Steel rail dressing and grinding device

Abstract

An intelligent steel rail dressing and grinding device. The whole device is composed of a traveling vehicle, a profile detection system, a mileage system, a grinding swing arm mechanism, a single chip microcomputer, a PLC control system and an electric control cabinet. After the traveling vehicle enters a grinding operation area, the steel rail profile is detected in real time during the traveling, the PLC control system automatically adjusts, according to data provided by the single chip microcomputer, the position and posture of each grinding swing arm mechanism, grinding is performed according to a preset steel rail profile, the grinding quality of a steel rail is evaluated by means of the rear profile detection system, and in combination with position information provided by the mileage system, grinding operation data is pushed point by point, significantly improving the grinding quality, efficiency and automation degree. The device can not only perform multistation automatic profile grinding on a steel rail on a track, but also detect the steel rail profile grinding quality in real time, and has the functions of synchronous detection, automatic profiling, multi-head grinding and real-time evaluation.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a railway maintenance machine, in particular to an intelligent steel rail dressing and grinding device which is used for multi position automatic profile grinding of rails on the line and has a function of real-time detecting and has a function of real-time detecting the rail profile grinding quality.BACKGROUND

[0002] After steel rails on a railway line are rolled to a certain extent, a profile shape of the rail changes, and a contact geometric relationship between a wheel set and the steel rail deteriorates, thus damaging a stability of operation and a service life of the steel rail. Therefore, since a speed increase of China's railway, the railway department has attached great importance to a profile grinding of railway rails. At present, the profile grinding is mainly carried out by small grinders, which has low efficiency and poor precision, the cost of dispatching large grinding trains is too high, and it is not suitable for local operations. The present disclosure can effectively solve the problem.

[0003] An application No. CN-U-203007757 provides a grinding vehicle laser positioning device and a grinding vehicle. The grinding vehicle laser positioning device comprises a laser transmitting module, a speed sensor and a control module, wherein the laser transmitting module is used for emitting set-angle laser beam intersected with a steel rail where the grinding vehicle is located; the speed sensor is used for detecting running speed of the grinding vehicle; and the control module is used for performing grinding operation when the fact that at least one grinding head on the grinding vehicle reaches a set grinding starting point is determined according to the speed and an interaction point and the set grinding starting point coincide. The speed sensor is electrically connected with the control module. The laser transmitting module is adopted to emit the set-angle laser beam intersected with the steel rail. When the interaction point of the laser beam and the steel rail and the set grinding starting point coincide, the control module collects the running speed of the grinding vehicle detected by the speed sensor and performs the grinding operation when the fact that the grinding head reaches the set grinding starting point is determined according to the speed, benchmarking is accurate, the grinding starting point is accurate, and grinding effect is improved.SUMMARY

[0004] The present disclosure aims to solve the above problem, so as to provide an intelligent steel rail dressing and grinding device with a function of synchronous detection, automatic profiling, multi head grinding and real-time evaluation.

[0005] The technical scheme adopted by the present disclosure to solve the problem is:

[0006] A steel rail dressing and grinding device, includes a traveling vehicle, a profile detection system, a mileage system, a grinding swing arm mechanism, a single chip microcomputer, a PLC control system, and an electric control cabinet, the profile detection system is set on a vehicle body of the traveling vehicle and consists of a plurality of laser displacement sensors arranged opposite to a plurality of characteristic points on a top of the rail, each of the laser displacement sensors is connected to the single chip microcomputer and is configured to continuously transmit a distance value detected to the corresponding characteristic points on the top of the rail to the single chip computer; the mileage system is provided at one end of the vehicle body of the traveling vehicle, and consists of a rotary encoder linked with a wheel and an industrial camera, the rotary encoder is configured to record the number of the wheel revolutions, and the industrial camera is configured to collect a milestone image, the rotary encoder and the industrial camera are respectively connected to the single chip microcomputer to transmit a position information of the equipment through the single chip microcomputer; N grinding swing arm mechanisms are provided and arranged on both sides of the vehicle body of the traveling vehicle corresponding to two rails, an inside of the grinding swing arm mechanism is respectively provided with a stepping motor configured to drive a grinder to lift, traverse, deflect, and lock, an inclination sensor configured to detect a lifting and deflection angle of the grinder, and a displacement sensor configured to detect a traverse amount of the grinder, a driver of each stepping motor is connected to the PLC control system, the inclination sensor and the displacement sensor are respectively connected to the single chip microcomputer to provide the position and attitude information of the grinder to the single chip microcomputer from three dimensions, an inside of the electric control cabinet is provided with a current variable sensor connected to the single chip microcomputer and configured to provide the single chip microcomputer with a load current change information of the grinder; the single-chip microcomputer is connected to the PLC control system to provide instruction basis for the PLC control system, and the PLC control system controls all actions of running, adjustment, and grinding of the equipment according to instructions provided by the single-chip microcomputer.

