Vibration reduction sleeper for urban rail
By introducing shock-absorbing blocks and limiting structures into the sleepers, the vibration and noise problems of reinforced concrete sleepers have been solved, thereby improving the stability and comfort of the track and extending its service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-03-24
AI Technical Summary
The existing reinforced concrete sleepers lack noise reduction and vibration damping capabilities, causing rail vibrations to be transmitted to the track bed, generating noise and rail deformation, which affects the safety and riding experience of intercity rail transit.
The system employs shock-absorbing components, including shock-absorbing blocks and compression springs. The shock-absorbing blocks, made of wood-plastic composite material, absorb vibrations, and the limiting structure restricts the movement of the track mounting blocks to prevent displacement. Drainage holes are provided to remove moisture, thereby improving track stability and comfort.
It effectively absorbs vibrations from intercity rail lines, prevents track loosening, improves the stability and comfort of intercity rail transit, reduces noise, and extends the service life of sleepers.
Smart Images
Figure CN224031380U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to railway track technical field especially relates to a city rail is with damping sleeper. BACKGROUND
[0002] The sleeper is an important component of track structure, bears various acting forces from the rail, and elastically distributes the acting force to the ballast bed, while effectively maintaining the gauge of the track. The railway ballast is composed of gravel, mainly used for supporting the sleeper, and uniformly distributing the huge load from the upper part of the sleeper to the subgrade. However, there is no perfect fixing method at present, and the sleeper is only laid and compacted by workers. The early sleeper material is wood such as pine, and about 3 billion wooden sleepers were laid all over the world during the peak period of wooden sleeper use, which has good elasticity and noise reduction performance.
[0003] The sleeper in the prior art is usually made of reinforced concrete. The sleeper made of reinforced concrete lacks the excellent noise reduction and vibration reduction capability of the original pine sleeper. When the intercity rail transit passes, more high-frequency vibrations from the rail are transmitted to the ballast bed and the railway ballast, causing the railway ballast to produce relative displacement, thereby causing the rail to deform and affecting the normal driving of the intercity rail transit, which has high safety hazards. It also produces a large amount of noise, which affects the passenger's riding experience. SUMMARY
[0004] In order to overcome the problem that the sleeper made of reinforced concrete will produce a large vibration, and at the same time, will also produce a large noise, and at the same time, may cause a certain amount of displacement of the track laid on the sleeper, affecting the normal driving of the intercity rail transit, and possibly bringing safety hazards.
[0005] The technical scheme of the utility model is as follows: a city rail damping sleeper, comprising a damping part, the damping part comprising a damping block, the top of the damping block being attached to a track mounting block, the bottom of the track mounting block being provided with a lower block, the top of the track mounting block being provided with a recessed surface, the left and right sides of the recessed surface being provided with track grooves, the left and right sides of the track grooves being provided with track mounting holes, a limiting frame being provided on the side wall of the track mounting block, the bottom of the limiting frame being provided with a bulletproof part, the bulletproof part comprising a downward pressing spring, the downward pressing spring being capable of pressing the track mounting block downward, the top of the lower block being provided with a downward recessed mounting groove, the damping block being capable of being placed in the mounting groove, the bottom of the mounting groove being provided with a drainage hole.
[0006] As a preferred, the top of the mounting groove is provided with an upward protruding insertion column, the top of the damping block is provided with a guide hole corresponding to the insertion column, the recessed surface of the track mounting block is provided with an insertion hole corresponding to the insertion column, and the track mounting block can be covered on the top of the damping block.
[0007] As preferred, the bottom of the track mounting block is provided with a limiting plate, the bottom section of the limiting plate has an area greater than that of the bottom section of the track mounting block, the track mounting block is located in the center of the limiting plate, and the edge line formed by the bottom section of the track mounting block is located inside the edge line formed by the bottom section of the limiting plate.
[0008] As preferred, the top of the limiting plate is provided with a positioning rod protruding upward corresponding to the outside of the track mounting block, the top of the limiting frame is provided with a through hole penetrating upward and downward corresponding to the position of the positioning rod, and the track mounting block can only move upward and downward along the axis direction of the positioning rod.
