Longitudinal beam buckling device and track mechanism

Abstract

The present invention provides a longitudinal beam buckling device and a track mechanism, the longitudinal beam buckling device comprising: a device body, the device body is provided with a buckling structure for buckling the longitudinal beam and slidingly cooperating with the longitudinal beam, in an XYZ orthogonal coordinate system with the buckling direction as the Z direction, the longitudinal beam can move relative to the device body along the X direction or the opposite direction of the X direction; the device body is also provided with at least two fastening structures spaced apart along the X direction, the fastening structure is used to be fixedly connected with the track support structure. Through the present invention, the technical problem that when the expansion joint changes in the prior art, the end of the longitudinal beam is prone to warping, resulting in a greater risk of collision with the train is alleviated.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit bridges, and in particular to a longitudinal beam buckling device and a rail mechanism. Background Art

[0002] Under the influence of temperature changes and live loads of trains, the beam ends of adjacent bridges or the displacement between bridges and abutments of large-span railway bridges are large. In order to maintain the continuity between the bridge and the track and ensure the reliable transition and support of the rails at the expansion joint, it is usually necessary to install a beam end expansion device at the expansion joint. The beam end expansion device is an important component of the bridge, which has the function of allowing vehicles to pass through the bridge smoothly and safely and meeting the needs of structural deformation.

[0003] In order to ensure that the beam end expansion device has sufficient vertical and lateral rigidity and to ensure the stability of the track, the beam end expansion device usually includes a longitudinal beam. At the expansion joint of the bridge, the sleepers or track plates are respectively fixed on both sides of the expansion joint, and the rails span the expansion joint and are arranged on the top of the sleepers or track plates. The longitudinal beam is also arranged on the top of the sleepers or track plates and spans the expansion joint. The two ends of the longitudinal beam are respectively located on both sides of the expansion joint; in order to adapt to the changes in the expansion joint, the longitudinal beam can slide relative to the sleepers or track plates along the longitudinal direction of the sleepers or track plates. In the prior art, when the expansion joint changes, the end of the longitudinal beam is prone to warping up, and there is a greater risk of collision with the train, posing a threat to the driving installation. Summary of the invention

[0004] The object of the present invention is to provide a longitudinal beam buckling device and a track mechanism to alleviate the technical problem in the prior art that when the expansion joint changes, the end of the longitudinal beam is prone to warping up, resulting in a greater risk of collision with a train.

[0005] The above-mentioned purpose of the present invention can be achieved by adopting the following technical solutions:

[0006] The present invention provides a longitudinal beam clamping device, comprising: a device body, the device body is provided with a clamping structure for clamping the longitudinal beam and slidingly cooperating with the longitudinal beam, in an XYZ orthogonal coordinate system with the clamping direction as the Z direction, the longitudinal beam can move relative to the device body along the X direction or the opposite direction of the X direction; the device body is also provided with at least two fastening structures spaced apart along the X direction, and the fastening structures are used to be fixedly connected with a track supporting structure.

[0007] In a preferred embodiment, the fastening structure comprises a through hole for passing a bolt.

[0008] In a preferred embodiment, the fastening structure includes a protrusion, and the through hole is provided in the protrusion.

[0009] In a preferred embodiment, the at least two fastening structures include a first fastening structure and a second fastening structure, and the first fastening structure and the second fastening structure are sequentially distributed at two ends of the device body along the X direction.

[0010] In a preferred embodiment, the buckling structure includes a groove having a groove top wall and groove side walls; the groove top wall and the groove side walls both extend along the X direction; the groove top wall is perpendicular to the Z direction and slidably cooperates with the longitudinal beam.

[0011] In a preferred embodiment, a first slope is provided at the end of the groove top wall close to the first fastening structure, and the first slope is inclined in the opposite direction of the X direction toward the opposite direction of the Z direction; a second slope is provided at the end of the groove top wall close to the second fastening structure, and the second slope is inclined in the opposite direction of the Z direction along the X direction.

