CN107460795B - Existing railway station changes track switch whole group in enclosed point and replaces construction technology - Google Patents

Existing railway station changes track switch whole group in enclosed point and replaces construction technology Download PDF

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Publication number
CN107460795B
CN107460795B CN201710722978.2A CN201710722978A CN107460795B CN 107460795 B CN107460795 B CN 107460795B CN 201710722978 A CN201710722978 A CN 201710722978A CN 107460795 B CN107460795 B CN 107460795B
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China
Prior art keywords
track switch
rail
track
construction
switch
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Active
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CN201710722978.2A
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CN107460795A (en
Inventor
祝汉寿
王富武
朱全泉
张大龚
吴建国
杨剑刚
刘志超
张伟刚
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Fifth Engineering Co Ltd of China Railway 21st Bureau Group Co Ltd
China Railway Group Ltd CREC
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Fifth Engineering Co Ltd of China Railway 21st Bureau Group Co Ltd
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Priority to CN201710722978.2A priority Critical patent/CN107460795B/en
Publication of CN107460795A publication Critical patent/CN107460795A/en
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Publication of CN107460795B publication Critical patent/CN107460795B/en
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B29/00Laying, rebuilding, or taking-up tracks; Tools or machines therefor
    • E01B29/02Transporting, laying, removing, or renewing lengths of assembled track, assembled switches, or assembled crossings
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B2203/00Devices for working the railway-superstructure
    • E01B2203/01Devices for working the railway-superstructure with track
    • E01B2203/017Devices for working the railway-superstructure with track removed or not present yet

Abstract

Change track switch whole group in enclosed point the invention discloses a kind of existing railway station and replace construction technology, includes the following steps: the first step, preparation of construction;A, construction lofting, b, track switch are assembled, c, assemble to be equipped at track switch in stepb and install pulley blocks and elevator, d, inspection declaration are checked and accepted, second step, track switch sliding construction in enclosed point;E, it saws rail before and after track switch, f, removes the old section of track and track switch, g, railway roadbed break bottom, h, connecting sliding rail, i, the sliding of track switch whole group, j, track switch contraposition, and k, the upper tiny fragments of stone, coal, etc. raise track, and l, make firm by ramming whole thin, third step is checked and accepted open-minded;M, track switch line direction, level, gauge are measured.A kind of existing railway station of the present invention changes track switch whole group in enclosed point and replaces construction technology, has the advantages that safe and reliable, construction is convenient low with construction cost.

Description

Existing railway station changes track switch whole group in enclosed point and replaces construction technology
Technical field
The present invention relates to a kind of track switch construction technologies, and in particular to existing railway station changes track switch whole group replacement in enclosed point and applies Work technique.
Background technique
Track switch is a kind of line connection equipment for making rolling stock be transferred to another station track from a station track, usually AT STATION, is compiled Group station is a large amount of to be laid with.There is track switch, the handling capacity of route can be given full play to, even single-track railway, laying a switch, and repair Build one section of cross wires for being greater than train length, so that it may split train.
With the high speed development of state-owned railroads cause, railway has been subjected to 6 big speed-raisings, and existing equipment is no longer satisfied The needs of current train operation, so both wired station yard modification engineerings, and the trend gradually increased is presented.
High-speed switch is the novel track structure assembled using armored concrete switch tie and heavy rail, and technology content is very Height, the more original sleeper track switch of the weight of this novel track switch increases several times, therefore changes in process construction in track switch paving, must Track switch must be laid in advance under railway line, remove original old track switch using limited blocking time, then will complete in advance New track switch try to move on to design position and installed, complete to be laid with work.If following original use manpower construction method, Difficulty of construction is larger.Main problem is self-possessed in the track switch section of track, and big movement is difficult, the existing small track switch assembling in yard space is difficult, main points construction Time, short construction was difficult.
Summary of the invention
In view of the above deficiencies, change track switch whole group replacement in enclosed point the object of the present invention is to provide existing railway station to apply Work technique has the advantages that safe and reliable, construction is convenient low with construction cost.
