A middle tooth dynamic profiling grinding wheel polishing type rail side grinder

Abstract

The application provides a middle tooth dynamic profiling grinding wheel polishing type rail side grinding machine, which comprises a rack and a servo motor installed on the rack, a polishing part for polishing a rail waist is arranged at the output end of the servo motor, the polishing part comprises a disc-shaped profiling grinding wheel and a cylindrical profiling grinding wheel, the disc-shaped profiling grinding wheel is inwardly inclined, and the disc-shaped profiling grinding wheel is fixed in angle with a gear box through a fixed connection grinding wheel shaft fixing part. Advantageous effects: the polishing mode selected by the application is single-side double-profiling grinding wheel polishing, which can ensure polishing efficiency and accuracy, and can control the number of grinding wheels to reduce the weight and volume of the polishing unit, the interference problem of the grinding wheel with a rail bottom connecting part during polishing is solved through the inclined arrangement of the disc-shaped profiling grinding wheel, the interference of the rail bottom connecting part from the spatial angle is avoided, and continuous polishing is realized.

Description

Technical Field

[0001] This invention relates to a rail side grinding machine, specifically a rail side grinding machine with a centrally located toothed, contour grinding wheel, belonging to the field of rail grinding technology. Background Technology

[0002] Rail grinding is a crucial step in the maintenance and repair of rails. Rail grinding involves using specific machinery and tools to polish the rail surface, eliminating unevenness, defects, and cracks, thereby improving its smoothness and finish. This technology not only extends the service life and safety of rails but also enhances the efficiency and stability of railway transportation. Therefore, the research and application of rail grinding technology have significant practical value. Furthermore, rail grinding is a multidisciplinary field, involving knowledge and techniques from mechanical engineering, materials science, and control technology. Researching rail grinding technology can also promote the development and progress of these disciplines.

[0003] Rail grinding technology primarily refers to using grinding tools such as abrasive wheels and belts to grind away surface materials on the rails. This repairs damaged rail surfaces, restores the rail profile, removes weld marks, and eliminates surface rust and other adverse factors, thereby preventing further damage to the rail surface. Currently, rail grinding equipment is the most convenient and effective method for removing rust, scale-like patterns, and scratches from rails. Rail grinding not only extends the service life of rails but also ensures railway operation safety and reduces railway operating costs.

[0004] Compared to grinding the top surface of the rail, the rail web has a more complex profile, consisting of multiple curved sections. Furthermore, the presence of fastening bolts places complex requirements on the shape and installation position of the grinding mechanism. This makes traditional grinding mechanisms ill-suited for rust removal and weld grinding along the entire rail surface. Summary of the Invention

[0005] Purpose of the invention: To address the shortcomings of existing technologies, this invention provides a rail side grinder with a centrally located toothed profile grinding wheel. By setting the dimensions of the two profile grinding wheels and the angle of the disc-shaped profile grinding wheel, interference from the bottom connector of the rail can be avoided from a spatial perspective, enabling continuous grinding. Furthermore, the combination of the two profile grinding wheels can perform full-section profile grinding on the rail web, making the profile of the rail web after grinding closer to the standard profile.

[0006] Technical Solution: A rail side grinder with a centrally located toothed profile grinding wheel includes a frame and a servo motor mounted on the frame. The output end of the servo motor is equipped with a grinding component for grinding the rail web. A gearbox is connected to the output end of the servo motor. The gearbox contains a main gear connected to and coaxially rotating with the output end of the servo motor, and a first driven gear and a second driven gear driven by the main gear. The grinding component includes a disc-shaped profile grinding wheel and a cylindrical profile grinding wheel. The first driven gear and the cylindrical profile grinding wheel are driven by a first grinding wheel shaft. The second driven gear and the disc-shaped profile grinding wheel are driven by a universal coupling assembly. The disc-shaped profile grinding wheel is inclined inwards, and its angle is fixed by a grinding wheel shaft fixing component fixedly connected to the gearbox.

[0007] The grinding method selected in this invention is single-sided double-contour grinding wheel grinding, which can ensure grinding efficiency and accuracy, and also control the number of grinding wheels to reduce the weight and volume of the grinding unit. By tilting the disc-shaped contour grinding wheel, the interference problem between the grinding wheel and the bottom connecting part of the rail is well solved, and the interference with the bottom connecting part of the rail is avoided from a spatial perspective, so as to achieve continuous grinding.

