CN112501956A - Ballastless track - Google Patents
Ballastless track Download PDFInfo
- Publication number
- CN112501956A CN112501956A CN202011423219.4A CN202011423219A CN112501956A CN 112501956 A CN112501956 A CN 112501956A CN 202011423219 A CN202011423219 A CN 202011423219A CN 112501956 A CN112501956 A CN 112501956A
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- Prior art keywords
- spring
- track
- sleeve
- embedded
- main body
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Classifications
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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
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
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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
- E01B2/00—General structure of permanent way
Abstract
The invention provides a ballastless track which comprises a track lower foundation, a concrete column, a spring damper and a track plate, wherein the track lower foundation is fixedly connected with the concrete column, the concrete column is connected with one end of the spring damper, and the other end of the spring damper is connected with the track plate. The ballastless track provided by the invention has the functions of large-scale track adjustment and timely track adjustment.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a ballastless track.
Background
With the continuous promotion of the high-speed process of the railway, the ballastless track has the characteristics of high smoothness, high stability, small maintenance workload and the like, and is widely used on high-speed railways, urban rail transit and urban railways. When the ballastless track is deformed under track lines such as uneven settlement of a roadbed, longitudinal deformation of a bridge foundation, staggered layers of a movable fracture zone and the like during operation, the smoothness of the track is greatly influenced, so that the driving safety is endangered, the ballastless track needs to be adjusted to adapt to the requirement of unsmooth track, and the operation requirement of a high-speed railway is met.
At present, after a ballastless track is built, the geometric shape and position of the ballastless track are difficult to change, engineering structures such as roadbeds, tunnels and the like do not have deformation adjustment capacity, the deformation adjustment construction difficulty of the track structures in most fields is high, and the engineering solution cost is high. The existing track adjusting ways mostly adopt fastener systems to adjust, and the irregularity adjustment is mainly realized by changing the thickness of a pad plate under a track, but the adjustment amount of the fastener systems is limited, the maximum adjustment amount of the fastener systems is 26mm under the common condition, and the requirements of large adjustment amounts such as staggered layers of a movable fracture zone cannot be met. Meanwhile, when short-time sudden large deformation such as a movable fault zone dislocation, bridge longitudinal deformation and the like occurs, if corresponding track structure adjustment measures are unreasonable and untimely, the track structure is damaged in a large area, driving safety is endangered, and meanwhile, the track is influenced by construction processes and field conditions after being damaged, and huge maintenance difficulty and maintenance cost can be brought while normal operation cannot be continued.
Therefore, there is a need for a ballastless track capable of adjusting a track in a large range and adjusting the track in real time.
Disclosure of Invention
The invention aims to provide a ballastless track, and aims to solve the problem that the conventional ballastless track cannot have the functions of large-scale track adjustment and timely track adjustment.
In order to solve the technical problems, the invention provides a ballastless track which comprises a track lower foundation, a concrete column, a spring damper and a track plate, wherein the track lower foundation is fixedly connected with the concrete column, the concrete column is connected with one end of the spring damper, and the other end of the spring damper is connected with the track plate.
Optionally, the track plate assembly further comprises an embedded sleeve, the embedded sleeve is embedded in the track plate and perpendicular to the track plate, the concrete column is arranged in the embedded sleeve, and the spring damper penetrates through the wall of the embedded sleeve and is connected with the track plate.
Optionally, the track plate further comprises an embedded sleeve, the embedded sleeve is embedded in the track plate and communicated with the embedded sleeve, the spring damper is partially arranged in the embedded sleeve, and the other end of the spring damper penetrates through the wall of the embedded sleeve and is connected with the track plate.
Optionally, the embedded sleeve extends from the intersection of the embedded sleeve and the embedded sleeve to a direction far away from the foundation at the lower part of the track.
Optionally, the number of the embedded sleeves in each track slab is four, each embedded sleeve corresponds to four embedded sleeves, the four embedded sleeves are uniformly distributed around the embedded sleeve, and one spring damper is arranged in one embedded sleeve.
