CN113352953A - Cross cable isolating device for contact network - Google Patents
Cross cable isolating device for contact network Download PDFInfo
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- CN113352953A CN113352953A CN202110737746.0A CN202110737746A CN113352953A CN 113352953 A CN113352953 A CN 113352953A CN 202110737746 A CN202110737746 A CN 202110737746A CN 113352953 A CN113352953 A CN 113352953A
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- pressing plate
- cable
- cross
- sliding
- cables
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
- B60M1/12—Trolley lines; Accessories therefor
- B60M1/20—Arrangements for supporting or suspending trolley wires, e.g. from buildings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Installation Of Indoor Wiring (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention discloses a contact net crossed cable isolating device which comprises two sleeve rods, a first pressing plate and a second pressing plate, wherein the sleeve rods are arranged in a crossed mode, sliding grooves parallel to the length direction of the sleeve rods and installation grooves used for installing cables are respectively formed in two side edges of the sleeve rods, pulley structures are installed in the sliding grooves, the two sleeve rods are connected in a sliding mode through the pulley structures, the first pressing plate is connected with the second pressing plate through bolts, through holes matched with the cables are formed in the connecting positions of the first pressing plate and the second pressing plate, the first pressing plate is fixedly installed at the end ends of the sleeve rods, and the first pressing plates of the two sleeve rods are connected through equipotential cables. The invention has the advantages of simple structure, effective prevention of abrasion due to sliding of the cable, and convenient use and inspection.
Description
Technical Field
The invention relates to the field of railway engineering, in particular to a contact net cross cable isolating device.
Background
The carrier cable is a main bearing part in contact suspension, and mainly has the functions of fixing the contact line at a designed height and controlling the sag and the smoothness of the contact line through the hanger to ensure the current taking quality of the pantograph. Meanwhile, the carrier cable bears considerable tension, has the characteristics of good conductivity, fatigue resistance and corrosion resistance, and is also a key part which is easy to break down. The quality of the catenary directly influences the operation safety of the contact net, once the catenary is disconnected, the broken end of the catenary can be grounded to cause the contact net to trip, and the sag of the contact line can be greatly changed, so that the current taking of the electric locomotive is seriously influenced. If the disconnected catenary is just wound with a pantograph of a travelling crane, a large-area net collapse accident can even be caused, the line is paralyzed and is not easy to recover in time, if the disconnected catenary is on a high-speed rail, a high-speed rail train can be changed into a steam box due to long power failure time, and the safe production and transportation of the railway are seriously influenced.
Catenary crossing of a contact net is a common technical structure of the contact net. In the 124 th file of the general speed railway contact net operation maintenance rule (total iron transport [ 2017 ] 9) and the 113 th file of the high speed railway contact net operation maintenance rule (total iron transport [ 2015 ] 362), the following regulations are provided for contact net intersection: under the limiting temperature condition, equipotential lines should be additionally arranged at the positions crossing the threads with the pitch less than 200 mm. The equipotential lines and connecting clamps thereof are matched with the material of the connected cable, and the sectional area is not less than 10mm2。
At present, due to the defects of a design structure, a large number of carrier cable crossing conditions exist in running contact network equipment, the distance between carrier cables is less than 200mm, and even serious potential safety hazards such as cross abrasion exist. The method mainly comprises two treatment schemes for the existing hidden danger of carrier cable crossing, wherein 1, a preformed armor rod and an equipotential line are additionally arranged at the carrier cable crossing, and 2, the conditional carrier cable crossing is adjusted.
Wherein the carrier cable cross preformed armor rod and the equipotential line installation requirement are as follows: firstly, the vertical distance between various intersections of a carrier cable and the carrier cable, the carrier cable and a central anchoring auxiliary rope, the carrier cable and a soft crossing fixed rope and the like is not less than 60mm or can generate grinding and collision burning-out positions, and pre-twisted wire protection strips are required to be additionally arranged on the carrier cable and are arranged at least 1 meter towards two sides of the intersection center; secondly, installing equipotential lines according to the requirements of the general speed railway contact network operation and maintenance rules and the high speed railway contact network operation and maintenance rules, wherein the equipotential lines and connecting wire clamps thereof are matched with the materials of connected cables; thirdly, when the equipotential lines are installed, the connection is firm, and the activity of the wires is reserved.