[0007] Compared with the prior art, the present disclosure adopting the above technical scheme has the following outstanding features: ① The device can not only carry out multi position automatic profile grinding for the rail on the line, but also detect the rail profile grinding quality in real time, it has the functions of synchronous detection, automatic profiling, multi head grinding and real-time evaluation. ② Compared with a small grinder, it has an advantage of cross generation in grinding accuracy and efficiency, in profile grinding, the advantages are more obvious. ③ Compared with the grinding train, it has characteristics of compact structure, flexible operation and high cost-effectiveness ratio, and is suitable for an independent use of the first-class construction unit of public works section of the railway administration.

[0008] As a preferred solution, the further technical scheme of the present disclosure is: the vehicle body is an I-shaped structure, 1 / 2*N grinding swing arm mechanisms are mounted on two corresponding rails on both sides of the vehicle bod, the vehicle body and a box of the grinding swing arm mechanism form a composite structure of an I-beam and a box beam, both ends of the vehicle body are respectively provided with a wheel pair group having a power, motors of the wheel pair group are connected to a same frequency converter, the vehicle body is rigidly connected to one wheel pair group and hinged to the other wheel pair group.

[0009] Front and rear ends of the vehicle body are receptively provided the profile detection system, the profile detection system on the front is configured to detect the rail profile before grinding, and the profile detection system on the rear is configured to detect the rail profile after grinding.

[0010] The laser displacement sensors of the profile detection system are arranged concentrically with a point on the rail centerline below the top of rail as the center of the circle, all of the laser displacement sensors are mounted in a frame processed by a numerical control machine, and the frame is fixed on the vehicle body.

[0011] A base plate is fixedly mounted on the vehicle body, an arc-shaped guide rail, a rack sliding stepping motor, a pressing wheel, and an arc-shaped rack are respectively mounted on the base plate, a driver of the rack sliding stepping motor is connected to the PLC control system, and a driving gear of the rack sliding stepping motor is engaged with the arc-shaped rack, the arc-shaped rack is in close contact with the base plate through the pressing wheel and is capable of sliding along the arc-shaped guide rail under the driving of the driving gear of the rack sliding stepping motor, and the laser displacement sensors are evenly distributed on the arc-shaped rack.

[0012] The the grinding swing arm mechanism consists of the grinder, a grinder base, a swing arm, and a bracket, the grinder is fixedly mounted on the grinder base, the grinder base is slidably mounted on the swing arm, a rear end of the swing arm is hinged on the bracket through a rotating shaft, and the bracket is fixedly mounted on the vehicle body, the stepping motor comprises a lifting stepping motor configured to drive the swing arm to rotate around the rotating shaft, a traverse stepping motor configured to drive the grinder base to slide on the swing arm, a deflection stepping motor configured to drive the grinder base to deflect, and a locking stepping motor configured to lock the grinder base.

[0013] The lifting stepping motor is fixedly mounted on the bracket, a driving shaft of the lifting stepping motor is connected to the swing arm through a first roller screw pair, the swing arm is driven to rotate around the rotating shaft by driving the first roller screw pair, thereby driving the grinder on the grinder base to lift, a first inclination sensor is mounted on the swing arm and is configured to provide the rotation angle information of the swing arm to the single chip microcomputer.

[0014] The swing arm has a box-shaped structure, the traverse stepping motor is fixedly mounted in a box of the swing arm, the box is also provided with a second roller screw pair, one end of a lead screw of the second roller screw pair is fixedly connected to a drive shaft of the traverse stepping motor, the other end of the lead screw is mounted in the box through a bearing seat, the grinder base is provided on a sliding nut of the second roller screw pair, the sliding nut is mounted with a pull rope displacement sensor configured to provide the single-chip microcomputer with information of the radius change when the grinding wheel rotates around the rotating shaft, the traverse stepping motor drives the grinder base on the sliding nut to move laterally by driving the lead screw of the second roller screw pair to rotate.