[0008] To achieve comprehensive grinding, the bottom edge of the disc-shaped profile grinding wheel is provided with an arc surface that fits into the bottom bend of the rail web, and the top edge of the cylindrical profile grinding wheel is provided with an arc surface that fits into the top bend of the rail web. The bottom of the cylindrical profile grinding wheel and the highest point of the grinding area of ​​the disc-shaped profile grinding wheel are on the same horizontal line.

[0009] The combination of two profile grinding wheels allows for full-section profile grinding of the rail web, resulting in a profile that more closely approximates the standard profile. By setting the shapes of the two profile grinding wheels and the side of the rail to be ground, the profile grinding wheels match the outer contour of the corresponding grinding area. Furthermore, the grinding areas of the cylindrical profile grinding wheel and the disc profile grinding wheel are connected, forming a complete rail web grinding surface and avoiding back-and-forth grinding that affects grinding efficiency.

[0010] In order to achieve the tilting and rotation of the disc-shaped profile grinding wheel, the universal coupling assembly includes a second grinding wheel shaft that is driven to the center of the second driven gear and is arranged vertically downward, and a universal coupling that is driven to the center of the disc-shaped profile grinding wheel at one end. The end of the second grinding wheel shaft away from the second driven gear is driven to the other end of the universal coupling.

[0011] A universal coupling is used to transmit power to a disc-shaped profile grinding wheel, reducing the installation of the drive unit and reducing the overall weight.

[0012] To achieve motion grinding, the servo motor, gearbox, and grinding part are symmetrically arranged along the center line of the frame. The servo motors on both sides are fixedly mounted on the bracket mounting plates arranged longitudinally on the frame. The frame is provided with bracket guide rails on both sides, and the bracket mounting plates are slidably connected to the frame through the bracket guide rails.

[0013] The system is equipped with two sets of servo motors, gearboxes, and grinding components symmetrically distributed along the rails, enabling simultaneous grinding of the rail webs on both sides. It can also be slidably mounted on the frame via a bracket mounting plate, allowing the entire grinding mechanism to move and grind, thus improving grinding efficiency.

[0014] To achieve controllable grinding speed, a central slide rail is provided directly above the steel rail, running along the direction of the steel rail and fixedly connected to the frame at both ends. The lower side of the central slide rail is set as an arc surface that matches the contour of the upper side of the steel rail. A rack is provided on the central slide rail. A central motor is fixedly mounted on the bracket mounting plate between the two servo motors. The output end of the central motor is connected to a traveling gear, which meshes with the rack on the central slide rail.

[0015] After installation, the curved surface of the lower side of the central slide rail fits into the upper side of the rail, achieving initial positioning. By setting a central motor whose output end meshes with the rack on the central slide rail, two servo motors and the grinding parts can be driven to move horizontally along the direction of the central slide rail. During operation, the grinding feed speed and direction can be well controlled, and the grinding quality can be better controlled, avoiding repeated grinding or over-grinding caused by uncontrollable grinding quality, thus improving the efficiency of rail grinding.

[0016] To enable quick assembly and disassembly of the mid-mounted motor, a travel groove is provided in the middle of the mid-mounted slide rail. The rack is set on any groove wall inside the travel groove, and a travel gear that meshes with the rack is provided in the travel groove. The output end of the mid-mounted motor is connected to the travel gear through a plum blossom-shaped flexible coupling.

[0017] The rack is set in the travel groove, and the travel gear is also set separately from the central motor in the travel groove. The travel gear is supported by the bottom of the travel groove. Matching plum blossom type flexible couplings are set at the upper end of the travel gear and the output end of the central motor. The plum blossom type flexible coupling is only subjected to pressure and not torsional force when connected, resulting in a longer service life and easy disassembly. It enables quick separation of the central motor and the travel gear. Since the central motor is installed in a central position of the entire device, its installation and disassembly are extremely inconvenient. The quick separation setting can reduce the time during installation and disassembly, and further improve work efficiency.