[0009] As preferred, the limiting frame comprises an avoiding hole one penetrating upward and downward, the bottom of the limiting frame comprises an avoiding hole two, the section area of the avoiding hole two is greater than that of the avoiding hole one, the track mounting block can move upward and downward at the avoiding hole one, and the limiting plate can move upward and downward at the avoiding hole two.
[0010] As preferred, the through hole is located inside the avoiding hole two, the through hole is located outside the avoiding hole one, and the outer diameter of the positioning rod is sleeved with a pressing spring, and the limiting frame can limit the upward movement of the pressing spring.
[0011] As preferred, the top of the limiting frame is provided with a countersunk hole corresponding to the outside of the avoiding hole two, the bottom of the lower block is provided with a through mounting screw hole corresponding to the position of the countersunk hole, and the countersunk screw can be passed through the countersunk hole and engaged with the mounting screw hole.
[0012] The beneficial effects of the utility model are as follows: compared with the sleeper rail made of reinforced concrete, the vibration generated during the operation of the urban rail is absorbed by the damping part, which helps to prevent the track installation screw from loosening, the absorbed vibration can ensure the comfort of the intercity rail transit, improve the stability of the urban rail transit operation, the track installation hole in the track groove is convenient for track installation and laying, the drainage hole helps to drain the water in the installation groove, avoids the long-time contact of the damping block with water, and the damping block is made of wood-plastic composite material. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is a whole structure schematic view of the utility model;
[0014] Figure 2 It is an avoiding hole two structure schematic view of the utility model;
[0015] Figure 3 It is an insertion column structure schematic view of the utility model;
[0016] Figure 4 It is a damping block structure schematic view of the utility model;
[0017] Figure 5 It is an avoiding hole one structure schematic view of the utility model.
[0018] Explanation of reference signs: 1, lower block; 10, mounting groove; 11, insertion column; 12, mounting screw hole; 2, limiting frame; 21, avoidance opening I; 22, counterbore; 23, perforation; 24, avoidance opening II; 3, rail mounting block; 31, insertion hole; 32, recessed surface; 33, rail groove; 331, rail mounting hole; 34, limiting plate; 341, positioning rod; 342, downward spring; 5, damping block; 51, guide hole. DETAILED DESCRIPTION
[0019] The utility model is further explained in connection with the drawings and examples.
[0020] Please refer to Figure 1 - Figure 5 The utility model provides an embodiment: a damping sleeper for urban rail, including damping part, the damping part includes damping block 5, the top of damping block 5 is attached with rail mounting block 3, the bottom of rail mounting block 3 is equipped with lower block 1, the top of rail mounting block 3 is equipped with recessed surface 32, the left and right sides of recessed surface 32 are equipped with rail groove 33 respectively, the left and right sides in rail groove 33 are equipped with rail mounting hole 331, the sidewall of rail mounting block 3 is equipped with limiting frame 2, the bottom of limiting frame 2 is equipped with bulletproof part, the bulletproof part includes downward spring 342, downward spring 342 can press down rail mounting block 3, the top of lower block 1 is equipped with downward recessed mounting groove 10, damping block 5 can be placed in mounting groove 10, the bottom of mounting groove 10 is equipped with drain hole, the vibration generated when urban rail runs is absorbed through damping part, helps to prevent rail mounting screw to vibrate loose, and the vibration absorbed can guarantee the comfort of intercity rail transit, improves the stability of urban rail transit operation, the rail mounting hole 331 in rail groove 33 is convenient for the installation and laying of rail, the drain hole helps to drain the water in mounting groove 10, avoids that damping block 5 is in contact with water for a long time, and damping block 5 is made of wood-plastic composite material.
