Steel rail grinding wagon

Abstract

The utility model relates to a steel rail grinding wagon, and relates to the technical field of railway engineering. The steel rail grinding wagon comprises a frame, at least two limiting mechanisms are arranged on the frame, each limiting mechanism comprises a connecting piece, a first support, a lifting assembly, a second support and a limiting assembly, the connecting pieces are fixed to the frame, the first supports are connected with the connecting pieces, the lifting assemblies are arranged on the first supports, and the second supports are connected with the lifting assemblies. The limiting assembly is arranged on the second support and comprises a wheel shaft, an elastic piece and a limiting wheel, the wheel shaft is arranged on the second support, the elastic piece and the limiting wheel are both arranged on the wheel shaft, and the elastic piece is arranged between the second support and the limiting wheel. The limiting mechanism can provide a transverse limiting effect for the frame, excessive transverse displacement of the frame is avoided, operation safety can be guaranteed, the relative position between the grinding head and the steel rail can be stable, and the situation that the grinding quality is reduced due to position deviation of the grinding head is avoided.

Description

Technical Field

[0001] This utility model relates to the field of railway engineering technology, and in particular to a rail grinding vehicle. Background Technology

[0002] With the increasing demand for high-speed and heavy-haul trains, the load between wheels and rails is increasing, and the probability of rail damage is also gradually increasing. If rail damage is not eliminated in time, it will affect traffic safety, causing property damage and casualties. Therefore, regular maintenance of rails is essential. Rail grinding can not only prevent damage before it occurs but also significantly extend the service life of rails, improve track quality, and ensure traffic safety.

[0003] Currently, rail grinding trolleys are commonly used for rail grinding operations. Chinese patent CN204455743U discloses a rail grinding trolley that uses a limiting traction block on the grinding trolley and a corresponding groove on the traction vehicle to match the limiting traction block. This allows the grinding trolley to be engaged within the groove of the traction vehicle via the stepped boss structure of the limiting traction block, thus limiting excessive lateral displacement. However, this technical solution only applies to grinding trolleys equipped with a traction vehicle; it is not suitable for grinding trolleys without a traction vehicle. Utility Model Content

[0004] This utility model provides a rail grinding vehicle, which uses a lateral limiting mechanism to prevent excessive lateral displacement during operation, thus ensuring operational safety and grinding quality.

[0005] This utility model provides a rail grinding vehicle, including a frame. At least two limiting mechanisms are provided on the frame. Each limiting mechanism includes a connector, a first bracket, a lifting assembly, a second bracket, and a limiting component. The connector is fixed to the frame. The first bracket is connected to the connector. The lifting assembly is disposed on the first bracket. The second bracket is connected to the lifting assembly. The limiting component is disposed on the second bracket. The limiting component includes an axle, an elastic element, and a limiting wheel. The axle is disposed on the second bracket. The elastic element and the limiting wheel are both disposed on the axle. The elastic element is disposed between the second bracket and the limiting wheel.

[0006] In one embodiment, the lifting assembly includes a motor, a guide rail, a slider, and a screw. The motor and the guide rail are both mounted on the first bracket. The screw is connected to the output end of the motor. The screw and the guide rail are both vertically arranged. The slider is slidably mounted on the guide rail. A nut is provided on the screw, and the nut is connected to the slider.

[0007] In one embodiment, the lifting assembly includes two guide rails and two sliders, with the screw disposed between the two guide rails and the two sides of the nut respectively connected to one of the sliders.

[0008] In one embodiment, the second support includes an upper support and a lower support connected to each other, the upper support being connected to the slider, and the axle being disposed on the lower support.

[0009] In one embodiment, the lower support includes a top plate and a first side plate and a second side plate respectively disposed at both ends of the top plate. The top plate is connected to the bottom of the upper support, and the wheel axle passes through the first side plate and the second side plate.

[0010] In one embodiment, a fixing block is provided on the side of the second side plate opposite to the first side plate, and the end of the wheel axle away from the limiting wheel is connected to the fixing block.