[0015] The deflection stepping motor is fixedly mounted on the box, a first locking hexagonal shaft is provided outside the box, and a drive shaft of the deflection stepping motor is connected to the first locking hexagonal shaft through a deflection driving gear, a deflection driven gear / hexagonal sleeve to drive the first locking hexagonal shaft to rotate, the first locking hexagonal shaft is fixedly connected to a worm, the sliding nut is mounted with a turbine matched with the worm through a positioning bolt, the grinder base is fixedly mounted on the turbine, the grinder base is mounted to a turbine housing covered outside the turbine, the grinder is mounted with a second inclination sensor configured to provide deflection angle information of the grinder to the single chip microcomputer, the deflection stepping motor drives the grinder base on the turbine to deflect by driving the first locking hexagonal shaft and the worm to rotate.

[0016] The locking stepping motor is fixedly mounted on the box, and a second locking hexagonal shaft is provided outside the box, a driving shaft of the locking stepping motor is connected to a second locking hexagonal shaft through a locking driving gear, a locking driven gear / hexagonal sleeve to drive the second locking hexagonal shaft to rotate, the second locking hexagonal shaft is fixedly connected to a double head screw, the double head screw is provided with threads rotating in opposite directions and is mounted with two inclined nuts, a tension screw is provided between the two inclined nuts, the double head screw is connected to the sliding nut through the tension screw, an inclined slider matched with two inclined nuts is provided between the double head screw and the box, the locking stepping motor drives the two inclined plane nuts to move toward each other along the inclined plane slider by driving the second locking hexagonal shaft and the double head screw to rotate, and a gap between the grinder and the box of the swing arm is locked through the tension screw, so as to lock the grinder base.BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG. 1 is a front view of a first embodiment according to the present disclosure. FIG. 2 is a left view of the first embodiment according to the present disclosure. FIG. 3 is a right view of the first embodiment according to the present disclosure. FIG. 4 is a cross-sectional view taken along a line V-V of FIG. 1. FIG. 5 is a top view of the first embodiment according to the present disclosure. FIG. 6 is a bottom view of the first embodiment according to the present disclosure. FIG. 7 is a schematic view of a vehicle body hinged to a wheel set of the first embodiment according to the present disclosure. FIG. 8 is a bottom view of FIG. 7. FIG. 9 is a front view of a polishing swing arm mechanism of the first embodiment according to the present disclosure. FIG. 10 is a top view of the polishing swing arm mechanism of the first embodiment according to the present disclosure. FIG. 11 is a partially enlarged view in K direction in FIG. 10. FIG. 12 is a cross-sectional view taken along a line B-B in FIG. 11. FIG. 13 is a schematic view of a grinder grinding the rail of the first embodiment according to the present disclosure. FIG. 14 is a block diagram of a control system of the first embodiment according to the present disclosure. FIG. 15 is a schematic view of a profile detection system of the first embodiment according to the present disclosure. FIG. 16 is a schematic view of a laser displacement sensor of the first embodiment according to the present disclosure. FIG. 17 is a schematic view of a profile detection system of the first embodiment according to the present disclosure. FIG. 18 is a cross-sectional view from a side view of FIG. 17.

[0018] In the drawings: vehicle body A, industrial camera B, rear profile detection system C, rear wheel pair group D, grinding monitoring camera E, working lamp F, front wheel pair group G, front profile detection system H, driving camera I, driving lamp J, silent diesel generator set K, first electric control cabinet L, second electric control cabinet M, N, rotary encoder O, industrial control display screen P, video display R, box S, current variable sensor U, lifting stepping motor V1, traverse stepping motor V2, deflection stepping motor V3, locking stepping motor V4, first inclination sensor W, second inclination sensor X, pull rope displacement sensor Y, swing arm Z, first roller screw pair 1; grinder base 2, bracket 3, slide nut 4, turbine 5, worm gear housing 6, worm 7, locking driving gear 8, locking driven gear / hexagonal sleeve 9, second locking hexagonal shaft 10, double head screw 11, tension screw 12, bevel nut 13, inclined slider 14, deflection driving gear 15, deflection driven gear / hexagonal sleeve 16, first locking hexagonal shaft 17, grinder 18, cup-shaped grinding wheel 19, lead screw 20, base plate 21, pressing wheel 22, rack sliding stepping motor 23, drive gear 24, arc-shaped rack 25, arc-shaped guide rail 26, laser displacement sensor 27, frame 28.DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following is a further description of the present disclosure in combination with the embodiments for the purpose of better understanding the contents of the present disclosure. Therefore, the embodiments do not limit the scope of protection of the present disclosure.Embodiment 1:

[0020] Referring to FIG. 1 to FIG. 16, an intelligent steel rail dressing and grinding device includes a traveling vehicle, a profile detection system, a mileage system, a grinding swing arm mechanism, a single chip microcomputer, a PLC control system, and an electric control cabinet.

