Polishing device and polishing system

Abstract

The utility model provides a polishing device. The polishing device comprises a base, an installation arm assembly and a polishing mechanism. The mounting arm assembly is rotatably mounted on the base; the polishing mechanism comprises a mounting part, a polishing unit and a driving unit; the mounting piece is mounted on the mounting arm assembly; the polishing unit is mounted on the mounting part; and the driving unit is mounted on the mounting part, is connected with the polishing unit and is used for driving the polishing unit to operate. Meanwhile, the utility model further provides a polishing system. Compared with the prior art, the polishing device and the polishing system provided by the utility model are simple to operate and high in precision, and can efficiently process the physical height difference of the contact rail along the line direction, ensure the smoothness of the current collecting surface of the contact rail and improve the coupling stability of the shoe rail.

Description

Technical Field

[0001] The utility model relates to the technical field of maglev trains, in particular to a grinding device and a grinding system. Background Art

[0002] Maglev trains are modern, high-tech rail transit vehicles that use electromagnetic force to achieve contactless suspension and guidance between the train and the track, and then utilize the electromagnetic force generated by linear motors to pull the train. Maglev trains derive their electrical energy from the contact between the current collectors on the vehicle and the contact rails. The contact rail system is a rigid suspension system consisting of several contact rails and contact rail assemblies. Adjacent contact rails are interconnected by intermediate joints and expansion joints. The contact rail joints have varying degrees of assembly height differences due to product manufacturing and installation. This causes a cutting effect when the vehicle current collector passes through the height difference joints, resulting in poor contact between the current collector and the contact rail, arcing and erosion on the rail surface, and increased wear on the collector shoe and the contact rail. Therefore, a smooth contact rail current collecting surface is critical to ensuring stable current collection in maglev trains.

[0003] The existing solution involves manually grinding the contact rail joints with a grinder. This method is inefficient and cannot guarantee consistent grinding results. Therefore, in actual operation and maintenance, it is necessary to use automatic grinding tools to address the height difference of the contact rail system joints to ensure a smooth contact rail current-collecting surface.

[0004] However, in the prior art, it is difficult for tools for grinding the contact rail to achieve fast and accurate grinding of the contact rail. Therefore, how to provide a new grinding device to improve the grinding efficiency and grinding effect of the contact rail is an urgent problem to be solved in this field. Utility Model Content

[0005] The existing grinding tools are difficult to quickly and accurately grind the contact rail, and it is difficult to quickly and accurately deal with the height difference of the contact rail joint assembly and the contact rail suspension hard points. The utility model provides an automated, simple to operate, and high-precision grinding device, which can efficiently deal with the physical height difference of the contact rail along the line direction, ensure the smoothness of the contact rail current collecting surface, and improve the stability of the shoe rail coupling.

[0006] A grinding device includes a base, a mounting arm assembly, and a grinding mechanism;

[0007] The mounting arm assembly can be rotatably mounted on the base;

[0008] The grinding mechanism includes a mounting part, a grinding unit and a driving unit;

[0009] The mounting member is mounted on the mounting arm assembly;

[0010] The polishing unit is mounted on the mounting member;

[0011] The driving unit is mounted on the mounting member and connected to the grinding unit to drive the grinding unit to operate.

[0012] Preferably, the mounting arm assembly includes a rotating platform, a first connecting arm, a second connecting arm, and a telescopic unit;

[0013] The rotating platform and the base are spaced apart from each other, and the rotating platform and the base are parallel to each other;

[0014] The two ends of the first connecting arm are hinged to the base and the rotating platform respectively;

[0015] Two ends of the second connecting arm are hinged to the base and the rotating platform respectively, and the second connecting arm is parallel to the first connecting arm;

[0016] Both ends of the telescopic unit are hinged to the base and the first connecting arm respectively;

[0017] The mounting member is mounted on the rotating platform.

[0018] Preferably, the mounting arm assembly further comprises a rotating flange and a rotating drive mechanism;

[0019] The rotating flange can be rotatably mounted on the rotating platform;

[0020] The rotation drive mechanism is mounted on the rotating platform and connected to the rotating flange, so as to drive the rotating flange to rotate relative to the rotating platform;

[0021] The mounting member is mounted on the rotating flange.

