阅读说明：本技术 一种具有减震功能的高速列车稳定轨道 (High-speed train stable track with shock-absorbing function ) 是由 陈国勇 唐果 吴春苗 陈国武 于 2021-08-20 设计创作，主要内容包括：本发明公开了一种具有减震功能的高速列车稳定轨道,属于轨道交通技术领域中的一种减震轨道,其技术方案为包括混凝土底座,沿混凝土底座长度方向上均布设置的多个轨枕,所述轨枕在两端对称设置有第一减震单元组件,设置在第一减震单元组件上端的轨道单元,相邻的两个轨枕之间设置有第二减震单元组件,所述第二减震单元组件上端设置的承托板与前后相邻的两个轨道单元支撑连接；本发明提供一种具有减震功能的高速列车稳定轨道,使得轨道单元在竖直方向、横向方向和前后方向上均具有减震的功能和效果,并且可以对相邻的两个轨道单元进行在列车行驶过程中挤压的位置调节。(The invention discloses a high-speed train stable track with a damping function, which belongs to a damping track in the technical field of track traffic, and adopts the technical scheme that the high-speed train stable track comprises a concrete base and a plurality of sleepers uniformly distributed along the length direction of the concrete base, wherein the two ends of each sleeper are symmetrically provided with a first damping unit assembly, a track unit arranged at the upper end of the first damping unit assembly, a second damping unit assembly is arranged between every two adjacent sleepers, and a bearing plate arranged at the upper end of the second damping unit assembly is in supporting connection with the front and back adjacent track units; the invention provides a high-speed train stable track with a damping function, which enables track units to have the damping function and effect in the vertical direction, the transverse direction and the front-back direction, and can adjust the extruding position of two adjacent track units in the running process of a train.)

1. The utility model provides a high-speed train stable track with shock-absorbing function, includes concrete foundation (1), along a plurality of sleepers (2) that concrete foundation (1) length direction went up the equipartition and set up, its characterized in that, sleeper (2) are provided with first shock attenuation unit subassembly (3) at both ends symmetry, set up in track unit (4) of first shock attenuation unit subassembly (3) upper end, are provided with second shock attenuation unit subassembly (5) between two adjacent sleepers (2), two adjacent track unit (4) support connection around and support board (6) that second shock attenuation unit subassembly (5) upper end set up.

2. The high-speed train stabilizing track with the shock absorption function as claimed in claim 1, wherein the first shock absorption unit assembly (3) comprises a movable installation groove (7) arranged on the sleeper (2), a shock absorption support assembly (8) arranged in the movable installation groove (7), and a support main shaft (9) arranged at the upper end of the shock absorption support assembly (8) is fixedly connected with the bottom of the track unit (4); the shock-absorbing support assembly (8) comprises a transverse auxiliary shock-absorbing unit (10) and a vertical shock-absorbing unit (11).

3. The high-speed train stabilizing track with the shock absorption function as claimed in claim 2, wherein the movable installation groove (7) comprises a main trough body (12), and an auxiliary trough body (13) which is communicated with the main trough body (12) and is arranged below the main trough body (12); the shock absorption supporting component (8) further comprises a supporting base (14) and a guide main shaft (15) arranged at the lower end of the supporting base (14); support base (14) lower extreme arrange in main cell body (12) and with the lateral wall separation setting of main cell body (12), horizontal supplementary shock attenuation unit (10) are provided with two along direction main shaft (15) central axis symmetry, horizontal supplementary shock attenuation unit (10) include with articulated bumper shock absorber (16) that set up in support base (14) bottom, the other end and the articulated setting in main cell body (12) bottom of bumper shock absorber (16), bumper shock absorber (16) slope setting in main cell body (12).