[0018] To achieve a proper fit between the grinding part and the rail, a longitudinal motor guide rail is provided on the bracket mounting plate. A motor mounting plate is provided between the servo motors on both sides and the bracket mounting plate. The motor mounting plate is slidably mounted on the motor guide rail. Pull rings are fixedly provided on the left and right sides of the gearbox, and the pull rings on the same side are connected by a heavy-duty tension spring.

[0019] The motor and grinding parts can slide longitudinally through the motor mounting plate and the longitudinal motor guide rail. This allows for rapid contact and disengagement between the grinding parts and the rail, enabling switching between working and non-working states. A heavy-duty tension spring installed between the gearbox provides a preload of 150N to 200N, which can pull the grinding parts on both sides towards the rail web until they are in contact with the rail web and pressed tightly. During grinding, the tension is continuously provided to ensure that the grinding surface of the grinding parts is always in contact with the rail web.

[0020] To prevent the grinding process from being affected by the protrusions on the outer surface of the rail, the support mounting plate has a locking groove parallel to the motor guide rail. The motor mounting plate has locking holes at symmetrical positions on both the left and right ends, which are on the same vertical line as the locking groove. It also includes locking bolts that pass through the locking holes and the locking groove. When not locked, the locking bolts can slide freely in the locking groove.

[0021] Because the rail web will form a rust layer and expose the welds after long-term use, the outer surface of the rail web is not completely flat. By tightening the bolts, the grinding parts and servo motor can be pulled by the heavy-duty tension spring until the grinding parts are in contact with the rail web and positioned on the bracket mounting plate, so as not to be affected by the condition of the outer surface of the rail web, thus achieving high-quality grinding.

[0022] To keep the frame relatively level and improve grinding accuracy, a clamping mechanism that can be detachably mounted on the frame is also included.

[0023] By setting a clamping mechanism, the frame can be kept in the same horizontal direction as the rail, thus improving the grinding accuracy.

[0024] To achieve clamping and positioning of the frame, the clamping mechanism includes a threaded clamping rod and symmetrically arranged first connecting rod, second connecting rod, first crossbar, second crossbar, and profile clamp. The clamping rod passes through the first crossbar, the second crossbar, and the middle of the connection between the central slide rail and the frame from top to bottom, and is threadedly connected to the second crossbar. One end of the first connecting rod is hinged to one end of the first crossbar, and the other end is hinged to the second connecting rod. The middle of the second connecting rod is hinged to the second crossbar, and the other end of the second connecting rod is hinged to the ear plate located in the middle of the outer side of the profile clamp.

[0025] The middle parts of the two second links are respectively hinged to the two ends of the second crossbar. One end of each second link is hinged to the ear plate on the profile clamp, and the other end is respectively hinged to the two ends of the first link. Rotating the clamping rod of the clamping mechanism allows the profile clamp to fit against the rail web and perform a clamping function, and also brings a downward clamping force, so that the profile clamp can fit tightly against the upper part of the rail web, thereby achieving the clamping and positioning effect of the entire frame, keeping the frame in a horizontal state relative to the rail, and improving the grinding quality.

[0026] Beneficial effects: The grinding method selected in this invention is single-sided double-contour grinding, which can ensure grinding efficiency and accuracy, and can also control the number of grinding wheels to reduce the weight and volume of the grinding unit. At the same time, it also effectively solves the problem of interference between the grinding wheel and the bottom connecting part of the rail during grinding. Since the rail size is standardized, by setting the size of the two contour grinding wheels and the angle of the disc-shaped contour grinding wheel, the interference of the bottom connecting part of the rail can be avoided from a spatial perspective, enabling continuous grinding. Moreover, the combination of the two contour grinding wheels can perform full-section profile grinding of the rail web, and can make the profile of the rail web after grinding closer to the standard profile.

[0027] This invention has a high degree of automation, requiring only workers to disassemble and assemble the equipment, thus reducing labor costs and improving safety during operation.

[0028] In terms of the overall structure of the grinding equipment, this invention achieves lightweight and miniaturization of the grinding equipment, making it easy to transport and disassemble for workers, and enabling flexible grinding operations. Attached Figure Description

[0029] 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.

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0031] Figure 2 This is a structural diagram of the internal structure of the gearbox of the present invention.

[0032] Figure 3 This is a structural diagram of the drive shaft and grinding component of the present invention.

