Rail grinding equipment for railway maintenance

Abstract

The invention discloses rail grinding equipment for railway maintenance, the rail grinding equipment comprises a rack, a grinding head arranged on the rack and a shielding device arranged on the rack, and the shielding device comprises a shielding assembly arranged on the periphery of the grinding head and used for shielding sparks splashed by the grinding head in the grinding process; and the position adjusting mechanism is in driving connection with the shielding assembly and used for driving the shielding assembly to move, so that the shielding assembly is relatively close to or away from the grinding head. According to the embodiment of the invention, the shielding assembly is arranged on the periphery of the grinding head, so that sparks splashed by the grinding head in the grinding process can be shielded, and the safety of railway maintenance operation is improved. In addition, the shielding assembly can be driven by the position adjusting mechanism to move so as to be close to or away from the grinding head, and can adapt to rail grinding operation at the positions of straight rails, turning, turnouts and the like. Meanwhile, the polishing head can be conveniently replaced and maintained in the later period.

Description

Technical Field

[0001] The invention relates to the technical field of railway maintenance machinery, and in particular to a rail grinding device for railway maintenance. Background Art

[0002] Railways are tracks for trains and other vehicles to travel on. After being used for a long time, the rails are prone to rust and are easily attached with various impurities, affecting the safe operation of the trains. Grinding equipment is needed to grind and remove rust from the rails so that the rails can resume safer operation.

[0003] Railway maintenance workers usually use manual handheld electric grinders or angle grinders for grinding. The movement speed during operation is slow, which can easily damage the rails. Not only is the grinding speed low, but the grinding accuracy is also low.

[0004] In order to solve the above problems, a Chinese invention patent (application publication number: CN104389250A) discloses a grinding machine for railway rail waist, which includes a frame and a grinding device arranged on the frame, and the grinding wheel in the grinding device can grind the rail. The grinding machine can improve the grinding rate and grinding accuracy.

[0005] However, when the grinder is grinding the rail surface, the grinding wheel rotates at high speed and rubs against the rail surface, often generating a lot of sparks. Since the grinding wheel in the above-mentioned grinder is in an exposed state, the flying sparks may fall on the legs of the workers, causing burns to the workers. Summary of the invention

[0006] The invention provides a rail grinding device for railway maintenance, which can avoid scalding workers due to flying sparks when grinding the surface of the rail.

[0007] The present invention provides a rail grinding device for railway maintenance, the rail grinding device comprising a frame and a grinding head arranged on the frame, and a shielding device arranged on the frame, the shielding device comprising:

[0008] A shielding component, arranged at the periphery of the grinding head, for shielding sparks flying from the grinding head during the grinding process;

[0009] The position adjustment mechanism is drivingly connected to the shielding assembly, and the position adjustment mechanism is used to drive the shielding assembly to move so that the shielding assembly is relatively close to or far away from the grinding head.

[0010] Optionally, the shielding assembly includes a first baffle and a second baffle, the first baffle and the second baffle are respectively arranged on opposite sides of the grinding head, and are both drivingly connected to the position adjustment mechanism;

[0011] The position adjustment mechanism can drive the first baffle plate and the second baffle plate to move closer to or farther from each other, so as to achieve the first baffle plate and the second baffle plate to move closer to or farther from the grinding head synchronously.

[0012] Furthermore, the position adjustment mechanism includes a lead screw extending in the left-right direction of the frame and connected to the power component in a transmission manner, and the lead screw includes a first rod segment and a second rod segment connected in an axial direction;

[0013] The first rod section is provided with a first sleeve for transmission, and the first sleeve is fixedly installed with the first baffle;

[0014] The second rod section is provided with a second sleeve for transmission, and the second sleeve is fixedly installed with the second baffle.

[0015] Furthermore, the first rod segment and the second rod segment are coaxially fixedly connected and have opposite rotation directions.

[0016] Preferably, the power component is a second motor; and the position adjustment mechanism further comprises a reduction transmission assembly connected between the second motor and the lead screw.

