Multifunctional electric rail web grinding machine

Abstract

The utility model discloses a multifunctional electric rail web grinding machine, which comprises a walking mechanism, a grinding mechanism, a grinding mechanism, a grinding mechanism, a grinding mechanism, a grinding mechanism, a grinding mechanism, a grinding mechanism, a grinding mechanism and a grinding mechanism, and is characterized in that the walking mechanism comprises a walking frame, a walking wheel and a walking electric push cylinder; the rail head clamping assembly is rotationally connected with a piston rod of the walking electric push cylinder and clamps the multi-specification steel rails through double locking handles; the height adjusting support assembly is installed on the walking frame and clamps the steel rail in a rolling mode. The grinding mechanisms are rotationally mounted on the two sides of the walking frame; the rapid clamping assembly is arranged above the walking frame and connected with the polishing mechanisms on the two sides; the power unit is mounted on the walking frame and drives the grinding mechanism to rotate up and down to grind the rail web; and the left and right clamping assemblies are mounted on the walking frame. By means of the mode, inclination of the whole machine and accidents are prevented, rail webs of different rail types can be polished, the clamping force of one side can be finely adjusted, it is guaranteed that the clamping force of the two sides is consistent, and the clamping force of the two sides can be synchronously adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of railway construction, in particular to a multi-functional electric rail web grinding machine. Background Art

[0002] The steel rail is the main component of the railway track. Its function is to guide the wheels of the locomotive to move forward, bear the huge pressure of the wheels, and transmit it to the sleeper. The top of the steel rail is the upper jaw, and the side wall below the upper jaw is the rail web. The existing rail web grinding machines have the following problems: they can only grind the rail web of a single rail type, making it difficult to achieve universality. During the grinding process of the rail web by the grinding wheel, there is relatively large shaking up and down, the grinding action is not stable enough, and the grinding effect is not good. Due to the continuous up and down shaking of the grinding wheel during the grinding process, there is a problem that the grinding machine tilts. It is difficult to adjust the clamping force of the two side grinding wheels to be consistent, and there are differences in the grinding effects on both sides.

[0003] Based on the above defects and deficiencies, it is necessary to improve the existing technology and design a multi-functional electric rail web grinding machine. Summary of the Utility Model

[0004] The main technical problem solved by the utility model is to provide a multi-functional electric rail web grinding machine, which can prevent the whole machine from tilting and unexpected situations from occurring, can grind the rail webs of different rail types, that is, it can finely adjust the clamping force on one side to ensure that the clamping forces on both sides are consistent, and can also adjust the clamping forces on both sides synchronously.

[0005] To solve the above technical problem, a technical solution adopted by the utility model is: to provide a multi-functional electric rail web grinding machine, which includes:

[0006] A traveling mechanism, including a traveling frame, traveling wheels installed on the traveling frame and mounted on the steel rail, and a traveling electric push rod cylinder installed on the traveling frame, with the tail of the traveling electric push rod cylinder rotatably installed on the traveling frame;

[0007] A rail head clamping assembly, rotatably connected to the piston rod of the traveling electric push rod cylinder, clamping multi-specification steel rails through a double locking handle, and the piston rod of the traveling electric push rod cylinder extends to drive the traveling frame to move along the steel rail;

[0008] A height adjustment bracket assembly, installed on the traveling frame and rolling to clamp the steel rail to adjust the grinding height;

[0009] A grinding mechanism, rotatably installed on both sides of the traveling frame for grinding the rail web;

[0010] A quick clamping assembly, arranged above the traveling frame and connected to the grinding mechanisms on both sides to adjust the clamping force of the grinding wheels of the grinding mechanisms on both sides;

[0011] A power unit, installed on the traveling frame to drive the grinding mechanism to rotate up and down to grind the rail web;

[0012] The left and right clamping assemblies are installed on the walking frame, roll and guide to clamp the rail, and prevent the whole machine from tilting;

[0013] The control box is installed on the walking electric push cylinder.

[0014] Preferably, the rail head clamping assembly includes a first fixed seat, two rail head clamping jaws hinged to the first fixed seat, a bidirectional screw passing through the two rail head clamping jaws, nut rods installed on the screw threads on both sides of the bidirectional screw, and a locking handle installed at the outer end of the bidirectional screw. The nut rods are inserted into the rail head clamping jaws, and the clamping surface of the rail head clamping jaws is a flat surface.