The type of the pre-twisted wire protecting strip is selected, and the A-type pre-twisted armor wire protecting strip can be additionally arranged at the position where the crossed cable possibly has mutual abrasion due to difficult adjustment, so that the carrier cable is prevented from being burnt and abraded.
The current solutions have disadvantages:
1. most of the carrier cable crossing sections are in the station turnout area, the equipment is complex, the adjustment difficulty is high when an adjustment method is adopted, and the crossing positions after adjustment still fail to reach the standard.
2. The adoption installs preformed armor rod additional, only install the one deck protection additional on the criss-cross clue body, can not directly solve the clue and receive the cable slip mutual wearing situation that the temperature influence caused, move by temperature change in the long-term operation, the protection strip wearing and tearing serious still can appear, preformed armor rod can break by wearing when serious, (1) can be to the messenger body fraying, the condition of burn, (2) be difficult for the inspection discovery, think in the subjectivity that to install preformed armor rod additional, the equipotential line just does not have things, will ignore for a long time, the problem of speaking above can reappear.
Disclosure of Invention
Aiming at the problems, the invention provides the overhead line system crossed cable isolating device which has the advantages of simple structure, capability of effectively avoiding cable breakage caused by cable sliding and convenience in use and inspection.
The technical scheme of the invention is as follows:
the utility model provides a contact net cross thread isolating device, includes thread protection structure and fixed knot structure, wherein:
the cable protection structure comprises two sleeve rods which are arranged in a crossed manner, wherein two side edges of each sleeve rod are respectively provided with a sliding groove parallel to the length direction of the sleeve rod and a mounting groove for mounting a cable, a pulley structure is mounted in the sliding groove, and the two sleeve rods are connected in a sliding manner through the pulley structure;
the fixing structure comprises a first pressing plate and a second pressing plate, the first pressing plate is connected with the second pressing plate through bolts, through holes matched with the cables are formed in the joint of the first pressing plate and the second pressing plate, the first pressing plate is fixedly installed at the ends of the two loop bars respectively, and the first pressing plates of the two loop bars are connected through equipotential cables.
The working principle of the technical scheme is as follows:
the loop bars are respectively sleeved on the two crossed cables, the mounting groove of one loop bar is sleeved on the cable above and the chute of the loop bar is downward, the mounting groove of the other loop bar is sleeved on the cable below and the chute of the loop bar is upward, and the chutes of the two loop bars are connected at the intersection of the chutes of the two loop bars in a sliding manner through a pulley structure, so that the pulley structure not only can move horizontally, but also can rotate along with the two crossed loop bars when the two crossed loop bars rotate relatively to release the torque force of the two crossed loop bars; the fixing structures are arranged at two ends of the loop bar, the cable is clamped on the loop bar, and the fixing structures at the corresponding ends of the two loop bars are connected through the equipotential cable, so that the phenomenon of discharging is avoided.
In a further technical scheme, the pulley structure comprises two cross beams and a longitudinal beam, the cross beams and the longitudinal beam form an I-shaped structure, the cross beams are rotatably connected with the longitudinal beam, the cross beams are provided with universal wheels used for sliding, and the universal wheels of the cross beams are respectively arranged in the sliding grooves of the two loop bars.
The crossbeam can wind the axle center rotation of longeron, when the criss-cross clue changes because of temperature changes, its length of expend with heat and contract with cold changes, through the mutual displacement of the criss-cross clue of universal wheel among the pulley structure, the crossbeam of rotating the connection simultaneously also can effectually release the moment of torsion power that produces when the clue displacement, when the length of clue does not change, because the clue is the state of tightening can effectively guarantee that the pulley structure can not slide at will.