[0017] Optionally, the shielding device further comprises a mounting frame, and the axial ends of the lead screw are arranged on the mounting frame;

[0018] The mounting frame is detachably connected to the frame, and the shielding device is detachably mounted on the frame through the mounting frame.

[0019] Optionally, the rail grinding equipment further comprises a lifting mechanism mounted on the frame, and a handrail frame drivingly connected to the lifting mechanism, wherein the lifting mechanism is suitable for driving the handrail frame to move up and down to adjust the height of the handrail frame.

[0020] Further, the lifting mechanism includes a telescopic rod assembly connected between the frame and the handrail frame, the telescopic rod assembly includes a telescopic rod and a sleeve extending in the up-down direction, and the sleeve is coaxially and telescopically sleeved on the telescopic rod;

[0021] The lifting mechanism further comprises a telescopic driving assembly for driving the telescopic rod assembly to axially extend and retract, and one of the sleeve and the telescopic rod is drivingly connected to the telescopic driving assembly.

[0022] Furthermore, the telescopic drive assembly comprises:

[0023] A rack extending along the axial direction of the telescopic rod and fixedly mounted on the telescopic rod;

[0024] The gear is rotatably mounted on the outer wall of the sleeve. The sleeve is provided with an avoidance groove. The gear extends into the sleeve through the avoidance groove and meshes with the rack for transmission. The gear can drive the rack to move up and down by rotating, thereby driving the telescopic rod to axially extend and retract relative to the sleeve.

[0025] Optionally, a guide wheel is provided at the bottom of the frame, a guide groove is provided on the guide wheel along the circumference, the guide groove is slidably matched with the rail, and the side walls of the guide groove are limited at opposite sides of the rail.

[0026] Compared with the prior art, the advantages of the present invention are:

[0027] 1. In the embodiment of the present invention, a shielding component is provided on the periphery of the grinding head, and the shielding component can shield the sparks splashed by the grinding head during the grinding process, so as to prevent the workers from being scalded by the sparks when the grinding head is grinding the rails. The shielding component can provide protection and improve the safety of railway maintenance operations.

[0028] In addition, the shielding component can be moved closer to or farther away from the grinding head under the drive of the position adjustment mechanism, and can adapt to rail grinding operations at positions such as straight rails, turns and switches.

[0029] For example, during grinding at a straight rail position, the shielding assembly can be brought close to the grinding head; while at rail bends and switch positions, in order to avoid interference between the shielding assembly and the rail, the position adjustment mechanism can be used to drive the shielding assembly to move toward the outside of the rail and away from the grinding head.

[0030] 2. In this embodiment, the relative positions of the first baffle and the second baffle can be adjusted. During the grinding process, the first baffle and the second baffle can be adjusted to be close to each other to a suitable position to effectively shield the flying sparks. Later, when the grinding head is repaired and replaced, the first baffle and the second baffle can be adjusted to be away from each other, thereby providing more sufficient operating space for replacing and maintaining the grinding head.

[0031] 3. The installation and use principles of the shielding device are basically as follows:

[0032] Before installation, the power component drives the lead screw to rotate in the opposite direction, so that the first baffle and the second baffle move away from each other on the lead screw until the two baffles move outward to the extreme position; then, the shielding device is placed downward from above the first motor and the grinding head, so that the first motor passes through the gap between the first baffle and the second baffle, and then the mounting frame is fixed on the frame; then, according to actual needs, the distance between the first baffle and the second baffle is adjusted to make the baffles close to or away from the grinding head, so as to adapt to the rail grinding operations at positions such as straight rails, turns and switches.

[0033] 4. The staff can push the handrail frame to push the rail grinding equipment forward along the track.

[0034] By operating the crank to rotate, the gear can be driven to rotate forward or reverse, so as to drive the rack meshing with the gear to move up and down, thereby driving the telescopic rod to move up and down, thereby the handrail frame can be easily and conveniently moved up and down to a suitable height according to the needs of the staff.