[0015] Preferably, the height adjustment bracket assembly includes a gantry, a lifting frame, an adjustment screw, a ratchet wrench, an adjustment rotating shaft, rollers, adjustment blocks, and auxiliary clamping rollers. The gantry is fixed to the walking frame. The lifting frame is slidably installed inside the gantry. The adjustment screw is threadedly installed at the top of the gantry. The adjustment screw passes through the lower end of the lifting frame and is installed with a nut. The upper end of the adjustment screw is installed with a ratchet wrench. The adjustment rotating shaft is inserted through the lifting frame. A roller that is in rolling contact with the bottom surface of the walking frame is installed in the middle of the adjustment rotating shaft. Bidirectional threads are symmetrically arranged on the adjustment rotating shaft. Adjustment blocks are threadedly connected to the threads. Auxiliary clamping rollers are inserted at the lower ends of the adjustment blocks.

[0016] Preferably, the grinding mechanism includes a rotating shaft, a fixed clamp, a fixed shaft, a grinding mounting frame, a mounting plate, a grinding motor, a grinding wheel, and a balance spring. The rotating shaft is installed on the walking frame through a bearing seat. Fixed clamps are installed at both ends of the rotating shaft. Fixed shafts are vertically installed on the fixed clamps. Two grinding mounting frames are movably sleeved on the fixed shafts. The upper ends of the two fixed shafts are fixedly connected through the mounting plate. A grinding motor is installed at the extending end of the grinding mounting frame. The grinding motor drives the grinding wheel to rotate. Both sides of the mounting plate are elastically connected to the walking frame through balance springs.

[0017] Preferably, the quick clamping assembly includes a quick clamp, an adjustment bolt, a connecting plate, and an elastic adjustment arm. The quick clamp is installed on the mounting plate of the grinding mechanism. An adjustment bolt is threadedly connected to the rotating pin of the quick clamp. The adjustment bolt passes through the connecting plate. Both ends of the connecting plate are connected to the grinding mounting frame of the grinding mechanism through elastic adjustment arms. The elastic adjustment arm includes an adjustment tension spring connected to the grinding mounting frame, a fine adjustment screw arranged at the other end of the adjustment tension spring, and two fine adjustment nuts threadedly installed on the fine adjustment screw. The fine adjustment screw passes through the connecting plate, and the two fine adjustment nuts are respectively located on both sides of the connecting plate.

[0018] Preferably, the power unit includes a reduction motor, a cam disk, and a spherical plain bearing. The reduction motor is mounted on the traveling frame through a motor bracket. A cam disk is mounted on the motor shaft of the reduction motor. The cam disk and the mounting plate of the grinding mechanism below it are rotatably connected through a spherical plain bearing. A number of adjustment holes for mounting the spherical plain bearing are provided on the cam disk, and the distances from the number of adjustment holes to the center of the cam disk are different.

[0019] Preferably, the left and right clamping assemblies include an adjustment rod, a fixed seat II, a buffer spring, a clamping nut, a rail jaw clamping block, a rail jaw clamping roller, a rolling bearing, a rotating handle, a first tension spring, and a positioning rod. The adjustment rod vertically passes through the traveling frame. A fixed seat II is mounted on the adjustment rod. A buffer spring that abuts against the traveling frame is installed in the fixed seat II. Under the elastic force of the buffer spring, the adjustment rod jacks upward. Two clamping nuts are threadedly connected to the middle of the adjustment rod. A rail jaw clamping block is installed on the adjustment rod between the clamping nuts. A rail jaw clamping roller that can rollingly contact the rail jaw is mounted on the rail jaw clamping block. A rolling bearing that rollingly contacts the rail web is installed at the lower end of the adjustment rod. A rotating handle is rotatably mounted at the upper end of the adjustment rod. A positioning opening is provided on the rotating handle. A positioning rod that cooperates with the positioning opening is mounted on the fixed seat II. The opening end of the rotating handle is connected to the lower fixed seat II through a first tension spring.

[0020] Preferably, a multifunctional electric rail web grinding machine further includes a measuring tape. A measuring tape for positioning the grinding distance is mounted at the front end of the traveling frame.