[0021] Please refer to Figure 1 - Figure 4In the embodiment, the top of the installation groove 10 is provided with an upward protruding plug column 11, the top of the shock absorbing block 5 is provided with a guide hole 51 corresponding to the plug column 11, the recessed surface 32 of the track installation block 3 is provided with a plug hole 31 corresponding to the plug column 11, the track installation block 3 can be arranged on the top of the shock absorbing block 5, the shock absorbing block 5 is limited by the plug column 11, the offset of the shock absorbing block 5 in the installation groove 10 is reduced, the track installation block 3 is limited by the plug column 11, the offset of the track installation block 3 driving the track is reduced, the bottom of the track installation block 3 is provided with a limiting plate 34, the cross-sectional area of the bottom of the limiting plate 34 is larger than that of the track installation block 3, the track installation block 3 is located at the center of the limiting plate 34, the edge line formed by the bottom cross section of the track installation block 3 is located inside the edge line formed by the bottom cross section of the limiting plate 34, the limiting plate 34 facilitates the limiting of the track installation block 3 by the limiting frame 2, prevents the intercity rail transit from pressing over the track on the track installation block 3 to cause the phenomenon of bouncing, and at the same time, the track installation block 3 has a certain deformation space for thermal expansion and cold contraction, the top of the limiting plate 34 is provided with an upward protruding positioning rod 341 corresponding to the outer side of the track installation block 3, the top of the limiting frame 2 is provided with a through hole 23 corresponding to the position of the positioning rod 341, the track installation block 3 can only move up and down along the axis direction of the positioning rod 341, the track installation block 3 is further limited by the positioning rod 341, the load pressure of the plug column 11 is reduced, and the service life of the shock absorbing sleeper is prolonged.
[0022] Please refer to Figure 2 - Figure 5 In the embodiment, the limiting frame 2 includes an upward and downward through avoiding hole one 21, the bottom of the limiting frame 2 includes an avoiding hole two 24, the cross-sectional area of the avoiding hole two 24 is larger than that of the avoiding hole one 21, the track installation block 3 can move up and down at the avoiding hole one 21, the limiting plate 34 can move up and down at the avoiding hole two 24, the avoiding hole two 24 forms the up and down movement range of the track installation block 3, and the track installation block 3 is limited by the avoiding hole one 21, the through hole 23 is located inside the avoiding hole two 24, the through hole 23 is located outside the avoiding hole one 21, the outer diameter of the positioning rod 341 is sleeved with a downward spring 342, the limiting frame 2 can limit the upward movement of the downward spring 342, the track installation block 3 bears a certain downward pressure by sleeving the downward spring 342 at the outer diameter of the positioning rod 341, the phenomenon of violent bouncing of the track installation block 3 is avoided, and vibrations are absorbed, the top of the limiting frame 2 is provided with a countersunk hole 22 corresponding to the outer side of the avoiding hole two 24, the bottom of the lower block 1 is provided with a through installation screw hole 12 corresponding to the position of the countersunk hole 22, a countersunk screw can pass through the countersunk hole 22 and engage with the installation screw hole 12, the lower block 1 and the limiting frame 2 are connected by the countersunk screw, the track installation block 3 is arranged in a certain movement range, and the countersunk screw is coated with thread glue and engaged with the installation screw hole 12.
[0023] In operation, first place the shock block 5 in the installation groove 10 of the lower block 1, then place the rail installation block 3 on the top of the shock block 5, so that the insertion column 11 can pass through the guide hole 51 and the insertion hole 31, then set the lower compression spring 342 at the positioning rod 341 of the rail installation block 3, then set the limiting frame 2 on the outside of the rail installation block 3, so that the positioning rod 341 can pass through the perforation 23 of the limiting frame 2, finally use the countersunk screw to smear the thread glue, so that the countersunk hole 22 is engaged and connected with the installation screw hole 12 of the lower block 1. When the shock-absorbing sleeper for urban rail is installed on the line where the intercity traffic needs to pass, the rail installation hole 331 is used to install the rail in the rail groove 33. When the intercity rail traffic passes through the shock-absorbing sleeper for urban rail, the shock block 5 can absorb the vibration generated by the intercity rail traffic. At the same time, the lower compression spring 342 presses the limiting plate 34 of the rail installation block 3 on the top of the shock block 5, reducing the phenomenon of bouncing of the rail installation block 3 driven by the shock block 5. Due to the limitation of the insertion column 11 and the positioning rod 341, the rail installation block 3 and the shock block 5 can only move up and down, and cannot produce lateral deviation.