[0021] A vehicle body A of the traveling vehicle is an I-shaped structure. Six grinding swing arm mechanisms are mounted on two corresponding rails on both sides of the vehicle body A. The vehicle body A and a box j of the grinding swing arm mechanism form a composite structure of an I-beam and a box beam. A front wheel pair group G and a rear wheel pair group D having a power are respectively provided at both ends of the vehicle body A, a motor of the front wheel pair group G and a motor of the rear wheel pair group D are controlled by the same frequency converter, which can jointly drive vehicle body A and realize stepless speed regulation and synchronous operation. The vehicle body A is rigidly connected to one wheel pair group and is hinged to the other wheel pair group, so as to ensure that four wheel pairs are in good contact with the rail in any case. All units of the equipment are carried by the vehicle body A.

[0022] The profile detection system consists of twelve laser displacement sensors 27 arranged concentrically along a center line of the rail, with a circle center of 60mm below a top of the rail, a radius of 300mm. Each of the laser displacement sensors 27 is connected to a single chip microcomputer. During operation, each laser displacement sensor 27 continuously detects a distance to corresponding characteristic point of a top of the rail, and a measured value is continuously transmitted to the single chip microcomputer to generate a profile graph of a top portion of the detected rail, which is configured to compare with a standard rail profile stored in the single chip microcomputer to obtain an error value. All laser displacement sensors 27 are mounted in a frame 28 processed by a numerical control machine to ensure correct position. The frame 28 is fixed to the vehicle body A. Two profile detection systems are respectively provided at front and rear ends of the vehicle body A. The profile detection system H on the front detects a rail profile error value before grinding through the single chip microcomputer, and the profile detection system C on the rear detects a quality of the rail after grinding through the single chip microcomputer.

[0023] The mileage system is provided at one end of the vehicle body A of the traveling vehicle, and consists of a rotary encoder O linked with the wheel and an industrial camera B. The rotary encoder O is configured to record a travel corresponding to the number of the wheel revolutions. The industrial camera B is configured to collect a milestone image, determine a travel mileage of the equipment on the line, and eliminate the error of the rotary encoder O due to a slip of the wheel. The rotary encoder O and the industrial camera B are respectively connected to the single chip microcomputer, the two work together to provide accurate position information of the equipment.

[0024] Twelve grinding swing arm mechanisms are provided and arranged on both sides of the vehicle body A of the traveling vehicle corresponding to the two rails. An inside of the grinding swing arm mechanism is respectively provided with a stepping motor configured to drive a grinder to lift, traverse, deflect, and lock, an inclination sensor configured to detect a lifting and deflection angle of the grinder, and a displacement sensor configured to detect a traverse amount of the grinder. A driver of each stepping motor is connected to the PLC control system. The inclination sensor and the displacement sensor are respectively connected to the single chip microcomputer to provide the position and attitude information of the grinder to the single chip microcomputer from three dimensions. An inside of the electric control cabinet is provided with a current variable sensor U connected to the single chip microcomputer and configured to provide the single chip microcomputer with the load current change information of the grinder.

[0025] The grinding swing arm mechanism consists of a grinder 18, a grinder base 2, a swing arm Z and a bracket 3. The grinder 18 uses a Y100-2 motor, the grinder 18 is fixedly mounted on the grinder base 2, and the grinder base 2 is slidably mounted on the swing arm Z. A rear end of the swing arm Z is hinged on the bracket 3 through a rotating shaft. The bracket 3 is fixedly mounted on the vehicle body A. The stepping motor includes a lifting stepping motor V1 configured to drive the swing arm Z to rotate around the rotating shaft, a traverse stepping motor V2 configured to drive the grinder base 2 to slide on the swing arm Z, a deflection stepping motor V3 configured to drive the grinder base 2 to deflect, and a locking stepping motor V4 configured to lock the grinder base 2. The four stepping motors are controlled by PLC level.