Optionally, one end of the spring damper is hinged to the concrete column, and the other end of the spring damper is hinged to the track plate.
Optionally, the spring damper includes steel spring, spring piston and spring sleeve, the one end setting of spring piston is in the spring sleeve, just the one end of spring piston with spring sleeve sliding connection, the other end of spring piston with the concrete column is articulated, the steel spring sets up in the spring sleeve, the one end of steel spring with the one end of spring piston is connected, the other end of steel spring with spring sleeve connection, the spring piston with the cavity intussuseption that spring sleeve encloses is filled with spring damping liquid, the spring sleeve with the track plate is articulated.
Optionally, the spring piston includes a piston main body, a first bearing outer ring, a first rolling element, a first bearing inner ring, and a first connection section, one end of the piston main body is disposed in the spring sleeve, the other end of the piston main body is fixedly connected to the first bearing outer ring, the first bearing outer ring is connected to the first bearing inner ring through the first rolling element, the first bearing inner ring is fixedly connected to the first connection section, the first connection section is provided with a first bolt hole, the concrete column is provided with a second bolt hole, the ballastless track further includes a first bolt, and the first bolt penetrates through the first bolt hole and the second bolt hole to fixedly connect the other end of the spring piston to the concrete column; the spring sleeve comprises a sleeve main body, a second bearing outer ring, a second rolling body, a second bearing inner ring and a second connecting section, the steel spring is arranged in the sleeve main body, one end of the steel spring is connected with one end of the piston main body, the other end of the steel spring is connected with the sleeve main body, the piston main body is connected with the sleeve main body in a sliding manner, a cavity defined by the piston main body and the sleeve main body is filled with spring damping liquid, the sleeve main body is fixedly connected with the second bearing outer ring, the second bearing outer ring is connected with the second bearing inner ring through the second rolling body, the second bearing inner ring is fixedly connected with the second connecting section, the second connecting section is provided with a third bolt hole, the track plate is provided with a fourth bolt hole, and the ballastless track further comprises a second bolt, and the second bolt penetrates through the third bolt hole and the fourth bolt hole to fixedly connect the spring sleeve with the track plate.
Optionally, the device further comprises a displacement sensor, and the displacement sensor is used for detecting the telescopic adjustment amount of the steel spring.
Optionally, the track further comprises a bolt backing plate, one side of the bolt backing plate is fixedly connected with the concrete column, and the other side of the bolt backing plate is fixedly connected with the lower foundation of the track.
The ballastless track provided by the invention has the following beneficial effects:
the concrete column is fixedly connected with the concrete column through a foundation at the lower part of the track, the concrete column is connected with one end of the spring damper, the other end of the spring damper is connected with the track plate so as to support the track plate through the spring damper, the spring damper provides certain rigidity to ensure that the spring damper does not generate telescopic deformation in the normal operation stage of the ballastless track, and meanwhile, the spring damper can effectively provide a buffering vibration damping effect and improve the safety and comfort level of train operation; work as during the unexpected great deformation of track lower part basis, the spring damper produces the flexible deformation of self-adaptation, and the flexible deformation of spring damper compares fastener system displacement adjustment volume and improves greatly, can effectively prevent the track board to produce great deformation along with track lower part basis, compares the big adjustment volume device of general track simultaneously, and the spring damper can produce self-adaptation deformation in the twinkling of an eye at track lower part basis deformation, makes the ballastless track has the function of track adjustment on a large scale and in good time adjustment concurrently to effectively protect track board's safety, stability when the basic deformation of self-adaptation track lower part, when guaranteeing unexpected section basis deformation, the security of train operation.
