阅读说明：本技术 一种钢轨型面智能修复车 (Intelligent repairing vehicle for steel rail profile ) 是由 宋剑锋 何�轩 时迎港 王栋 潘恒志 董文杰 张京城 于 2021-08-19 设计创作，主要内容包括：本发明提供一种钢轨型面智能修复车,其包括车身、工作台及显示器、轨道表面损伤检测、轨道表面预处理装置、激光修复装置以及辊压成型装置,车身的底部设置有车轮,轨道表面损伤检测、轨道表面预处理装置、激光修复装置以及辊压成型装置依次设置在车身上,轨道表面损伤检测用于对已损伤的轨道表面进行检测,轨道表面预处理装置用于对待修复轨道进行表面预处理,激光修复装置用于对待修复轨道利用激光熔覆的方式进行修复。本发明的激光修复装置的机械手臂拥有多个自由度可以满足激光修复时的动作要求,在机械手臂上安装上了同轴送粉器,克服了侧向送粉单向性的缺点,大大提高了成型的质量。(The invention provides an intelligent steel rail profile repairing vehicle which comprises a vehicle body, a workbench, a display, a rail surface damage detection device, a rail surface pretreatment device, a laser repairing device and a rolling forming device, wherein wheels are arranged at the bottom of the vehicle body, the rail surface damage detection device, the rail surface pretreatment device, the laser repairing device and the rolling forming device are sequentially arranged on the vehicle body, the rail surface damage detection device is used for detecting the damaged rail surface, the rail surface pretreatment device is used for performing surface pretreatment on a rail to be repaired, and the laser repairing device is used for repairing the rail to be repaired in a laser cladding mode. The mechanical arm of the laser repairing device provided by the invention has multiple degrees of freedom, can meet the action requirement during laser repairing, and the coaxial powder feeder is arranged on the mechanical arm, so that the defect of unidirectional lateral powder feeding is overcome, and the forming quality is greatly improved.)

1. The utility model provides a car is restoreed to rail profile intelligence which characterized in that: the device comprises a vehicle body, a workbench, a display, a rail surface damage detection device, a rail surface pretreatment device, a laser repair device and a roll forming device, wherein wheels are arranged at the bottom of the vehicle body, the rail surface damage detection device, the rail surface pretreatment device, the laser repair device and the roll forming device are sequentially arranged on the vehicle body, the rail surface damage detection device is used for detecting the damaged rail surface, the rail surface pretreatment device is used for performing surface pretreatment on a rail to be repaired, the laser repair device is used for repairing the rail to be repaired in a laser cladding mode, and the roll forming device is used for monitoring the repair state and performing roll forming on the rail surface subjected to laser repair after laser cladding;

the vehicle body comprises a vehicle cover, a first side vehicle baffle, a vehicle chassis, a second side vehicle baffle, a heat-insulating cover, front wheels and rear wheels, wherein the front wheels and the rear wheels are connected with the bottom surface of the vehicle chassis and then are respectively placed on two steel rails to be repaired; the workbench and the display are fixedly connected with the chassis through a third connecting plate;

the surface pretreatment device comprises a laser scanner, an air compressor, an air inlet pipe, a fourth connecting plate, an air pressure lifting device, an air outlet, a driving motor, a transmission shaft and a track grinding wheel, wherein the air pressure lifting device is connected with the chassis by means of the fourth connecting plate, the driving motor is connected with the track grinding wheel through the transmission shaft, the laser scanner is used for scanning the track, and when the laser scanner scans the track and is damaged, the air compressor starts to work and gas is introduced through the air inlet pipe to enable the air pressure lifting device to move downwards so that the track grinding wheel is in full contact with the track to be repaired; the motor starts to operate to enable the transmission shaft to drive the track grinding wheel to start to rotate, and surface pretreatment is carried out on the track to be repaired;

