Grinding device and grinding vehicle having the same

Abstract

The present invention relates to a grinding device and a grinding vehicle with the grinding device, wherein the grinding device is used on the grinding vehicle and comprises: a vehicle frame, a lifting control unit and two groups of grinding units; the lifting control unit comprises 2n lifting controllers, the vehicle frame is connected to the lifting control unit, and the spacing between the vehicle frame and the bottom of the grinding vehicle is changed by the lifting control unit; n is a positive integer; the two groups of grinding units are symmetrically arranged on both sides of the vehicle frame, each group of grinding units comprises one or more groups of position control units and a grinding head assembly; the position control unit is respectively connected to the vehicle frame and the grinding head assembly, and the grinding head assembly is controlled and adjusted by the position control unit to adjust the position posture relative to the rail, so as to grind the rail under the grinding vehicle.

Description

Technical Field

[0001] The invention relates to the field of mechanical technology, and in particular to a grinding device and a grinding vehicle having the grinding device. Background Art

[0002] Under the new urbanization and public transportation priority development strategy, the application prospects of modern trams and subways in China have been generally recognized and are gradually moving towards a diversified and large-scale development stage. With the increase in the total weight and service time of the rails, various diseases such as wavy wear, fat edges, and peeling blocks have occurred on the surface and inside of the rails. If such diseases are not removed in time, it will affect the stability and comfort of the train operation. In severe cases, it will cause major safety accidents such as derailment of the running train, resulting in high maintenance costs.

[0003] Rail grinding is recognized worldwide as one of the most effective rail maintenance technologies. Grinding tools are used to remove the damaged layer of rail tread to improve the wheel-rail contact relationship, extend the service life of the rail, and ensure the safe operation of the train.

[0004] At present, whether it is a large-scale rail grinding train suitable for long-distance line operations or a small-scale rail grinding equipment suitable for short-line operations between small areas, most of them are only suitable for running on rails and cannot be driven on roads. There are bound to be certain limitations, especially in urban rail operations, which will cause difficulties in transfer.

[0005] The invention relates to a grinding device for a rail grinding vehicle which is suitable for traveling in two modes: on rails and on roads. Summary of the invention

[0006] The purpose of the present invention is to provide a grinding device and a grinding vehicle with the grinding device to address the defects of the prior art, which can grind rails, remove the material of the damaged layer on the rail tread to improve the wheel-rail contact relationship, extend the service life of the rails, and ensure the safe operation of the train. In addition, by adding running wheels to the bottom of the grinding device, the device can travel on rails and roads, solve the problem of track operation transfer, and improve the overall operation efficiency.

[0007] To achieve the above-mentioned object, the first aspect of the present invention provides a grinding device, which is used on a grinding vehicle and comprises: a vehicle frame, a lifting control unit and two sets of grinding units;

[0008] The lifting control unit includes 2n lifting controllers, the frame is connected to the lifting control unit, and the distance between the frame and the bottom of the grinding vehicle is changed by the lifting control unit; n is a positive integer;

[0009] The two groups of grinding units are symmetrically arranged on both sides of the frame, and each group of grinding units includes one or more groups of position control units and a grinding head assembly; the position control unit is respectively connected to the frame and the grinding head assembly, and the grinding head assembly is controlled and adjusted by the position control unit to adjust the position posture relative to the rail, so as to grind the rail under the grinding vehicle.

[0010] Preferably, the lifting controller is specifically a lifting control cylinder; one end of the lifting control cylinder is fixed on the grinding vehicle, and the other end is fixedly connected to the vehicle frame.

[0011] Preferably, the lifting control unit further comprises: a lifting control guide device and a guide groove;

[0012] The guide groove is vertically mounted on the grinding vehicle;

[0013] One end of the lifting control guide device is fixed on the frame, and the other end is slidably arranged in the guide groove to limit the vertical lifting of the frame along the direction of the guide groove.

[0014] Further preferably, the lifting control guide device comprises: a roller bracket and three rollers;

[0015] The bottom end of the roller bracket is fixed on the frame; the three rollers are respectively fixed on both sides and the top end of the roller bracket;

[0016] When the lifting control guide device slides in the guide groove, the three rollers are in contact with the three inner walls of the guide groove respectively.