Drawings
Fig. 1 is a schematic structural diagram of a ballastless track in an embodiment of the invention;
FIG. 2 is a top view of a ballastless track in an embodiment of the present invention;
fig. 3 is an exploded schematic view of a ballastless track in an embodiment of the invention;
fig. 4 is a bottom view of a ballastless track in an embodiment of the invention;
FIG. 5 is a cross-sectional view of a ballastless track in an embodiment of the present invention;
FIG. 6 is an overall schematic view of a concrete column and spring damper in an embodiment of the invention;
FIG. 7 is an exploded view of a concrete column and spring damper in an embodiment of the present invention;
FIG. 8 is a schematic structural view of a spring damper according to an embodiment of the present invention;
FIG. 9 is a cross-sectional view of a spring damper in an embodiment of the present invention;
FIG. 10 is a partial structural view of a spring damper according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a ballastless track in the embodiment of the invention, which shows vertical deformation on a lower foundation of the track;
fig. 12 is a comparison schematic diagram of a ballastless track in an embodiment of the invention before and after vertical deformation adjustment of a lower foundation of the track;
fig. 13 is a schematic structural diagram of a ballastless track in an embodiment of the invention, which shows longitudinal deformation of a lower foundation of the track;
fig. 14 is a schematic structural diagram of a ballastless track in an embodiment of the invention, which generates transverse deformation on a lower foundation of the track;
fig. 15 is a comparison between a ballastless track of an embodiment of the present invention before and after longitudinal deformation adjustment of a lower foundation of the track;
fig. 16 is a comparison diagram of a ballastless track in an embodiment of the invention before and after adjustment for generating lateral deformation on a track lower foundation.
Description of reference numerals:
110-track lower base; 120-a column of concrete; 130-a spring damper; 131-a steel spring; 132-a spring piston; 133-a spring sleeve; 140-a track slab; 141-embedding a sleeve; 142-embedding a sleeve; 150-bolt backing plate; 160-rail bearing platform; 170-displacement sensor; 180-insulating waterproof cover plate.
Detailed Description
The ballastless track proposed by the invention is further described in detail with reference to the attached drawings and the specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
The embodiment provides a ballastless track. Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 7, fig. 1 is a schematic structural diagram of a ballastless track in an embodiment of the present invention, fig. 2 is a top view of the ballastless track in the embodiment of the present invention, fig. 3 is an exploded schematic view of the ballastless track in the embodiment of the present invention, fig. 4 is a bottom view of the ballastless track in the embodiment of the present invention, fig. 5 is a cross-sectional view of the ballastless track in the embodiment of the present invention, fig. 6 is an overall schematic view of a concrete column 120 and a spring damper 130 in the embodiment of the present invention, fig. 7 is an exploded schematic view of the concrete column 120 and the spring damper 130 in the embodiment of the present invention, the ballastless track includes a track lower foundation 110, a concrete column 120, the spring damper 130 and a track plate 140, the track lower foundation 110 is fixedly connected to, the other end of the spring damper 130 is connected to the rail plate 140.
The concrete column 120 is fixedly connected with the concrete column 120 through the track lower foundation 110, the concrete column 120 is connected with one end of the spring damper 130, the other end of the spring damper 130 is connected with the track slab 140 to support the track slab 140 through the spring damper 130, and the spring damper 130 provides certain rigidity to ensure that the spring damper 130 does not generate telescopic deformation in a normal operation stage of the ballastless track, and meanwhile, the spring damper 130 can effectively provide a buffering and vibration damping effect and improve the safety and comfort level of train operation; when track lower part basis 110 is proruption greatly warp, spring damper 130 produces the flexible deformation of self-adaptation, and the flexible deformation of spring damper 130 is compared fastener system displacement adjustment volume and is improved greatly, can effectively prevent track board 140 to produce great deformation along with track lower part basis 110, compares general track large adjustment volume device simultaneously, and spring damper 130 can produce the self-adaptation in the twinkling of an eye at track lower part basis 110 deformation and warp, makes the ballastless track has the function of track adjustment on a large scale and in good time adjustment concurrently to effectively protect track board 140's safety, stability when self-adaptation track lower part basis 110 warp, when guaranteeing proruption section basis deformation, the security of train operation.
In this embodiment, the track plate 140 is located above the track lower base 110.