[0035] 5. The side wall of the limit groove is used to limit the limit block, thereby limiting the circumferential position of the telescopic rod to prevent the telescopic rod from circumferential movement and improve the movement stability of the telescopic rod when it moves in the up and down directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Hereinafter, the present invention will be described in more detail based on embodiments and with reference to the accompanying drawings.

[0037] Figure 1 It is a front view of the rail grinding equipment for railway maintenance after the first baffle is removed;

[0038] Figure 2 It is a top view of rail grinding equipment used for railway maintenance;

[0039] Figure 3 is a schematic diagram of the installation of the shielding device, the grinding head and the first motor on the frame;

[0040] Figure 4 yes Figure 3 Schematic diagram of the installation of the middle shielding device on the rack;

[0041] Figure 5 yes Figure 1 A partial enlarged view of the middle lifting mechanism;

[0042] Figure 6 yes Figure 5 Schematic diagram of the structure in the AA direction;

[0043] Figure 7 yes Figure 1 Schematic diagram of the installation structure of the middle guide wheel.

[0044] Reference numerals:

[0045] 1. Frame; 2. Grinding head; 3. First motor;

[0046] 4. Shielding device;

[0047] 41. Position adjustment mechanism; 411. Lead screw; 4111. First rod section; 4112. Second rod section; 412. First sleeve; 413. Second sleeve; 414. Second motor; 415. Driving wheel; 416. Driven wheel;

[0048] 42. Shielding assembly; 421. First baffle; 422. Second baffle;

[0049] 43. Mounting frame; 431. Connecting block;

[0050] 44. Connecting pin;

[0051] 5. Lifting mechanism;

[0052] 51. Telescopic rod assembly;

[0053] 511, telescopic rod; 5111, limiting block;

[0054] 512, casing; 5121, avoidance groove; 5122, limit groove;

[0055] 52. telescopic drive assembly; 521. gear; 522. rack;

[0056] 53. Bearing seat; 54. Mounting plate; 55. Crank handle;

[0057] 6. Handrails;

[0058] 7. guide wheel; 71. guide groove; 72. slot;

[0059] 8. Mounting seat; 81. Mounting cavity;

[0060] 9. Elastic latch assembly; 91. Latch; 92. Spring; 93. Guide rod. DETAILED DESCRIPTION

[0061] The present invention will be further described below in conjunction with the accompanying drawings.

[0062] An embodiment of the present invention provides a rail grinding device for railway maintenance, which includes a frame 1 and a grinding head 2 arranged on the frame 1 , and a shielding device 4 arranged on the frame 1 .

[0063] like Figures 1 to 4 As shown, the grinding head 2 is a grinding wheel, and a first motor 3 is arranged on the frame 1 above the grinding head 2. The output shaft of the first motor 3 is drivingly connected to the central rotating shaft of the grinding head 2. The grinding head 2 rotates at a high speed under the drive of the first motor 3 to grind the rails.

[0064] The shielding device 4 includes a shielding component 42 and a position adjustment mechanism 41 .

[0065] The shielding component 42 is arranged on the periphery of the grinding head 2 to shield the sparks flying during the grinding process of the grinding head 2 to prevent the grinding head 2 from scalding the workers due to the flying sparks when grinding the rails. The shielding component 42 can provide protection and improve the safety of railway maintenance operations.

[0066] The position adjustment mechanism 41 is drivingly connected to the shielding assembly 42 . The position adjustment mechanism 41 is used to drive the shielding assembly 42 to move so that the shielding assembly 42 is relatively close to or away from the grinding head 2 .

[0067] In this embodiment, the shielding assembly 42 can be displaced under the drive of the position adjustment mechanism 41 to be closer to or farther away from the grinding head 2, and can adapt to rail grinding operations at positions such as straight rails, turns and switches.