[0017] Preferably, the position control unit comprises: a deflection control unit and a grinding head assembly lifting control unit;

[0018] The deflection control unit comprises: a deflection oil cylinder, a fixed frame, a sliding wheel and a deflection guide groove; the fixed frame is L-shaped and comprises a first fixed side and a second fixed side; one end of the deflection oil cylinder is fixed to the frame, and the other end is connected to the first fixed side of the fixed frame; the sliding wheel is arranged in the deflection guide groove, and the sliding wheel has a connecting portion connected to the first fixed side of the fixed frame in the axial direction; the deflection guide groove is arc-shaped and arranged on the frame;

[0019] The grinding head assembly lifting control unit comprises: a movable plate, a movable arm and a grinding force cylinder; one end of the grinding force cylinder is fixed to the second fixed side of the fixed frame, and the other end is fixed to the movable plate; one end of the movable arm is hinged to the first fixed side of the fixed frame, and the other end is hinged to the movable plate; the grinding head assembly is arranged on the movable plate;

[0020] When the deflection oil cylinder is working, it drives the fixing frame to deflect, and limits the deflection angle of the fixing frame through the sliding wheel, thereby adjusting the angle between the grinding head assembly and the rail;

[0021] When the grinding force cylinder is working, it drives the movable plate and the grinding head assembly fixed on the movable plate to perform lifting and lowering movements, thereby adjusting the grinding pressure on the rail.

[0022] Preferably, the grinding head assembly comprises: a driving motor, a transmission device, a grinding head and a grinding wheel;

[0023] The transmission device is fixed on the movable plate, the top end of the transmission device is connected to the driving motor, and the bottom end is fixedly connected to the top end of the grinding head; the grinding wheel is fixed to the bottom end of the grinding head;

[0024] When the driving motor is working, the grinding head and the grinding wheel fixed on the grinding head are driven to rotate through the transmission device.

[0025] Preferably, the grinding device further comprises: a traveling wheel;

[0026] The running wheel is fixed to the bottom end of the frame, so that the grinding device moves along with the grinding vehicle.

[0027] Preferably, the grinding device further comprises a lifting lug;

[0028] The lifting lug is mounted on the frame;

[0029] When the grinding device is in a non-operating state, the grinding device is hoisted under the grinding vehicle through the lifting lugs.

[0030] Preferably, during the grinding operation, the lifting controller controls the frame and the grinding unit fixed on the frame to descend to the working position according to the operation control signal; the position control unit adjusts the position and posture of the grinding head assembly and the rail according to the position control signal; the grinding head assembly grinds the rail according to the grinding control signal;

[0031] When the grinding vehicle stops running or the grinding operation is finished, the lifting controller controls the frame and the grinding unit fixed on the frame to rise to the initial position according to the stop operation control signal; the position control unit controls the grinding head assembly to return to the initial position according to the stop operation control signal; the grinding head assembly stops grinding the rail under the grinding vehicle according to the stop operation control signal.

[0032] A second aspect of the present invention provides a grinding vehicle with a grinding device, wherein the grinding vehicle comprises any one of the grinding devices of the first aspect, and the grinding device is hoisted at the bottom of the grinding vehicle.

[0033] The grinding device and the grinding vehicle with the grinding device provided in the embodiment of the present invention can grind rails, remove the material of the damaged layer on the rail tread to improve the wheel-rail contact relationship, extend the service life of the rails, and ensure the safe operation of the train. In addition, running wheels can be added to the bottom of the grinding device to achieve running on rails and roads, solve the problem of track operation transfer, and improve the overall operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of the structure of a grinding device provided in an embodiment of the present invention;

[0035] Figure 2 A schematic diagram of the structure of a lifting control guide device provided in an embodiment of the present invention;

[0036] Figure 3 A schematic top view of a lifting control guide device provided in an embodiment of the present invention;

[0037] Figure 4 A side schematic diagram of a grinding device provided by an embodiment of the present invention;

[0038] Figure 5 A schematic diagram of the structure of a grinding unit provided in an embodiment of the present invention;

[0039] Figure 6 A schematic structural diagram of a grinding head assembly provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0040] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments.

[0041] The grinding device and the grinding vehicle with the grinding device provided by the present invention can grind rails, remove the material of the damaged layer on the rail tread to improve the wheel-rail contact relationship, extend the service life of the rails, and ensure the safe operation of the train. In addition, running wheels can be added to the bottom of the grinding device to achieve running on rails and roads, solve the problem of track operation transfer, and improve the overall operation efficiency.

[0042] Figure 1 The schematic diagram of the structure of the grinding device provided by the embodiment of the present invention is as follows Figure 1 The technical solution of the present invention is described in detail.

