CN114954141A - Large-span rigid overhead line system suspension system under viaduct working condition - Google Patents
Large-span rigid overhead line system suspension system under viaduct working condition Download PDFInfo
- Publication number
- CN114954141A CN114954141A CN202210531930.4A CN202210531930A CN114954141A CN 114954141 A CN114954141 A CN 114954141A CN 202210531930 A CN202210531930 A CN 202210531930A CN 114954141 A CN114954141 A CN 114954141A
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- busbar
- suspension
- bus bar
- suspension structure
- pull rod
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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
-
- 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
- B60M1/24—Clamps; Splicers; Anchor tips
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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
- B60M1/26—Compensation means for variation in length
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a large-span rigid contact net suspension system under a viaduct working condition, which comprises cross beams, a guy cable type suspension structure, a pull rod type suspension structure, a cross beam position suspension structure and a busbar, wherein a pier is positioned between two adjacent cross beams, the busbar is suspended on the cross beams through the guy cable type suspension structure, the pull rod type suspension structure and the cross beam position suspension structure, the cross beam position suspension structure is positioned below the cross beams, the guy cable type suspension structure and the pull rod type suspension structure are positioned between the two adjacent cross beams, the pull rod type suspension structure is connected with the cross beams positioned in the middle of an anchor section of the busbar, and the busbar positioned at the maximum pull-out value of the busbar adopts a pre-bent type busbar. The invention has large installation span, convenient adjustment, small transverse stress and lower adaptation clearance, and realizes the installation and suspension and stable flow passing of the contact network under the working condition of a multi-layer overpass and the like.
Description
Technical Field
The invention belongs to the technical field of rail transit, and particularly relates to a large-span rigid overhead line system suspension system under the working condition of a viaduct.
Background
The rigid contact net is generally used for the lower section of an urban rail transit ground, and is a common contact net design scheme for traction and power supply. At present, flexible contact nets are generally adopted in overhead sections at home and abroad, the flexible contact nets are provided with hanging strings at certain intervals through carrier cables to ensure the smoothness of the contact lines, and the carrier cables are in a catenary state; the rigid contact net ensures the smoothness of the contact line through the bus bar with higher rigidity and weight, and is characterized in that the distance between suspension points is smaller.
With the development of cities, overpasses in cities, particularly multi-layer overpasses, are more and more common, and the construction height of elevated section rail traffic is continuously compressed. The flexible suspension of the contact net is limited in application due to the shortest requirement of a dropper and the minimum requirement of installation clearance of a catenary on space. At present, the rigid contact net is limited by overhigh investment caused by the fact that the number of suspension points is multiplied, and no practical example exists in the rigid contact net applied to the overhead working condition. Meanwhile, the traditional rigid contact net has small suspension span, dense and continuous structures are needed above the circuit to install the bus suspension device, and the attractiveness is poor; the adjustment of the pull-out values of different suspension points can cause transverse stress, and the long-time transverse stress can cause the change of the pull-out values of the suspension points, so that the current-donating performance of the bow net is reduced, and the reliability of the rail transit AC power supply system is reduced.
Disclosure of Invention
The invention provides a large-span rigid contact net suspension system under the working condition of a viaduct by utilizing a suspension device consisting of a stay cable and a sliding bus clamp aiming at the defects in the conventional rigid suspension scheme and the actual working condition of lower installation clearance at the pier position of the viaduct. The invention has large installation span, moderate cost, convenient adjustment, small transverse stress and lower adaptation clearance, and can realize the installation and suspension and stable flow passing of the contact net under the working condition of a multi-layer overpass and the like.
The technical scheme adopted by the invention is as follows: the utility model provides a big span rigidity contact net suspension system of overpass operating mode, includes crossbeam, guy cable formula suspension, pull rod formula suspension, crossbeam position suspension and busbar, and the pier is located between two adjacent crossbeams, the busbar passes through guy cable formula suspension, pull rod formula suspension, crossbeam position suspension hang in on the crossbeam, crossbeam position suspension is located the crossbeam below, guy cable formula suspension, pull rod formula suspension all are located between two adjacent crossbeams, pull rod formula suspension with be located anchor section middle part the crossbeam is connected, is located busbar maximum pulling value department the busbar adopts the type of preflex busbar.
Furthermore, one beam is arranged at every three spans.