[0012] In a preferred embodiment, a third slope is provided at the end of the groove side wall close to the first fastening structure, and the third slope is inclined in the opposite direction of the X direction toward the opposite direction of the Y direction; a fourth slope is provided at the end of the groove side wall close to the second fastening structure, and the fourth slope is inclined in the opposite direction of the X direction toward the Y direction.

[0013] In a preferred embodiment, the groove top wall and the groove side wall are perpendicular to each other.

[0014] In a preferred embodiment, the device body has a body bottom wall, which is opposite to the groove top wall; a fifth slope is provided at the end of the body bottom wall close to the first fastening structure, and the fifth slope is inclined in the opposite direction of the X direction toward the Z direction; a sixth slope is provided at the end of the body bottom wall close to the second fastening structure, and the sixth slope is inclined in the opposite direction of the Z direction along the X direction.

[0015] In a preferred embodiment, the device body has a body side wall, the groove side wall and the body side wall are connected to the groove top wall in sequence along the Y direction, and the body side wall is parallel to the groove side wall; the end of the body side wall close to the first fastening structure is provided with a seventh slope surface, and the seventh slope surface is inclined in the opposite direction of the X direction toward the opposite direction of the Y direction; the end of the body side wall close to the second fastening structure is provided with an eighth slope surface, and the eighth slope surface is inclined in the opposite direction of the Y direction along the X direction.

[0016] The present invention provides a track mechanism, comprising: a track supporting structure, a steel rail, a longitudinal beam and the longitudinal beam buckling device, wherein the steel rail is installed on the track supporting structure; the longitudinal beam is arranged on the top surface of the track supporting structure and is parallel to the steel rail; the longitudinal beam buckling device is fixed to the track supporting structure through a fastening structure, and the buckling structure is buckled on the longitudinal beam.

[0017] In a preferred embodiment, the track support structure includes a plurality of sleepers distributed at intervals, and two adjacent fastening structures are arranged on two adjacent sleepers in a one-to-one correspondence.

[0018] In a preferred embodiment, the track mechanism includes a plurality of longitudinal beam buckling devices symmetrically arranged on both sides of the longitudinal beam.

[0019] The characteristics and advantages of the present invention are: at the expansion joint of the bridge, one end of the longitudinal beam is fixed to the track support structure on one side of the expansion joint, and the other end is installed on the track support structure on the other side of the expansion joint using the longitudinal beam clamping device provided by the present invention; the X direction is parallel to the length direction of the longitudinal beam, and the Z direction is vertically downward. The two fastening structures are distributed along the length direction of the longitudinal beam, so that the position and structure of the clamping structure remain stable. When the expansion joint changes, the longitudinal beam can slide in the clamping structure, and due to the limiting effect along the Z direction applied by the clamping structure, the end is reduced from warping up, reducing the risk of collision with the train. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic structural diagram of a longitudinal beam buckling device from a first perspective provided by an embodiment of the present invention;

[0022] Figure 2 A schematic structural diagram of a longitudinal beam buckling device from a second viewing angle provided by an embodiment of the present invention;

[0023] Figure 3 A schematic structural diagram of a longitudinal beam buckling device provided by an embodiment of the present invention from a third viewing angle;

[0024] Figure 4 A schematic structural diagram of a longitudinal beam buckling device provided by an embodiment of the present invention from a fourth viewing angle;

[0025] Figure 5 A schematic structural diagram of a first state of cooperation between a longitudinal beam buckling device and a longitudinal beam provided in an embodiment of the present invention;

[0026] Figure 6 A schematic structural diagram of a second state in which the longitudinal beam buckling device provided by an embodiment of the present invention cooperates with the longitudinal beam;

[0027] Figure 7 A schematic structural diagram of a track mechanism provided in an embodiment of the present invention.

