CN105525541A - Novel prefabricated plate type damping track structure for rail traffic - Google Patents
Novel prefabricated plate type damping track structure for rail traffic Download PDFInfo
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- CN105525541A CN105525541A CN201610013482.3A CN201610013482A CN105525541A CN 105525541 A CN105525541 A CN 105525541A CN 201610013482 A CN201610013482 A CN 201610013482A CN 105525541 A CN105525541 A CN 105525541A
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- track
- track plates
- vibration damping
- elastic layer
- plates
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/01—Elastic layers other than rail-pads, e.g. sleeper-shoes, bituconcrete
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Railway Tracks (AREA)
- Vibration Prevention Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention relates to a novel prefabricated plate type damping track structure for rail traffic. The novel prefabricated plate type damping track structure consists of steel rails, fasteners, prefabricated plates, an elastic cushion, sealing sleeves, a vertical connecting device, a filling layer and the like, wherein the elastic cushion and the prefabricated plates can be integrally compounded in a plant; holes which penetrate through track plates in the thickness direction can be reserved in the track plates to fill the filling layer and observe the filling condition; pre-formed holes allowing supporting legs to be mounted and a hole allowing a measuring positioning sign to be mounted are formed in the track plates; a centering sign for paving positioning, an embedded component for the compound connection of the elastic cushion, hoisting nails for hoisting, an embedded component for longitudinal connection of the track plates, an embedded component for mounting contacting rails and the like can be reserved in the track plates. According to the novel prefabricated plate type damping track structure disclosed by the invention, the problems of quick and high-accuracy construction and subsequent replacement are solved, and the novel prefabricated plate type damping track structure has the characteristics of being simple in construction operation procedure, high in construction speed, high in accuracy, good in track ride smoothness, low in labor intensity and the like, and conforms to the current rail traffic requirements of being environmentally-friendly, high in efficiency and low in disease, so that the problems of vibration caused by the operation of city rail traffic vehicles and secondary structure noise can be effectively reduced.
Description
Technical field
The present invention relates to the vibration damping field of track traffic, particularly relate to a kind of track traffic new precast panel formula vibration damping track.
Background technology
Along with the large scale networkization of urban track traffic develops, day Construction of Urban Rail Traffic duration is becoming tight, track structure working procedure opens the service time because more closing on, duration pressure is especially outstanding, it is even shorter that duration of laying a railway track of a general subway line about 9 months is often compressed into 6 months, traditional track structure pattern determine its construction operation link many, based on manual work, the feature such as the wayward and construction speed of construction precision is slow.When integral construction duration and duration of laying a railway track are compressed, have a strong impact on construction precision and quality of laying a railway track, cause the comfortableness of Track regularity and the operational vehicle put into effect to be deteriorated, and track disease has taken place frequently, ambient vibration and noise problem aggravation.
Tradition vibration damping track adopts the construction method of on-the-spot assembling reinforcement, cast-in-situ concrete, the speed of application of general every day is 25m to 50m, construction number needs 80 to 100 people, cast-in-situ concrete amount is large, especially in shield tunnel because manual work link that the scope of operation is narrow and a large amount of causes that construction precision is not high, operating efficiency is low, and security risk is higher, design, construction and the cost of maintenance also increase thereupon.In addition, the diseases of railway line in cast-in-place damper rail location happens occasionally, as railway roadbed easily ftractures.
For this reason, designer of the present invention, in view of above-mentioned defect, through design and a large amount of experimental studies with great concentration, proposes a kind of Prefabricated slab type vibration damping track system construction, and with this structure supporting rapid constructing method and construction equipment, with overcome current vibration damping track exist many defects.
Summary of the invention
The object of the present invention is to provide a kind of track traffic new precast panel formula, vibration damping track that damping property is adjustable.This track structure is applicable to various track vibration-reducing demand, employing batch production manufactures, realize increasingly automated special equipment to lay, there is the features such as speed of application is fast, track structure precision is high, Track regularity is good, effectively can overcome existing track structure (comprising vibration damping and non-vibration damping track) Problems existing.
