Steel rail polishing unit and steel rail polishing device

Abstract

The invention discloses a steel rail polishing unit and a steel rail polishing device, a unit frame is movably connected with a frame through a guide rail sliding block mechanism, and the unit frame can transversely move relative to the frame. The grinding motor is movably installed in the cradle frame, the lifting driving mechanism is installed between the cradle frame and the grinding motor, and the grinding motor can be driven by the lifting driving mechanism to ascend and descend relative to the cradle frame. A rotating shaft seat is arranged below the cradle frame, and the cradle frame is installed at the rotating shaft below the unit frame through the rotating shaft seat. The deflection driving mechanism is installed between the unit frame and the cradle frame, the cradle frame can be driven to rotate around the rotating shaft through stretching and retracting of the deflection driving mechanism, and deflection of the grinding head is achieved. The technical problems that an existing polishing device 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 a rail grinding unit and a grinding device applied to rail grinding operations. Background Art

[0002] With the rapid development of domestic railway transportation, the mileage of railway operations has increased rapidly. 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. It can effectively eliminate and suppress 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 optimal 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 for rail grinding operations and is 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 rail grinding angles in rail grinding operations are all reflected by the grinding device. The grinding wheels on the grinding unit directly act on the rail to achieve the grinding operation. The rationality of the grinding unit mechanism design, the accuracy of the movement, and the number of grinding heads are very important.

[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 February 8, 2023, and the publication number CN219793486U on October 3, 2023, applied by Beijing Jiaotong University. This utility model specifically relates to a compact belt-type rail grinding unit and a grinding device, including: a mounting frame installed on the grinding unit; a vertical movement mechanism installed on the mounting frame; a belt wheel mechanism installed on the vertical movement mechanism and driven by the vertical movement mechanism to perform vertical movement; a tensioning mechanism installed on the mounting frame and connected to the belt wheel mechanism to be able to tension the belt of the belt wheel mechanism; and a deflection movement mechanism installed on the mounting frame and connected to the grinding device to be able to drive the mounting frame to deflect. It maximally realizes the compactness of the grinding unit and saves space. The stress on the contact belt wheel is evenly dispersed to two hollow cylindrical guide rails through the contact wheel mounting plate, and the grinding unit has a compact structure and strong stability.

[0005] Document 2 is a Chinese utility model patent applied 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 of CN218404877U. This utility model discloses a steel rail switch 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 inside 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 performance and environmental protection performance of the steel rail switch grinding machine and reduce the damage to the rail during the grinding process.

[0006] Document 3 is a Chinese invention application applied by Beijing Jiaotong University on December 26, 2023, and published on March 26, 2024, with the publication number of 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 along the vertical direction. With such a structure, it is possible to seek reliable grinding operations on the rail to be ground by the abrasive belt grinding wheel train mechanism through the movable part. Moreover, since the movement mechanism of the rail abrasive belt grinding machine of this invention is optimized, the structure is more compact, thus realizing the lightweight of the whole machine to a certain extent.

[0007] The three small rail grinding devices involved in the above Documents 1-3 also have the following technical defects:

[0008] 1) Each single device only includes 1-2 grinding heads. The number of grinding heads is small, and only one side of the rail can be ground at a time, resulting in low grinding efficiency.

[0009] 2) The functions of pressing down and deflecting the grinding head both need to be manually operated, and the grinding device needs to be pushed manually during use, resulting in a relatively large labor intensity for the operators.

[0010] 3) The small grinding device has a single function and cannot take into account both the grinding of the main line and the switch grinding operation. Summary of the Invention

[0011] In view of this, the purpose of this application is to provide a rail grinding unit and a grinding device to solve the technical problems of low operation efficiency of the existing grinding operation device, the need for manual operation and cooperation, and relatively large labor intensity.

[0012] To achieve the above-mentioned invention object, the present application specifically provides a technical implementation solution for a rail grinding unit, including: 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, and the lifting drive mechanism is installed between the cradle and the grinding motor. 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 telescopic movement of the deflection drive mechanism can drive the cradle to rotate around the rotating shaft to realize the deflection action of the grinding head.