[0028] Explanation of the accompanying drawings: 10. Device body; 11. Bottom wall of the body; 111. Fifth slope; 112. Sixth slope; 12. Side wall of the body; 121. Seventh slope; 122. Eighth slope; 20. Buckling structure; 21. Groove; 211. Groove top wall; 212. Groove side wall; 221. First slope; 222. Second slope; 223. Third slope; 224. Fourth slope; 30. Fastening structure; 31. First fastening structure; 32. Second fastening structure; 40. Through hole; 50. Protrusion; 61. Longitudinal beam; 62. Rail; 70. Track supporting structure; 71. Sleeper; 80. Expansion joint; 91. First buckle; 92. Second buckle. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Implementation Method 1

[0031] like Figure 1-Figure 4 As shown, the present invention provides a longitudinal beam clamping device, including: a device body 10, the device body 10 is provided with a clamping structure 20 for clamping the longitudinal beam and slidingly cooperating with the longitudinal beam, in an XYZ orthogonal coordinate system with the clamping direction as the Z direction, the longitudinal beam can move relative to the device body 10 along the X direction or the opposite direction of the X direction; the device body 10 is also provided with at least two fastening structures 30 spaced apart along the X direction, the fastening structure 30 is used to be fixedly connected to the track supporting structure, the track supporting structure is a sleeper or a track plate supporting the rails.

[0032] In the prior art, the longitudinal beam is usually arranged on the upper top surface of the sleeper or the track plate, so the Z direction is vertically upward, the X direction is along the horizontal direction, and the X direction is perpendicular to the Z direction.

[0033] At the expansion joint of the bridge, one end of the longitudinal beam is fixed to the track support structure on one side of the expansion joint, and the other end is installed on the track support structure on the other side of the expansion joint using the longitudinal beam buckling device provided by the present invention; the X direction is parallel to the length direction of the longitudinal beam, and the Z direction is vertically downward. The fastening structure 30 is distributed along the length direction of the longitudinal beam, so that the position and structure of the buckling structure 20 remain stable. When the expansion joint changes, the longitudinal beam can slide in the buckling structure 20, and due to the limiting effect along the Z direction applied by the buckling structure 20, the end can be reduced from warping up, reducing the risk of collision with the train.

[0034] In order to facilitate the connection and fixation between the fastening structure 30 and the sleeper or the track plate, the fastening structure 30 includes a through hole 40 for inserting a bolt. When installing the longitudinal beam buckling device provided by the present invention, the bolt passes downward through the through hole 40 and is fixedly connected to the sleeper or the track plate. Preferably, the fastening structure 30 includes two through holes 40, and the two through holes 40 are arranged in the device body 10 at intervals along the X direction.

[0035] The fastening structure 30 includes a protrusion 50, and the through hole 40 is provided in the protrusion 50. Preferably, the protrusion 50 is integrally formed with the device body 10. Figure 1 As shown, the distance between two adjacent protrusions 50 is recorded as L, which satisfies 0.50m≤L≤0.63m. The size of L is equal to the distance between two adjacent sleepers, or equal to the distance between two adjacent rail support seats on the track plate. The longitudinal beam clamping device provided by the present invention is arranged at the end of the longitudinal beam; when the bridge expands and contracts, the longitudinal beam slides in the clamping structure 20, so that the end of the longitudinal beam can always be clamped by the clamping structure 20, avoiding the longitudinal beam from being in a cantilever state, so as to reduce warping. When the expansion and contraction amount of the bridge is large, in some embodiments, the number of protrusions 50 is greater than or equal to 3, extending the length of the device body 10, and increasing the length of the clamping structure 20 that can cooperate with the longitudinal beam.

[0036] The fastening structures 30 located at both ends of the device body 10 are respectively referred to as a first fastening structure 31 and a second fastening structure 32 , and the first fastening structure 31 and the second fastening structure 32 are sequentially distributed along the X direction.

[0037] In one embodiment of the present invention, the buckling structure 20 includes a groove 21, and the groove 21 and the through hole 40 are located on opposite sides of the device body 10. The groove 21 has a groove top wall 211 and a groove side wall 212; the groove top wall 211 and the groove side wall 212 both extend along the X direction; the groove top wall 211 is perpendicular to the Z direction and slides with the longitudinal beam. During use, the groove top wall 211 faces downward, and the device body 10 is fixed to the sleeper or track plate by the fastening structure 30. When the longitudinal beam is extended or retracted, the groove top wall 211 can exert a downward limiting effect on the longitudinal beam to prevent the longitudinal beam from warping up.