To achieve the above object, the technical solution provided by the present invention is:
A kind of existing railway station changes track switch whole group in enclosed point and replaces construction technology, includes the following steps:
The first step, preparation of construction;
A, construction lofting is identified the position that track switch needs to slide using red paint, while using reinforcing bar at assembled track switch Head carries out piling location, and wire-hanging rope is to determine track switch direction;
B, track switch is assembled, and smooth, compacting track switch is laid with place, and turnout sleeper is numbered and is assembled, assembling track switch trouble Front position must be aligned with section of track side is removed, and avoid track switch from sliding into rear lengthwise position and deviation occur, cause track switch vertical shift, according to To the sequence of trouble tail before trouble, rail material is successively lifted, erection joint clamping plate, track gauge block and rail fastening are all installed Afterwards, track switch geometric dimension is checked, such as: gauge, guard rail spacing even work finally, carrying out track switch weldering, and welding is welded using exothermic welding It connects, it is necessary to assure rail gap is consistent;
C, it assembles in stepb and is equipped with installation pulley blocks and elevator at track switch, by hydraulic hoisting machine at railroad turnout steel rail Installation is in place, below railroad turnout steel rail, averagely penetrates 50kg/m rail as sliding rail by track switch length, sliding rail and railroad turnout steel rail it Between pulley is installed;
D, inspection declaration is checked and accepted, and checks and accepts track switch with rail situation, rail direction either with or without hard curved, welding point height above rail surface and track switch Gauge, wherein the welding point height above rail surface requires to be+0.3 to 0mm;
Second step, track switch sliding construction in enclosed point;
E, rail is sawed before and after track switch, rail is sawed by design mileage in trouble front position when sawing rail, and position should reserve 0.3-0.5 after trouble Rice, rail gap is excessive or too small after preventing into trouble, after track switch push-in, carries out secondary saw rail by physical location after trouble;
F, the old section of track and track switch are removed, removes the connection fastener between the section of track, and carry out by crossties of the track hanging device Lifting is removed;
G, railway roadbed breaks bottom, successively excavates according to track switch two sides to intermediate sequence, until cutting depth is not less than under sleeper Square 350mm, then by the tiny fragments of stone, coal, etc. on loading machine, the upper tiny fragments of stone, coal, etc. is with a thickness of no more than 300mm;
H, connecting sliding rail installs sleeper buttress, and connecting sliding rail horizontal plane should be concordant with former sliding rail, after sliding rail spreading, both ends Height difference should be not more than 5cm;
I, track switch whole group slides, and all after the installation is completed, personnel are in place, and track switch is slowly pushed to both rails for sliding rail, buttress At road, after track switch passage in place, technical staff measures line spacing with small steel ruler, and confirmation track switch slides specific location, reduces hydraulic Elevator supporting leg gets up track switch temporary support, and construction personnel collects sleeper buttress, and extracts sliding rail out;
J, track switch aligns, and rail gap is excessive before such as branching off, and is dialled and is moved using crowbar, and contraposition before trouble is accurate.After trouble it is in place after, carry out Secondary saw rail, rail gap reserve 6-8mm;
K, the upper tiny fragments of stone, coal, etc. raises track, using the tiny fragments of stone, coal, etc. on loading machine, human assistance benefit fill out between railway ballast, cleaning fastener and guard rail remain it is broken The tiny fragments of stone, coal, etc., after the completion of the upper tiny fragments of stone, coal, etc., track jack starts track lining, raises track;
L, it makes firm by ramming whole thin, is made firm by ramming using soft pumpings tamping tool, make depth sleeper or less firm by ramming not less than 0.3m, recycling track switch both ends Rail reflux conducting wire;
Third step is checked and accepted open-minded;
M, track switch line direction, front and back height difference, gauge are measured, after self-test is qualified, is verified, conformed to again After asking, route is opened, after opening, the non-passenger train speed limit 35km/h of first row, secondary series plays speed limit 45km/h, until large size is smash Gu opening the speed of 120km/h, train continues through three times, should be in time to line if there is horizontal twist irregularity after machine five smashes three surely Make maintenance firm by ramming in road.
Preferably, every one slide rail length 4-6m in the step c, wherein increasing by 1 at switch blade reinforces sliding rail.
Preferably, in the step e, before sawing rail, rail reflux is done by connecting rail return current wire-connecting, had prevented cutting both Generated reflux electricity, causes electric shock to hurt sb.'s feelings after rail.
