CN113123182A - Steel rail cambered surface grinding trolley and steel rail grinding vehicle - Google Patents

Abstract

The invention discloses a rail cambered surface grinding trolley and a rail grinding wagon, wherein the trolley comprises: the rail grinding device comprises a frame and a rail grinding unit arranged on the frame. The rail grinding unit includes: a traversing mechanism; the output shaft of the grinding motor is connected with the grinding wheel, and the steel rail is ground through the outer circumference of the grinding wheel; the polishing unit frame is used for installing a polishing motor and can be movably connected to the transverse moving mechanism, and the transverse moving mechanism can drive the polishing motor to realize transverse moving operation; the deflection mechanism is connected between the polishing unit frame and the polishing motor, and deflection operation is realized by the deflection mechanism through the energy band polishing motor; and the pressing mechanism is connected between the deflection mechanism and the polishing motor, and can drive the polishing motor to realize lifting and pressing operations through the pressing mechanism. The invention can solve the technical problems that the prior grinding trolley cannot fully grind the profile surface of the steel rail, cannot normally pass through a turnout area, has a complex structure and has a limited grinding deflection angle.

Description

Steel rail cambered surface grinding trolley and steel rail grinding vehicle

Technical Field

The invention relates to the technical field of rail engineering machinery, in particular to a rail cambered surface grinding trolley and a rail grinding wagon.

Background

The grinding trolley is an actuating mechanism for grinding operation, is a key component of a steel rail grinding train, and has important position and function on the grinding train. Meanwhile, the grinding action, quality, efficiency, the advancement of the grinding process and the like required by the grinding train are finally embodied by the grinding trolley. The most central part of the grinding trolley is the grinding unit, and the grinding unit directly acts on the steel rail to realize grinding operation, so that the mechanism design, the reasonability and the action accuracy of the grinding unit are very important.

At present, most of domestic rail grinding mills grind a rail 23 fixed on a sleeper 24 by using a grinding stone plane, as shown in figure 1. In the method, the grinding motor 10 drives the grinding wheel 9 to rotate to grind the rail surface of the steel 23, but the grinding mode is easy to cause insufficient grinding of the profile surface and the profile surface has a plurality of continuous small tangent planes. In addition, the wave wear damage cannot be removed, and the surface roughness of the rail after grinding is large, generally 10 micrometers or less. In particular, in the vicinity of facilities such as turnout areas, for example, guard rails, greasers and the like, the diameter ratio of the grinding wheel disk is large, generally about 260mm, and the grinding wheel also needs to perform a deflection action, so that the grinding stone is easy to touch obstacles on two sides of the rail during grinding. Therefore, before grinding, the equipment on two sides of the steel rail is frequently required to be removed, the operation difficulty is high, and the time is very long.

Disclosure of Invention

In view of the above, the invention aims to provide a rail cambered surface grinding trolley and a rail grinding wagon, so as to solve the technical problems that the conventional grinding trolley cannot fully grind a rail profile surface, cannot normally pass through a turnout area, has a complex structure and is limited in grinding deflection angle.

In order to achieve the above object, the present invention specifically provides a technical implementation scheme of a rail arc surface grinding trolley, wherein the rail arc surface grinding trolley is arranged at the bottom of a rail grinding trolley, and comprises:

the steel rail grinding device comprises a frame and a steel rail grinding unit arranged on the frame;

the rail grinding unit includes:

a traversing mechanism;

the output shaft of the grinding motor is connected with a grinding wheel, and the steel rail is ground through the outer circumference of the grinding wheel;

the polishing unit frame is used for mounting the polishing motor and can be movably connected to the transverse moving mechanism, and the transverse moving mechanism can drive the polishing motor to realize transverse moving operation;

the deflection mechanism is connected between the polishing unit frame and the polishing motor, and deflection operation is realized by the deflection mechanism through the energy band polishing motor;

and the pressing mechanism is connected between the deflection mechanism and the grinding motor, and can drive the grinding motor to realize lifting and pressing operations through the pressing mechanism.

Furthermore, the transverse moving mechanism comprises a transverse moving guide pillar, a transverse moving guide sleeve and a transverse moving driving mechanism, and the polishing unit frame is movably installed on the transverse moving guide pillar through the transverse moving guide sleeve. One end of the transverse moving driving mechanism is installed on the polishing unit frame, and the other end of the transverse moving driving mechanism is installed on a frame of the steel rail cambered surface polishing trolley. The transverse moving driving mechanism drives the polishing unit frame to move on the transverse moving guide post, and then drives the polishing motor and the polishing grinding wheel to move in the transverse direction of the steel rail.

Furthermore, the pressing mechanism comprises a pressing guide sleeve, a pressing guide pillar and a pressing driving mechanism, the lower part of the pressing guide pillar is provided with a motor mounting seat, and the upper part of the pressing guide pillar is fixed with the polishing motor through a connecting disc. One end of the pressing-down driving mechanism is connected with the pressing-down guide sleeve, the other end of the pressing-down driving mechanism is connected with the connecting disc, and the pressing-down driving mechanism drives the grinding motor to move up and down in the vertical direction so as to drive the grinding wheel connected with the grinding motor to move up and down.

Furthermore, the deflection mechanism comprises a deflection driving mechanism and a deflection frame, one end of the deflection driving mechanism is fixed on the polishing unit frame, and the other end of the deflection driving mechanism is connected with the deflection frame. The deflection frame and the lower pressure guide sleeve are connected into a whole and extend towards the left side and the right side, one side of the deflection frame is hinged with the polishing unit frame, and the other side of the deflection frame is hinged to the polishing unit frame, extends outwards and is hinged with the movable end of the deflection driving mechanism. The deflection driving mechanism drives the polishing motor and the polishing grinding wheel to perform deflection motion.