[0033] Figure 4 This is a structural diagram of the motor mounting plate and bracket mounting plate of the present invention.

[0034] Figure 5 This is a top view of the present invention.

[0035] Figure 6 This is a structural diagram of the clamping mechanism of the present invention. Detailed Implementation

[0036] 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.

[0037] 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.

[0038] 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.

[0039] Depending on the application scenario, there are many types of steel rails, such as the 15 and 30 types for light rails, and the 50 and P types for heavy rails. 60 P 75 The types of crane rails include QU70 and QU80. Different types of rails have different dimensions, and the installation positions and space occupied by the screws and springs used for fastening vary. Therefore, the maximum radius of the disc-shaped profile grinding wheel is set within the range of 73mm to 77mm, and the maximum radius of the cylindrical profile grinding wheel is set within the range of 38mm to 42mm. The disc-shaped profile grinding wheel forms an angle of 35° to 45° with the bottom of the rail to avoid interference with the structural components used for fastening the rail and to achieve continuous grinding.

[0040] For different types of rails, within the above adjustable range, the size and tilt angle of the grinding piece are set to match the selected rail type to avoid interference with the structural components used for fastening that type of rail.

[0041] This embodiment uses P 60 The track is a specific embodiment, such as Figures 1 to 3 As shown, a rail side grinding machine with a centrally mounted toothed profile grinding wheel includes a frame 1 and a servo motor 2 mounted on the frame 1. The output end of the servo motor 2 is equipped with a grinding component 3 for grinding the rail web. A gearbox 4 is connected to the output end of the servo motor 2. The gearbox 4 contains a main gear 41 connected to and coaxially rotating with the output end of the servo motor 2, and a first driven gear 42 and a second driven gear 43 that are drively connected to the main gear 41. The grinding component 3 includes a disc-shaped profile grinding wheel 31 and a cylindrical profile grinding wheel 32. The maximum radius of the grinding wheel 31 is 73mm~77mm, and the maximum radius of the cylindrical contour grinding wheel 32 is 38mm~42mm. The first driven gear 42 and the cylindrical contour grinding wheel 32 are connected by a first grinding wheel shaft 33. The second driven gear 43 and the disc contour grinding wheel 31 are connected by a universal coupling assembly 34. The disc contour grinding wheel 31 is inclined inward and forms an angle of 38°~42° with the bottom of the track. The angle of the disc contour grinding wheel 31 is fixed by a grinding wheel shaft fixing member that is fixedly connected to the gearbox 4.

[0042] As the optimal size and angle settings in this embodiment, the maximum radius of the disc-shaped contour grinding wheel 31 is 75mm, the maximum radius of the cylindrical contour grinding wheel 32 is 40mm, and the disc-shaped contour grinding wheel 31 is inclined inward, forming an angle of 38.63° with the bottom of the track.

[0043] The grinding method selected in this invention is single-sided double-contour grinding wheel grinding, which can ensure grinding efficiency and accuracy, and also control the number of grinding wheels to reduce the weight and volume of the grinding unit. At the same time, it also effectively solves the problem of interference between the grinding wheel and the bottom connecting part of the rail during grinding. Since the rail size is standardized, by setting the size of the two contour grinding wheels and the angle of the disc-shaped contour grinding wheel 31, the interference of the bottom connecting part of the rail can be avoided from a spatial perspective, enabling continuous grinding. Moreover, the combination of the two contour grinding wheels can perform full-section profile grinding of the rail web, and make the profile of the rail web after grinding closer to the standard profile.

[0044] To achieve comprehensive grinding, the bottom edge of the disc-shaped profile grinding wheel 31 is provided with an arc surface that fits with the bottom bend of the rail web, and the top edge of the cylindrical profile grinding wheel 32 is provided with an arc surface that fits with the top bend of the rail web. The bottom of the cylindrical profile grinding wheel 32 and the highest point of the grinding area of ​​the disc-shaped profile grinding wheel 31 are on the same horizontal line.

[0045] By setting the shape of the two profile grinding wheels and the side of the rail being ground, the profile grinding wheels are matched with the outer contour of the corresponding grinding area, and the grinding area of ​​the cylindrical profile grinding wheel 32 is connected with the grinding area of ​​the disc profile grinding wheel 31 to form a complete rail web grinding surface, avoiding back-and-forth grinding that affects grinding efficiency.