[0021] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0022] A height adjustment bracket assembly is added to adjust the installation height of the traveling frame, thereby adjusting the grinding height. In cooperation with the cam disk, the spherical plain bearing is installed in the corresponding adjustment hole of the cam disk. The power unit drives the grinding mechanism to swing up and down with different amplitudes, and the grinding requirements for different rail types can be realized;

[0023] An adjustment block and an auxiliary clamping roller are added to assist in clamping and limiting the rail head of the grinding machine;

[0024] A balance spring is added to ensure more stable operation during up and down swinging;

[0025] The rail head clamping assembly is optimized to realize clamping of different rail types. The setting of the double locking handles can quickly clamp or release the rail, and the force is more uniform;

[0026] The quick clamping assembly quickly drives the grinding wheels to clamp the rail web through the quick clamping assembly. Rotate the adjustment bolt to synchronously adjust the clamping force of the two grinding wheels; in addition, rotate the fine adjustment nut of the single-side elastic adjustment arm to realize the adjustment of the clamping force of the single-side grinding wheel, that is, the single-side clamping force can be finely adjusted to ensure that the clamping forces on both sides are the same, or the clamping forces on both sides can be adjusted synchronously;

[0027] The left and right clamping components ensure the relative position of the whole machine and the rail is fixed, without tilting, making the operation of the whole machine more stable, the grinding effect better, and suitable for grinding the rail web at different positions. Brief Description of the Drawings

[0028] Figure 1 It is a side view of a multi-functional electric rail web grinding machine.

[0029] Figure 2 It is a schematic structural diagram of the rail head clamping component of a multi-functional electric rail web grinding machine.

[0030] Figure 3 It is a schematic structural diagram of the height adjustment bracket component of a multi-functional electric rail web grinding machine.

[0031] Figure 4 It is a schematic partial structural diagram of a multi-functional electric rail web grinding machine.

[0032] Figure 5 It is a schematic local structural diagram of a multi-functional electric rail web grinding machine.

[0033] Figure 6 It is a schematic structural diagram of the left and right clamping components of a multi-functional electric rail web grinding machine.

[0034] Figure 7 It is a schematic structural diagram of the measuring tape of a multi-functional electric rail web grinding machine.

[0035] Among them, 1. Traveling mechanism, 11. Traveling frame, 12. Traveling wheels, 13. Traveling electric push cylinder;

[0036] 2. Rail head clamping component, 21. Fixed seat 1, 22. Rail head clamping jaw, 23. Bidirectional screw, 24. Nut rod, 25. Locking handle;

[0037] 3. Height adjustment bracket component, 31. Gantry frame, 32. Lifting frame, 33. Adjusting screw, 34. Ratchet wrench, 35. Adjusting rotating shaft, 36. Roller, 37. Adjusting block, 38. Auxiliary clamping roller;

[0038] 4. Grinding mechanism, 41. Rotating shaft, 42. Fixed clamp, 43. Fixed shaft, 44. Grinding mounting frame, 45. Mounting plate, 46. Grinding motor, 47. Grinding wheel, 48. Balance spring;

[0039] 5. Quick clamping component, 51. Quick clamp, 52. Adjusting bolt, 53. Connecting plate, 54. Elastic adjustment arm, 541. Adjusting tension spring, 542. Fine adjustment screw, 543. Fine adjustment nut;

[0040] 6. Power unit, 61. Reducing motor, 62. Cam disc, 63. Spherical plain bearing;

[0041] 7. Left and right clamping assembly, 71. Adjusting rod, 72. Fixed seat II, 73. Buffer spring, 74. Clamping nut, 75. Rail jaw clamping block, 76. Rail jaw clamping roller, 77. Rolling bearing, 78. Rotating handle, 79. Pull spring I, 710. Positioning rod;

[0042] 8. Control box;

[0043] 9. Measuring tape. Specific implementation mode

[0044] The following elaborates on the preferred embodiments of the present utility model in conjunction with the attached drawings, so that the advantages and features of the utility model can be more easily understood by those skilled in the art, thereby making the protection scope of the present utility model more clearly defined.

