CN110792033B - Displacement telescopic device for railway bridge - Google Patents
Displacement telescopic device for railway bridge Download PDFInfo
- Publication number
- CN110792033B CN110792033B CN201910893433.7A CN201910893433A CN110792033B CN 110792033 B CN110792033 B CN 110792033B CN 201910893433 A CN201910893433 A CN 201910893433A CN 110792033 B CN110792033 B CN 110792033B
- Authority
- CN
- China
- Prior art keywords
- movable
- steel sleeper
- fixed
- movable steel
- box body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
- E01D19/065—Joints having sliding plates
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a displacement telescopic device for a railway bridge, which comprises: a plurality of fixed steel sleepers respectively arranged on the adjacent railway bridges; the supporting beams are arranged on the fixed steel sleepers in a sliding connection mode; the first movable steel sleeper is arranged between the fixed steel sleepers, two second movable steel sleepers are arranged between the first movable steel sleeper and the fixed steel sleepers, and the first movable steel sleeper and the second movable steel sleepers are in sliding connection with the supporting beam; the telescopic mechanism comprises a fixed box body fixedly connected with the first movable steel sleeper, a movable box body fixedly connected with the second movable steel sleeper and a screw rod for connecting the fixed box body and the movable box body; the telescopic mechanism is constructed to enable the movable box bodies on the two sides of the fixed box body to synchronously move towards or away from the fixed box body at equal intervals through the screw rod so as to drive the two second movable steel sleepers to synchronously move and keep the same distance with the first movable steel sleepers, and therefore the telescopic mechanism is adapted to the change of the expansion joint of the railway bridge.
Description
Technical Field
The invention relates to the technical field of railway bridges, in particular to a displacement telescopic device for a railway bridge.
Background
In the railway bridge construction project, a gap exists between adjacent railway bridges. In the operation process, the railway bridge is influenced by external environments such as thermal expansion and cold contraction to cause the phenomena of expansion or contraction of the beam body structure. Therefore, in the process of constructing the railroad bridge, a beam end expansion device of the railroad bridge is usually arranged at a beam joint of the railroad bridge so as to ensure the reliable transition and support of the steel rail at the adjacent bridge gap. Because the beam end expansion device of the railway bridge is arranged at the beam seam of the bridge, the requirement on the performance of the beam end expansion device of the railway bridge is high. For example, railroad bridge beam end retractors must be able to accommodate the angular deformation and beam end displacement deformation of railroad bridge beam structures, have good stiffness and strength to withstand all applied loads, have adequate support stiffness to keep the track stiffness at the retractor close to or consistent with the stiffness on the bridge or on the road bed to improve ride comfort, etc.
At present, bridge displacement expansion devices with various structures are arranged in railway bridge construction engineering. However, the existing railway bridge displacement telescopic devices still have some problems. For example, the existing large-displacement beam end expansion device has many structural components, the components are mutually related, the requirements on production and assembly precision are high, factory assembly and integral transportation to a construction site are generally required, the installation and construction efficiency is low, and the personnel cost and the transportation cost are high. And, the railroad bridge telescoping device does not possess the regulatory function to the horizontal position and the elevation of circuit, can't satisfy the requirement of circuit ride comfort, and the structural bearing capacity of telescoping device is less, and the security performance is relatively poor when it is used for the railroad bridge of big displacement, heavy load. The railway bridge expansion device has higher requirements on elevation control and line laying precision of the installation position, and is not beneficial to construction and later-stage inspection and maintenance. In addition, the railway bridge expansion device in the prior art usually adopts the connecting rod connection structure to realize stretching, and the mounting height of the connecting rod structure can exceed the steel sleeper, and the expansion device can be caused to change the shape in the vertical height space in the stretching process, so that the hidden danger of the train operation safety caused by the fault of the expansion device is increased.
Disclosure of Invention
In view of the above technical problems, the present invention is directed to a displacement telescopic device for a railroad bridge, which is capable of adapting to large displacement telescopic deformation of a railroad bridge and ensuring that the height of the displacement telescopic device does not change when the structure of the displacement telescopic device is damaged, so as to avoid the influence on a train and improve the safety performance of the displacement telescopic device. Meanwhile, the displacement telescopic device can obviously improve the reliability and stability of the relative motion between the movable steel sleeper and the fixed steel sleeper.