For solving the problem, the invention discloses a kind of track traffic new precast panel formula vibration damping track, comprising packed layer, elastic layer and track plates successively, it is characterized in that:
Elastic layer is layed on packed layer, and this track plates is arranged to carry out vibration damping on elastic layer, and this elastic layer described adopts rubber or polyurethane elastomeric material to make;
Described track plates is provided with two parallel rail, and each rail is fixed on this track plates respectively by multiple fastener.
Wherein: described elastic layer is that face supports or point supports or ribbon support, in face supports, the soffit of track plates is laid in the whole upper surface of elastic layer, in a support, described elastic layer comprises multiple spaced cuboid, cylinder, round platform or prismoid shaped elastic layer, the soffit of described track plates is layed on described multiple elastic layer, in ribbon support, described elastic layer comprises at least two parallel elastic support bars, and the soffit of described track plates is layed on the end face of two elastic support bars.
Wherein: track plates upper surface is horizontal plane or herringbone slope form, track plates section is polygon, both sides, circular tunnel location are ramp structure, to strengthen the compliance to tunnel cross-section, rectangle, u-shaped cross-section location track plates section are rectangular cross section or both sides the same as circular tunnel section is slope form.
Wherein: in plate, rebar spacing is by certain modulus and arrangements, realizes the automated production of steel mesh reinforcement in plate.
Wherein: track plates has the 1-3 of a penetrating orbit plate thickness direction hole is reserved for the position of the building of packed layer under plate, spud pile, packed layer builds situation under plate a observation.
Wherein: track plates is install the reserved mounting condition of interim positioning supports leg, supporting leg be fitted through in plate or plate side installing sleeve device, adopt supporting leg to carry be threaded through and to fix with the threaded engagement in sleeve and adjust.
Wherein: track plates has the pre-buried condition of automatic measurement and positioning mark, by service sleeve in plate or directly utilize fastener for installing sleeve pipe to realize.
Wherein: the centering mark that on track plates, promising bed board location is arranged.
Wherein: 3-4 Special-purpose hanger nail track plates having pre-buried lifting.
Wherein: reserved track plate end arranges the built-in fitting longitudinally connected.
Wherein: the pre-buried parts being provided with pre-buried installation conductor rail.
Wherein: in plate, rebar spacing is arranged by certain modulus, is convenient to the automated production of steel mesh reinforcement.
Wherein: the built-in fitting of pre-buried elastic layer composite joint, connecting pre-buried built-in fitting is bolt sleeve, expansion bolt fixed end, simple and easy swollen bolt or wooden pre-pile anchoring, also realizes the compound of precast plate and cushion by preformed groove or pre-buried channel flow.
Wherein: the connection of vibration damping bed course and track plates adopts the distinctive method of attachment not affecting cushion blocking performance.
Wherein: bottom track plates, combined vibration-damping bed course and side bed course adopt and to be separated or integration, unequal rigidity designs.
Thus, the damping property of new precast panel formula vibration damping track system of the present invention is adjustable, be applicable to artificial or automation special equipment laying, adjustable interim vertical supporting device (supporting leg) is adopted to support, this track structure system comprises prefabricate high-precision orbital plate successively, the elastic layer of compound (can factory in compound or job site compound) on track plates surface in a special manner, the interim vertical supporting device of adjustable support height, the cast-in-place self-compacting concrete of after casting type track plates spud pile and track plates bottom or other etc. mobility tie rigid backfilling material preferably.The main construction technology order of new precast panel formula damper rail is: factory or produced on-site pre-track plated construction → track plates being carried out to hi-Fix → utilize vertical supporting device at factory or on-the-spot combined vibration-damping bed course → employings Special decking equipment to carry out temporary fixed → Concrete Filled layer once or point several times below perfusion track plates to track plates.
1, levying of new precast panel formula vibration damping track system is:
1) at factory or the prefabricated high-precision steel concrete track plates of on-the-spot employing high-precision mold.
2) track plates upper surface is horizontal plane or herringbone slope form.Track plates section is polygon, both sides, circular tunnel location are slope structure, to strengthen the compliance to tunnel cross-section, rectangle, horse-shoe tunnel section location track plates section can be rectangular cross section, can both sides the same as circular tunnel section be also slope form.
3) track plates surface arranges special support rail boss, boss is installed the fastener connecting rail.
4) in plate, rebar spacing, by certain modulus (as 25mm, 50mm integral multiple) and arrangements, achieves the automated production of steel mesh reinforcement in plate.
