CN202816768U - Grounding knife of track traffic grounding device - Google Patents
Grounding knife of track traffic grounding device Download PDFInfo
- Publication number
- CN202816768U CN202816768U CN 201220508986 CN201220508986U CN202816768U CN 202816768 U CN202816768 U CN 202816768U CN 201220508986 CN201220508986 CN 201220508986 CN 201220508986 U CN201220508986 U CN 201220508986U CN 202816768 U CN202816768 U CN 202816768U
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- knife
- fixed
- track traffic
- contact arm
- rotating shaft
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Abstract
A grounding knife of a track traffic grounding device belongs to a grounding mechanism for maintenance grounding and fault repairing grounding of a track traffic direct current power supply system. A movable contact knife is fixed on an insulated rotating shaft. A copper wire is connected between the movable contact knife and a conductive plate. The conductive plate is fixed on two insulators. A static contact knife is formed by fixing a plurality of concave-shaped copper sheets. The static contact knife is fixed on an upper portion of a static contact arm. The static contact arm is a right angle copper plate member, and a vertical portion of the static contact arm is flatly bended to form an acute angle. The static contact arm is fixed on other two insulators. The static contact arm and the conductive plate are respectively connected with a contact rail and a running rail of the track traffic through cables. The grounding knife of the track traffic grounding device has the characteristics of simple and compact structure, high mechanical strength, long service life, and reliable grounding.
Description
Technical field
The utility model relates to the track traffic earthing device, is the earthing mechanism for rated voltage DC1800V and DC750V orbit traffic direct current electric power system inspection earthing and breakdown repair ground connection specifically.
Background technology
Urban track traffic electric power system along the line and other system of being associated are when normally overhauling with breakdown repair, in order to ensure operating personnel's life safety, the present internal and international mode that generally adopts artificial hanging earthing conductor, namely except the power supply zone to maintenance has a power failure operation, also need manually by following program conductor rail (positive pole) to be carried out artificial hanging earthing conductor operation to the power supply zone pit foundation is on-the-spot:
Galvanoscopic earth connection is connected with rail (negative pole) → with the electroscope positive pole touch conductor rail (positive pole) carry out electrical verification → affirmation conductor rail without electricity after → end of earth connection is connected with rail → other end of earth connection is connected with conductor rail.
And power failure, electrical verification and the hanging earthing conductor of finishing a power supply zone generally need 60～80 minutes, so the long time, particularly when accident maintenance, directly have influence on the recovery of efficient and the normal operation order of repairing.
The artificial hanging earthing conductor here is exactly to the track pit foundation is manual the earth clip clamp to be connected on the metal track under the operator.
The utility model content
The purpose of this utility model provides a kind of compact conformation, space hold is little, mechanical strength is large, the reliable track traffic earthing device of orbit traffic direct current system electrical ground connection earthing.
This novel purpose is achieved in that a kind of track traffic earthing device earthing, and quiescent contacting knife is fixed as one through rivet by polylith concave shape copper sheet, and has when closing a floodgate on the quiescent contacting knife and the arc convex of described movable touch knife crimping; The stationary contact arm is that a bar shaped plate is bent to form: by the identical horizontal segment of width, section and three stripe board tandem arrays of ramp up section form straight up, and ramp up section and straight up section the two stripe board is coplanar; Described quiescent contacting knife is fixed on through screw on two sides at ramp up section stripe board top of stationary contact arm; The horizontal segment of stationary contact arm is fixed on two insulators through screw; Described movable touch knife is fixed on insulation rotating shaft one end through screw, the insulation rotating shaft other end is connected with motor-driven mechanism, conductive plate is fixed on other two insulators, and the end that is flexible coupling that is comprised of copper stranded conductor is fixed on the movable touch knife, and the other end is fixed on the conductive plate through screw; Above-mentioned two insulators and other two insulators all are fixed on the earthing device base plate; Above-mentioned stationary contact arm is connected with the contact track of track traffic through cable, and conductive plate is connected with the walking rails of track traffic through another cable.