To this end, according to the present invention, a displacement telescopic device for railroad bridges is proposed, comprising: a plurality of fixed steel sleepers respectively arranged on the adjacent railway bridges; the supporting beam is arranged on the fixed steel sleeper in a sliding connection manner; the first movable steel sleeper is arranged between the fixed steel sleepers and connected to the lower end of the support beam, two second movable steel sleepers are symmetrically arranged on two sides of the first movable steel sleeper and between the fixed steel sleepers, and the first movable steel sleeper and the second movable steel sleepers are in sliding connection with the support beam; the telescopic mechanisms are symmetrically arranged on the two transverse sides of the supporting beam and comprise a fixed box body fixedly connected with the first movable steel sleeper, a movable box body fixedly connected with the second movable steel sleeper and a screw rod for connecting the fixed box body and the movable box body; the telescopic mechanism is constructed to enable the movable box bodies on the two sides of the fixed box body to synchronously move towards or away from the fixed box body at equal intervals through the screw rod so as to drive the two second movable steel sleepers to synchronously move and keep the same distance with the first movable steel sleepers, and therefore the telescopic mechanism is adapted to the change of the expansion joint of the railway bridge.
In a preferred embodiment, a mounting part is arranged in the middle of the screw rod, and the mounting part penetrates through the fixed box body through a bearing to be mounted, so that the screw rod and the fixed box body are in rotary connection.
In a preferred embodiment, two end parts of the screw rod are respectively provided with threads, and the screw rod is connected with the movable box body in a threaded connection mode.
In a preferred embodiment, the threads at the two ends of the screw rod are oppositely and symmetrically arranged, so that the threads at the two ends of the screw rod can rotate at the same angle, and the movable boxes at the two sides of the fixed box move towards or away from the fixed box synchronously and equidistantly.
In a preferred embodiment, the screw has a thread inclination angle larger than a thread self-locking angle, so that the screw can be pushed to rotate under the expansion and contraction action of the expansion joint of the railroad bridge.
In a preferred embodiment, the fixed steel sleeper, the first movable steel sleeper and the second movable steel sleeper are in sliding connection with the support beam through a sliding block mechanism.
In a preferred embodiment, the slider mechanism comprises two slider bodies of identical construction, which are L-shaped.
In a preferred embodiment, the cross section of the support beam is configured to be i-shaped, and the support beam comprises an upper support plate, a lower support plate with a thickness smaller than that of the upper support plate, and a connecting plate for connecting the upper support plate and the lower support plate, wherein the clamping groove is arranged on the lower end surface of the lower support plate.
In a preferred embodiment, the two sliding block bodies are relatively and fixedly mounted on the fixed steel sleeper so as to form a clamping portion between the two sliding block bodies, and the lower supporting plate of the supporting beam is fittingly mounted in the clamping portion and can relatively slide.
In a preferred embodiment, a guiding smooth member is arranged between the supporting beam and the clamping part, so that the fixed steel sleeper, the first movable steel sleeper and the second movable steel sleeper are in sliding connection with the supporting beam.
Compared with the prior art, the displacement telescoping device for the railway bridge has the advantages that:
the displacement expansion device for the railway bridge can be suitable for large displacement expansion deformation of the railway bridge, and the expansion mechanism of the displacement expansion device is in symmetrical threaded connection, so that the movable steel sleepers can synchronously move at equal intervals to adapt to expansion and contraction of a bridge body, the steel sleepers are centered, and the stability and reliability of relative movement between the movable steel sleepers and the fixed steel sleepers of the displacement expansion device are obviously improved. Telescopic machanism passes through screw rod threaded connection and realizes concertina movement, and its mounting height does not exceed the steel sleeper, has reduced the demand to installation space, and can not lead to the change that the displacement telescoping device takes place the shape on vertical high space taking place flexible in-process, has reduced because of the displacement telescoping device produces the trouble and leads to the hidden danger to train operation safety, has improved displacement telescoping device's security performance. In addition, the displacement telescoping device has the advantages of simple structure, uniform stress, easy maintenance and smooth telescopic motion while ensuring the stable passing of the train.
Drawings
The invention will now be described with reference to the accompanying drawings.
Fig. 1 schematically shows a perspective structure of a displacement telescopic device for railroad bridges according to the present invention.
Fig. 2 is a plan view of a displacement telescopic device for railroad bridges according to the present invention.
Fig. 3 shows the connection and installation manner between the slider mechanism and the fixed steel sleeper and between the slider mechanism and the movable steel sleeper in the displacement telescopic device shown in fig. 1.
In the present application, the drawings are all schematic and are used only for illustrating the principles of the invention and are not drawn to scale.