[0068] For example, during grinding at a straight rail position, the shielding assembly 42 can be moved close to the grinding head 2; and at rail bends and switch positions, in order to avoid interference between the shielding assembly 42 and the rail, the position adjustment mechanism 41 can be used to drive the shielding assembly 42 to move toward the outside of the rail and away from the grinding head 2.

[0069] like Figure 2 and Figure 3 As shown, in the embodiment of the present invention, the shielding assembly 42 includes a first baffle plate 421 and a second baffle plate 422, and the first baffle plate 421 and the second baffle plate 422 are respectively arranged on the left and right sides of the grinding head 2, and the first baffle plate 421 and the second baffle plate 422 are both driven and connected to the position adjustment mechanism 41; the position adjustment mechanism 41 can drive the first baffle plate 421 and the second baffle plate 422 to approach or move away from each other, so as to realize the first baffle plate 421 and the second baffle plate 422 to approach or move away from the grinding head 2 synchronously.

[0070] It should be noted that Figure 2 The direction of the middle arrow is the reciprocating direction of the first baffle 421 and the second baffle 422 .

[0071] In this embodiment, the relative positions of the first baffle 421 and the second baffle 422 can be adjusted. During the grinding process, the first baffle 421 and the second baffle 422 can be adjusted to be close to each other to a suitable position to effectively shield the flying sparks; later when the grinding head 2 is repaired and replaced, the first baffle 421 and the second baffle 422 can be adjusted to be away from each other, thereby providing more sufficient operating space for replacing and maintaining the grinding head 2.

[0072] The first baffle 421 and the second baffle 422 are symmetrically arranged about the center line of the rack 1 .

[0073] like Figure 4As shown, in the embodiment of the present invention, the position adjustment mechanism 41 includes a lead screw 411 extending along the left-right direction of the frame 1 and transmission connected to the power component, the lead screw 411 includes a first rod segment 4111 and a second rod segment 4112 connected along the axial direction; the first rod segment 4111 is transmission-arranged with a first sleeve 412, and the first sleeve 412 is fixedly installed with the first baffle 421; the second rod segment 4112 is transmission-arranged with a second sleeve 413, and the second sleeve 413 is fixedly installed with the second baffle 422.

[0074] In the embodiment of the present invention, the first rod segment 4111 and the second rod segment 4112 are coaxially fixedly connected and have opposite rotation directions. The lead screw 411 is a bidirectional threaded rod.

[0075] It can be understood that when the power component drives the lead screw 411 to rotate around the central axis of the lead screw 411, since the first rod segment 4111 and the second rod segment 4112 rotate in opposite directions, the first sleeve 412 disposed on the first rod segment 4111 and the second sleeve 413 disposed on the second rod segment 4112 respectively move in opposite directions along the axial direction of the lead screw 411, that is, the first sleeve 412 and the second sleeve 413 move closer to or farther from each other, so that the first baffle 421 fixed on the first sleeve 412 and the second baffle 422 fixed on the second sleeve 413 move closer to or farther from each other. Optionally, the power component is the second motor 414.

[0076] Specifically, Figure 4 As shown, the second motor 414 drives the lead screw 411 to rotate forward, the first rod segment 4111 and the second rod segment 4112 rotate forward at the same time, the first rod segment 4111 drives the first sleeve 412 to move right along the axial direction, and the first sleeve 412 drives the first baffle 421 to move right to approach the second baffle 422 and the grinding head 2 located on the right side; at the same time, the second rod segment 4112 drives the second sleeve 413 to move left along the axial direction, and the second sleeve 413 drives the second baffle 422 to move left to approach the first baffle 421 and the grinding head 2 located on the left side.

[0077] Similarly, when the second motor 414 drives the lead screw 411 to rotate in the reverse direction, the first baffle 421 and the second baffle 422 move away from each other and are respectively away from the grinding head 2 .

[0078] It should be noted that Figure 4 The direction of the middle arrow cc is the reciprocating direction of the first baffle 421 and the second baffle 422 .

