Steel rail grinding wagon and steel rail grinding operation method

Abstract

The invention discloses a steel rail grinding wagon and a steel rail grinding operation method.The steel rail grinding wagon comprises a highway-railway dual-purpose excavator, a grinding device and a traction rod, and the highway-railway dual-purpose excavator comprises an excavator body, an excavating arm and an arm butt joint. The excavating arm is installed on the excavator body, and the arm butt joint is installed at the front end of the excavating arm. The polishing device can be in butt joint with the arm butt joint head, and the polishing device is lifted by the highway-railway dual-purpose excavator to achieve automatic up-and-down. One end of the traction rod is connected with the grinding device, the other end of the traction rod is connected with the excavator body, and the highway-railway excavator provides power for walking of the grinding device. The technical problems that existing steel rail polishing equipment is low in operation efficiency, needs manual operation cooperation and is high in labor intensity can be solved.

Description

Technical Field

[0001] This application relates to the technical field of railway engineering machinery, and particularly to an automatic light rail grinding vehicle and a rail grinding operation method applied to rail grinding operations. Background Art

[0002] With the rapid development of domestic railway transportation, the mileage of railway operation has achieved rapid growth. At the same time, with the increasingly widespread use of heavy-haul railways, the occurrence cycle of rail diseases is gradually shortening. The increase in mileage and the shortening of the disease cycle have led to a sharp increase in the workload of rail maintenance. Rail grinding is an important method for railway line maintenance and repair, which can effectively eliminate and inhibit rail surface damage, extend the service life of rails, and reduce the rail replacement cycle. Rail grinding repairs rail diseases and restores the rail profile to the best profile to achieve the best wheel-rail relationship, thereby extending the rail life and ensuring the safety and comfort of vehicle passage. The grinding device is the actuator of the rail grinding operation and a key component of the rail grinding train, playing an important role on the grinding train. At the same time, the quality, efficiency, and coverage of the rail grinding angle of the rail grinding operation are all reflected by the grinding device. Due to the high usage cost and great limitations in usage time of large rail grinding vehicles, the demand for light rail grinding equipment with flexible usage time and low cost is gradually increasing. However, current small rail grinding equipment generally has problems such as heavy self-weight, the need for multiple people to carry it on and off the track, and the need for manual power supply for movement, resulting in a relatively large physical labor intensity for operators.

[0003] In the prior art, the following documents are mainly related to this application:

[0004] Document 1 is a Chinese utility model patent with the application number on December 10, 2020, and the publication number of CN215482003U on January 11, 2022, applied by Beijing Jiaotong University. This utility model relates to a rail grinding vehicle with a combined railway and road sanding belt type, including a vehicle frame and a track conversion system, a rail grinding system, a carriage, a cab, a front wheel pair, and a rear drive wheel pair connected to the vehicle frame; the track conversion system is located in front of the grinding vehicle and includes a connection base, a support chassis, and a docking bushing. The rail grinding system is located within the space defined by the carriage and includes a grinding trolley frame, a frame lifting cylinder, a grinding trolley traction mechanism, a positioning wheel system, a locking device, and a sanding belt grinding unit located within the grinding trolley frame. The frame lifting cylinder drives the grinding trolley frame and its connected sub-modules to lift along the cylinder body direction, and the locking cylinder and the load-bearing plate are driven to displace relative to each other by air pressure. This rail grinding vehicle with a combined railway and road sanding belt type can flexibly switch the running mode, reduce the self-running time of the grinding vehicle, and increase the available time during the skylight period. However, this grinding vehicle is designed for tram lines and cannot be applied to national railway lines, cannot automatically go on and off the track, and the sanding belt type grinding device has low grinding efficiency and relatively cumbersome sanding belt replacement.

[0005] Document 2 is a Chinese utility model patent applied for by Shandong Huasheng Zhongtian Engineering Machinery Co., Ltd. and Xinchang Maintenance Section of China Railway Shanghai Bureau Group Co., Ltd. on March 9, 2022, and announced on January 23, 2023, with the announcement number CN218404877U. This utility model discloses a steel rail turnout grinding machine, which includes a frame that travels along the rail through a profiling wheel. A driving unit driven by a power supply unit and a control box is installed on the frame. The output end of the driving unit drives a grinding head, and the driving unit is located on a lifting assembly. The lifting assembly is connected to a translation assembly in the frame through a rotating assembly. The translation assembly is located in the frame and moves relative to the frame. This utility model can improve the service performance and environmental protection performance of the steel rail turnout grinding machine and reduce the damage to the rail during the grinding process.

[0006] Document 3 is a Chinese invention application applied for by Beijing Jiaotong University on December 26, 2023, and published on March 26, 2024, with the publication number CN117758554A. This invention application discloses a portable rail abrasive belt grinding machine, which includes: an abrasive belt grinding wheel train mechanism that can perform grinding operations on the rail to be ground; and a movable part that can drive the abrasive belt grinding wheel train mechanism to move. Among them, the movable part includes: a moving vehicle frame that can move along a first direction parallel to the rail to be ground; a transverse movement and deflection mechanism that can move along a second direction perpendicular to the first direction and deflect at an angle in the horizontal plane; a lifting mechanism that can move up and down in the vertical direction. With such a structure, it is possible to ensure that the abrasive belt grinding wheel train mechanism reliably grinds the rail to be ground through the movable part. Moreover, due to the optimization of the movement mechanism of the rail abrasive belt grinding machine of this invention, the structure is more compact, thus realizing the light weight of the whole machine to a certain extent.

[0007] The two rail grinding machines disclosed in Document 2 and Document 3 are both miniaturized rail grinding equipment to meet the flexible operation needs of rail grinding. However, both of the above two devices are only equipped with 1 grinding head, and can only grind one side of the rail at a time, resulting in low grinding efficiency. At the same time, during the use process, both need to be manually pushed, and multiple people are required to carry them up and down the track together. Moreover, the deflection angle of the grinding device needs to be manually adjusted, resulting in a large manual labor intensity, and the operation of the grinding device is cumbersome, the protection level is low, and the working noise and grinding dust affect the physical health of the operators. Summary of the Invention

[0008] In view of this, the purpose of this application is to provide a rail grinding vehicle and a rail grinding operation method to solve the technical problems of low operation efficiency of existing rail grinding equipment, the need for manual operation and cooperation, and relatively large labor intensity.

