CN108394316A - A kind of underslung rigid contact net expansion joint - Google Patents
A kind of underslung rigid contact net expansion joint Download PDFInfo
- Publication number
- CN108394316A CN108394316A CN201810440806.0A CN201810440806A CN108394316A CN 108394316 A CN108394316 A CN 108394316A CN 201810440806 A CN201810440806 A CN 201810440806A CN 108394316 A CN108394316 A CN 108394316A
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- China
- Prior art keywords
- bar
- bus
- halfbody formula
- formula bus
- right end
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Classifications
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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
Abstract
The present invention discloses a kind of underslung rigid contact net expansion joint, this suspension type rigid contact net expansion joints, between two bus-bars, the expansion joints include left and right end halfbody formula bus-bar, the left and right end halfbody formula bus-bar is connected by suspension type guide part, the suspension type guide part includes flexible guided way and suspension draw-in groove, and the flexible guided way is that the movement of left and right end halfbody formula bus-bar provides guide rail, and the suspension draw-in groove is connect with suspension arrangement.The quality of contact net expansion joints passes to tunnel by suspension arrangement in the present invention, improves the uniformity coefficient of rigid contact net overall stiffness distribution, realize pantograph by when seamlessly transit and continuously take stream, guarantee bow net dynamic characteristic it is steady.
Description
Technical field
The invention belongs to contact net technical fields, more particularly to a kind of underslung rigid contact net expansion joint.
Background technology
Without setting ending fitting, line-outage contingency, parts will not occur for rigid contact net because of its contact line no-station pole canopy
Few, current-carrying capacity is big, securely and reliably, the features such as maintenance load is small, is widely used in subway tunnel and electric railway tunnel
In road, rigid contact net bus-bar made of aluminum alloy materials is formed with contact line made of Cu alloy material, both materials
Material can all generate phenomenon of expanding with heat and contract with cold with temperature change, and the coefficient of thermal expansion of wherein aluminium alloy is higher than the heat expansion system of copper alloy
Number.
In the arrangement of contact net, to meet the requirement of power supply aspect and mechanical aspects, contact net is divided into several certain
Length and mutually independent segmentation, referred to as " anchor section ".Being provided with conducive to the flexibility of contact net power supply is improved for anchor section, reduces thing
Therefore range, compensation device is installed.Due to the variation of environment temperature and the material property of bus-bar, need for the rigidity of each anchor section
The reserved spatial position generated when expanding with heat and contract with cold phenomenon needed for telescopic moving of contact net.Contact net is as block of bow collector of electric locomotive
Transmission line of electricity and machine sl iotadeways need to keep machinery and electrical continuity, thus in the two neighboring anchor section of rigid contact net
Between be provided with overlap or expansion pipe (or joint).Although setting overlap can meet contact net as pantograph
The function of machine sl iotadeways and transmission line of electricity, but there is elasticity mutation at rigid contact net overlap, impact is easy tod produce, is ground
Consumption is serious, has an adverse effect to bow net dynamic property, and can not only compensate adjacent anchor by the way that expansion pipe or joint is arranged
Section rigid contact net bus-bar phenomenon of expanding with heat and contract with cold, adjacent anchor section is penetrated through, can also realize pantograph seamlessly transit with
Continuously take stream.
At present generally use through expansion pipe, when which is installed, need by the connector determine connector with
Dynamic connector is fixedly connected with bus-bar respectively, by the expansion pipe can make along the longitudinally adjacent anchor section in road bus-bar penetrate through
It connects, determines connector and expansion pipe ontology synchronizing moving in expansion pipe, move connector relative expansion joint body movement, connect surely
Head moves towards when the temperature rises with dynamic connector, and temperature moves backward when reducing, the benefit of expanding with heat and contract with cold reserved in expansion pipe
It is that adjacent anchor section is expanded with heat and contract with cold the summation of compensation rate to repay gap, and compensation efficiency is low, and through expansion pipe requires two adjacent anchor sections
Rigid contact net collinearly arrange that installation and adjustment are cumbersome, expansion pipe be fixedly mounted on the busbar, remittance has been given in mass transfer
Stream row makes the bus-bar at fixed installation expansion joints become at a lumped mass of rigid contact net.