[0043] like Figure 1 As shown, the grinding device is used on a grinding vehicle, and comprises: a vehicle frame 1, a lifting control unit 2 and two sets of grinding units 3.

[0044] The lifting control unit 2 includes 2n lifting controllers 21. The frame 1 is connected to the lifting control unit 2, and the distance between the frame 1 and the bottom of the grinding vehicle is changed by the lifting control unit 2. n is a positive integer. Two groups of grinding units 3 are symmetrically arranged on both sides of the frame 1, and each group of grinding units 3 includes one or more groups of position control units 31 and a grinding head assembly 32. The position control unit 31 is connected to the frame 1 and the grinding head assembly 32 respectively. The grinding head assembly 32 is controlled by the position control unit 31 to adjust the position posture relative to the rail, so as to grind the rail under the grinding vehicle.

[0045] In the embodiment of the present invention, the lifting controller 21 is specifically a lifting control cylinder. In actual use, other devices with lifting functions can be selected according to the situation. One end of the lifting control cylinder is fixed on the grinding vehicle, and the other end is fixedly connected to the vehicle frame 1.

[0046] Figure 1 The middle frame 1 is rectangular, and the four lifting controllers 21 are respectively connected to the four corners of the frame 1. A group of grinding units 3 is three grinding units 3 on one side of the frame. In actual design, the shape of the frame 1, the number of lifting controllers 21, the number of groups of grinding units 3, and the number of position control units 31 and grinding head assemblies 32 in each group of grinding units 3 can be selected according to needs.

[0047] Figure 2 A schematic diagram of the structure of the lifting control guide device 22 provided in an embodiment of the present invention is shown in FIG. Figure 2 As shown, in order to prevent the grinding device from shifting during the lifting process, the lifting control unit 2 also includes: a lifting control guide device 22 and a guide groove 23. The guide groove 23 is U-shaped and vertically installed on the grinding vehicle. One end of the lifting control guide device 22 is fixed on the frame 1, and the other end is slidably arranged in the guide groove 23 to limit the vertical lifting of the frame 1 along the direction of the guide groove 23. The lifting control unit 2 solves the problem of the grinding device shifting during the lifting process, and realizes the accurate lifting and lowering of the grinding device on the rail.

[0048] Figure 3 A top view of the lifting control guide device 22 provided in an embodiment of the present invention is shown in FIG. Figure 3 As shown, the lifting control guide device 22 includes: a roller bracket 221 and three rollers 222. The bottom end of the roller bracket 221 is fixed on the frame 1. The three rollers 222 are respectively fixed on both sides and the top of the roller bracket 221. When the lifting control guide device 22 slides in the guide groove 23, the three rollers 222 contact the three inner walls of the guide groove 23 respectively. The rollers 222 can ensure that the lifting control guide device 22 slides along the guide groove 23, and at the same time, the lifting control guide device 22 will not deviate when sliding in the guide groove 23, further ensuring the accurate lifting and lowering of the grinding device.

[0049] Figure 4 A side view of a grinding device provided by an embodiment of the present invention, Figure 5 A schematic diagram of the structure of the grinding unit 3 provided in an embodiment of the present invention is shown in FIG. Figure 4 and Figure 5 As shown, the position control unit 31 includes: a deflection control unit 311 and a grinding head assembly lifting control unit 312. The deflection control unit 311 is used to adjust the angle between the grinding head assembly 32 and the rail, and the grinding head assembly lifting control unit 312 is used to adjust the pressure applied by the grinding head assembly 32 to the rail. The deflection control unit 311 and the grinding head assembly lifting control unit 312 work together to determine the position and posture of the grinding head assembly 32 and the rail.

[0050] The deflection control unit 311 includes: a deflection oil cylinder 3111, a fixed frame 3112, a sliding wheel 3113 and a deflection guide groove 3114. The fixed frame 3112 is L-shaped and includes a first fixed edge and a second fixed edge. One end of the deflection oil cylinder 3111 is fixed to the frame 1, and the other end is connected to the first fixed edge of the fixed frame 3112. The sliding wheel 3113 is arranged in the deflection guide groove 3114, and the sliding wheel 3113 has a connecting portion connected to the first fixed edge of the fixed frame 3112 in the axial direction. The deflection guide groove 3114 is arc-shaped and is arranged on the frame 1.