5) on track plates for meeting special construction and the reserved corresponding hole of use needs and pre-buried parts, mainly comprise following aspect (can according to the selective employing of real needs):
(1) built-in fitting (nylon sleeve etc.) of rail fastening is installed;
(2) 1-3 the hole (observation etc. that the position for the building of packed layer under plate, spud pile is reserved, packed layer builds situation under plate) of penetrating orbit plate thickness direction;
(3) mounting condition is reserved for installing interim location vertical supporting device.Vertical supporting device can be arranged in plate or the position of plate side.
(4) be the pre-buried mounting condition of automatic measurement and positioning mark.By service sleeve in plate or directly utilize the modes such as fastener for installing sleeve pipe to realize;
(5) be the centering mark of track slab pavement location;
(6) built-in fitting of pre-buried elastic layer composite joint.Connecting pre-buried built-in fitting can be the even wooden pre-pile anchoring etc. of bolt sleeve, expansion bolt fixed end, simple and easy swollen bolt, also realizes the compound of precast plate and cushion by the mode such as preformed groove or pre-buried channel flow;
(7) 3-4 Special-purpose hanger nail of pre-buried lifting;
(8) the longitudinal built-in fitting connected of reserved track plate;
(9) the pre-buried parts (if desired) etc. of pre-buried installation conductor rail.
2, in factory or job site vibration damping bed course is compounded in bottom precast track plate and side, realize plate, pad one.Its main points are:
1) vibration damping bed course adopts elastomeric material, comprises the shock-reducing rubber sheet material of different structure and tectonic type, polyurethanes sheet material and other similar material with elasticity and damping property;
2) for meeting the needs of different vibration damping grade, vibration damping bed course can adopt three kinds of laying methods such as completely laying bottom track plates, strip laying and point-like laying.When elastic layer is face support, the soffit of track plates is laid on the whole upper surface of elastic layer.When elastic layer is ribbon support, elastic layer comprises at least two parallel elastic support bars, and the soffit of described track plates is layed on two elastic support bars end faces.When elastic layer is for some support, comprise multiple spaced cuboid, cylinder, round platform or prismoid shaped elastic layer, the soffit of described track plates is layed on described multiple DISCRETE ELASTIC SUPPORTS support;
3) connection of vibration damping bed course and track plates adopts the distinctive method of attachment not affecting cushion blocking performance;
4) cushion blocking elastic loss is caused even to be lost efficacy for preventing the fill concrete of bottom from pouring into bed course gap, in track plates aperture portion position, arrange the elastic packing sleeve of special bottom with " the brim of a hat ", " the brim of a hat " bottom seal sleeve and cushion blocking bottom surface are effectively tightly connected.Seal sleeve also has isolation track plates and location spud pile, avoid directly firmly contacting, and allow track plates to be freely up and down out of shape and not by the effect of guide pile constraint, locate to reach the elasticity namely realizing track plates, avoid stress to concentrate, guarantee that again the effect of losing does not occur track plates elasticity;
5) combined vibration-damping bed course and plate end bottom track plates, plate side are one-body molded, and be the pattern of gumshoe (jacket) after described cushion blocking formable layer, bottom and the side of cushion blocking are as a whole.The major function of side bed course realizes track plates and the concrete elastomeric isolation of periphery, during to avoid constructing, concrete pours into the setting course between cushion blocking and track plates, and ensure track plates to be freely up and down out of shape and unfettered, avoid the situation of vibration damping " short circuit " to occur.The major function of bottom cushion is to provide track plates elasticity, realizes the vibration-damping function of track structure;
6) as required, at the position that elastic layer exposes, can seal approach be set, enters setting course to prevent dust, dirt or underground water in construction, operation process.
Known by said structure, track traffic new precast panel formula vibration damping track of the present invention is by introducing precast track plate, subtracting elastic layer, track structure is made to be provided with vibration-damping function, the vibration problem that track traffic brings can be solved well, measured by lifting reserved in plate, plate pad compound, track plates, the built-in fitting of the several functions purposes such as packed layer perfusion, the laying location of plate, the fixing of plate or mounting condition under track plates, solve well fast, high accuracy construct and the track plates in later stage, the replacing problem of elastic layer.