A kind of bus-bar expansion pipe is disclosed in 203032413 U of Chinese utility model patent CN, which passes through
Bus-bar linkage section is realized and is connect to rigidity with the connection of expansion pipe ontology and the opposite sliding of left and right ends expansion pipe ontology
It touches net the compensation of phenomenon of expanding with heat and contract with cold, is connected to the expansion pipe ontology of left and right ends by the way that middle connecting plate and guide sleeve is arranged
Together, the electrical connection of left and right ends bus-bar, the expansion are also realized by the electrical connection support plate being arranged on middle connecting plate
Joint component is more, complicated, and installation and adjustment are cumbersome, and sole mass is big, by the bus-bar load-bearing at left and right both ends, is formed
At mass concentration, the uniformity coefficient of rigid contact net overall stiffness distribution is reduced, unfavorable shadow is caused to bow net dynamic property
It rings.
Invention content
To solve the above-mentioned problems, the present invention proposes a kind of underslung rigid contact net expansion joint, can improve
Rigid contact net overall stiffness is evenly distributed the rigid contact net expansion joints of degree；The quality of contact net expansion joints is by hanging
Device passes to tunnel, improve rigid contact net overall stiffness distribution uniformity coefficient, realize pantograph by when it is smooth
Transition takes stream with continuous, ensures the steady of bow net dynamic characteristic.
In order to achieve the above objectives, the technical solution adopted by the present invention is：A kind of underslung rigid contact net expansion joint,
Two sections are installed between the bus-bar that circuit is longitudinal and is arranged in parallel according to constant spacing；The rigid contact net expansion joints
Including left end halfbody formula bus-bar, right end halfbody formula bus-bar and suspension type guide part, the left end halfbody formula bus-bar and the right side
Halfbody formula bus-bar is held to be connected by intermediate suspension type guide part, the left end halfbody formula bus-bar is linked to be with left end bus-bar
One, the right end halfbody formula bus-bar are connected with right end bus-bar, are fixed in left end halfbody formula bus-bar lower end
It is clamped with contact line, geometrical clamp holds contact line in right end halfbody formula bus-bar lower end；The suspension type guide part includes
Flexible guided way and suspension draw-in groove, the left end halfbody formula bus-bar stretch into the guided way I of the flexible guided way, the right side
End halfbody formula bus-bar stretches into the guided way II of the flexible guided way, the suspension dress of the suspension draw-in groove and rigid contact net
Set connection；The rigid contact net expansion joints are installed on two sections along the remittance that circuit is longitudinal and is arranged in parallel according to constant spacing
Between stream row.
Further, the flexible guided way further includes height adjusting part, the height adjusting part is mounted on flexible lead
Into the base channel of rail.
Further, suspension type guide part bottom end is equipped with bolt, the bolt and the height adjusting part
Bottom surface is in contact.
By adjusting the height of height adjusting part mounted on the bolt of suspension guiding part bottom end, to adjust the left side
The height for holding halfbody formula bus-bar and right end halfbody formula bus-bar, makes the left end halfbody formula bus-bar and right end halfbody
The contact line of formula bus-bar bottom clamping is in same contact surface, so that pantograph is from left end halfbody formula bus-bar bottom clamping
The smooth contact line for being transitioned into right end halfbody formula bus-bar bottom clamping of contact line, to ensure pantograph from an anchor section to
Another anchor section seamlessly transits.
Further, the flexible guided way further includes resilient snubber, the resilient snubber passes through fastener
Mounted on the top of flexible guided way, suspension type rigid contact net expansion joints entirety can be promoted by elastic buffer mat piece
Elasticity, to improve its service life and safety coefficient.
