Segmented orbital side mill

Abstract

The application discloses a sectional track side grinding machine, which comprises a rack, a moving device and a grinding device installed on the rack, wherein the moving device is connected with the grinding device and drives the grinding device to move, the grinding device comprises driving devices and grinding assemblies which are connected with each other, the grinding assemblies comprise upper grinding assemblies corresponding to upper parts of rail waists, middle grinding assemblies corresponding to middle parts of the rail waists and lower grinding assemblies corresponding to bottom parts of the rail waists, and the upper grinding assemblies, the middle grinding assemblies and the lower grinding assemblies are arranged in pairs on both sides of the rail waists respectively and along the length direction of the rail. The grinding assemblies are arranged in a sectional structure corresponding to different parts of the rail waists, so that the comprehensive grinding of the rail waists can be ensured, and the repeated grinding of the rail waists can be completed without adjusting the grinding assemblies during the grinding process, thereby improving the grinding efficiency.

Description

Technical Field

[0001] This invention relates to a segmented rail side grinder, belonging to the field of rail grinding technology. Background Technology

[0002] Rail grinding refers to the process of using a grinding device to polish the rail surface and remove the fatigue metal layer. During the laying of urban rail tracks, adjacent rails are connected by welding, resulting in bulges and depressions at the weld joints. These defects affect the smoothness of track operation and its service life to varying degrees. Therefore, pre-grinding is necessary to remove the decarburized layer and smooth out unevenness, making the rail web section flatter, optimizing the rail profile, and increasing its service life.

[0003] Currently, rail pre-grinding both domestically and internationally mainly targets the portion of the rail that directly contacts the train, while the automation level of rail web grinding is relatively low. Typically, workers use handheld grinders or push-type grinders to grind the rail web. This method requires highly experienced workers, results in inconsistent grinding quality, high labor intensity, low efficiency, and high risk. Typically, workers need to use handheld grinders or push-type grinders to grind the rail web. During the grinding process, workers need to repeatedly check the weld height with a chord line and then check the smoothness of the rail surface with a ruler, marking the grinding area. This method requires highly experienced workers, results in inconsistent grinding quality, high labor intensity, low efficiency, and high risk.

[0004] In actual track cross-sectional diagrams, the side of the rail is not composed of a single plane, but rather of several arcs with varying curvatures. Existing automated rail web grinding systems use a single grinding wheel to grind the rail web. For arc surfaces with different curvatures, the grinding wheel position needs to be adjusted before grinding, requiring constant adjustments during the grinding process. This reduces grinding efficiency, prevents comprehensive grinding of the rail web, and results in low grinding quality. Summary of the Invention

[0005] Purpose of the invention: To address the shortcomings of existing technologies, this invention provides a segmented rail side grinding machine. By setting up an upper grinding component, a middle grinding component, and a lower grinding component to perform comprehensive grinding on the upper, middle, and lower parts of the rail web, this invention improves the grinding quality and efficiency of the rail web.

[0006] Technical solution: A segmented track-side grinding machine, comprising a frame, a moving device mounted on the frame, and a grinding device, wherein the moving device is connected to the grinding device and drives the grinding device to move. The grinding device includes a drive device and a grinding assembly connected to each other. The grinding assembly includes an upper grinding assembly corresponding to the upper part of the rail web, a middle grinding assembly corresponding to the middle part of the rail web, and a lower grinding assembly corresponding to the bottom of the rail web. The upper grinding assembly, middle grinding assembly, and lower grinding assembly are respectively arranged in pairs on both sides of the rail web and are arranged along the length of the rail. The upper grinding assembly, middle grinding assembly, and lower grinding assembly all include a grinding part.

[0007] This invention provides an upper grinding component, a middle grinding component, and a lower grinding component, corresponding to the upper, middle, and lower parts of the rail web, respectively, and arranged along the length of the rail. During grinding, the upper, middle, and lower grinding components simultaneously and repeatedly grind the rail web. Since the upper, middle, and lower grinding components cover the entire grinding surface of the rail web, comprehensive grinding of the rail web can be achieved, improving grinding quality. At the same time, because the upper, middle, and lower grinding components grind simultaneously, there is no need to adjust the position of the grinding components midway, thus improving grinding efficiency.

[0008] In a preferred embodiment, to make the grinding component easy to replace and to improve the grinding effect, the grinding part is a grinding wheel.

[0009] In a preferred embodiment, to provide support for the drive unit and the grinding assembly, the grinding device further includes a mounting bracket, on which the drive unit and the grinding assembly are respectively mounted.