Further, two rail grinding units are installed along the operation direction on the frame, wherein the grinding wheel working surface of each rail grinding unit located on the same side corresponds to one section of arc surface of the rail, and the enveloping of the whole grinding surface of the single-side rail is realized through the grinding wheel combination of the plurality of rail grinding units on the single side.

Furthermore, at least 5 rail grinding units are installed on one side of the vehicle frame, and the working surface of a grinding wheel of each rail grinding unit comprises a middle R300, two sides R80 and an arc surface of R13 near a rail head.

Furthermore, 5 rail polishing units, namely a first polishing unit, a second polishing unit, a third polishing unit, a fourth polishing unit and a fifth polishing unit are sequentially arranged on one side of the frame along the longitudinal direction. The outer circumferential surface of the grinding wheel of the first grinding unit is provided with an R13 arc surface for grinding the R13 arc surface on the outer side of the rail head of the steel rail. And an arc surface of R80 is processed on the outer circumferential surface of the grinding wheel of the second grinding unit and is used for grinding the arc surface of the R80 outside the rail head of the steel rail. And the outer circumferential surface of the grinding wheel of the third grinding unit is processed with an R300 arc surface for grinding the R300 arc surface in the middle of the rail head of the steel rail. And an arc surface of R80 is processed on the outer circumferential surface of the grinding wheel of the fourth grinding unit and is used for grinding the arc surface of R80 on the inner side of the rail head of the steel rail. And an arc surface of R13 is processed on the outer circumferential surface of the grinding wheel of the fifth grinding unit and is used for grinding the arc surface of R13 on the inner side of the rail head of the steel rail.

Furthermore, 5 rail polishing units, namely a first polishing unit, a second polishing unit, a third polishing unit, a fourth polishing unit and a fifth polishing unit are sequentially arranged on one side of the frame along the longitudinal direction. The outer circumferential surface of the grinding wheel of the first grinding unit is provided with an R13 arc surface for grinding the R13 arc surface on the inner side of the rail head of the steel rail. And an arc surface of R80 is processed on the outer circumferential surface of the grinding wheel of the second grinding unit and is used for grinding the arc surface of R80 on the inner side of the rail head of the steel rail. And the outer circumferential surface of the grinding wheel of the third grinding unit is processed with an R300 arc surface for grinding the R300 arc surface in the middle of the rail head of the steel rail. And an arc surface of R80 is machined on the outer circumferential surface of the grinding wheel of the fourth grinding unit and is used for grinding the arc surface of R80 on the outer side of the rail head of the steel rail. And an arc surface of R13 is machined on the outer circumferential surface of the grinding wheel of the fifth grinding unit and is used for grinding the arc surface of R13 on the outer side of the rail head of the steel rail.

Furthermore, the output shaft of the grinding motor is connected with the grinding wheel through a transmission case. One end of the transmission case is connected with the motor shaft, the other end of the transmission case is connected with the grinding wheel mounting disc, and the grinding wheel is fixed on the grinding wheel mounting disc. The transmission case comprises a protective cover, and a first transmission gear and a second transmission gear which are arranged on the protective cover, wherein the first transmission gear is connected with a motor shaft, and the second transmission gear is connected with a grinding wheel rotating shaft. The grinding motor outputs power which is transmitted into the transmission box through the motor shaft and transmitted to the grinding wheel rotating shaft in a reversing mode through the first transmission gear and the second transmission gear which are meshed with each other, and therefore the grinding wheel is driven to rotate tangentially.

Further, the traction mechanism adopts a vertical installation structure.

Further, the thickness of the grinding wheel is 20 mm-60 mm.

The invention also provides a technical implementation scheme of the rail grinding wagon, which comprises the following steps:

a vehicle body;

and the rail cambered surface grinding trolley is arranged at the lower part of the trolley body.

Further, a car door locking sensor is installed on a car frame of the steel rail cambered surface grinding trolley, and a sensor induction plate is installed on a car door of the fireproof and dustproof device. When the car door is opened, the sensor induction plate is far away from the car door locking sensor, the steel rail grinding wagon obtains a car door locking signal, and the steel rail grinding wagon is forbidden to run. When the vehicle door is closed, the sensor induction plate is close to the vehicle door locking sensor, the steel rail grinding wagon obtains a driving permission signal, and the steel rail grinding wagon allows operation walking.

By implementing the technical scheme of the steel rail cambered surface grinding trolley and the steel rail grinding wagon provided by the invention, the steel rail cambered surface grinding trolley has the following beneficial effects:

(1) according to the rail cambered surface grinding trolley and the rail grinding wagon, the grinding wheel cambered surfaces are adopted for grinding the rail cambered surfaces, the structure is simple, the grinding deflection angle is large, the profile surfaces of the rails can be fully ground, the wave grinding problem caused by the traditional grinding wheel plane grinding is effectively reduced, and meanwhile, the rail cambered surface grinding trolley and the rail grinding wagon have the design of a pressing, deflecting and traversing mechanism, can be used for grinding without touching obstacles on two sides of the rails, can meet the railway normal line grinding requirement, and can also be used for grinding turnouts;

(2) according to the rail cambered surface grinding trolley and the rail grinding wagon, a modularized grinding unit design is adopted, the grinding unit frame adopts a crank arm structure, the grinding motor adopts a vertical installation mode, the grinding direction is converted through the transmission case, the posture of the grinding motor can be independently controlled, the arrangement is flexible, the grinding angle range is large, the simplified structural design is adopted, and the requirements of small-size layout and small-space installation can be met;