Further, on the left end halfbody formula bus-bar, right end halfbody formula bus-bar and suspension type guide part
It is provided with electrical connection mounting seat, copper braid over braid is installed in the electrical connection mounting seat；Realize left end halfbody formula confluence
Row and being electrically connected between right end halfbody formula bus-bar, can keep bus-bar electrical continuity, realize pantograph by when
Continuously take stream.
Further, being installed with hook-shaped contact line clamping plate by fastener on the left end halfbody formula bus-bar
I, the hook-shaped contact line clamping plate I and left end halfbody formula bus-bar clamping contact line；It is logical in the right end halfbody formula bus-bar
It crosses fastener and is installed with hook-shaped contact line clamping plate II, the hook-shaped contact line clamping plate II and the clamping of right end halfbody formula bus-bar
Contact line；So that contact line is longitudinally there is the space overlap of regular length along circuit, ensures machine sl iotadeways when pantograph slides past
With the continuity of transmission line of electricity, stationarity when ensuring that pantograph slides through, and meet in pantograph operation and continuously take stream
Requirement.
Further, being provided with the increasing of regular length in the left end halfbody formula bus-bar and left end bus-bar junction
Strong part I, the reinforcement I are connect by fastener with the left end halfbody formula bus-bar；In the right end halfbody formula bus-bar
The reinforcement II of regular length is provided with right end bus-bar junction, the reinforcement II passes through fastener and the right end half
Body formula bus-bar connects, and the setting of reinforcement can improve the rigidity of halfbody formula bus-bar, make halfbody formula bus-bar rigidity and
The rigidity of bus-bar is consistent, it is ensured that the uniformity coefficient of rigid contact net overall stiffness distribution.
Using the advantageous effect of the technical program：
The present invention propose suspension type rigid contact net expansion joints by the suspension draw-in groove on suspension type guide part top with just
Property contact net suspension arrangement connection realize suspension fix, by the mass transfer of expansion joints to tunnel, avoid the formation of quality collection
Middle place improves the uniformity coefficient of rigid contact net overall stiffness distribution, and the flexible guided way of suspension type guide part is left and right two
The free telescopic moving of end bus-bar provides guidance quality and abundant mobile space, between the rigid contact net of two adjacent anchor sections
It is flexible carried out respectively along two different guided ways, be independent of each other；
The present invention can improve the compensation efficiency of rigid contact net expansion joints, between being reserved needed for through expansion joints
Gap be compensation gap needed for the bus-bar of both ends and, and due to the space overlap of left and right both ends halfbody formula bus-bar in the present invention
Setting makes the maximum value in compensation gap needed for its required reserved compensation gap both ends Zhi Xuqu bus-bar；It is fixedly mounted
Resilient snubber at the top of flexible guided way can promote the elasticity of rigid contact net expansion joints entirety, avoid pantograph logical
Out-of-date generation impact；It is set to the bolt of the height adjusting part and the installation of suspension type guide part bottom end in flexible guided way base channel
To adjust the contact line of left and right ends halfbody formula bus-bar clamping, it is made to be in same contact surface；Left end halfbody formula bus-bar
It is connected with left end bus-bar, right end halfbody formula bus-bar is connected with right end bus-bar, left and right ends halfbody formula confluence
Row maintains machinery and continuity electrically with left and right ends bus-bar, and left and right ends halfbody formula bus-bar is along circuit longitudinal direction
There are the space overlap of regular length, realize pantograph by when seamlessly transit；
The present invention is mounted on by setting on left end halfbody formula bus-bar, right end halfbody formula bus-bar and suspension type guide part
Electrical connection mounting seat, copper braid over braid is mounted in electrical connection mounting seat, left and right ends halfbody formula bus-bars is kept
Electrical continuity, realize pantograph by when continuous take stream, the overall structure of entire suspension type rigid contact net expansion joints
Simply, feature-rich, it installs, is easy to adjust.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of underslung rigid contact net expansion joint of the present invention；
Fig. 2 is the side view that underslung rigid contact net expansion joint is planted in the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of left end halfbody formula bus-bar in the embodiment of the present invention；
Fig. 4 is the structural schematic diagram of right end halfbody formula bus-bar in the embodiment of the present invention；
Fig. 5 is the structural schematic diagram of centre mounted type guide part of the embodiment of the present invention；
Fig. 6 is the structural schematic diagram of resilient snubber in the embodiment of the present invention；
Fig. 7 is the structural schematic diagram of height adjusting part in the embodiment of the present invention；
Wherein, 1 is left end halfbody formula bus-bar, and 2 be right end halfbody formula bus-bar, and 3 be contact line, and 41 be guided way I, 42
It is guided way II, 5 be suspension draw-in groove, and 6 be height adjusting part, and 7 be resilient snubber, and 81 be hook-shaped contact line clamping plate I, and 82 be to hook
Shape contact line clamping plate II, 9 be suspension type guide part, and 101 be reinforcement I, and 102 be reinforcement II, and 11 left end bus-bars, 12 be right
Bus-bar is held, 13 be electrical connection mounting seat, and 14 be copper braid over braid, and 15 be bolt, and 16 be base channel.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention is made into one below in conjunction with the accompanying drawings
Step illustrates.