Be fixed with the rotating shaft flange through screw on the described insulation rotating shaft other end.
The ramp up section of described stationary contact arm is 30 ° with intersegmental angle straight up.
Square hole on the described movable touch knife is enclosed within on the square shaft of insulation rotating shaft one end, screws in the square shaft of insulation rotating shaft and crimping is fixed through screw again.
Be coated with silver coating on described movable touch knife and the quiescent contacting knife.
Described insulation rotating shaft is epoxy resin poured body, is embedded with 1 M10 annular knurl copper nut on the end face of this pour mass,, be embedded with 4 M5 knurled metal nuts on another end face of this pour mass.
This earthing is a kind of brand-new electric grounding device in order to alternative artificial hanging earthing conductor, and it can remote electric operation, also on the spot electric operating and on the spot manual operation.
Earthing is the vitals of JN-15 earthing device, and when repairing and maintenance, it is electrically connected reliably according to conductor rail (positive pole) and the rail (negative pole) of instruction with track traffic.
This earthing and complete machine have passed through prototype tests in May, 2012, test certificate number: NO:2012-892A-1.
Compared with prior art, this novel beneficial effect is:
1, hanging earthing conductor and dismounting earth connection adopt the disconnecting link formula electric closing-opening of monolithic disconnecting link formula movable touch knife and multi-disc duck-beak type (being the open front formula) quiescent contacting knife to operate to finish, and do not need the operator to go manual operations to the track pit foundation down again.
2, movable touch knife be installed in the insulation rotating shaft on, conductive plate is installed on the insulator, make movable touch knife, be flexible coupling and conductive plate with and the operating mechanism metal shell all be in state of insulation.Like this, after grounded circuit is disconnected (after being separating brake), the cable that accesses conductive plate from rail does not need to remove.
3, the stationary contact arm is installed on the insulator, makes quiescent contacting knife, stationary contact arm all be in state of insulation with ground and operating mechanism metal shell.Like this, after grounded circuit is disconnected (after being separating brake), the cable that accesses the stationary contact arm from conductor rail does not need to remove.
4, movable touch knife and quiescent contacting knife are when open position, and the industrial frequency withstand voltage of fracture satisfies the 11kV/1min requirement between the two, and both satisfy the 9.2kV/1min requirement by industrial frequency withstand voltage over the ground, and at this moment, the power supply zone that is overhauled can normally send electricity.After sending electricity, movable touch knife and rail be with electronegative, the same positively charged of quiescent contacting knife and conductor rail.
5, overall structure is simply compact, especially the stationary contact arm adopts whole stripe board to bend formation, and ramp up section is crooked along the vertical direction of stripe board thickness, compares with the vertical direction bending along the stripe board surface, mechanical strength improves greatly, and capacity of resisting impact load promotes greatly.
6, can guarantee the urban transportation reliable electrical grounding, and easy and simple to handle.
7, in frequent switching situation, this earthing has longer useful life; Quiescent contacting knife (consumable accessory) adopts demountable structure, is convenient for changing.
Description of drawings
Fig. 1, Fig. 2 are respectively front view and the left views of this device (being gate-dividing state).
Fig. 3 is the front view of stationary contact arm shown in Figure 1.
Fig. 4 is that Fig. 3 is along the cutaway view of B-B line.
Fig. 5 is the right view of Fig. 3.
Fig. 6 is that the A on stationary contact arm shown in Figure 5 top is to view.
Fig. 7, Fig. 8, Fig. 9 are respectively front view, upward view and the vertical views of insulation rotating shaft shown in Figure 1.
Figure 10, Figure 11 are respectively front view and the right views of quiescent contacting knife shown in Figure 2.
Figure 12, Figure 13 are respectively front view and the vertical views of movable touch knife shown in Figure 2.
