Device for reducing abrasion between wheel rails of curve section of track

Abstract

The utility model discloses a device for reducing abrasion between wheel rails of a curve section of a rail, belongs to the field of rail traffic equipment, and aims to reduce friction between wheels and the rail in the curve section turning process of a rail vehicle, reduce the abrasion rate of the wheels and the rail and improve the running stability of the vehicle on the rail and the comfort level of passengers. The device is characterized in that the rail device is mounted on a sleeper, the rail device and the sleeper are connected and fixed through bolts, and springs and spring baffles are mounted in the rail device; the supporting rod support is welded to the bogie, the supporting rod, the hydraulic cylinder and the pin shaft are assembled on the supporting rod support, the drum-shaped wheel is installed at the top end of the supporting rod, and the supporting rod can be put down and put away around the supporting rod by controlling the hydraulic cylinder to stretch out and draw back. And when the supporting rod is lowered, the drum-shaped wheel is in contact with a spring baffle in the rail device and rolls along the spring baffle. The anti-attrition device is simple in structure, the corresponding anti-attrition device can be installed according to the actual bending direction of the track curve section, cost is saved, and material waste is avoided.

Description

Technical Field

[0001] The utility model belongs to the field of rail transit equipment, and relates to a wear reduction device, in particular to a device for reducing the wear between wheels and rails in the curve section of a track. Background Technique

[0002] With the continuous development of China's railway transportation industry, continuously improving the transportation efficiency and safety of railway transportation and reducing maintenance costs have always been the research directions of many scholars, and are also the necessary foundation for China to develop into a world transportation power. Although the relevant technologies in the field of railway transportation in China have been very mature, there are still many problems in some aspects. For example, the side wear of the rail and the wear of the wheel flange are serious, especially when the vehicle is running in the small-radius curve section, the wear is more severe; this problem will greatly reduce the service life and maintenance cost of rail transit, and in severe cases, it will also lead to derailment of the vehicle and safety accidents; therefore, it is extremely necessary to optimize the existing wheel-rail system or install a passing device for the curve section of the track to reduce wheel-rail wear and maintenance costs and improve passing safety and comfort.

[0003] At present, in order to reduce the serious wheel-rail wear problem in the curve section, the main measures taken are: superelevation of the outer rail, rail lubrication, appropriately increasing the hardness of the rail, appropriately widening the gauge of the curve section, etc.; the superelevation of the outer rail means that there is a certain height difference between the outer rail and the inner rail of the railway curve track during installation, and the centripetal component force (centripetal force) generated by the vehicle weight is used to balance a part of the centrifugal force generated when the vehicle passes through the curve section; when the train speed is high and the centrifugal force is greater than the centripetal force provided by the superelevation, insufficient superelevation results in under-superelevation, and excessive under-superelevation makes passengers feel uncomfortable; when the train speed is low and the centrifugal force is less than the centripetal force provided by the superelevation, excessive superelevation is generated due to excessive superelevation, and excessive over-superelevation will cause the inner rail to be crushed. Rail lubrication is to apply a solid lubricant to the track to reduce wheel-rail friction. According to the different lubrication positions of the rail, it is mainly divided into outer rail side lubrication and inner rail top lubrication. When necessary, a lubrication method combining the outer rail side and the inner rail top can also be used to reduce the wheel-rail wear rate; there are problems such as difficult cleaning in rail lubrication. Content of the Utility Model

[0004] Aiming at the serious wheel-rail wear problem existing in the existing device, the utility model discloses a device for reducing the wear between wheels and rails in the curve section of a track, including:

[0005] A track device is installed on the sleeper and fixed by bolts between the two. Springs and spring baffles are installed inside. Flanges are provided inside the track device and the spring baffle, and the springs can be embedded in the flanges to fix the springs;

[0006] The support rod seat is welded to the bogie. A support rod, a hydraulic cylinder, and a pin shaft Ⅰ are assembled on the support rod seat. The support rod seat and the support rod are connected by the pin shaft Ⅰ. Both ends of the hydraulic cylinder are connected to the support rod seat and the support rod respectively by pin shafts Ⅱ. The telescoping of the hydraulic cylinder can be controlled to realize the lowering and retracting of the support rod around the support rod seat. A drum wheel and a dust cover are installed at the top of the support rod. When the support rod is lowered, the drum wheel contacts the spring baffle in the track device and rolls along the spring baffle.