[0013] Further, the tail end of the deflection drive mechanism is installed at the crossbeam position on the upper part of the unit frame through the upper seat of the deflection drive mechanism.

[0014] Further, the telescopic rod end of the deflection drive mechanism is installed at the lower part of the cradle through the lower seat of the deflection drive mechanism.

[0015] Further, the tail end of the lifting drive mechanism is installed on the cradle through the upper seat of the lifting drive mechanism.

[0016] Further, the telescopic rod end of the lifting drive mechanism is installed on the grinding motor through the lower seat of the lifting drive mechanism.

[0017] Further, the grinding motor adopts a hydraulic motor.

[0018] Further, a slide rail is provided inside the cradle, and the grinding motor is movably connected to the cradle through the slide rail. The grinding motor can be driven by the lifting drive mechanism to perform a lifting movement along the slide rail to realize the lifting action of the grinding head.

[0019] Further, the guide rail slider mechanism includes a guide rail and a slider movably installed on the guide rail. The guide rail is installed on the unit frame, and the slider is installed on the vehicle frame.

[0020] Further, the rail grinding unit further includes a transverse movement drive mechanism. The transverse movement drive mechanism is installed between the vehicle frame and the unit frame, and the telescopic movement of the transverse movement drive mechanism can drive the unit frame to perform a transverse movement along the guide rail to realize the transverse movement action of the grinding head.

[0021] The present application also specifically provides a technical implementation solution for a grinding device, including: a vehicle frame and the above-mentioned rail grinding unit installed on the vehicle frame.

[0022] Furthermore, the grinding device includes two unit frames symmetrically arranged left and right. Each unit frame is longitudinally equipped with three grinding units, one of which is a disc-type grinding unit and the other two are cup-type grinding units.

[0023] Furthermore, the grinding head of the cup-type grinding unit is a cup-type grinding head, which is used to grind the straight-line track; the grinding head of the disc-type grinding unit is a disc-type grinding head, which is used to grind the turnout track.

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

[0025] Furthermore, the grinding device is also equipped with a lifting drive mechanism. The tail end of the lifting drive mechanism is installed on the vehicle frame, and the telescopic rod end is installed on the rail-leaning device. The rail-leaning device can be lifted and lowered as needed.

[0026] Furthermore, fire shields are installed on both the left and right sides of the vehicle frame, and the protruding distance and installation height of the fire shields can be adjusted.

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

[0028] Furthermore, 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 seat to the mounting beam of the excavator main body through a traction rod, and the two grinding devices are coupled by connecting the traction mounting seats of the two grinding devices through a traction rod.

[0029] By implementing the technical solutions of the rail grinding unit and the grinding device provided in the present application, the following beneficial effects are obtained:

[0030] (1) For the rail grinding unit and the grinding device 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;

[0031] (2) For the rail grinding unit and the grinding device of the present application, the structure design of the grinding unit is concise. The lifting action and the deflection action are both driven by a hydraulic mechanism, reducing the labor intensity of workers and improving the action adjustment efficiency;

[0032] (3) For the rail grinding unit and the grinding device of the present application, the grinding unit integrates a cup-type grinding head and a disc-type grinding head at the same time. The grinding unit can slide horizontally and has the ability to grind both the straight line and the turnout. Description of the Drawings

[0033] 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 use in 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, without creative efforts, other embodiments can also be obtained based on these drawings.