[0022] Preferably, the mounting member is mounted on the mounting arm assembly via a connecting mechanism, a transverse movement mechanism is provided on the connecting mechanism, and the mounting member is mounted on a moving unit of the transverse movement mechanism;

[0023] The connecting mechanism is also provided with an F-rail positioning unit, which includes at least an F-rail top surface positioning plate and an F-rail side surface positioning plate. The F-rail top surface positioning plate is used to abut against the top surface of the F-rail, and the F-rail side surface positioning plate is used to abut against the side surface of the F-rail.

[0024] Preferably, the mounting member includes a fixed plate and a movable plate, the fixed plate is connected to the mounting arm assembly, and the movable plate is movably connected to the fixed plate;

[0025] The polishing unit and the driving unit are both installed on the movable plate.

[0026] Preferably, the movable plate is movably connected to the fixed plate through a movable unit group, and the movable unit group includes a moving rod, a first balance rod, a second balance rod, and a movable plate telescopic unit;

[0027] The movable rod and the fixed plate are spaced apart from each other, and the movable rod and the fixed plate are parallel to each other;

[0028] The two ends of the first balancing rod are hinged to the fixed plate and the moving rod respectively;

[0029] Two ends of the second balancing pole are hinged to the fixed plate and the movable pole respectively, and the second balancing pole is parallel to the first balancing pole;

[0030] The two ends of the movable plate telescopic unit are hinged to the fixed plate and the movable plate respectively;

[0031] The movable plate is installed on the moving rod.

[0032] Preferably, the mounting member is provided with a contact rail abutment positioning unit group, and the contact rail abutment positioning unit group includes a rail body top surface positioning plate, a rail body front surface positioning plate and a rail body back surface clamping unit;

[0033] The rail body top surface positioning plate is used to abut against the top surface of the contact rail;

[0034] The rail body front positioning plate is used to abut against the front of the contact rail;

[0035] The rail body back clamping unit includes a clamping transmission part, a clamping pad and a clamping drive part;

[0036] The clamping transmission member is movably arranged on the mounting member;

[0037] The clamping pad is arranged on the clamping transmission member;

[0038] The clamping drive member is connected to the clamping transmission member and is used to drive the clamping transmission member to operate so that the clamping pad is pressed against the back side of the contact rail.

[0039] Preferably, the clamping transmission member includes a clamping support rod, a positioning clamping rod, and a clamping balance rod;

[0040] One end of the clamping support rod is hinged to the clamping drive member, and the other end is hinged to one end of the positioning clamping rod, and the middle part of the clamping support rod is hinged to the mounting member;

[0041] The other end of the positioning clamping rod is equipped with the clamping pad;

[0042] One end of the clamping balance rod is hinged to the mounting piece, and the other end is hinged to the middle part of the positioning clamping rod.

[0043] Preferably, the grinding unit includes a driving wheel, a driven wheel, and a grinding belt;

[0044] The driving wheel is connected to the driving unit;

[0045] The driven wheel is rotatably mounted on the mounting member and is spaced apart from the driving wheel;

[0046] The grinding belt is arranged around the driving wheel and the driven wheel;

[0047] The grinding mechanism further includes a sanding belt tensioning unit group, and the sanding belt tensioning unit group includes a tensioning wheel and an elastic support unit;

[0048] The tensioning wheel is located between the driving wheel and the driven wheel, and is located in the space surrounded by the grinding belt;

[0049] The two ends of the elastic support unit are respectively connected to the mounting member and the tensioning wheel, so that the tensioning wheel can tension the grinding belt.

[0050] A grinding system comprises an operation positioning trolley and a grinding device as described above, wherein the base is mounted on the operation positioning trolley.

[0051] Compared with the prior art, the grinding device provided by the present invention includes a base, a mounting arm assembly, and a grinding mechanism; the mounting arm assembly can be rotatably mounted on the base; the grinding mechanism includes a mounting part, a grinding unit, and a driving unit; the mounting part is mounted on the mounting arm assembly; the grinding unit is mounted on the mounting part; the driving unit is mounted on the mounting part and is connected to the grinding unit to drive the grinding unit to operate. In the grinding device, the driving unit can drive the grinding unit to operate, so that the contact rail can be ground by the grinding unit. And because the mounting arm group can be rotatably mounted on the base, the position of the grinding unit can be quickly adjusted by the mounting arm group, so that the grinding unit can be quickly moved to the desired grinding position. The grinding device is simple to operate and has high precision. It can efficiently handle the physical height difference of the contact rail along the line direction, ensure the smoothness of the current receiving surface of the contact rail, and improve the stability of the shoe rail coupling. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0053] Figure 1A schematic diagram of the three-dimensional structure of a grinding device provided in an embodiment;