Further, crossbeam position suspended structure includes busbar fastener A, suspends insulator in midair, regulating plate and staple bolt, busbar fastener A is connected with suspending the insulator in midair, it is connected with the regulating plate to suspend the insulator in midair, the regulating plate is fixed in through the staple bolt on the crossbeam.
Furthermore, the guy cable type suspension structure comprises a busbar clamp B, a guy cable, a lower anchor insulator and an anchoring part, wherein the anchoring part is fixed on the cross beam, the busbar clamp B is connected with the anchoring part through the guy cable, and the lower anchor insulator is arranged between the busbar clamp B and the anchoring part on the guy cable.
Further, the number of the bus bar wire clamps B between the adjacent cross beams is one or two. When the number of the bus bar wire clamps B is two, one side of each bus bar wire clamp B is connected with the anchoring piece through a stay cable, and the other side of each bus bar wire clamp B is connected with the adjacent bus bar wire clamp B through the stay cable; when the number of the bus bar wire clamps B is one, the two sides of the bus bar wire clamps B are connected with the anchoring pieces through inhaul cables.
Furthermore, the pull rod type suspension structure comprises a middle anchor wire clamp, a pull rod, an insulating rod, an adjusting bolt and an anchoring piece, wherein the middle anchor wire clamp, the pull rod, the insulating rod, the adjusting bolt and the anchoring piece are sequentially connected, and the anchoring piece is fixed on the cross beam.
Further, the bus bar is connected with the stay cable type suspension structure and the beam position suspension structure in a sliding mode; the bus bar is fixedly connected with the pull rod type suspension structure.
Furthermore, cross beams are arranged at the joints of the anchor sections in an encrypted mode, longitudinal steel beams are arranged between the cross beams, and the cross beam position suspension structures are fixed on the cross beams or the steel beams.
Furthermore, the cross beam is made of a round steel tube or H-shaped steel.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention optimizes the suspension structure of the contact net, increases the distance between the support columns and the portal frame and reduces the number of the support columns required by suspension.
(2) The invention purposefully reduces the requirement of suspension clearance according to the position of limited clearance.
(3) The invention optimizes the plane arrangement of the rigid contact net and eliminates the transverse stress between different suspension points of the rigid contact net.
(4) The invention optimizes the suspension of the anchor section joint and facilitates the connection of different anchor sections.
(5) The invention is convenient for adjusting the hanging installation pull-out value of the overhead contact line.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of a stay-cable suspension structure and a beam-position suspension structure according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a drawbar type suspension according to an embodiment of the invention;
fig. 4 is a schematic structural view of an anchor segment joint according to an embodiment of the present invention.
In the figure: 1-busbar, 2-busbar clamp A, 3-suspension insulator, 4-adjusting plate, 5-hoop, 6-anchoring piece, 7-anchoring insulator, 8-inhaul cable, 9-busbar clamp B, 10-cross beam, 11-middle anchoring clamp, 12-pull rod, 13-insulating rod, 14-adjusting bolt and 15-steel beam.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The embodiment of the invention provides a large-span rigid overhead line system suspension system under a viaduct working condition, which comprises a cross beam 10, a stay cable type suspension structure, a pull rod type suspension structure, a cross beam position suspension structure and a bus bar 1, as shown in figures 1-4. The pier is located between two adjacent beams 10. The beam position suspension structure is fixed below the beam 10, and the stay cable type suspension structure and the pull rod type suspension structure are both located between the two adjacent beams 10. The tie-rod suspension structure is connected to the cross beam 10 located in the middle of the bus bar anchor section. The stay cable suspension is connected to the cross member 10. In the embodiment, the characteristics that the bus bar 1 at the position of the cross beam 10 needs to be installed with high clearance and the bus bar 1 at the middle position of the two cross beams 10 needs to be installed with low clearance are utilized to realize the suspension of the overhead contact network for installing the clearance-limited section under a pier or an upper collapsed bridge. And a strut for fixedly supporting the cross beam 10 is arranged every three spans, so that the suspension of a rigid overhead line system is realized under the condition that the span of a supporting structure under the working condition of the viaduct is large on the basis of slightly increasing the struts. The busbar 1 is suspended on the beam 10 by the stay-cable type suspension structure, the pull-rod type suspension structure and the beam position suspension structure. The busbar 1 is connected with the pull-rope type suspension structure and the beam position suspension structure in a sliding mode and fixedly connected with the pull-rod type suspension structure. The busbar 1 can longitudinally extend and retract freely in the stay cable type suspension structure and the beam position suspension structure, and longitudinal force generated by expansion with heat and contraction with cold of the busbar 1 can be eliminated. The busbar 1 at the position of the maximum pull-out value of the busbar adopts a pre-bent busbar, and the other part of the busbar 1 adopts a linear busbar (a common busbar), so that the internal transverse force of the busbar 1 formed by positioning the pull-out value is eliminated. The anchor section joints are provided with columns for fixing and supporting the cross beams 10 in an encrypted manner, and longitudinal steel beams 15 are arranged between the cross beams 10. The beam position suspension structure is fixed on the beam 10 or the steel beam 15. The steel beam 15 and the encrypted cross beam 10 are convenient for adjusting the distance between the suspension points of the anchor section joints.