4. The high-speed train stabilizing track with the shock absorption function as claimed in claim 3, wherein the vertical shock absorption unit (11) comprises a sliding groove (17) which is arranged at the lower end of the auxiliary groove body (13) and is communicated with the auxiliary groove body (13), the diameter of the sliding groove (17) is smaller than that of the auxiliary groove body (13), a limit plate (18) is arranged at the upper part of the guide main shaft (15), and the bottom of the guide main shaft (15) is arranged in the sliding groove (17); be provided with damping spring (19) in vice cell body (13), damping spring (19) cover is established in direction main shaft (15) outside, limiting plate (18) and vice cell body (13) bottom plate are arranged in damping spring (19).

5. The high-speed train stabilizing track with the shock absorption function as claimed in claim 3 or 4, wherein two protection plates (20) are symmetrically arranged on the supporting base (14) along the transverse direction of the sleeper (4), a limiting step (21) is arranged at the upper end of the main trough body (12), and the protection plates (20) are arranged above the limiting step (21).

6. The high-speed train stable track with the shock absorption function as claimed in any one of claims 1 to 4, wherein the second shock absorption unit assembly (5) further comprises a shock absorption main shaft (22) fixedly connected between two sleepers (4) adjacent to each other in front and back, inclined support rods (23) symmetrically hinged to the lower end of the bearing plate (6), the other ends of the two inclined support rods (23) are hinged to the end portions of the two adjacent sleepers (4), and a shock absorption auxiliary shaft (24) is hinged between the two inclined support rods (23); symmetrical inclined support connecting rods (25) are hinged between the damping auxiliary shaft (24) and the damping main shaft (22).

7. The high-speed train stabilizing track with the shock absorption function is characterized in that the number of the inclined supporting rods (23) is two in the diameter direction of one side of the shock absorption auxiliary shaft (24), and the two inclined supporting rods (23) are hinged with a transverse connecting shaft (26) arranged at the end part of the shock absorption auxiliary shaft (24); the upper ends of the two inclined supporting rods (23) are hinged with connecting plates (27) symmetrically arranged on two sides of the lower end of the bearing plate (6).

8. The high-speed train stabilizing track with the shock absorption function as claimed in claim 7, wherein the shock absorption main shaft (22) comprises two sleeves (28), a shaft core rod (29) arranged in the two sleeves (28), and a telescopic spring (30) sleeved on the shaft core rod (29), wherein the telescopic spring (30) is arranged between the two sleeves (28).

9. The high speed train stabilizing track with a shock-absorbing function according to claim 8, wherein an extension line of a center axis of the tilting support rod (23) is arranged to cross an extension line of a center axis of the tilting support link (25).

10. The high-speed train stabilizing track with the shock absorption function as claimed in claim 6, wherein the lower ends of two adjacent track units (4) are slidably sleeved on the end of the bearing plate (6).

Technical Field

The invention belongs to the technical field of rail transit, and particularly relates to a high-speed train stable rail with a damping function.

Background

With the development of social economy and the progress of science and technology, various traffic lines (such as subways, light rails, viaducts and the like) in different forms appear rapidly like bamboo shoots in spring after rain, and although the traffic pressure is greatly relieved by the appearance of rail traffic, the environmental problems are gradually increased. The rail transit has more and more important functions in urban transportation, vibration generated when a train runs on a rail will affect the service life of the rail, and a shock absorption pad is usually laid at the bottom of the rail to absorb shock.

The railway subgrade is a structure for bearing and transmitting the gravity of the track and the dynamic action of the train, is the foundation of the track and is an important building for ensuring the running of the train. The roadbed is a soil-rock structure, is in various landforms, geology, hydrology and climatic environments, and sometimes suffers from various disasters such as flood, debris flow, collapse, earthquake and the like. Along with the rapid development of economy and society, the freight volume of railway passenger is also greatly increased, and the transport capacity of a large part of existing railways is not suitable for the requirement of transportation increase, and energy expansion transformation is required. However, in the field of expanding existing lines, new problems must arise in which an increase in vibration is inevitable. After the circuit can be expanded and transformed, larger vibration is inevitably caused due to the lifting of the load and the speed.