the laser repairing device comprises a chassis motor, a connecting plate, a rotating chassis, a first motor, a first mechanical arm joint, a second motor, a mechanical arm connecting shaft, a second mechanical arm joint, a third motor, a powder box, a laser box, a protective gas storage tank, an optical fiber, a protective gas conveying pipe, a powder conveying pipe and a coaxial powder feeder, wherein the first mechanical arm joint, the mechanical arm connecting shaft and the second mechanical arm joint are arranged on the rotating chassis;

the chassis motor is arranged on the chassis, a fifth connecting plate is arranged above the chassis motor, a rotating chassis is arranged on the fifth connecting plate, a first end of a first joint of the mechanical arm and the first motor are arranged on the rotating chassis, a second end of the first joint of the mechanical arm is connected with a first end of a second joint of the mechanical arm, a second end of the second joint of the mechanical arm is connected with the coaxial powder feeder, the second motor is fixed on the first joint of the mechanical arm, the third motor is fixed on the second joint of the mechanical arm, the coaxial powder feeder is connected with an optical fiber, a protective gas conveying pipe and a powder feeding pipe, the other ends of the optical fiber, the protective gas conveying pipe and the powder feeding pipe are respectively connected with the powder box, the laser box and a protective gas storage tank, and the powder box, the laser box and the protective gas storage tank are respectively fixed on the chassis, the laser box conveys laser to the coaxial powder feeder through an optical fiber, the powder box is connected with the coaxial powder feeder through a powder conveying pipe to achieve the purpose of conveying track repairing materials, and protective gas in the laser repairing process enters the coaxial powder feeder from a protective gas conveying pipe through a protective gas storage tank;

when a damaged track is detected, the chassis motor, the first motor and the second motor are started to enable the coaxial powder feeder to reach the surface of the track to be repaired, then the laser box starts to convey laser, meanwhile, the powder box and the protective storage tank respectively start to convey repairing materials and protective gas to enter the coaxial powder feeder to start laser repair, and then the third motor is started to enable the axial powder feeder to transversely translate, so that adjustability of a laser cladding working area is achieved, and repair work of the surface of the track is completed.

2. The intelligent steel rail profile repairing vehicle according to claim 1, wherein: the safety cover can cover and establish coaxial powder feeder's outside, the safety cover is including cover body and apron, the apron is the deformable high temperature resistant rubber who takes the crackle.

3. The intelligent steel rail profile repairing vehicle according to claim 1, wherein: the track grinding wheel comprises a grinding wheel protective cover, a track special grinding wheel, a rolling bearing and a connecting piece, wherein the grinding wheel protective cover is connected with the air pressure lifting device, the grinding wheel protective cover is connected with the transmission shaft through the connecting piece, and the track special grinding wheel rotates under the transmission of the rolling bearing, so that impurities on the surface of the track to be repaired are removed.

4. The intelligent steel rail profile repairing vehicle of claim 3, wherein: the shape of the special track grinding wheel is matched with the upper side surface of the track.

5. The intelligent steel rail profile repairing vehicle according to claim 1, wherein: coaxial powder feeder has set gradually optic fibre entry, protective housing, powder feeder axle body, powder entry, protection gas entry and laser head from last to down, and the during operation, laser pass through the optic fibre entry and get into coaxial powder feeder, and the protective housing is used for the protection and fixes powder feeder axle body, and powder entry and protection gas entry are prosthetic materials and protection gas respectively and get into the entry of powder feeder, and the gas-powder mixture assembles with the laser that comes in from the optic fibre entry, and it gets into to treat the repair area to come out from the laser head.

6. The intelligent steel rail profile repairing vehicle of claim 5, wherein: the protective housing is the cuboid structure, powder entry and protection gas entry evenly encircle the setting respectively and are in on the circumference of powder feeder axle body.

7. The intelligent steel rail profile repairing vehicle of claim 5, wherein: the laser head is of a conical structure.

Technical Field

The invention relates to the field of steel rail repairing devices, in particular to an intelligent repairing vehicle for a steel rail profile.