[0010] In a preferred embodiment, to achieve repeated grinding of the rail web, the moving device includes a moving motor, a lead screw, and a moving slider. The moving slider is engaged with the lead screw and fixedly connected to the grinding assembly. The moving motor is connected to the lead screw. The moving motor drives the lead screw to rotate, and the moving slider drives the grinding assembly to move along the lead screw as it rotates. By using the forward and reverse moving motors, the reciprocating motion of the grinding assembly is achieved, thereby realizing repeated grinding of the rail web and improving the grinding quality.

[0011] In a preferred embodiment, to provide driving force to the grinding assembly, the driving device includes a drive motor and a transmission device interconnected. The transmission device includes a drive shaft, a meshing drive gear and a driven gear. The drive gear is connected to the drive motor, and the driven gear drives the grinding assembly via the drive shaft. The drive motor drives the drive gear to rotate, which in turn drives the driven gear to rotate. The driven gear then drives the drive shaft to rotate, and the drive shaft drives the grinding assembly to rotate.

[0012] In a preferred embodiment, to improve grinding quality, the grinding device further includes a clamping assembly connected to the grinding component. The clamping assembly includes a clamping part, a cylinder mechanism, and a connecting plate. One end of the clamping part is connected to the cylinder mechanism, and the other end is hinged to the connecting plate and the mounting bracket. The clamping part has a through hole that connects to the drive shaft. The cylinder mechanism drives the clamping part to clamp the grinding component onto the track, ensuring that the grinding component and the track are in close contact throughout the grinding process, guaranteeing the grinding depth each time and improving grinding quality.

[0013] In a preferred embodiment, to provide driving force to the grinding components, the upper, middle, and lower grinding components have identical structures, each including a pressure wheel. The grinding part is an abrasive belt, and the pressure wheel presses the abrasive belt along the rail web for grinding. The driving device includes a drive motor, a drive wheel, a driven wheel, and a tension wheel, all located on one side of the rail. The drive motor is connected to the drive wheel. The drive wheel, driven wheel, and tension wheel respectively contact the abrasive belt and drive its movement. The driving devices are arranged in pairs. After the drive motor starts, it drives the drive wheel to rotate, which in turn drives the driven wheel and tension wheel to rotate. Consequently, the abrasive belt is rotated. The abrasive belt is positioned between the side of the pressure wheel and the outer side of the rail web. As the pressure wheel moves, the abrasive belt rubs and grinds against the rail web. The tension wheel can adjust the tension of the abrasive belt to further improve the grinding quality.

[0014] In a preferred embodiment, to achieve repeated grinding of the rail web, the moving device includes a moving motor and a mounting base. The mounting base is equipped with a slide rail, and the moving motor and the slide rail are movably connected. The moving motor moves along the slide rail. The moving motor and the slide rail can be movably connected via a rack and pinion mechanism. When the moving motor starts, it moves along the slide rail, and as the moving motor switches between forward and reverse rotation, it drives the grinding components to repeatedly grind on the track, improving the grinding quality.

[0015] In a preferred embodiment, to improve grinding quality, the grinding device further includes a clamping assembly connected to a moving motor. The clamping assembly includes paired mounting portions, a spring positioned between the mounting portions, and an X-shaped hinged connecting frame. The pressure roller is mounted on the mounting portion. The preload of the spring ensures a tight fit between the pressure roller and the rail web throughout the entire movement. Furthermore, the grinding device can be installed after opening the hinged connecting frame, adapting to different rail sizes and improving grinding quality.

[0016] In a preferred embodiment, to improve grinding quality, a frame clamping device is installed on the frame. This device includes grippers, a worm gear assembly, and an adjusting part, with the worm gear assembly connected to both the grippers and the adjusting part. By clamping the track with the frame clamping device, a stable connection between the side grinder and the track is ensured during grinding, while also guaranteeing precise grinding position positioning. This ensures that the grinding direction corresponds to and is flush with the directions of various parts of the track web, thereby improving grinding quality.

