Vibration fatigue resistant elastic strip for subway track

Abstract

The utility model relates to the field of metro tracks, in particular to a vibration fatigue resistant elastic strip for metro tracks, which comprises a sleeper, a fixing seat arranged at the upper end of the sleeper, a connecting seat arranged at the upper end of the fixing seat, the sleeper, the fixing seat and the connecting seat are connected through expansion bolts, and a round pipe is integrally arranged at the upper end of the connecting seat. An elastic strip for fixing the track is installed in the round pipe, a fixing mechanism matched with the elastic strip is arranged at the upper end of the connecting base, and a limiting assembly for assisting in fixing the elastic strip is arranged at the upper end of the connecting base; according to the fixing mechanism, track vibration in the running process of a train is effectively reduced through the shock absorbers, the track and the elastic strips are protected against damage, meanwhile, the stability of track installation is greatly improved through cooperation of the clamping plates and the L-shaped clamping grooves and arrangement of the rubber blocks, the limiting blocks in the limiting assemblies are tightly matched with the elastic strips, and the stability of track installation is improved. The elastic strip can be kept at the preset position when being stressed, and compared with a traditional mode depending on friction force, the mode is more reliable.

Description

Technical Field

[0001] This utility model relates to the field of subway tracks, and in particular to a vibration-resistant fatigue spring clip for subway tracks. Background Technology

[0002] In subway track systems, elastic rails, as the core component of fixed tracks, bear the continuous high-frequency vibrations and impact loads brought about by train operation, while also resisting the corrosive effects of the environment. Their performance is directly related to the stability and safety of the track. Long-term reliable elastic rails are an important guarantee for ensuring smooth subway operation and passenger safety.

[0003] However, traditional elastic rail structures rely on the friction force generated by the elastic deformation of the rail itself to fix the track. However, under long-term vibration, they are prone to plastic deformation, which leads to a decrease in clamping force and causes track displacement. In addition, traditional elastic rails lack efficient damping structures, and vibration energy is directly transmitted to the sleepers and roadbed, which accelerates fatigue fracture of the elastic rails, shortens their service life, and thus easily leads to track deviation and increases the risk of derailment. Utility Model Content

[0004] In order to overcome the problems of traditional elastic bar structures being prone to plastic deformation due to long-term vibration, resulting in decreased clamping force and track displacement, and lacking efficient damping structures, which accelerates fatigue fracture and increases the risk of derailment.

[0005] The technical solution of this utility model is as follows: a vibration-resistant fatigue spring clip for subway tracks, including a sleeper, a fixed seat at the upper end of the sleeper, a connecting seat at the upper end of the fixed seat, the sleeper, the fixed seat and the connecting seat are connected by expansion bolts, a circular tube is integrally provided at the upper end of the connecting seat, a spring clip for fixing the track is installed inside the circular tube, a fixing mechanism adapted to the spring clip is provided at the upper end of the connecting seat, and a limiting component for assisting in fixing the spring clip is provided at the upper end of the connecting seat.

[0006] Preferably, the fixing mechanism includes a shock absorber, and the upper end of the connecting seat has a through hole. The through holes are distributed along the long side of the connecting seat, and a shock absorber is installed in each through hole. A connecting block is installed at the upper end of the shock absorber, and a clamping plate for fixing the track is installed at the upper end of the connecting block.

[0007] Preferably, the lower end of the card plate is provided with an L-shaped slot that matches the edge of the track, and the track is engaged in the L-shaped slot.

[0008] Preferably, the limiting component includes a limiting block with a limiting groove adapted to the elastic bar inside. The connecting seat and the limiting block have the same screw hole, and a screw rod is threaded into the screw hole. A knob is provided at the upper end of the screw rod.

[0009] Preferably, the screw has a threaded connection to a fastening ring on its outer wall, and the outer wall of the fastening ring is provided with anti-slip texture.

[0010] Preferably, the side end of the fixing seat is provided with a reinforcing rib, which is connected to the sleeper by bolts.

[0011] As a preferred option, a rubber block is provided inside the L-shaped slot.

[0012] The beneficial effects of this utility model are as follows: The fixing mechanism in this solution effectively reduces track vibration during train operation through the shock absorber, protecting the track and elastic bar from damage. At the same time, the cooperation between the card plate and the L-shaped card slot and the setting of the rubber block greatly improve the stability of the track installation. The limiting block in the limiting component is closely matched with the elastic bar, ensuring that the elastic bar can be kept in the predetermined position when subjected to force, which is more reliable than the traditional method that relies on friction. Attached Figure Description

[0013] Figure 1 The diagram shown is a three-dimensional structural schematic of the vibration-resistant fatigue spring clip for subway tracks according to this utility model.

[0014] Figure 2 The image shown is a front view of the vibration-resistant fatigue spring clip for subway tracks according to this utility model.

