Novel vibration reduction track structure

Abstract

The utility model provides a novel vibration reduction track structure which is characterized in that an assembly groove is formed above a base, and a floating slab is assembled in the assembly groove; the multiple transverse limiting devices are distributed on the two sides of the floating plate and abut against the inner wall of the assembling groove in a sliding fit mode so as to limit and buffer transverse displacement of the floating plate; a plurality of longitudinal limiting devices are distributed in the floating plate, downwards extend out of the floating plate and then abut against the bottom face of the assembling groove, so that longitudinal displacement of the floating plate is limited and buffered; the floating slab is buffered in the horizontal direction and the longitudinal direction through the transverse limiting device and the longitudinal limiting device, vibration generated when a subway travels is buffered and absorbed through the buffering pieces, then damage of impact energy to the rail is avoided, the service life of the rail is prolonged, the anti-seismic capacity of the rail to the subway travels is improved, and the service life of the rail is prolonged. And the buffering efficiency of the subway track is ensured, so that the long-term use of the track is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of subway tracks, and particularly relates to a novel vibration damping track structure. Background Art

[0002] Urban rail transit has developed rapidly as a new mode of transportation. During subway operation, the tracks are used most frequently. Due to the relatively long subway lines, it is difficult to repair and maintain them. In order to improve the inspection efficiency of subway tracks, in the prior art, a detachable floating slab is provided on the subway track base. When the subway runs on the track, strong vibrations will be generated. A certain amount of vibration impact energy will be generated during the contact process between the wheels and the track, which will cause damage to the track, and then affect the service life of the track, which is not conducive to the long-term use of subway tracks.

[0003] Therefore, an improved technical solution is needed to address the deficiencies of the above prior art. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies in the above prior art, and the utility model provides a novel vibration damping track structure.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A novel vibration damping track structure, comprising:

[0007] A base, an assembly groove is provided above the base, and a floating slab is assembled inside the assembly groove;

[0008] A lateral limiting device, a plurality of the lateral limiting devices are distributed on both sides of the floating slab, and the lateral limiting device abuts against the inner wall of the assembly groove in a sliding fit manner to limit and buffer the lateral displacement of the floating slab;

[0009] A longitudinal limiting device, a plurality of the longitudinal limiting devices are distributed inside the floating slab and extend downward out of the floating slab and abut against the bottom surface of the assembly groove to limit and buffer the longitudinal displacement of the floating slab;

[0010] The longitudinal limiting device includes a sleeve and a buffer member. The sleeve is embedded in the floating slab, and both ends of the sleeve extend to the upper and lower surfaces of the floating slab respectively. A cover plate is detachably connected to the upper end of the sleeve, and a buffer member extending downward to the bottom surface of the assembly groove is provided inside the sleeve.

[0011] Preferably, at least one flange is provided on the outer wall of the sleeve, and the flange is embedded in the floating slab.

[0012] Preferably, a stepped platform corresponding to the cover plate is provided at the upper end of the sleeve, and the sleeve is fixed on the stepped platform by a plurality of bolts.

[0013] Preferably, a positioning seat corresponding to the buffer member is fixed on the bottom surface of the assembly groove. The buffer member is a spring, and a lower positioning platform extending into the lower end of the buffer member is provided in the middle of the positioning seat.

[0014] Preferably, an upper positioning platform corresponding to extending into the upper end of the buffer member is provided on the lower surface of the cover plate.

[0015] Beneficial effects: The floating slab is buffered horizontally and longitudinally by the lateral limiting device and the longitudinal limiting device, and the buffer member absorbs energy by buffering the vibration generated during subway operation, thereby avoiding damage to the track caused by impact energy, improving the service life of the track, further improving the seismic resistance of the track during subway operation, ensuring the buffering efficiency of the subway track, and thus ensuring the long-term use of the track. The noise during subway operation is reduced, noise pollution is avoided, the living environment of residents around the subway is protected, and thus the diverse functionality of the buffer is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. Among them:

[0017] Figure 1 is a schematic assembly diagram of the lateral limiting device in a specific embodiment provided by the present invention;

[0018] Figure 2 is Figure 1 a sectional view taken along line A-A in

[0019] Figure 3 is Figure 1 a sectional view taken along line B-B in

[0020] Figure 4 is a structural schematic diagram of the lateral limiting device in a specific embodiment provided by the present invention.

[0021] In the figure: 1, base; 2, floating slab; 3, sleeve; 4, cover plate; 5, lateral limiting device; 6, positioning seat; 7, buffer member; 501, base; 502, sliding seat; 503, telescopic guide rod; 504, buffer sleeve; 505, stopper; 506, ball. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions in the embodiments of the present utility model will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model belong to the scope of protection of the present utility model.