Background

Along with the rapid development of high-speed rail transit in China, the surface damage of the steel rail is increasingly serious due to large axial degree, high density and high speed, the damage of the rail gradually enters a peak period in the coming years, and the research on the rail service life prolonging technology is a key task to be faced by railway transportation in China, so that the important effects of guaranteeing the safe and reliable operation of the railway and saving the transportation cost are achieved. Aiming at the technical requirements and application conditions of the existing track repair, because the mileage of the existing railway in China is very long, the intelligent online repair of the railway outside is imperative in order to reduce the maintenance cost. With the development of science and technology, laser detection technology and laser cladding technology have become more mature, and when the laser detection technology and the laser cladding technology are applied to track repair, the manual repair cost can be greatly reduced, intermediate links are reduced, and meanwhile, defect types can be analyzed through scanning images, and intelligent repair is carried out. However, in order to well fit various different types of rail damage repair, an intelligent rail surface damage repair trolley needs to be designed. The problems of the existing repair detection mainly include the following points:

firstly, how to detect the damaged surface of the track, then how to remove an oxide layer on the surface of the track to be repaired and sundries on the surface of the damaged track, and finally, how to carry out heat preservation when carrying out a laser repair process outdoors. In addition, laser repair also has many problems such as low repair accuracy and low efficiency.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides the intelligent steel rail profile repairing vehicle which can better preprocess a rail and repair the rail by laser, and improve the repairing efficiency and the repairing quality. The mechanical arm of the laser repairing device has multiple degrees of freedom and can meet the action requirement during laser repairing, and meanwhile, the coaxial powder feeder is arranged on the mechanical arm, so that the defect of unidirectional lateral powder feeding is overcome, the molding quality is greatly improved, and the dilution rate is reduced.

The intelligent steel rail profile repairing vehicle comprises a vehicle body, a workbench, a display, a rail surface damage detection device, a rail surface pretreatment device, a laser repairing device and a rolling forming device, wherein wheels are arranged at the bottom of the vehicle body, the rail surface damage detection device, the rail surface pretreatment device, the laser repairing device and the rolling forming device are sequentially arranged on the vehicle body, the rail surface damage detection device is used for detecting the damaged rail surface, the rail surface pretreatment device is used for performing surface pretreatment on a rail to be repaired, the laser repairing device is used for repairing the rail to be repaired in a laser cladding mode, and the rolling forming device is used for monitoring the repairing state and putting the rail surface into a rolling forming mode after laser cladding;

the vehicle body comprises a vehicle cover, a first side vehicle baffle, a vehicle chassis, a second side vehicle baffle, a heat-insulating cover, front wheels and rear wheels, wherein the front wheels and the rear wheels are connected with the bottom surface of the vehicle chassis and then are respectively placed on two steel rails to be repaired; the workbench and the display are fixedly connected with the chassis through a third connecting plate;

the surface pretreatment device comprises a laser scanner, an air compressor, an air inlet pipe, a fourth connecting plate, an air pressure lifting device, an air outlet, a driving motor, a transmission shaft and a track grinding wheel, wherein the air pressure lifting device is connected with the chassis by means of the fourth connecting plate, the driving motor is connected with the track grinding wheel through the transmission shaft, the laser scanner is used for scanning the track, and when the laser scanner scans the track and is damaged, the air compressor starts to work and gas is introduced through the air inlet pipe to enable the air pressure lifting device to move downwards so that the track grinding wheel is in full contact with the track to be repaired; the motor starts to operate to enable the transmission shaft to drive the track grinding wheel to start to rotate, and surface pretreatment is carried out on the track to be repaired;

the laser repairing device comprises a chassis motor, a connecting plate, a rotating chassis, a first motor, a first mechanical arm joint, a second motor, a mechanical arm connecting shaft, a second mechanical arm joint, a third motor, a powder box, a laser box, a protective gas storage tank, an optical fiber, a protective gas conveying pipe, a powder conveying pipe and a coaxial powder feeder, wherein the first mechanical arm joint, the mechanical arm connecting shaft and the second mechanical arm joint are arranged on the rotating chassis;