In a further technical scheme, threaded holes are formed in four corners of the first pressing plate and four corners of the second pressing plate, and arc-shaped grooves matched with the first pressing plate and the second pressing plate are formed in the surfaces of the first pressing plate and the second pressing plate.
This arc wall with the cross section of mounting groove is the same and mutually support, the arc wall setting of first clamp plate is on the upper surface, and the arc wall setting of second clamp plate is on the lower surface, and the upper surface of first arc wall and the lower surface coincidence of second arc wall, and the junction of two coincidence faces, two arc wall formation one with the parallel through-hole of mounting groove length direction, the diameter of this through-hole is the same with the diameter of clue, guarantees that the clue is fixed on the loop bar.
In a further technical scheme, a mounting seat is arranged on the side face of the first pressing plate, and the mounting seat is matched with the sliding groove and connected with the loop bar through a bolt.
The mounting seat is inserted into the sliding groove, and is connected to the loop bar through a bolt.
The invention has the beneficial effects that:
1. the cable wires are respectively arranged in the two loop bars and are not in contact with each other and are not abraded, so that the service life of the bearing cable wire is prolonged;
2. the torque force generated by cable displacement can be effectively released through the pulley structure, and the risk of bow net failure at the intersection is reduced;
3. simple structure, convenient operation, stability is high.
Drawings
Fig. 1 is a schematic structural diagram of a catenary cross cable isolating device according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a loop bar according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a pulley structure according to an embodiment of the present invention;
FIG. 4 is a schematic view of a first platen according to an embodiment of the present invention;
fig. 5 is a schematic view of an installation structure of the second pressure plate according to the embodiment of the present invention.
Description of reference numerals:
the device comprises a sleeve rod 1, a second pressing plate 2, a pulley 3, a first pressing plate 4, an equipotential cable 5, a mounting groove 6, a sliding groove 7, an arc groove 8, a cross beam 301, a longitudinal beam 302, a universal wheel 303 and a mounting seat 401.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings.
Example (b):
as shown in fig. 1 and fig. 2, a catenary cross cable isolating device comprises a cable protecting structure and a fixing structure, wherein:
the cable protection structure comprises two loop bars 1 which are arranged in a crossed manner, wherein two side edges of each loop bar 1 are respectively provided with a sliding chute 7 which is parallel to the length direction of the loop bar 1 and a mounting groove 6 for mounting a cable, a pulley structure 3 is mounted in each sliding chute 7, and the two loop bars 1 are connected in a sliding manner through the pulley structures 3;
the fixing structure comprises a first pressing plate 4 and a second pressing plate 2, wherein the first pressing plate 4 is connected with the second pressing plate 2 through a bolt, a through hole matched with a cable is formed in the joint of the first pressing plate 4 and the second pressing plate 2, the first pressing plate 4 is fixedly installed at the two ends of the loop bar 1 respectively, and the first pressing plate 4 of the loop bar 1 is connected through an equipotential cable 5.
The working principle of the technical scheme is as follows:
the loop bars 1 are respectively sleeved on two crossed cables, the mounting groove 6 of one loop bar 1 is sleeved on the cable above and the sliding groove 7 of the loop bar 1 is downward, the mounting groove 6 of the other loop bar 1 is sleeved on the cable below and the sliding groove 7 of the loop bar 1 is upward, the sliding groove 7 of the two loop bars 1 is connected at the crossing position of the sliding grooves 7 of the two loop bars 1 in a sliding manner through the pulley structure 3, and the pulley structure 3 not only can move horizontally, but also can rotate along with the two crossed loop bars 1 when the two crossed loop bars 1 rotate relatively to release the torque force; the fixing structures are arranged at two ends of the loop bar 1, the cable is clamped on the loop bar 1, and the corresponding fixing structures of the two loop bars 1 are connected through the equipotential cables 5 made of the same material as the cable, so that the phenomenon of discharging is avoided.