[0046] like Figure 3 As shown, in order to achieve the tilting and rotation of the disc-shaped profile grinding wheel, the universal coupling assembly 34 includes a second grinding wheel shaft 341 that is centrally connected to the second driven gear 43 and is vertically downward, and a universal coupling 342 that is centrally connected to the disc-shaped profile grinding wheel 31 at one end. The end of the second grinding wheel shaft 341 away from the second driven gear 43 is connected to the other end of the universal coupling 342.

[0047] A universal coupling 342 is used to transmit power to the disc-shaped profile grinding wheel 31, reducing the installation of the drive unit and reducing the overall weight.

[0048] like Figures 1 to 5 As shown, in order to achieve motion grinding, the servo motor 2, gearbox 4 and grinding part 3 are symmetrically arranged along the center line of the frame 1. The servo motors 2 on both sides are fixedly installed on the upper side of the bracket mounting plate 5 arranged longitudinally on the frame 1. The frame 1 is provided with bracket guide rails 51 on both sides. The bracket mounting plate 5 is slidably connected to the frame 1 through the bracket guide rails 51.

[0049] Two sets of servo motors 2, gearboxes 4, and grinding parts 3 are symmetrically distributed along the rail to simultaneously grind the rail webs on both sides. The entire grinding mechanism is slidably mounted on the frame 1 via a bracket mounting plate 5, enabling the entire grinding mechanism to move and grind, thus improving grinding efficiency.

[0050] To achieve controllable grinding speed, a central slide rail 6 is provided directly above the steel rail, running along the direction of the steel rail and fixedly connected to the frame 1 at both ends. The lower side of the central slide rail 6 is set as an arc surface that matches the contour of the upper side of the steel rail. A rack 61 is provided on the central slide rail 6. A central motor 7 is provided between the two servo motors 2 and fixedly installed on the bracket mounting plate 5. The output end of the central motor 7 is connected to a traveling gear 8, which meshes with the rack 61 on the central slide rail 6.

[0051] After installation, the arc surface of the lower side of the central slide rail 6 fits against the upper side of the rail, achieving initial positioning. By setting the central motor 7, whose output end meshes with the rack 61 on the central slide rail 6, it can drive the two servo motors 2 and the grinding part 3 to move horizontally along the direction of the central slide rail 6. During operation, the grinding feed speed and direction can be well controlled, and the grinding quality can be better controlled, avoiding repeated grinding or over-grinding caused by uncontrollable grinding quality, thus improving the efficiency of rail grinding.

[0052] like Figures 2 to 5 As shown, in order to achieve quick assembly and disassembly of the central motor 7, a travel groove 62 is provided in the middle of the central slide rail 6. The rack 61 is set on any groove wall inside the travel groove 62. A travel gear 8 that meshes with the rack 61 is provided in the travel groove 62. The output end of the central motor 7 is connected to the travel gear 8 through a plum blossom type flexible coupling 71.

[0053] The rack 61 is set in the travel groove 62, and the travel gear 8 is disengaged from the central motor 7 and set in the travel groove 62. The travel gear 8 is supported by the bottom of the travel groove 62. Matching plum blossom type flexible couplings 71 are set at the upper end of the travel gear 8 and the output end of the central motor 7. The plum blossom type flexible coupling 71 is only subjected to pressure and not torsional force when connected, which has a longer service life and is easy to disassemble, realizing the quick disengagement of the central motor 7 and the travel gear 8. Since the central motor 7 is installed in a central position of the whole device, its installation and disassembly are extremely inconvenient. The quick disengagement setting can reduce the time during installation and disassembly, and further improve work efficiency.

[0054] like Figure 4 As shown, in order to achieve the fit between the grinding part 3 and the rail web, the bracket mounting plate 5 is provided with a longitudinal motor guide rail 52, and the servo motors 2 on both sides are provided with a motor mounting plate 21 between the bracket mounting plate 5. The motor mounting plate 21 can be slidably mounted on the motor guide rail 52. Pull rings 44 are fixedly provided on the left and right sides of the gearbox 4, and the pull rings 44 on the same side are connected by a heavy-duty tension spring 45.

