High-speed rail joist supporting structure

Abstract

The invention relates to a high-speed rail joist supporting structure, and relates to the technical field of supporting structures. The device comprises a pier, a supporting beam and a plurality of supporting seats, the pier is vertically arranged, the supporting beam is horizontally arranged and fixed to the top of the pier, the supporting seats are arranged on the supporting beam and distributed at intervals in the length direction of the supporting beam, the top ends of the supporting seats are connected with a high-speed railway bridge, and buffering assemblies are arranged on the supporting seats. The joist supporting structure has the effect that the supporting stability of the joist supporting structure cannot be affected when the high-speed rail bridge is vibrated.

Description

Technical Field

[0001] The present application relates to the field of supporting structures, and in particular to a high-speed railway joist supporting structure. Background Art

[0002] The main purpose of the design of the high-speed railway beam support structure is to support the bridge and track structure of the high-speed railway. During the construction and maintenance of the high-speed railway, the beam support structure is used to ensure the stability and safety of the bridge and track. Especially when the bridge is repaired, replaced or inspected, this support structure can temporarily bear the weight of the bridge and track, providing safe working conditions for construction and maintenance work.

[0003] When the joist support structure supports the high-speed railway bridge, the high-speed train passes through the high-speed railway bridge area, which generates a large vibration to the bridge structure due to its high speed and heavy weight. In order to achieve a stable support effect, the joist and the high-speed railway bridge are usually rigidly connected, such as steel plate connection components, so when the high-speed railway bridge is subjected to severe vibration, it is very easy to affect the overall support stability of the joist support structure, so it needs to be improved. Summary of the invention

[0004] In order to improve the problem that when a high-speed railway bridge is subjected to severe vibration, the overall support stability of the joist support structure is easily affected, the present application provides a high-speed railway joist support structure.

[0005] The high-speed rail joist support structure provided in this application adopts the following technical solution: A high-speed railway support beam support structure includes a pier, a support beam and a plurality of support seats, wherein the pier is vertically arranged, the support beam is horizontally arranged and fixed on the top of the pier, the support seat is arranged on the support beam, and a plurality of the support seats are arranged at intervals along the length direction of the support beam, the top end of the support seat is connected to the high-speed railway bridge, and a buffer assembly is provided on the support seat.

[0006] By adopting the above technical solution, the bridge piers and the support beams jointly support the support seats, and several support seats support the high-speed railway bridge, so that the weight of the entire high-speed railway bridge is distributed to several support seats, so that the high-speed railway bridge has multiple support points, so that the support seats have a higher support stability for the high-speed railway bridge. When the high-speed railway bridge vibrates, the vibration is transmitted to the support seat, and the buffer component plays a buffering role, suppressing the impact from the high-speed railway bridge, thereby reducing the impact of the vibration generated by the high-speed train passing on the support beam support structure and improving the overall stability and safety.

[0007] Optionally, the buffer assembly includes a support block and a support spring. A mounting hole is opened on the top wall of the support seat. The support block is inserted into the mounting hole and can move up and down in the mounting hole. The support block abuts against the high-speed railway bridge. The support spring is arranged in the mounting hole and is connected to the support block for driving the support block to move upward.

[0008] By adopting the above technical solution, when the high-speed railway bridge vibrates, the high-speed railway bridge applies pressure to the support block, causing the support spring to deform, thereby absorbing kinetic energy. At this time, the support spring generates a reverse elastic force to push the high-speed railway bridge back to its original position. In this process, the kinetic energy of the object will be continuously converted into potential energy, and then from potential energy to kinetic energy. The spring absorbs and releases this part of energy, so that the vibration of the high-speed railway bridge gradually decays, thereby reducing the amplitude and frequency of the vibration of the high-speed railway bridge and improving the overall stability and safety.

[0009] Optionally, a limit block is provided on the side wall of the support block, and a limit groove is opened in the vertical direction on the inner wall of the mounting hole. The limit block is inserted into the limit groove and can move in the limit groove. The support spring is located in the limit groove and below the limit block. One end of the support spring is fixed to the limit block, and the other end is fixed to the inner wall of the limit groove.