In the present embodiment, referring to shown in Fig. 1-Fig. 7, the present invention proposes a kind of underslung rigid contact net expansion and connects
Head, the rigid contact net expansion joints are installed on two sections along the bus-bar that circuit is longitudinal and is arranged in parallel according to constant spacing
Between；The rigid contact net expansion joints include that left end halfbody formula bus-bar 1, right end halfbody formula bus-bar 2 and suspension type are led
To part 9, the left end halfbody formula bus-bar 1 is connect with right end halfbody formula bus-bar 2 by intermediate suspension type guide part 9, institute
It states left end halfbody formula bus-bar 1 to be connected with left end bus-bar 11, the right end halfbody formula bus-bar 2 and right end bus-bar 12
It is connected, holds contact line 3 in the 1 lower end geometrical clamp of left end halfbody formula bus-bar, in the right end halfbody formula bus-bar 2
Lower end geometrical clamp holds contact line 3；The suspension type guide part 9 includes flexible guided way and suspension draw-in groove 5, the left end halfbody
Formula bus-bar 1 stretches into the guided way I 41 of the flexible guided way, and the right end halfbody formula bus-bar 2 stretches into described stretch and leads
Into the guided way II 42 of rail, the suspension draw-in groove 5 is connect with the suspension arrangement of rigid contact net
In the specific implementation：
As shown in Fig. 1-Fig. 7, this suspension type rigid contact net expansion joints connect bus-bar 11,12, bus-bar 11, left end
Halfbody formula bus-bar 1 is cut by the bus-bar of a root long 12m by " Z " font with right end halfbody formula bus-bar 2 and bus-bar 12
It obtaining, left end halfbody formula bus-bar 1 is connected with bus-bar 11, and right end halfbody formula bus-bar 2 is connected with bus-bar 12,
Left end halfbody formula bus-bar 1 and 2 length of right end halfbody formula bus-bar are 2.5m, to left end and right end bus-bar because of temperature change
And the compensating length of the phenomenon of expanding with heat and contract with cold generated is 500mm, bus-bar 11,12 is fixed by rigid contact net suspension arrangement
In tunnel top, 1 bottom of left end halfbody formula bus-bar is equipped with hook-shaped contact line clamping plate I 81, left end halfbody formula by fastener
Bus-bar 1 completes the clamping to contact line 3, left end halfbody formula bus-bar 1 and bus-bar 11 with hook-shaped contact line clamping plate I 81 jointly
Continuity is remain in machinery and electrically, 2 bottom of right end halfbody formula bus-bar is installed with hook-shaped contact by fastener
Wireplint II 82, right end halfbody formula bus-bar 2 complete the clamping to contact line 3, right end with hook-shaped contact line clamping plate II 82 jointly
Halfbody formula bus-bar 2 remains in machinery and electrically continuity with bus-bar 12, and copper conjunction can be used in " hook " shape contact line clamping plate
Gold manufactures；Left end halfbody formula bus-bar 1 is connect with right end halfbody formula bus-bar 2 by the suspension type guide part 9 of long 2m, installation
When longitudinally there is length along circuit with right end halfbody formula bus-bar 2 according to left end halfbody formula bus-bar 1 when minimum environment temperature
The space overlap of 2m carries out installation calculating, and aluminium alloy can be used to manufacture in suspension type guide part 9, and suspension type guide part 9 includes stretching
Contracting guided way, left end halfbody formula bus-bar 1 stretch into a guided way I 41 of flexible guided way, and right end halfbody formula bus-bar 2 is stretched
In another guided way II 42 for entering flexible guided way, 1 cloth parallel with right end halfbody formula bus-bar 2 of left end halfbody formula bus-bar
Set, keep the constant spacing of 40mm, rigid contact net bus-bar be affected by temperature when expanding with heat and contract with cold left end halfbody formula bus-bar 1 with
The telescopic moving of right end halfbody formula bus-bar 2 is not interfere with each other；Suspension type guide part further includes suspension draw-in groove 5, suspension draw-in groove 5 with just
Property overhead contact line device connection, by the mass transfer of rigid contact net expansion joints to tunnel.