[0009] To achieve the above-mentioned invention object, the present application specifically provides a technical implementation solution for a rail grinding vehicle, including: a rail-road dual-purpose excavator, a grinding device and a towing bar. The rail-road dual-purpose excavator includes an excavator main body, an excavating arm and an arm docking head. The excavating arm is installed on the excavator main body, and the arm docking head is installed at the front end of the excavating arm. The grinding device can be docked with the arm docking head, and the grinding device is lifted by the rail-road dual-purpose excavator to realize autonomous getting on and off the track. One end of the towing bar is connected to the grinding device, and the other end is connected to the excavator main body. The rail-road dual-purpose excavator provides power for the running of the grinding device.

[0010] Further, a device docking head is provided on the top of the vehicle frame.

[0011] Further, a movable hook and a fixed hook are installed on the arm docking head. The movable hook can be rotated and locked, and the grinding device can be docked with the movable hook and the fixed hook through the device docking head.

[0012] Further, the grinding device includes: a vehicle frame, and a rail grinding unit installed on the vehicle frame. One end of the towing bar is connected to the vehicle frame, and the other end is connected to the installation beam of the excavator main body.

[0013] Further, the rail grinding unit includes: a grinding unit, a unit frame, a guide rail slider mechanism, a deflection drive mechanism, a lifting drive mechanism and a cradle. The grinding unit includes a grinding motor and a grinding head connected to the output shaft of the grinding motor. The unit frame is movably connected to the vehicle frame through the guide rail slider mechanism, and the unit frame can perform a transverse movement relative to the vehicle frame. The grinding motor is movably installed inside the cradle. The lifting drive mechanism is installed between the cradle and the grinding motor, and the grinding motor can be driven by the lifting drive mechanism to perform a lifting movement relative to the cradle. A rotating shaft seat is provided below the cradle, and the cradle is installed at the rotating shaft below the unit frame through the rotating shaft seat. The deflection drive mechanism is installed between the unit frame and the cradle, and the telescoping of the deflection drive mechanism can drive the cradle to rotate around the rotating shaft to realize the deflection action of the grinding head.

[0014] Further, the grinding device includes two unit frames symmetrically arranged on the left and right. Each unit frame is longitudinally provided with three grinding units. One of the grinding units is a disc-type grinding unit, and the other two grinding units are cup-type grinding units.

[0015] Further, the grinding head of the cup-type grinding unit is a cup-type grinding head, and the cup-type grinding head is used for grinding the main line. The grinding head of the disc-type grinding unit is a disc-type grinding head, and the disc-type grinding head is used for grinding the turnout line.

[0016] Further, the tail end of the deflection drive mechanism is mounted on the cross beam at the upper part of the unit frame through the upper seat of the deflection drive mechanism.

[0017] Further, the telescopic rod end of the deflection drive mechanism is mounted on the lower part of the cradle through the lower seat of the deflection drive mechanism.

[0018] Further, the tail end of the lifting drive mechanism is mounted on the cradle through the upper seat of the lifting drive mechanism.

[0019] Further, the telescopic rod end of the lifting drive mechanism is mounted on the grinding motor through the lower seat of the lifting drive mechanism.

[0020] Further, the grinding motor adopts a hydraulic motor.

[0021] Further, a slide rail is arranged inside the cradle, and the grinding motor is movably connected with the cradle through the slide rail. The lifting drive mechanism can drive the grinding motor to move up and down along the slide rail to realize the lifting action of the grinding head.

[0022] Further, the guide rail slider mechanism includes a guide rail and a slider movably mounted on the guide rail. The guide rail is mounted on the unit frame, and the slider is mounted on the vehicle frame.

[0023] Further, the rail grinding unit further includes a transverse movement drive mechanism. The transverse movement drive mechanism is mounted between the vehicle frame and the unit frame. The telescopic movement of the transverse movement drive mechanism can drive the unit frame to move transversely along the guide rail to realize the transverse movement action of the grinding head.

[0024] Further, traveling wheels and rail resting devices are installed under the four corners of the vehicle frame, and the rail resting devices are located inside the traveling wheels.

[0025] Further, a lifting drive mechanism is also installed on the grinding device. The tail end of the lifting drive mechanism is mounted on the vehicle frame, and the telescopic rod end is mounted on the rail resting device. The rail resting device can be lifted and lowered as required.

[0026] Further, fire baffle plates are installed on both the left and right sides of the vehicle frame, and the extending distance and installation height of the fire baffle plates can both be adjusted.

[0027] Further, a control box is installed at the rear of the vehicle frame, and a vehicle-mounted radio, an Ethernet switch and a vehicle-mounted main control module are arranged inside the control box.

[0028] Further, traction mounting seats are arranged at both the front and rear ends of the vehicle frame. The grinding device is towed by connecting the traction mounting seats with the mounting beam of the excavator main body through a traction rod, and two grinding devices are reconnected by connecting the traction mounting seats of the two grinding devices through a traction rod.

[0029] The present application also specifically provides a technical implementation solution for a rail grinding operation method based on the above-mentioned rail grinding vehicle, including the following steps:

[0030] S1) The rail-road dual-purpose excavator enters the track, and the rail-road dual-purpose excavator hoists the grinding device onto the track through the excavating arm;

[0031] S2) Connect the excavator main body and the grinding device through a towing bar, and dock and install the power supply and oil supply of the grinding device with the excavating arm through quick-release joints. The rail-road dual-purpose excavator provides hydraulic oil and power supply for the grinding device;

[0032] S3) After the grinding device is powered on, the construction personnel set the grinding mode through a portable control terminal, and then remotely start the grinding motor of the grinding device;

[0033] S4) After the grinding motor is started, the excavator main body pushes the grinding device to move forward, and at a suitable position, control the grinding head of the grinding motor to lower, and start the grinding operation;

[0034] S5) After completing a single pass of grinding, lift the grinding head, and then control the grinding device to reciprocate for grinding until the current construction task is completed.