[0010] By adopting the above technical solution, when the high-speed railway bridge vibrates and drives the support block to move up and down in the installation hole, the limit block moves in the limit groove, and the side wall of the limit block slides against the inner wall of the limit groove. The limit groove plays a limiting and guiding role, so that the limit block can only move along the track of the limit groove, so that the support block is not easy to deflect when moving, and the support stability of the high-speed railway bridge of the support block is improved. The support spring is located in the limit groove, so that the position of the support spring is limited, that is, the support spring is not easy to bend, and the expansion and contraction stability of the support spring is improved.

[0011] Optionally, a cavity is provided in the support seat, the cavity is located below the mounting hole and is connected through a connecting hole, a shock absorbing assembly is provided in the cavity, the shock absorbing assembly includes a magnetic ring and a magnetic ball, the magnetic ring is fixed on the inner wall of the cavity, the magnetic ball is arranged in the cavity, the magnetic ball and the magnetic ring repel each other, and the magnetic ring is used to insert the magnetic ball into the connecting hole.

[0012] By adopting the above technical solution, when the high-speed railway bridge vibrates violently, causing the support block to move down and compressing the support spring to the limit, the bottom of the support block contacts the magnetic ball and exerts pressure on the magnetic ball. Due to the effect of the magnetic field, the magnetic ball and the magnetic ring are relatively suspended, and there is no direct device connecting the magnetic ball and the magnetic ring. This design makes the hollow area play a buffering role, which can provide a continuous buffering effect during vibration or impact, thereby achieving a shock-absorbing effect and improving the overall stability and safety of the joist support structure.

[0013] Optionally, a plurality of support rods are provided on the support seat, the support rods are vertically arranged, the top ends of the support rods are fixed to the high-speed railway bridge, and an adjustment component is provided on the support seat, the adjustment component is connected to the support rods, and is used to drive the support rods to move up and down.

[0014] By adopting the above technical solution, the high-speed railway bridge is directly overlapped on the top of the support rod, and the support rod is used to support the high-speed railway bridge, so that the support spring does not play a supporting role but only plays a buffering role, so that the support spring will not be affected by the gravity of the high-speed railway bridge and compressed to the bottom, thereby losing the ability to rebound and then losing the shock absorbing effect.

[0015] The adjustment component can adjust the height of the support rod, thereby adjusting the position of the fixed block to change the initial compression degree of the support spring. When the support spring is compressed, its hardness will increase, resulting in an increase in the elastic modulus, which will affect its shock absorption effect. Specifically, compression will lower the resonant frequency of the spring and reduce the damping ratio, resulting in a weakened shock absorption effect. This principle is used to adjust the overall shock absorption effect of the joist support structure to meet the needs of different working conditions.

[0016] Optionally, the adjustment assembly includes an adjustment rod and an adjustment disk, the adjustment rod passes through the support seat and is rotatably connected to the support seat, the adjustment disk is located in the support seat, the bottom end of the support rod is provided on the adjustment disk, the adjustment disk is sleeved on the adjustment rod and is threadedly connected to the adjustment rod, and the adjustment rod rotates to move the adjustment disk up and down.

[0017] By adopting the above technical solution, the adjusting rod is driven to rotate. Since the adjusting disk is threadedly connected to the adjusting rod, the adjusting disk is restricted in the support seat and cannot rotate along with the adjusting rod, so that the adjusting disk eventually moves along the length direction of the adjusting rod, driving the support rod to adjust its position in height.

[0018] Optionally, the support beam is provided with a rotating assembly for driving a plurality of adjusting rods to rotate synchronously, the rotating assembly includes a rotating rack and a plurality of rotating gears, the bottom end of the adjusting rod is inserted into the support beam, the rotating rack is inserted on the support beam, and can move along the length direction of the support beam, a plurality of the rotating gears correspond one by one to the adjusting rods, the rotating gears are coaxially sleeved on the corresponding adjusting rods, and the rotating gears are fixed to the adjusting rods, and the rotating gears are meshed with the rotating racks.