(3) according to the rail cambered surface grinding trolley and the rail grinding wagon, the combined rail grinding units are adopted, the enveloping grinding of the surface of the rail is realized through 1 to 5 cambered surface grinding units, the rail surface of the rail can be completely covered, the problem of small planes caused by the traditional grinding wheel plane grinding is effectively solved, and the surface roughness of the ground rail can be below 5 micrometers; the grinding wheel has high cutting and grinding capacity and good abrasive particle self-sharpening performance, and the continuously generated abrasive dust can take away a large amount of heat, so that the temperature of the steel rail is effectively controlled to prevent the steel rail from generating a grinding bluing phenomenon;

(4) according to the rail cambered surface grinding trolley and the rail grinding wagon, the grinding trolley adopts an operation linkage control mode, a detection signal can be given when a door is opened and closed, and when the door is opened, the grinding wagon cannot run a motor car, so that the technical problem that serious potential safety hazards are brought to maintenance detection personnel when an operator of the grinding wagon starts a running vehicle when the traditional rail grinding wagon performs internal inspection and maintenance on the grinding trolley is solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, from which other embodiments can be derived by a person skilled in the art without inventive effort.

FIG. 1 is a schematic diagram of a prior art grinding method using a grinding wheel for end face grinding;

FIG. 2 is a right side elevational view in schematic form of one embodiment of a rail grinding unit upon which the present invention is based;

FIG. 3 is a front elevational view in schematic form of one embodiment of a rail grinding unit upon which the present invention is based;

FIG. 4 is a left side elevational view of a schematic of the construction of one embodiment of a rail grinding unit upon which the present invention is based;

FIG. 5 is a partially enlarged schematic view of portion A of FIG. 4;

FIG. 6 is a rear elevational view in schematic form of one embodiment of a rail grinding unit upon which the present invention is based;

FIG. 7 is a top schematic view of the structure of one embodiment of a rail grinding unit on which the present invention is based;

figure 8 is a schematic perspective view of one embodiment of a rail grinding unit on which the present invention is based;

figure 9 is a schematic perspective view of an embodiment of a rail grinding unit on which the present invention is based, from another perspective;

FIG. 10 is a schematic view of the grinding principle of one embodiment of a rail grinding unit on which the present invention is based in state one;

FIG. 11 is a schematic illustration of the grinding principle of one embodiment of a rail grinding unit on which the present invention is based in State two;

FIG. 12 is a schematic view of the grinding principle of one embodiment of a rail grinding unit on which the present invention is based in State three;

FIG. 13 is a schematic structural view of a circular arc surface of the top surface of a rail according to the present invention;

FIG. 14 is a schematic view of a grinding wheel assembly in one embodiment of a rail grinding unit on which the present invention is based;

FIG. 15 is a schematic structural view of one embodiment of the rail cambered surface grinding wagon of the present invention;

FIG. 16 is a schematic structural view of the rail cambered surface grinding wagon of the present invention after the fireproof and dustproof device is removed;

FIG. 17 is a front elevational view of a schematic configuration of one embodiment of the rail cambered surface grinding carriage of the present invention;

fig. 18 is a partially enlarged structural view of a portion B in fig. 17;

FIG. 19 is a schematic perspective view of one embodiment of the rail cambered surface grinding cart of the present invention;

FIG. 20 is a schematic view of the layout of the grinding wheel in one embodiment of the rail cambered surface grinding carriage of the present invention;

FIG. 21 is a schematic view of the layout of a grinding wheel in another embodiment of the rail cambered surface grinding carriage of the present invention;

FIG. 22 is a schematic structural view of one embodiment of the rail grinding wagon of the present invention;

in the figure: 1-traversing guide post, 2-traversing guide sleeve, 3-grinding unit rack, 4-pushing guide sleeve, 5-pushing guide post, 6-traversing drive mechanism, 7-pushing drive mechanism, 8-deflecting drive mechanism, 9-grinding wheel, 10-grinding motor, 11-motor mount, 12-connecting disk, 13-deflecting rack, 14-transmission box, 15-protective cover, 16-first transmission gear, 17-motor shaft, 18-grinding wheel rotating shaft, 19-grinding wheel mounting disk, 20-second transmission gear, 21-connecting beam, 22-mount, 23-rail, 24-sleeper, 25-top soft curtain, 26-vehicle door, 27-bottom soft curtain, 28-lifting mechanism, 29-traction mechanism, 30-traveling wheels, 31-vehicle door locking sensors, 32-sensor induction plates, 33-arm supports, 34-rib plates, 100-steel rail polishing units, 101-first polishing units, 102-second polishing units, 103-third polishing units, 104-fourth polishing units, 105-fifth polishing units, 200-steel rail cambered surface polishing trolleys, 300-vehicle frames, 400-steel rail polishing vehicles, 500-fireproof and dustproof devices and 600-vehicle bodies.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 22, embodiments of a rail cambered surface grinding carriage and a rail grinding wagon according to the present invention are shown, and the present invention will be further described with reference to the drawings and the embodiments.

Example 1

As shown in fig. 2 to 12, an embodiment of a rail grinding unit 100 according to the present application specifically includes:

a traversing mechanism;

a grinding motor 10, an output shaft of which is connected with the grinding wheel 9, and the rail 23 is ground through the outer circumference of the grinding wheel 9;

the polishing unit frame 3 is used for installing the polishing motor 10 and can be movably connected to the transverse moving mechanism, and the transverse moving mechanism can drive the polishing motor 10 to realize transverse moving operation;

the deflection mechanism is connected between the polishing unit frame 3 and the polishing motor 10, and the deflection operation is realized by the deflection mechanism through the energy band polishing motor 10;

and the pressing mechanism is connected between the deflection mechanism and the grinding motor 10, and the grinding motor 10 can be driven by the pressing mechanism to realize lifting and pressing operations.

