead-in wire use amount; Reduced a nut and two ground wire clips simultaneously, practiced thrift cost, because easy for installation; Improve operating efficiency greatly, guaranteed the operation that contact system is safe and reliable.
The above is merely the preferred embodiment of the utility model, any modification of being done within all spirit and principles at the utility model, is equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (4)
1. rigid suspended earth terminal of metro shield section contact system, it is characterized in that: said connection terminal base body is straight plate structure.
2. the rigid suspended earth terminal of metro shield section contact system as claimed in claim 1 is characterized in that: have mounting hole on the connection terminal base body.
3. the rigid suspended earth terminal of metro shield section contact system as claimed in claim 1 is characterized in that: connection terminal base body is a structural carbon steel Q235A material.
4. the rigid suspended earth terminal of metro shield section contact system as claimed in claim 1, it is characterized in that: connection terminal base body is coated with preservative coat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203578119U CN202294344U (en) | 2011-09-22 | 2011-09-22 | Earthing terminal of rigid suspension of catenary of metro shield section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203578119U CN202294344U (en) | 2011-09-22 | 2011-09-22 | Earthing terminal of rigid suspension of catenary of metro shield section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202294344U true CN202294344U (en) | 2012-07-04 |
Family
ID=46363303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203578119U Expired - Fee Related CN202294344U (en) | 2011-09-22 | 2011-09-22 | Earthing terminal of rigid suspension of catenary of metro shield section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202294344U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106585427A (en) * | 2016-11-11 | 2017-04-26 | 中铁十二局集团有限公司 | Trackless construction method for subway rigid catenary system |
-
2011
- 2011-09-22 CN CN2011203578119U patent/CN202294344U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106585427A (en) * | 2016-11-11 | 2017-04-26 | 中铁十二局集团有限公司 | Trackless construction method for subway rigid catenary system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA RAILWAY ELECTRIFICATION BUREAU GROUP 5TH ENG Free format text: FORMER NAME: CHINA RAILWAY ELECTRIFICATION BUREAU (GROUP) 5TH ENGINEERING CORPORATION |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 610031 Sichuan Province, Chengdu city Qingyang District Qingyang Industrial Development Zone (East) Guang Fu Road No. 8 Building 10, No. 406 (headquarters base in C District No. 34 4-6) Patentee after: CHINA RAILWAY ELECTRIFICATION BUREAU (GROUP) 5TH ENGINEERING CORPORATION Address before: 610031 Sichuan Province, Chengdu city Qingyang District Qingyang Industrial Development Zone (East) Guang Fu Road No. 8 Building 10, No. 406 (headquarters base in C District No. 34 4-6) Patentee before: China Railway Electrification Bureau (Group) 5th Engineering Corporation |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20140922 |
|
| EXPY | Termination of patent right or utility model |