Detailed content of the present invention obtains by explanation described later and institute's accompanying drawing.
Accompanying drawing explanation
Fig. 1 shows the structural representation of prefabricated vibration damping track system of the present invention
Fig. 2 shows the top view that face of the present invention supports
Fig. 3 shows the point-supported top view of the present invention
Fig. 4 shows the top view of ribbon support of the present invention
Fig. 5 show plate of the present invention adjust to the right place after by schematic diagram during adjusting lever fixed head
Detailed description of the invention
See Fig. 1, the present invention relates to a kind of prefabricated vibration damping track system, described prefabricated vibration damping track system is Multi-layer design, comprises packed layer 1, elastic layer 4 and track plates 6 from bottom to up successively.
Wherein, packed layer 1 is the bottom, and elastic layer 4 is layed on packed layer 1, and preferably, this packed layer is made up of self-compacting concrete, thus provides good mobility when pouring into, and can provide good support effect.The end of elastic layer 4 is encapsulant (material such as polyurethane sealant) 15, to guarantee that dust, foreign material, water etc. do not enter elastic layer 4 and track 6 or the gap between elastic layer 4 and packed layer 1.
This elastic layer 4 is arranged on packed layer 1, to provide the elastic buffer of packed layer 1, avoids its Rapid Damage, and optionally, this elastic layer 4 described adopts rubber or polyurethane elastomeric material to make, and can provide good effectiveness in vibration suppression.
This track plates 6 is arranged to carry out vibration damping on elastic layer 4, and described track plates 6 is provided with two parallel rail 7, and each rail 7 is fixed on this track plates 6 respectively by multiple fastener 5.
Optionally, described elastic layer 4 can be face and supports (see Fig. 2), some support (see Fig. 3) and ribbon support (see Fig. 4) three kinds of modes.
In the face shown in Fig. 2 supports, the soffit of track plates 6 is laid in the whole upper surface of elastic layer 4, the described bottom of elastic layer 4 integral coating in track plates 6 and the sidepiece of both sides.
In the point shown in Fig. 3 supports, described elastic layer 4 comprises multiple spaced cuboid, cylinder, round platform or prismoid shaped elastic layer 4, and the soffit of described track plates 6 is layed on described multiple elastic layer.
In the ribbon support shown in Fig. 4, described elastic layer 4 comprises at least two parallel elastic support bars, and the soffit of described track plates 6 is layed on the end face of two elastic support bars.
Optionally, described track plates 6 section is symmetrically arranged polygon, and its both sides are ramp structure, to strengthen the compliance to tunnel cross-section.
Described track plates 6 upper surface is horizontal plane or with slope, its upper surface can have boss, and boss surface is horizontal plane or inclined-plane.
The Heave Here 11 that the upper surface of track plates 6 is reserved with 4 liftings, lays, the mark 14 of centering, the preformed hole 12 of fixed adjustment plate, installs prism hole and can utilize fastener for installing nylon sleeve, also can in plate special pre-buried nylon sleeve.
Wherein, the both sides of described track plates 6 can be provided with one-above-the-other layout 10, thus connected between track plates 6 by one-above-the-other layout 10, better avoid the mutual changing of the relative positions between plate, wherein, the connection strap that described one-above-the-other layout 10 can comprise the multiple installing hole on track plates 6 and be secured by bolts in installing hole, thus adopt longitudinal connected mode by between two pieces of precast plates.
Wherein, the middle part of described track plates 6 arranges two circular cavities 2, and described hole 2 penetrates track plates 6 and elastic layer 4, after pouring into packed layer, forms the position limiting pile of plate by hole 2.
Wherein, be provided with sealing shroud 3 in described hole 2, described sealing shroud is the cylindrical structure that elastomeric material is made, and when guaranteeing to pay close attention to packed layer in hole, avoids packing material to enter between plate and elastic layer, causes vibration damping to lose efficacy.Between plate and position limiting pile, form cushioning effect simultaneously.
Wherein, described track plates 6 adopts factorial praluction, elastic layer and track plates are combined into one in factory (in particular cases elastic layer also can be laid at the scene), after utilizing fortune wooden handcart to be transported to scene, after fine tuning platform car bed board, accurate adjustment, after adopting adjusting lever 14 fixed head, perfusion packed layer also lays gapless track.