Preferably, the crossties of the track hanging device in the step f includes mini-excavator and hoisting mechanism, the lifting Mechanism includes lifting steel wire and hoisting ring, and the hoisting ring includes U-shaped steel bar and the buckle circle that is welded on U shape steel bar, described U-shaped steel bar is fixed at the free end of the lifting steel wire, and the lifting fixation with steel wire is installed on the mini-excavator, In old crossties of the track replacement, the hoisting ring of hoisting mechanism can be sheathed on the screw rod in crossties of the track, pass through small-sized digging Pick machine slings disassembly.
Preferably, the end of the lifting steel wire passes through the U-shaped steel bar and is fixed by wire line shoe, so as to hoisting ring Replacement.
Preferably, screw thread is offered on the inner sidewall of the buckle circle, it can be solid with screw rod clamping in crossties of the track lifting It is fixed, it improves the safety of use.
The invention has the benefit that
Existing railway station of the present invention changes track switch whole group replacement construction technology track switch in enclosed point in enclosed point and utilizes pulley Group, hydraulic hoisting machine integral slipping technology, slide track switch disposably in place, it is ensured that in construction Window time, complete whole group Switch replacement operation, convenient and efficient construction;Utilize mini-excavator lifting concrete crosstie, loading machine transport railway ballast, insulation crawler belt Digging machine paves railway ballast, changes the tactics of human sea that conventional stations change, and both wired replacement track switch operations is allowed to be turned by people intensive operation Become mechanical integrated operation, considerably reduces construction cost.
With reference to the accompanying drawing with embodiment, the present invention is further described.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is that existing railway station of the present invention changes track switch whole group replacement construction technology middle orbit sleeper hanging device in enclosed point Structural schematic diagram;
Fig. 2 is the structural schematic diagram of the hoisting mechanism of crossties of the track hanging device shown in Fig. 1;
Fig. 3 is the structural schematic diagram of another angle of hoisting mechanism of crossties of the track hanging device shown in Fig. 1.
It is each in figure that the reference numerals are as follows.
Mini-excavator -1, hoisting mechanism -2, lifting steel wire -2a, hoisting ring -2b, U-shaped steel bar -2c, buckle Circle -2d, wire line shoe -2e.
With reference to the accompanying drawing with embodiment, the present invention is further described.
Specific embodiment
Invention is further explained With reference to embodiment:
A kind of existing railway station changes track switch whole group in enclosed point and replaces construction technology, which comprises the steps of:
The first step, preparation of construction;
A, construction lofting is identified the position that track switch needs to slide using red paint, while using reinforcing bar at assembled track switch Head carries out piling location, and wire-hanging rope is to determine track switch direction;Track switch positioning must be consistent with construction drawing, prevents track switch trouble Preceding dislocation;
B, track switch is assembled, and smooth, compacting track switch is laid with place, and turnout sleeper is numbered and is assembled, assembling track switch trouble Front position must be aligned with section of track side is removed, and avoid track switch from sliding into rear lengthwise position and deviation occur, cause track switch vertical shift, according to To the sequence of trouble tail before trouble, rail material is successively lifted, erection joint clamping plate, track gauge block and rail fastening are all installed Afterwards, track switch geometric dimension is checked, such as: gauge, guard rail spacing even work finally, carrying out track switch weldering, and welding is welded using exothermic welding It connects, it is necessary to assure rail gap is consistent;
C, it assembles in stepb and is equipped with installation pulley blocks and elevator at track switch, before enclosed point starts in 3 hours, into The preparation of row construction enclosed point, hydraulic hoisting machine is installed at railroad turnout steel rail in place, and No. 12 mounting turnouts 7 are right, and No. 18 Mounting turnout 11 is right, below railroad turnout steel rail, averagely penetrates 50kg/m rail as sliding rail, every root long degree 4- by track switch length 6m.No. 12 root troubles penetrate 7 one slide rails, and No. 18 track switches penetrate 11 one slide rails, pulley is installed between sliding rail and railroad turnout steel rail;
D, inspection declaration is checked and accepted, and is checked and accepted track switch with rail situation, rail direction and is either with or without hard curved, welding point height above rail surface requirement And turnout rail away from.