the chassis motor is arranged on the chassis, a fifth connecting plate is arranged above the chassis motor, a rotating chassis is arranged on the fifth connecting plate, a first end of a first joint of the mechanical arm and the first motor are arranged on the rotating chassis, a second end of the first joint of the mechanical arm is connected with a first end of a second joint of the mechanical arm, a second end of the second joint of the mechanical arm is connected with the coaxial powder feeder, the second motor is fixed on the first joint of the mechanical arm, the third motor is fixed on the second joint of the mechanical arm, the coaxial powder feeder is connected with an optical fiber, a protective gas conveying pipe and a powder feeding pipe, the other ends of the optical fiber, the protective gas conveying pipe and the powder feeding pipe are respectively connected with the powder box, the laser box and a protective gas storage tank, and the powder box, the laser box and the protective gas storage tank are respectively fixed on the chassis, the laser box conveys laser to the coaxial powder feeder through an optical fiber, the powder box is connected with the coaxial powder feeder through a powder conveying pipe to achieve the purpose of conveying track repairing materials, and protective gas in the laser repairing process enters the coaxial powder feeder from a protective gas conveying pipe through a protective gas storage tank;

when a damaged track is detected, the chassis motor, the first motor and the second motor are started to enable the coaxial powder feeder to reach the surface of the track to be repaired, then the laser box starts to convey laser, meanwhile, the powder box and the protective storage tank respectively start to convey repairing materials and protective gas to enter the coaxial powder feeder to start laser repair, and then the third motor is started to enable the axial powder feeder to transversely translate, so that adjustability of a laser cladding working area is achieved, and repair work of the surface of the track is completed.

Preferably, the protection cover can cover the outside of coaxial powder feeder, the protection cover includes cover body and apron, the apron is the deformable high temperature resistant rubber who takes the crackle.

Preferably, the track grinding wheel comprises a grinding wheel protection cover, a track special grinding wheel, a rolling bearing and a connecting piece, the grinding wheel protection cover is connected with the air pressure lifting device, the grinding wheel protection cover is connected with the transmission shaft through the connecting piece, and the track special grinding wheel rotates under the transmission of the rolling bearing, so that impurities on the surface of the track to be repaired are removed.

Preferably, the shape of the special track grinding wheel is matched with the upper side face of the track.

Preferably, coaxial powder feeder has set gradually optic fibre entry, protective housing, powder feeder shaft body, powder entry, shielding gas entry and laser head from last to down, and during operation, laser gets into coaxial powder feeder through the optic fibre entry, and the protective housing is used for the protection and fixes powder feeder shaft body, and powder entry and shielding gas entry are repair material and shielding gas respectively and get into the entry of powder feeder, and the gas-powder mixture assembles with the laser that comes in from the optic fibre entry, and it gets into the region of waiting to repair to come out from the laser head.

Preferably, the protective housing is a cuboid structure, and the powder inlet and the protective gas inlet are respectively and uniformly arranged on the circumference of the powder feeder shaft body in a surrounding manner.

Preferably, the laser head is of a conical structure.

Compared with the prior art, the invention has the following beneficial effects:

(1) because the shape of the upper surface of the rail is an arch and not a plane, the damage of the rail is scratched, the corrugation generally appears on the side surface of the arch surface of the rail, the traditional laser repair device can not meet the degree of freedom required by the surface repair of the rail, the mechanical arm provided by the invention has a plurality of degrees of freedom and can meet the action requirement during the laser repair, the coaxial powder feeder is arranged on the mechanical arm, the defect of unidirectional lateral powder feeding is overcome, the molding quality is greatly improved, and the dilution rate is reduced.

(2) The laser of the laser repairing device enters the coaxial powder feeder through the optical fiber inlet, the protective shell plays a role in protecting and fixing the shaft body of the powder feeder, the powder inlet and the protector inlet are used as repairing materials and protective gas to enter the powder feeder, the gas-powder mixture is converged with the laser entering from the optical fiber inlet and enters a region to be repaired from the laser head, so that the laser, the protective gas and the repairing powder are better adapted to the change of the scanning direction on the same axis, and the repairing and forming quality is greatly improved.