[0026] The lifting stepping motor V1 is fixedly mounted on the bracket 3. A driving shaft of the lifting stepping motor V1 is connected to the swing arm Z through a first roller screw pair 1. The first roller screw pair 1 is driven to drive the swing arm Z to rotate around the rotating shaft, thereby driving the grinder 18 on the grinder base 2 to lift. A first inclination sensor W is mounted the on the swing arm Z and is configured to provide the single chip microcomputer with the rotation angle information of the swing arm Z.

[0027] The swing arm Z has a box-shaped structure. The traverse stepping motor V2 is fixedly mounted in a box of the swing arm Z. The box is also provided with a second roller screw pair. One end of a lead screw 20 of the second roller screw pair is fixedly connected to a drive shaft of the traverse stepping motor V2, the other end of the lead screw 20 is mounted in the box through a bearing seat. The grinder base 2 is provided on a sliding nut 4 of the second roller screw pair, the sliding nut 4 is mounted with a pull rope displacement sensor Y configured to provide the single-chip microcomputer with information of the radius change when the grinding wheel 18 rotates around the rotating shaft. The traverse stepping motor V2 drives the grinder base 2 on the sliding nut 4 to move laterally by driving the lead screw 20 of the second roller screw pair to rotate.

[0028] The deflection stepping motor V3 is fixedly mounted on the box, a first locking hexagonal shaft 17 is provided outside the box. A drive shaft of the deflection stepping motor V3 is connected to the first locking hexagonal shaft 17 through a deflection driving gear 15, a deflection driven gear / hexagonal sleeve 16, so as to drive the first locking hexagonal shaft 17 to rotate. The first locking hexagonal shaft 17 is fixedly connected to a worm 7, the sliding nut 4 is mounted with a turbine 5 matched with the worm 7 through a positioning bolt. The grinder base 2 is fixedly mounted on the turbine 5, the grinder base 2 is mounted with a turbine housing 6 covered outside the turbine 5. The grinder 2 is mounted with a second inclination sensor X configured to provide deflection angle information of the grinder 18 to the single chip microcomputer. The deflection stepping motor V3 drives the grinder base 2 on the turbine 5 to deflect by driving the first locking hexagonal shaft 17 and the worm 7 to rotate.

[0029] The locking stepping motor V4 is fixedly mounted on the box, and a second locking hexagonal shaft 10 is provided outside the box. A driving shaft of the locking stepping motor V4 is connected to a second locking hexagonal shaft 10 through a locking driving gear 8, a locking driven gear / hexagonal sleeve 9, so as to drive the second locking hexagonal shaft 10 to rotate. The second locking hexagonal shaft 10 is fixedly connected to a double head screw 11, the double head screw 11 is provided with threads rotating in opposite directions and is mounted with two inclined nuts 13. A tension screw 12 is provided between the two inclined nuts 13, the double head screw 11 is connected to the sliding nut 4 through the tension screw 12. An inclined slider 14 matched with two inclined nuts 13 is provided between the double head screw 11 and the box. The locking stepping motor V4 drives the two inclined plane nuts 13 to move toward each other along the inclined plane slider 14 by driving the second locking hexagonal shaft 10 and the double head screw 11 to rotate, and a gap between the grinder 18 and the box of the swing arm Z is locked through the tension screw 12, so as to lock the grinder base 2.

[0030] The electric control cabinet includes a first electric control cabinet L provided inside and outside a cab and a second electric control cabinet M provided outside the cab. A hardware part of the single-chip microcomputer is mounted in the second electric control cabinet M. There are a variety of data streams merged into a data storage module of the single-chip microcomputer, including: (1) the rail profile detection information provided by the profile detection system; (2) fixed point information provided by mileage system; (3) embedded in a grinding mechanism, the spatial position information of the grinding mechanism is provided by the first inclination sensor W (lifting), the second inclination sensor X (deflection) and a group of pull rope displacement sensor Y (traverse); (4) information of load current change of grinding motor e provided by current variable sensor U. There are many kinds of data stored in the data storage module of single chip microcomputer, including: (1) standard profiles of various specifications of rails; (2) spatial position parameters of the grinding swing arm mechanism; (3) grinding operation modes, i.e. preventive grinding, repair grinding and profile (section) grinding. The above information is processed together to provide a basis for the PLC control system to operate.