[0015] Figure 3 The diagram shown is a top view of the vibration-resistant fatigue spring clip for subway tracks according to this utility model.

[0016] Figure 4 The diagram shown is a three-dimensional structural schematic of the vibration-resistant fatigue-resistant elastic clip fixing mechanism for subway tracks according to this utility model.

[0017] Figure 5 The diagram shown is a three-dimensional structural schematic of the vibration-resistant fatigue-resistant elastic clip limiting component for subway tracks according to this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Sleeper; 2. Fixed seat; 3. Connecting seat; 4. Round tube; 5. Spring bar; 6. Shock absorber; 7. Through hole; 8. Connecting block; 9. Clamping plate; 10. L-shaped groove; 11. Limiting block; 12. Limiting groove; 13. Screw; 14. Knob; 15. Fastening ring; 16. Reinforcing rib. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please see Figure 1 - Figure 5This utility model provides an embodiment: a vibration-resistant fatigue spring clip 5 for subway tracks, including a sleeper 1, a fixing seat 2 at the upper end of the sleeper 1, and a connecting seat 3 at the upper end of the fixing seat 2. The sleeper 1, fixing seat 2, and connecting seat 3 are connected by expansion bolts. A circular tube 4 is integrally provided at the upper end of the connecting seat 3, and a spring clip 5 for fixing the track is installed inside the circular tube 4. A fixing mechanism adapted to the spring clip 5 is provided at the upper end of the connecting seat 3, and a limiting component for assisting in fixing the spring clip 5 is provided at the upper end of the connecting seat 3. The sleeper 1 is a basic component of the subway track system, used to support and fix the track. The fixing seat 2 is installed on the upper end of the sleeper 1 to connect the sleeper 1 and the connecting seat 3. It provides a smooth transition surface to ensure that the connecting seat 3 can be firmly installed on the sleeper 1. The connecting seat 3 connects the upper and lower parts, transferring the supporting force of the sleeper 1 to the round tube 4 and the elastic strip 5. The round tube 4 is used to accommodate and install the elastic strip 5. The elastic strip 5 is used to fix the track. It has sufficient elasticity and toughness to withstand the vibration and impact of the train. The function of the fixing mechanism is to cooperate with the elastic strip 5 to fix the track. The function of the limiting component is to limit the range of movement of the elastic strip 5 when under force, ensuring that the elastic strip 5 can be kept in the predetermined position.

[0021] Please see Figure 1 and Figure 4 In this embodiment, the fixing mechanism includes a shock absorber 6. A through hole 7 is provided at the upper end of the connecting seat 3, and the through holes 7 are distributed along the long side of the connecting seat 3. A shock absorber 6 is installed in each through hole 7. A connecting block 8 is provided at the upper end of the shock absorber 6, and a rail-fixing plate 9 is provided at the upper end of the connecting block 8. An L-shaped groove 10 adapted to the edge of the rail is provided at the lower end of the plate 9. The rail is engaged in the L-shaped groove 10, and a rubber block is provided in the L-shaped groove 10. The shock absorber 6 has good elasticity and damping performance, which can reduce rail vibration during train operation and protect the rail and spring clip 5 from damage. The connecting block 8 is fixed to the shock absorber 6. The end structure is used to connect the shock absorber 6 and the clamping plate 9. It transmits the elastic force and damping force of the shock absorber 6 to the clamping plate 9, ensuring that the clamping plate 9 can firmly clamp the rail. The clamping plate 9 is a component in the fixing mechanism used to directly clamp the rail. Its lower end has an L-shaped groove 10. The clamping plate 9 is connected to the shock absorber 6 through the connecting block 8, ensuring that the force can be evenly transmitted to the shock absorber 6 when under force, thereby reducing vibration. The L-shaped groove 10 is a slot opened at the lower end of the clamping plate 9 for clamping the edge of the rail. The rubber block is a soft material block set in the L-shaped groove 10 to increase the friction between the clamping plate 9 and the rail, thereby improving the stability of the installation.