(3) The track grinding wheel is designed into a shape matched with the upper surface of a track to be repaired, so that an oxide layer on the surface of the track and impurities on the surface of the track can be removed, the purpose of preprocessing the surface of the track is achieved, an air pressure lift is further used in the device and is connected with a vehicle body chassis through a connecting plate, an air compressor is also installed on the vehicle body chassis, a hole is formed in the vehicle body chassis, so that an air pipe is connected with the air pressure lift, when a laser scanner detects that the track is damaged, the air compressor starts to work, the air pressure lift is pressed downwards, the track grinding wheel and the track to be repaired can be fully contacted, and the phenomenon that the grinding wheel jumps due to the fact that the track is contacted with an irregular damaged surface is avoided.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded schematic view of the vehicle body of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2 according to the present invention;

FIG. 4 is an enlarged view of portion B of FIG. 3 according to the present invention;

FIG. 5 is a schematic structural view of the surface preparation apparatus of the present invention;

FIG. 6 is a schematic perspective view of the orbital grinding wheel of the present invention;

FIG. 7 is a schematic structural diagram of a laser repair apparatus according to the present invention;

FIG. 8 is a schematic view of a coaxial powder feeder of the present invention;

fig. 9 is a schematic three-dimensional structure of the present invention.

Detailed Description

Exemplary embodiments, features and aspects of the present invention will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

As shown in fig. 1 and 9, the repairing rail car provided with the laser repairing device of the present invention is composed of a car body assembly, a rail 100 to be repaired, a rail surface damage detecting and preprocessing device 200, a rail damage laser repairing device 300, and a roll forming and rail feeding device 400.

The vehicle body assembly and the track 100 to be repaired are used for providing a basic frame for track repair and are used as carriers for completing track repair work; meanwhile, a heat preservation environment is provided for the surface of the rail after laser cladding, so that rolling forming is fully carried out.

The rail surface damage detecting and rail surface preprocessing device 200 is used for detecting a damaged rail surface and then performing surface preprocessing of a rail to be repaired.

The rail damage laser repairing device 300 is used for repairing damaged rail surfaces in a laser cladding mode.

The roll forming and rail feeding device 400 can allow the roll wheel to be fed to the surface to be rolled, so that the surface of the rail after laser cladding is roll formed.

On the other hand, the built-in scanner of the roll forming and rail feeding apparatus 400 can determine the time when the operation of the carriage and the preprocessing unit is stopped and determine whether the track repairing operation is completed. And when the scanner scans and confirms that the repairing process is finished, rolling and forming the repaired track. The roll forming and guide feeding apparatus 400 is provided with a press roller to perform roll forming.

The main solution to this patent is the surface treatment problem and the laser repair problem, which will be described with emphasis on the two parts.

As shown in fig. 2 to 4, the automobile body includes bonnet 1, first side car baffle 2, the chassis 3, second side car baffle 6, the heat preservation cover, front wheel 11 and rear wheel 12, place respectively on two rail of treating to restore after front wheel 11 and rear wheel 12 are connected with the bottom surface of chassis 3, first side car baffle 2 and second side car baffle 6 are fixed respectively in the both sides of chassis 3, bonnet 1 is fixed on chassis 3, the heat preservation cover is connected with chassis 3 through first connecting block, and it is fixed through second connecting plate and third connecting plate.

Front wheels 11 and rear wheels 12 of the rail trolley are arranged on the left steel rail 5 to be repaired and the right steel rail 4 to be repaired; the front wheels 11 and the rear wheels 12 are connected with the chassis 3 through bolts; the first side car baffle 2 and the second side car baffle 6 are welded on two sides of the car chassis 3; the vehicle cover 1 is also connected with the chassis of the trolley through welding in a mode shown in figure 2. The workbench and the display 10 are connected with the chassis 3 through bolts through a trolley chassis and a workbench connecting plate 13 (namely a third connecting plate). The heat preservation cover 10 is connected with the chassis 3 through a connecting block 14 and then fixed with a heat preservation cover fixing connecting plate 15 (namely a first connecting plate) and a heat preservation cover connecting plate 16 (namely a second connecting plate) through the chassis of the trolley. After the trolley starts to run, the image scanned by the laser scanner is displayed on the display screen, the damage type of the surface of the track can be clearly seen, and the heat-preservation cover is connected with the trolley through the connecting plate and runs forwards.