[0034] Figure 1 It is a schematic structural diagram of a specific embodiment of a rail grinding vehicle to which the rail grinding unit of the present application is applied;

[0035] Figure 2 It is a three-dimensional structural diagram of a specific embodiment of a rail grinding vehicle to which the rail grinding unit of the present application is applied;

[0036] Figure 3 It is a schematic structural diagram of an arm docking head in a specific embodiment of a rail grinding vehicle to which the rail grinding unit of the present application is applied;

[0037] Figure 4 It is a three-dimensional structural diagram of a specific embodiment of the grinding device of the present application;

[0038] Figure 5 It is a side view of the internal structure of a specific embodiment of the grinding device of the present application;

[0039] Figure 6 It is a side view of the structure of a specific embodiment of the grinding device (excluding the grinding unit) of the present application;

[0040] Figure 7 It is a three-dimensional structural diagram of the vehicle frame in a specific embodiment of the grinding device of the present application;

[0041] Figure 8 It is a three-dimensional structural diagram of the unit frame in a specific embodiment of the grinding device of the present application;

[0042] Figure 9 It is a schematic structural diagram of a specific embodiment of the rail grinding unit of the present application;

[0043] Figure 10 It is a side view of the schematic structure of a specific embodiment of the rail grinding unit of the present application;

[0044] Figure 11 It is a top view of the schematic structure of a specific embodiment of the rail grinding unit of the present application;

[0045] Figure 12 It is a front view of the schematic structure of a specific embodiment of the rail grinding unit of the present application;

[0046] Figure 13It is a three-dimensional structure schematic diagram of a cup-shaped grinding unit in a specific embodiment of the rail grinding unit of the present application;

[0047] Figure 14 It is a schematic side view of the structure of a cup-shaped grinding unit in a specific embodiment of the rail grinding unit of the present application;

[0048] Figure 15 It is a schematic front view of the structure of a cup-shaped grinding unit in a specific embodiment of the rail grinding unit of the present application;

[0049] Figure 16 It is a schematic top view of the structure of a cup-shaped grinding unit in a specific embodiment of the rail grinding unit of the present application;

[0050] Figure 17 It is a three-dimensional structure schematic diagram of a dish-shaped grinding unit in a specific embodiment of the rail grinding unit of the present application;

[0051] Figure 18 It is a schematic side view of the structure of a dish-shaped grinding unit in a specific embodiment of the rail grinding unit of the present application;

[0052] Figure 19 It is a schematic front view of the structure of a dish-shaped grinding unit in a specific embodiment of the rail grinding unit of the present application;

[0053] Figure 20 It is a schematic top view of the structure of a dish-shaped grinding unit in a specific embodiment of the rail grinding unit of the present application;

[0054] Figure 21 It is a block diagram of the system structure composition of a specific embodiment of the remote control system for rail grinding applied to a rail grinding vehicle;

[0055] 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 a rail grinding vehicle;

[0056] 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 contact device, 45 - Fire shield, 46 - Control box, 47 - Unit frame, 48 - Cup grinding unit, 49 - Disc 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 grinding head, 418 - Disc 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 - Travel mode switching drive mechanism, 13 - Rail wheel, 100 - Rail grinding vehicle, 101 - Portable control terminal, 102 - Portable radio, 103 - Vehicle-mounted radio, 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, 204 - Second Ethernet switch, 205 - Second vehicle-mounted main control module, 206 - Second network camera. Detailed implementation mode

[0057] For the sake of citation and clarity, the technical terms, abbreviations or acronyms used in the following text are recorded as follows:

[0058] MimoMesh: Short for Multiple Input Multiple Output Mesh, a multi-input multi-output wireless mesh network;

[0059] CAN: Short for Controller Area Network, a controller area network bus;

[0060] WIFI: Wireless fidelity, a wireless local area network communication technology based on the IEEE 802.11 standard;

[0061] 5G: Short for 5th Generation Mobile Communication Technology, the fifth generation of mobile communication technology.

[0062] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will, in conjunction with the accompanying drawings in the embodiments of this application, clearly and completely describe the technical solutions in the embodiments of this application. Apparently, the described embodiments are only part of the embodiments of this application, rather than all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

[0063] As shown in the Figure 1 to Figure 22 accompanying drawings, specific embodiments of the rail grinding unit and grinding device of this application are given. The following will further explain this application in conjunction with the accompanying drawings and specific embodiments.