Embodiment
Fig. 1, Fig. 2 illustrate, track traffic earthing device earthing, and quiescent contacting knife is fixed as one through rivet by polylith concave shape copper sheet, and has when closing a floodgate on the quiescent contacting knife and the arc convex of described movable touch knife 101 crimping; Stationary contact arm 106 is that a bar shaped plate is bent to form: by the identical horizontal segment of width, section and three stripe board tandem arrays of ramp up section form straight up, and ramp up section and straight up section the two stripe board is coplanar; Described quiescent contacting knife 102 is fixed on through screw on two sides at ramp up section stripe board top of stationary contact arm 106; The horizontal segment of stationary contact arm 106 is fixed on two insulators 108 through screw;
Described movable touch knife 101 is fixed on insulation rotating shaft 103 1 ends through screw, the insulation rotating shaft other end is connected with motor-driven mechanism, conductive plate 105 is fixed on other two insulators 107,104 1 ends that are flexible coupling that are comprised of copper stranded conductor are fixed on the movable touch knife, and the other end is fixed on the conductive plate 105 through screw;
Above-mentioned two insulators 108 and other two insulators 107 all are fixed on the earthing device base plate 8j;
Above-mentioned stationary contact arm 106 is connected with the contact track of track traffic through cable, and conductive plate 105 is connected with the walking rails of track traffic through another cable.
During actual fabrication, stationary contact arm ramp up section and straight up section be not to be bent into, but Whole blanking forms on a flat board.Referring to Fig. 3 Fig. 4 Fig. 5, also can say, after the stationary contact arm extends a height straight up by a horizontal slats, extend to form along curved the bending of the vertical direction of bar plate thickness again.Making on the whole stripe board of stationary contact arm has upper and lower surface, two end faces and two sides (namely along its length plane, thickness place).
The ramp up section of described stationary contact arm 106 is 30 ° with intersegmental angle straight up.Referring to Fig. 7, Fig. 8, be fixed with rotating shaft flange 109 through screw on described insulation rotating shaft 103 other ends; Square hole on the described movable touch knife 101 is enclosed within on the square shaft of insulation rotating shaft 103 1 ends, screws in the square shaft of insulation rotating shaft and crimping is fixed through screw again.
Be coated with silver coating on described movable touch knife 101 and the quiescent contacting knife 102.
Described insulation rotating shaft 103 is epoxy resin poured body, is embedded with 1 M10 annular knurl copper nut on the end face of this pour mass,, be embedded with 4 M5 knurled metal nuts on another end face of this pour mass.
Conductor rail: track traffic is anodal;
Rail: the track traffic negative pole links to each other with grounding system by a current potential stop.
Operation principle: movable touch knife 101 and quiescent contacting knife 102 are set.
Quiescent contacting knife 102(Figure 10, Figure 11) link to each other with stationary contact arm 106, stationary contact arm 106 is fixed on two insulators 108.During on-the-spot the installation, will be crimped on the stationary contact arm 106 from the cable end (bolt) that conductor rail is introduced.
The one side of movable touch knife 101 lower ends is by the 104(copper stranded conductor that is flexible coupling) with the square plate of conductive plate 105(middle part one square hole is arranged) link to each other, conductive plate 105 is fixed on two insulators 107; The another side of movable touch knife 101 lower ends is installed in the insulation rotating shaft 103, and insulation rotating shaft 103 is fixed on the JN-15 earthing device operating mechanism rotating shaft flange 109.During on-the-spot the installation, will be crimped on the conductive plate 105 from the cable end that rail is introduced.
Operation (JN-15) earthing device operating mechanism, driven by motor insulation rotating shaft 103 turns clockwise, and movable touch knife 101 is inserted in the quiescent contacting knife 102, and namely closing a floodgate puts in place, and at this moment, conductor rail and rail are by short circuit, and grounded circuit is switched on; Driven by motor insulation rotating shaft 103 is rotated counterclockwise, and movable touch knife 101 separates with quiescent contacting knife 102, and namely separating brake puts in place, and at this moment, conductor rail and rail are disconnected, and namely grounded circuit is disconnected, and ground connection is disengaged.