As shown in fig. 5, the surface pretreatment device includes a laser scanner 7, an air compressor 21, an air inlet pipe 22, a fourth connecting plate 23, an air pressure lifting device 24, an air outlet 25, a driving motor 26, a transmission shaft 27 and a track grinding wheel 28, wherein the fourth connecting plate 23 connects the air pressure lifting device 24 with the chassis 3 in fig. 4; when the laser scanner 7 in fig. 3 scans that the track is damaged, the air compressor 21 starts to work and introduces air through the air inlet pipe 22 so that the air pressure lifting device 24 moves downwards to make the track grinding wheel 28 fully contact with the track to be repaired; the driving motor 26 is connected with the track grinding wheel 28 through the transmission shaft 27, and when the damage is scanned, the driving motor 26 starts to operate, so that the transmission shaft 27 drives the track grinding wheel 28 to start rotating, and the purpose of performing surface pretreatment on the track to be repaired is achieved.

As shown in fig. 6, the orbital grinding wheel 28 includes a grinding wheel protecting cover 281, a special orbital grinding wheel 282, a rolling bearing 283 and a connecting piece 284, wherein the grinding wheel protecting cover 281 is used for connecting with the pneumatic lifting device 24 in fig. 4, and the connecting piece 284 is used for connecting the transmission shaft 27 in fig. 5 with the grinding wheel protecting cover 281 to achieve the purpose of lifting; the rolling bearing 283 is used for driving the special track grinding wheel to rotate and remove impurities on the surface to be repaired, and the special track grinding wheel is designed into a shape matched with the upper side surface of the track so as to ensure that the grinding wheel is fully contacted with the track to be repaired and better carry out pretreatment work on the surface of the track.

As shown in fig. 7, the laser repair device includes a chassis motor, a fifth connecting plate, a rotating chassis, a first motor, a first joint of a mechanical arm, a second motor, a connecting shaft of the mechanical arm, a second joint of the mechanical arm, a third motor, a powder box, a laser box, a storage tank of shielding gas, an optical fiber, a conveying pipe of shielding gas, a powder feeding pipe, a coaxial powder feeder, a first joint of the mechanical arm, a connecting shaft of the mechanical arm, and a second joint of the mechanical arm.

The chassis motor 31 is fixed on a chassis and is connected with the rotating chassis 33 through a fifth connecting plate 32, the first joint 34 and the first motor 35 of the mechanical arm are connected to the rotating chassis through bolts, the joints at the two sides are connected through a mechanical connecting shaft 36, the second motor 37 and the second joint 38 of the mechanical arm are connected to the first joint 34 of the mechanical arm through bolts, and the third motor 39 is fixed on the second joint of the mechanical arm and is connected with the coaxial powder feeder 316; the powder tank 310, the laser tank 311 and the shielding gas storage tank 312 are fixed on the chassis of the trolley according to the positions in fig. 3; the laser box 311 supplies laser to the coaxial powder feeder 316 through the optical fiber 313, the powder box 310 is connected with the coaxial powder feeder 316 through the powder feeding pipe 315 so as to achieve the purpose of conveying track repairing materials, and protective gas in the laser repairing process enters the coaxial powder feeder 316 from the protective gas conveying pipe 314 through the protective gas storage tank 312. When a damaged track is detected, the chassis motor 31, the first motor 35 and the second motor 37 are started to enable the coaxial powder feeder 316 to reach the surface of the track to be repaired, then the laser box 311 starts to convey laser, meanwhile, the powder box 310 and the gas storage tank 312 respectively start to convey repair materials and protective gas to enter the coaxial powder feeder 316 to start a laser repair process, then the third motor 39 is started to enable the coaxial powder feeder to move left and right, adjustability of a laser cladding working area is achieved, and finally repair work on the surface of the track is completed.