Therefore, when a train runs on the track, the vibration between the train and the track is reduced, the running stability of the train is improved, and the service life of the track and the train is also an important condition, so that the technical problem to be solved by the prior art is to reduce the vibration when the train runs on the track.

Disclosure of Invention

The invention aims to provide a high-speed train stable track with a damping function, wherein a first damping unit assembly is arranged on sleepers uniformly distributed on a concrete base to support a track unit in a damping mode, and two adjacent sleepers in the front and back are connected in a damping mode through a second damping unit assembly, so that the track unit has a damping function and effect in the vertical direction, the transverse direction and the front and back direction, and the extrusion position of the two adjacent track units in the running process of a train can be adjusted.

The invention aims to realize the purpose, which comprises a concrete base and a plurality of sleepers uniformly distributed along the length direction of the concrete base, wherein the sleepers are symmetrically provided with first damping unit assemblies at two ends, a track unit is arranged at the upper end of each first damping unit assembly, a second damping unit assembly is arranged between two adjacent sleepers, and a bearing plate arranged at the upper end of each second damping unit assembly is in supporting connection with two adjacent track units in the front and at the back.

The invention has the beneficial effects that:

1. according to the invention, a plurality of sleepers are uniformly distributed in the length direction of the concrete base, and two symmetrical first damping unit assemblies are arranged at the upper ends of the sleepers to perform damping support on the track unit, so that the damping support function of the track unit in the transverse direction and the vertical direction is realized, and the stability of the track unit supported by the upper ends of the first damping unit assemblies in the running process of a train is ensured; furthermore, set up the second shock attenuation unit subassembly between two adjacent sleepers in front and back and carry out shock attenuation formula buffering and support, when making the interval between two adjacent sleepers in front and back take place certain change, also can guarantee that the bearing board that the second shock attenuation unit subassembly upper end set up is in same level, carry out stable shock attenuation to two adjacent track units and support for two adjacent track units have slight deformation space and stable shock attenuation and support, strengthen the stability when the train traveles between a plurality of track units from this.

2. According to the invention, the movable mounting groove is formed in the sleeper, the shock absorption support component in the first shock absorption unit component is arranged in the movable mounting groove for stable shock absorption support, and the shock absorption support component is arranged in the transverse auxiliary shock absorption unit and the vertical shock absorption unit, so that the first shock absorption unit component integrally has shock absorption support effects in the transverse direction and the vertical direction, and therefore, the shock absorption type support function of the first shock absorption unit component on the upper end of the track unit is ensured.

3. According to the invention, as the main groove body and the auxiliary groove body which are communicated are sequentially arranged in the movable mounting groove from top to bottom, the lower part of the supporting base is arranged in the main groove body, so that the supporting base has a transverse and vertical buffer stroke space in the main groove body, and a guide main shaft at the lower end of the supporting base guides and positions the whole in the vertical direction, thereby ensuring the positioning and guiding of the whole buffer shock absorption; two bumper shock absorbers that the slope symmetry set up realize supporting the ascending shock attenuation of base in the transverse direction, through the vertical shock attenuation unit on the support base below and the cooperation shock attenuation of two horizontal supplementary shock attenuation units of symmetry, have guaranteed whole absorbing stability.

4. According to the invention, the communicated sliding groove is arranged at the lower end of the auxiliary groove body, and the diameter of the sliding groove is smaller than that of the auxiliary groove body, so that when the bottom of the guide main shaft is arranged in the sliding groove, the guide main shaft can have a certain buffering stroke function under the guide effect of the sliding groove, and further, the damping spring in the auxiliary groove body is sleeved on the guide main shaft and provides a motion mechanism of up-and-down telescopic buffering of the guide main shaft under the limiting effect between the limiting plate and the auxiliary groove body bottom plate.