[0045] Please refer to Figures 1 to 7 , the embodiments of the present utility model include:

[0046] A multifunctional electric rail waist grinding machine, which includes:

[0047] The traveling mechanism 1 includes a traveling frame 11, traveling wheels 12 installed on the traveling frame 11 and mounted on the rail, and a traveling electric push cylinder 13 installed on the traveling frame 11. The tail of the traveling electric push cylinder 13 is rotatably installed on the traveling frame 11;

[0048] The rail head clamping assembly 2 is rotatably connected to the piston rod of the traveling electric push cylinder 13 and clamps multi-specification rails through a double locking handle. When the piston rod of the traveling electric push cylinder 13 extends, it drives the traveling frame 11 to move along the rail;

[0049] The height adjusting bracket assembly 3 is installed on the traveling frame 11 and rolls to clamp the rail to adjust the grinding height;

[0050] The grinding mechanism 4 is rotatably installed on both sides of the traveling frame 11 for grinding the rail waist;

[0051] The quick clamping assembly 5 is arranged above the traveling frame 11 and connected to the grinding mechanisms 4 on both sides to adjust the clamping force of the grinding wheels of the grinding mechanisms 4 on both sides;

[0052] The power unit 6 is installed on the traveling frame 11 to drive the grinding mechanism 4 to rotate up and down to grind the rail waist;

[0053] The left and right clamping assembly 7 is installed on the traveling frame 11 to roll and guide to clamp the rail to prevent the whole machine from tilting;

[0054] The control box 8 is installed on the traveling electric push cylinder 13.

[0055] The rail head clamping assembly 2 includes a first fixed seat 21, two rail head clamping jaws 22 hinged to the first fixed seat 21, a bidirectional screw 23 passing through the two rail head clamping jaws 22, nut rods 24 installed on the threads on both sides of the bidirectional screw 23, and a locking handle 25 installed at the outer end of the bidirectional screw 23. The nut rods 24 are inserted into the rail head clamping jaws 22. By synchronously rotating the locking handle 25 with both hands, the bidirectional screw 23 is driven to rotate, and the two nut rods 24 on the bidirectional screw 23 move relatively or away from each other, thereby driving the two rail head clamping jaws 22 to quickly clamp or release the rail. The clamping surface of the rail head clamping jaw 22 is a plane, which can realize the clamping of rails of different types. In the past, there was a hook under the rail head clamping jaw 22, which was only suitable for clamping a single type of rail.

[0056] The height adjustment bracket assembly 3 includes a gantry 31, a lifting frame 32, an adjustment screw 33, a ratchet wrench 34, an adjustment rotating shaft 35, rollers 36, an adjustment block 37, and an auxiliary clamping roller 38. The gantry 31 is fixed to the walking frame 11. The lifting frame 32 is slidably installed inside the gantry 31. The adjustment screw 33 is threadedly installed at the top of the gantry 31. The adjustment screw 33 passes through the lower end of the lifting frame 32 and is installed with a nut. The upper end of the adjustment screw 33 is installed with a ratchet wrench 34. The lifting frame 32 is penetrated with an adjustment rotating shaft 35. A roller 36 that is in rolling contact with the bottom surface of the walking frame 11 is installed in the middle of the adjustment rotating shaft 35. By rotating the adjustment screw 33 with the ratchet wrench 34, the height of the lifting frame 32 relative to the gantry 31 can be adjusted. The roller 36 is always in rolling contact with the upper end surface of the gantry 31, and then the installation height of the walking frame 11 is adjusted, that is, the grinding height of the grinding mechanism 4 is adjusted. The adjustment rotating shaft 35 is symmetrically provided with a bidirectional thread, and the adjustment block 37 is threadedly connected to the thread. The auxiliary clamping roller 38 is inserted at the lower end of the adjustment block 37. By rotating the adjustment rotating shaft 35, the two adjustment blocks 37 on the adjustment rotating shaft 35 move relatively, and the auxiliary rollers clamp the rail.

[0057] The grinding mechanism 4 includes a rotating shaft 41, a fixed clamp 42, a fixed shaft 43, a grinding mounting frame 44, a mounting plate 45, a grinding motor 46, a grinding wheel 47, and a balance spring 48. The rotating shaft 41 is installed on the walking frame 11 through a bearing seat. Fixed clamps 42 are installed at both ends of the rotating shaft 41. A fixed shaft 43 is vertically installed on the fixed clamp 42. Two grinding mounting frames 44 are movably sleeved on the fixed shaft 43. The upper ends of the two fixed shafts 43 are fixedly connected through a mounting plate 45. A grinding motor 46 is installed at the extending end of the grinding mounting frame 44, and the grinding motor 46 drives the grinding wheel 47 to rotate. Both sides of the mounting plate 45 are elastically connected to the walking frame 11 through balance springs 48. By adding the balance springs 48, the operation of the grinding mechanism 4 is more stable when it swings up and down.