Detailed Description
The invention is described below with reference to the accompanying drawings.
In the present application, the extending direction of the track along the railroad bridge (horizontal direction in fig. 2) is defined as a longitudinal direction, and the extending direction of the track perpendicular to the railroad bridge (vertical direction in fig. 2) is defined as a lateral direction.
Fig. 1 and 2 together show the structure of a displacement telescopic device 100 for railroad bridges according to the present invention. As shown in fig. 1 and 2, the displacement telescopic device 100 includes a plurality of fixed steel sleepers 10 disposed on adjacent railroad bridges. The fixed steel sleeper 10 is used for being fixedly connected with the adjacent railway bridge beam end to install the displacement telescopic device 100. In the embodiment shown in fig. 1, the displacement telescopic device 100 comprises 4 symmetrically arranged fixed steel sleepers 10.
According to the invention, the fixed steel sleeper 10 is provided with mutually parallel and spaced apart rest beams 20. In the embodiment shown in fig. 2, 2 support beams 20 are arranged in parallel on the fixed steel sleeper 10. The support beam 20 is perpendicular to the fixed steel sleeper 10, and the support beam 20 and the fixed steel sleeper 10 are connected in a sliding connection mode. In one embodiment, the sectional shape of the rest beam 20 is configured in an i-shape, and the rest beam 20 includes an upper support plate 21 (see fig. 3) and a lower support plate 22, with a connection plate 23 connected between the upper support plate 21 and the lower support plate 22. The thickness of the lower support plate 22 is set smaller than that of the upper support plate 21. In one embodiment, the two ends of the fixed steel sleeper 10 are respectively connected with the two supporting beams 20 arranged in parallel in a sliding mode through the sliding block mechanism 60. Thereby, the fixed steel sleeper 10 and the bracket beam 20 can slide relative to each other.
Fig. 3 shows the connection mounting structure between the slider mechanism 60 and the fixed steel sleeper 10. As shown in fig. 3, the slider mechanism 60 includes two slider bodies 61. The sliding block body 61 is constructed into an L shape, and two relative fixed mounting are on the fixed steel sleeper 10, thereby forming a clamping part between the sliding block bodies 61 of the two L shapes, and the clamping part is used for clamping and connecting the supporting beam 20. In one embodiment, the slider body is fixedly connected to the fixed steel sleeper 10 by a bolt fixing assembly. When the slider mechanism 60 is installed, the lower support plate 22 of the support bracket 20 is fitted into the engagement portion of the slider mechanism 60. In one embodiment, a guiding smooth member 62 is provided between the fixed steel sleeper 10 and the clamping portion of the slider mechanism 60. Therefore, the fixed steel sleeper 10 is in sliding connection with the support beam 20 through the sliding block mechanism 60, and the fixed steel sleeper is connected below the support beam 20 to support the support beam.
According to the present invention, the displacement telescopic device 100 further includes a first movable steel sleeper 30 disposed at a middle position of the fixed steel sleeper 10 fixedly connected to the adjacent end of the railway bridge, and the first movable steel sleeper 30 is connected to the lower end of the rest beam 20. The first movable steel sleeper 30 is connected with the support beam 20 in a sliding way. In one embodiment, the two ends of the first movable steel sleeper 30 are slidably connected with the parallel-arranged support beams 20 by a sliding block mechanism 60. Thus, the first movable steel sleeper 30 and the support girder 20 can slide relative to each other, and the first movable steel sleeper 30 is hung below the support girder 20. The connection between the first movable steel sleeper 30 and the support beam 20 is the same as the connection between the fixed steel sleeper 10 and the support beam 20, and the detailed description thereof is omitted.
As shown in fig. 1 and 2, second movable steel sleepers 40 are symmetrically disposed on both sides of the first movable steel sleeper 30, and the second movable steel sleepers 40 are located between the first movable steel sleeper 30 and the fixed steel sleeper 10. Similarly, a second movable steel sleeper 40 is also attached to the lower end of the joist 20. The second movable steel sleeper 40 is connected with the support beam 20 in a sliding way. In one embodiment, the two ends of the second movable steel sleeper 40 are slidably connected with the parallel-arranged support beams 20 by a sliding block mechanism 60. Thereby, the second movable steel sleeper 40 and the rest beam 20 can slide relative to each other. The connection mode between the second movable steel sleeper 40 and the support beam 20 is the same as that between the fixed steel sleeper 10 and the support beam 20, and the detailed description is omitted here.