[0035] By implementing the technical solutions of the rail grinding vehicle and the rail grinding operation method provided by the present application, the following beneficial effects are obtained:

[0036] (1) For the rail grinding vehicle and the rail grinding operation method of the present application, the grinding device can be docked with the excavator, and the excavating arm is used as the hoisting equipment. The grinding device can be freely hoisted onto and off the track by the excavating arm, reducing the time for the grinding device to get on and off the track. At the same time, the excavator is used as the towing device, further reducing the labor intensity of the operators;

[0037] (2) For the rail grinding vehicle and the rail grinding operation method of the present application, a single-side grinding unit integrates 3 grinding heads, and the grinding device can integrate 2 grinding units at the same time. The two sides of the rail can be ground simultaneously, greatly improving the grinding efficiency. Combined with the remote control system for rail grinding, the operation of the grinding device can be simplified, and the operators can stay away from the danger sources;

[0038] (3) For the rail grinding vehicle and the rail grinding operation method of the present application, the structure design of the grinding unit is concise. The excavator is used as the power source, and the lifting action and the deflection action are both driven by hydraulic mechanisms, reducing the labor intensity of the workers and improving the action adjustment efficiency;

[0039] (4) For the rail grinding vehicle and the rail grinding operation method of the present application, the grinding unit integrates cup-shaped grinding heads and disc-shaped grinding heads at the same time. The grinding unit can slide horizontally, and is capable of grinding the main line and the turnout at the same time. Moreover, the excavator is used as the power source for traveling, greatly increasing the traveling speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other embodiments can be obtained based on these drawings without creative efforts.

[0041] Figure 1 It is a schematic structural diagram of a specific embodiment of the rail grinding vehicle of the present application;

[0042] Figure 2 It is a three-dimensional structural diagram of a specific embodiment of the rail grinding vehicle of the present application;

[0043] Figure 3 It is a schematic structural diagram of the arm docking head in a specific embodiment of the rail grinding vehicle of the present application;

[0044] Figure 4 It is a three-dimensional structural diagram of the grinding device in a specific embodiment of the rail grinding vehicle of the present application;

[0045] Figure 5 It is a side view of the internal structure of the grinding device in a specific embodiment of the rail grinding vehicle of the present application;

[0046] Figure 6 It is a side view of the structure of the grinding device (excluding the grinding unit) in a specific embodiment of the rail grinding vehicle of the present application;

[0047] Figure 7 It is a three-dimensional structural diagram of the vehicle frame in a specific embodiment of the rail grinding vehicle of the present application;

[0048] Figure 8 It is a three-dimensional structural diagram of the unit frame in a specific embodiment of the rail grinding vehicle of the present application;

[0049] Figure 9 It is a schematic structural diagram of the rail grinding unit in a specific embodiment of the rail grinding vehicle of the present application;

[0050] Figure 10 It is a side view of the schematic structure of the rail grinding unit in a specific embodiment of the rail grinding vehicle of the present application;

[0051] Figure 11 It is a top view of the schematic structure of the rail grinding unit in a specific embodiment of the rail grinding vehicle of the present application;

[0052] Figure 12 It is a front view of the schematic structure of the rail grinding unit in a specific embodiment of the rail grinding vehicle of the present application;

[0053] Figure 13 It is a schematic perspective view of a cup - type grinding unit in a specific embodiment of the rail grinding vehicle of the present application;

[0054] Figure 14 It is a schematic side view of the structure of a cup - type grinding unit in a specific embodiment of the rail grinding vehicle of the present application;

[0055] Figure 15 It is a schematic front view of the structure of a cup - type grinding unit in a specific embodiment of the rail grinding vehicle of the present application;

[0056] Figure 16 It is a schematic top view of the structure of a cup - type grinding unit in a specific embodiment of the rail grinding vehicle of the present application;

[0057] Figure 17 It is a schematic perspective view of a dish - type grinding unit in a specific embodiment of the rail grinding vehicle of the present application;

[0058] Figure 18 It is a schematic side view of the structure of a dish - type grinding unit in a specific embodiment of the rail grinding vehicle of the present application;

[0059] Figure 19 It is a schematic front view of the structure of a dish - type grinding unit in a specific embodiment of the rail grinding vehicle of the present application;

[0060] Figure 20 It is a schematic top view of the structure of a dish - type grinding unit in a specific embodiment of the rail grinding vehicle of the present application;

[0061] Figure 21 It is a block diagram of the system structure of a specific embodiment of the remote control system for rail grinding applied to the rail grinding vehicle of the present application;

[0062] Figure 22 It is a schematic diagram of network signal transmission of a specific embodiment of the remote control system for rail grinding applied to the rail grinding vehicle of the present application;

[0063] In the figure: 1 - Excavator main body, 2 - Excavation arm, 3 - Arm docking head, 31 - Movable hook, 32 - Fixed hook, 4 - Grinding device, 41 - Device docking head, 42 - Frame, 43 - Traveling wheel, 44 - Rail-leaning device, 45 - Fire baffle, 46 - Control box, 47 - Unit frame, 48 - Cup-type grinding unit, 49 - Disc-type grinding unit, 410 - Lifting drive mechanism, 411 - Guide rail slider mechanism, 412 - Upper seat of deflection drive mechanism, 413 - Deflection drive mechanism, 414 - Upper seat of lifting drive mechanism, 415 - Lifting drive mechanism, 416 - Lower seat of lifting drive mechanism, 417 - Cup-type grinding head, 418 - Disc-type grinding head, 419 - Grinding motor, 420 - Cradle frame, 421 - Lower seat of deflection drive mechanism, 422 - Rotating shaft seat, 423 - Slide rail, 424 - Transverse movement drive mechanism, 425 - Rotating shaft, 426 - Cross beam, 427 - Towing mounting seat, 5 - Towing rod, 6 - Track, 10 - Chassis, 11 - Mounting beam, 12 - Traveling mode switching drive mechanism, 13 - Rail wheel, 100 - Rail grinding vehicle, 101 - Portable control terminal, 102 - Portable radio station, 103 - Vehicle-mounted radio station, 104 - Ethernet switch, 105 - Vehicle-mounted main control module, 106 - Network camera, 107 - Driver's cab, 108 - Execution drive module, 203 - Second vehicle-mounted radio station, 204 - Second Ethernet switch, 205 - Second vehicle-mounted main control module, 206 - Second network camera. Detailed implementation mode

[0064] For the sake of citation and clarity, the technical terms, abbreviations or acronyms used in the following text are recorded as follows:

[0065] MimoMesh: Short for Multiple Input Multiple Output Mesh, a multi-input multi-output wireless mesh network;

[0066] CAN: Short for Controller Area Network, a controller area network bus;

[0067] WIFI: Wireless Fidelity, a wireless local area network communication technology based on the IEEE 802.11 standard;

[0068] 5G: Short for 5th Generation Mobile Communication Technology, the fifth generation of mobile communication technology.

[0069] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts fall within the scope of protection of this application.

[0070] As shown in the attached Figure 1 to the attached Figure 22 figures, specific embodiments of the rail grinding vehicle and the rail grinding operation method of this application are given. The following further explains this application with reference to the accompanying drawings and specific embodiments.