[0058] The quick clamping assembly 5 includes a quick clamp 51, an adjusting bolt 52, a connecting plate 53, and an elastic adjusting arm 54. The quick clamp 51 is installed on the mounting plate 45 of the grinding mechanism 4. An adjusting bolt 52 is threadedly connected to the rotating pin of the quick clamp 51. The adjusting bolt 52 passes through the connecting plate 53. Both ends of the connecting plate 53 are connected to the grinding mounting frame 44 of the grinding mechanism 4 through the elastic adjusting arm 54. Press down to close the quick clamp 51, pull the connecting plate 53 through the adjusting bolt 52, and then pull the two grinding mounting frames 44 through the elastic adjusting arm 54. The two grinding mounting frames 44 rotate to drive the grinding wheel 47 to closely adhere to the rail web. On the contrary, lift up to open the quick clamp 51, and the two grinding mechanisms 4 are released. Rotate the adjusting bolt 52 to adjust the distance between the connecting plate 53 and the quick clamp 51, so as to adjust the clamping force of the two grinding wheels 47 on the rail web. The elastic adjusting arm 54 includes an adjusting tension spring 541 connected to the grinding mounting frame 44, a fine-tuning screw 542 arranged at the other end of the adjusting tension spring 541, and two fine-tuning nuts 543 threadedly installed on the fine-tuning screw 542. The fine-tuning screw 542 passes through the connecting plate 53, and the two fine-tuning nuts 543 are respectively located on both sides of the connecting plate 53. Rotate the fine-tuning nuts 543 to realize the adjustment of the clamping force of the single-side grinding wheel 47.

[0059] The power unit 6 includes a reduction motor 61, a cam disc 62, and a spherical plain bearing 63. The reduction motor 61 is installed on the traveling frame 11 through a motor bracket. A cam disc 62 is installed on the motor shaft of the reduction motor 61. The cam disc 62 and the mounting plate 45 of the grinding mechanism 4 below it are rotatably connected through the spherical plain bearing 63. The reduction motor 61 drives the cam disc 62 to rotate, driving the mounting plate 45 to swing up and down relative to the rotating shaft 41, so as to drive the grinding wheel 47 to swing up and down to grind the rail web. A number of adjusting holes for installing the spherical plain bearing 63 are provided on the cam disc 62, and the distances from the number of adjusting holes to the center of the cam disc 62 are different to adapt to grinding the rail webs of different rail types.

[0060] The left and right clamping assemblies 7 include an adjusting rod 71, a second fixed seat 72, a buffer spring 73, a clamping nut 74, a rail jaw clamping block 75, a rail jaw clamping roller 76, a rolling bearing 77, a rotating handle 78, a first tension spring 79, and a positioning rod 710. The adjusting rod 71 vertically passes through the walking frame 11. A second fixed seat 72 is installed on the adjusting rod 71. A buffer spring 73 that abuts against the walking frame 11 is installed in the second fixed seat 72. Under the elastic force of the buffer spring 73, the adjusting rod 71 is pushed upward. Two clamping nuts 74 are threadedly connected to the middle of the adjusting rod 71. A rail jaw clamping block 75 is installed on the adjusting rod 71 between the clamping nuts 74. A rail jaw clamping roller 76 that can rollingly contact the rail jaw is installed on the rail jaw clamping block 75. By rotating and adjusting the clamping nut 74, the installation height of the rail jaw clamping roller 76 is adjusted to ensure its rolling contact with the rail jaw. A rolling bearing 77 that rollingly contacts the rail web is installed at the lower end of the adjusting rod 71. A rotating handle 78 is rotatably installed at the upper end of the adjusting rod 71. A positioning opening is provided on the rotating handle 78. A positioning rod 710 that cooperates with the positioning opening is installed on the second fixed seat 72. The opening end of the rotating handle 78 is connected to the lower second fixed seat 72 through a first tension spring 79. Under the pulling force of the first tension spring 79, the positioning opening of the rotating handle 78 is downwardly snapped into the positioning rod 710. At this time, the rail jaw clamping roller 76 is parallel to the rail jaw direction. When loosening the left and right clamping assemblies 7, press the tail of the rotating handle 78, the positioning opening is lifted off the positioning rod 710, press the adjusting rod 71 downward and rotate it, and the rail jaw clamping roller 76 rotates out.