[0023] In the description of the present utility model, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and does not require the present utility model to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present utility model. The terms "connected" and "coupled" used in the present utility model should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] The present utility model will be described in detail below with reference to the drawings and in combination with embodiments. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0025] As Figures 1-4 shown, a novel vibration damping track structure is provided with an assembly groove corresponding to the floating slab 2 above the subway track. The width and thickness of the floating slab 2 are adapted to the width and thickness of the assembly groove. A plurality of lateral limiting devices 5 are provided on both sides of the floating slab 2. The plurality of lateral limiting devices 5 are distributed on both sides of the floating slab 2. The lateral limiting devices 5 are in sliding contact with the inner wall of the assembly groove to limit and buffer the lateral displacement of the floating slab 2. Generally, not less than three lateral limiting devices 5 are provided on each side of each floating slab 2.

[0026] Inside the floating slab 2, there is a longitudinal limiting device. A plurality of longitudinal limiting devices are evenly distributed circumferentially around the floating slab 2, and the number can be 6 - 8. Or two rows of longitudinal limiting devices are distributed on both sides of the floating slab 2 and extend downward beyond the floating slab 2 and abut against the bottom surface of the assembly groove to limit and buffer the longitudinal displacement of the floating slab 2. Through buffering, the vibration generated during subway operation is buffered and energy-absorbed, thereby avoiding damage to the track caused by impact energy, improving the service life of the track, and further improving the earthquake resistance of the track during subway operation. The longitudinal limiting device includes a sleeve 3 and a buffer member 7. The sleeve 3 is a metal cylinder with open ends at both ends. The sleeve 3 is embedded in the floating slab 2 during the casting process of the floating slab 2, and both ends of the sleeve 3 extend to the upper and lower surfaces of the floating slab 2 respectively. A cover plate 4 is detachably connected to the upper end of the sleeve 3, and the cover plate 4 seals the upper end of the sleeve 3, so that the buffer member 7 can be placed in the sleeve 3. The buffer member 7 can elastically expand and contract longitudinally for buffering. One end of the buffer member 7 abuts against the lower surface of the cover plate 4, and the other end extends downward and abuts against the bottom surface of the assembly groove.

[0027] In an alternative embodiment, at least one flange is provided on the outer wall of the sleeve 3. The flange is fixedly welded to the sleeve 3 and is located in the middle of the outer wall of the sleeve 3. The flange is embedded in the floating slab 2 to increase the fixing ability and stability of the sleeve 3.

[0028] A stepped platform is provided at the upper end of the inner cavity of the sleeve 3 for supporting the cover plate 4. The sleeve 3 is fixed to the stepped platform by a plurality of bolts. The distance from above the stepped platform to the sleeve 3 is greater than the thickness of the cover plate 4, so that the position of the cover plate 4 can be adjusted as needed, thereby meeting the fine adjustment of the floating slab 2.

[0029] In another embodiment, the buffer member 7 can be a hydraulic jack. By lifting the shock absorber of the entire floating slab 2, the purpose of shock absorption upgrade can be achieved. At this time, eccentric holes are provided on the cover plate 4 in an eccentric distribution, and the pipeline of the hydraulic jack extends upward through the eccentric holes to the cover plate 4, so as to meet the installation and control of the hydraulic jack.

[0030] In another alternative embodiment, the buffer member 7 is a spring. The diameter of the spring is adapted to the inner diameter of the sleeve 3. A positioning seat 6 corresponding to the buffer member 7 is fixed on the bottom surface of the assembly groove. The positioning seat 6 can be fixed to the base 1 by means of embedded casting, or can be fixed to the base 1 by expansion bolts or embedded bolts. A lower positioning platform extending into the lower end of the buffer member 7 is provided in the middle of the positioning seat 6. The outer diameter of the lower positioning platform is adapted to the inner diameter of the spring. An upper positioning platform corresponding to extending into the upper end of the buffer member 7 is provided on the lower surface of the cover plate 4. The sum of the lengths of the two positioning platforms is less than the length of the sleeve 3, so as to position and fix the buffer member 7 through the two positioning platforms.