Wherein, the outer circumference of the grinding wheel 9 is processed into a grinding working surface corresponding to the rail head cambered surface of the steel rail 23. The grinding motor 10 further adopts a vertical installation structure, the working surface of the grinding wheel 9 is an outer circumferential surface, and the installation direction of the grinding motor 10 is parallel to the rotating working surface of the grinding wheel 9.

The transverse moving mechanism further comprises a transverse moving guide pillar 1, a transverse moving guide sleeve 2 and a transverse moving driving mechanism 6, and the polishing unit frame 3 is movably installed on the transverse moving guide pillar 1 through the transverse moving guide sleeve 2. One end of the transverse moving driving mechanism 6 is arranged on the polishing unit frame 3, and the other end is arranged on the frame 300 of the rail cambered surface polishing trolley 200. The transverse driving mechanism 6 drives the polishing unit frame 3 to move on the transverse guide post 1 along the direction L shown in the attached drawings 8-12, and then drives the polishing motor 10 and the polishing grinding wheel 9 to move in the transverse direction of the steel rail 23.

The pressing mechanism further comprises a pressing guide post 4, a pressing guide sleeve 5 and a pressing driving mechanism 7, a motor mounting seat 11 is arranged at the lower part of the pressing guide post 4, and the upper part of the pressing guide post 4 is fixed with a polishing motor 10 through a connecting disc 12. The grinding motor 10 is fixed on the motor mounting seat 11, the motor mounting seat 11 is connected with the lower pressing guide pillar 4 through a bolt, and the upper part of the lower pressing guide pillar 4 is fixed with the grinding motor 10 through a connecting disc 12. One end of the downward pressing driving mechanism 7 is connected with the downward pressing guide sleeve 5, the other end of the downward pressing driving mechanism 7 is connected with the connecting disc 12, and the downward pressing driving mechanism 7 drives the grinding motor 10 to move up and down in the vertical direction (the direction shown as H in the attached drawings 8-12), so that the grinding wheel 9 connected with the grinding motor 10 through the transmission case 14 is driven to move up and down. The pressing guide pillars 4 in the rail grinding unit 100 may be arranged in a structure of two or more. The upper ends of the two lower guide pillars 4 are connected through the connecting disc 12, and the lower ends of the two lower guide pillars are not provided with the connecting disc 12, so that the steel rail grinding unit 100 can have more sufficient movement space, and the grinding requirements of the profiles and angles of various steel rails 23 are met.

The deflection mechanism further comprises a deflection driving mechanism 8 and a deflection frame 13, one end of the deflection driving mechanism 8 is fixed on the grinding unit frame 3, and the other end is connected with the deflection frame 13. The deflection frame 13 is connected (welded) with the lower pressure guide sleeve 5 into a whole and extends towards the left side and the right side, one side of the deflection frame 13 is hinged with the polishing unit frame 3, and the other side of the deflection frame is hinged to the polishing unit frame 3, extends outwards and is hinged with the movable end of the deflection driving mechanism 8. Therefore, the grinding motor 10 and the grinding wheel 9 can be driven by the deflection driving mechanism 8 to perform deflection motion along the direction W shown in fig. 8 to 12.

The grinding unit frame 3 further comprises two arm supports 33 which are parallel to each other and are arranged oppositely along the longitudinal direction and adopt a hollow crank arm structure, each arm support 33 comprises two rib plates 34 which are parallel to each other and are arranged oppositely along the longitudinal direction, the transverse guide sleeve 2 is connected to the upper parts of the two rib plates 28, and the deflection driving mechanism 8 is arranged between the two rib plates 34 of one grinding unit frame 3, so that the transverse width size of the steel rail grinding unit 100 is reduced, and the layout and the size of the whole steel rail grinding wagon 400 are facilitated.

The output shaft of the grinding motor 10 is further connected to the grinding wheel 9 via a transmission case 14. As shown in fig. 5, one end of the transmission case 14 is connected to the motor shaft 17, the other end is connected to the wheel mounting plate 19, and the grinding wheel 9 is fixed to the wheel mounting plate 19. The transmission box 14 comprises a protective cover 15, and a first transmission gear 16 and a second transmission gear 20 which are arranged on the protective cover 15, wherein the first transmission gear 16 is connected with a motor shaft 17, and the second transmission gear 20 is connected with a grinding wheel rotating shaft 18. The output power of the grinding motor 10 is transmitted into the transmission box 14 through the motor shaft 17, and is transmitted to the grinding wheel rotating shaft 18 through the first transmission gear 16 and the second transmission gear 20 which are meshed with each other in a reversing way, so that the grinding wheel 9 is driven to rotate tangentially. The whole steel rail grinding unit 100 is very compact in structural layout, the grinding motor 10 and the cambered surface grinding wheel 9 are mounted up and down, power reversing transmission is performed by the transmission case 14, the width size of the steel rail grinding unit 100 is greatly reduced, the requirements of small-size layout and small-space mounting can be well met, the space layout and the size design of the whole steel rail grinding wagon 400 are facilitated, and the curve trafficability and the dynamic performance of the steel rail grinding wagon 400 are facilitated.

The transverse guide pillar 1 is further fixedly arranged on a frame 300 of the rail cambered surface polishing trolley 200 through a mounting seat 22, the transverse guide sleeves 2 are connected with the top of the polishing unit frame 3, and a connecting beam 21 is arranged between the two transverse guide sleeves 2.

The thickness of the grindstone 9 is further 20mm to 60mm, and the working surface of the grindstone 9 is processed into any one of R300, R80, and R13 circular arc surfaces.