[0017] Beneficial effects: By setting the grinding components in a segmented structure corresponding to different parts of the rail web, this invention not only ensures comprehensive grinding of the rail web, but also allows for repeated grinding of the rail web without the need for adjustment of the grinding components during the grinding process, thus improving grinding efficiency. Furthermore, to further improve grinding quality, a frame clamping device is provided to ensure that the grinding device is flush with the grinding surface of the rail web, ensuring precise grinding position. At the same time, the clamping components ensure that the grinding components are in close contact with the rail web throughout the entire process, improving grinding quality. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is a structural diagram of the first embodiment of the present invention; Figure 2 This is a structural diagram of the mounting bracket according to the first embodiment of the present invention; Figure 3 This is a structural diagram of the driving device and grinding assembly according to the first embodiment of the present invention; Figure 4 This is a structural diagram of the clamping assembly according to the first embodiment of the present invention; Figure 5 This is a structural diagram of the second embodiment of the present invention; Figure 6 This is a structural diagram of a mobile device according to a second embodiment of the present invention; Figure 7 This is a structural diagram of the clamping assembly and pressure wheel according to a second embodiment of the present invention; Figure 8 These are structural diagrams of the frame clamping device according to the first and second embodiments of the present invention; Figure 9 This is a structural diagram of the lifting mechanism according to the second embodiment of the present invention. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] like Figure 1 , Figure 5 and Figure 7 As shown, a segmented track-side grinding machine includes a frame 1, a moving device 2 mounted on the frame 1, and a grinding device 3. The moving device 2 is connected to the grinding device 3 and drives the grinding device 3 to move. The grinding device 3 includes a drive device 31 and a grinding assembly 32 connected to each other. The grinding assembly 32 includes an upper grinding assembly 321 corresponding to the upper part of the rail web, a middle grinding assembly 322 corresponding to the middle part of the rail web, and a lower grinding assembly 323 corresponding to the bottom of the rail web. The upper grinding assembly 321, the middle grinding assembly 322, and the lower grinding assembly 323 are respectively arranged in pairs on both sides of the rail web and are arranged along the length of the track 4. The upper grinding assembly 321, the middle grinding assembly 322, and the lower grinding assembly 323 all include a grinding part 324.

[0024] By setting up upper grinding components 321, middle grinding components 322, and lower grinding components 323 corresponding to the upper, middle, and lower parts of the rail web respectively, and setting them along the length of the rail 4, during grinding, the upper grinding components 321, middle grinding components 322, and lower grinding components 323 simultaneously and repeatedly grind the rail web. Since the upper grinding components 321, middle grinding components 322, and lower grinding components 323 exactly cover the entire grinding surface of the rail web, comprehensive grinding of the rail web can be achieved, improving the grinding quality. At the same time, since the upper grinding components 321, middle grinding components 322, and lower grinding components 323 grind simultaneously, there is no need to adjust the position of the grinding components 32 in the middle, thus improving the grinding efficiency. Example

[0025] like Figure 1 As shown, in order to make the grinding component 32 easy to replace and the grinding effect better, the grinding part 324 is a grinding wheel.

[0026] like Figure 2 As shown, in order to provide support for the drive device 31 and the polishing assembly 32, the polishing device 3 also includes a mounting bracket 33, on which the drive device 31 and the polishing assembly 32 are respectively mounted.

[0027] To achieve repeated grinding of the rail web, the moving device 2 includes a moving motor 21, a lead screw 22, and a moving slider 23. The moving slider 23 is engaged with the lead screw 22 and fixedly connected to the grinding assembly 32. The moving motor 21 is connected to the lead screw 22. The moving motor 21 drives the lead screw 22 to rotate, and the moving slider 23 drives the grinding assembly 32 to move along the lead screw 22 as it rotates. By reversing the moving motor 21, the grinding assembly 32 can reciprocate, thereby achieving repeated grinding of the rail web and improving the grinding quality.

[0028] like Figure 3 As shown, to provide driving force to the grinding assembly 32, the driving device 31 includes a drive motor 311 and a transmission device 312 connected to each other. The transmission device 312 includes a transmission shaft 3121, a meshing drive gear 3122, and a driven gear 3123. The drive gear 3122 is connected to the drive motor 311, and the driven gear 3123 drives the grinding assembly 32 through the transmission shaft 3121. The drive motor 311 drives the drive gear 3122 to rotate, the drive gear 3122 drives the driven gear 3123 to rotate, and then the driven gear 3123 drives the transmission shaft 3121 to rotate, which in turn drives the grinding assembly 32 to rotate. Simultaneously, to prevent adjacent grinding assemblies 32 from being too close and easily interfering with each other, a universal coupling is installed on the transmission shaft 3121 to ensure that adjacent grinding assemblies 32 are not too close and thus do not interfere with each other.