[0011] In one embodiment, the end of the axle away from the fixed block is provided with an end cap, and the side of the limiting wheel away from the elastic member abuts against the end cap.

[0012] In one embodiment, the elastic element has a first fixing sleeve and a second fixing sleeve at both ends, and both the first fixing sleeve and the second fixing sleeve are sleeved on the axle. The first fixing sleeve is connected to the first side plate, and the second fixing sleeve is connected to the limiting wheel.

[0013] In one embodiment, a thrust bearing is further provided between the second fixing sleeve and the limiting wheel.

[0014] In one embodiment, the portion of the limiting wheel that contacts the rail is frustum-shaped.

[0015] Compared with the prior art, the advantages of this utility model are that, by adjusting the lifting component, the limiting wheel can be set at a suitable height. When the rail grinding vehicle moves on the rail, the limiting wheel can maintain contact with the rail under the action of the elastic element, thereby providing a lateral limiting effect for the frame and preventing excessive lateral displacement of the frame. This not only ensures operational safety and prevents the rail grinding vehicle from accidentally derailing, but also makes the relative position between the grinding head and the rail more stable, preventing the grinding quality from decreasing due to positional displacement of the grinding head. Attached Figure Description

[0016] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0017] Figure 1 This is a perspective view of the rail grinding vehicle in an embodiment of this utility model;

[0018] Figure 2 This is a side view of the rail grinding vehicle placed on the rail in an embodiment of this utility model;

[0019] Figure 3 yes Figure 2 Top view;

[0020] Figure 4 yes Figure 2 Side view;

[0021] Figure 5 This is a perspective view of the limiting mechanism in an embodiment of this utility model;

[0022] Figure 6 yes Figure 5 Side view;

[0023] Figure 7 yes Figure 5 The main view;

[0024] Figure 8 yes Figure 5 Top view.

[0025] Figure label:

[0026] 1. Frame; 2. Limiting mechanism; 21. Connecting component; 22. First bracket; 23. Lifting assembly; 231. Motor; 232. Guide rail; 233. Slider; 234. Screw; 24. Second bracket; 241. Upper bracket; 242. Lower bracket; 2421. Top plate; 2422. First side plate; 2423. Second side plate; 25. Limiting assembly; 251. Wheel axle; 252. Elastic element; 253. Limiting wheel; 2531. Support part; 2532. Abutment part; 254. Fixing block; 255. End cap; 256. First fixing sleeve; 257. Second fixing sleeve; 258. Thrust bearing; 100. Rail. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] like Figures 1 to 4 As shown, a rail grinding vehicle according to an embodiment of the present invention includes a frame 1, on which two limiting mechanisms 2 are provided. Each limiting mechanism 2 includes a connector 21, a first bracket 22, a lifting assembly 23, a second bracket 24, and a limiting component 25. The connector 21 is fixed to the frame 1, the first bracket 22 is connected to the connector 21, the lifting assembly 23 is disposed on the first bracket 22, the second bracket 24 is connected to the lifting assembly 23, and the limiting component 25 is disposed on the second bracket 24. Figures 5 to 7As shown, the limiting component 25 includes an axle 251, an elastic element 252, and a limiting wheel 253. The axle 251 is mounted on the second bracket 24, and both the elastic element 252 and the limiting wheel 253 are mounted on the axle 251. The elastic element 252 is positioned between the second bracket 24 and the limiting wheel 253. In this embodiment, the elastic element 252 is a spring.

[0029] In this embodiment, the two limiting components 25 abut against one side of the rail 100. By adjusting the lifting component 23, the limiting wheel 253 can be set at a suitable height. When the rail grinding vehicle moves on the rail 100, the limiting wheel 253 can maintain abutment against the rail 100 under the action of the elastic element 252, thereby providing a lateral limiting effect for the frame 1 and preventing the frame 1 from undergoing excessive lateral displacement. This not only ensures operational safety and prevents the rail grinding vehicle from accidentally derailing, but also makes the relative position between the grinding head (not shown in the figure) and the rail 100 more stable, preventing the grinding head from deteriorating due to positional displacement.