Wherein, the both sides of described track plates 6 arrange and can be provided with gutter 8, and elastic layer 4 bottom can arrange ditch (now gutter 8 can not be established) or not arrange ditch.
Thus, slab track vibration reduction structure of the present invention is used for field of track traffic, not only damping property can carry out targeted design according to demand, and there is the features such as working procedure is simple, speed of application is fast, construction precision is high, orbital forcing is good, labour intensity is low, meet current orbit traffic environment-friendly, efficient and reduce the direction of disease, social benefit is huge, it effectively can reduce urban rail transit vehicles and run the vibration and secondary structure noise problem that produce.
It is evident that, above description and record be only citing instead of in order to limit disclosure of the present invention, application or use.Although described in an embodiment and be described in the drawings embodiment, but the present invention do not limit by accompanying drawing example and describe in an embodiment as the optimal mode thought at present with implement the present invention instruct specific examples, scope of the present invention will comprise any embodiment of manual and the appended claim fallen into above.
Claims (15)
1. a track traffic new precast panel formula vibration damping track, comprises packed layer, elastic layer and track plates successively, it is characterized in that:
Elastic layer is layed on packed layer, and this track plates is arranged to carry out vibration damping on elastic layer, and this elastic layer described adopts rubber or polyurethane elastomeric material to make;
Described track plates is provided with two parallel rail, and each rail is fixed on this track plates respectively by multiple fastener.
2. vibration damping track as claimed in claim 1, it is characterized in that: described elastic layer is that face supports or point supports or ribbon support, in face supports, the soffit of track plates is laid in the whole upper surface of elastic layer, in a support, described elastic layer comprises multiple spaced cuboid, cylinder, round platform or prismoid shaped elastic layer, the soffit of described track plates is layed on described multiple elastic layer, in ribbon support, described elastic layer comprises at least two parallel elastic support bars, the soffit of described track plates is layed on the end face of two elastic support bars.
3. vibration damping track as described in claim 1, it is characterized in that: track plates upper surface is horizontal plane or herringbone slope form, track plates section is polygon, both sides, circular tunnel location are ramp structure, to strengthen the compliance to tunnel cross-section, rectangle, u-shaped cross-section location track plates section are rectangular cross section or both sides the same as circular tunnel section is slope form.
4. vibration damping track as described in claim 1, in plate, rebar spacing is by certain modulus and arrangements, realizes the automated production of steel mesh reinforcement in plate.
5. as described in claim 1 vibration damping track, is characterized in that: track plates has the 1-3 of a penetrating orbit plate thickness direction hole is reserved for the position of the building of packed layer under plate, spud pile, packed layer builds situation under plate a observation.
6. vibration damping track as described in claim 1, it is characterized in that: track plates is install the reserved mounting condition of interim positioning supports leg, supporting leg be fitted through in plate or plate side installing sleeve device, adopt supporting leg to carry be threaded through and to fix with the threaded engagement in sleeve and adjust.
7. as described in claim 1 vibration damping track, is characterized in that: track plates has the pre-buried condition of automatic measurement and positioning mark, by service sleeve in plate or directly utilize fastener for installing sleeve pipe to realize.
8. vibration damping track as described in claim 1, is characterized in that: the centering mark that on track plates, promising bed board location is arranged.
9. vibration damping track as described in claim 1, is characterized in that: 3-4 Special-purpose hanger nail track plates having pre-buried lifting.
10. vibration damping track as described in claim 1, is characterized in that: reserved track plate end arranges the built-in fitting longitudinally connected.
11. vibration damping tracks as described in claim 1, is characterized in that: the pre-buried parts being provided with pre-buried installation conductor rail.
12. vibration damping tracks as described in claim 1, is characterized in that: in plate, rebar spacing is arranged by certain modulus, are convenient to the automated production of steel mesh reinforcement.
13. vibration damping tracks as described in claim 1, it is characterized in that: the built-in fitting of pre-buried elastic layer composite joint, connecting pre-buried built-in fitting is bolt sleeve, expansion bolt fixed end, simple and easy swollen bolt or wooden pre-pile anchoring, also realizes the compound of precast plate and cushion by preformed groove or pre-buried channel flow.