[0079] Optionally, the position adjustment mechanism 41 further includes a reduction transmission assembly connected between the second motor 414 and the lead screw 411 .

[0080] Preferably, the reduction transmission assembly includes a driving wheel 415 and a driven wheel 416 meshing with each other, the driving wheel 415 is coaxially and fixedly arranged on the output shaft of the second motor 414 , and the driven wheel 416 is coaxially and fixedly arranged on the lead screw 411 .

[0081] The second motor 414 drives the driving wheel 415 to rotate, so as to drive the driven wheel 416 meshing with the driving wheel 415 to rotate, thereby driving the lead screw 411 to rotate.

[0082] Preferably, the driving wheel 415 and the driven wheel 416 are bevel gears.

[0083] Preferably, the driven wheel 416 is located between the first rod segment 4111 and the second rod segment 4112 .

[0084] like Figure 4 As shown, the shielding device 4 further includes a mounting frame 43 , and the axial ends of the lead screw 411 are rotatably mounted on the mounting frame 43 ; the mounting frame 43 is detachably connected to the frame 1 .

[0085] Optionally, a connecting block 431 is formed on the bottom wall of the mounting frame 43 , and the connecting block 431 is detachably connected to the side wall of the frame 1 via a connecting pin 44 , and the shielding device 4 is detachably mounted on the frame 1 via the connecting block 431 on the mounting frame 43 .

[0086] like Figures 1 to 4 As shown, the installation and use principles of the shielding device 4 are basically as follows:

[0087] Before installation, the second motor 414 drives the lead screw 411 to rotate in the opposite direction, so that the first baffle 421 and the second baffle 422 move away from each other on the lead screw 411 until the two baffles move outward to the extreme position; then, the shielding device 4 is placed downward from above the first motor 3 and the grinding head 2, so that the first motor 3 passes through the gap between the first baffle 421 and the second baffle 422, and then the mounting frame 43 is fixedly installed on the frame 1; then, according to actual needs, the distance between the first baffle 421 and the second baffle 422 is adjusted to make the baffles close to or away from the grinding head 2, so as to adapt to the rail grinding operations at positions such as straight rails, turns and switches.

[0088] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, in the embodiment of the present invention, the rail grinding equipment also includes a lifting mechanism 5 installed on the frame 1, and a handrail frame 6 drivingly connected to the lifting mechanism 5, and the lifting mechanism 5 is suitable for driving the handrail frame 6 to move up and down to adjust the height of the handrail frame 6.

[0089] In the embodiment of the present invention, the lifting mechanism 5 includes a telescopic rod assembly 51 connected between the frame 1 and the handrail frame 6. It should be noted that: Figure 1 The direction of the middle arrow aa is the telescopic direction of the telescopic rod assembly 51.

[0090] The telescopic rod assembly 51 includes a telescopic rod 511 and a sleeve 512 extending in the up-down direction, and the sleeve 512 is coaxially and telescopically sleeved on the telescopic rod 511; the lifting mechanism 5 also includes a telescopic driving assembly 52 for driving the telescopic rod assembly 51 to axially extend and retract, and one of the sleeve 512 and the telescopic rod 511 is drivingly connected to the telescopic driving assembly 52.

[0091] The telescopic driving assembly 52 includes a gear 521 and a rack 522 that mesh with each other.

[0092] The rack 522 extends along the axial direction of the telescopic rod 511 and is fixedly mounted on the telescopic rod 511; the gear 521 is rotatably mounted on the outer wall of the sleeve 512, and an avoidance groove 5121 is provided on the sleeve 512. The gear 521 extends into the sleeve 512 through the avoidance groove 5121 and meshes with the rack 522 for transmission. The gear 521 can drive the rack 522 to move up and down by rotating, thereby driving the telescopic rod 511 to axially extend and retract relative to the sleeve 512.