In another embodiment, as shown in fig. 3, the pulley structure 3 includes two cross beams 301 and a longitudinal beam 302, the cross beams 301 and the longitudinal beam 302 form an i-shaped structure, the two cross beams 301 are rotatably connected to the longitudinal beam 302, the two cross beams 301 are provided with universal wheels 303 for sliding, and the universal wheels 303 of the two cross beams 301 are respectively disposed in the sliding grooves 7 of the two loop bars 1.
The cross beam 301 can rotate around the axis of the longitudinal beam 302, when the length of the crossed cable changes due to temperature changes and expansion and contraction, the crossed cable can mutually displace through the universal wheels 303 in the pulley structure 3, and meanwhile, the rotationally connected cross beam 301 can also effectively release torque force generated when the cable displaces; when the length of the cable is not changed, the pulley structure 3 can be effectively ensured not to slide randomly due to the tight state of the cable.
In another embodiment, as shown in fig. 4 and 5, threaded holes are formed at four corners of the first pressing plate 4 and the second pressing plate 2, and the surfaces of the first pressing plate 4 and the second pressing plate 2 are provided with arc-shaped grooves 8 which are matched with each other.
This arc wall 8 with the cross section of mounting groove 6 is the same, and mutually support, the arc wall 8 of first clamp plate 4 sets up at the upper surface, and the arc wall 8 of second clamp plate 2 sets up at the lower surface, and the upper surface of first arc wall 8 coincides with the lower surface of second arc wall 8, and in the junction of two coincidence faces, two arc walls 8 form one with the parallel through-hole of 6 length direction of mounting groove, the diameter of this through-hole is the same with the diameter of clue, guarantees that the clue is fixed on loop bar 1.
In another embodiment, the side of the first pressing plate 4 is provided with a mounting seat 401, and the mounting seat 401 is matched with the sliding groove 7 and connected with the loop bar 1 through a bolt.
The mounting seat 401 is inserted into the sliding groove 7, and the mounting seat 401 is connected to the loop bar 1 by a bolt.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (4)
1. The utility model provides a contact net cross thread isolating device which characterized in that, includes thread protection architecture and fixed knot structure, wherein:
the cable protection structure comprises two sleeve rods which are arranged in a crossed manner, wherein two side edges of each sleeve rod are respectively provided with a sliding groove parallel to the length direction of the sleeve rod and a mounting groove for mounting a cable, a pulley structure is mounted in the sliding groove, and the two sleeve rods are connected in a sliding manner through the pulley structure;
the fixing structure comprises a first pressing plate and a second pressing plate, the first pressing plate is connected with the second pressing plate through bolts, through holes matched with the cables are formed in the joint of the first pressing plate and the second pressing plate, the first pressing plate is fixedly installed at the ends of the two loop bars respectively, and the first pressing plates of the two loop bars are connected through equipotential cables.
2. The device for isolating cross cables of a contact network as claimed in claim 1, wherein the pulley structure comprises two cross beams and a longitudinal beam, the cross beams and the longitudinal beam form an i-shaped structure, the two cross beams are rotatably connected with the longitudinal beam, the two cross beams are provided with universal wheels for sliding, and the universal wheels of the two cross beams are respectively arranged in the sliding grooves of the two loop bars.
3. The overhead line system cross cable isolating device of claim 1, wherein the first pressing plate and the second pressing plate are provided with threaded holes at four corners, and the surfaces of the first pressing plate and the second pressing plate are provided with arc-shaped grooves matched with each other.