The transverse moving driving mechanism 6, the pressing driving mechanism 7 and the deflecting driving mechanism 8 can adopt any one of an oil cylinder, an air cylinder, a motor or other driving modes. Meanwhile, the traverse driving mechanism 6, the down-pressing driving mechanism 7, and the deflection driving mechanism 8 in the rail grinding unit 100 described in embodiment 1 are all provided with sensors, so that the position of the rail 23 can be precisely ground, and the grinding wheel 9 with a single cambered surface structure can grind the rail top of the rail 23 through the traverse and deflection actions, and can also grind areas such as rail heads. In addition, the traversing mechanism and the pressing mechanism may be operated by a combination of a guide post and a guide sleeve, for example: similar technical effects are realized between the guide post and the guide sleeve through different technical schemes such as a bearing, a copper bush or a linear bearing or a needle bearing.

The steel rail grinding unit 100 described in embodiment 1 adopts the cambered surface of the grinding wheel 9 to grind the cambered surface of the steel rail 23, so that the problems of corrugation and facet caused by grinding the plane of the traditional grinding wheel can be effectively reduced, and meanwhile, the steel rail grinding unit 100 is provided with a transverse moving mechanism, a pressing mechanism and a deflecting mechanism, so that the requirements of grinding the main track of a railway can be met, and turnout grinding can be performed. The rail polishing unit 100 adopts a modular design, not only is the structural design simplified, but also the requirements of small-size layout and small-space installation can be met, the posture of the polishing motor 10 can be independently controlled, the polishing angle range is large, the arrangement is flexible, the polishing of the steel rail 23 cambered surface can be realized through the combination and collocation of the rail polishing unit 100, and various technical problems caused by the polishing of the traditional grinding wheel plane are avoided.

Example 2

As shown in fig. 15 to 19, an embodiment of a rail cambered surface grinding carriage 200 of the present application is disposed at the bottom of a rail grinding wagon 400, and specifically includes:

a carriage 300, and a rail grinding unit 100 mounted on the carriage 300.

Rail grinding wagon 400 may further include:

a lifting mechanism 28 having one end connected to the bottom of the rail grinding wagon 400 and the other end connected to the frame 300;

a traction mechanism 29 mounted at the bottom of the rail grinding wagon 400 and connected with the frame 300;

and a fireproof and dustproof device 500 installed on the frame 300 and disposed outside the frame 300, and the rail grinding unit 100 is installed on the frame 300 and disposed inside the fireproof and dustproof device 500.

The whole rail cambered surface grinding trolley 200 comprises a lifting mechanism 28, a traction mechanism 29, traveling wheels 30, a rail grinding unit 100, a frame 300, a fireproof and dustproof device 500 and the like. The lifting mechanism 28 and the traction mechanism 29 are connected to the bottom of the car body 600 of the rail grinding wagon 400 at one end and to the car frame 300 at the other end. The rail grinding unit 100 is mounted on the carriage 300. The rail grinding unit 100 and the vehicle frame 300 are externally provided with a fireproof and dustproof system 500, which comprises a top soft curtain 25, a vehicle door 26, a bottom soft curtain 27 and the like. The fireproof and dustproof system 500 is installed on the frame 300, and can play a role in sealing the environment and isolating scrap iron, sparks and dust.

The traction mechanism 29 is further of a vertically-mounted structure, so that the traction defect caused by a cable-stayed traction mechanism of a traditional grinding trolley can be overcome, the load shedding effect caused by the vertical traction component force of a cable-stayed traction rod is avoided, the overall size space of the grinding device can be shortened, and the size design and layout of the steel rail grinding wagon 400 are facilitated.

Two rail grinding units 100 are installed along the operation direction on the frame 300, wherein the working surface of the grinding wheel 9 of each rail grinding unit 100 positioned on the same side corresponds to one section of the arc surface of the rail 23, and the enveloping of the whole grinding surface of the single-side rail 23 is realized through the combination of the grinding wheels 9 of the single-side rail grinding units 100. Wherein, at least 5 rail grinding units 100 are arranged on one side of the vehicle frame 300, and the working surface of the grinding wheel 9 of the rail grinding unit 100 comprises a R300 in the middle, R80 on two sides and an arc surface of R13 near the rail head. As shown in fig. 20 and 21, the rail camber grinding unit 100 is distributed on the one-side carriage 300 in a central symmetry with respect to a geometric center point of the one-side carriage. The rail cambered surface grinding unit 100 is distributed on the left and right frames 300 and is axisymmetric with respect to the longitudinal central axis of the rail grinding trolley 200 or is centrosymmetric with respect to the geometric central point of the rail grinding trolley 200. Through the combination mode of the rail cambered surface grinding unit 100, the rail grinding wagon 400 can finish reciprocating grinding on the rail 23 without reversing, and the rail 23 with higher grinding quality can be formed.

In this embodiment, 5 rail grinding units 100, which are a first grinding unit 101, a second grinding unit 102, a third grinding unit 103, a fourth grinding unit 104 and a fifth grinding unit 105, are sequentially installed on one side of the carriage 300 along the longitudinal direction. The outer circumferential surface of the grinding wheel 9 of the first grinding unit 101 is processed with an arc surface of R13 for grinding the rail head outer side R13 arc surface of the steel rail 23. The outer circumferential surface of the grinding wheel 9 of the second grinding unit 102 is processed with an arc surface of R80 for grinding the rail head outer side R80 arc surface of the steel rail 23. The outer circumferential surface of the grinding wheel 9 of the third grinding unit 103 is processed with an R300 arc surface for grinding the R300 arc surface in the middle of the rail head of the steel rail 23. The outer circumferential surface of the grinding wheel 9 of the fourth grinding unit 104 is processed with an arc surface of R80 for grinding the arc surface of the rail head inner side R80 of the steel rail 23. The outer circumferential surface of the grinding wheel 9 of the fifth grinding unit 105 is processed with an arc surface of R13 for grinding the arc surface of the rail head inner side R13 of the steel rail 23.