[0007] In the improved solution, the hydraulic cylinder is provided with a hydraulic circuit to control the telescoping of the hydraulic cylinder, and a hydraulic switch is installed at the driver's driving position.

[0008] The technical effects achieved by the present utility model are as follows:

[0009] 1. When the vehicle has not entered the curve section, the hydraulic cylinder contracts, making the support rod in the retracted state. The spring baffle inside the track device installed in the curve section is closely attached to the inner wall of the track device under the elastic force of the spring.

[0010] 2. When the vehicle is about to enter the curve section, operate the hydraulic cylinder to extend, so that the support rod is lowered to the vertical position in advance, ensuring that the drum wheel can contact the spring baffle in the track device and roll on the spring baffle when the vehicle enters the curve section.

[0011] 3. When the vehicle enters the curve section, the drum wheel contacts the spring baffle, and the spring baffle can move laterally inside the track device. Specifically, affected by the centrifugal force of the train, the car body and the wheelset will drive the support rod and the drum wheel to move laterally towards the outer rail direction. The spring baffle can compress the spring under the pressure of the drum wheel, causing the spring baffle to move towards the outer rail direction, and the elastic force generated by the spring can offset a part of the centrifugal force when the vehicle turns, compensating for the huge frictional force between the wheels and the rails, thereby reducing the wear between the wheel and the rail.

[0012] 4. When the vehicle leaves the curve section, the spring baffle returns to the state of being closely attached to the inner wall of the track device.

[0013] 5. This device can install the corresponding anti-wear device according to the actual bending direction of the track curve section, rather than generally installing the anti-wear devices on both sides of the unidirectionally bent track, which reduces the manufacturing cost of the device and avoids unnecessary waste of materials.

[0014] 6. Aiming at the current situation of wheel-rail wear in the curve section, the present utility model can effectively reduce the wear problem between the wheel flange and the side of the rail, extend the service life of the rail vehicle, reduce the maintenance cost, and improve the stability and passenger comfort when the vehicle is running in the curve section. Description of the Drawings

[0015] Figure 1This is a schematic diagram of the operation of this device when the vehicle passes through a right - hand curve (taking the direction of the vehicle's forward movement as the reference).

[0016] Figure 2 This is a schematic diagram of the operation of this device when the vehicle passes through a left - hand curve (taking the direction of the vehicle's forward movement as the reference).

[0017] Figure 3 This is a schematic diagram when the support rod of this device is retracted.

[0018] In the figure, 1. bogie; 2. wheel set; 3. pin shaft I; 4. support rod support; 5. support rod; 6. hydraulic cylinder; 7. drum - shaped wheel; 8. dust cover; 9. pin shaft II; 10. spring baffle; 11. spring; 12. track device; 13. bolt; 14. sleeper; 15. rail. Detailed implementation mode

[0019] The following will, in conjunction with the attached drawings, give a detailed description of the present utility model, but it is not limited to the following embodiments.

[0020] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the term "installation" should be understood in a broad sense. It can be integral installation, disassembly installation, or modular installation; for example, "connection" can be fixed connection or detachable connection. For those of ordinary skill in the art, the specific meanings of the above - mentioned terms in the present utility model can be understood according to specific circumstances.