5. According to the invention, the two protection plates are symmetrically arranged on the support base along the transverse direction of the sleeper, and the limiting step is arranged at the upper end of the main groove body and is matched with the two protection plates for installation, so that the reserved gap and space of the support base in the process of buffering and offsetting can be effectively protected under the action of the two protection plates, the pollution to parts in the movable installation groove is reduced, the protection can be improved, and the service life is longer.

6. According to the invention, a second damping unit assembly is arranged between two adjacent sleepers in front and back, and a damping main shaft directly cushions and supports the two sleepers, so that an inclined support rod supports an upper bearing plate, the two inclined support rods are in damping connection through a horizontal damping auxiliary shaft, and the damping auxiliary shaft and a damping main shaft support are hinged to form symmetrical inclined support connecting rods; therefore, when the damping main shaft is in a compression state, the rotation of the two symmetrical inclined supporting rods enables the bearing plate to generate lifting acting force; at the moment, the inclined support connecting rod has a downward pressing acting force on the damping auxiliary shaft, so that the damping auxiliary shaft is compressed and descended, under the acting force of the damping auxiliary shaft, the rotation of the two symmetrical inclined support rods is counteracted, after the acting force for lifting of the bearing plate is counteracted, the bearing plate is kept at the same horizontal position to stably support the guide rail unit, and therefore after the damping between the front and rear adjacent sleepers is realized, the stable support of the bearing plate on the same horizontal plane can be realized, and the stable support damping effect among the plurality of track units is ensured.

7. In the invention, the extension lines of the central shafts of the inclined support rods and the extension lines of the central shafts of the inclined support connecting rods are arranged in a crossed manner, so that the acting force between the inclined support rods and the inclined support connecting rods can stably maintain the positions of the two symmetrical inclined support rods, and the bearing plate can stably support the track unit at the same height in a horizontal manner.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic cross-sectional view of a sleeper and concrete foundation of the present invention taken in the width direction;

FIG. 2 is a schematic view of the internal structure of the first shock absorbing unit assembly according to the present invention;

FIG. 3 is a schematic view of the connection between a plurality of ties in a second shock absorbing unit assembly according to the present invention;

FIG. 4 is a schematic view of the connection of the shock-absorbing auxiliary shaft and the transverse connecting shaft of the present invention;

FIG. 5 is a schematic structural view of the damping spindle of the present invention;

FIG. 6 is a schematic view of the connection between the bearing plate and the connecting plate of the present invention.

In the attached drawings, 1-a concrete base, 2-a sleeper, 3-a first damping unit component, 4-a track unit, 5-a second damping unit component, 6-a bearing plate, 7-a movable installation groove, 8-a damping support component, 9-a support main shaft, 10-a transverse auxiliary damping unit, 11-a vertical damping unit, 12-a main groove body, 13-an auxiliary groove body, 14-a support base, 15-a guide main shaft, 16-a damper, 17-a sliding groove, 18-a limiting plate, 19-a damping spring, 20-a protecting plate, 21-a limiting step, 22-a damping main shaft, 23-an inclined support rod, 24-a damping auxiliary shaft, 25-an inclined support connecting rod, 26-a transverse connecting shaft and 27-a connecting plate, 28-sleeve, 29-axle core bar, 30-expansion spring.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.