[0071] Embodiment 1

[0072] As shown in the attached Figure 1 and the attached Figure 2 figures, an embodiment of a rail grinding vehicle 100 of this application specifically includes: a rail-road dual-purpose excavator, a grinding device 4, and a towing bar 5. The rail-road dual-purpose excavator further includes an excavator main body 1, an excavating arm 2, and an arm docking head 3. The excavating arm 2 is installed on the excavator main body 1, and the arm docking head 3 is installed at the front end of the excavating arm 2. The grinding device 4 can be docked with the arm docking head 3, and the grinding device 4 can be lifted by the rail-road dual-purpose excavator to achieve self-loading and unloading onto and off the track. One end of the towing bar 5 is connected to the grinding device 4, and the other end is connected to the excavator main body 1. The rail-road dual-purpose excavator provides power for the running of the grinding device 4. The grinding device 4 has the functions of self-loading and unloading onto and off the track and self-running, and the grinding head can automatically adjust the deflection angle, and can grind the main line and turnout area of the rail.

[0073] As shown in the attached Figure 3 figures, a movable hook 31 and a fixed hook 32 are installed on the arm docking head 3. The movable hook 31 can be rotated and locked, and the grinding device 4 can be docked with the movable hook 31 and the fixed hook 32 through the device docking head 41. As shown in the attached Figure 4 figures, a device docking head 41 is provided (welded) on the top of the vehicle frame 42. The grinding device 4 can be docked with the arm docking head 3 through the device docking head 41, and the entire grinding device 4 can be lifted by the rail-road dual-purpose excavator to achieve the function of self-loading and unloading onto and off the track. As shown in the attached Figure 4 to the attached Figure 8As shown in the figure, the grinding device 4 further includes: a vehicle frame 42, and a rail grinding unit mounted on the vehicle frame 42. One end of the towing bar 5 is connected to the vehicle frame 42, and the other end is connected to the mounting beam 11 of the excavator main body 1. One end of the mounting beam 11 is hinged to the chassis 10 of the excavator main body 1, and the other end is provided with a rail wheel 13. One end of the traveling mode switching drive mechanism 12 is hinged to the mounting beam 11, and the other end is hinged to the chassis 10. As a typical embodiment of the present application, the traveling mode switching drive mechanism 12 may specifically adopt an oil cylinder, and the lifting and lowering of the rail wheel 13 can be realized through the telescoping of the traveling mode switching drive mechanism 12, and further the switching between the road traveling mode and the railway traveling mode of the rail-road dual-purpose excavator can be realized.

[0074] As shown in the attached Figure 9 to the attached Figure 20 As shown in the figure, an embodiment of the rail grinding unit of the present application specifically includes: a grinding unit 40, a unit frame 47, a guide rail slider mechanism 411, a deflection drive mechanism 413, a lifting drive mechanism 415, and a cradle 420. The grinding unit 40 further includes a grinding motor 419 and a grinding head connected to the output shaft of the grinding motor 419. The unit frame 47 is movably connected to the vehicle frame 42 through the guide rail slider mechanism 411, and the unit frame 47 can perform a transverse movement relative to the vehicle frame 42. The grinding motor 419 is movably installed inside the cradle 420, and the lifting drive mechanism 415 is installed between the cradle 420 and the grinding motor 419. The grinding motor 419 can be driven to move up and down relative to the cradle 420 through the lifting drive mechanism 415. A rotating shaft seat 422 is provided below the cradle 420, and the cradle 420 is installed at the rotating shaft 425 below the unit frame 47 through the rotating shaft seat 422. The deflection drive mechanism 413 is installed between the unit frame 47 and the cradle 420. The telescoping of the deflection drive mechanism 413 can drive the cradle 11 to rotate around the rotating shaft 425, realizing the deflection action of the grinding head.

[0075] The grinding device 4 further includes two unit frames 47 arranged symmetrically on the left and right. Each unit frame 47 is longitudinally installed with three grinding units 40. One of the grinding units 40 is a disc type grinding unit, and the other two grinding units 40 are cup type grinding units.

[0076] The grinding head of the cup type grinding unit adopts a cup type grinding head 417, and the cup type grinding head 417 is used to realize the grinding of the main line. The grinding head of the disc type grinding unit adopts a disc type grinding head 418, and the disc type grinding head 418 is used to realize the grinding of the turnout line. The grinding actions, lifting and lowering actions, and deflection actions of the two grinding units are all hydraulically driven, and the hydraulic source comes from the rail-road dual-purpose excavator.

[0077] As a preferred specific embodiment of the present application, the lifting drive mechanism 415 further adopts a lifting oil cylinder, and the deflection drive mechanism 413 further adopts a deflection oil cylinder.

[0078] The tail end of the deflection drive mechanism 413 is installed at the position of the cross beam 426 on the upper part of the unit frame 47 through the upper seat 412 of the deflection drive mechanism, and the upper seat 412 of the deflection drive mechanism is connected by welding. The telescopic rod end of the deflection drive mechanism 413 is installed at the lower part of the cradle 420 through the lower seat 421 of the deflection drive mechanism.

[0079] The tail end of the lifting drive mechanism 415 is installed on the cradle 420 through the upper seat 414 of the lifting drive mechanism. The telescopic rod end of the lifting drive mechanism 415 is installed on the grinding motor 419 through the lower seat 416 of the lifting drive mechanism. As a preferred specific embodiment of the present application, the grinding motor 419 further adopts a hydraulic motor.

[0080] A slide rail 423 is arranged inside the cradle 420, and the grinding motor 419 is movably connected to the cradle 420 through the slide rail 423. The lifting drive mechanism 415 can drive the grinding motor 419 to move up and down along the slide rail 423 to realize the lifting action of the grinding head. The guide rail slider mechanism 411 further includes a guide rail and a slider movably installed on the guide rail. The guide rail is installed on the unit frame 47, and the slider is installed on the vehicle frame 42.

[0081] The rail grinding unit further includes a transverse movement drive mechanism 424. The transverse movement drive mechanism 424 is installed between the vehicle frame 42 and the unit frame 47. The telescopic movement of the transverse movement drive mechanism 424 can drive the unit frame 47 to move transversely along the guide rail to realize the transverse movement of the grinding head to adjust the position of the grinding head. As a preferred specific embodiment of the present application, the transverse movement drive mechanism 424 further adopts a transverse movement oil cylinder.

[0082] Traveling wheels 43 and rail-leaning devices 44 are installed under the four corners of the vehicle frame 42, and the rail-leaning devices 44 are located inside the traveling wheels 43. The grinding device 4 is further installed with a lifting drive mechanism 410. The tail end of the lifting drive mechanism 410 is installed on the vehicle frame 42, and the telescopic rod end is installed on the rail-leaning device 44. The rail-leaning device 44 can be lifted and lowered as needed.