Second step, track switch sliding construction in enclosed point;
E, rail is sawed before and after track switch, rail is sawed by design mileage in trouble front position when sawing rail, and position should reserve 0.3-0.5 after trouble Rice, rail gap is excessive or too small after preventing into trouble, after track switch push-in, carries out secondary saw rail by physical location after trouble;
F, the old section of track and track switch are removed, removes the connection fastener between the section of track, and carry out by crossties of the track hanging device Lifting is removed;
G, railway roadbed breaks bottom, successively excavates according to track switch two sides to intermediate sequence, until cutting depth is not less than under sleeper Square 350mm, then by the tiny fragments of stone, coal, etc. on loading machine, the upper tiny fragments of stone, coal, etc. is with a thickness of no more than 300mm;
H, connecting sliding rail installs sleeper buttress, and connecting sliding rail horizontal plane should be concordant with former sliding rail, after sliding rail spreading, both ends Height difference should be not more than 5cm;
I, track switch whole group slides, and all after the installation is completed, personnel are in place, and track switch is slowly pushed to both rails for sliding rail, buttress At road, after track switch passage in place, technical staff measures line spacing with small steel ruler, and confirmation track switch slides specific location, reduces hydraulic Elevator supporting leg gets up track switch temporary support, and construction personnel collects sleeper buttress, and extracts sliding rail out;
J, track switch aligns, and rail gap is excessive before such as branching off, and is dialled and is moved using crowbar, and contraposition before trouble is accurate.After trouble it is in place after, carry out Secondary saw rail, rail gap reserve 6-8mm;
K, the upper tiny fragments of stone, coal, etc. raises track, and using the tiny fragments of stone, coal, etc. on loading machine, human assistance benefit fills out between railway ballast, cleaning fastener, guard rail and remains the broken tiny fragments of stone, coal, etc., After the completion of the upper tiny fragments of stone, coal, etc., track jack starts track lining, raises track;
L, it makes firm by ramming whole thin, is made firm by ramming using soft pumpings tamping tool, make depth sleeper or less firm by ramming not less than 0.3m, recycling track switch both ends Rail reflux conducting wire.
Third step is checked and accepted open-minded;
M, track switch line direction, front and back height difference, gauge are measured, after self-test is qualified, is verified, conformed to again After asking, route is opened, after opening, the non-passenger train speed limit 35km/h of first row, secondary series plays speed limit 45km/h, until large size is smash Gu opening the speed of 120km/h, train continues through three times, should be in time to line if there is horizontal twist irregularity after machine five smashes three surely Make maintenance firm by ramming in road.
In the present embodiment, every one slide rail length 4-6m in the step c, wherein increasing by 1 reinforced slide at switch blade Rail.
Further, in the step e, before sawing rail, rail reflux is done by connecting rail return current wire-connecting, prevents from cutting Both generated reflux electricity after rail, causes electric shock to hurt sb.'s feelings.
Fig. 1, Fig. 2 and Fig. 3 are please referred to, the crossties of the track hanging device in the step f includes mini-excavator 1 and lifting Mechanism 2, the hoisting mechanism 2 include lifting steel wire 2a and hoisting ring 2b.The hoisting ring 2b includes U-shaped steel bar 2c and is welded in Buckle circle 2d, the U-shaped steel bar 2c on U-shaped steel bar 2c are fixed at the free end of the lifting steel wire 2a, the lifting Steel wire 2a is fixed on the mini-excavator 1.It, can be by the hoisting ring of hoisting mechanism 2 in old crossties of the track replacement 2b is sheathed on the screw rod in crossties of the track, slings disassembly by mini-excavator 1.
In the present embodiment, the end of the lifting steel wire 2a passes through the U-shaped steel bar 2c and is consolidated by wire line shoe 2e It is fixed, so as to the replacement of hoisting ring 2b.Further, screw thread is offered on the inner sidewall of the buckle circle 2d, is hung in crossties of the track It can fix, improve the safety of use with screw rod clamping when dress.