[0054] Figure 2 for Figure 1 A front view of the grinding device shown;

[0055] Figure 3 for Figure 1 a bottom view of the grinding device shown;

[0056] Figure 4 for Figure 1 A schematic diagram of the three-dimensional structure of some components of the grinding mechanism in the grinding device after they abut against the contact rail;

[0057] Figure 5 for Figure 4 a bottom view of the structure shown;

[0058] Figure 6 for Figure 4 a side view of the structure shown;

[0059] Figure 7 A schematic diagram of the three-dimensional structure of a grinding system provided in an embodiment. DETAILED DESCRIPTION

[0060] In order to help those skilled in the art better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0061] It should be noted that when a component is referred to as being “fixed on”, “mounted on” or “set on” another component, it can be directly on the other component or indirectly set on the other component; when a component is “connected” to another component, or a component is referred to as being “connected to” another component, it can be directly connected to the other component or indirectly connected to the other component.

[0062] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0064] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0065] The utility model provides a grinding device, which includes a base, a mounting arm assembly, and a grinding mechanism; the mounting arm assembly can be rotatably mounted on the base; the grinding mechanism includes a mounting piece, a grinding unit, and a driving unit; the mounting piece is mounted on the mounting arm assembly; the grinding unit is mounted on the mounting piece; the driving unit is mounted on the mounting piece and connected to the grinding unit to drive the grinding unit to operate. In the grinding device, the driving unit can drive the grinding unit to operate, so that the contact rail can be ground by the grinding unit. And because the mounting arm group can be rotatably mounted on the base, the position of the grinding unit can be quickly adjusted by the mounting arm group, so that the grinding unit can be quickly moved to the desired grinding position. The grinding device is simple to operate and has high precision. It can efficiently handle the physical height difference of the contact rail along the line direction, ensure the smoothness of the current receiving surface of the contact rail, and improve the stability of the shoe rail coupling.

[0066] Please refer to Figures 1 to 7 This embodiment provides a grinding device 100 for grinding a contact rail 200. Specifically, in one embodiment, the grinding device 100 is a grinding device for a side current receiving contact rail.

[0067] The grinding device 100 includes a base 10, a mounting arm assembly 20, and a grinding mechanism 30. The mounting arm assembly 20 is rotatably mounted on the base 10, that is, the mounting arm assembly 20 is mounted on the base 10 and can rotate relative to the base 10.

[0068] The grinding mechanism 30 includes a mounting member 31, a grinding unit 32, and a drive unit 33. The mounting member 31 is mounted on the mounting arm assembly 20, so that the mounting member 31 can be moved by rotating the mounting arm assembly 20 relative to the base 10. The grinding unit 32 is mounted on the mounting member 31. The drive unit 33 is mounted on the mounting member 31 and connected to the grinding unit 32 to drive the grinding unit 32. In other words, the drive unit 33 is the power source of the grinding unit 32, and can be used to drive the grinding unit 32 to grind the contact rail 200.

[0069] It is understandable that the contact rail system is the carrier for maglev trains to obtain electrical energy, and the smoothness of its current-receiving surface is key to the stable current collection of maglev trains. However, the tools used in the existing technology for grinding contact rails are difficult to achieve fast and accurate grinding of contact rails.

[0070] The grinding device 100 provided in this embodiment can rapidly move the grinding unit 32 via the mounting arm assembly 20, allowing the grinding unit 32 to quickly move to a desired grinding position, and then drive the grinding unit 32 to perform grinding via the drive unit 33. The grinding device 100 is simple to operate and highly precise, and can efficiently address the physical height differences of the contact rail along the line direction, ensuring a smooth current-collecting surface of the contact rail and improving the stability of the shoe-rail coupling.

[0071] Specifically, in one embodiment, the base 10 may adopt any structure capable of rotation in the prior art, such as a slewing bearing, and the mounting arm assembly 20 may be mounted on a rotating platform of the base 10, so that the mounting arm assembly 20 can be rotated relative to a fixed portion of the base 10 to adjust its position. More specifically, in one embodiment, a base handle 11 may be provided on the base 10, and by manipulating the base handle 11, the mounting arm assembly 20 can be driven to rotate in a circular manner to adjust its position, thereby manually adjusting the mounting arm assembly 20.