[0019] By adopting the above technical solution, the rotating rack is driven to move, so that several rotating gears rotate synchronously, thereby making several adjusting rods rotate at the same time, that is, making several adjusting disks move the same distance, thereby ensuring that several support rods are on the same horizontal line, achieving stable support of the high-speed railway bridge by the support rods, and avoiding the high-speed railway bridge from tilting.

[0020] Optionally, a linkage assembly is provided on the adjusting disk, and the linkage assembly includes an internal gear and a plurality of linkage gears. The internal gear is rotatably connected to the adjusting disk, and the bottom end of the support rod is rotatably connected to the adjusting disk. The plurality of linkage gears correspond to the support rods one by one. The linkage gears are coaxially sleeved on the support rod and fixed to the support rod, and the linkage gears are meshed with the internal gears.

[0021] By adopting the above technical solution, when the high-speed railway bridge is subjected to severe vibration and deflects in the horizontal direction, the support rod at a certain point tends to rotate, that is, one of the support rods drives the interlocking gear to rotate, thereby driving the internal gear to rotate, so that all the interlocking gears meshing with the internal gear rotate synchronously, and the rotational friction resistance of the remaining support rods on the same adjustment disk on the high-speed railway bridge is used to limit the deflection of the high-speed railway bridge, thereby avoiding the horizontal deflection of the high-speed railway bridge and improving the stability of the support of the high-speed railway bridge.

[0022] Optionally, the linkage gear is connected to the adjusting disk via a connecting assembly, the connecting assembly comprising a connecting sleeve and a connecting rod, one end of the connecting rod is located in the middle of the inner gear and is hinged to the adjusting disk, the other end of the connecting rod is inserted into the connecting sleeve, the connecting sleeve can move on the connecting rod, and one end of the connecting sleeve away from the connecting rod is hinged to the linkage gear.

[0023] By adopting the above technical solution, when the support rod is rotated due to the horizontal deflection of the high-speed railway bridge, the linkage gear pulls the connecting sleeve to move, so that the connecting rod and the connecting sleeve rotate as a whole, and the connecting sleeve also moves on the connecting rod to increase the resistance to the rotation of the linkage gear.

[0024] The friction between the connecting sleeve and the connecting rod further restricts the rotation of the support rod, making it difficult for the high-speed railway bridge to vibrate and deflect in the horizontal direction, thereby improving the stability of the support structure of the high-speed railway bridge.

[0025] Optionally, a connecting spring is provided inside the connecting sleeve, one end of the connecting spring is fixed to the end of the connecting rod, and the other end is fixed to the inner wall of the connecting sleeve.

[0026] By adopting the above technical solution, when the support rod rotates, it drives the connecting sleeve to move on the connecting rod, so that the connecting spring is stretched. At this time, the connecting spring is deformed, which plays a buffering role on the horizontal deflection caused by the vibration of the high-speed railway bridge, reduces the impact force of the vibration of the high-speed railway bridge, and improves the stability of the support beam support structure for the high-speed railway bridge. When one of the support rods rotates, driven by the linkage assembly, all the support rods on the same adjustment disk rotate synchronously, that is, all the connecting springs work together to improve the buffering effect.

[0027] In summary, the present application includes at least one of the following beneficial effects: 1. The high-speed railway bridge vibrates violently, causing the support block to move downward. When the support spring is compressed to the limit, the bottom of the support block contacts the magnetic ball and exerts pressure on the magnetic ball. Due to the effect of the magnetic field, the magnetic ball and the magnetic ring are relatively suspended, and there is no direct device connecting the magnetic ball and the magnetic ring. This design allows the hollow area to play a buffering role, providing a continuous buffering effect during vibration or impact, thereby achieving a shock-absorbing effect and improving the overall stability and safety of the joist support structure; 2. The adjustment component can adjust the height of the support rod, thereby adjusting the position of the fixed block to change the initial compression degree of the support spring. When the support spring is compressed, its hardness will increase, resulting in an increase in the elastic modulus, which will affect its shock absorption effect. Specifically, compression will lower the resonant frequency of the spring and reduce the damping ratio, resulting in a weakened shock absorption effect. This principle can be used to adjust the overall shock absorption effect of the joist support structure to meet the needs of different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural schematic diagram of the high-speed rail joist support structure according to an embodiment of the present application; Figure 2 It is a structural cross-sectional view of the support seat; Figure 3 It is a structural schematic diagram of the connection relationship between the rotating component and the linkage component in the embodiment of the present application.