[0061] A multifunctional electric rail web grinding machine further includes a measuring tape 9. A measuring tape 9 for positioning the grinding distance is installed at the front end of the walking frame 11.

[0062] The multifunctional electric rail web grinding machine of the present utility model has a stable structure, a fast and convenient clamping and loosening method, the grinding wheel elastically contacts the rail web, reducing damage to the rail. At the same time, clamping structures at multiple positions, such as the rail head clamping assembly 2, the auxiliary clamping roller 38 of the height adjustment bracket assembly 3, the quick clamping assembly 5, and the left and right clamping assemblies 7, can enable the walking frame 11 to run stably on the rail, preventing the whole machine from tilting and accidents from occurring; the added height adjustment bracket assembly 3 can meet the grinding requirements for different rail types. It needs to cooperate with the cam disk 62 at the same time. When grinding the rail webs of different rail types, the spherical plain bearing 63 is replaced to the corresponding adjustment hole position on the cam disk 62, and then the height of the lifting frame 32 is adjusted to the corresponding height position, thus realizing the grinding of rail webs with different heights.

[0063] For the multifunctional electric rail web grinding machine of the present utility model, the clamping structures at multiple positions enable the walking frame to run stably on the rail, preventing the whole machine from tilting and accidents from occurring, and it can grind the rail webs of different rail types. That is, it can finely adjust the unilateral clamping force to ensure that the clamping forces on both sides are consistent, or it can also adjust the clamping forces on both sides synchronously.

[0064] The above are only embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A multifunctional electric rail waist grinding machine, characterized in that: Comprising: A traveling mechanism (1), including a traveling frame (11), traveling wheels (12) installed on the traveling frame (11) and mounted on the rail, and a traveling electric push cylinder (13) installed on the traveling frame (11), with the tail of the traveling electric push cylinder (13) rotatably installed on the traveling frame (11); A rail head clamping assembly (2), rotatably connected to the piston rod of the traveling electric push cylinder (13), clamping multi-specification rails through a double locking handle, and the extension of the piston rod of the traveling electric push cylinder (13) drives the traveling frame (11) to travel along the rail; A height adjustment bracket assembly (3), installed on the traveling frame (11) and rolling-clamping the rail to adjust the grinding height; A grinding mechanism (4), rotatably installed on both sides of the traveling frame (11) for grinding the rail web; A quick clamping assembly (5), arranged above the traveling frame (11) and connected to the grinding mechanisms (4) on both sides to adjust the clamping force of the grinding wheels of the grinding mechanisms (4) on both sides; A power unit (6), installed on the traveling frame (11) to drive the grinding mechanism (4) to rotate up and down for grinding the rail web; A left and right clamping assembly (7), installed on the traveling frame (11) to roll and guide and clamp the rail to prevent the whole machine from tilting; A control box (8), installed on the traveling electric push cylinder (13).

2. The multifunctional electric rail waist grinding machine according to claim 1, characterized in that: The rail head clamping assembly (2) includes a fixed seat one (21), two rail head claws (22) hinged to the fixed seat one (21), a bidirectional screw (23) passing through the two rail head claws (22), nut rods (24) installed on the screw threads on both sides of the bidirectional screw (23), and a locking handle (25) installed at the outer end of the bidirectional screw (23). The nut rods (24) are inserted into the rail head claws (22), and the clamping surface of the rail head claws (22) is a plane.

3. A multi-functional electric rail waist grinding machine according to claim 1, characterized in that: The height adjustment bracket assembly (3) includes a gantry frame (31), a lifting frame (32), an adjustment screw (33), a ratchet wrench (34), an adjustment rotating shaft (35), rollers (36), an adjustment block (37), and auxiliary clamping rollers (38). The gantry frame (31) is fixed to the traveling frame (11), the lifting frame (32) is slidably installed inside the gantry frame (31), the adjustment screw (33) is threadedly installed at the top of the gantry frame (31), the adjustment screw (33) passes through the lower end of the lifting frame (32) and is installed with a nut, the upper end of the adjustment screw (33) is installed with the ratchet wrench (34), the lifting frame (32) is penetrated with the adjustment rotating shaft (35), the middle of the adjustment rotating shaft (35) is installed with rollers (36) that rollingly contact the bottom surface of the traveling frame (11), the adjustment rotating shaft (35) is symmetrically provided with a bidirectional thread, the adjustment block (37) is threadedly connected to the threaded part, and the lower end of the adjustment block (37) is inserted with the auxiliary clamping rollers (38).