[0038] When installing the longitudinal beam buckling device, in order to reserve space for the longitudinal beam to move and facilitate the sliding of the longitudinal beam, a gap can be set between the groove top wall 211 and the longitudinal beam as needed, so that the longitudinal beam can only slightly tilt up within the range defined by the gap. In order to make the relative sliding between the longitudinal beam and the device body 10 more stable and smooth, the groove top wall 211 and the groove side wall 212 are provided with smooth surfaces.

[0039] When the expansion joint of the bridge changes, at least one end of the longitudinal beam needs to slide on the sleeper or track plate. When the sliding end of the longitudinal beam completely escapes from the buckling of the device body 10, in order to reduce the risk of the end of the longitudinal beam colliding with one end of the device body 10. The inventor has further optimized the longitudinal beam buckling device provided by the present invention: Figure 2 As shown, the end of the groove top wall 211 close to the first fastening structure 31 is provided with a first slope 221, and the first slope 221 is inclined in the opposite direction of the X direction toward the opposite direction of the Z direction; the end of the groove top wall 211 close to the second fastening structure 32 is provided with a second slope 222, and the second slope 222 is inclined in the opposite direction of the X direction toward the Z direction. When the sliding end of the longitudinal beam is completely released from the buckling of the device body 10 and then extends again, the first slope 221 and the second slope 222 can guide the longitudinal beam to slide into the groove 21, so that the longitudinal beam can slide relative to the groove top wall 211.

[0040] The first slope 221 and the second slope 222 can be planes or arc-shaped surfaces. For ease of processing, the first slope 221 and the second slope 222 are both planes; arc transitions are used at both ends of the first slope 221 and the second slope 222.

[0041] The Y direction is parallel to the horizontal direction. In some embodiments, the groove top wall 211 and the groove side wall 212 are perpendicular to each other. When the longitudinal beam buckling device provided by the present invention is symmetrically arranged on both sides of the longitudinal beam, the position of the longitudinal beam in the Y direction can be limited by the groove side wall 212, so as to avoid the longitudinal beam sleeper or the upper part of the track plate from deflecting in the Y direction, so that the position of the longitudinal beam is more stable, which is conducive to ensuring the reliable transition and support of the rail at the expansion joint. In actual use, by adjusting the installation position of the device body 10 relative to the longitudinal beam, it is possible to achieve the groove side wall 212 abutting against the longitudinal beam, or to preset a movable gap between the groove side wall 212 and the longitudinal beam.

[0042] Preferably, the end of the groove side wall 212 close to the first fastening structure 31 is provided with a third slope 223, and the third slope 223 is inclined in the opposite direction of the X direction toward the opposite direction of the Y direction; the end of the groove side wall 212 close to the second fastening structure 32 is provided with a fourth slope 224, and the fourth slope 224 is inclined in the opposite direction of the X direction toward the Y direction. When the sliding end of the longitudinal beam completely escapes from the buckling of the device body 10, the risk of the end of the longitudinal beam colliding with the end of the device body 10 can be reduced by providing the third slope 223 and the fourth slope 224.

[0043] The third slope 223 and the fourth slope 224 can be planes or arc-shaped surfaces. For ease of processing, the third slope 223 and the fourth slope 224 are both planes; arc transitions are used at both ends of the third slope 223 and the fourth slope 224.

[0044] like Figure 2As shown, the device body 10 has a body bottom wall 11, and the body bottom wall 11 is connected to the groove side wall 212. In some embodiments, the end of the body bottom wall 11 close to the first fastening structure 31 is provided with a fifth slope 111, and the fifth slope 111 is inclined in the opposite direction of the X direction toward the opposite direction of the Z direction; the end of the body bottom wall 11 close to the second fastening structure 32 is provided with a sixth slope 112, and the sixth slope 112 is inclined in the opposite direction of the Z direction along the X direction.