[0029] In the figure: 10, support seat; 11, mounting hole; 12, limit groove; 13, connecting hole; 14, cavity; 20, buffer assembly; 21, support block; 211, limit block; 22, support spring; 30, shock absorption assembly; 31, magnetic ring; 32, magnetic ball; 40, support rod; 50, adjustment assembly; 51, adjustment rod; 52, adjustment disk; 60, rotating assembly; 61, rotating rack; 62, rotating gear; 70, linkage assembly; 71, internal gear; 72, linkage gear; 80, connecting assembly; 81, connecting sleeve; 811, connecting spring; 82, connecting rod; 90, pier; 110, support beam. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-3 This application is described in further detail.

[0031] The present application embodiment discloses a high-speed railway joist support structure. Figure 1 and Figure 2 The high-speed rail beam support structure includes a bridge pier 90, a support beam 110 and a plurality of support seats 10. The bridge pier 90 is vertically arranged, the support beam 110 is horizontally arranged and fixed on the top of the bridge pier 90, the support seat 10 is arranged on the support beam 110, and the plurality of support seats 10 are arranged at intervals along the length direction of the support beam 110. A plurality of support rods 40 are vertically inserted on the support seat 10, and the top end of the support rod 40 passes through the support seat 10 and is fixed to the high-speed rail bridge. The high-speed rail bridge is directly overlapped on the top end of the support rod 40, and the support rod 40 is used to support the high-speed rail bridge.

[0032] Reference Figure 2 and Figure 3 A buffer assembly 20 is provided on the support seat 10, and the buffer assembly 20 includes a support block 21 and a support spring 22. A mounting hole 11 is provided on the top wall of the support seat 10, and the support block 21 is inserted into the mounting hole 11 and can move up and down in the mounting hole 11. The support block 21 abuts against the high-speed railway bridge. In order to improve the stability of the movement of the support block 21, a limiting block 211 is integrally formed on the side wall of the support block 21, and a limiting groove 12 is provided on the inner wall of the mounting hole 11 in the vertical direction. The limiting block 211 is inserted into the limiting groove 12 and can move in the limiting groove 12.

[0033] Reference Figure 2 and Figure 3The support spring 22 is located in the limit groove 12 and below the limit block 211. One end of the support spring 22 is fixed to the limit block 211, and the other end is fixed to the inner wall of the limit groove 12. When the high-speed railway bridge vibrates, the floating of the high-speed railway bridge in the vertical direction exerts pressure on the support block 21, causing the limit block 211 to move downward in the limit groove 12, thereby causing the support spring 22 to deform and compress to absorb kinetic energy. At this time, the support spring 22 generates a reverse elastic force, pushing the high-speed railway bridge to return to its original position. In this process, the kinetic energy of the object will be continuously converted into potential energy, and then converted from potential energy to kinetic energy. The spring absorbs and releases this part of energy, so that the vibration of the high-speed railway bridge gradually decays, thereby reducing the amplitude and frequency of the vibration of the high-speed railway bridge and improving the overall stability and safety.

[0034] Reference Figure 2 and Figure 3 In addition, a cavity 14 can be further provided inside the support seat 10. The cavity 14 is located below the mounting hole 11. The mounting hole 11 is connected to the cavity 14 through the connecting hole 13. A shock absorbing assembly 30 is provided in the cavity 14. The shock absorbing assembly 30 includes a magnetic ring 31 and a magnetic ball 32. The magnetic ring 31 is fixed on the inner wall of the cavity 14. The magnetic ball 32 is provided in the cavity 14. The magnetic ball 32 and the magnetic ring 31 are at the same level and repel each other, so that the magnetic ball 32 is suspended in the cavity 14 under the action of the magnetic ring 31, and the upper half of the magnetic ball 32 passes through the connecting hole 13 and is inserted into the mounting hole 11.