The ballastless track further comprises an embedded sleeve 141, the embedded sleeve 141 is embedded in the track slab 140 and is perpendicular to the track slab 140, and the concrete column 120 is arranged in the embedded sleeve 141. The spring damper 130 penetrates through the wall of the embedded sleeve 141 to be connected with the track plate 140, so that stress concentration at the connection position of the spring damper 130 and the track plate 140 can be avoided. Wherein, sufficient space should be reserved in order to facilitate field installation and later stage operation maintenance to pre-buried sleeve 141.
The ballastless track further comprises an embedded sleeve 142, the embedded sleeve 142 is embedded in the track slab 140 and is communicated with the embedded sleeve 141, the spring damper 130 is partially arranged in the embedded sleeve 142, and the other end of the spring damper 130 penetrates through the pipe wall of the embedded sleeve 142 to be connected with the track slab 140. Through the interaction of the embedded sleeve 142 and the embedded sleeve 141, the stress concentration at the connection part of the spring damper 130 and the track plate 140 can be avoided.
As shown in fig. 5, the fastener sleeve 142 extends from the intersection of the fastener sleeve 142 and the fastener sleeve 141 in a direction away from the track lower base 110. In this way, stress concentration at the connection between the spring damper 130 and the rail plate 140 can be avoided.
In this embodiment, the number of the embedded sleeves 141 in each track plate 140 is four, each embedded sleeve 141 corresponds to four embedded sleeves 142, the four embedded sleeves 142 are uniformly distributed around the embedded sleeves 142, and one spring damper 130 is arranged in one embedded sleeve 141, so that the track can be adjusted in a large range in two mutually perpendicular directions.
The embedded sleeve 141 and the embedded sleeve 142 are stainless steel pipes.
Preferably, one end of the spring damper 130 is hinged to the concrete column 120, and the other end of the spring damper 130 is hinged to the track plate 140, so that when the spring damper 130 in one direction is deformed in a stretching manner, deformation of the ballastless track in other directions is not caused.
Specifically, fig. 8 and 9, fig. 8 is a schematic structural view of the spring damper 130 in the embodiment of the present invention, fig. 9 is a sectional view of a spring damper 130 according to an embodiment of the present invention, the spring damper 130 including a steel spring 131, a spring piston 132, and a spring sleeve 133, one end of the spring piston 132 being disposed within the spring sleeve 133, one end of the spring piston 132 is slidably connected to the spring sleeve 133, the other end of the spring piston 132 is hinged to the concrete column 120, the steel spring 131 is disposed in the spring sleeve 133, one end of the steel spring 131 is connected to one end of the spring piston 132, the other end of the steel spring 131 is connected with the spring sleeve 133, a cavity enclosed by the spring piston 132 and the spring sleeve 133 is filled with spring damping fluid, and the spring sleeve 133 is hinged with the track plate 140. Steel spring 131 and spring damping liquid provide certain spring rate among spring damper 130 and guarantee that track structure is in normal operation stage, and steel spring 131 does not produce flexible deformation, can effectively provide buffering damping effect simultaneously, improves the security and the comfort level of train operation. When the track lower part foundation 110 of the ballastless track is suddenly deformed greatly, the spring damper 130 generates self-adaptive internal steel spring 131 stretching deformation, so that the track structure is ensured not to generate large deformation along with the lower part foundation, the damping liquid can effectively buffer the impact effect of the deformation of the lower part foundation structure, and the safety and stability of the track structure are protected.
Specifically, referring to fig. 10, fig. 10 is a partial structural view of the spring damper 130 in the embodiment of the present invention, the spring piston 132 includes a piston main body, a first bearing outer race, a first rolling body, a first bearing inner race, and a first connecting section, one end of the piston main body is arranged in the spring sleeve 133, the other end of the piston main body is fixedly connected with the first bearing outer ring, the first bearing outer ring is connected with the first bearing inner ring through the first rolling body, the first bearing inner ring is fixedly connected with the first connecting section, the first connecting section is provided with a first bolt hole, the concrete column 120 is provided with a second bolt hole, the ballastless track further comprises a first bolt, and the first bolt penetrates through the first bolt hole and the second bolt hole to fixedly connect the other end of the spring piston 132 with the concrete column 120.