4. A multifunctional electric rail waist grinding machine according to claim 1, characterized in that: The grinding mechanism (4) includes a rotating shaft (41), a fixed clamp (42), a fixed shaft (43), a grinding mounting frame (44), a mounting plate (45), a grinding motor (46), a grinding wheel (47), and a balance spring (48). The rotating shaft (41) is installed on the walking frame (11) through a bearing seat. Fixed clamps (42) are installed at both ends of the rotating shaft (41). A fixed shaft (43) is vertically installed on the fixed clamp (42). Two grinding mounting frames (44) are movably sleeved on the fixed shaft (43). The upper ends of the two fixed shafts (43) are fixedly connected through a mounting plate (45). A grinding motor (46) is installed at the extending end of the grinding mounting frame (44). The grinding motor (46) drives the grinding wheel (47) to rotate. Both sides of the mounting plate (45) are elastically connected to the walking frame (11) through balance springs (48).

5. The multifunctional electric rail waist grinding machine according to claim 1, wherein: The quick clamping assembly (5) includes a quick clamp (51), an adjusting bolt (52), a connecting plate (53), and an elastic adjusting arm (54). The quick clamp (51) is installed on the mounting plate (45) of the grinding mechanism (4). An adjusting bolt (52) is threadedly connected to the rotating pin of the quick clamp (51). The adjusting bolt (52) passes through the connecting plate (53). Both ends of the connecting plate (53) are connected to the grinding mounting frame (44) of the grinding mechanism (4) through elastic adjusting arms (54). The elastic adjusting arm (54) includes an adjusting tension spring (541) connected to the grinding mounting frame (44), a fine adjustment screw (542) provided at the other end of the adjusting tension spring (541), and two fine adjustment nuts (543) threadedly installed on the fine adjustment screw (542). The fine adjustment screw (542) passes through the connecting plate (53). The two fine adjustment nuts (543) are respectively located on both sides of the connecting plate (53).

6. The multifunctional electric rail web grinding machine according to claim 1, characterized in that: The power unit (6) includes a reduction motor (61), a cam disc (62), and a spherical plain bearing (63). The reduction motor (61) is installed on the walking frame (11) through a motor bracket. A cam disc (62) is installed on the motor shaft of the reduction motor (61). The cam disc (62) and the mounting plate (45) of the grinding mechanism (4) below it are rotatably connected through a spherical plain bearing (63). A number of adjustment holes for installing the spherical plain bearings (63) are provided on the cam disc (62). The distances from the number of adjustment holes to the center of the cam disc (62) are different.

7. A multifunctional electric rail waist grinding machine according to claim 1, characterized in that: The left and right clamping assemblies (7) include an adjusting rod (71), a second fixed seat (72), a buffer spring (73), a clamping nut (74), a rail jaw clamping block (75), a rail jaw clamping roller (76), a rolling bearing (77), a rotating handle (78), a first tension spring (79), and a positioning rod (710). The adjusting rod (71) vertically passes through the walking frame (11). A second fixed seat (72) is installed on the adjusting rod (71). A buffer spring (73) that abuts against the walking frame (11) is installed inside the second fixed seat (72). Under the elastic force of the buffer spring (73), the adjusting rod (71) moves upward. Two clamping nuts (74) are threadedly connected to the middle of the adjusting rod (71). A rail jaw clamping block (75) is installed on the adjusting rod (71) between the clamping nuts (74). A rail jaw clamping roller (76) that can rollingly contact the rail jaw is installed on the rail jaw clamping block (75). A rolling bearing (77) that rollingly contacts the rail web is installed at the lower end of the adjusting rod (71). A rotating handle (78) is rotatably installed at the upper end of the adjusting rod (71). A positioning opening is formed on the rotating handle (78). A positioning rod (710) that cooperates with the positioning opening is installed on the second fixed seat (72). The opening end of the rotating handle (78) is connected to the lower second fixed seat (72) through a first tension spring (79).

8. A multifunctional electric rail waist grinding machine according to claim 1, characterized in that: It further includes a measuring tape (9). A measuring tape (9) for positioning the grinding distance is installed at the front end of the walking frame (11).

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