[0035] When the high-speed railway bridge vibrates violently, the support block 21 moves downward and compresses the support spring 22 to the limit, the bottom of the support block 21 contacts the magnetic ball 32 and applies pressure to the magnetic ball 32. Due to the effect of the magnetic field, there is no direct device connecting the magnetic ball 32 and the magnetic ring 31. This design makes the hollow area play a buffering role, which can provide a continuous buffering effect during vibration or impact, thereby achieving a shock absorption effect and improving the overall stability and safety of the joist support structure.

[0036] Reference Figure 2 and Figure 3 The support seat 10 is provided with an adjustment component 50, which is connected to the support rod 40 and is used to drive the support rod 40 to move up and down. In this way, the support height can be flexibly adjusted by the adjustment component 50 to adapt to different working conditions.

[0037] Reference Figure 2 and Figure 3Specifically, the adjustment assembly 50 includes an adjustment rod 51 and an adjustment disk 52. The adjustment rod 51 passes through the support seat 10 and is rotatably connected to the support seat 10. The adjustment disk 52 is embedded in the support seat 10 and can only move in the vertical direction in the support seat 10. The bottom end of the support rod 40 is arranged on the adjustment disk 52, and the adjustment disk 52 is sleeved on the adjustment rod 51 and is threadedly connected to the adjustment rod 51. When the adjustment rod 51 rotates, the adjustment disk 52 is moved up and down by using the thread structure.

[0038] Reference Figure 1 and Figure 3 In order to drive the adjusting rod 51 to rotate, a rotating assembly 60 is provided on the supporting beam 110. The rotating assembly 60 includes a rotating rack 61 and a plurality of rotating gears 62. The bottom end of the adjusting rod 51 is inserted into the supporting beam 110. The rotating rack 61 is inserted on the supporting beam 110 and can move along the length direction of the supporting beam 110.

[0039] Reference Figure 1 and Figure 3 An electric push rod is installed on the support beam 110 by bolts, and the output end of the electric push rod is connected to one end of the rotating rack 61 to drive the rotating rack 61 to move. A plurality of rotating gears 62 correspond to the adjusting rods 51 one by one, and the rotating gears 62 are coaxially sleeved on the corresponding adjusting rods 51, and the rotating gears 62 are fixed to the adjusting rods 51, and the rotating gears 62 are meshed with the rotating racks 61.

[0040] The electric push rod is used to drive the rotating rack 61 to move, so that the rotating gears 62 rotate synchronously, so that the adjusting rods 51 rotate at the same time, that is, the adjusting disks 52 move the same distance, so as to ensure that the supporting rods 40 are on the same horizontal line, and the supporting rods 40 stably support the high-speed railway bridge. The supporting rods 40 support the high-speed railway bridge, so that the supporting springs 22 do not play a supporting role, but only a buffering role, so that the supporting springs 22 will not be affected by the gravity of the high-speed railway bridge and be compressed to the bottom, thereby losing the ability to rebound, and then losing the shock absorbing effect.

[0041] Reference Figure 2 and Figure 3 , wherein the adjustment disk 52 moves up and down to adjust the height of the support rod 40, thereby adjusting the position of the fixed block to change the initial compression degree of the support spring 22. When the support spring 22 is compressed, its hardness increases, resulting in an increase in the elastic modulus, thereby affecting its shock absorption effect. Specifically, compression will lower the resonance frequency of the support spring 22, reduce the damping ratio, and weaken the shock absorption effect. Based on this principle, the overall shock absorption effect of the joist support structure can be adjusted to meet the needs under different working conditions.

[0042] Reference Figure 2 and Figure 3In addition, a linkage assembly 70 is provided on the adjusting disk 52, and the linkage assembly 70 includes an internal gear 71 and a plurality of linkage gears 72. The internal gear 71 is rotatably connected to the adjusting disk 52, and the bottom end of the support rod 40 is rotatably connected to the adjusting disk 52. The plurality of linkage gears 72 correspond to the support rod 40 one by one. The linkage gear 72 is coaxially sleeved on the support rod 40 and fixed to the support rod 40, and the linkage gear 72 is meshed with the internal gear 71.