As another modification of the present embodiment, 5 rail grinding units 100, which are a first grinding unit 101, a second grinding unit 102, a third grinding unit 103, a fourth grinding unit 104 and a fifth grinding unit 105, are sequentially installed on one side of the carriage 300 along the longitudinal direction. The outer circumferential surface of the grinding wheel 9 of the first grinding unit 101 is processed with an arc surface of R13 for grinding the rail head inner side R13 arc surface of the steel rail 23. The outer circumferential surface of the grinding wheel 9 of the second grinding unit 102 is processed with an arc surface of R80 for grinding the arc surface of the rail head inner side R80 of the steel rail 23. The outer circumferential surface of the grinding wheel 9 of the third grinding unit 103 is processed with an R300 arc surface for grinding the R300 arc surface in the middle of the rail head of the steel rail 23. The outer circumferential surface of the grinding wheel 9 of the fourth grinding unit 104 is processed with an arc surface of R80 for grinding the rail head outer side R80 arc surface of the steel rail 23. The outer circumferential surface of the grinding wheel 9 of the fifth grinding unit 105 is processed with an arc surface of R13 for grinding the rail head outer side R13 arc surface of the steel rail 23.

Since the embodiment of the present invention adopts the cambered surface grinding manner, when the rail is ground, sparks are sprayed toward the front or rear end of the rail 23 according to the direction of rotation of the grinding motor 10. Therefore, furthermore, dust suction devices can be arranged at the front end and the rear end of the steel rail grinding unit 100, and grinding dust and scrap iron can be quickly and efficiently absorbed.

The rail cambered surface dolly 200 of polishing that embodiment 2 described is for having the dolly of polishing of 10 bistriques, rail unit 100 of polishing adopts the structural arrangement of bilateral symmetry formula all around, specifically for adopting 5 to polish unit 100 for a set of combination formula rail, every one side of frame 300 all has 5 cambered surface bistriques, arrange through the combination formula that corresponds 5 cambered surface grindstones to unilateral rail, rail cambered surface dolly 200 of polishing carries out the one-time combination envelope formula and polishes and can accomplish the full coverage to 23 profile of rail, can effectively get rid of the facet problem that traditional emery wheel plane polished and brought.

Example 3

As shown in fig. 22, an embodiment of a rail grinding wagon 400 according to the present application specifically includes:

a vehicle body 600;

and a rail cambered surface grinding trolley 200 arranged at the lower part of the trolley body 600, as described in embodiment 2.

As shown in fig. 17 and 18, a door lock sensor 31 is mounted on the frame 300 of the rail cambered surface grinding trolley 200, and a sensor induction plate 32 is mounted on the door 26 of the fireproof and dustproof device 500. When the door 26 is opened, the sensor sensing plate 32 is away from the door lock sensor 31, and the rail grinding wagon 400 receives a door lock signal, and the rail grinding wagon 400 is prohibited from traveling. When the door 26 is closed, the sensor induction plate 32 is close to the door locking sensor 31, the rail grinding wagon 400 obtains a running permission signal, and the rail grinding wagon 400 permits operation running. The door lock sensor 31 may be a contact or non-contact sensor. Traditional rail grinding wagon is when carrying out the inside inspection of dolly of polishing and maintenance, if operating personnel starts operation rail grinding wagon and will bring very big potential safety hazard to under the car dimension guarantor detection personnel. The rail grinding wagon 400 described in this embodiment provides a coordinated control mode, which provides a detection signal when the door 26 is opened and closed, and the rail grinding wagon 400 cannot run the vehicle when the door 26 is opened.

The rail grinding wagon 400 described in this embodiment is suitable for prevention, correction, or pre-grinding of subways, high-speed rails, trams, regular railroads, turnouts, and urban tram rails, and can also grind fixed or moving turnouts in a fully automatic mode.

Example 4

An embodiment of a rail grinding method based on embodiments 1 to 3 specifically includes the following steps:

a plurality of rail grinding units 100 are longitudinally arranged on a frame 300 of the rail cambered surface grinding trolley 200, the rail grinding units 100 are adjusted to a set transverse position and a set inclination angle, and the outer circumference of a grinding wheel 9 of each rail grinding unit is used for grinding the rail head of the rail 23. The working surface of the grinding wheel 9 of each rail grinding unit 100 corresponds to a section of arc surface of the cross section of the rail head of the rail 23, and the enveloping of the whole grinding section of the rail head of the single-side rail 23 is realized through the combination of the grinding wheels 9.

As shown in fig. 13, in the present embodiment, the top arc surface of the rail 23 is divided into 5 arc surfaces, which are R300 at the center, R80 at both sides, and R13 near the rail head. Therefore to this kind of cambered surface structure of rail 23, this embodiment sets up 5 rail grinding units 100 to rail 23 with one side at least, and the emery wheel 9 of rail grinding unit 100 all adopts the cambered surface emery wheel, and each cambered surface emery wheel all corresponds to one section cambered surface of rail 23, can realize the envelope to whole rail 23 top surface through the mode of combination rail grinding unit 100. At least 5 rail grinding units 100 are arranged on one side of the vehicle frame 300, and the working surfaces of grinding wheels 9 of the rail grinding units 100 respectively correspond to arc surfaces of the middle part R300, the two sides R80 of the middle part and the outermost side R13 of the rail head of the grinding rail 23. As shown in fig. 14, a is a grinding wheel 9 with an R300 arc surface machined on the outer circumferential surface, B is a grinding wheel 9 with an R80 arc surface machined on the outer circumferential surface, C is a grinding wheel 9 with an R13 arc surface machined on the outer circumferential surface, and D is a grinding wheel 9 with an unprocessed outer circumferential surface.