[0022] Please see Figure 1 and Figure 5In this embodiment, the limiting component includes a limiting block 11, which has a limiting groove 12 adapted to the elastic bar 5. The connecting seat 3 and the limiting block 11 have the same screw hole, and a screw rod 13 is threadedly connected to the screw hole. A knob 14 is provided at the upper end of the screw rod 13, and a fastening ring 15 is threadedly connected to the outer wall of the screw rod 13. The outer wall of the fastening ring 15 is provided with anti-slip texture. A reinforcing rib 16 is provided at the side end of the fixing seat 2. The reinforcing rib 16 is connected to the sleeper 1 by bolts. The limiting block 11 is the main structure of the limiting component, and it has a limiting groove 12. The limiting groove 12 is adapted to the shape and size of the elastic bar 5. The limiting groove 12 is used to accommodate and fix the elastic bar 5. The screw rod 13 is a fastener connecting the connecting seat 3 and the limiting block 11, and its outer wall is threaded. A knob 14 is provided at the upper end of the screw 13 for easy manual rotation to tighten or loosen the connection. The surface of the knob 14 is coated to increase the friction of the hand and prevent slippage during rotation. The fastening ring 15 is a fastener that is threaded onto the outer wall of the screw 13 and is used to lock the screw 13 after the position of the limit block 11 is adjusted. The outer wall of the fastening ring 15 is provided with anti-slip texture to increase the friction of the hand and make it easy for maintenance personnel to rotate the fastening ring 15 to perform the locking operation. The design of the fastening ring 15 ensures that the screw 13 will not loosen or come out on its own when under force. The reinforcing rib 16 is a structural component fixed to the side of the fixed seat 2 to enhance the load-bearing capacity and stability of the fixed seat 2. The reinforcing rib 16 is connected to the sleeper 1 by bolts to firmly fix the fixed seat 2 to the sleeper 1.

[0023] During operation, first, the track is installed on the connecting seat 3. Then, the L-shaped slot 10 of the clamping plate 9 is aligned with the edge of the track and inserted, so that the track is stably placed in the L-shaped slot 10. Next, the spring bar 5 is installed into the cylinder. At this time, the upper part of the spring bar 5 will tightly fit and press against the clamping plate 9, thereby firmly fixing the track on the connecting seat 3. After that, the limiting block 11 is placed in the corresponding position of the connecting seat 3, ensuring that the screw 13 is aligned with the screw hole. Then, the knob 14 is rotated to screw the screw 13 into the screw hole of the limiting block 11 and the connecting seat 3, completing the fixing of the limiting block 11, thereby realizing the limiting function of the spring bar 5.

[0024] Through the above steps, the fixing mechanism in this solution effectively reduces track vibration during train operation through the shock absorber 6, protecting the track and elastic bar 5 from damage. At the same time, the cooperation between the clamping plate 9 and the L-shaped clamping groove 10, as well as the setting of the rubber block, greatly improves the stability of the track installation. The limiting block 11 in the limiting component fits tightly with the elastic bar 5, ensuring that the elastic bar 5 can be kept in the predetermined position when under force. This is more reliable than the traditional method that relies on friction. It solves the problems that the traditional elastic bar 5 structure is prone to plastic deformation due to long-term vibration, resulting in a decrease in clamping force and track displacement. It also lacks an efficient damping structure, which accelerates fatigue fracture and increases the risk of derailment.

Claims

1. A vibration fatigue resistant elastic bar for subway tracks, comprising sleepers (1); characterized in that: A fixed seat (2) is provided at the upper end of the sleeper (1), and a connecting seat (3) is provided at the upper end of the fixed seat (2). The sleeper (1), the fixed seat (2) and the connecting seat (3) are connected by expansion bolts. A round tube (4) is integrally provided at the upper end of the connecting seat (3). A spring strip (5) for fixing the track is installed inside the round tube (4). A fixing mechanism adapted to the spring strip (5) is provided at the upper end of the connecting seat (3). A limiting component for fixing the spring strip (5) is provided at the upper end of the connecting seat (3).

2. The vibration-resistant fatigue spring clip for subway tracks according to claim 1, characterized in that: The fixing mechanism includes a shock absorber (6), and a through hole (7) is provided at the upper end of the connecting seat (3). The through holes (7) are distributed along the long side of the connecting seat (3). A shock absorber (6) is provided in each through hole (7). A connecting block (8) is provided at the upper end of the shock absorber (6). A fixing plate (9) for fixing the track is provided at the upper end of the connecting block (8).

3. The vibration-resistant fatigue spring clip for subway tracks according to claim 2, characterized in that: The lower end of the card plate (9) is provided with an L-shaped slot (10) that matches the edge of the track, and the track is engaged in the L-shaped slot (10).

4. The vibration-resistant fatigue spring clip for subway tracks according to claim 3, characterized in that: The limiting component includes a limiting block (11), a limiting groove (12) adapted to the elastic bar (5) is provided in the limiting block (11), the connecting seat (3) and the limiting block (11) are provided with the same screw hole, the screw hole is threaded with a screw rod (13), and a knob (14) is provided at the upper end of the screw rod (13).

5. The vibration-resistant fatigue spring clip for subway tracks according to claim 4, characterized in that: The outer wall of the screw (13) is threaded with a fastening ring (15), and the outer wall of the fastening ring (15) is provided with anti-slip texture.

6. The vibration-resistant fatigue spring clip for subway tracks according to claim 5, characterized in that: The side end of the fixed seat (2) is provided with a reinforcing rib (16), which is connected to the sleeper (1) by bolts.

7. The vibration-resistant fatigue spring clip for subway tracks according to claim 6, characterized in that: A rubber block is installed inside the L-shaped slot (10).

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