In conclusion existing railway station of the present invention, which changes track switch whole group in enclosed point, replaces construction technology track switch in enclosed point Using pulley blocks, hydraulic hoisting machine integral slipping technology, slide track switch disposably in place, it is ensured that in construction Window time, Complete the operation of whole group switch replacement, convenient and efficient construction;Using mini-excavator lifting concrete crosstie, loading machine transport railway ballast, Insulation crawler belt digging machine paves railway ballast, changes the tactics of human sea that conventional stations change, allows both wired replacement track switch operations by densely populated place Type operation is changed into mechanical integrated operation, considerably reduces construction cost.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party Formula is changed and is modified.Therefore, the invention is not limited to the specific embodiments disclosed and described above, to of the invention Some modifications and changes should also be as falling into the scope of the claims of the present invention.In addition, although being used in this specification Some specific terms, these terms are merely for convenience of description, does not limit the present invention in any way, using with its The same or similar processing method, all falls in the scope of protection of the present invention.

Claims (6)

1. a kind of existing railway station, which changes track switch whole group in enclosed point, replaces construction technology, which comprises the steps of:
The first step, preparation of construction;
A, construction lofting needs the position that slides using red paint mark track switch, at the same at assembled track switch with steel bar end into Row piling location, wire-hanging rope is to determine track switch direction;
B, track switch is assembled, and smooth, compacting track switch is laid with place, and turnout sleeper is numbered and is assembled, assembling track switch trouble anteposition Setting must be aligned with section of track side is removed, and avoid track switch from sliding into rear lengthwise position and deviation occur, track switch vertical shift is caused, before trouble To the sequence of trouble tail, rail material is successively lifted, erection joint clamping plate, track gauge block and rail fastening after being all installed, are examined Track switch geometric dimension is looked into, is even worked finally, carrying out track switch weldering, welding is welded using exothermic welding, it is necessary to assure rail gap is consistent;
C, it assembles in stepb and is equipped with installation pulley blocks and elevator at track switch, hydraulic hoisting machine is installed at railroad turnout steel rail In place, below railroad turnout steel rail, 50kg/m rail is averagely penetrated as sliding rail by track switch length, is pacified between sliding rail and railroad turnout steel rail Fill pulley;
D, inspection declaration is checked and accepted, and checks and accepts track switch with rail situation, rail direction either with or without hard curved, welding point height above rail surface and turnout rail Away from;
Second step, track switch sliding construction in enclosed point;
E, rail is sawed before and after track switch, rail is sawed by design mileage in trouble front position when sawing rail, and position should reserve 0.3-0.5 meters after trouble, prevents It is only excessive or too small into rail gap after trouble, after track switch push-in, secondary saw rail is carried out by physical location after trouble;
F, the old section of track and track switch are removed, removes the connection fastener between the section of track, and lifted by crossties of the track hanging device It removes;
G, railway roadbed breaks bottom, successively excavates according to track switch two sides to intermediate sequence, until cutting depth is not less than below sleeper 350mm, then by the tiny fragments of stone, coal, etc. on loading machine, the upper tiny fragments of stone, coal, etc. is with a thickness of no more than 300mm;
H, connecting sliding rail installs sleeper buttress, and connecting sliding rail horizontal plane should be concordant with former sliding rail, after sliding rail spreading, both ends height difference 5cm should be not more than;
I, track switch whole group slides, and all after the installation is completed, personnel are in place for sliding rail, buttress, and track switch is slowly pushed at operational railway, After track switch passage in place, technical staff measures line spacing with small steel ruler, and confirmation track switch slides specific location, reduces hydraulic hoisting machine Supporting leg gets up track switch temporary support, and construction personnel collects sleeper buttress, and extracts sliding rail out;
J, track switch aligns, and rail gap is excessive before such as branching off, and is dialled and is moved using crowbar, and contraposition before trouble is accurate, after in place after trouble, secondary saw Rail, rail gap reserve 6-8mm;
K, the upper tiny fragments of stone, coal, etc. raises track, and using the tiny fragments of stone, coal, etc. on loading machine, human assistance benefit fills out between railway ballast, cleaning fastener and guard rail and remains the broken tiny fragments of stone, coal, etc., on After the completion of the tiny fragments of stone, coal, etc., track jack starts track lining, raises track;
L, it makes firm by ramming whole thin, is made firm by ramming using soft pumpings tamping tool, make depth sleeper or less firm by ramming not less than 0.3m, recycling track switch both ends rail time Conductance line;
Third step is checked and accepted open-minded;
M, track switch line direction, front and back height difference, gauge are measured, after self-test is qualified, is verified, met the requirements again Afterwards, route is opened, after opening, the non-passenger train speed limit 35km/h of first row, secondary series plays speed limit 45km/h, until large size is made firm by ramming After machine five smashes three surely, the speed of 120km/h is opened, train continues through three times, should be in time to route if there is horizontal twist irregularity Make maintenance firm by ramming.