[0064] Embodiment 1

[0065] As shown in the Figure 9 to Figure 20 accompanying drawings, an embodiment of the rail grinding unit of this 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. Through the lifting drive mechanism 415, the grinding motor 419 can be driven to perform a lifting movement relative to the cradle 420. 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. Through the telescoping of the deflection drive mechanism 413, the cradle 11 can be driven to rotate around the rotating shaft 425, realizing the deflection action of the grinding head.

[0066] As a preferred specific embodiment of this application, the lifting drive mechanism 415 further adopts a lifting oil cylinder, and the deflection drive mechanism 413 further adopts a deflection oil cylinder.

[0067] 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.

[0068] The end of the lifting drive mechanism 415 is mounted 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 mounted 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.

[0069] A slide rail 423 is arranged inside the cradle 420. 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 mounted on the guide rail. The guide rail is mounted on the unit frame 47, and the slider is mounted on the vehicle frame 42.

[0070] The rail grinding unit further includes a transverse movement drive mechanism 424. The transverse movement drive mechanism 424 is mounted 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 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.

[0071] Embodiment 2

[0072] As shown in the append Figure 4 to the append Figure 8 As shown, an embodiment of the grinding device 4 of the present application specifically includes: a vehicle frame 42, and a rail grinding unit mounted on the vehicle frame 42 as described in Embodiment 1.

[0073] The grinding device 4 further 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 grinding unit, and the other two grinding units 40 are cup grinding units.

[0074] The grinding head of the cup grinding unit adopts a cup grinding head 417, and the cup grinding head 417 is used to realize the grinding of the main line. The grinding head of the disc grinding unit adopts a disc grinding head 418, and the disc grinding head 418 is used to realize the grinding of the turnout line. The grinding actions, lifting and falling actions, and deflection actions of the two grinding units are all hydraulically driven, and the hydraulic source comes from a rail-road dual-purpose excavator.

[0075] Travel wheels 43 and rail-leaning devices 44 are installed under the four corners of the vehicle frame 42. The rail-leaning devices 44 are located inside the travel wheels 43. The grinding device 4 is also equipped with a lifting drive mechanism 410. The end of the lifting drive mechanism 410 is mounted on the vehicle frame 42, and the telescopic rod end is mounted on the rail-leaning device 44. The rail-leaning device 44 can be lifted and lowered as needed.

[0076] Fire shields 45 are installed on both the left and right sides of the frame 42, and the extension distance and installation height of the fire shields 45 can be flexibly adjusted. A control box 46 is installed at the rear of the 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.

[0077] Traction mounting seats 427 are arranged at both the front and rear ends of the 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 towing rod 5. The two grinding devices 4 are coupled by connecting the traction mounting seats 427 of the two grinding devices 4 through a towing rod 5.

[0078] Embodiment 3

[0079] As shown in the Figure 1 and Figure 2 As shown in the appended drawings, an embodiment of a rail grinding vehicle 100 to which the rail grinding unit described in Embodiment 1 is applied, specifically includes: a rail-road dual-purpose excavator, a grinding device 4, and a towing rod 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 is lifted by the rail-road dual-purpose excavator to realize autonomous getting on and off the track. One end of the towing rod 5 is connected to the grinding device 4, and the other end is connected to the excavator main body 1. The excavator main body provides power for the running of the grinding device 4. The grinding device 4 has the functions of autonomous getting on 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.

[0080] First, the rail-road dual-purpose excavator gets on the track. The rail-road dual-purpose excavator hoists the grinding device 4 onto the track 6 through the excavating arm 2. The excavator main body 1 and the grinding device 4 are connected through a towing rod 5, and the power supply and oil supply of the grinding device 4 are connected and installed 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.

[0081] After the construction equipment is on the track, the construction personnel power on the control terminal of the grinding device 4, the radio station, etc. After the grinding device 4 is powered on, the construction personnel stand in the area beside the track where they can visually observe the grinding equipment, set the grinding mode through the portable control terminal 101, and then remotely start the grinding motor 419 of the grinding device 4. After the grinding motor 419 is started, the grinding device 4 is pushed by the rail-road excavator to move forward. The grinding head of the grinding motor 419 is lowered at a suitable position to start the grinding operation. After a single pass of grinding is completed, the grinding head is lifted, and then the grinding device 4 is controlled to reciprocate for grinding until the current construction task is completed. The remotely controlled small rail grinding equipment described in this embodiment is mainly applied to turnout grinding and on-track maintenance grinding operations. After the rail grinding vehicle 100 is on the track, only one person is required to operate to complete the grinding construction. The rail grinding vehicle further includes a towing bar 5. 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 excavator provides power for the movement of the grinding device 4.