[0083] Fire shields 45 are installed on both the left and right sides of the vehicle frame 42, and the protruding distance and installation height of the fire shields 45 can be flexibly adjusted. A control box 46 is installed at the rear of the vehicle frame 42, and a vehicle-mounted radio 103, an Ethernet switch 104 and a vehicle-mounted main control module 105 are arranged inside the control box 46.

[0084] Traction mounting seats 427 are arranged at both the front and rear ends of the vehicle frame 42. The grinding device 4 is towed by connecting the traction mounting seat 427 with the mounting beam 11 of the excavator main body 1 through the towing rod 5. The two grinding devices 4 are reconnected by connecting the traction mounting seats 427 of the two grinding devices 4 through the towing rod 5.

[0085] It should be noted that in the specific embodiments of the present application, the oil cylinder can also be replaced by an electric cylinder or a pneumatic cylinder.

[0086] The main body of this embodiment is a 6-grinding-head light rail automatic grinding vehicle, and its grinding heads adopt a hydraulic drive form. This grinding vehicle can realize long-distance control of the grinding operation through a highly reliable wireless transmission system, thereby greatly reducing the number of on-site construction personnel and reducing the harm of grinding dust and noise to construction personnel. At the same time, it improves the grinding operation efficiency and construction quality, effectively extends the service life of the rail, and extends the rail maintenance cycle.

[0087] Embodiment 2

[0088] A rail grinding operation method of the present application based on the rail grinding vehicle described in Embodiment 1 specifically includes the following steps:

[0089] S1) The rail-road dual-purpose excavator enters the track. The rail-road dual-purpose excavator hoists the grinding device 4 onto the track 6 through the excavating arm 2;

[0090] S2) Connect the excavator main body 1 and the grinding device 4 through the towing bar 5, and dock and install the power supply and oil supply of the grinding device 4 with the excavating arm 2 through quick-release joints. The rail-road dual-purpose excavator provides hydraulic oil and power supply for the grinding device 4;

[0091] S3) After the grinding device 4 is powered on, the construction personnel set the grinding mode through the portable control terminal 101, and the grinding control data or the main control setting data is sent to the vehicle-mounted main control module 105 to remotely start the grinding motor 419 of the grinding device 4;

[0092] S4) After the grinding motor 419 is started, the excavator main body 1 pushes the grinding device 4 to move forward. At a suitable position, control the grinding head of the grinding motor 419 to lower, and start the grinding operation. At the same time, the grinding state data is uploaded to the portable control terminal 101 for display;

[0093] S5) After completing a single pass of grinding, lift the grinding head, and then control the grinding device 4 to reciprocate for grinding until the current construction task is completed.

[0094] The rail grinding operation method described in this embodiment is based on remotely controlling a small rail grinding device, which is mainly applied to turnout grinding and on-line emergency repair grinding operations. After the rail grinding vehicle 100 is on the line, only one person is required to operate to complete the grinding construction.

[0095] Embodiment 3

[0096] As shown in the appendix Figure 21 and the appendix Figure 22As shown in the figure, an embodiment of a remote control system for rail grinding based on the rail grinding vehicle 100 described in Embodiment 1 mainly includes ground-end (or a driver's cab 107 provided on the rail grinding vehicle 100) equipment and vehicle-mounted equipment. The remote control system specifically includes: a portable control terminal 101 and a portable radio 102 provided in the driver's cab 107 of the rail grinding vehicle 100 or at the ground end (in this embodiment, it is specifically introduced with the ground end as an example), a vehicle-mounted radio 103, an Ethernet switch 104, a vehicle-mounted main control module 105, and a network camera 106 provided on the grinding device 4. The portable control terminal 101 sends grinding control data or main control setting data to the portable radio 102 in the form of wired Ethernet or WIFI. The portable radio 102 converts the sent data into electromagnetic waves of a fixed frequency in a transparent transmission form for sending. After receiving the wirelessly sent data, the vehicle-mounted radio 103 converts it into Ethernet data again and transmits it to the Ethernet switch 104, and the Ethernet switch 104 sends the grinding control data or main control setting data to the vehicle-mounted main control module 105. After performing logical operations on the data, the vehicle-mounted main control module 105 sends it to the execution drive module 108 through the CAN network to control the deflection, lateral movement, and downward pressing start actions of the grinding head. The video data of the grinding state captured by the network camera 106 is sent in the form of electromagnetic waves of a fixed frequency through the vehicle-mounted radio 103, and after the portable radio 102 receives the wirelessly sent data, it is transmitted to the portable control terminal 101 in the form of wired Ethernet or WIFI for monitoring.

[0097] The remote control system for rail grinding further includes a second vehicle-mounted radio 203, a second Ethernet switch 204, a second vehicle-mounted main control module 205, and a second network camera 206 provided on another rail grinding vehicle 100. The second vehicle-mounted main control module 205 is connected to the second Ethernet switch 204, and the second network camera 206 communicates with the second Ethernet switch 204 through the second vehicle-mounted radio 203. This rail grinding vehicle 100 is connected to the Ethernet switch 104 through the second Ethernet switch 204 to achieve coupling with another rail grinding vehicle 100. When the coupling mode is selected, the upper computer display interface of the portable control terminal 101 automatically displays the data of multiple rail grinding vehicles 100 according to the number of coupled vehicles. As shown in the appendix Figure 1 As shown, the coupling control can be achieved by connecting the Ethernet switch network cables between Vehicle No. 1 and Vehicle No. 2. The coupling control can realize multi-vehicle collaborative operation, greatly improving the construction efficiency. When more than three rail grinding vehicles 100 are coupled, the Ethernet switch 204 of the previous rail grinding vehicle 100 and the Ethernet switch 204 of the next rail grinding vehicle 100 are cascaded in sequence to achieve the coupling of multiple rail grinding vehicles 100.