[0031] A hardware part of the PLC control system is mounted in the second electric control cabinet M. Its structure is: PLC subsystems - a PLC core system - a display screen. Twelve PLC subsystems, each corresponding to control four stepping motors in one of the grinding swing arm mechanisms, complete the lifting, traverse, deflection, locking and other actions of the polishing swing arm mechanism. The display screen consists of an industrial control display screen P and a video display screen R. The PLC core system is connected to the industrial control display screen P and the video display screen R. The twelve PLC subsystems are centrally controlled through the industrial control display screen P and video display screen R.

[0032] The front of the vehicle body Ais provided with a driving camera I and a driving lamp J to perform video monitoring in front of the vehicle. A lower end of the vehicle body A is further provided with a grinding monitoring camera E and a working lamp F to observe the grinding operation. The vehicle body A is also mounted with a silent diesel generator set K, the silent diesel generator set K provides all power for the equipment.

[0033] In the equipment: the profile detection system detects several characteristic points on the top of the rail in real time through the laser displacement sensor 27. The rail section graph generated through the single chip microcomputer is compared with the stored rail standard graph to obtain the profile error value of the rail to be polished, and the grinding operation data is provided. In the mileage system, the rotary encoder O is combined with the industrial camera B, the position information of the equipment is transmit through the single chip microcomputer, the single-chip microcomputer calculates and processes the imported rail profile information, the position and attitude information of the grinding swing arm mechanism, the mileage information, the load change of the grinding motor and other information, so as to provide the instruction basis for the PLC control system, the PLC control system controls all movements of the equipment, such as walking, adjusting and grinding through the screen display terminal, in the swing arm grinding mechanism, the lifting, traverse, deflection and locking functions driven by the stepping motor are integrated, and a plurality of displacement sensors and inclination sensors are embedded to feed back the position and attitude information of the grinder 18 and its cup-shaped grinding wheel 19 to the single chip microcomputer, the middle part of the vehicle body A is an I-shaped structure, and two group of wheel sets with their own power are respectively set at both ends to form a four-wheel (group) drive layout, one wheel set is connected to the I-shaped structure by a hinge and bolt connection, so as to ensure that all wheel sets are in contact with a rail tread when walking, all power is supplied by the silent diesel generator set K of the vehicle.

[0034] A working mode of the present disclosure is: Step 1: a hoisting enters to a site. Step 2: start the silent diesel generator set for power preparation. Step 3: start the PLC control system, and all grinding swing arm mechanisms are reset automatically. Step 4: turn on the power supply of the grinding motor and start the grinding motors one by one. Step 5: start a running system, and gradually accelerate the vehicle body to a grinding running speed. Step 6: operate a PLC industrial control terminal to select a track type and an operation mode. Step 7: perform tool setting and automatic grinding. Step 8: automatically detect the grinding quality and perform the evaluation. Step 9: the hoisting is evacuated from the site. Embodiment 2:

[0035] Referring to FIG. 17 and FIG. 18, differences from the structure of embodiment 1 are that: three laser displacement sensors 27 are provided, a base plate 21 is fixed to the vehicle body A. An arc-shaped guide rail 26, a rack sliding stepping motor 23, a pressing wheel 23, and an arc-shaped rack 25 are respectively mounted to the base plate 21. A driver of the rack sliding stepping motor 23 is connected to the PLC control system, and a driving gear 24 of the rack sliding stepping motor 23 is engaged with the arc-shaped rack 25. The arc-shaped rack 25 is in close contact with the base plate 21 through the pressing wheel 22 and can slide along the arc-shaped guide rail 26 under the driving of the driving gear 24 of the rack sliding stepping motor 24. Three laser displacement sensors 27 are embedded on the arc-shaped rack 25 and are spaced apart by four angular units (one angular unit =8.6°). During operation, when the rack sliding stepping motor 24 drives the arc-shaped rack 25 to rotate an angular unit, the laser displacement sensor 27 collects the measurement data of the corresponding feature points and uploads them to the single chip microcomputer. After rotating four angular units, the measurement of twelve feature points is completed. Then the PLC control system controls the rack sliding stepping motor 23 to implement the commutation, the next round of measurement is carried out according to the above procedures. The PLC control system controls the rack sliding stepping motor 23 to drive the arc rack 25 to rotate back and forth according to the set angle unit, and continuously uploads the measured data of multiple corresponding feature points to the single chip microcomputer.