[0093] The rotating shaft of the gear 521 is rotatably disposed on the bearing seat 53 , the bearing seat 53 is fixed on the mounting plate 54 , and the mounting plate 54 is fixed on the outer wall of the sleeve 512 .

[0094] The rotating shaft of the gear 521 is coaxially fixedly connected to the crank 55. By operating the crank 55, the gear 521 can be driven to rotate forward or reverse, so as to drive the rack 522 meshing with the gear 521 to move up and down, thereby driving the telescopic rod 511 to move up and down, thereby the handrail frame 6 can be easily and conveniently moved up and down to a suitable height according to the needs of the staff.

[0095] The staff can push the handrail frame 6 to push the rail grinding device as a whole forward along the track.

[0096] It should be noted that Figure 1 The direction of the middle arrow bb refers to the forward and backward direction of the rail grinding equipment.

[0097] like Figure 1 , Figure 5 and Figure 6As shown, preferably, a limiting groove 5122 extending along the axial direction of the sleeve 512 is provided on the inner wall of the sleeve 512, and a limiting block 5111 is correspondingly provided on the outer wall of the telescopic rod 511. The limiting block 5111 on the telescopic rod 511 is embedded in the limiting groove 5122 on the sleeve 512, and the side wall of the limiting groove 5122 is used to limit the limiting block 5111, thereby circumferentially limiting the telescopic rod 511 to avoid circumferential movement of the telescopic rod 511 and improve the movement stability of the telescopic rod 511 when moving in the up and down directions.

[0098] The limiting grooves 5122 are arranged in at least two groups, and the at least two groups of limiting grooves 5122 are arranged at intervals along the circumference of the sleeve 512 . The limiting blocks 5111 are also correspondingly arranged in at least two groups, and the limiting blocks 5111 correspond to the limiting grooves 5122 one by one.

[0099] like Figure 1 and Figure 7 As shown, in this embodiment, a guide wheel 7 is provided at the bottom of the frame 1, and a guide groove 71 is provided on the guide wheel 7 along the circumference. The guide groove 71 is slidably matched with the rail, and the side walls of the guide groove 71 are limited at opposite sides of the rail.

[0100] The guide wheel 7 is detachably mounted on the bottom of the frame 1 .

[0101] Specifically, a mounting seat 8 for mounting the guide wheel 7 is provided at the bottom of the frame 1, and a mounting cavity 81 is opened on the mounting seat 8 on the side facing the guide wheel 7, and the guide wheel 7 is at least partially embedded in the mounting cavity 81; elastic latch assemblies 9 are respectively provided on the mounting seat 8 at both axial ends of the guide wheel 7, and the ends of the elastic latch assemblies 9 extend into the slots 72 on the guide wheel 7 to install the guide wheel 7.

[0102] The elastic latch assembly 9 includes a latch 91 that penetrates the side wall of the mounting seat 8, and a spring 92 that is disposed on the mounting seat 8 and applies elastic force to the latch 91. One end of the spring 92 abuts against the mounting seat 8, and the other end abuts against the latch 91 and applies elastic force to the latch 91 that tends to move into the mounting cavity 81. The latch 91 extends into the slot 72 on the guide wheel 7 under the action of the spring 92.

[0103] The elastic latch assembly 9 also includes a guide rod 93 extending along the axial direction of the latch 91, and the spring 92 is sleeved on the guide rod 93. The spring 92 deforms along the guide rod 93 during compression deformation and reset, thereby ensuring the stability of the latch 91 during the extension and retraction process.

[0104] Installation and removal process of guide wheel 7: pull the latches 91 on both sides of mounting seat 8 outward, and the springs 92 are compressed and deformed under the pressure of the latches 91 until the latches 91 are disengaged from the slots 72 on the guide wheel 7, and then the guide wheel 7 can be removed. Place a new guide wheel 7 into the mounting cavity 81 of the mounting seat 8, release the latches 91, and the latches 91 are reset under the elastic force of the springs 92, and the latches 91 extend into the slots 72 on the guide wheel 7, so that the guide wheel 7 can be removed and installed, so as to facilitate the quick replacement of the guide wheel 7.