[0098] The vehicle-mounted main control module 105 collects the grinding status data and sends it to the Ethernet switch 104. The Ethernet switch 104 transmits the grinding status data to the vehicle-mounted radio 103 through Ethernet communication. The vehicle-mounted radio 103 converts the grinding status data into wireless transmission data and sends it in the form of electromagnetic waves with a fixed frequency. After receiving the wireless transmission data, the portable radio 102 sends it to the portable control terminal 101 in the form of wired Ethernet or WIFI, and the grinding status information is displayed through the portable control terminal 101. As a preferred specific embodiment of the present application, both the portable radio 102 and the vehicle-mounted radio 103 adopt MimoMesh radios. MimoMesh is a long-distance, high-bandwidth, and high-reliability wireless transmission network. It can be flexibly networked, is not easily affected by obstacles, is not restricted by geographical location, and has stable and reliable transmission quality. This embodiment applies the remote wireless control system based on MimoMesh to the field of small rail grinding equipment, which can ensure the reliable and safe remote control of the rail grinding equipment through high-quality data transmission performance, completely solve the harm of grinding dust and noise to construction workers, and further reduce the labor intensity of construction workers and the construction safety risk. At the same time, because the rail grinding equipment is a track maintenance construction equipment with relatively high requirements for data transmission real-time performance, its grinding status and operation area status need to be monitored in real time. Otherwise, it is very easy to damage the rail and cause irreparable losses. Therefore, the remote control system puts forward higher requirements for transmission bandwidth and data delay time.

[0099] The portable control terminal 101 is equipped with a touch screen and integrates the upper computer control display interface. The upper computer control display interface integrates grinding operation controls including grinding head deflection, transverse movement, downward pressure, and start. When the corresponding control is clicked, the portable control terminal 101 sends the grinding data to the vehicle-mounted main control module 105. The data needs to go through multiple processes to be sent to the vehicle-mounted main control module 105. First, the portable control terminal 101 sends data such as grinding head movement control data or module setting parameters to the portable radio 102 in the form of wired Ethernet or WIFI. The portable radio 102 converts these data into fixed-frequency electromagnetic wave form and sends them out in a transparent transmission form. After receiving the wireless data, the vehicle-mounted radio 103 converts it back into Ethernet data and transmits it to the Ethernet switch 104. The Ethernet switch 104 is a non-network management type. It sends the grinding data to the vehicle-mounted main control module 105 again. The vehicle-mounted main control module 105 is compatible with Ethernet ports and CAN interfaces. After performing logical operations on the data, it sends the control data to the execution drive module 108 through the CAN network. While the data is sent to the lower layer for control, the vehicle status information also uploads the data to the display interface for display through the reverse same route. The display interface can select the single machine mode or the multiple unit coupling mode. When the single machine mode is selected, the display interface only displays the control information of one rail grinding vehicle. When the multiple unit coupling mode is selected, the display automatically shows the data of multiple rail grinding vehicles according to the number of coupled vehicles. The portable control terminal 101 integrates a WIFI module and an Ethernet interface and can be connected to the portable radio 102 in a wired or wireless manner. The portable control terminal 101 is powered by its own battery, and its working location is not restricted by power supply. Its battery life can ensure operation during a 4 - 5-hour construction skylight point. The touch screen can be operated in a touch form or by mouse click, and can quickly send down the grinding control data. The portable control terminal 101 is equipped with a high-performance processor.

[0100] The portable radio 102 is placed on the ground, and its function is to serve as a bridge node for polishing data communication between the ground and the working vehicle. The portable radio 102 is equipped with a WIFI module and an Ethernet interface, and is connected to the portable terminal 101 through wireless WIFI or wired Ethernet. The portable radio 102 is equipped with two high-frequency transmitting antennas, which transmit Ethernet transmission data through 1.4GHz high-frequency electromagnetic waves, and at the same time receive and convert the polishing status data sent by the vehicle-mounted radio 103 into Ethernet data and transmit it back to the portable terminal 101 for display. The 1.4GHz frequency band is a non-civilian ultra-high frequency band, which is staggered with the railway communication frequency band, which not only avoids interference from external signals, but also avoids interference with railway communication equipment. At the same time, the wireless transmission signal has a strong anti-interference ability, and its transmission channel can jump intelligently. When the transmission channel encounters strong interference, it can automatically jump to another channel with less interference to continue data transmission, ensuring the reliable and stable transmission of polishing data. The transmission power of each of the two transmitting antennas is 1W, and the total transmission and receiving power is 2W. At the same time, the MimoMesh technology is used to greatly improve the communication rate, which can achieve high-reliability transmission of 30M high-bandwidth data at a long distance of 2 to 3km. The data transmission delay is at the μs level, which ensures the real-time nature of data transmission. The portable radio 102 has its own intercom microphone. Through the intercom microphone and the voice microphone of the vehicle radio 10, voice communication between on-site maintenance personnel and remote control personnel is enhanced, reducing safety risks. The portable radio 102 has its own power supply battery, and its operation is not restricted by geographical location. A full battery can meet the radio's continuous operation of 4 to 5 hours. The superior performance of the wireless transmission portable radio further ensures the reliability and safety of remote control grinding operations.

[0101] The vehicle radio 103 is consistent with the portable radio 102 in hardware composition. Its function is to send the Ethernet data transmitted by the vehicle main control module 105 through 1.4GHz high-frequency electromagnetic waves, and at the same time convert the high-frequency electromagnetic wave signal sent by the portable radio 102 into Ethernet data and transmit it to the vehicle main control module 105. The vehicle radio 103 is connected to the Ethernet switch 104 through an Ethernet cable. The vehicle radio 103 has its own voice microphone, and voice communication can be carried out with the portable radio 102 through the intercom microphone. The vehicle radio 103 has its own power supply battery. Once the battery is fully charged, the radio can work continuously for 4 to 5 hours. The battery life can meet the operation time of at least one skylight polishing point.

[0102] The Ethernet switch 104 uses a 100M non-managed Ethernet switch. Like the MimoMesh radio, it performs real-time data transmission in a transparent transmission mode. The Ethernet switch 104 is integrated with multiple Ethernet interfaces and is connected to the vehicle main control module 105 and the vehicle-mounted radio 103 through Ethernet. The Ethernet switch 104 uploads the vehicle status data collected by the vehicle main control module 105 to the vehicle-mounted radio 103 for transmission, and at the same time, it distributes the grinding control data received by the vehicle-mounted radio 103 to the vehicle main control module 105. The video captured by the network camera 106 is transmitted through the vehicle-mounted radio 103. When the rail grinding vehicle 100 performs reconnection control, the Ethernet switches 104 of the front and rear vehicles are connected, and the data of the rear vehicle is transmitted to the front vehicle through the Ethernet switch 104 and sent together through the vehicle-mounted radio 103. The Ethernet switch 104 needs to be powered by the vehicle-mounted 24V power module.