Aiming at the steel rail 23 on the same side, the enveloping of the arc surface of the whole steel rail 23 can be realized by the combined grinding of the steel rail grinding units 100 adopting 5 arc surface grinding wheels in the embodiment, but the enveloping grinding of the steel rail 23 by a single or a plurality of grinding wheels (grinding heads) 9 can also be realized by the combination and grinding strategy design of 1 to 5 steel rail grinding units 100 according to the condition of the actual steel rail grinding wagon 400.

In the present embodiment, a first sanding unit 101, a second sanding unit 102, a third sanding unit 103, a fourth sanding unit 104, and a fifth sanding unit 105 are installed in sequence in the longitudinal direction at one side of the carriage 300. The circular arc surface of R13 is machined on the outer circumferential surface of the grinding wheel 9 of the first grinding unit 101 for grinding the rail head outer side R13 circular arc surface of the steel rail 23. An arc surface of R80 is machined on the outer circumferential surface of the grinding wheel 9 of the second grinding unit 102 for grinding the rail head outer side R80 arc surface of the steel rail 23. And processing an arc surface of R300 on the outer circumferential surface of the grinding wheel 9 of the third grinding unit 103, and grinding the arc surface of R300 in the middle of the rail head of the steel rail 23. The arc surface of R80 is machined on the outer circumferential surface of the grinding wheel 9 of the fourth grinding unit 104, and is used for grinding the arc surface of the rail head inner side R80 of the steel rail 23. An arc surface of R13 is machined on the outer circumferential surface of the grinding wheel 9 of the fifth grinding unit 105 for grinding the rail head inner side R13 arc surface of the steel rail 23.

As another modification of the present embodiment, a first dressing unit 101, a second dressing unit 102, a third dressing unit 103, a fourth dressing unit 104, and a fifth dressing unit 105 are installed in this order in the longitudinal direction on one side of the carriage 300. The circular arc surface of R13 is machined on the outer circumferential surface of the grinding wheel 9 of the first grinding unit 101 for grinding the rail head inner side R13 circular arc surface of the steel rail 23. The circular arc surface of R80 is machined on the outer circumferential surface of the grinding wheel 9 of the second grinding unit 102 for grinding the rail head inner side R80 circular arc surface of the steel rail 23. And processing an arc surface of R300 on the outer circumferential surface of the grinding wheel 9 of the third grinding unit 103, and grinding the arc surface of R300 in the middle of the rail head of the steel rail 23. The arc surface of R80 is machined on the outer circumferential surface of the grinding wheel 9 of the fourth grinding unit 104 for grinding the rail head outer side R80 arc surface of the steel rail 23. An arc surface of R13 is machined on the outer circumferential surface of the grinding wheel 9 of the fifth grinding unit 105 for grinding the rail head outer side R13 arc surface of the steel rail 23.

During the rail 23 grinding process, if the cutting and grinding capability of the grinding wheel 9 is insufficient, the abrasive particles have poor self-sharpening performance, and the temperature between the grinding wheel 9 and the rail 23 is increased sharply. If the grinding wheel 9 has high cutting and grinding capacity and the abrasive particles are self-sharpening, a great amount of heat can be taken away by the continuously generated abrasive dust, so that the phenomenon that the steel rail 23 is ground and blued is prevented by effectively controlling the temperature of the steel rail 23. The surface heat treatment process of the steel rail is different aiming at different grades of steel rail materials, so that the hardness value of the surface of the steel rail and the depth of a hardened layer are different, and according to different steel rails, the steel rail grinding unit 100 in the embodiment selects different grinding wheels 9 to perform matching operation so as to realize good grinding effect. In this embodiment, the grinding wheel 9 may be prepared in two ways, the first is to process the circular arc surfaces of R300, R80 and R13 on the outer circumferential surface of the grinding wheel 9 in advance, and then perform matched grinding with the circular arc surface of the rail head of the steel rail 23 through the circular arc surfaces. The other is that the outer circumferential surface of the grinding wheel 9 is not processed in advance, and the grinding wheel 9 automatically generates a corresponding arc surface according to the arc surface of the steel rail grinding position in the grinding operation process by utilizing the grinding self-sharpening property of the grinding wheel 9.

The grinding motor 10 is installed vertically, and an output shaft of the grinding motor 10 is connected with the grinding wheel 9 through a transmission box 14, so that power reversing transmission between the grinding motor 10 and the grinding wheel 9 is achieved. A first transmission gear 16 and a second transmission gear 20 are arranged in the transmission box 14, the first transmission gear 16 is connected with a motor shaft 17 of the grinding motor 10, and the second transmission gear 20 is connected with a grinding wheel rotating shaft 18 of the grinding wheel 9. The output power of the grinding motor 10 is transmitted into the transmission box 14 through the motor shaft 17, and is transmitted to the grinding wheel rotating shaft 18 through the first transmission gear 16 and the second transmission gear 20 which are meshed with each other in a reversing way, so that the grinding wheel 9 is driven to realize tangential grinding on the steel rail 23.

The thickness of the grinding wheel 9 is set to be 20 mm-60 mm, continuous enveloping grinding is carried out on the rail head surface of the steel rail 23 through the outer circumference surface of the grinding wheel 9, the small section of the rail head surface of the steel rail 23 is eliminated, and the rail head surface roughness of the ground steel rail 23 is ensured to be lower than 5 microns.

A door lock sensor 31 is arranged on the frame 300 of the rail cambered surface grinding trolley 200, and a sensor induction plate 32 is arranged on the door 26 of the fireproof and dustproof device 500. When the door 26 is opened, the sensor sensing plate 32 is separated from the door lock sensor 31, the rail grinding wagon 400 receives a door lock signal, and the rail grinding wagon 400 prohibits the work travel. When the door 26 is closed, the sensor induction plate 32 is close to the door locking sensor 31, the rail grinding wagon 400 obtains a running permission signal, and the rail grinding wagon 400 permits operation running.