Claims (6)
1. track traffic earthing device earthing, comprise that movable touch knife (101), quiescent contacting knife (102) is characterized in that, described quiescent contacting knife is fixed as one through rivet by polylith concave shape copper sheet, and has when closing a floodgate on the quiescent contacting knife and the arc convex of described movable touch knife (101) crimping; Stationary contact arm (106) is that a bar shaped plate is bent to form: by the identical horizontal segment of width, section and three stripe board tandem arrays of ramp up section form straight up, and ramp up section and straight up section the two stripe board is coplanar; Described quiescent contacting knife (102) is fixed on through screw on two sides at ramp up section stripe board top of stationary contact arm (106); The horizontal segment of stationary contact arm (106) is fixed on two insulators (108) through screw;
Described movable touch knife (101) is fixed on insulation rotating shaft (103) one ends through screw, the insulation rotating shaft other end is connected with motor-driven mechanism, conductive plate (105) is fixed on other two insulators (107), (104) one ends that are flexible coupling that are comprised of copper stranded conductor are fixed on the movable touch knife, and the other end is fixed on the conductive plate (105) through screw;
Above-mentioned two insulators (108) and other two insulators (107) all are fixed on the earthing device base plate (108);
Above-mentioned stationary contact arm (106) is connected with the contact track of track traffic through cable, and conductive plate (105) is connected with the walking rails of track traffic through another cable.
2. track traffic earthing device earthing according to claim 1 is characterized in that, is fixed with rotating shaft flange (109) through screw on described insulation rotating shaft (103) other end.
3. track traffic earthing device earthing according to claim 1 and 2 is characterized in that, the ramp up section of described stationary contact arm (106) is 30 ° with intersegmental angle straight up.
4. track traffic earthing device earthing according to claim 3 is characterized in that, the square hole on the described movable touch knife (101) is enclosed within on the square shaft of insulation rotating shaft (103) one ends, screws in the square shaft of insulation rotating shaft and crimping is fixed through screw again.
5. track traffic earthing device earthing according to claim 4 is characterized in that, is coated with silver coating on described movable touch knife (101) and the quiescent contacting knife (102).
6. track traffic earthing device earthing according to claim 5, it is characterized in that, described insulation rotating shaft (103) is epoxy resin poured body, is embedded with 1 M10 annular knurl copper nut on the end face of this pour mass, is embedded with 4 M5 knurled metal nuts on another end face of this pour mass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220508986 CN202816768U (en) | 2012-10-07 | 2012-10-07 | Grounding knife of track traffic grounding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220508986 CN202816768U (en) | 2012-10-07 | 2012-10-07 | Grounding knife of track traffic grounding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202816768U true CN202816768U (en) | 2013-03-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220508986 Expired - Lifetime CN202816768U (en) | 2012-10-07 | 2012-10-07 | Grounding knife of track traffic grounding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202816768U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102856111A (en) * | 2012-10-07 | 2013-01-02 | 成都中工电气工程有限公司 | Grounding cutter of rail traffic grounding device |
| CN104960438A (en) * | 2015-05-28 | 2015-10-07 | 徐州中矿传动轨道科技有限公司 | Visual grounding device for rail traffic |
-
2012
- 2012-10-07 CN CN 201220508986 patent/CN202816768U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102856111A (en) * | 2012-10-07 | 2013-01-02 | 成都中工电气工程有限公司 | Grounding cutter of rail traffic grounding device |
| CN104960438A (en) * | 2015-05-28 | 2015-10-07 | 徐州中矿传动轨道科技有限公司 | Visual grounding device for rail traffic |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |
|
| CX01 | Expiry of patent term |