Meanwhile in order to ensure the degree that is evenly distributed of suspension type rigid contact net expansion joints overall stiffness, in left end half
Body formula bus-bar 1 is provided with the rigidity reinforcement I 101 that length is 600mm with 11 junction of left end bus-bar by fastener,
Right end halfbody formula bus-bar 2 is provided with the rigidity reinforcement that length is 600mm with 12 junction of right end bus-bar by fastener
II 102, aluminium alloy can be used to manufacture in rigidity reinforcement.
In addition, in order to ensure the electrical continuity between left end halfbody formula bus-bar 1 and right end halfbody formula bus-bar 2, it is real
Existing pantograph by when it is continuous take stream, in suspension type guide part 9 and left end halfbody formula bus-bar 1 and right end halfbody formula bus-bar
It is respectively provided on 2 and electrical connection erection support 13 is installed, the copper that length is 400mm is installed on electrical connection erection support 13 and is woven
Band 14, copper braid over braid 14 changes curved shape adaptation halfbody formula and converges when left and right ends halfbody formula bus-bar is moved along the guided way that stretches
Movement of the stream row relative to flexible guided way, 13 length of electrical connection bearing on the halfbody formula bus-bar of left and right ends are
230mm, holding copper braid over braid 14 makes it not drop and influence passing through for pantograph, and copper alloy can be used in electrical connection erection support
To manufacture.
As shown in Fig. 2, the height of left end halfbody formula bus-bar 1 and right end halfbody formula bus-bar 2 is adjusted for convenience,
The contact line 3 of left and right ends halfbody formula bus-bar bottom clamping is set to be in same contact plane, in the base channel of flexible guided way
Height adjusting part 6 is installed, height adjusting part 6 can be used rubber to manufacture, pacify by adjusting suspension guide part bottom end in 16
The bolt 15 of dress adjusts the position of height adjusting part 6, to adjust left end halfbody formula bus-bar 1 and right end halfbody formula bus-bar 2
Height, it is ensured that the contact line 3 of left and right both ends halfbody formula bus-bar bottom clamping is realized by electricity in same contact plane
Seamlessly transitting when bow passes through；To promote the elasticity of this suspension type rigid contact net expansion joints itself entirety, pantograph is avoided
By when generate impact, "eight" shape resilient snubber 7 is installed with by fastener at the top of flexible guided way, " eight "
The up and down surplus for providing spatial variations for being set as halfbody formula bus-bar of font resilient snubber 7, enhances left end
The smoothness of halfbody formula bus-bar 1 and the telescopic moving in flexible guided way of right end halfbody formula bus-bar 2, "eight" shape elasticity are slow
55Si2Mn spring steel can be used to manufacture in stamping 7.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (7)
1. a kind of underslung rigid contact net expansion joint, which is characterized in that the rigid contact net expansion joints are installed on
Two sections along circuit longitudinal direction and according between the bus-bar of constant spacing parallel arrangement；The rigid contact net expansion joints include a left side
Hold halfbody formula bus-bar (1), right end halfbody formula bus-bar (2) and suspension type guide part (9), the left end halfbody formula bus-bar
(1) it is connect by intermediate suspension type guide part (9) with right end halfbody formula bus-bar (2), the left end halfbody formula bus-bar (1)
It is connected with left end bus-bar (11), the right end halfbody formula bus-bar (2) is connected with right end bus-bar (12), in institute
It states left end halfbody formula bus-bar (1) lower end geometrical clamp and holds contact line (3), it is solid in right end halfbody formula bus-bar (2) lower end
Clamp holds contact line (3)；The suspension type guide part (9) includes flexible guided way and suspension draw-in groove (5), the left end halfbody
Formula bus-bar (1) stretches into the guided way I (41) of the flexible guided way, and the right end halfbody formula bus-bar (2) is stretched into described
In the guided way II (42) of flexible guided way, the suspension draw-in groove (5) connect with the suspension arrangement of rigid contact net.