[0103] The vehicle main control module 105 is the core of vehicle control, integrated with rich interfaces such as an Ethernet interface and a CAN interface. It is connected to the Ethernet switch 104 through the Ethernet interface to receive grinding control data or main control setting data, perform logical operation control, and upload grinding status data. The vehicle main control module 105 is connected to the execution drive module 108 through the CAN interface to achieve the distribution of logical operation control data, the reception of drive status information, and the reception of battery status information. The network camera 106 and the vehicle-mounted radio 103 are connected through a wired Ethernet form. The vehicle main control module 105 has rich IO interfaces, which can realize the drive control of various vehicle devices and the acquisition of status information. The vehicle main control module 105 not only realizes the logical operation of control data but also realizes the conversion between CAN communication data and Ethernet communication data.

[0104] This embodiment is based on a wireless network. In particular, the remote control system for the light rail grinding equipment of MimoMesh can meet the requirements of long-distance and high-bandwidth transmission. At the same time, it overcomes the disadvantages such as the fixed location of network deployment, has flexible and efficient networking, high-speed and reliable transmission, and can well meet the remote control requirements of railway small rail grinding equipment. The remote control system for rail grinding realizes multi-vehicle reconnection through an Ethernet switch, can achieve multi-vehicle collaborative operation, and further improves the rail grinding efficiency. This embodiment introduces a highly reliable remote wireless control method into the field of small grinding equipment, realizes intelligent control of small grinding equipment, better meets the on-site service requirements, and solves the industry pain points such as low efficiency in turnout grinding and line emergency repair and potential safety risks. At the same time, on the premise of ensuring safety and reliability, it improves the operation quality and efficiency, reduces the number of construction personnel, ensures construction safety, and reduces the harm of construction dust and noise to personnel. This embodiment uses a MimoMesh network based on high bandwidth and long distance for transmission services. In a tunnel environment of more than 2 kilometers, the transmission bandwidth can reach more than 30M, and both the bandwidth and the control distance can meet the control requirements. In the control main network of this embodiment, a non-managed Ethernet switch is set up, which can realize Ethernet reconnection between multiple vehicles, ensure reliable transmission of reconnection signals, achieve multi-vehicle collaborative operation, and improve the grinding construction efficiency.

[0105] The remote control system for rail grinding described in this embodiment separates equipment control, status monitoring, and traveling construction. It sends the ground-end control data to the vehicle-mounted end through remote data transmission to control the deflection, lateral movement, and downward pressure actions of the grinding head. The grinding data of the vehicle-mounted end is transmitted back to the ground-end for monitoring. At the same time, the vehicle-mounted camera also transmits the grinding status video back to the ground-end for status monitoring, so as to ensure the safety of the grinding operation. The remote control system for rail grinding described in this embodiment is an optimal technical solution for realizing remote wireless control of small grinding equipment in view of several factors such as high bandwidth, low latency, long distance, and high reliability required for the remote control of the grinding vehicle.

[0106] In the description of this application, it should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly set on the other element or indirectly set on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0107] It should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0108] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality of" and "several" is two or more, unless otherwise specifically defined.

[0109] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the implementation conditions of the present application. Therefore, they do not have a substantial technical meaning. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present application can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present application.

[0110] By implementing the technical solutions of the rail grinding vehicle and the rail grinding operation method described in the specific embodiments of the present application, the following technical effects can be achieved:

[0111] (1) For the rail grinding vehicle and the rail grinding operation method described in the specific embodiments of the present application, the grinding device can be docked with an excavator, and the excavating arm can be used as a lifting device. The grinding device can be lifted up and down freely by the excavating arm, reducing the time for the grinding device to get on and off the track. At the same time, using the excavator as a traction device further reduces the labor intensity of the operating personnel.

[0112] (2) For the rail grinding vehicle and the rail grinding operation method described in the specific embodiments of the present application, each single-side grinding unit integrates 3 grinding heads, and the grinding device can integrate 2 grinding units at the same time. The two-side rails can be ground simultaneously, greatly improving the grinding efficiency. Combined with the remote control system for rail grinding, the operation of the grinding device can be simplified, keeping the operating personnel away from dangerous sources.

[0113] (3) For the rail grinding vehicle and the rail grinding operation method described in the specific embodiments of the present application, with the excavator as the power source, the lifting action and the deflection action are both driven by a hydraulic mechanism, reducing the labor intensity of the workers and improving the efficiency of action adjustment.

[0114] (4) The rail grinding vehicle and the rail grinding operation method described in the specific embodiments of the present application integrate a cup grinding head and a disc grinding head in the grinding unit. The grinding unit can slide horizontally, and has the ability to grind main lines and turnouts at the same time. Moreover, an excavator is used as the driving power source for traveling, which greatly improves the traveling speed.

[0115] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0116] The above is only a preferred embodiment of the present application, and does not impose any form of limitation on the present application. Although the present application has been disclosed above with preferred embodiments, it is not intended to limit the present application. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present application, or modify it into an equivalent embodiment with equivalent changes, without departing from the spirit and technical solution of the present application. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments based on the technical essence of the present application without departing from the technical solution of the present application still fall within the scope of protection of the technical solution of the present application.

Claims

1. A rail grinding vehicle, characterized in that, Including: A railway and road dual-purpose excavator, a grinding device (4) and a towing bar (5). The railway and road dual-purpose excavator includes an excavator main body (1), an excavating arm (2) and an arm docking head (3); the excavating arm (2) is installed on the excavator main body (1), and the arm docking head (3) is installed at the front end of the excavating arm (2); the grinding device (4) can be docked with the arm docking head (3), and the grinding device (4) is lifted by the railway and road dual-purpose excavator to realize independent getting on and off the track; one end of the towing bar (5) is connected to the grinding device (4), and the other end is connected to the excavator main body (1), and the railway and road dual-purpose excavator provides power for the running of the grinding device (4).

2. The rail grinding vehicle according to claim 1, wherein: A device docking head (41) is provided at the top of the vehicle frame (42).

3. The rail grinding vehicle according to claim 2, characterized in that: A movable hook (31) and a fixed hook (32) are installed on the arm docking head (3). The movable hook (31) can be rotated and locked, and the grinding device (4) can be docked with the movable hook (31) and the fixed hook (32) through the device docking head (41).

4. The rail grinding vehicle according to any one of claims 1 to 3, characterized in that, The grinding device (4) includes: a vehicle frame (42) and a rail grinding unit installed on the vehicle frame (42); one end of the towing bar (5) is connected to the vehicle frame (42), and the other end is connected to the installation beam (11) of the excavator main body (1).