2. existing railway station as described in claim 1, which changes track switch whole group in enclosed point, replaces construction technology, it is characterised in that: institute Every one slide rail length 4-6m in step c is stated, wherein increasing by 1 at switch blade reinforces sliding rail.
3. existing railway station as described in claim 1, which changes track switch whole group in enclosed point, replaces construction technology, it is characterised in that: institute State in step e, before sawing rail, do rail reflux by connecting rail return current wire-connecting, prevent cutting both after rail caused by return Galvanic electricity causes electric shock to hurt sb.'s feelings.
4. existing railway station as described in claim 1, which changes track switch whole group in enclosed point, replaces construction technology, it is characterised in that: institute Stating the crossties of the track hanging device in step f includes mini-excavator (1) and hoisting mechanism (2), and the hoisting mechanism (2) includes Lifting steel wire (2a) and hoisting ring (2b), the hoisting ring (2b) include U-shaped steel bar (2c) and are welded on U-shaped steel bar (2c) Buckle circle (2d), the U-shaped steel bar (2c) are fixed at the free end of lifting steel wire (2a), the lifting steel wire (2a) It is fixed on the mini-excavator (1), it, can be by the hoisting ring of hoisting mechanism (2) in old crossties of the track replacement (2b) is sheathed on the screw rod in crossties of the track, slings disassembly by mini-excavator (1).
5. existing railway station as claimed in claim 4, which changes track switch whole group in enclosed point, replaces construction technology, it is characterised in that: institute The end for stating lifting steel wire (2a) passes through the U-shaped steel bar (2c) and is fixed by wire line shoe (2e), so as to hoisting ring (2b) Replacement.
6. existing railway station as claimed in claim 4, which changes track switch whole group in enclosed point, replaces construction technology, it is characterised in that: institute It states and offers screw thread on the inner sidewall of buckle circle (2d), can be fixed with screw rod clamping in crossties of the track lifting, improve use Safety.
CN201710722978.2A 2017-08-21 2017-08-21 Existing railway station changes track switch whole group in enclosed point and replaces construction technology Active CN107460795B (en)

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CN109944121A (en) * 2017-12-21 2019-06-28 中车沈阳机车车辆有限公司 Ballast track sleeper paving is changed trains and Ballast track sleeper paving changes method
CN112878120A (en) * 2019-11-29 2021-06-01 中国铁建高新装备股份有限公司 Mechanical replacing and laying construction method for ballast turnout
CN111648178A (en) * 2020-05-11 2020-09-11 中铁六局集团有限公司 Construction method for crossing existing route by transverse drainage channel in sealing point
CN114029697A (en) * 2021-11-09 2022-02-11 江苏省福达特种钢有限公司 Method for replacing side plate of conveying device in high-speed steel preparation process

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CN1598147A (en) * 2004-09-15 2005-03-23 中铁二十五局集团第三工程有限公司 Technology of changing railway switch construction and its equipment of changing railway switch
CN102699598A (en) * 2012-06-07 2012-10-03 中铁宝桥集团有限公司 Adjustable universal device for welding and positioning switch bed plate and operating method of adjustable universal device
CN103669132A (en) * 2013-12-20 2014-03-26 中铁四局集团有限公司 Ballast high-speed turnout existing railway line inserting-laying construction method based on P60-1/42 big number turnout model
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EP0971071A1 (en) * 1998-07-10 2000-01-12 Fassetta Mecanique Method and device for laying railway track elements using a tracked vehicle
CN1598147A (en) * 2004-09-15 2005-03-23 中铁二十五局集团第三工程有限公司 Technology of changing railway switch construction and its equipment of changing railway switch
CN102699598A (en) * 2012-06-07 2012-10-03 中铁宝桥集团有限公司 Adjustable universal device for welding and positioning switch bed plate and operating method of adjustable universal device
CN103669132A (en) * 2013-12-20 2014-03-26 中铁四局集团有限公司 Ballast high-speed turnout existing railway line inserting-laying construction method based on P60-1/42 big number turnout model
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