[0029] like Figure 4 As shown, to improve the polishing quality, the polishing device 3 further includes a clamping assembly 34 connected to the polishing component 32. The clamping assembly 34 includes a clamping part 341, a cylinder mechanism 342, and a connecting plate 343. One end of the clamping part 341 is connected to the cylinder mechanism 342, and the other end is hinged to the connecting plate 343 and the mounting bracket 33. The clamping part 341 has a through hole 3412 that is connected to the drive shaft 3121. The cylinder mechanism 342 drives the clamping part 341 to drive the polishing component 32 to clamp the track 4, so that the polishing component 32 and the track web are in full contact during the polishing process, ensuring the polishing depth each time and improving the polishing quality. Example

[0030] like Figure 5 As shown, in order to provide driving force to the grinding assembly 32, the upper grinding assembly 321, the middle grinding assembly 322, and the lower grinding assembly 323 have the same structure, and each also includes a pressure wheel 325. The grinding part 324 is a sanding belt. The pressure wheel 325 presses the sanding belt to grind along the rail web. The driving device 31 includes a driving motor 311, a driving wheel 313, a driven wheel 314, and a tension wheel 315 arranged on one side of the track 4. The driving motor 311 is connected to the driving wheel 313. The driving wheel 313, the driven wheel 314, and the tension wheel 315 respectively contact the sanding belt and drive the sanding belt to move. The driving devices 31 are arranged in pairs. After the drive motor 311 starts, it drives the drive wheel 313 to rotate. The drive wheel 313 drives the driven wheel 314 and the tension wheel 315 to rotate, and thus the sanding belt is driven to rotate. The sanding belt is set between the side of the pressure wheel 325 and the outer side of the rail web. As the pressure wheel 325 moves, the sanding belt rubs and polishes on the rail web. The tension wheel 315 can adjust the tension of the sanding belt to further improve the polishing quality.

[0031] like Figure 5 and Figure 6 As shown, to achieve repeated grinding of the rail web, the moving device 2 includes a moving motor 21 and a mounting base 24. The mounting base 24 is equipped with a slide rail 25. The moving motor 21 and the slide rail 25 are movably connected, and the moving motor 21 moves along the slide rail 25. The moving motor 21 and the slide rail 25 can be movably connected via a gear and rack. When the moving motor 21 is started, it moves along the slide rail 25, and as the moving motor 21 switches between forward and reverse rotation, it drives the grinding assembly 32 to repeatedly grind on the track 4, improving the grinding quality.

[0032] like Figure 7 As shown, to improve the grinding quality, the grinding device 3 also includes a clamping assembly 34 connected to the moving motor 21. The clamping assembly 34 includes a pair of mounting parts 344, a spring 345 disposed between the mounting parts 344, and an X-shaped hinged connecting frame 346. The pressure wheel 325 is disposed on the mounting part 344. The preload of the spring 345 ensures that the pressure wheel 325 is in close contact with the rail web throughout the entire process. At the same time, the grinding device 3 can be installed after the hinged connecting frame 346 is opened according to different sizes of the rail 4, which not only adapts to different sizes of the rail 4 but also improves the grinding quality. At this time, the pressure wheel 325 only has a clamping function.

[0033] like Figure 8As shown, to improve grinding quality, a frame clamping device 11 is installed on the frame 1. The frame clamping device 11 includes grippers 111, a worm gear assembly 112, and an adjusting part 113. The worm gear assembly 112 is connected to the grippers 111 and the adjusting part 113, respectively. By clamping the track 4 with the frame clamping device 11, the connection between the side grinder and the track 4 can be made stable during the grinding process. At the same time, it ensures accurate positioning of the grinding position, making the grinding direction correspond to and be level with the directions of each part of the track web, thereby improving the grinding quality.

[0034] like Figure 9 As shown, in order to further ensure that the slide rail 25 and the track 4 are level, lifting mechanisms 5 are set on both sides of the slide rail 25. By adjusting the lifting mechanisms 5 on both sides, the slide rail 25 and the upper surface of the track 4 can be kept level. Alternatively, telescopic and adjustable support legs can be set on the frame 1 to adjust the overall horizontal position of the frame 1. like Figure 5 As shown, in order to facilitate the grinding of the next section of track 4, rollers 6 are installed on the frame 1. When switching to the next section of track 4, it is not necessary to completely disassemble the side grinder. It is only necessary to separate the grinding part 324 from the track 4 through the lifting mechanism or the support leg of the frame 1. After unlocking the clamping device of the frame 1, the side grinder is pushed along the track 4 to the next section of track 4, which saves time and effort and improves efficiency.

[0035] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section.