[0072] Preferably, in one embodiment, the mounting arm assembly 20 includes a rotating table 21, a first connecting arm 22, a second connecting arm 23, and a telescopic unit 24. The rotating table 21 and the base 10 are spaced apart from each other, and the rotating table 21 and the base 10 are parallel to each other. The two ends of the first connecting arm 22 are respectively hinged to the base 10 and the rotating table 21. The two ends of the second connecting arm 23 are respectively hinged to the base 10 and the rotating table 21, and the second connecting arm 23 and the first connecting arm 22 are parallel to each other. The two ends of the telescopic unit 24 are respectively hinged to the base 10 and the first connecting arm 22. In other words, the base 10, the rotating table 21, the first connecting arm 22, and the second connecting arm 23 together constitute a parallelogram mechanism, and the upward and downward movement of the rotating table 21 parallel to the reference plane can be achieved through the extension and retraction of the telescopic unit 24. The mounting member 31 is mounted on the rotating table 21 , that is, in this embodiment, the mounting member 31 is specifically mounted on the rotating table 21 in the mounting arm assembly 20 , so that the position of the grinding unit 32 can be adjusted accordingly by changing the position of the rotating table 21 .

[0073] Specifically, in one embodiment, the telescopic unit 24 may be an oil cylinder. Of course, in other embodiments, the telescopic unit 24 may also be any other telescopic structure, such as an electric cylinder, a pneumatic cylinder, etc.

[0074] Preferably, in one embodiment, the mounting arm assembly 20 further includes a rotating flange 25 and a rotating drive mechanism 26. The rotating flange 25 can be rotatably mounted on the rotating table 21. The rotating drive mechanism 26 is mounted on the rotating table 21 and connected to the rotating flange 25, so as to drive the rotating flange 25 to rotate relative to the rotating table 21. The mounting member 31 is mounted on the rotating flange 25, that is, in this embodiment, the mounting member 31 is specifically mounted on the rotating flange 25 in the mounting arm assembly 20, so that the position of the grinding unit 32 can be adjusted accordingly by changing the position of the rotating flange 25. By driving the rotating flange 25 to rotate relative to the rotating table 21 through the rotating drive mechanism 26, the grinding mechanism 30 can be finely adjusted in rotation, making the grinding device 100 more flexible and better ensuring that the grinding unit 32 can be accurately moved to the required grinding position.

[0075] Specifically, in one embodiment, the rotation drive mechanism 26 may adopt a motor with a reducer.

[0076] Preferably, in one embodiment, the mounting member 31 is mounted on the mounting arm assembly 20 via a connecting mechanism 40. The connecting mechanism 40 is provided with a transverse movement mechanism 41, and the mounting member 31 is mounted on a movable unit 411 of the transverse movement mechanism 41. That is, in this embodiment, the mounting member 31 is indirectly connected to the mounting arm assembly 20, with the connecting mechanism 40 further provided between the mounting member 31 and the mounting arm assembly 20. Furthermore, the mounting member 31 is specifically mounted on the movable unit 411 in the connecting mechanism 40. The transverse movement of the movable unit 411 can correspondingly adjust the position of the grinding mechanism 30, thereby further ensuring that the grinding unit 32 can accurately move to the desired grinding position.

[0077] Specifically, in one embodiment, the transverse movement mechanism 41 may include a screw rod 412 and a screw nut 413 mounted on the screw rod 412. The movable unit 411 is mounted on the screw nut 413. By rotating the screw rod 412, the screw nut 413 can be driven to move linearly, thereby driving the movable unit 411 to move linearly, thereby adjusting the position of the grinding mechanism 30. More specifically, in one embodiment, a handle is connected to the screw rod 412. By manipulating the handle, the screw rod 412 can be driven to operate, thereby adjusting the position of the screw nut 413, and the transverse movement mechanism 41 is driven and adjusted in a manually adjustable manner.

[0078] Specifically, in one embodiment, a guide rail may be further provided on the connecting mechanism 40, and the mobile unit 411 may be slidably connected to the guide rail via a slider, so that the mobile unit 411 can be better guided during the movement of the mobile unit 411.