[0082] As shown in the appendix Figure 3 As shown, 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 appendix Figure 4 As shown, 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 excavator to achieve the function of automatically getting on and off the track. 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 travel 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 this application, the travel mode switching drive mechanism 12 can specifically adopt an oil cylinder. By the expansion and contraction of the travel mode switching drive mechanism 12, the lifting and lowering of the rail wheel 13 can be realized, and further the switching between the road travel mode and the rail travel mode of the rail-road excavator can be realized.

[0083] It should be particularly noted that in the specific embodiment of this application, the oil cylinder can also be replaced by an electric cylinder or a pneumatic cylinder.

[0084] Embodiment 4

[0085] 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 3 mainly includes ground - end (or a driver's cab 107 provided on the rail grinding vehicle 100) equipment and vehicle - mounted - end 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, the ground - end is specifically introduced), 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. 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. After receiving the wirelessly sent data, the portable radio 102 transmits it to the portable control terminal 101 in the form of wired Ethernet or WIFI for monitoring.

[0086] 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 in the figure, the coupling control can be realized by connecting the No. 1 vehicle and the No. 2 vehicle through an Ethernet switch network cable. 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.

[0087] 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, which 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.

[0088] The portable control terminal 101 is equipped with a touch screen and integrates the control and display interface of the host computer. The control and display interface of the host computer 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 into Ethernet data again 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 connection 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 connection mode is selected, the display automatically shows the data of multiple rail grinding vehicles according to the number of multiple-unit connected 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- to 5-hour construction skylight point. The touch screen can be operated in a touch form or a mouse click form, and can quickly send down the grinding control data. The portable control terminal 101 is equipped with a high-performance processor.

[0089] 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.

[0090] 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.

[0091] The Ethernet switch 104 adopts a 100-Mbps 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 coupled 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.

[0092] The vehicle main control module 105 is the core of vehicle control and is integrated with rich interfaces such as Ethernet interfaces and CAN interfaces. 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 distribute logical operation control data, receive drive status information, and receive 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 and can realize the drive control of various vehicle devices and the collection of status information. The vehicle main control module 105 not only performs logical operations on control data but also realizes the conversion between CAN communication data and Ethernet communication data.

[0093] This embodiment is based on a wireless network. In particular, the remote control system for 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 fixed network layout area, 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 efficiency of rail grinding. 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 industry pain points such as low efficiency of turnout grinding and line emergency repair and safety risks. At the same time, on the premise of ensuring safety and reliability, the operation quality and efficiency are improved, the number of construction personnel is reduced, the construction safety is guaranteed, and the harm of construction dust and noise to personnel is reduced. 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, which can realize Ethernet reconnection between multiple vehicles, ensure reliable transmission of reconnection signals, multi-vehicle collaborative operation, and improve the efficiency of grinding construction.

[0094] The remote control system for rail grinding described in this embodiment separates equipment control, status monitoring, and traveling construction. The control data at the ground end is sent 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 at 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 remote control of the grinding vehicle.

[0095] 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.

[0096] It should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "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.

[0097] 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.

[0098] 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 this technology to understand and read, and are not used to limit the implementable conditions of the present application. Therefore, they do not have technical essential significance. 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.