[0036] The equipment can not only carry out multi position automatic profile grinding for the rail on the line, but also detect the quality of grinding the rail profile in real time. It has the functions of synchronous detection, automatic profiling, multi head grinding and real-time evaluation. Compared with small grinder, it has the advantages of cross generation in grinding accuracy and efficiency. In profile grinding, the advantages are more apparent. Compared with the grinding train, it has the characteristics of compact structure, flexible operation and high cost-effectiveness ratio, and is suitable for the independent use of the first-class construction unit of the public works section of the railway administration.

Claims

1. A steel rail dressing and grinding device, comprises a traveling vehicle, a profile detection system (H), a mileage system, a grinding swing arm mechanism, a single chip microcomputer, a PLC control system, and an electric control cabinet (M), characterized in that, the profile detection system (H) is set on a vehicle body (A) of the traveling vehicle and consists of a plurality of laser displacement sensors (27) arranged opposite to a plurality of characteristic points on a top of the rail, each of the laser displacement sensors (27) is connected to the single chip microcomputer and is configured to continuously transmit a distance value detected to the corresponding characteristic points on the top of the rail to the single chip computer; the mileage system is provided at one end of the vehicle body (A) of the traveling vehicle, and consists of a rotary encoder (O) linked with a wheel and an industrial camera (B), the rotary encoder (O) is configured to record the number of the wheel revolutions, and the industrial camera (B) is configured to collect a milestone image, the rotary encoder (O) and the industrial camera (B) are respectively connected to the single chip microcomputer to transmit a position information of the equipment through the single chip microcomputer; N grinding swing arm mechanisms are provided and arranged on both sides of the vehicle body (A) of the traveling vehicle corresponding to two rails, an inside of the grinding swing arm mechanism is respectively provided with a stepping motor (23) configured to drive a grinder (18) to lift, traverse, deflect, and lock, an inclination sensor (X) configured to detect a lifting and deflection angle of the grinder (18), and a displacement sensor configured to detect a traverse amount of the grinder (18), a driver of each stepping motor (23) is connected to the PLC control system, the inclination sensor (X) and the displacement sensor are respectively connected to the single chip microcomputer to provide the position and attitude information of the grinder (18) to the single chip microcomputer from three dimensions, an inside of the electric control cabinet (M) is provided with a current variable sensor (U) connected to the single chip microcomputer and configured to provide the single chip microcomputer with a load current change information of the grinder (18); the single chip microcomputer is connected to the PLC control system to provide instruction basis for the PLC control system, and the PLC control system controls all actions of running, adjustment, and grinding of the equipment according to instructions provided by the single chip microcomputer.

2. The steel rail dressing and grinding device according to claim 1, wherein the vehicle body (A) is an I-shaped structure, 1 / 2*N grinding swing arm mechanisms are mounted on two corresponding rails on both sides of the vehicle body (A), the vehicle body (A) and a box of the grinding swing arm mechanism form a composite structure of an I-beam and a box beam, both ends of the vehicle body (A) are respectively provided with a wheel pair group (D) having a power, motors of the wheel pair group (D) are connected to a same frequency converter, the vehicle body (A) is rigidly connected to one wheel pair group (D) and hinged to the other wheel pair group (D).

3. The steel rail dressing and grinding device according to claim 1, wherein front and rear ends of the vehicle body (A) are receptively provided the profile detection system (H), the profile detection system (H) on the front is configured to detect the rail profile before grinding, and the profile detection system (H) on the rear is configured to detect the rail profile after grinding.

4. The steel rail dressing and grinding device according to claim 1 or 3, wherein the laser displacement sensors (27) of the profile detection system (H) are arranged concentrically with a point on the rail centerline below the top of rail as the center of the circle, all of the laser displacement sensors (27) are mounted in a frame (28) processed by a numerical control machine, and the frame (28) is fixed on the vehicle body (A).

5. The steel rail dressing and grinding device according to claim 1 or 3, wherein a base plate (21) is fixedly mounted on the vehicle body (A), an arc-shaped guide rail (26), a rack sliding stepping motor (23), a pressing wheel (22), and an arc-shaped rack (25) are respectively mounted on the base plate (21), a driver of the rack sliding stepping motor (23) is connected to the PLC control system, and a driving gear (15) of the rack sliding stepping motor (23) is engaged with the arc-shaped rack (25), the arc-shaped rack (25) is in close contact with the base plate (21) through the pressing wheel (22) and is capable of sliding along the arc-shaped guide rail (26) under the driving of the driving gear (15) of the rack sliding stepping motor (23), and the laser displacement sensors (27) are evenly distributed on the arc-shaped rack (25).