[0024] Through the above steps, the shock-absorbing part absorbs the vibration generated during the operation of the city rail, which helps to prevent the rail installation screw from loosening, and the absorbed vibration can ensure the comfort of the intercity rail traffic and improve the stability of the urban rail traffic. The rail installation hole 331 in the rail groove 33 facilitates the installation and laying of the rail, and the drainage hole helps to drain the water in the installation groove 10, avoiding long-term contact of the shock block 5 with water. The shock block 5 is made of wood-plastic composite material to solve the problem that the sleeper rail made of reinforced concrete will generate relatively large vibration and noise, and may also cause a certain amount of displacement of the rail laid on the sleeper rail, affecting the normal driving of the intercity rail traffic and possibly causing safety hazards.
Claims
1. A vibration-damping sleeper for urban rail transit, characterized in that: It includes a shock-absorbing part, which includes a shock-absorbing block (5). The top of the shock-absorbing block (5) is attached to a track mounting block (3). The bottom of the track mounting block (3) is provided with a lower block (1). The top of the track mounting block (3) is provided with a recessed surface (32). The left and right sides of the recessed surface (32) are respectively provided with track grooves (33). The left and right sides of the track grooves (33) are provided with track mounting holes (331). The side wall of the track mounting block (3) is fitted with a limiting frame (2). The bottom of the limiting frame (2) is provided with a bulletproof part. The bulletproof part includes a compression spring (342). The compression spring (342) can press down the track mounting block (3). The top of the lower block (1) is provided with a downward recessed mounting groove (10). The shock-absorbing block (5) can be placed in the mounting groove (10). The bottom of the mounting groove (10) is provided with a drainage hole.
2. The vibration-damping sleeper for urban rail transit according to claim 1, characterized in that: The top of the mounting groove (10) is provided with an upward protruding post (11), the top of the shock absorber (5) is provided with a guide hole (51) corresponding to the post (11), the recessed surface (32) of the track mounting block (3) is provided with a corresponding insertion hole (31) corresponding to the post (11), and the track mounting block (3) can cover the top of the shock absorber (5).
3. The vibration-damping sleeper for urban rail transit according to claim 2, characterized in that: The bottom of the track mounting block (3) is provided with a limiting plate (34). The area of the bottom cross section of the limiting plate (34) is larger than the area of the bottom cross section of the track mounting block (3). The track mounting block (3) is located at the center of the limiting plate (34). The edge line formed by the bottom cross section of the track mounting block (3) is located inside the edge line formed by the bottom cross section of the limiting plate (34).
4. The vibration-damping sleeper for urban rail transit according to claim 3, characterized in that: The top of the limiting plate (34) is provided with an upward protruding positioning rod (341) on the outer side of the track mounting block (3), and the top of the limiting frame (2) is provided with a through hole (23) that runs vertically through the positioning rod (341). The track mounting block (3) can only move up and down along the axis of the positioning rod (341).
5. The vibration-damping sleeper for urban rail transit according to claim 4, characterized in that: The limiting frame (2) includes a vertically penetrating clearance opening one (21), and the bottom of the limiting frame (2) includes a clearance opening two (24). The cross-sectional area of the clearance opening two (24) is larger than the cross-sectional area of the clearance opening one (21). The track mounting block (3) can move up and down at the clearance opening one (21), and the limiting plate (34) can move up and down at the clearance opening two (24).
6. The vibration-damping sleeper for urban rail transit according to claim 5, characterized in that: The perforation (23) is located inside the second clearance opening (24), and the perforation (23) is located outside the first clearance opening (21). A pressure spring (342) is fitted on the outer diameter of the positioning rod (341). The limiting frame (2) can restrict the upward movement of the pressure spring (342).
7. The vibration-damping sleeper for urban rail transit according to claim 6, characterized in that: The top of the limiting frame (2) is provided with a countersunk hole (22) on the outside of the second clearance opening (24), and the bottom of the lower block (1) is provided with a through mounting screw hole (12) at the position corresponding to the countersunk hole (22). The countersunk screw can pass through the countersunk hole (22) and engage with the mounting screw hole (12).