In the practical application process, the first movable steel sleeper 30, the second movable steel sleeper 40 and the support beam 20 can slide relatively under the expansion and contraction action of the expansion joint of the railway bridge, so that the change of the expansion joint of the railway bridge is adapted, the structural change of the railway bridge is adapted, and the reliability and the stability of the railway bridge are obviously enhanced.
According to the present invention, the displacement telescopic device 100 further comprises a telescopic mechanism 50. As shown in fig. 1 and 2, the telescopic mechanisms 50 are symmetrically disposed at both lateral sides of the rest beam 20. The telescoping mechanism 50 includes a fixed box 51 fixedly connected to the end of the first movable steel sleeper 30. The telescoping mechanism 50 further comprises two movable box bodies 52, and the movable box bodies 52 are respectively and fixedly connected with the end portions of the second movable steel sleepers 40. In one embodiment, the fixed box 51 and the movable box body 52 are fixedly connected with the first movable steel sleeper 30 and the second movable steel sleeper respectively through bolt fixing assemblies. The fixed case 51 and the movable case 52 are connected by a screw 53. The screw 53 is configured to enable the movable box bodies 52 on both sides of the fixed box body 51 to synchronously and equidistantly move towards or away from the fixed box body 51 so as to drive the two second movable steel sleepers 40 to synchronously move and keep the same distance with the first movable steel sleeper 30, thereby adapting to the change of the expansion joint of the railroad bridge and ensuring the reliability and the stability of the railroad bridge.
In this embodiment, the middle portion of the screw 53 is configured as a polish rod and is rotatably connected to the stationary housing 51 by a bearing. The stationary case 51 is provided with a through-hole (not shown) through which the screw 53 passes, and the middle portion of the screw 53 is mounted in the through-hole through a bearing, thereby forming a rotational connection with the stationary case 51. The two end portions of the screw 53 are provided with external threads, the movable box 52 is provided with a mounting hole penetrating through the movable box 52, and the mounting hole is internally provided with internal threads. The external threads of both end portions of the screw 53 are engaged with the internal threads in the mounting hole of the movable case 52, thereby forming a threaded connection.
According to the present invention, the screw threads of the two end portions of the screw 53 are arranged in opposite directions and symmetrically with respect to the middle portion. For example, in the embodiment shown in FIG. 1, the left end of the screw 53 is provided with a right-hand thread and the right end of the screw 53 is provided with a left-hand thread. Therefore, the threads at the two ends of the screw 53 can be ensured to rotate at the same angle, so that the movable boxes 52 at the two sides of the fixed box 51 synchronously move towards or away from the fixed box 51 at equal intervals, and the distance between the two symmetrical second movable steel sleepers 40 and the first movable steel sleeper 30 in the middle is ensured to be consistent.
In the present embodiment, the threads at both ends of the screw 53 are set so that the thread inclination angle is larger than the thread self-locking angle. Therefore, when the railway bridge girder expands and contracts due to heat and cold, the second movable steel sleeper 40 on one side of the first movable steel sleeper 30 can be moved by the expansion pressure, so that the movable box 52 on one side of the fixed box 51 in the telescopic mechanism 50 is driven to move, and the screw 53 is pushed to rotate by the thread on one end of the screw 53. Thereby, the screw thread of the other end of the driving screw 53 is rotated at the same angle, and the second movable steel sleeper 40 at the other side of the first movable steel sleeper 30 is driven to move toward or away from the first movable steel sleeper 30 synchronously and equidistantly by the movable box 52 at the other side of the fixed box 51.
The operation of the displacement telescopic device 100 for railroad bridges according to the present invention is briefly described as follows. In a normal application state of the displacement telescopic device 100, the fixed steel sleeper 10 is fixedly connected to the bridge beam bodies at two adjacent ends, and the supporting beam 20 is slidably connected with the fixed steel sleeper 10 through the slider mechanism 60, so that the fixed steel sleeper 10 supports the supporting beam 20. When the adjacent beam bodies are displaced and stretched, the fixed steel sleeper 10 and the supporting beam 20 form relative sliding through the slider mechanism 60 to adjust the relative displacement between the adjacent beam bodies so as to adapt to the displacement and stretching between the beam bodies. When the temperature of the beam changes and the joint of the beam expands with heat and contracts with cold, the second movable steel sleeper 40 on one side of the first movable steel sleeper moves telescopically along the extending direction of the support beam 20 and drives the movable box bodies 52 connected to the two ends of the second movable steel sleeper 40 to move synchronously. In this process, the second movable steel sleeper 40 pushes the screw 53 to rotate, so that the second movable steel sleeper 40 on the other side of the first movable steel sleeper simultaneously generates telescopic motion along the extending direction of the support beam 20. From this, two second activity steel sleepers of first activity steel sleeper bilateral symmetry keep away from in step or are close to first activity steel sleeper to guaranteed that the interval of the relative middle first activity steel sleeper 30 of two second activity steel sleepers 40 keeps unanimous, and through threaded connection, guaranteed the synchronous motion's of second activity steel sleeper 40 reliability and stability, strengthened the concertina movement's of telescoping device 100 reliability and stability.