2. a kind of underslung rigid contact net expansion joint according to claim 1, which is characterized in that described stretch is led
Further include height adjusting part (6) to rail, the height adjusting part (6) is mounted in the base channel (16) of flexible guided way.
3. a kind of underslung rigid contact net expansion joint according to claim 2, which is characterized in that the suspension type
Guide part (9) bottom end is equipped with bolt (15), and the bolt (15) is in contact with the bottom surface of the height adjusting part (6).
4. according to any a kind of underslung rigid contact net expansion joint in claim 1-3, which is characterized in that institute
It further includes resilient snubber (7) to state flexible guided way, and the resilient snubber (7) is mounted on flexible guided way by fastener
Top.
5. a kind of underslung rigid contact net expansion joint according to claim 1, which is characterized in that in the left end
It is both provided with electrical connection mounting seat on halfbody formula bus-bar (1), right end halfbody formula bus-bar (2) and suspension type guide part (9)
(13), copper braid over braid (14) is installed on the electrical connection mounting seat (13).
6. a kind of underslung rigid contact net expansion joint according to claim 1 or 5, which is characterized in that described
Hook-shaped contact line clamping plate I (81), the hook-shaped contact line are installed with by fastener on left end halfbody formula bus-bar (1)
Clamping plate I (81) and left end halfbody formula bus-bar (1) clamping contact line (3)；Pass through fastening in the right end halfbody formula bus-bar (2)
Part is installed with hook-shaped contact line clamping plate II (82), the hook-shaped contact line clamping plate II (82) and right end halfbody formula bus-bar
(2) clamping contact line (3).
7. a kind of underslung rigid contact net expansion joint according to claim 6, which is characterized in that in the left end
Halfbody formula bus-bar (1) is provided with the reinforcement I (101) of regular length, the reinforcement I with left end bus-bar (11) junction
(101) it is connect with the left end halfbody formula bus-bar (1) by fastener；In the right end halfbody formula bus-bar (2) and right end
Bus-bar (12) junction is provided with the reinforcement II (102) of regular length, and the reinforcement II (102) passes through fastener and institute
State right end halfbody formula bus-bar (2) connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810440806.0A CN108394316B (en) | 2018-05-10 | 2018-05-10 | Suspension type rigid contact net expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810440806.0A CN108394316B (en) | 2018-05-10 | 2018-05-10 | Suspension type rigid contact net expansion joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108394316A true CN108394316A (en) | 2018-08-14 |
| CN108394316B CN108394316B (en) | 2023-07-07 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810440806.0A Active CN108394316B (en) | 2018-05-10 | 2018-05-10 | Suspension type rigid contact net expansion joint |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112389282A (en) * | 2020-11-17 | 2021-02-23 | 中铁十二局集团电气化工程有限公司 | Construction method for expansion joint of overhead rigid contact network at speed of 160km per hour |
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