A high-speed train stable track with a shock absorption function comprises a concrete base 1 and a plurality of sleepers 2 uniformly distributed along the length direction of the concrete base 1, wherein first shock absorption unit assemblies 3 are symmetrically arranged at two ends of each sleeper 2, a track unit 4 is arranged at the upper end of each first shock absorption unit assembly 3, a second shock absorption unit assembly 5 is arranged between every two adjacent sleepers 2, and a bearing plate 6 arranged at the upper end of each second shock absorption unit assembly 5 is in supporting connection with the two track units 4 adjacent to each other in the front and back; the multiple sleepers 2 are uniformly distributed in the length direction of the concrete base 1, and the two symmetrical first damping unit assemblies 3 are arranged at the upper ends of the sleepers 2 to damp and support the track unit 4, so that the damping and supporting functions of the track unit 4 in the transverse direction and the vertical direction are realized, and the stability of the track unit 4 supported at the upper ends by the first damping unit assemblies 3 in the running process of a train is ensured; further, set up second shock attenuation unit subassembly 5 between two adjacent sleepers 2 in front and back and carry out shock attenuation formula buffering and support, when making the interval between two adjacent sleepers 2 in front and back take place certain change, also can guarantee that bearing plate 6 that second shock attenuation unit subassembly 5 upper end set up is in same level, carry out stable shock attenuation to two adjacent track units 4 and support, make two adjacent track units 4 have slight deformation space and stable shock attenuation and support, strengthen the stability when the train traveles between a plurality of track units 4 from this.

The first damping unit component 3 comprises a movable mounting groove 7 arranged on the sleeper 2 and a damping support component 8 arranged in the movable mounting groove 7, and a support main shaft 9 arranged at the upper end of the damping support component 8 is fixedly connected with the bottom of the track unit 4; the shock absorption support assembly 8 comprises a transverse auxiliary shock absorption unit 10 and a vertical shock absorption unit 11; set up movable mounting groove 7 in sleeper 2 to with the shock attenuation supporting component 8 installation setting in first shock attenuation unit subassembly 3 carry out stable shock attenuation in movable mounting groove 7 and support, and make shock attenuation supporting component 8 at horizontal supplementary shock attenuation unit 10 and vertical shock attenuation unit 11, make first shock attenuation unit subassembly 3 whole have in the horizontal direction with the ascending shock attenuation support effect of vertical side, guaranteed from this that first shock attenuation unit subassembly 3 is whole to carry out the support function of shock attenuation formula to track unit 4 of upper end.

The movable installation groove 7 comprises a main groove body 12 and an auxiliary groove body 13 which is communicated with the main groove body 12 and is arranged below the main groove body 12; the shock absorption support assembly 8 further comprises a support base 14 and a guide main shaft 15 arranged at the lower end of the support base 14; the lower end of the supporting base 14 is arranged in the main groove body 12 and is separated from the side wall of the main groove body 12, two transverse auxiliary shock absorption units 10 are symmetrically arranged along the central axis of the guide main shaft 15, each transverse auxiliary shock absorption unit 10 comprises a shock absorber 16 hinged with the bottom of the supporting base 14, the other end of each shock absorber 16 is hinged with the bottom of the main groove body 12, and each shock absorber 16 is obliquely arranged in the main groove body 12; as the main groove body 12 and the auxiliary groove body 13 which are communicated with each other are sequentially arranged in the movable mounting groove 7 from top to bottom, the lower part of the supporting base 14 is arranged in the main groove body 12, so that the supporting base 14 has a transverse and vertical buffer stroke space in the main groove body 12, and a guide main shaft 15 at the lower end of the supporting base 14 guides and positions the whole body in the vertical direction, thereby ensuring the positioning and guiding of the whole buffer shock absorption; two shock absorbers 16 that the slope symmetry set up realize supporting the ascending shock attenuation of support base 14 in the transverse direction, through the cooperation shock attenuation of vertical shock attenuation unit 11 and two horizontal supplementary shock attenuation units 10 of symmetry on the support base 14 below, guaranteed whole absorbing stability.