The displacement expansion device 100 for the railway bridge can be suitable for large displacement expansion deformation of the railway bridge, and the expansion mechanism of the displacement expansion device 100 adopts symmetrical threaded connection, so that the movable steel sleepers can synchronously move at equal intervals to adapt to expansion and contraction of a bridge body, the uniform clearance of the steel sleepers is ensured, and the stability and reliability of relative movement between the movable steel sleepers and the fixed steel sleepers of the displacement expansion device 100 are obviously improved. Telescopic machanism passes through screw rod threaded connection and realizes concertina movement, and its mounting height does not exceed the steel sleeper, has reduced the demand to installation space, and can not lead to displacement telescoping device 100 to take place the change of shape on vertical altitude space taking place flexible in-process, has reduced because of displacement telescoping device 100 produces the trouble and leads to the hidden danger to train operation safety, has improved displacement telescoping device 100's security performance. In addition, the displacement telescopic device 100 is simple in structure, even in stress, easy to overhaul and maintain, and smooth in telescopic motion while guaranteeing that a train stably passes through.
Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and do not limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing examples, or that equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A displacement telescopic device for railroad bridges, comprising:
a plurality of fixed steel sleepers (10) respectively arranged on the adjacent railway bridges;
a support beam (20) arranged on the fixed steel sleeper in a sliding connection manner;
the first movable steel sleeper (30) is arranged between the fixed steel sleepers and connected to the lower end of the support beam, two second movable steel sleepers (40) are symmetrically arranged on two sides of the first movable steel sleeper and between the fixed steel sleepers, and the first movable steel sleeper and the second movable steel sleepers are in sliding connection with the support beam; and
the telescopic mechanisms (50) are symmetrically arranged on the two transverse sides of the supporting beam and comprise a fixed box body (51) fixedly connected with the first movable steel sleeper, a movable box body (52) fixedly connected with the second movable steel sleeper and a screw rod (53) for connecting the fixed box body and the movable box body;
the two end parts of the screw rod are respectively provided with threads, the screw rod is connected with the movable box body in a threaded connection mode, the threads at the two ends of the screw rod are oppositely and symmetrically arranged in a rotating direction, so that the threads at the two ends of the screw rod can rotate at the same angle, the movable box body on the two sides of the fixed box body moves towards or away from the fixed box body synchronously and equidistantly, the two movable steel sleepers are driven to move synchronously, the distance between the two movable steel sleepers is kept equal to that between the two movable steel sleepers, and therefore the expansion joint of the railway bridge is adapted to change.
2. The displacement telescopic device according to claim 1, wherein a mounting portion is provided in a middle portion of the screw rod, and the mounting portion is mounted through the stationary box by a bearing, so that the screw rod is rotatably connected to the stationary box.
3. The displacement telescopic device according to claim 1 or 2, wherein the screw has a thread inclination angle larger than a thread self-locking angle so that the screw can be pushed to rotate under the telescopic action of the expansion joint of the railroad bridge.
4. The displacement telescopic device according to claim 1, wherein the fixed steel sleeper, the first movable steel sleeper and the second movable steel sleeper are in sliding connection with the support beam through a slider mechanism (60).
5. Displacement telescopic device according to claim 4, characterised in that said slider mechanism comprises two slider bodies (61) of identical configuration, said slider bodies being configured in an L-shape.
6. The displacement telescopic device according to claim 5, wherein the rest beam is configured in an I-shape in cross section and comprises an upper support plate, a lower support plate having a thickness smaller than that of the upper support plate, and a connection plate connecting the upper support plate and the lower support plate, and the fixing steel sleeper is connected below the lower support plate of the rest beam to support the rest beam.