[0045] like Figure 2 As shown, the device body 10 has a body side wall 12, and the groove side wall 212 and the body side wall 12 are connected to the groove top wall 211 in sequence along the Y direction, and the body side wall 12 is parallel to the groove side wall 212. When in use, the body side wall 12 can abut against the longitudinal beam, or a gap is preset between the body side wall 12 and the longitudinal beam. The end of the body side wall 12 close to the first fastening structure 31 is provided with a seventh slope 121, and the seventh slope 121 is inclined in the opposite direction of the X direction to the opposite direction of the Y direction; the end of the body side wall 12 close to the second fastening structure 32 is provided with an eighth slope 122, and the eighth slope 122 is inclined in the opposite direction of the X direction to the Y direction. When the sliding end of the longitudinal beam completely escapes from the buckling of the device body 10, the risk of the end of the longitudinal beam colliding with the end of the device body 10 can be reduced by providing the seventh slope 121 and the eighth slope 122.

[0046] The seventh slope 121 and the eighth slope 122 can be planes or arc-shaped surfaces. For ease of processing, the seventh slope 121 and the eighth slope 122 are both planes; arc transitions are used at both ends of the seventh slope 121 and the eighth slope 122.

[0047] Implementation Method 2

[0048] like Figure 5-Figure 7 As shown, the embodiment of the present invention further provides a track mechanism, comprising: a track support structure 70, a steel rail 62, a longitudinal beam 61 and the longitudinal beam buckling device of the above-mentioned embodiment 1, wherein the steel rail 62 is installed on the track support structure 70; the longitudinal beam 61 is arranged on the top surface of the track support structure 70 and is parallel to the steel rail 62; the longitudinal beam buckling device is fixed to the track support structure 70 through a fastening structure 30, and the buckling structure 20 buckles the longitudinal beam 61. The structure, working principle and beneficial effects of the longitudinal beam buckling device are the same as those of the embodiment 1, and will not be repeated here.

[0049] The track support structure 70 can adopt a sleeper 71 or a track plate. Both the track plate and the sleeper 71 are used to support the rails. Moreover, the connection structure between the track plate and the rail 62 is basically the same as the connection structure between the sleeper 71 and the rail 62; the connection structure between the track plate and the longitudinal beam 61 is basically the same as the connection structure between the sleeper 71 and the longitudinal beam 61; the connection structure between the track plate and the longitudinal beam clamping device is basically the same as the connection structure between the sleeper 71 and the longitudinal beam clamping device. For ease of understanding, the track mechanism is described below by taking the track support structure 70 adopting the sleeper 71 as an example.

[0050] The track support structure 70 includes a plurality of sleepers 71 distributed at intervals, and the plurality of sleepers 71 are respectively located on both sides of the bridge expansion joint 80. On one side of the expansion joint 80, the longitudinal beam 61 is fixed to the sleeper 71 by a first buckle 91; on the other side of the expansion joint 80, the longitudinal beam 61 is connected to the sleeper 71 by a second buckle 92 and the longitudinal beam buckling device mentioned above, and the longitudinal beam 61 can move relative to the second buckle 92 and the longitudinal beam buckling device mentioned above. The device body 10 of the longitudinal beam buckling device mentioned above spans at least two sleepers 71, and two adjacent fastening structures 30 are fixed to two adjacent sleepers 71 one by one, so that the end of the longitudinal beam 61 is always kept buckled by the buckling structure 20 to avoid the longitudinal beam 61 from being in a cantilever state, so as to reduce warping.

[0051] like Figure 5 and Figure 6 As shown, longitudinal beam buckling devices are symmetrically provided on both sides of the longitudinal beam 61. The longitudinal beam buckling devices on both sides can also enhance the guiding effect on the longitudinal beam 61, reduce the horizontal deviation of the longitudinal beam 61, and prevent the longitudinal beam 61 from falling off the groove, which is conducive to the longitudinal beam buckling device maintaining a stable buckling effect on the longitudinal beam 61.

[0052] The above are only several embodiments of the present invention. Those skilled in the art may make various changes or modifications to the embodiments of the present invention based on the contents disclosed in the application documents without departing from the spirit and scope of the present invention.