5. The rail grinding vehicle according to claim 4, characterized in that, The rail grinding unit includes: a grinding unit (40), a unit frame (47), a guide rail slider mechanism (411), a deflection driving mechanism (413), a lifting driving mechanism (415) and a cradle (420); the grinding unit (40) includes a grinding motor (419) and a grinding head connected to the output shaft of the grinding motor (419); the unit frame (47) is movably connected to the vehicle frame (42) through the guide rail slider mechanism (411), and the unit frame (47) can perform a transverse movement relative to the vehicle frame (42); the grinding motor (419) is movably installed inside the cradle (420), and the lifting driving mechanism (415) is installed between the cradle (420) and the grinding motor (419), and the grinding motor (419) can be driven to perform a lifting movement relative to the cradle (420) through the lifting driving mechanism (415); a rotating shaft seat (422) is provided below the cradle (420), and the cradle (420) is installed at the rotating shaft (425) below the unit frame (47) through the rotating shaft seat (422); the deflection driving mechanism (413) is installed between the unit frame (47) and the cradle (420), and the telescopic movement of the deflection driving mechanism (413) can drive the cradle (11) to rotate around the rotating shaft (425) to realize the deflection action of the grinding head.

6. The rail grinding vehicle according to claim 5, wherein: The grinding device (4) includes two unit frames (47) arranged symmetrically left and right. Each unit frame (47) is longitudinally provided with three grinding units (40). One of the grinding units (40) is a disc type grinding unit, and the other two grinding units (40) are cup type grinding units.

7. The rail grinding vehicle according to claim 6, characterized in that: The grinding head of the cup - type grinding unit uses a cup - type grinding head (417), and the cup - type grinding head (417) is used to realize the grinding of the main line; the grinding head of the disc - type grinding unit uses a disc - type grinding head (418), and the disc - type grinding head (418) is used to realize the grinding of the turnout line.

8. The rail grinding vehicle according to any one of claims 5 to 7, characterized in that: The tail end of the deflection drive mechanism (413) is installed at the position of the cross - beam (426) on the upper part of the unit frame (47) through the upper seat (412) of the deflection drive mechanism.

9. The rail grinding vehicle according to claim 8, characterized in that: The telescopic rod end of the deflection drive mechanism (413) is installed at the lower part of the cradle frame (420) through the lower seat (421) of the deflection drive mechanism.

10. The rail grinding vehicle according to claim 9, characterized in that: The tail end of the lifting drive mechanism (415) is installed on the cradle frame (420) through the upper seat (414) of the lifting drive mechanism.

11. The rail grinding vehicle according to claim 10, wherein: The telescopic rod end of the lifting drive mechanism (415) is installed on the grinding motor (419) through the lower seat (416) of the lifting drive mechanism.

12. The rail grinding vehicle according to claim 5, 6, 7, 9, 10 or 11, characterized in that: The grinding motor (419) uses a hydraulic motor.

13. The rail grinding vehicle according to claim 12, characterized in that: A slide rail (423) is arranged inside the cradle frame (420), and the grinding motor (419) is movably connected to the cradle frame (420) through the slide rail (423). The lifting drive mechanism (415) can drive the grinding motor (419) to move up and down along the slide rail (423) to realize the lifting action of the grinding head.

14. The rail grinding vehicle according to claim 13, characterized in that: The guide rail slider mechanism (411) includes a guide rail and a slider movably installed on the guide rail; the guide rail is installed on the unit frame (47), and the slider is installed on the vehicle frame (42).

15. The rail grinding vehicle according to claim 14, characterized in that: The rail grinding unit further includes a transverse movement drive mechanism (424). The transverse movement drive mechanism (424) is installed between the vehicle frame (42) and the unit frame (47). The telescopic movement of the transverse movement drive mechanism (424) can drive the unit frame (47) to move transversely along the guide rail to realize the transverse movement action of the grinding head.

16. The rail grinding vehicle according to claim 5, 6, 7, 9, 10, 11, 13, 14 or 15, characterized in that: Travel wheels (43) and rail - relying devices (44) are installed under the four corners of the vehicle frame (42), and the rail - relying devices (44) are located inside the travel wheels (43).

17. The rail grinding vehicle according to claim 16, wherein: The grinding device (4) is further installed with a lifting drive mechanism (410). The tail end of the lifting drive mechanism (410) is installed on the vehicle frame (42), and the telescopic rod end is installed on the rail - relying device (44). The rail - relying device (44) can be lifted and lowered as needed.

18. The rail grinding vehicle according to claim 5, 6, 7, 9, 10, 11, 13, 14, 15 or 17, characterized in that: Fire - blocking plates (45) are installed on both the left and right sides of the vehicle frame (42), and the extending distance and installation height of the fire - blocking plates (45) can both be adjusted.

19. The rail grinding vehicle according to claim 18, characterized in that: A control box (46) is installed at the rear of the vehicle frame (42). A vehicle - mounted radio (103), an Ethernet switch (104) and a vehicle - mounted main control module (105) are arranged inside the control box (46).

20. The rail grinding vehicle according to claim 5, 6, 7, 9, 10, 11, 13, 14, 15, 17 or 19, characterized in that: Traction mounting seats (427) are arranged at both the front and rear ends of the vehicle frame (42). The grinding device (4) is towed by connecting the traction mounting seat (427) and the mounting beam (11) of the excavator main body (1) through a traction rod (5). The two grinding devices (4) are re - coupled by connecting the traction mounting seats (427) of the two grinding devices (4) through a traction rod (5).

21. A rail grinding operation method for a rail grinding vehicle according to any one of claims 1 to 20, characterized in that, Including the following steps: S1) The railway and road dual-purpose excavator moves onto the road, and the railway and road dual-purpose excavator hoists the grinding device (4) onto the track (6) through the excavating arm (2); S2) Connect the excavator main body (1) and the grinding device (4) through the towing bar (5), and dock and install the power supply and oil supply of the grinding device (4) with the excavating arm (2) through quick-release joints, and the railway and road dual-purpose excavator provides hydraulic oil and power supply for the grinding device (4); S3) After the grinding device (4) is powered on, the construction personnel set the grinding mode through the portable control terminal (101), and then remotely start the grinding motor (419) of the grinding device (4); S4) After the grinding motor (419) is started, the excavator main body (1) pushes the grinding device (4) to move, and at an appropriate position, control the grinding head of the grinding motor (419) to lower, and start the grinding operation; S5) After completing a single pass of grinding, lift the grinding head, and then control the grinding device (4) to reciprocate for grinding until the current construction task is completed.

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