[0079] More preferably, in one embodiment, the connecting mechanism 40 is further provided with an F-rail positioning unit 42, and the F-rail positioning unit 42 includes at least an F-rail top surface positioning plate 421 and an F-rail side surface positioning plate 422. The F-rail top surface positioning plate 421 is used to abut against the top surface of the F-rail, and the F-rail side surface positioning plate 422 is used to abut against the side surface of the F-rail. When the grinding device 100 is in use, the position of the connecting mechanism 40 can be adjusted first by the mounting arm assembly 20, so that the F-rail top surface positioning plate 421 on the connecting mechanism 40 abuts against the top surface of the F-rail, and the F-rail side surface positioning plate 422 abuts against the side surface of the F-rail, thereby adjusting the position of the grinding mechanism 30 with the F-rail as the reference point, which can further improve the accuracy of the position adjustment of the grinding mechanism 30 and reduce the difficulty of the position adjustment of the grinding mechanism 30.

[0080] Specifically, in one embodiment, the connecting mechanism 40 is connected to the rotating flange 25 .

[0081] Preferably, in one embodiment, the mounting member 31 includes a fixed plate 311 and a movable plate 312. The fixed plate 311 is connected to the mounting arm assembly 20, and the movable plate 312 is movably connected to the fixed plate 311. The grinding unit 32 and the driving unit 33 are mounted on the movable plate 312. Since the movable plate 312 is movably connected to the fixed plate 311, the grinding unit 32 and the driving unit 33 are mounted on the movable plate 312, so that by adjusting the position of the movable plate 312 relative to the fixed plate 311, the positions of the grinding unit 32 and the driving unit 33 can be adjusted accordingly, so that the grinding unit 32 can be moved to the desired grinding position more accurately.

[0082] Specifically, in one embodiment, the fixed plate 311 is connected to the moving unit 411 .

[0083] Preferably, in one embodiment, the movable plate 312 is movably connected to the fixed plate 311 through a movable unit group 313. The movable unit group 313 includes a moving rod 3131, a first balance rod 3132, a second balance rod 3133, and a movable plate telescopic unit 3134. The moving rod 3131 and the fixed plate 311 are spaced apart from each other, and the moving rod 3131 and the fixed plate 311 are parallel to each other. The two ends of the first balance rod 3132 are hinged to the fixed plate 311 and the moving rod 3131, respectively. The two ends of the second balance rod 3133 are hinged to the fixed plate 311 and the moving rod 3131, respectively, and the second balance rod 3133 and the first balance rod 3132 are parallel to each other. The two ends of the movable plate telescopic unit 3134 are hinged to the fixed plate 311 and the movable plate 312, respectively. The movable plate 312 is mounted on the movable rod 3131. That is, in this embodiment, the movable plate 312 is specifically mounted on the movable rod 3131 in the movable unit group 313. The movable plate 312 can be driven to move by the movable rod 3131. In this embodiment, the fixed plate 311, the movable rod 3131, the first balance rod 3132, and the second balance rod 3133 together form a parallelogram mechanism. The movable plate telescopic unit 3134 can be extended and retracted to achieve movement of the movable plate 312 relative to the fixed plate 311, thereby achieving stable adjustment of the position of the movable plate 312.

[0084] Preferably, in one embodiment, the mounting member 31 is provided with a contact rail abutment positioning unit assembly 314. The contact rail abutment positioning unit assembly 314 includes a rail body top surface positioning plate 3141, a rail body front surface positioning plate 3142, and a rail body back surface clamping unit 3143. The rail body top surface positioning plate 3141 is used to abut against the top surface 210 of the contact rail 200, and the rail body front surface positioning plate 3142 is used to abut against the front surface 220 of the contact rail 200. The rail body back surface clamping unit 3143 includes a clamping transmission member 3144, a clamping pad 3145, and a clamping drive member 3146. The clamping transmission member 3144 is movably disposed on the mounting member 31, and the clamping pad 3145 is disposed on the clamping transmission member 3144. The clamping drive member 3146 is connected to the clamping transmission member 3144 to drive the clamping transmission member 3144 to operate so that the clamping pad 3145 abuts against the back surface 230 of the contact rail 200. When the grinding device 100 is in use, the position of the mounting member 31 can be adjusted so that the rail body top surface positioning plate 3141 abuts against the top surface 210 of the contact rail 200 and the rail body front surface positioning plate 3142 abuts against the front surface 220 of the contact rail 200. At the same time, the clamping drive member 3146 drives the clamping transmission member 3144 so that the clamping pad 3145 abuts against the back surface 230 of the contact rail 200. This ensures that the contact rail 200 is stably clamped, prepares for the grinding unit 32 to perform grinding, and ensures a good grinding effect.