Claims

1. A longitudinal beam buckling device, characterized in that: include: The device body is provided with a pressing structure for pressing the longitudinal beam and slidingly cooperating with the longitudinal beam, and in an XYZ orthogonal coordinate system with the pressing direction as the Z direction, the longitudinal beam can move relative to the device body along the X direction or in the opposite direction of the X direction; The device body is also provided with at least two fastening structures spaced apart along the X direction, and the fastening structures are used to be fixedly connected to the track support structure; The track support structure is a sleeper or a track plate supporting the rails, and the device body spans over at least two of the sleepers or spans over at least two of the track plates; The buckling structure comprises a groove, and the groove has a groove top wall and a groove side wall; the groove top wall and the groove side wall both extend along the X direction; the groove top wall is perpendicular to the Z direction and is slidably matched with the longitudinal beam; Both ends of the groove top wall and both ends of the groove side wall are provided with slopes that can reduce the risk of collision between the longitudinal beam and the device body; The device body has a body bottom wall, and the body bottom wall is connected to the groove side wall; the device body has a body side wall, and the groove side wall and the body side wall are sequentially connected to the groove top wall along the Y direction, and the body side wall is parallel to the groove side wall; Both ends of the bottom wall of the main body and both ends of the side wall of the main body are provided with slopes which can reduce the risk of collision between the longitudinal beam and the device body.

2. The longitudinal beam buckling device according to claim 1, characterized in that: The fastening structure comprises a through hole for passing a bolt.

3. The longitudinal beam buckling device according to claim 2, characterized in that: The fastening structure includes a protruding portion, and the through hole is arranged in the protruding portion.

4. The longitudinal beam buckling device according to any one of claims 1 to 3, characterized in that: The at least two fastening structures include a first fastening structure and a second fastening structure, and the first fastening structure and the second fastening structure are sequentially distributed at two ends of the device body along the X direction.

5. The longitudinal beam buckling device according to claim 4, characterized in that: A first slope is provided at an end of the groove top wall close to the first fastening structure, and the first slope is inclined in the opposite direction of the X direction toward the opposite direction of the Z direction; A second slope is provided on the end of the groove top wall close to the second fastening structure, and the second slope is inclined along the X direction toward the opposite direction of the Z direction.

6. The longitudinal beam buckling device according to claim 4, characterized in that: A third slope is provided at an end of the groove side wall close to the first fastening structure, and the third slope is inclined in the opposite direction of the X direction toward the opposite direction of the Y direction; An end of the groove side wall close to the second fastening structure is provided with a fourth slope surface, and the fourth slope surface is inclined along the X direction toward the opposite direction of the Y direction.

7. The longitudinal beam buckling device according to claim 4, characterized in that: The groove top wall and the groove side wall are perpendicular to each other.

8. The longitudinal beam buckling device according to claim 4, characterized in that: A fifth slope is provided at an end of the bottom wall of the body close to the first fastening structure, and the fifth slope is inclined in the opposite direction of the X direction toward the opposite direction of the Z direction; A sixth slope is disposed on an end of the bottom wall of the main body close to the second fastening structure. The sixth slope is inclined along the X direction in the opposite direction of the Z direction.

9. The longitudinal beam buckling device according to claim 6, characterized in that: A seventh slope is provided at an end of the side wall of the body close to the first fastening structure, and the seventh slope is inclined in the opposite direction of the X direction toward the opposite direction of the Y direction; An eighth slope is disposed on the end of the side wall of the main body close to the second fastening structure. The eighth slope is inclined along the X direction in the opposite direction of the Y direction.

10. A track mechanism, characterized in that: include: A track support structure, a steel rail, a longitudinal beam, and a longitudinal beam buckling device as claimed in any one of claims 1 to 9, wherein the steel rail is mounted on the track support structure; the longitudinal beam is arranged on the top surface of the track support structure and is parallel to the steel rail; The longitudinal beam buckling device is fixed to the track support structure through the fastening structure, and the buckling structure is buckled to the longitudinal beam.

11. The track mechanism according to claim 10, characterized in that: The track support structure comprises a plurality of sleepers distributed at intervals, and two adjacent fastening structures are arranged on two adjacent sleepers in a one-to-one correspondence.

12. The track mechanism according to claim 10, characterized in that: The track mechanism comprises a plurality of longitudinal beam buckling devices symmetrically arranged on both sides of the longitudinal beam.

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