[0030] To further improve the lateral stability of the rail grinding vehicle, four, six or more limit components 25 can be set on the frame 1, and the number of limit components 25 on the two rails 100 is the same.

[0031] Since the limiting component 25 is directly mounted on the frame 1, the lateral stability of the rail grinding vehicle in this embodiment is achieved through its own structure, without relying on a tractor or other external structures. Of course, the limiting mechanism 2 in this application can also be applied to rail grinding vehicles that require tractor towing to enhance their lateral stability.

[0032] like Figure 5 As shown, the lifting assembly 23 includes a motor 231, a guide rail 232, a slider 233, and a screw 234. The motor 231 and guide rail 232 are both mounted on the first bracket 22. The screw 234 is connected to the output end of the motor 231. Both the screw 234 and guide rail 232 are vertically arranged. The slider 233 is slidably mounted on the guide rail 232. A nut (not shown) is provided on the screw 234 and is connected to the slider 233. When the motor 231 drives the screw 234 to rotate, the nut on the screw 234 moves up or down along the screw 234, thereby causing the slider 233 to move up and down along the guide rail 232, thus adjusting the height of the second bracket 24 and ensuring good contact between the limit wheel 253 and the rail 100.

[0033] like Figure 5As shown, the lifting assembly 23 includes two guide rails 232 and two sliders 233. A screw 234 is disposed between the two guide rails 232, and each side of the nut is connected to one slider 233. This arrangement improves the stability of the second support 24, and also increases the stability of the limiting assembly 25 mounted on the second support 24, enabling it to withstand larger loads.

[0034] like Figure 5 As shown, the second bracket 24 includes an upper bracket 241 and a lower bracket 242 connected to each other. The upper bracket 241 is connected to the slider 233, and the axle 251 is mounted on the lower bracket 242. The upper bracket 241 and the lower bracket 242 have different functions. The upper bracket 241, through its connection with the slider 233, enables the height of the limiting component 25 to be adjusted, while the lower bracket 242 is used for mounting the limiting component 25, allowing the limiting component 25 to be stably fixed.

[0035] like Figures 5 to 7 As shown, the lower support 242 includes a top plate 2421 and a first side plate 2422 and a second side plate 2423 respectively disposed at both ends of the top plate 2421. The top plate 2421 is connected to the bottom of the upper support 241, and the wheel axle 251 passes through the first side plate 2422 and the second side plate 2423. The first side plate 2422 and the second side plate 2423 are spaced apart by a certain distance, which allows the wheel axle 251 to be stably fixed on the lower support 242.

[0036] Furthermore, a fixing block 254 is provided on the side of the second side plate 2423 opposite to the first side plate 2422, and the end of the wheel axle 251 away from the limiting wheel 253 is connected to the fixing block 254. By setting the fixing block 254 and connecting the wheel axle 251 to the fixing block 254, the wheel axle 251 will not move axially, while the limiting wheel 253 slides along the wheel axle 251 through interaction with the elastic element 252.

[0037] like Figure 5 and Figure 6 As shown, the end of the axle 251 away from the fixing block 254 is provided with an end cap 255, and the side of the limiting wheel 253 away from the elastic member 252 abuts against the end cap 255. The end cap 255 provides a limiting function for the limiting wheel 253, preventing the limiting wheel 253 from coming loose from the axle 251.

[0038] like Figure 7 and Figure 8As shown, the elastic element 252 has a first fixing sleeve 256 and a second fixing sleeve 257 at both ends. Both the first fixing sleeve 256 and the second fixing sleeve 257 are fitted onto the axle 251. The first fixing sleeve 256 is connected to the first side plate 2422, and the second fixing sleeve 257 is connected to the limiting wheel 253. Placing the elastic element 252 on the first fixing sleeve 256 and the second fixing sleeve 257 serves two purposes: firstly, it prevents the elastic element 252 from directly rubbing against other components, thus avoiding a shortened service life; secondly, it provides a certain limiting effect for the elastic element 252, making it less prone to bending and deformation, thereby increasing its reliability.

[0039] Furthermore, a thrust bearing 258 is provided between the second fixed sleeve 257 and the limiting wheel 253. The limiting wheel 253 contacts the surface of the rail 100. By providing the thrust bearing 258 between the second fixed sleeve 257 and the limiting wheel 253, direct friction between the second fixed sleeve 257 and the limiting wheel 253 is avoided, allowing the limiting wheel 253 to maintain smooth rolling, reducing the friction between the limiting wheel 253 and the rail 100, and improving the service life of the limiting wheel 253.

[0040] like Figure 8 As shown, the limiting wheel 253 includes a support portion 2531 and an abutment portion 2532 connected to each other. The support portion 2531 is disc-shaped and is connected to the thrust bearing 258. The abutment portion 2532 is frustum-shaped and contacts the surface of the rail 100. Since the limiting wheel 253 contacts the rail 100 through its side, this design allows the limiting wheel 253 to continue rolling on the rail 100 even when there is a small lateral displacement, which can well meet the lateral positioning requirements of the rail grinding machine during operation.

[0041] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A rail grinding vehicle, characterized in that, The device includes a frame, on which at least two limiting mechanisms are provided. Each limiting mechanism includes a connector, a first bracket, a lifting assembly, a second bracket, and a limiting assembly. The connector is fixed to the frame, the first bracket is connected to the connector, the lifting assembly is disposed on the first bracket, the second bracket is connected to the lifting assembly, and the limiting assembly is disposed on the second bracket. The limiting assembly includes an axle, an elastic element, and a limiting wheel. The axle is disposed on the second bracket, and both the elastic element and the limiting wheel are disposed on the axle. The elastic element is disposed between the second bracket and the limiting wheel.

2. The rail grinding vehicle according to claim 1, characterized in that, The lifting assembly includes a motor, a guide rail, a slider, and a screw. The motor and the guide rail are both mounted on the first bracket. The screw is connected to the output end of the motor. The screw and the guide rail are both vertically arranged. The slider is slidably mounted on the guide rail. A nut is provided on the screw, and the nut is connected to the slider.

3. The rail grinding vehicle according to claim 2, characterized in that, The lifting assembly includes two guide rails and two sliders, with the screw disposed between the two guide rails and the two sides of the nut connected to one of the sliders respectively.

4. The rail grinding vehicle according to claim 2, characterized in that, The second support includes an upper support and a lower support that are connected to each other. The upper support is connected to the slider, and the axle is disposed on the lower support.

5. The rail grinding vehicle according to claim 4, characterized in that, The lower support includes a top plate and a first side plate and a second side plate respectively disposed at both ends of the top plate. The top plate is connected to the bottom of the upper support, and the wheel axle passes through the first side plate and the second side plate.

6. The rail grinding vehicle according to claim 5, characterized in that, The second side plate has a fixing block on the side opposite to the first side plate, and the end of the wheel axle away from the limiting wheel is connected to the fixing block.

7. The rail grinding vehicle according to claim 6, characterized in that, The end of the axle away from the fixed block is provided with an end cap, and the side of the limiting wheel away from the elastic member abuts against the end cap.

8. The rail grinding vehicle according to claim 5, characterized in that, The elastic element has a first fixing sleeve and a second fixing sleeve at its two ends, and both the first fixing sleeve and the second fixing sleeve are sleeved on the wheel axle. The first fixing sleeve is connected to the first side plate, and the second fixing sleeve is connected to the limiting wheel.

9. The rail grinding vehicle according to claim 8, characterized in that, A thrust bearing is also provided between the second fixing sleeve and the limiting wheel.

10. The rail grinding vehicle according to claim 1, characterized in that, The portion of the limiting wheel that contacts the rail is truncated cone-shaped.

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