The spring sleeve 133 includes a sleeve main body, a second bearing outer ring, a second rolling body, a second bearing inner ring, and a second connection section. The steel spring 131 is arranged in the sleeve main body, one end of the steel spring 131 is connected with one end of the piston main body, the other end of the steel spring 131 is connected with the sleeve main body, the piston main body is connected with the sleeve main body in a sliding way, a cavity enclosed by the piston main body and the sleeve main body is filled with spring damping liquid, the sleeve main body is fixedly connected with the outer ring of the second bearing, the second bearing outer ring is connected with the second bearing inner ring through the second rolling body, the second bearing inner ring is fixedly connected with the second connecting section, a third bolt hole is formed on the second connecting section, a fourth bolt hole is formed on the track plate 140, the ballastless track further comprises a second bolt, and the second bolt penetrates through the third bolt hole and the fourth bolt hole to fixedly connect the spring sleeve 133 with the track plate 140.
The concrete column 120 is formed by prefabrication. When prefabrication is carried out, concrete can be poured through the steel pipe for forming. In other embodiments, the concrete column 120 may be formed by cast-in-place.
Specifically, the concrete column 120 has four rectangular mounting surfaces, the mounting surfaces and the vertical direction have a certain included angle, and the second bolt hole is formed in the mounting surfaces.
The ballastless track further comprises a bolt base plate 150, one side of the bolt base plate 150 is fixedly connected with the concrete column 120, and the other side of the bolt base plate 150 is fixedly connected with the track lower foundation 110.
As shown in fig. 5 and 6, the bolt plate 150 has an L-shape.
The ballastless track further comprises a rail bearing platform 160, and the rail bearing platform 160 is arranged on the track plate 140 and is used for supporting a steel rail.
The ballastless track further comprises a displacement sensor 170, and the displacement sensor 170 is used for detecting the telescopic adjustment amount of the steel spring 131. When the accumulated deformation of the track lower foundation 110 exceeds the maximum telescopic adjustment amount of the steel spring 131, the spring damper 130 is taken out, the concrete column 120 is replaced, the concrete column 120 is installed at the corresponding position of the embedded sleeve 141 again, and a new spring damper 130 is correspondingly installed.
The ballastless track further comprises an insulating waterproof cover plate 180, wherein the insulating waterproof cover plate 180 is arranged above the embedded sleeve 141 and used for protecting the spring damper 130 and the displacement sensor 170 inside the embedded sleeve 141.
During construction, the track plate 140 and the concrete column 120 may be prefabricated in a factory, a second bolt hole is reserved in the concrete column 120, the track plate 140 is provided with the embedded sleeve 141 and the embedded sleeve 142, and a fourth bolt hole is reserved in the embedded sleeve 142. Then, when the concrete column 120 is installed on the track lower foundation 110 through the bolt backing plate 150, the track plate 140 is lifted up through the hydraulic jack, the spring dampers 130 are installed in the embedded sleeves 141 and the embedded sleeves 142, the spring dampers 130 are fixedly connected with the concrete column 120, and after all the spring dampers 130 are installed, the jack is taken down, and the track plate 140 is supported by the spring dampers 130.
When the accumulated deformation of the track lower foundation 110 approaches the maximum expansion adjustment amount of the spring damper 130, the track plate 140 is lifted by using a jack and the like, the first bolt and the second bolt are unscrewed and taken out, the spring damper 130 is taken out, the track plate 140 is removed, the concrete column 120 on the track lower foundation 110 is dismounted, the concrete column is mounted at the position corresponding to the embedded sleeve 141 of the track plate 140 again, the track plate 140 is hoisted again, and a new spring damper is mounted. In the whole maintenance and treatment process, the track plate 140 does not need to be chiseled, the construction is rapid and convenient, and the efficiency of on-site maintenance and construction of the engineering department is greatly improved.
When the roadbed is subjected to settlement deformation and the movable fault zone is staggered, the lower foundation 110 of the track is easy to deform vertically, longitudinally and transversely. The smoothness of the track slab 140 structure is good before the track lower foundation 110 deforms, and after the track lower foundation 110 deforms vertically, longitudinally and transversely, the track slab 140 structure is damaged, the smoothness of the track is affected, and the track needs to be adjusted to adapt to the deformation of the lower foundation, so that the smoothness of the track is guaranteed.