[0051] The grinding head assembly lifting control unit 312 includes: a movable plate 3122, a movable arm 3121 and a grinding force cylinder 3123. One end of the grinding force cylinder 3123 is fixed to the second fixed edge of the fixed frame 3112, and the other end is fixed to the movable plate 3122. One end of the movable arm 3121 is hinged to the first fixed edge of the fixed frame 3112, and the other end is hinged to the movable plate 3122. The grinding head assembly 32 is arranged on the movable plate 3122.

[0052] When the deflection cylinder 3111 is working, it drives the fixed frame 3112 to deflect, and limits the deflection angle of the fixed frame 3112 through the sliding wheel 3113, thereby adjusting the angle between the grinding head assembly 32 and the rail. When the grinding force cylinder 3123 is working, it drives the movable plate 3122 and the grinding head assembly 32 fixed on the movable plate 3122 to move up and down, thereby adjusting the grinding pressure on the rail, and then adjusting the amount of grinding on the rail.

[0053] Figure 6 A schematic diagram of the structure of the grinding head assembly 32 provided in an embodiment of the present invention is shown in FIG. Figure 6As shown, the grinding head assembly 32 includes: a driving motor 321, a transmission device 322, a grinding head 323 and a grinding wheel 324. The transmission device 322 is fixed on the movable plate 3122, the top end of the transmission device 322 is connected to the driving motor 321, and the bottom end is fixedly connected to the top end of the grinding head 323. The grinding wheel 324 is fixed to the bottom end of the grinding head 323. When the driving motor 321 is working, the grinding head 323 and the grinding wheel 324 fixed on the grinding head 323 are driven to rotate through the transmission device 322 to grind the surface of the rail.

[0054] In a preferred embodiment, Figure 1 As shown, the grinding device also includes a running wheel 4. The running wheel 4 is fixed to the bottom end of the frame 1, so that the grinding device moves with the grinding vehicle, realizing the function of the grinding device walking and pulling on the rail, and the function of walking on the road during the track operation transfer, thereby improving the overall efficiency of the track operation.

[0055] In a further preferred embodiment, the grinding device further comprises a lifting lug. The lifting lug is mounted on the vehicle frame 1. When the grinding device is in a non-operating state, the grinding device is hoisted under the grinding vehicle by the lifting lug, so that the position of the grinding device in the non-operating state is fixed, and the grinding device is prevented from falling without other power support.

[0056] The structure and connection relationship of the grinding device are described above. The operation process of the grinding device is described below based on the structure and connection relationship of the grinding device.

[0057] During the grinding operation, the lifting controller 21 of the lifting control unit 2 controls the frame 1 and the grinding unit 3 fixed on the frame 1 to descend to the working position according to the operation control signal. The deflection cylinder 3111 works according to the position control signal, driving the grinding unit 3 to deflect along the arc where the guide groove 23 is located. After deflecting to a certain angle, the grinding force cylinder 3123 drives the movable plate 3122 to descend to contact the rail according to the position control signal, and determines the pressure applied by the grinding head assembly 32 to the rail. The driving motor 321 of the grinding head assembly 32 works according to the grinding control signal, and drives the grinding head 323 and the grinding wheel 324 fixed on the grinding head 323 to rotate through the transmission device 322 to grind the surface of the rail.

[0058] When the grinding vehicle stops running or the grinding operation is finished, the lifting controller 21 controls the vehicle frame 1 and the grinding unit 3 fixed on the vehicle frame 1 to rise to the initial position according to the stop operation control signal. The position control unit 31 controls the grinding head assembly 32 to return to the initial position according to the stop operation control signal. The grinding head assembly 32 stops grinding the rail under the grinding vehicle according to the stop operation control signal.

[0059] The present invention also provides a grinding vehicle with a grinding device, comprising the above-mentioned grinding device, wherein the grinding device is hoisted at the bottom of the grinding vehicle.

[0060] The grinding device and the grinding vehicle with the grinding device of the present invention can grind rails, remove the material of the damaged layer on the rail tread to improve the wheel-rail contact relationship, extend the service life of the rails, and ensure the safe operation of the train. In addition, running wheels can be added to the bottom of the grinding device to achieve running on rails and roads, solve the problem of track operation transfer, and improve the overall operation efficiency.