[0036] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A segmented track side grinder, comprising a frame (1), a moving device (2) mounted on the frame (1), and a grinding device (3), wherein the moving device (2) is connected to the grinding device (3) and drives the grinding device (3) to move. The grinding device (3) includes a drive device (31) and a grinding assembly (32) connected to each other. The grinding assembly (32) includes an upper grinding assembly (321) corresponding to the upper part of the rail web, a middle grinding assembly (322) corresponding to the middle part of the rail web, and a lower grinding assembly (323) corresponding to the bottom of the rail web. The upper grinding assembly (321), the middle grinding assembly (322), and the lower grinding assembly (323) are respectively arranged in pairs on both sides of the rail web and are arranged along the length direction of the track (4). The upper grinding assembly (321), the middle grinding assembly (322), and the lower grinding assembly (323) all include a grinding part (324). Its features are: The polishing device (3) also includes a mounting bracket (33), and the driving device (31) and polishing assembly (32) are respectively mounted on the mounting bracket (33); The moving device (2) includes a moving motor (21), a lead screw (22) and a moving slider (23). The moving slider (23) is engaged with the lead screw (22) and fixedly connected to the grinding assembly (32). The moving motor (21) is connected to the lead screw (22). The drive device (31) includes a drive motor (311) and a transmission device (312) connected to each other. The transmission device (312) includes a transmission shaft (3121), a drive gear (3122) and a driven gear (3123) meshing with each other. The drive gear (3122) is connected to the drive motor (311), and the driven gear (3123) drives the grinding assembly (32) through the transmission shaft (3121). The grinding device (3) further includes a clamping assembly (34) connected to the grinding assembly (32). The clamping assembly (34) includes a clamping part (341), a cylinder mechanism (342), and a connecting plate (343). One end of the clamping part (341) is connected to the cylinder mechanism (342), and the other end is hinged to the connecting plate (343) and the mounting bracket (33). The clamping part (341) is provided with a through hole (3412) that is connected to the drive shaft (3121).

2. The segmented track-side mill according to claim 1, characterized in that: The grinding part (324) is a grinding wheel.

3. The segmented track-side mill according to claim 2, characterized in that: A frame clamping device (11) is installed on the frame (1). The frame clamping device (11) includes a gripper (111), a worm gear assembly (112), and an adjustment part (113). The worm gear assembly (112) is connected to the gripper (111) and the adjustment part (113) respectively.

4. A segmented track side grinder, comprising a frame (1), a moving device (2) mounted on the frame (1), and a grinding device (3), wherein the moving device (2) is connected to the grinding device (3) and drives the grinding device (3) to move. The grinding device (3) includes a drive device (31) and a grinding assembly (32) connected to each other. The grinding assembly (32) includes an upper grinding assembly (321) corresponding to the upper part of the rail web, a middle grinding assembly (322) corresponding to the middle part of the rail web, and a lower grinding assembly (323) corresponding to the bottom of the rail web. The upper grinding assembly (321), the middle grinding assembly (322), and the lower grinding assembly (323) are respectively arranged in pairs on both sides of the rail web and are arranged along the length direction of the track (4). The upper grinding assembly (321), the middle grinding assembly (322), and the lower grinding assembly (323) all include a grinding part (324). Its features are: The upper grinding assembly (321), the middle grinding assembly (322), and the lower grinding assembly (323) have the same structure and all include a pressure wheel (325). The grinding part (324) is a sanding belt. The pressure wheel (325) presses the sanding belt to grind along the rail web. The driving device (31) includes a driving motor (311), a driving wheel (313), a driven wheel (314), and a tension wheel (315) arranged on one side of the track (4). The driving motor (311) is connected to the driving wheel (313). The driving wheel (313), the driven wheel (314), and the tension wheel (315) respectively contact the sanding belt and drive the sanding belt to move. The driving devices (31) are arranged in pairs. The mobile device (2) includes a mobile motor (21) and a mounting base (24). The mounting base (24) is provided with a slide rail (25). The mobile motor (21) and the slide rail (25) are movably connected, and the mobile motor (21) moves along the slide rail (25). The grinding device (3) further includes a clamping assembly (34) connected to a moving motor (21). The clamping assembly (34) includes a pair of mounting parts (344), a spring (345) disposed between the mounting parts (344), and an X-shaped hinged connecting frame (346). The pressure wheel (325) is disposed on the mounting part (344).

5. The segmented track-side mill according to claim 4, characterized in that: A frame clamping device (11) is installed on the frame (1). The frame clamping device (11) includes a gripper (111), a worm gear assembly (112), and an adjustment part (113). The worm gear assembly (112) is connected to the gripper (111) and the adjustment part (113) respectively.

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