Referring to fig. 11 and 12, fig. 11 is a schematic structural diagram of a ballastless track in an embodiment of the present invention, where the ballastless track generates vertical deformation on a track lower foundation 110, fig. 12 is a schematic comparison diagram of the ballastless track before and after the vertical deformation of the track lower foundation 110 in the embodiment of the present invention is adjusted, when vertical deformation such as a movable fault zone dislocation occurs, the ballastless track generates a large adjustment amount (refer to fig. 11 and 12), at this time, a concrete column 120 sinks along with the track lower foundation 110, and a spring damper 130 installed at a corresponding position starts to generate a self-adaptive telescopic displacement (refer to fig. 12), so as to reduce the influence of the deformation of the lower foundation on the track slab 140 structure, and ensure track smoothness and driving safety.
Referring to fig. 13, 14, 15 and 16, fig. 13 is a schematic structural diagram of a ballastless track in an embodiment of the present invention that generates longitudinal deformation in a track lower foundation 110, fig. 14 is a schematic structural diagram of a ballastless track in an embodiment of the present invention that generates transverse deformation in the track lower foundation 110, fig. 15 is a schematic comparison diagram of the ballastless track in an embodiment of the present invention before and after longitudinal deformation adjustment is generated in the track lower foundation 110, fig. 16 is a schematic comparison diagram of the ballastless track in an embodiment of the present invention before and after transverse deformation adjustment is generated in the track lower foundation 110, and when longitudinal and transverse deformation such as a movable fracture zone dislocation occurs, the ballastless track structure generates a large horizontal adjustment amount (fig. 13 and 14). At this time, the concrete column 120 is displaced longitudinally and transversely along with the lower foundation 110 of the track, and the steel spring 131 mounted at the corresponding position begins to generate self-adaptive horizontal telescopic displacement (fig. 15 and 16), so that the self-adaptation to the deformation of the lower foundation is effectively realized, the influence of the deformation of the lower foundation on the track slab 140 is reduced, and the smoothness of the track and the driving safety are ensured.
Compared with the prior art, the invention has the following advantages:
firstly, the track plate 140 and the concrete column 120 in the ballastless track can be prefabricated in a factory, the production and installation quality is high, the spring damper 130 is convenient to replace, and the maintenance efficiency can be improved.
Secondly, the spring damper 130 has large vertical, horizontal and longitudinal displacement adjustment amount, and can adapt to large deformation of the rail lower foundation 110 in each direction, thereby ensuring good geometric configuration of the rail structure.
And thirdly, the limiting spring damper 130 is internally provided with spring damping liquid, so that a buffering and vibration damping effect is provided when the track structure is in a normal operation stage and the track lower part foundation 110 is deformed, and the driving safety and comfort are improved.
And thirdly, the displacement sensor 170 is arranged at the steel spring 131 in the spring damper 130, so that the displacement expansion amount of the steel spring 131 can be transmitted in real time, and the working efficiency in the operation and maintenance stage is effectively improved.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (10)
1. The ballastless track is characterized by comprising a track lower foundation, a concrete column, a spring damper and a track plate, wherein the track lower foundation is fixedly connected with the concrete column, the concrete column is connected with one end of the spring damper, and the other end of the spring damper is connected with the track plate.
2. The ballastless track of claim 1, further comprising an embedded sleeve, wherein the embedded sleeve is embedded in the track slab and arranged perpendicular to the track slab, the concrete column is arranged in the embedded sleeve, and the spring damper passes through a wall of the embedded sleeve and is connected with the track slab.
3. The ballastless track of claim 2, further comprising an embedded sleeve, wherein the embedded sleeve is embedded in the track slab and is communicated with the embedded sleeve, the spring damper is partially disposed in the embedded sleeve, and the other end of the spring damper penetrates through a pipe wall of the embedded sleeve to be connected with the track slab.