[0031] In this embodiment, the lateral limiting device 5 includes a base 501, a buffer sleeve 504, and a sliding seat 502. The base 501 is a square metal plate, which is fixed to the side wall of the floating slab 2. Multiple screw holes are provided at the corners of the base 501, and it is fixedly connected to the floating slab 2 through embedded bolts or expansion bolts. An expansion guide rod 503 pointing towards the inner wall of the base 1 in the horizontal direction is provided on the base 501. The expansion guide rod 503 restricts the buffering direction of the lateral limiting device 5, ensuring that the lateral limiting device 5 expands and contracts along the width direction of the floating slab 2, thereby ensuring the force on the floating slab 2. The buffer sleeve 504 is sleeved on the outer wall of the expansion guide rod 503. The expansion guide rod 503 expands and contracts in the width direction of the floating slab 2. A stop member 505 corresponding to the end of the buffer sleeve 504 away from the base 501 is provided on the outer wall of the expansion guide rod 503, so that the buffer sleeve 504 acts on the expansion guide rod 503 with the buffering force. The sliding seat 502 is fixed to the inner wall of the base 1. The inner wall of the base 1 is the longitudinal surface corresponding to the floating slab 2. The sliding seat 502 faces the expansion guide rod 503, thereby padding the expansion guide rod 503. In order to reduce friction, the side of the sliding seat 502 corresponding to the expansion guide rod 503 is a rolling surface, and the rolling surface can be slidably matched with the expansion guide rod 503, so that no force is generated on the buffer sleeve 504 during the longitudinal displacement process, and the expansion guide rod 503 will not be damaged.

[0032] In an alternative embodiment, the sliding seat 502 is a square metal plate. Screw holes are provided at the corners of the sliding seat 502, and it is fixed to the inner wall of the base 1 through embedded bolts or expansion bolts. A plurality of ball grooves are arranged in an array on the rolling surface. The ball grooves are hemispherical. Ball bearings 506 are assembled in the ball grooves. After the ball bearings 506 protrude from the rolling surface, they abut against the expansion guide rod 503. In order to ensure the limitation of the ball bearings 506, a positioning plate is provided on the sliding seat 502. The positioning plate is adapted to the shape of the sliding seat 502. Through holes corresponding to the ball bearings 506 (slightly smaller than the ball bearings 506) are provided on the positioning plate. The positioning plate is fixed to the sliding seat 502, so that the ball bearings 506 protrude from the positioning plate and are fixed by the positioning plate, ensuring the stable assembly of the ball bearings 506 during use. Lubricating oil is provided between the ball bearings 506 and the ball grooves.

[0033] In this embodiment, the gap between two adjacent ball bearings 506 is smaller than the diameter of the expansion guide rod 503, so as to ensure that there is always a ball bearing 506 abutting against the end of the expansion guide rod 503 at any position, thereby ensuring the rolling friction of the expansion guide rod 503 at all times.

[0034] In this embodiment, an external thread is provided on the outer wall of the telescopic guide rod 503, and the stop member 505 is threadedly assembled on the telescopic guide rod 503. The length of the buffer elastic and lateral limiting device 5 can be limited according to the actual situation, so as to ensure the assembly accuracy. The buffer sleeve 504 is a spring, and its elasticity can be selected according to actual needs. The two stop members 505 that are in close contact with each other correspond to stop the buffer sleeve 504. The stop member 505 is a circular plate, and a notch or a hexagonal outer wall structure is provided at its edge.

[0035] In an alternative embodiment, the telescopic guide rod 503 is a piston tube. An installation groove corresponding to the limiting device is provided on the side of the floating plate 2. An external thread corresponding to the stop member 505 is provided on the outer wall of the main body of the piston tube. The piston rod of the piston tube is fixed on the base 501, so as to achieve fixation.

[0036] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A novel vibration damping track structure, characterized in that, Comprising: A base, an assembly groove is provided above the base, and a floating plate is assembled inside the assembly groove; Lateral limiting devices, a plurality of the lateral limiting devices are distributed on both sides of the floating plate, and the lateral limiting devices are in sliding contact with the inner wall of the assembly groove to limit and buffer the lateral displacement of the floating plate; Longitudinal limiting devices, a plurality of the longitudinal limiting devices are distributed inside the floating plate and extend downward out of the floating plate and then contact the bottom surface of the assembly groove to limit and buffer the longitudinal displacement of the floating plate; The longitudinal limiting device includes a sleeve and a buffer member, the sleeve is embedded in the floating plate, and both ends thereof extend to the upper and lower surfaces of the floating plate respectively. A cover plate is detachably connected to the upper end of the sleeve, and a buffer member extending downward to the bottom surface of the assembly groove is provided inside the sleeve.

2. The novel vibration damping track structure according to claim 1, characterized in that, At least one flange is provided on the outer wall of the sleeve, and the flange is embedded in the floating plate.

3. The novel vibration damping track structure according to claim 1, wherein A stepped platform corresponding to the cover plate is provided at the upper end of the sleeve, and the sleeve is fixed on the stepped platform by a plurality of bolts.

4. The novel vibration damping track structure according to claim 1, characterized in that, A positioning seat corresponding to the buffer member is fixed on the bottom surface of the assembly groove, the buffer member is a spring, and a lower positioning platform extending into the lower end of the buffer member is provided in the middle of the positioning seat.

5. The novel vibration damping track structure according to claim 4, characterized in that, An upper positioning platform corresponding to extending into the upper end of the buffer member is provided on the lower surface of the cover plate.

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