[0085] Specifically, in one embodiment, the contact rail abutting positioning unit 314 is provided on the fixing plate 311 .

[0086] Preferably, in one embodiment, the clamping transmission member 3144 includes a clamping support rod 31441, a positioning clamping rod 31442, and a clamping balance rod 31443. One end of the clamping support rod 31441 is hinged to the clamping drive member 3146, and the other end of the clamping support rod 31441 is hinged to one end of the positioning clamping rod 31442. The middle portion of the clamping support rod 31441 is hinged to the mounting member 31. The other end of the positioning clamping rod 31442 is mounted with the clamping pad 3145. One end of the clamping balance rod 31443 is hinged to the mounting member 31, and the other end of the clamping balance rod 31443 is hinged to the middle portion of the positioning clamping rod 31442. When the grinding device 100 is in use, the clamping drive 3146 drives the clamping support rod 31441 to operate, thereby driving the positioning clamping rod 31442 to operate, so that the clamping pad 3145 is tightly attached to the back side 230 of the contact rail 200, thereby clamping the contact rail 200.

[0087] Specifically, in one embodiment, the clamping drive 3146 may adopt a linear telescopic unit, such as an oil cylinder, an air cylinder, an electric cylinder, etc.

[0088] Preferably, in one embodiment, the grinding unit 32 includes a driving wheel 321, a driven wheel 322, and a grinding belt 323. The driving wheel 321 is connected to the driving unit 33. The driven wheel 322 is rotatably mounted on the mounting member 31 and spaced apart from the driving wheel 321. The grinding belt 323 is disposed around the driving wheel 321 and the driven wheel 322. The driving unit 33 drives the driving wheel 321 to operate, thereby driving the grinding belt 323 to operate. The grinding belt 323 contacts the contact rail 200, thereby grinding the contact rail 200.

[0089] Specifically, in one embodiment, the driving unit 33 may be a motor.

[0090] The grinding mechanism 30 also includes a sanding belt tensioning unit group 34, which includes a tensioning wheel 341 and an elastic support unit 342. The tensioning wheel 341 is located between the driving wheel 321 and the driven wheel 322, and is located in the space surrounded by the sanding belt 323. The two ends of the elastic support unit 342 are respectively connected to the mounting member 31 and the tensioning wheel 341, so that the tensioning wheel 341 tensions the sanding belt 323. In this embodiment, the elastic support unit 342 provides an initial force, so that the tensioning wheel 341 supports the sanding belt 323, realizing the tensioning function, thereby ensuring the sanding effect of the sanding belt 323.

[0091] Specifically, in one embodiment, the elastic support unit 342 adopts a gas spring cylinder.

[0092] Preferably, in one embodiment, the grinding mechanism 30 further includes a connecting rod 35, one end of which is hinged to the movable plate 312. The tensioning wheel 341 is disposed on the connecting rod 35. More preferably, in one embodiment, the connecting rod 35 is provided with an adjustment hinge 36, which can be used to adjust the centering of the grinding belt 323. More preferably, in one embodiment, the connecting rod 35 is provided with a pressing handle 37. When replacing the grinding belt 323, the grinding belt 323 can be quickly replaced by simply pressing the pressing handle 37 downward.

[0093] In one embodiment, a grinding system 1000 is provided, which includes a work positioning trolley 300 and the grinding device 100, and the base 10 is mounted on the work positioning trolley 300. When the contact rail 200 needs to be ground, the work positioning trolley 300 can be placed on the F rail 400.

[0094] The above is only an embodiment of the present invention. It should be pointed out that those skilled in the art can make improvements without departing from the inventive concept of the present invention, but these improvements are all within the scope of protection of the present invention.

Claims

1. A grinding device, characterized in that: Includes base, mounting arm assembly, and grinding mechanism; The mounting arm assembly can be rotatably mounted on the base; The grinding mechanism includes a mounting part, a grinding unit and a driving unit; The mounting member is mounted on the mounting arm assembly; The polishing unit is mounted on the mounting member; The driving unit is mounted on the mounting member and connected to the grinding unit to drive the grinding unit to operate.