14. vibration damping tracks as described in claim 1, is characterized in that: the connection of vibration damping bed course and track plates adopts the distinctive method of attachment not affecting cushion blocking performance.
15. vibration damping tracks as described in claim 1, is characterized in that: bottom track plates, combined vibration-damping bed course and side bed course adopt and to be separated or integration, unequal rigidity designs.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610013482.3A CN105525541B (en) | 2016-01-11 | 2016-01-11 | Track traffic Prefabricated slab type vibration damping track |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610013482.3A CN105525541B (en) | 2016-01-11 | 2016-01-11 | Track traffic Prefabricated slab type vibration damping track |
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| CN105525541A true CN105525541A (en) | 2016-04-27 |
| CN105525541B CN105525541B (en) | 2018-05-18 |
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| CN105780612A (en) * | 2016-05-20 | 2016-07-20 | 常州中铁城建构件有限公司 | Prefabricated subway spliced track board and construction method thereof |
| CN106120479A (en) * | 2016-08-23 | 2016-11-16 | 吴永芳 | The board-like track structure of a kind of assembling |
| CN106427977A (en) * | 2016-11-30 | 2017-02-22 | 任长英 | Rail assembly for air cushion vehicle |
| CN106930159A (en) * | 2017-05-09 | 2017-07-07 | 隔而固(青岛)振动控制有限公司 | Vibration damping rank type variable railway roadbed and its application process |
| CN106948226A (en) * | 2017-05-09 | 2017-07-14 | 隔而固(青岛)振动控制有限公司 | Easy care cushion vibration-damping ballast |
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| CN105780612A (en) * | 2016-05-20 | 2016-07-20 | 常州中铁城建构件有限公司 | Prefabricated subway spliced track board and construction method thereof |
| CN106120479A (en) * | 2016-08-23 | 2016-11-16 | 吴永芳 | The board-like track structure of a kind of assembling |
| CN106427977A (en) * | 2016-11-30 | 2017-02-22 | 任长英 | Rail assembly for air cushion vehicle |
| CN106948226B (en) * | 2017-05-09 | 2019-04-12 | 隔而固(青岛)振动控制有限公司 | Elastic cushion vibration-damping ballast easy to maintain |
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| CN106930159A (en) * | 2017-05-09 | 2017-07-07 | 隔而固(青岛)振动控制有限公司 | Vibration damping rank type variable railway roadbed and its application process |
| CN106930159B (en) * | 2017-05-09 | 2019-06-11 | 隔而固(青岛)振动控制有限公司 | Vibration damping rank type variable railway roadbed and its application method |
| CN107905048A (en) * | 2017-11-21 | 2018-04-13 | 中铁第四勘察设计院集团有限公司 | A kind of installation method of no tiny fragments of stone, coal, etc. circuit line upper box equipment |
| CN107905048B (en) * | 2017-11-21 | 2020-04-17 | 中铁第四勘察设计院集团有限公司 | Method for mounting box body equipment on ballastless line |
| CN108316061A (en) * | 2018-01-31 | 2018-07-24 | 周兆弟 | A kind of installation method of track beam and its track foundation construction method |
| CN108396596A (en) * | 2018-04-23 | 2018-08-14 | 杭州唐普徕科技有限公司 | Novel fully-prefabricated assembled track structure for railroad track field tunnel |
| CN109763385A (en) * | 2019-02-25 | 2019-05-17 | 杭州银龙唐普徕科技有限公司 | The 8 font precast track plates suitable for Construction of Urban Rail Traffic demand |
| CN109940869A (en) * | 2019-05-05 | 2019-06-28 | 河北翼辰实业集团股份有限公司 | Tramcar score-rail entirety rubber package set technique, production system and structure |
| CN109940869B (en) * | 2019-05-05 | 2024-04-09 | 河北翼辰实业集团股份有限公司 | Tramcar grooved rail integral rubber sheath process, production system and structure |
| CN112626932A (en) * | 2020-12-22 | 2021-04-09 | 中国铁路设计集团有限公司 | Full-paved periodic cushion shock-absorbing ballast bed |
| CN112626930A (en) * | 2020-12-22 | 2021-04-09 | 中国铁路设计集团有限公司 | Strip-paved periodic cushion shock-absorbing ballast bed |
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