4. The ballastless track of claim 3, wherein the embedment sleeve extends from an intersection of the embedment sleeve and the embedment sleeve in a direction away from a lower foundation of the track.
5. The ballastless track of claim 3, wherein the number of the embedded sleeves in each track slab is four, each embedded sleeve corresponds to four embedded sleeves, the four embedded sleeves are uniformly distributed around the embedded sleeves, and one spring damper is arranged in one embedded sleeve.
6. The ballastless track of claim 1, wherein one end of the spring damper is hinged to the concrete column, and the other end of the spring damper is hinged to the track slab.
7. The ballastless track of claim 1, wherein the spring damper comprises a steel spring, a spring piston and a spring sleeve, one end of the spring piston is disposed in the spring sleeve, one end of the spring piston is slidably connected with the spring sleeve, the other end of the spring piston is hinged to the concrete column, the steel spring is disposed in the spring sleeve, one end of the steel spring is connected with one end of the spring piston, the other end of the steel spring is connected with the spring sleeve, a cavity enclosed by the spring piston and the spring sleeve is filled with spring damping fluid, and the spring sleeve is hinged to the track plate.
8. The ballastless track of claim 7, wherein the spring piston comprises a piston main body, a first bearing outer ring, a first rolling element, a first bearing inner ring and a first connecting section, one end of the piston main body is arranged in the spring sleeve, the other end of the piston main body is fixedly connected with the first bearing outer ring, the first bearing outer ring is connected with the first bearing inner ring through the first rolling element, the first bearing inner ring is fixedly connected with the first connecting section, the first connecting section is provided with a first bolt hole, the concrete column is provided with a second bolt hole, the ballastless track further comprises a first bolt, and the first bolt penetrates through the first bolt hole and the second bolt hole to fixedly connect the other end of the spring piston with the concrete column;
the spring sleeve comprises a sleeve main body, a second bearing outer ring, a second rolling body, a second bearing inner ring and a second connecting section, the steel spring is arranged in the sleeve main body, one end of the steel spring is connected with one end of the piston main body, the other end of the steel spring is connected with the sleeve main body, the piston main body is connected with the sleeve main body in a sliding manner, a cavity defined by the piston main body and the sleeve main body is filled with spring damping liquid, the sleeve main body is fixedly connected with the second bearing outer ring, the second bearing outer ring is connected with the second bearing inner ring through the second rolling body, the second bearing inner ring is fixedly connected with the second connecting section, the second connecting section is provided with a third bolt hole, the track plate is provided with a fourth bolt hole, and the ballastless track further comprises a second bolt, and the second bolt penetrates through the third bolt hole and the fourth bolt hole to fixedly connect the spring sleeve with the track plate.
9. The ballastless track of claim 7, further comprising a displacement sensor for detecting a telescopic adjustment amount of the steel spring.
10. The ballastless track of claim 1, further comprising a bolt backing plate, wherein one side of the bolt backing plate is fixedly connected with the concrete column, and the other side of the bolt backing plate is fixedly connected with the lower foundation of the track.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011423219.4A CN112501956A (en) | 2020-12-08 | 2020-12-08 | Ballastless track |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011423219.4A CN112501956A (en) | 2020-12-08 | 2020-12-08 | Ballastless track |
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| Publication Number | Publication Date |
|---|---|
| CN112501956A true CN112501956A (en) | 2021-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011423219.4A Pending CN112501956A (en) | 2020-12-08 | 2020-12-08 | Ballastless track |
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| CN (1) | CN112501956A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114214876A (en) * | 2021-09-02 | 2022-03-22 | 中铁二院工程集团有限责任公司 | Earthquake-resistant ballastless track structure |
-
2020
- 2020-12-08 CN CN202011423219.4A patent/CN112501956A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114214876A (en) * | 2021-09-02 | 2022-03-22 | 中铁二院工程集团有限责任公司 | Earthquake-resistant ballastless track structure |
| CN114214876B (en) * | 2021-09-02 | 2023-06-02 | 中铁二院工程集团有限责任公司 | Anti-seismic ballastless track structure |
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