[0043] When the high-speed railway bridge is subjected to severe vibration and deflects in the horizontal direction, the support rod 40 at a certain point tends to rotate, that is, one of the support rods 40 drives the interlocking gear 72 to rotate, thereby driving the internal gear 71 to rotate, so that all the interlocking gears 72 meshing with the internal gear 71 rotate synchronously, and the rotational friction resistance of the remaining support rods 40 on the same adjustment disk 52 on the high-speed railway bridge is used to limit the deflection of the high-speed railway bridge, thereby avoiding the horizontal deflection of the high-speed railway bridge and improving the stability of the support of the high-speed railway bridge.

[0044] Reference Figure 2 and Figure 3 In particular, the linkage gear 72 is connected to the adjustment disk 52 through the buffer assembly 20, and the buffer assembly 20 includes a connecting sleeve 81 and a connecting rod 82. One end of the connecting rod 82 is located in the middle of the inner gear 71 and is hinged on the adjustment disk 52. The other end of the connecting rod 82 is inserted into the connecting sleeve 81. The connecting sleeve 81 can move on the connecting rod 82. One end of the connecting sleeve 81 away from the connecting rod 82 is hinged on the linkage gear 72. A connecting spring 811 is provided in the connecting sleeve 81. One end of the connecting spring 811 is fixed to the end of the connecting rod 82, and the other end is fixed to the inner wall of the connecting sleeve 81.

[0045] When the support rod 40 is rotated by the horizontal deflection of the high-speed railway bridge, the linkage gear 72 pulls the connecting sleeve 81 to move, so that the connecting rod 82 and the connecting sleeve 81 rotate together as a whole, and the connecting sleeve 81 also moves on the connecting rod 82, so that the connecting spring 811 is stretched. At this time, the connecting spring 811 is deformed, which plays a buffering role for the horizontal deflection caused by the vibration of the high-speed railway bridge, reduces the impact force of the vibration of the high-speed railway bridge, and improves the stability of the support beam support structure for the high-speed railway bridge. When one of the support rods 40 rotates, driven by the linkage assembly 70, all the support rods 40 on the same adjustment disk 52 rotate synchronously, that is, all the connecting springs 811 work together to improve the buffering effect.

[0046] The implementation principle of a high-speed railway beam support structure in an embodiment of the present application is as follows: when the high-speed railway bridge vibrates, the high-speed railway bridge applies pressure to the support block 21, causing the support spring 22 to deform, thereby absorbing kinetic energy. At this time, the support spring 22 generates a reverse elastic force, pushing the high-speed railway bridge to return to its original position. In this process, the kinetic energy of the object will be continuously converted into potential energy, and then from potential energy to kinetic energy. The spring absorbs and releases this part of energy, so that the vibration of the high-speed railway bridge gradually decays, thereby achieving the effect of reducing the amplitude and frequency of the vibration of the high-speed railway bridge and improving the overall stability and safety.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high-speed railway joist support structure, characterized in that: The invention comprises a bridge pier (90), a support beam (110) and a plurality of support seats (10), wherein the bridge pier (90) is arranged vertically, the support beam (110) is arranged horizontally and fixed on the top of the bridge pier (90), the support seat (10) is arranged on the support beam (110), and a plurality of the support seats (10) are arranged at intervals along the length direction of the support beam (110), the top end of the support seat (10) is connected to the high-speed railway bridge, and a buffer component (20) is provided on the support seat (10).

2. The high-speed railway joist support structure according to claim 1, characterized in that: The buffer assembly (20) comprises a support block (21) and a support spring (22); a mounting hole (11) is provided on the top wall of the support seat (10); the support block (21) is inserted into the mounting hole (11) and can move up and down in the mounting hole (11); the support block (21) abuts against the high-speed railway bridge; the support spring (22) is arranged in the mounting hole (11), and the support spring (22) is connected to the support block (21) and is used to drive the support block (21) to move upward.