[0061] In the present invention, unless otherwise clearly defined, all terms should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A grinding device, characterized in that: The grinding device is used on a grinding vehicle, and comprises: a vehicle frame, a lifting control unit and two sets of grinding units; The lifting control unit includes 2n lifting controllers, the frame is connected to the lifting control unit, and the distance between the frame and the bottom of the grinding vehicle is changed by the lifting control unit; n is a positive integer; The two groups of grinding units are symmetrically arranged on both sides of the frame, and each group of grinding units includes one or more groups of position control units and a grinding head assembly; the position control unit is connected to the frame and the grinding head assembly respectively, and the grinding head assembly is controlled by the position control unit to adjust the position posture relative to the rail, so as to grind the rail under the grinding vehicle; The position control unit includes: a deflection control unit and a grinding head assembly lifting control unit; The deflection control unit comprises: a deflection oil cylinder, a fixed frame, a sliding wheel and a deflection guide groove; the fixed frame is L-shaped and comprises a first fixed side and a second fixed side; one end of the deflection oil cylinder is fixed to the frame, and the other end is connected to the first fixed side of the fixed frame; the sliding wheel is arranged in the deflection guide groove, and the sliding wheel has a connecting portion connected to the first fixed side of the fixed frame in the axial direction; the deflection guide groove is arc-shaped and arranged on the frame; The grinding head assembly lifting control unit comprises: a movable plate, a movable arm and a grinding force cylinder; one end of the grinding force cylinder is fixed to the second fixed side of the fixed frame, and the other end is fixed to the movable plate; one end of the movable arm is hinged to the first fixed side of the fixed frame, and the other end is hinged to the movable plate; the grinding head assembly is arranged on the movable plate; When the deflection oil cylinder is working, it drives the fixing frame to deflect, and limits the deflection angle of the fixing frame through the sliding wheel, thereby adjusting the angle between the grinding head assembly and the rail; When the grinding force cylinder is working, it drives the movable plate and the grinding head assembly fixed on the movable plate to perform lifting and lowering movements, thereby adjusting the grinding pressure on the rail; The grinding head assembly comprises: a driving motor, a transmission device, a grinding head and a grinding wheel; The transmission device is fixed on the movable plate, the top end of the transmission device is connected to the driving motor, and the bottom end is fixedly connected to the top end of the grinding head; the grinding wheel is fixed to the bottom end of the grinding head; When the driving motor is working, the grinding head and the grinding wheel fixed on the grinding head are driven to rotate through the transmission device.

2. The grinding device according to claim 1, characterized in that: The lifting controller is specifically a lifting control cylinder; one end of the lifting control cylinder is fixed on the grinding vehicle, and the other end is fixedly connected to the vehicle frame.

3. The grinding device according to claim 1, characterized in that: The lifting control unit further comprises: a lifting control guide device and a guide groove; The guide groove is vertically mounted on the grinding vehicle; One end of the lifting control guide device is fixed on the frame, and the other end is slidably arranged in the guide groove to limit the vertical lifting of the frame along the direction of the guide groove.

4. The grinding device according to claim 3, characterized in that: The lifting control guide device comprises: a roller bracket and three rollers; The bottom end of the roller bracket is fixed on the frame; the three rollers are respectively fixed on both sides and the top end of the roller bracket; When the lifting control guide device slides in the guide groove, the three rollers are in contact with the three inner walls of the guide groove respectively.

5. The grinding device according to claim 1, characterized in that: The grinding device also includes: a running wheel; The running wheel is fixed to the bottom end of the frame, so that the grinding device moves along with the grinding vehicle.

6. The grinding device according to claim 1, characterized in that: The grinding device also includes a lifting lug; The lifting lug is mounted on the frame; When the grinding device is in a non-operating state, the grinding device is hoisted under the grinding vehicle through the lifting lugs.

7. The grinding device according to claim 1, characterized in that: During the grinding operation, the lifting controller controls the frame and the grinding unit fixed on the frame to descend to the working position according to the operation control signal; the position control unit adjusts the position and posture of the grinding head assembly and the rail according to the position control signal; the grinding head assembly grinds the rail according to the grinding control signal; When the grinding vehicle stops running or the grinding operation is finished, the lifting controller controls the frame and the grinding unit fixed on the frame to rise to the initial position according to the stop operation control signal; the position control unit controls the grinding head assembly to return to the initial position according to the stop operation control signal; the grinding head assembly stops grinding the rail under the grinding vehicle according to the stop operation control signal.

8. A grinding vehicle with a grinding device, characterized in that: The grinding vehicle comprises the grinding device according to any one of claims 1 to 7, and the grinding device is hoisted at the bottom of the grinding vehicle.

Images