[0021] As Figure 1 shown, the track device is installed on the sleeper and fixed to it by bolts. Inside it, there are a spring and a spring baffle; there are flanges inside the track device and the spring baffle, and the spring is embedded in the protruding flanges of the track device and the spring baffle to ensure that the spring will not be misaligned and fail when being compressed; the support rod support is welded on the bogie, and a support rod, a hydraulic cylinder, and a pin shaft are assembled on it. The support rod support and the support rod are connected by pin shaft I, and the telescoping of the hydraulic cylinder can be controlled to realize the lowering and retraction of the support rod around the support rod support; the hydraulic cylinder realizes extension and contraction through a hydraulic circuit, and the hydraulic switch is set at the driver's driving position; both ends of the hydraulic cylinder are connected to the support rod support and the support rod respectively by pin shaft II and can rotate according to the pin shaft; a drum - shaped wheel and a dust cover are installed at the top of the support rod.

[0022] When the vehicle does not enter the curve section, the hydraulic cylinder contracts to ensure that the support rod is in the retracted state, as Figure 3As shown, the spring baffle on the track device closely adheres to the inner wall of the track device under the elastic force of the spring; when the vehicle is about to enter the curve section, the driver operates the hydraulic switch to extend the hydraulic cylinder, and the support rod is lowered in advance to the vertical position; when the vehicle enters the curve section, the drum-shaped wheel at the end of the support rod contacts the spring baffle and rolls along it, compressing the spring, and the elastic force generated by the spring can offset a part of the centrifugal force when the vehicle turns, compensating for the huge frictional force between the wheels and the rails, thereby reducing the wear between the wheels and the rails; when the vehicle leaves the curve section, the driver operates the hydraulic switch again to retract the support rod, and the spring baffle returns to the state of closely adhering to the inner wall of the track device.

Claims

1. A device for reducing wear between wheels and rails in a curved track section, comprising a support rod support (4) and a track device (12), characterized in that, The track device (12) is installed on the sleeper (14) and fixed to it by bolts (13). Springs (11) and spring baffles (10) are installed inside. The support rod bracket (4) is welded to the bogie (1). A support rod (5), a hydraulic cylinder (6) and a pin shaft Ⅰ (3) are assembled on the support rod bracket (4). The support rod bracket (4) and the support rod (5) are connected by the pin shaft Ⅰ (3). Both ends of the hydraulic cylinder (6) are connected to the support rod bracket (4) and the support rod (5) respectively by pin shafts Ⅱ (9). A drum-shaped wheel (7) and a dust cover (8) are installed at the top of the support rod (5).

2. The wear reduction device between the wheel and the rail in the curved track section according to claim 1, characterized in that, Flanges are provided inside the track device (12) and the spring baffle (10), and the spring (11) can be embedded in the flange to fix the spring (11).

3. The wear reduction device between wheel and rail in the curved track section according to claim 1, characterized in that, When the vehicle does not enter the curve section, the spring baffle (10) is in close contact with the inner wall of the track device (12) under the elastic force of the spring (11). When the vehicle enters the curve section, the spring baffle (10) can compress the spring (11) under the pressure of the drum-shaped wheel (7), causing the spring baffle (10) to move towards the outer rail. After the vehicle leaves the curve section, the spring baffle (10) returns to the state of being in close contact with the inner wall of the track device (12).

4. The wear reduction device between wheel and rail in the curved track section according to claim 1, characterized in that, The telescopic movement of the hydraulic cylinder (6) can be controlled to realize the lowering and retraction of the support rod (5) around the support rod bracket (4).

5. The wear reduction device between the wheel and rail in the curved track section according to claim 1, characterized in that When the support rod (5) is lowered, the drum-shaped wheel (7) comes into contact with the spring baffle (10) in the track device (12) and rolls along the spring baffle (10).

6. The wear reduction device for wheel-rail in the curved track section according to claim 1, characterized in that The hydraulic cylinder (6) is provided with a hydraulic circuit to control the telescopic movement of the hydraulic cylinder (6), and the hydraulic switch is installed at the driver's driving position.

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