3. The high-speed railway joist support structure according to claim 2, characterized in that: A limit block (211) is provided on the side wall of the support block (21); a limit slot (12) is provided on the inner wall of the mounting hole (11) in a vertical direction; the limit block (211) is inserted into the limit slot (12) and is movable in the limit slot (12); the support spring (22) is located in the limit slot (12) and below the limit block (211); one end of the support spring (22) is fixed to the limit block (211), and the other end is fixed to the inner wall of the limit slot (12).

4. The high-speed railway joist support structure according to claim 2, characterized in that: A cavity (14) is provided in the support seat (10), the cavity (14) is located below the mounting hole (11) and is connected via a connecting hole (13), a shock absorbing assembly (30) is provided in the cavity (14), the shock absorbing assembly (30) comprises a magnetic ring (31) and a magnetic ball (32), the magnetic ring (31) is fixed on the inner wall of the cavity (14), the magnetic ball (32) is arranged in the cavity (14), the magnetic ball (32) and the magnetic ring (31) repel each other, and the magnetic ring (31) is used to insert the magnetic ball (32) into the connecting hole (13).

5. The high-speed railway joist support structure according to claim 2, characterized in that: The support seat (10) is provided with a plurality of support rods (40), the support rods (40) are vertically arranged, and the top ends of the support rods (40) are fixed to the high-speed railway bridge. The support seat (10) is provided with an adjustment component (50), and the adjustment component (50) is connected to the support rods (40) and is used to drive the support rods (40) to move up and down.

6. The high-speed railway joist support structure according to claim 5, characterized in that: The adjusting assembly (50) comprises an adjusting rod (51) and an adjusting disk (52); the adjusting rod (51) passes through the supporting seat (10) and is rotatably connected to the supporting seat (10); the adjusting disk (52) is located in the supporting seat (10); the bottom end of the supporting rod (40) is arranged on the adjusting disk (52); the adjusting disk (52) is sleeved on the adjusting rod (51) and is threadedly connected to the adjusting rod (51); the adjusting rod (51) rotates to enable the adjusting disk (52) to move up and down.

7. The high-speed railway joist support structure according to claim 6, characterized in that: The support beam (110) is provided with a rotating assembly (60) for driving a plurality of adjusting rods (51) to rotate synchronously. The rotating assembly (60) comprises a rotating rack (61) and a plurality of rotating gears (62). The bottom end of the adjusting rod (51) is inserted into the support beam (110). The rotating rack (61) is inserted on the support beam (110) and can move along the length direction of the support beam (110). The plurality of rotating gears (62) correspond to the adjusting rods (51) one by one. The rotating gears (62) are coaxially sleeved on the corresponding adjusting rods (51), and the rotating gears (62) are fixed to the adjusting rods (51). The rotating gears (62) are meshed with the rotating racks (61).

8. The high-speed railway joist support structure according to claim 6, characterized in that: The adjusting disk (52) is provided with a linkage assembly (70), and the linkage assembly (70) comprises an internal gear (71) and a plurality of linkage gears (72). The internal gear (71) is rotatably connected to the adjusting disk (52), and the bottom end of the support rod (40) is rotatably connected to the adjusting disk (52). The plurality of linkage gears (72) correspond to the support rod (40) one by one. The linkage gear (72) is coaxially sleeved on the support rod (40) and fixed to the support rod (40), and the linkage gear (72) is meshed with the internal gear (71).

9. The high-speed railway joist support structure according to claim 8, characterized in that: The linkage gear (72) is connected to the adjustment disk (52) via a connection assembly (80). The connection assembly (80) comprises a connection sleeve (81) and a connection rod (82). One end of the connection rod (82) is located in the middle of the internal gear (71) and is hinged on the adjustment disk (52). The other end of the connection rod (82) is inserted into the connection sleeve (81). The connection sleeve (81) can move on the connection rod (82). One end of the connection sleeve (81) away from the connection rod (82) is hinged on the linkage gear (72).

10. The high-speed railway joist support structure according to claim 9, characterized in that: The connecting sleeve (81) is provided with a connecting spring (811), one end of the connecting spring (811) is fixed to the end of the connecting rod (82), and the other end is fixed to the inner wall of the connecting sleeve (81).

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