As shown in fig. 2, the stay-cord type suspension structure includes a bus bar clip B9, a stay 8, a lower anchor insulator 7, and an anchor 6. The two anchoring pieces 6 are respectively fixed on one cross beam 10, the bus bar clamp B9 is connected with the anchoring pieces 6 through a guy cable 8, and the two bus bar clamps B9 are also connected through the guy cable 8. And a lower anchor insulator 7 is arranged on the inhaul cable 8 between the bus bar wire clamp B9 and the anchoring piece 6. The direction of the cable 8 is consistent with the direction of the bus bar 1, the bus bar clip B9 is connected with the bus bar 1, and the bus bar 1 can freely stretch and contract longitudinally in the bus bar clip B9. When the guy cable type suspension structure has only one bus bar clamp B9, both sides of the bus bar clamp B9 are connected with one anchoring member 6 through guy cables 8.
The beam position suspension structure shares the beam 10 with the stay cable type suspension structure and the pull rod type suspension structure. Crossbeam position suspended structure includes 1 fastener A of busbar, suspension insulator 3, regulating plate 4 and staple bolt 5, 1 fastener A of busbar is connected with suspension insulator 3, suspension insulator 3 is connected with regulating plate 4, regulating plate 4 is fixed in through staple bolt 5 on the crossbeam 10. The bus bar 1 is connected to the bus bar 1 by a clamp a, and the bus bar 1 can freely stretch and contract longitudinally in the bus bar 1 clamp a.
As shown in fig. 3, the tie-rod type suspension structure includes a middle anchor clamp 11, a tie rod 12, an insulating rod 13, an adjusting bolt 14 and an anchoring member 6, wherein the middle anchor clamp 11, the tie rod 12, the insulating rod 13, the adjusting bolt 14 and the anchoring member 6 are sequentially connected, and the anchoring member 6 is fixed on the beam 10. The center anchor clamps 11 are connected to the bus bar 1. The pull rod type suspension structure is used for suspension points on two sides of a beam 10 in the middle of the anchor section, replaces the original center anchor knot and prevents the bus bar 1 from moving.
When the same beam 10 is connected with the pull rod type suspension structure and the pull cable type suspension structure at the same time, a plurality of anchoring parts 6 can be arranged and respectively connected with the adjusting bolt 14 and the pull cable 8; when the position is appropriate, only one anchoring part 6 can be arranged, and the adjusting bolt 14 and the inhaul cable 8 are connected at the same time.
The cross beam 10 may take the form of a round steel tube or H-shaped steel. The cross beam 10 and the supporting structure are in a cantilever or door-shaped frame form according to requirements, and the corresponding anchor ear 5 and the anchor part 6 can be adjusted according to the form of the cross beam 10. The beam 10 is used for anchoring suspension pull wires and suspension points; and controlling and adjusting the pull-out value of the suspension point.
In the embodiment, the cross beam position suspension structure is adopted as a control point of the pull-out value at the maximum and minimum pull-out value positions of the anchor section and the joint position of the anchor section, the stay cable type suspension structure and the pull rod type suspension structure are used as auxiliary control points of the pull-out value at intervals at other positions, the stay cable type suspension structure and the pull rod type suspension structure are only used for suspending the busbar 1 and are not used as suspension points for controlling the pull-out value, the key control of the installation and adjustment of the pull-out value can be realized, the convenience and the convenience are both considered, and the aim of eliminating the transverse stress of the busbar 1 is finally achieved.