[0055] The motor mounting plate 21 and the longitudinal motor guide rail 52 are slidably connected, enabling longitudinal sliding of the motor and the grinding part 3. This allows for rapid contact and disengagement between the grinding part 3 and the rail, i.e., switching between working and non-working states. The heavy-duty tension spring 45 installed between the gearboxes 4 provides a pre-tightening force of 150N to 200N, which can pull the grinding parts 3 on both sides towards the rail web until they are in contact with the rail web and pressed tightly. During grinding, the tension is continuously provided so that the grinding surface of the grinding part 3 is always in contact with the rail web.

[0056] To prevent the grinding process from being affected by the protrusions on the outer surface of the rail, the bracket mounting plate 5 is provided with a locking groove 53 parallel to the motor guide rail 52. The motor mounting plate 21 is provided with locking holes 211 at symmetrical positions on the left and right ends, which are on the same vertical line as the locking groove 53. It also includes locking bolts 54 that pass through the locking holes 211 and the locking groove 53. When not locked, the locking bolts 54 can slide freely in the locking groove 53.

[0057] Because the rail web will form a rust layer and the weld seam will be exposed after long-term use, the outer surface of the rail web is not completely flat. By tightening the bolt 54, the grinding part 3 and the servo motor 2 can be pulled by the heavy-duty tension spring 45 to be positioned on the bracket mounting plate 5 after the grinding part 3 is in contact with the rail web, so that it is not affected by the condition of the outer surface of the rail web and high-quality grinding can be achieved.

[0058] like Figure 6 As shown, in order to keep the frame 1 relatively horizontal and improve the grinding accuracy, a clamping mechanism 9 that can be detachably installed on the frame 1 is also included.

[0059] By setting the clamping mechanism 9, the frame 1 can be kept in the same horizontal direction as the rail, thereby improving the grinding accuracy.

[0060] To achieve clamping of the clamping mechanism 9 and positioning of the frame 1, the clamping mechanism 9 includes a threaded clamping rod 91 and symmetrically arranged first connecting rod 92, second connecting rod 93, first crossbar 94, second crossbar 95 and contour clamp 96. The clamping rod 91 passes through the first crossbar 94, the second crossbar 95 and the middle part of the connection between the central slide rail 6 and the frame 1 from top to bottom and is threadedly connected to the second crossbar 95. One end of the first connecting rod 92 is hinged to one end of the first crossbar 94 and the other end is hinged to the second connecting rod 93. The middle part of the second connecting rod 93 is hinged to the second crossbar 95. The other end of the second connecting rod 93 is hinged to the ear plate 97 located in the middle of the outer side of the contour clamp 96.

[0061] The middle parts of the two second connecting rods 93 are respectively hinged to the two ends of the second crossbar 95. One end of each second connecting rod 93 is hinged to the ear plate 97 on the conforming clamp 96, and the other end is respectively hinged to the two ends of the first connecting rod 92. Rotating the clamping rod 91 of the clamping mechanism 9 allows the conforming clamp 96 to fit against the rail web and perform a clamping function, and also brings a downward clamping force, so that the conforming clamp 96 can fit tightly against the upper part of the rail web, thereby achieving the clamping and positioning effect of the entire frame 1, keeping the frame 1 in a horizontal state relative to the rail, and improving the grinding quality.

[0062] 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 the method section.