6. The steel rail dressing and grinding device according to claim 1, wherein the grinding swing arm mechanism consists of the grinder (18), a grinder base (2), a swing arm, and a bracket (3), the grinder (18) is fixedly mounted on the grinder base (2), the grinder base (2) is slidably mounted on the swing arm, a rear end of the swing arm is hinged on the bracket (3) through a rotating shaft, and the bracket (3) is fixedly mounted on the vehicle body (A), the stepping motor (23) comprises a lifting stepping motor (23) configured to drive the swing arm to rotate around the rotating shaft, a traverse stepping motor (23) configured to drive the grinder base (2) to slide on the swing arm, a deflection stepping motor (23) configured to drive the grinder base (2) to deflect, and a locking stepping motor (23) configured to lock the grinder base (2).

7. The steel rail dressing and grinding device according to claim 6, wherein the lifting stepping motor (23) is fixedly mounted on the bracket (3), a driving shaft of the lifting stepping motor (23) is connected to the swing arm through a first roller screw pair (1), the swing arm is driven to rotate around the rotating shaft by driving the first roller screw pair (1), thereby driving the grinder (18) on the grinder base (2) to lift, a first inclination sensor (X) is mounted on the swing arm and is configured to provide the rotation angle information of the swing arm to the single chip microcomputer.

8. The steel rail dressing and grinding device according to claim 6, wherein the swing arm has a box-shaped structure, the traverse stepping motor (23) is fixedly mounted in a box of the swing arm, the box is also provided with a second roller screw pair, one end of a lead screw (20) of the second roller screw pair is fixedly connected to a drive shaft of the traverse stepping motor (23), the other end of the lead screw (20) is mounted in the box through a bearing seat, the grinder base (2) is provided on a sliding nut (4) of the second roller screw pair, the sliding nut (4) is mounted with a pull rope displacement sensor configured to provide the single chip microcomputer with information of the radius change when the grinding wheel (19) rotates around the rotating shaft, the traverse stepping motor (23) drives the grinder base (2) on the sliding nut (4) to move laterally by driving the lead screw (20) of the second roller screw pair to rotate.

9. The steel rail dressing and grinding device according to claim 8, wherein the deflection stepping motor (23) is fixedly mounted on the box, a first locking hexagonal shaft (17) is provided outside the box, and a drive shaft of the deflection stepping motor (23) is connected to the first locking hexagonal shaft (17) through a deflection driving gear (15), a deflection driven gear / hexagonal sleeve to drive the first locking hexagonal shaft (17) to rotate, the first locking hexagonal shaft (17) is fixedly connected to a worm, the sliding nut (4) is mounted with a turbine (5) matched with the worm through a positioning bolt, the grinder base (2) is fixedly mounted on the turbine (5), the grinder base (2) is mounted to a turbine (5) housing covered outside the turbine (5), the grinder (18) is mounted with a second inclination sensor (X) configured to provide deflection angle information of the grinder (18) to the single chip microcomputer, the deflection stepping motor (23) drives the grinder (18) base on the turbine (5) to deflect by driving the first locking hexagonal shaft (17) and the worm to rotate.

10. The steel rail dressing and grinding device according to claim 8, wherein the locking stepping motor (23) is fixedly mounted on the box, and a second locking hexagonal shaft (17) is provided outside the box, a driving shaft of the locking stepping motor (23) is connected to a second locking hexagonal shaft (17) through a locking driving gear (15), a locking driven gear / hexagonal sleeve to drive the second locking hexagonal shaft (17) to rotate, the second locking hexagonal shaft (17) is fixedly connected to a double head screw (11), the double head screw (11) is provided with threads rotating in opposite directions and is mounted with two inclined nuts, a tension screw (12) is provided between the two inclined nuts, the double head screw (11) is connected to the sliding nut (4) through the tension screw (12), an inclined slider (14) matched with two inclined nuts is provided between the double head screw (11) and the box, the locking stepping motor (23) drives the two inclined plane nuts (13) to move toward each other along the inclined plane slider by driving the second locking hexagonal shaft (17) and the double head screw (11) to rotate, and a gap between the grinder (18) and the box of the swing arm is locked through the tension screw (12), so as to lock the grinder base (2).

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