The vertical damping unit 11 comprises a sliding groove 17 which is arranged at the lower end of the auxiliary groove body 13 and is communicated with the auxiliary groove body 13, the diameter of the sliding groove 17 is smaller than that of the auxiliary groove body 13, a limiting plate 18 is arranged at the upper part of the guide main shaft 15, and the bottom of the guide main shaft 15 is arranged in the sliding groove 17; a damping spring 19 is arranged in the auxiliary groove body 13, the damping spring 19 is sleeved outside the guide main shaft 15, and the damping spring 19 is arranged between the limiting plate 18 and the bottom plate of the auxiliary groove body 13; the lower end of the auxiliary groove body 13 is provided with a communicated sliding groove 17, and the diameter of the sliding groove 17 is smaller than that of the auxiliary groove body 13; therefore, when the bottom of the guide main shaft 15 is placed in the sliding groove 17, the guide main shaft 15 can have a certain buffer stroke function under the guiding action in the sliding groove 17.

Further, a damping spring 19 in the auxiliary groove body 13 is sleeved on the guide main shaft 15, and provides a motion mechanism of up-and-down telescopic buffering of the guide main shaft 15 under the limiting action between the limiting plate 18 and the bottom plate of the auxiliary groove body 13.

The support base 14 is symmetrically provided with two protection plates 20 along the transverse direction of the sleeper 4, the upper end of the main groove body 12 is provided with a limiting step 21, and the protection plates 20 are arranged above the limiting step 21; through at support base 14 along sleeper 2's horizontal direction on the symmetry be provided with two guard plates 20 to set up spacing step 21 and carry out the installation of looks adaptation with two guard plates 20 in the upper end of main cell body 12, make support base 14 can carry out effectual protection under two guard plates 20's effect in the clearance and the space of buffering skew in-process reservation, reduce from this and to improve the protection to the pollution of the part in the activity mounting groove 7, make and have longer life.

The second damping unit component 5 further comprises a damping main shaft 22 fixedly connected between the two front and rear adjacent sleepers 4, and inclined support rods 23 symmetrically hinged to the lower end of the bearing plate 6, the other ends of the two inclined support rods 23 are hinged to the end portions of the two adjacent sleepers 4, and a damping auxiliary shaft 24 is hinged between the two inclined support rods 23; symmetrical inclined support connecting rods 25 are hinged between the damping auxiliary shaft 24 and the damping main shaft 22; a second damping unit component 5 is arranged between two sleepers 2 adjacent to each other in front and back, and the damping main shaft 22 directly cushions and supports the two sleepers 2, so that the inclined support rod 23 supports the bearing plate 6 above, the two inclined support rods 23 are in damping connection through a horizontal damping auxiliary shaft 24, and the damping auxiliary shaft 24 and the damping main shaft 22 are hinged to form symmetrical inclined support connecting rods 25; thus, when the damper spindle 22 is in a compressed state, the rotation of the two symmetrical inclined support rods 23 generates a lifting force on the support plate 6; at this time, the inclined support link 25 has a downward pressing acting force on the auxiliary damping shaft 24, so that the auxiliary damping shaft 24 is compressed and lowered, and therefore, under the acting force of the auxiliary damping shaft 24, the rotation of the two symmetrical inclined support rods 23 is counteracted, and after the acting force generated by the lifting of the bearing plate 6 is counteracted, the bearing plate 6 is kept at the same horizontal position to stably support the guide rail unit; therefore, after the shock absorption between the two sleepers 2 adjacent to each other in the front and back is realized, the stable support of the bearing plate 6 on the same horizontal plane can be realized, and the stable support shock absorption effect among the plurality of track units 4 is ensured.

Two inclined support rods 23 are arranged in the diameter direction of one side of the auxiliary damping shaft 24, and the two inclined support rods 23 are hinged with a transverse connecting shaft 26 arranged at the end part of the auxiliary damping shaft 24; the upper ends of the two inclined support rods 23 are hinged with connecting plates 27 symmetrically arranged on two sides of the lower end of the bearing plate 6.

The damping spindle 22 comprises two sleeves 28, a spindle core rod 29 arranged in the two sleeves 28, and an extension spring 30 sleeved on the spindle core rod 29, wherein the extension spring 30 is arranged between the two sleeves 28.