[0099] By implementing the technical solutions of the rail grinding unit and grinding device described in the specific embodiments of the present application, the following technical effects can be achieved:

[0100] (1) For the rail grinding unit and grinding device described in the specific embodiments of the present application, 3 grinding heads are integrated in a single-side grinding unit, and 2 grinding units can be integrated in the grinding device at the same time. The two sides of the rail can be ground simultaneously, greatly improving the grinding efficiency;

[0101] (2) For the rail grinding unit and grinding device described in the specific embodiments of the present application, the structure design of the grinding unit is concise. The lifting action and deflection action are both driven by a hydraulic mechanism, reducing the labor intensity of workers and improving the action adjustment efficiency;

[0102] (3) For the rail grinding unit and grinding device described in the specific embodiments of the present application, the grinding unit integrates a cup-shaped grinding head and a disc-shaped grinding head at the same time. The grinding unit can slide horizontally and has the ability to grind both the main line and the turnout.

[0103] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0104] As described above, it is only the preferred embodiment of the present application, and it does not impose any formal restrictions on the present application. Although the present application has been disclosed above with the preferred embodiment, 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 according to 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 unit, characterized in that, Including: 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 lifting driving mechanism (415) can drive the grinding motor (419) to perform a lifting movement relative to the cradle (420); a rotating shaft seat (422) is arranged 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.

2. The rail grinding unit according to claim 1, characterized in that: The tail end of the deflection driving 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 driving mechanism.

3. The rail grinding unit according to claim 2, wherein: The telescopic rod end of the deflection driving mechanism (413) is installed at the lower part of the cradle (420) through the lower seat (421) of the deflection driving mechanism.

4. The rail grinding unit according to any one of claims 1 to 3, characterized in that: The tail end of the lifting driving mechanism (415) is installed on the cradle (420) through the upper seat (414) of the lifting driving mechanism.

5. The rail grinding unit according to claim 4, characterized in that: The telescopic rod end of the lifting driving mechanism (415) is installed on the grinding motor (419) through the lower seat (416) of the lifting driving mechanism.

6. The rail grinding unit according to claim 1, 2, 3 or 5, characterized in that: The grinding motor (419) adopts a hydraulic motor.

7. The rail grinding unit according to claim 6, characterized in that: 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), and the lifting driving mechanism (415) can drive the grinding motor (419) to perform a lifting movement along the slide rail (423) to realize the lifting action of the grinding head.

8. The rail grinding unit according to claim 1, 2, 3, 5 or 7, 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).

9. The rail grinding unit according to claim 8, characterized in that: The rail grinding unit further includes a transverse movement driving mechanism (424), and the transverse movement driving mechanism (424) is installed between the vehicle frame (42) and the unit frame (47), and the telescopic movement of the transverse movement driving mechanism (424) can drive the unit frame (47) to perform a transverse movement along the guide rail to realize the transverse movement action of the grinding head.

10. A grinding device, characterized in that, Including: A vehicle frame (42), and the rail grinding unit according to any one of claims 1 to 9 above, installed on the vehicle frame (42).

11. The grinding device according to claim 10, wherein: The grinding device (4) includes two unit frames (47) symmetrically arranged left and right. Each unit frame (47) is longitudinally equipped with three grinding units (40), one of which is a disc grinding unit, and the other two are cup grinding units.

12. The grinding device according to claim 11, characterized in that: The grinding head of the cup grinding unit is a cup grinding head (417), and the cup grinding head (417) is used for grinding the main line; the grinding head of the disc grinding unit is a disc grinding head (418), and the disc grinding head (418) is used for grinding the turnout line.

13. The grinding device according to any one of claims 10 to 12, characterized in that: Travel 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 travel wheels (43).

14. The grinding device according to claim 13, characterized in that: The grinding device (4) is also equipped 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 required.

15. The grinding device according to claim 10, 11, 12 or 14, characterized in that: Fire shields (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 shields (45) can be adjusted.

16. The grinding device according to claim 15, characterized in that: A control box (46) is installed at the rear of the vehicle frame (42). An on-vehicle radio (103), an Ethernet switch (104), and an on-vehicle main control module (105) are arranged in the control box (46).

17. The grinding device according to claim 10, 11, 12, 14 or 16, characterized in that: Traction mounting seats (427) are provided 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 reconnected by connecting the traction mounting seats (427) of the two grinding devices (4) through a traction rod (5).

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