4. The device for isolating cross wires of a contact network as claimed in claim 1, wherein the first pressing plate has a mounting seat on a side thereof, the mounting seat being engaged with the sliding groove and connected to the loop bar by a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110737746.0A CN113352953B (en) | 2021-06-28 | 2021-06-28 | Cross cable isolating device for contact network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110737746.0A CN113352953B (en) | 2021-06-28 | 2021-06-28 | Cross cable isolating device for contact network |
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| Publication Number | Publication Date |
|---|---|
| CN113352953A true CN113352953A (en) | 2021-09-07 |
| CN113352953B CN113352953B (en) | 2022-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110737746.0A Active CN113352953B (en) | 2021-06-28 | 2021-06-28 | Cross cable isolating device for contact network |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113978318A (en) * | 2021-12-10 | 2022-01-28 | 柳州桂通精密铸造有限公司 | Wire clamp type cross cable eccentric wear processing device |
| CN114194075A (en) * | 2021-12-06 | 2022-03-18 | 柳州桂通精密铸造有限公司 | Double-row wheel type cross cable eccentric wear processing device |
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|---|---|---|---|---|
| US3957142A (en) * | 1974-03-11 | 1976-05-18 | S. A. Chadefaud | Electrically insulated power line for supplying electrical energy to mobile devices |
| DE3623399C1 (en) * | 1986-07-11 | 1987-10-01 | Pfisterer Elektrotech Karl | Totally insulated anchor clamp (tension clamp, dead-end clamp) |
| CN2191126Y (en) * | 1994-04-30 | 1995-03-08 | 宁波市铜材厂 | Clamp for segmenting suspending of string |
| CN201105661Y (en) * | 2007-11-26 | 2008-08-27 | 周建科 | Current-carrying type adjustable integral suspension chord device |
| JP2009214617A (en) * | 2008-03-07 | 2009-09-24 | East Japan Railway Co | Messenger wire supporting pulley |
| EP2428391A2 (en) * | 2010-09-14 | 2012-03-14 | Röhl, Jan | Contact wire clamp for overhead cable crossings |
| CN207311176U (en) * | 2017-10-11 | 2018-05-04 | 中国铁建电气化局集团第二工程有限公司 | A kind of carrier cable pulley block for tunnel section contact net Horizontal Cantilever top |
| CN109720239A (en) * | 2019-03-13 | 2019-05-07 | 中铁高铁电气装备股份有限公司 | A kind of low clearance single-track tunnel overhead contact line structure |
| CN112721746A (en) * | 2021-02-02 | 2021-04-30 | 中铁二院工程集团有限责任公司 | Integral dropper device suitable for large-carrying-capacity electrified railway contact network system |
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2021
- 2021-06-28 CN CN202110737746.0A patent/CN113352953B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3957142A (en) * | 1974-03-11 | 1976-05-18 | S. A. Chadefaud | Electrically insulated power line for supplying electrical energy to mobile devices |
| DE3623399C1 (en) * | 1986-07-11 | 1987-10-01 | Pfisterer Elektrotech Karl | Totally insulated anchor clamp (tension clamp, dead-end clamp) |
| CN2191126Y (en) * | 1994-04-30 | 1995-03-08 | 宁波市铜材厂 | Clamp for segmenting suspending of string |
| CN201105661Y (en) * | 2007-11-26 | 2008-08-27 | 周建科 | Current-carrying type adjustable integral suspension chord device |
| JP2009214617A (en) * | 2008-03-07 | 2009-09-24 | East Japan Railway Co | Messenger wire supporting pulley |
| EP2428391A2 (en) * | 2010-09-14 | 2012-03-14 | Röhl, Jan | Contact wire clamp for overhead cable crossings |
| CN207311176U (en) * | 2017-10-11 | 2018-05-04 | 中国铁建电气化局集团第二工程有限公司 | A kind of carrier cable pulley block for tunnel section contact net Horizontal Cantilever top |
| CN109720239A (en) * | 2019-03-13 | 2019-05-07 | 中铁高铁电气装备股份有限公司 | A kind of low clearance single-track tunnel overhead contact line structure |
| CN112721746A (en) * | 2021-02-02 | 2021-04-30 | 中铁二院工程集团有限责任公司 | Integral dropper device suitable for large-carrying-capacity electrified railway contact network system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114194075A (en) * | 2021-12-06 | 2022-03-18 | 柳州桂通精密铸造有限公司 | Double-row wheel type cross cable eccentric wear processing device |
| CN113978318A (en) * | 2021-12-10 | 2022-01-28 | 柳州桂通精密铸造有限公司 | Wire clamp type cross cable eccentric wear processing device |
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| Publication number | Publication date |
|---|---|
| CN113352953B (en) | 2022-06-21 |
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