As shown in fig. 8, laser enters the coaxial powder feeder through the optical fiber inlet 161, the protective shell 162 plays a role in protecting and fixing the shaft body 163 of the powder feeder, the powder inlet 164 and the protector inlet 165 serve as inlets for repair materials and protective gas to enter the powder feeder, a gas-powder mixture is converged with the laser entering from the optical fiber inlet 161, and the laser comes out from the laser head 166 and enters an area to be repaired, so that the laser, the protective gas and the repair powder better adapt to the change of the scanning direction on the same axis, and the quality of repair molding is greatly improved.

In one embodiment of the present invention, the protective casing 162 has a rectangular parallelepiped structure, and the powder inlet and the shielding gas inlet are respectively and uniformly arranged around the circumference of the shaft body of the powder feeder.

In one embodiment of the invention, laser head 166 is of a conical configuration.

The overall working principle of the repair trolley of the invention is further explained below:

when the device works, firstly, the damaged surface of the rail is detected by rail surface damage detection, and then the rail surface pretreatment device carries out surface pretreatment on the rail to be repaired. The track grinding wheel of the surface pretreatment device is designed into a shape which is matched with the upper surface of a track to be repaired, so that an oxide layer on the surface of the track and impurities on the surface of the track can be removed, the purpose of pretreating the surface of the track is achieved, an air pressure lift is further used in the device, the device is connected with a vehicle body chassis through a connecting plate, an air compressor is also installed on the vehicle body chassis, a hole is formed in the vehicle body chassis, an air pipe is connected with the air pressure lift, when a laser scanner detects that the track is damaged, the air compressor starts to work, the air pressure lift is pressed downwards, the track grinding wheel and the track to be repaired can be fully contacted, and the phenomenon that the grinding wheel jumps due to the fact that the track grinding wheel is contacted with an irregular damaged surface is avoided.

And secondly, repairing the damaged surface of the rail in a laser cladding mode after the rail damage laser repairing device.

During laser cladding, because the shape of the upper surface of the track is an arch and not a plane, the damage of the track is scratched, corrugation generally appears on the side surface of the arched surface of the track, the traditional laser repair device cannot meet the degree of freedom required by the surface repair of the track, the mechanical arm designed at this time has a plurality of degrees of freedom and can meet the action requirement during laser repair, a chassis motor is fixed on a chassis of a trolley and is connected with a rotating chassis through a connecting plate, a first joint of the mechanical arm and a first motor are connected onto the rotating chassis through bolts, the joints on two sides are connected through a mechanical connecting shaft, a second motor and a second joint of the mechanical arm are connected onto the first joint of the mechanical arm through bolts, and a third motor is fixed onto the second joint of the mechanical arm and is connected with a coaxial powder feeder; the powder box, the laser box and the protective gas storage tank are fixed on the chassis of the trolley; the laser box conveys laser to the coaxial powder feeder through an optical fiber pipeline, the powder box is connected with the coaxial powder feeder through a powder conveying pipe so as to achieve the purpose of conveying track repairing materials, and protective gas in the laser repairing process enters the coaxial powder feeder from a protective gas conveying pipe through a protective gas storage tank. When a damaged track is detected, the chassis motor, the first motor and the second motor are started to enable the coaxial powder feeder to reach the surface of the track to be repaired, then the laser box starts to convey laser, meanwhile, the powder box and the protective storage tank respectively start to convey repairing materials and protective gas to enter the same-circumference powder feeder to start the laser repairing process, then the third motor is started to enable the coaxial powder feeder to move left and right, adjustability of a laser cladding working area is achieved, repairing work on the surface of the track is finally completed, and the coaxial powder feeder is installed on a mechanical arm.

And finally, driving a rolling forming device to feed a rolling wheel to the surface needing rolling, and rolling and forming the surface of the rail after laser cladding.

Meanwhile, a scanner arranged in the rolling forming device IV monitors the working state of laser cladding, determines the time for stopping the operation of the trolley and the preprocessing device and determines whether the track repairing operation is finished.

Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.