The extension line of the central shaft of the inclined support rod 23 is crossed with the extension line of the central shaft of the inclined support connecting rod 25; the extension line of the central shaft of the inclined support rod 23 and the extension line of the central shaft of the inclined support connecting rod 25 are arranged in a crossed manner, so that the acting force between the inclined support rod 23 and the inclined support connecting rod 25 can stably maintain the positions of the two symmetrical inclined support rods 23, and the bearing plate 6 can stably support the track unit 4 at the same height and horizontally.

The lower ends of the two adjacent track units 4 are sleeved at the end part of the bearing plate 6 in a sliding manner; the lower ends of the two track units 4 are all slidably sleeved at the end part of the bearing plate 6, so that the track units have a deformation space when expanding with heat and contracting with cold, and the bearing plate 6 can stably support the track units.

The working principle and the working process of the invention are as follows:

according to the invention, a plurality of sleepers 2 are uniformly distributed in the length direction of the concrete base 1, and two symmetrical first damping unit assemblies 3 are arranged at the upper ends of the sleepers 2 to perform damping support on the track unit 4, so that the damping support function of the track unit 4 in the transverse direction and the vertical direction is realized, and the stability of the track unit 4 supported at the upper ends by the first damping unit assemblies 3 in the running process of a train is ensured.

Further, set up second shock attenuation unit subassembly 5 between two adjacent sleepers 2 in front and back and carry out shock attenuation formula buffering and support, when making the interval between two adjacent sleepers 2 in front and back take place certain change, also can guarantee that bearing plate 6 that second shock attenuation unit subassembly 5 upper end set up is in same level, carry out stable shock attenuation to two adjacent track units 4 and support, make two adjacent track units 4 have slight deformation space and stable shock attenuation and support, strengthen the stability when the train traveles between a plurality of track units 4 from this.

As the main groove body 12 and the auxiliary groove body 13 which are communicated with each other are sequentially arranged in the movable mounting groove 7 from top to bottom, the lower part of the supporting base 14 is arranged in the main groove body 12, so that the supporting base 14 has a transverse and vertical buffer stroke space in the main groove body 12, and a guide main shaft 15 at the lower end of the supporting base 14 guides and positions the whole body in the vertical direction, thereby ensuring the positioning and guiding of the whole buffer shock absorption; two shock absorbers 16 that the slope symmetry set up realize supporting the ascending shock attenuation of support base 14 in the transverse direction, through the cooperation shock attenuation of vertical shock attenuation unit 11 and two horizontal supplementary shock attenuation units 10 of symmetry on the support base 14 below, guaranteed whole absorbing stability.

The second damping unit assembly 5 is arranged between two sleepers 2 adjacent to each other in front and back, the damping main shaft 22 directly cushions and supports the two sleepers 2, the inclined supporting rods 23 support the bearing plate 6 above, the two inclined supporting rods 23 are in damping connection through the horizontal damping auxiliary shafts 24, the damping auxiliary shafts 24 are hinged with the damping main shaft 22 through symmetrical inclined supporting connecting rods 25, and therefore when the damping main shaft 22 is in a compression state, the bearing plate 6 is lifted by rotation of the two symmetrical inclined supporting rods 23; at this time, the inclined support link 25 has a downward pressing acting force on the auxiliary damping shaft 24, so that the auxiliary damping shaft 24 is compressed and lowered, and therefore, under the acting force of the auxiliary damping shaft 24, the rotation of the two symmetrical inclined support rods 23 is counteracted, and after the acting force generated by the lifting of the bearing plate 6 is counteracted, the bearing plate 6 is kept at the same horizontal position to stably support the guide rail unit; therefore, after the shock absorption between the two sleepers 2 adjacent to each other in the front and back is realized, the stable support of the bearing plate 6 on the same horizontal plane can be realized, and the stable support shock absorption effect among the plurality of track units 4 is ensured.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.