[0063] 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 rail side grinding machine with a centrally located toothed profile grinding wheel, comprising a frame (1) and a servo motor (2) mounted on the frame (1), wherein the output end of the servo motor (2) is provided with a grinding component (3) for grinding the rail web, characterized in that: The output end of the servo motor (2) is connected to a gearbox (4). The gearbox (4) is provided with a main gear (41) connected to the output end of the servo motor (2) and rotating coaxially, as well as a first driven gear (42) and a second driven gear (43) that are connected to the main gear (41). The grinding part (3) includes a disc-shaped profile grinding wheel (31) and a cylindrical profile grinding wheel (32). The first driven gear (42) and the cylindrical profile grinding wheel (32) are connected by a first grinding wheel shaft (33). The second driven gear (43) and the disc-shaped profile grinding wheel (31) are connected by a universal coupling assembly (34). The disc-shaped profile grinding wheel (31) is inclined inward. The angle of the disc-shaped profile grinding wheel (31) is fixed by a grinding wheel shaft fixing member (35) that is fixedly connected to the gearbox (4). The bottom edge of the disc-shaped profile grinding wheel (31) is provided with an arc surface that fits with the bottom bend of the rail web, and the top edge of the cylindrical profile grinding wheel (32) is provided with an arc surface that fits with the top bend of the rail web. The bottom of the cylindrical profile grinding wheel (32) and the highest point of the grinding area of ​​the disc-shaped profile grinding wheel (31) are on the same horizontal line. The servo motor (2), gearbox (4) and grinding part (3) are symmetrically arranged along the center line of the frame (1). The servo motor (2) on both sides is fixedly installed on the upper side of the bracket mounting plate (5) arranged longitudinally on the frame (1). The frame (1) is provided with bracket guide rails (51) on both sides. The bracket mounting plate (5) is slidably connected to the frame (1) through the bracket guide rails (51). Above the rail is a central slide rail (6) that is set along the rail direction and fixedly connected to the frame (1) at both ends. The lower side of the central slide rail (6) is set as an arc surface that matches the upper side profile of the rail. A rack (61) is provided on the central slide rail (6). A central motor (7) is fixedly installed on the bracket mounting plate (5) between the two servo motors (2). The output end of the central motor (7) is connected to a walking gear (8). The walking gear (8) meshes with the rack (61) on the central slide rail (6).

2. The rail side grinder with centrally located toothed profile grinding wheel according to claim 1, characterized in that: The universal coupling assembly (34) includes a second grinding wheel shaft (341) that is centrally driven connected to the second driven gear (43) and vertically downward, and a universal coupling (342) that is centrally driven connected to the disc-shaped profile grinding wheel (31) at one end. The end of the second grinding wheel shaft (341) away from the second driven gear (43) is driven connected to the other end of the universal coupling (342).

3. The rail side grinder with centrally located toothed profile grinding wheel according to claim 1, characterized in that: The central slide rail (6) has a travel groove (62) in the middle. The rack (61) is set on any groove wall inside the travel groove (62). The travel groove (62) is provided with a travel gear (8) that meshes with the rack (61). The output end of the central motor (7) is connected to the travel gear (8) through a plum blossom type flexible coupling (71).

4. The rail side grinder with centrally located toothed profile grinding wheel according to claim 3, characterized in that: The bracket mounting plate (5) is provided with a longitudinal motor guide rail (52). The servo motors (2) on both sides are provided with a motor mounting plate (21) between the bracket mounting plate (5). The motor mounting plate (21) can be slidably mounted on the motor guide rail (52). Pull rings (44) are fixedly provided on the left and right sides of the gearbox (4). The pull rings (44) on the same side are connected by a heavy-duty tension spring (45).

5. The rail side grinder with centrally located toothed profile grinding wheel according to claim 4, characterized in that: The bracket mounting plate (5) has a locking groove (53) parallel to the motor guide rail (52). The motor mounting plate (21) has locking holes (211) at symmetrical positions on the left and right ends, which are on the same vertical line as the locking groove (53). It also includes a locking bolt (54) that passes through the locking hole (211) and the locking groove (53). When not locked, the locking bolt (54) slides freely in the locking groove (53).

6. The rail side grinder with centrally located toothed profile grinding wheel according to claim 1, characterized in that: It also includes a clamping mechanism (9) that can be detachably mounted on the frame (1).

7. The rail side grinder with centrally located toothed profile grinding wheel as described in claim 6, characterized in that: The clamping mechanism (9) includes a threaded clamping rod (91) and symmetrically arranged first connecting rod (92), second connecting rod (93), first crossbar (94), second crossbar (95) and profile clamp (96). The clamping rod (91) passes through the middle of the connection between the first crossbar (94), the second crossbar (95) and the central slide rail (6) and the frame (1) from top to bottom and is threadedly connected to the second crossbar (95). One end of the first connecting rod (92) is hinged to one end of the first crossbar (94) and the other end is hinged to the second connecting rod (93). The middle part of the second connecting rod (93) is hinged to the second crossbar (95), and the other end of the second connecting rod (93) is hinged to the ear plate (97) located in the middle of the outer side of the profile clamp (96).

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