2. The grinding device according to claim 1, characterized in that: The mounting arm assembly includes a rotating platform, a first connecting arm, a second connecting arm, and a telescopic unit; The rotating platform and the base are spaced apart from each other, and the rotating platform and the base are parallel to each other; The two ends of the first connecting arm are hinged to the base and the rotating platform respectively; Two ends of the second connecting arm are hinged to the base and the rotating platform respectively, and the second connecting arm is parallel to the first connecting arm; Both ends of the telescopic unit are hinged to the base and the first connecting arm respectively; The mounting member is mounted on the rotating platform.

3. The grinding device according to claim 2, characterized in that: The mounting arm assembly further includes a rotating flange and a rotating drive mechanism; The rotating flange can be rotatably mounted on the rotating platform; The rotation drive mechanism is mounted on the rotating platform and connected to the rotating flange, so as to drive the rotating flange to rotate relative to the rotating platform; The mounting member is mounted on the rotating flange.

4. The grinding device according to claim 1, characterized in that: The mounting member is mounted on the mounting arm assembly via a connecting mechanism, a transverse movement mechanism is provided on the connecting mechanism, and the mounting member is mounted on a moving unit of the transverse movement mechanism; The connecting mechanism is also provided with an F-rail positioning unit, which includes at least an F-rail top surface positioning plate and an F-rail side surface positioning plate. The F-rail top surface positioning plate is used to abut against the top surface of the F-rail, and the F-rail side surface positioning plate is used to abut against the side surface of the F-rail.

5. The grinding device according to claim 1, characterized in that: The mounting member includes a fixed plate and a movable plate, the fixed plate is connected to the mounting arm assembly, and the movable plate is movably connected to the fixed plate; The polishing unit and the driving unit are both installed on the movable plate.

6. The grinding device according to claim 5, characterized in that: The movable plate is movably connected to the fixed plate through a movable unit group, and the movable unit group includes a moving rod, a first balance rod, a second balance rod, and a movable plate telescopic unit; The movable rod and the fixed plate are spaced apart from each other, and the movable rod and the fixed plate are parallel to each other; The two ends of the first balancing rod are hinged to the fixed plate and the moving rod respectively; Two ends of the second balancing pole are hinged to the fixed plate and the movable pole respectively, and the second balancing pole is parallel to the first balancing pole; The two ends of the movable plate telescopic unit are hinged to the fixed plate and the movable plate respectively; The movable plate is installed on the moving rod.

7. The grinding device according to claim 1, characterized in that: The mounting member is provided with a contact rail abutment positioning unit group, and the contact rail abutment positioning unit group includes a rail body top surface positioning plate, a rail body front surface positioning plate and a rail body back surface clamping unit; The rail body top surface positioning plate is used to abut against the top surface of the contact rail; The rail body front positioning plate is used to abut against the front of the contact rail; The rail body back clamping unit includes a clamping transmission part, a clamping pad and a clamping drive part; The clamping transmission member is movably arranged on the mounting member; The clamping pad is arranged on the clamping transmission member; The clamping drive member is connected to the clamping transmission member and is used to drive the clamping transmission member to operate so that the clamping pad is pressed against the back side of the contact rail.

8. The grinding device according to claim 7, characterized in that: The clamping transmission member includes a clamping support rod, a positioning clamping rod, and a clamping balance rod; One end of the clamping support rod is hinged to the clamping drive member, and the other end is hinged to one end of the positioning clamping rod, and the middle part of the clamping support rod is hinged to the mounting member; The other end of the positioning clamping rod is equipped with the clamping pad; One end of the clamping balance rod is hinged to the mounting piece, and the other end is hinged to the middle part of the positioning clamping rod.

9. The grinding device according to claim 1, characterized in that: The grinding unit includes a driving wheel, a driven wheel, and a grinding belt; The driving wheel is connected to the driving unit; The driven wheel is rotatably mounted on the mounting member and is spaced apart from the driving wheel; The grinding belt is arranged around the driving wheel and the driven wheel; The grinding mechanism further includes a sanding belt tensioning unit group, and the sanding belt tensioning unit group includes a tensioning wheel and an elastic support unit; The tensioning wheel is located between the driving wheel and the driven wheel, and is located in the space surrounded by the grinding belt; The two ends of the elastic support unit are respectively connected to the mounting member and the tensioning wheel, so that the tensioning wheel can tension the grinding belt.

10. A grinding system, characterized in that: It comprises an operation positioning trolley and the grinding device according to any one of claims 1 to 9, wherein the base is installed on the operation positioning trolley.

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