[0105] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A rail grinding device for railway maintenance, characterized in that: The invention comprises a frame and a grinding head arranged on the frame, and a shielding device arranged on the frame, wherein the shielding device comprises: A shielding component, arranged at the periphery of the grinding head, for shielding sparks flying from the grinding head during the grinding process; The position adjustment mechanism is drivingly connected to the shielding assembly, and the position adjustment mechanism is used to drive the shielding assembly to move so that the shielding assembly is relatively close to or far away from the grinding head.

2. The rail grinding equipment for railway maintenance according to claim 1, characterized in that: The shielding assembly includes a first baffle and a second baffle, the first baffle and the second baffle are respectively arranged on opposite sides of the grinding head and are both drivingly connected to the position adjustment mechanism; The position adjustment mechanism can drive the first baffle plate and the second baffle plate to move closer to or farther from each other, so as to achieve the first baffle plate and the second baffle plate to move closer to or farther from the grinding head synchronously.

3. The rail grinding equipment for railway maintenance according to claim 2, characterized in that: The position adjustment mechanism comprises a lead screw extending in the left-right direction of the frame and connected to the power component in a transmission manner, wherein the lead screw comprises a first rod segment and a second rod segment connected in an axial direction; The first rod segment is provided with a first sleeve for transmission, and the first sleeve is fixedly installed with the first baffle; The second rod section is provided with a second sleeve for transmission, and the second sleeve is fixedly installed with the second baffle.

4. The rail grinding equipment for railway maintenance according to claim 3, characterized in that: The first rod segment and the second rod segment are coaxially fixedly connected and have opposite rotation directions.

5. The rail grinding equipment for railway maintenance according to claim 3, characterized in that: The power component is a second motor; the position adjustment mechanism also includes a reduction transmission assembly connected between the second motor and the lead screw.

6. The rail grinding equipment for railway maintenance according to any one of claims 3 to 5, characterized in that: The shielding device further comprises a mounting frame, and the axial ends of the lead screw are arranged on the mounting frame; The mounting frame is detachably connected to the frame, and the shielding device is detachably mounted on the frame through the mounting frame.

7. The rail grinding equipment for railway maintenance according to any one of claims 1 to 5, characterized in that: It also includes a lifting mechanism installed on the frame, and an armrest frame drivingly connected to the lifting mechanism, wherein the lifting mechanism is suitable for driving the armrest frame to move up and down to adjust the height of the armrest frame.

8. The rail grinding equipment for railway maintenance according to claim 7, characterized in that: The lifting mechanism comprises a telescopic rod assembly connected between the frame and the handrail frame, the telescopic rod assembly comprises a telescopic rod and a sleeve extending in the up-down direction, and the sleeve is coaxially and telescopically sleeved on the telescopic rod; The lifting mechanism further comprises a telescopic driving assembly for driving the telescopic rod assembly to axially extend and retract, and one of the sleeve and the telescopic rod is drivingly connected to the telescopic driving assembly.

9. The rail grinding equipment for railway maintenance according to claim 8, characterized in that: The telescopic drive assembly comprises: A rack extending along the axial direction of the telescopic rod and fixedly mounted on the telescopic rod; The gear is rotatably mounted on the outer wall of the sleeve. The sleeve is provided with an avoidance groove. The gear extends into the sleeve through the avoidance groove and meshes with the rack for transmission. The gear can drive the rack to move up and down by rotating, thereby driving the telescopic rod to axially extend and retract relative to the sleeve.

10. The rail grinding equipment for railway maintenance according to claim 1, characterized in that: A guide wheel is arranged at the bottom of the frame, a guide groove is arranged on the guide wheel along the circumference, the guide groove is slidably matched with the rail, and the side walls of the guide groove are limited at two opposite sides of the rail.

Images