The present invention has been described in detail with reference to the embodiments, but the description is only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The scope of the invention is defined by the claims. The technical solutions of the present invention or those skilled in the art, based on the teaching of the technical solutions of the present invention, should be considered to be within the scope of the present invention, and all equivalent changes and modifications made within the scope of the present invention or equivalent technical solutions designed to achieve the above technical effects are also within the scope of the present invention.
Claims (9)
1. The utility model provides a big span rigidity contact net suspension of overpass operating mode which characterized in that: including crossbeam, guyed suspended structure, pull rod formula suspended structure, crossbeam position suspended structure and busbar, the pier is located between two adjacent crossbeams, the busbar passes through guyed suspended structure, pull rod formula suspended structure, crossbeam position suspended structure hang in on the crossbeam, crossbeam position suspended structure is located the crossbeam below, guyed suspended structure, pull rod formula suspended structure all are located between two adjacent crossbeams, pull rod formula suspended structure with be located busbar anchor section middle part the crossbeam is connected, is located the biggest pullout value department of busbar the busbar adopts the type of bending in advance busbar.
2. The large-span rigid overhead line system suspension system for the viaduct working condition of claim 1, wherein: and arranging one beam every three spans.
3. The large-span rigid overhead line system suspension system for the viaduct working condition of claim 1, wherein: the beam position suspension structure comprises a bus bar wire clamp A, a suspension insulator, an adjusting plate and a hoop, wherein the bus bar wire clamp A is connected with the suspension insulator, the suspension insulator is connected with the adjusting plate, and the adjusting plate is fixed on the beam through the hoop.
4. The large-span rigid overhead line system suspension system for the viaduct working condition of claim 1, wherein: the guy cable type suspension structure comprises a busbar cable clamp B, a guy cable, a lower anchor insulator and an anchoring part, wherein the anchoring part is fixed on the cross beam, the busbar cable clamp B is connected with the anchoring part through the guy cable, and is positioned between the busbar cable clamp B and the anchoring part, and the lower anchor insulator is arranged on the guy cable.
5. The large-span rigid overhead line system suspension system for the viaduct working condition of claim 4, wherein: when the number of the bus bar wire clamps B between the adjacent cross beams is two, one side of each bus bar wire clamp B is connected with the anchoring piece through a stay cable, and the other side of each bus bar wire clamp B is connected with the adjacent bus bar wire clamp B through the stay cable; when the number of the bus bar wire clamps B is one, the two sides of the bus bar wire clamps B are connected with the anchoring pieces through inhaul cables.
6. The large-span rigid overhead line system suspension system for the viaduct working condition of claim 1, wherein: the pull rod type suspension structure comprises a middle anchor wire clamp, a pull rod, an insulating rod, an adjusting bolt and an anchoring piece, wherein the middle anchor wire clamp, the pull rod, the insulating rod, the adjusting bolt and the anchoring piece are sequentially connected, and the anchoring piece is fixed on the cross beam.
7. The large-span rigid catenary suspension system under the viaduct working condition of claim 1, characterized in that: the bus bar is connected with the pull rope type suspension structure and the beam position suspension structure in a sliding mode; the bus bar is fixedly connected with the pull rod type suspension structure.
8. The large-span rigid overhead line system suspension system for the viaduct working condition of claim 1, wherein: the anchor section joint is provided with cross beams in an encrypted mode, longitudinal steel beams are arranged between the cross beams, and the cross beam position suspension structure is fixed on the cross beams or the steel beams.
9. The large-span rigid overhead line system suspension system for the viaduct working condition of claim 1, wherein: the cross beam is made of circular steel tubes or H-shaped steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210531930.4A CN114954141A (en) | 2022-05-17 | 2022-05-17 | Large-span rigid overhead line system suspension system under viaduct working condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210531930.4A CN114954141A (en) | 2022-05-17 | 2022-05-17 | Large-span rigid overhead line system suspension system under viaduct working condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114954141A true CN114954141A (en) | 2022-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210531930.4A Pending CN114954141A (en) | 2022-05-17 | 2022-05-17 | Large-span rigid overhead line system suspension system under viaduct working condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114954141A (en) |
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2022
- 2022-05-17 CN CN202210531930.4A patent/CN114954141A/en active Pending
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