7. The displacement telescopic device according to claim 6, wherein the two sliding block bodies are relatively and fixedly mounted on the fixed steel sleeper so as to form a clamping portion between the two sliding block bodies, and the lower support plate of the support beam is fittingly mounted in the clamping portion and can slide relatively.
8. The displacement telescopic device according to claim 7, wherein a guiding smooth member is provided between the supporting beam and the clamping portion, so that the fixed steel sleeper, the first movable steel sleeper and the second movable steel sleeper are slidably connected with the supporting beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910893433.7A CN110792033B (en) | 2019-09-20 | 2019-09-20 | Displacement telescopic device for railway bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910893433.7A CN110792033B (en) | 2019-09-20 | 2019-09-20 | Displacement telescopic device for railway bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110792033A CN110792033A (en) | 2020-02-14 |
| CN110792033B true CN110792033B (en) | 2021-03-23 |
Family
ID=69439306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910893433.7A Active CN110792033B (en) | 2019-09-20 | 2019-09-20 | Displacement telescopic device for railway bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110792033B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112176863B (en) * | 2020-10-09 | 2021-10-26 | 尤利卡（江苏）集成电气有限公司 | Telescopic rail type bridge construction auxiliary device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4239878A1 (en) * | 1992-11-27 | 1994-06-01 | Butzbacher Weichenbau Gmbh | Support for a rail |
| CN201214765Y (en) * | 2008-06-04 | 2009-04-01 | 中国铁道科学研究院铁道建筑研究所 | Large displacement telescoping device for railroad bridge end |
| CN101725110A (en) * | 2009-11-24 | 2010-06-09 | 成都市新筑路桥机械股份有限公司 | Telescopic device for railway |
| JP2014227818A (en) * | 2013-05-20 | 2014-12-08 | 綜合計測株式会社 | Horizontal displacement measuring device for structure |
| CN206752300U (en) * | 2017-04-26 | 2017-12-15 | 天津桥通科技发展有限公司 | Modulus type railway expansion joint |
| CN208250833U (en) * | 2018-04-24 | 2018-12-18 | 中国铁道科学研究院集团有限公司 | Beam-ends lift pillow device |
| CN109778691A (en) * | 2019-03-14 | 2019-05-21 | 中铁第四勘察设计院集团有限公司 | Steel bomb physique beam type profile steel bridge expansion device |
-
2019
- 2019-09-20 CN CN201910893433.7A patent/CN110792033B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110792033A (en) | 2020-02-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Hui et al. | Displacement at girder end of long-span railway steel bridges and performance requirements for bridge expansion joint | |
| CN103469726B (en) | Large-displacement railroad bridge end expansion device | |
| CN108517761B (en) | Integral beam end telescoping device suitable for super large span railway steel bridge | |
| CN110792033B (en) | Displacement telescopic device for railway bridge | |
| CN109024107B (en) | Large displacement telescoping device of middle-low speed magnetic levitation track beam | |
| CN110067190B (en) | Support assembly and track beam with same | |
| CN113373785B (en) | Beam seam dispersion structure of large-span high-speed magnetic levitation bridge | |
| CN211689691U (en) | Magnetic suspension track system | |
| EP2631424B1 (en) | Support structure | |
| CN105421228B (en) | A kind of bridge expansion joint installation | |
| CN215482265U (en) | Trigger type displacement locking friction pendulum support | |
| CN109024106B (en) | Longitudinal beam sliding device of medium-low speed magnetic levitation bridge large-displacement telescopic device | |
| CN212316666U (en) | Rack and pinion formula bridge large displacement telescoping device | |
| CN209307848U (en) | A kind of bridge cable retractor device | |
| CN111501538A (en) | Rack and pinion formula bridge large displacement telescoping device | |
| CN212582310U (en) | Hollow iron beam locking device and hollow iron track | |
| CN203530839U (en) | Bridge-end telescopic device for large-displacement railroad bridges | |
| JP6887580B1 (en) | How to install the slip seismic isolation device | |
| CN212077604U (en) | Upper limiting movable spherical support of bridge | |
| CN111236053A (en) | Lower-limiting movable spherical support of bridge | |
| CN113308986A (en) | Trigger type displacement locking friction pendulum support | |
| CN209686225U (en) | A kind of replaceable expansion gap device of railroad bridge large span | |
| JP2014152586A (en) | Earthquake-time corner folding reducing brace of railway viaduct | |
| CN212316660U (en) | Anti-seismic movable spherical support of bridge | |
| CN112878168A (en) | Variable-friction-resistance long-span continuous beam system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |