Rail top friction regulator roadside coating device and coating adjusting method thereof

Abstract

The invention relates to a track top friction regulator roadside coating device and a coating adjusting method thereof, and the track top friction regulator roadside coating device comprises an outer track coating plate, an inner track coating plate, a friction regulator storage module, a transverse force strain gauge, a vertical force strain gauge and a wheel-rail force remote monitoring control system, the friction regulator storage module is connected to the wheel-rail force remote monitoring control system through a storage module signal control line, the transverse force strain gauges are pasted to the top faces of rail feet of the outer rail and the inner rail, and the vertical force strain gauges are pasted to the rail webs of the outer rail and the inner rail. The transverse force strain gauges and the vertical force strain gauges are connected to a wheel-rail force remote monitoring control system through wheel-rail force signal control lines. The method has the beneficial effects that parameters such as the coating amount or the coating frequency of the friction modifier can be dynamically adjusted according to the wheel-rail force, differential coating of the friction modifier of the inner rail and the outer rail can be achieved, the optimal antifriction effect is achieved, meanwhile, the coating amount of the friction modifier is further reduced, and environmental pollution is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of wheel-rail friction adjustment, and in particular to a rail top friction adjustment agent roadside coating device and a coating adjustment method thereof. Background Art

[0002] The friction coefficient at the wheel-rail interface is a key factor affecting wheel-rail wear and damage. In order to solve the service damage problems such as wear, surface oblique cracks and corrugation of rails in curved sections, in addition to the conventional rail side lubrication technology (to solve the side wear problem), a friction regulator coating device is used to coat the rail top with a friction regulator (i.e., rail top friction reduction technology) to adjust the friction coefficient at the wheel-rail interface to a medium friction coefficient level (0.1-0.3). In addition, without affecting the safety of train operation, the influence of the lateral force and tangential force between the wheel and rail on wheel-rail wear and damage when the train passes through a curved section is reduced. This has become an important part of today's advanced rail transit operation and maintenance technology.

[0003] The friction modifier coating device usually includes an energy supply module (usually a solar panel), a storage module (a box and a pump body), a coating module (coating plates, pipes and other connecting devices), a detection module (such as a counter, which is used to trigger the device to start running) and a remote monitoring module (online adjustment of the coating amount and other functions). The friction reduction effect is related to the coating amount of the friction modifier. Excessive coating will not only reduce the friction reduction effect, but also increase environmental pollution. The patent with publication number CN115817565A discloses a non-contact rail top corrugation management system that can be remotely monitored. The system can achieve quantitative positioning of friction modifier coating through remote control, but it cannot further evaluate the friction reduction effect after coating, and thus cannot dynamically adjust the coating amount of the friction modifier according to the evaluation results to achieve the best coating effect. Summary of the invention

[0004] The object of the present invention is to overcome the shortcomings of the prior art and provide a rail top friction modifier wayside coating device and a coating adjustment method thereof, which can dynamically adjust the coating amount or coating frequency and other parameters of the friction modifier according to the wheel-rail force, and can achieve differential coating of the friction modifier on the inner rail and the outer rail, thereby achieving the best friction reduction effect while further reducing the coating amount of the friction modifier and reducing environmental pollution.

[0005] The purpose of the present invention is achieved through the following technical solutions: A rail top friction modifier roadside coating device comprises an outer rail coating plate, an inner rail coating plate, a friction modifier storage module, a lateral force strain gauge, a vertical force strain gauge, and a wheel-rail force remote monitoring and control system. The outer rail coating plate is connected to the friction modifier storage module through an outer rail material transportation pipeline, the inner rail coating plate is connected to the friction modifier storage module through an inner rail material transportation pipeline, the friction modifier storage module is connected to the wheel-rail force remote monitoring and control system through a storage module signal control line, the lateral force strain gauge is pasted on the top surface of the rail foot of the outer rail and the inner rail, the vertical force strain gauge is pasted on the rail waist of the outer rail and the inner rail, and both the lateral force strain gauge and the vertical force strain gauge are connected to the wheel-rail force remote monitoring and control system through the wheel-rail force signal control line.

[0006] Furthermore, the number of outer rail coating outlets on the outer rail coating plate is less than the number of inner rail coating outlets on the inner rail coating plate.

[0007] Furthermore, the diameter of the inner rail material transport pipeline is smaller than the diameter of the outer rail material transport pipeline.

[0008] Furthermore, the transverse force strain gauges are pasted on the top surfaces of the rail feet at the straight-slow, slow-round, middle of the curve, round-slow and slow-straight points of the right curve, and the vertical force strain gauges are pasted on the waists of the rails at the straight-slow, slow-round, middle of the curve, round-slow and slow-straight points of the right curve.

[0009] Furthermore, based on the above rail top friction modifier roadside coating device, the present invention also provides a rail top friction modifier roadside coating adjustment method, comprising: The wheel-rail force remote monitoring and control system adjusts the coating parameters of the friction modifier according to the wheel-rail force magnitude, train dynamics parameters, friction modifier material parameters or device application environment parameters; Wheel-rail force includes wheel-rail lateral force and wheel-rail vertical force. The wheel-rail lateral force is detected by lateral force strain gauge, and the wheel-rail vertical force is detected by vertical force strain gauge. The train dynamic parameters are calculated by the wheel-rail force remote monitoring and control system based on the detected wheel-rail lateral force and wheel-rail vertical force; The friction modifier material parameters and the device application environment parameters are detected through the friction modifier storage module.

[0010] Furthermore, if the detected wheel-rail lateral force or wheel-rail vertical force is too high, the coating parameter of the friction modifier storage module is increased, otherwise the coating parameter of the friction modifier storage module is reduced.

[0011] Furthermore, the train dynamic parameters include the train derailment coefficient, the wheel axle lateral force and the wheel weight reduction rate. If the train derailment coefficient, the wheel axle lateral force and the wheel weight reduction rate exceed the safety limit, the coating parameters of the friction modifier are increased until the train derailment coefficient, the wheel axle lateral force and the wheel weight reduction rate are reduced to below the safety limit.

[0012] Furthermore, the material parameters of the friction modifier include viscosity, particle concentration and temperature. If the viscosity, particle concentration and temperature of the friction modifier are abnormal, the coating parameters of the friction modifier are reduced.

[0013] Furthermore, the device application environment parameters include temperature, humidity and weather. If the temperature, humidity and weather exceed preset limits, the coating parameters of the friction modifier are reduced.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention integrates the wheel-rail force monitoring technology into the roadside coating device through the application of lateral force strain gauges and vertical force strain gauges, and then can dynamically adjust the coating amount or coating frequency of the friction modifier according to the wheel-rail force. Combined with data processing and remote transmission technology, it can conveniently monitor the wheel-rail force and train dynamics data, monitor the safety of the train in real time, and reduce the cost of on-site testing of the friction modifier's friction reduction adjustment effect.

[0015] 2. The present invention achieves the best friction reduction effect by differentially coating the friction modifier on the inner rail and the outer rail, while further reducing the coating amount of the friction modifier and reducing environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] In the figure: 1. Outer rail coating outlet; 2. Outer rail coating plate; 3. Outer rail; 4. Inner rail; 5. Inner rail coating outlet; 6. Inner rail coating plate; 7. Inner rail material transportation pipeline; 8. Friction modifier storage module; 9. Storage module signal control line; 10. Wheel-rail force remote monitoring and control system; 11. Wheel-rail force signal control line; 12. Transverse force strain gauge; 13. Vertical force strain gauge; 14. Outer rail material transportation pipeline. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0019] like Figure 1 As shown, a rail top friction modifier wayside coating device can dynamically adjust parameters such as the coating amount or coating frequency of the friction modifier on the track according to the wheel-rail force. The specific structure includes an outer rail coating plate 2, an inner rail coating plate 6, a friction modifier storage module 8, a lateral force strain gauge 12, a vertical force strain gauge 13, and a wheel-rail force remote monitoring and control system 10.

[0020] The outer rail coating plate 2 is connected to the friction modifier storage module 8 through the outer rail material transport pipeline 14, and the friction modifier storage module 8 pumps the friction modifier to the outer rail coating plate 2 through the outer rail material transport pipeline 14, and then coats the friction modifier on the outer rail 3 through the outer rail coating outlet 1 on the outer rail coating plate 2; the inner rail coating plate 6 is connected to the friction modifier storage module 8 through the inner rail material transport pipeline 7, and the friction modifier storage module 8 pumps the friction modifier to the inner rail coating plate 6 through the inner rail material transport pipeline 7, and then coats the friction modifier on the inner rail 4 through the inner rail coating outlet 5 on the inner rail coating plate 6.

[0021] The friction modifier storage module 8 is connected to the wheel-rail force remote monitoring control system 10 through the storage module signal control line 9, the lateral force strain gauge 12 is pasted on the top surface of the rail foot of the outer rail 3 and the inner rail 4, and the vertical force strain gauge 13 is pasted on the rail waist of the outer rail 3 and the inner rail 4. The lateral force strain gauge 12 and the vertical force strain gauge 13 are both connected to the wheel-rail force remote monitoring control system 10 through the wheel-rail force signal control line 11. The lateral force strain gauge 12 and the vertical force strain gauge 13 can respectively detect the wheel-rail vertical force and the wheel-rail lateral force in real time, and then transmit the detection results to the wheel-rail force remote monitoring control system 10, and the wheel-rail force remote monitoring control system 10 controls the friction modifier storage module 8 to dynamically adjust the coating parameters of the friction modifier according to the received detection results.

[0022] In this embodiment, the lateral force strain gauge 12 is pasted on the top surface of the rail foot at the straight-slow, slow-round, middle of the curve, round-slow and slow-straight points of the right curve, and the vertical force strain gauge 13 is pasted on the rail waist at the straight-slow, slow-round, middle of the curve, round-slow and slow-straight points of the right curve.

[0023] According to the calculation results of train dynamic parameters in existing safety verification and anti-friction verification tests, the lateral force level of the inner rail 4 is high, and the effect of reducing the lateral force of the inner rail 4 after applying the friction modifier is poor. Therefore, compared with the outer rail 3, the inner rail 4 has a higher demand for friction modifier between the wheel-rail interface. In this regard, in the actual operation of coating the friction modifier, it is necessary to differentially coat the inner rail 4 and the outer rail 3. Specifically, the pumping amount of the friction modifier on the inner rail coating plate 6 can be appropriately increased to alleviate the high level of lateral force on the wheel-rail interface of the inner rail 4. Methods for adjusting the pumping amount of the friction modifier on the inner rail coating plate 6 include but are not limited to increasing the number of coating outlets for the inner rail 4, using a separate high-flow pipeline for the inner rail coating plate 6, or setting different pumping pressures on the inner rail coating plate 6 and the outer rail coating plate 2.

[0024] In this embodiment, in order to achieve differential coating of friction adjuster on the inner rail 4 and the outer rail 3, the number of outer rail coating outlets 1 on the outer rail coating plate 2 is less than the number of inner rail coating outlets 5 on the inner rail coating plate 6, and the diameter of the inner rail material transport pipeline 7 is smaller than the diameter of the outer rail material transport pipeline 14.

[0025] When the friction modifier is applied by the rail top friction modifier roadside coating device, the wheel-rail force remote monitoring and control system 10 can adjust the friction modifier coating parameters according to the wheel-rail lateral force detected by the lateral force strain gauge 12 and the wheel-rail vertical force detected by the vertical force strain gauge 13. If the detected wheel-rail lateral force or wheel-rail vertical force is too high, the friction modifier coating parameters are increased, and vice versa. The wheel-rail force monitoring technology is integrated into the roadside coating device through the application of the lateral force strain gauge 12 and the vertical force strain gauge 13, combined with data processing and remote transmission technology, so that the wheel-rail force and train dynamics data can be conveniently monitored, the safety of the train can be monitored in real time, and the field test of the friction modifier friction reduction adjustment effect is also reduced.

[0026] Since the friction modifier will affect the train dynamic parameters after coating, in order to ensure that the train dynamic parameters are below the safety limit, the wheel-rail force remote monitoring and control system 10 can calculate the train dynamic parameters according to the wheel-rail lateral force detected by the lateral force strain gauge 12 and the wheel-rail vertical force detected by the vertical force strain gauge 13, and then adjust the coating parameters of the friction modifier according to the train dynamic parameters. Specifically, the train dynamic parameters include the train derailment coefficient, the wheel axle lateral force and the wheel weight reduction rate. If the train derailment coefficient, the wheel axle lateral force and the wheel weight reduction rate exceed the safety limit, the coating parameters of the friction modifier are increased until the train derailment coefficient, the wheel axle lateral force and the wheel weight reduction rate are reduced to below the safety limit.

[0027] The friction modifier stored in the friction modifier storage module 8 is affected by conditions such as temperature and humidity, and its performance will deteriorate over time. Therefore, it is necessary to evaluate the performance of the friction modifier by monitoring parameters such as the viscosity, particle size and temperature of the friction modifier material. When there is a problem with the material performance of the friction modifier, the friction modifier coating parameters should be reduced or even the rail top friction reduction technology should be stopped to effectively ensure the safety of the rail top friction reduction technology. In this regard, in this embodiment, the material parameters of the friction modifier and the device application environment parameters are detected by the friction modifier storage module 8, and the wheel-rail force remote monitoring and control system 10 adjusts the friction modifier coating parameters according to the detection results. Among them, the material parameters of the friction modifier include viscosity, particle concentration and temperature. If the viscosity, particle concentration and temperature of the friction modifier are abnormal, the friction modifier coating parameters are reduced; the device application environment parameters include temperature, humidity and weather. If the temperature, humidity and weather exceed the preset limit, the friction modifier coating parameters are reduced.

[0028] Based on the above-mentioned rail top friction modifier wayside coating device and rail top friction modifier wayside coating adjustment method, the present invention can dynamically adjust parameters such as the coating amount or coating frequency of the friction modifier according to the wheel-rail force, and can achieve differential coating of the friction modifier on the inner rail 4 and the outer rail 3, thereby further reducing the coating amount of the friction modifier and reducing environmental pollution while achieving the best friction reduction effect.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rail top friction modifier roadside coating device, characterized in that: The invention comprises an outer rail coating plate (2), an inner rail coating plate (6), a friction modifier storage module (8), a lateral force strain gauge (12), a vertical force strain gauge (13), and a wheel-rail force remote monitoring control system (10). The outer rail coating plate (2) is connected to the friction modifier storage module (8) through an outer rail material transportation pipeline (14), the inner rail coating plate (6) is connected to the friction modifier storage module (8) through an inner rail material transportation pipeline (7), the friction modifier storage module (8) is connected to the wheel-rail force remote monitoring control system (10) through a storage module signal control line (9), the lateral force strain gauge (12) is attached to the top surface of the rail foot of the outer rail (3) and the inner rail (4), the vertical force strain gauge (13) is attached to the rail waist of the outer rail (3) and the inner rail (4), and both the lateral force strain gauge (12) and the vertical force strain gauge (13) are connected to the wheel-rail force remote monitoring control system (10) through a wheel-rail force signal control line (11).

2. The rail top friction modifier roadside coating device according to claim 1, characterized in that: The number of the outer rail coating outlets (1) on the outer rail coating plate (2) is less than the number of the inner rail coating outlets (5) on the inner rail coating plate (6).

3. The rail top friction modifier roadside coating device according to claim 1, characterized in that: The diameter of the inner rail material transport pipeline (7) is smaller than the diameter of the outer rail material transport pipeline (14).

4. The rail top friction modifier roadside coating device according to claim 1, characterized in that: The transverse force strain gauge (12) is pasted on the rail foot top surface of the straight-slow, slow-round, middle of the curve, round-slow and slow-straight points of the right curve, and the vertical force strain gauge (13) is pasted on the rail waist of the straight-slow, slow-round, middle of the curve, round-slow and slow-straight points of the right curve.

5. A method for applying a rail top friction modifier on the side of the road, characterized in that: The wheel-rail force remote monitoring and control system (10) adjusts the coating parameters of the friction modifier according to the wheel-rail force, train dynamics parameters, friction modifier material parameters or device application environment parameters; The wheel-rail force includes a wheel-rail lateral force and a wheel-rail vertical force. The wheel-rail lateral force is detected by a lateral force strain gauge (12), and the wheel-rail vertical force is detected by a vertical force strain gauge (13). The train dynamic parameters are calculated by the wheel-rail force remote monitoring and control system (10) according to the detected wheel-rail lateral force and wheel-rail vertical force; The friction modifier material parameters and the device application environment parameters are detected through the friction modifier storage module (8).

6. The coating and adjustment method of the rail top friction modifier roadside coating device according to claim 5, characterized in that: If the detected wheel-rail lateral force or wheel-rail vertical force is too high, the coating parameter of the friction modifier storage module (8) is increased, otherwise the coating parameter of the friction modifier storage module (8) is reduced.

7. The coating and adjustment method of the rail top friction modifier roadside coating device according to claim 5, characterized in that: The train dynamic parameters include the train derailment coefficient, axle lateral force and wheel weight reduction rate. If the train derailment coefficient, axle lateral force and wheel weight reduction rate exceed the safety limit, the coating parameters of the friction modifier will be increased until the train derailment coefficient, axle lateral force and wheel weight reduction rate are reduced to below the safety limit.

8. The coating and adjustment method of the rail top friction modifier roadside coating device according to claim 5, characterized in that: The material parameters of the friction modifier include viscosity, particle concentration and temperature. If the viscosity, particle concentration and temperature of the friction modifier are abnormal, the coating parameters of the friction modifier are reduced.

9. The coating and adjustment method of the rail top friction modifier roadside coating device according to claim 5, characterized in that: The device application environment parameters include temperature, humidity and weather. If the temperature, humidity and weather exceed the preset limits, the coating parameters of the friction modifier are reduced.

Images