In the rail grinding method described in this embodiment, the outer circumferential surface of the grinding wheel 9 is used for performing enveloping grinding on the surface of the rail 23, and this grinding method can perform sufficient continuous grinding on the contour surface of the rail 23, so that no facet occurs and the surface roughness of the rail 23 after grinding can reach less than 5 micrometers. In addition, since rail grinding is performed using the outer circumferential surface of the grinding wheel 9, the thickness of the grinding wheel 9 is 20mm to 60mm, which is greatly reduced in size compared to the diameter of the grinding wheel 9. Consequently, this kind of mode of polishing has the advantage of coming with the life when carrying out regional polishing such as switch, guardrail, can polish under the prerequisite of the barrier of not touching the rail both sides, obtains great promotion to regional polishing such as switch.

It should be noted that, in the embodiment of the present invention, the traverse driving mechanism 6, the downward pressing driving mechanism 7, and the deflecting driving mechanism 8 may be embodied in the form of an oil cylinder, an air cylinder, or an electric cylinder. The guide sleeve and guide column combined structure of the transverse guide column 1 and the transverse guide sleeve 2, and the lower guide column 4 and the lower guide sleeve 5 can also adopt a guide rail and slider combination, a gear and rack combination and other alternative structures to realize the function of a sliding pair.

By implementing the technical scheme of the rail cambered surface grinding trolley and the rail grinding wagon described in the specific embodiment of the invention, the following technical effects can be achieved:

(1) according to the rail cambered surface grinding trolley and the rail grinding wagon described in the specific embodiment of the invention, the grinding wheel cambered surface is adopted to grind the rail cambered surface, the structure is simple, the grinding deflection angle is large, the profile surface of the rail can be fully ground, the wave grinding problem caused by the traditional grinding wheel plane grinding is effectively reduced, and meanwhile, the rail cambered surface grinding trolley and the rail grinding wagon have the design of a pressing, deflecting and traversing mechanism, can grind without touching obstacles on two sides of the rail, can meet the grinding requirement of a railway main track, and can grind a turnout;

(2) according to the rail cambered surface grinding trolley and the rail grinding wagon described in the specific embodiment of the invention, a modularized grinding unit design is adopted, the grinding unit frame adopts a crank arm structure, the grinding motor adopts a vertical installation mode, the grinding direction is converted through the transmission case, the posture of the grinding motor can be independently controlled, the arrangement is flexible, the grinding angle range is large, the simplified structural design is adopted, and the requirements of small-size layout and small-space installation can be met;

(3) according to the rail cambered surface grinding trolley and the rail grinding wagon described in the specific embodiment of the invention, the combined rail grinding unit is adopted, and the enveloping grinding of the surface of the rail is realized through 1 to 5 cambered surface grinding units, so that the rail surface of the rail can be completely covered, the problem of small planes caused by the plane grinding of a traditional grinding wheel is effectively solved, and the surface roughness of the ground rail can be below 5 micrometers; the grinding wheel has high cutting and grinding capacity and good abrasive particle self-sharpening performance, and the continuously generated abrasive dust can take away a large amount of heat, so that the temperature of the steel rail is effectively controlled to prevent the steel rail from generating a grinding bluing phenomenon;

(4) according to the rail cambered surface grinding trolley and the rail grinding wagon described in the specific embodiment of the invention, the grinding trolley adopts an operation linkage control mode, a detection signal can be given when a door is opened and closed, and when the door is opened, the grinding wagon cannot run a motor car, so that the technical problem that when the traditional rail grinding wagon is used for carrying out internal inspection and maintenance on the grinding trolley, the grinding wagon operator starts the running wagon to bring serious potential safety hazards to maintenance and inspection personnel under the wagon is solved.

The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or equivalent modifications, without departing from the spirit and scope of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the protection scope of the technical solution of the present invention.

Claims (13)

1. The utility model provides a rail cambered surface dolly of polishing sets up in the bottom of rail grinding wagon (400), its characterized in that includes:

a carriage (300), and a rail grinding unit (100) mounted on the carriage (300);

the rail grinding unit (100) includes:

a traversing mechanism;

the output shaft of the grinding motor (10) is connected with a grinding wheel (9), and the steel rail (23) is ground through the outer circumferential surface of the grinding wheel (9);

the polishing unit frame (3) is used for mounting the polishing motor (10) and is movably connected to the transverse moving mechanism, and the transverse moving mechanism can drive the polishing motor (10) to realize transverse moving operation;

the deflection mechanism is connected between the polishing unit frame (3) and the polishing motor (10), and deflection operation can be realized through the deflection mechanism and the polishing motor (10);

and the pressing mechanism is connected between the deflection mechanism and the grinding motor (10), and the grinding motor (10) can be driven by the pressing mechanism to realize lifting and pressing operations.

2. The rail arc grinding cart of claim 1, wherein: the transverse mechanism comprises a transverse guide pillar (1), a transverse guide sleeve (2) and a transverse driving mechanism (6), and the polishing unit frame (3) is movably arranged on the transverse guide pillar (1) through the transverse guide sleeve (2); one end of the transverse moving driving mechanism (6) is arranged on the polishing unit frame (3), and the other end of the transverse moving driving mechanism is arranged on a frame (300) of the rail cambered surface polishing trolley (200); the transverse moving driving mechanism (6) drives the polishing unit frame (3) to move on the transverse moving guide post (1), and then the polishing motor (10) and the polishing grinding wheel (9) are driven to move in the transverse direction of the steel rail (23).

3. The rail arc grinding wagon of claim 1 or 2, wherein: the downward pressing mechanism comprises a downward pressing guide sleeve (4), a downward pressing guide post (5) and a downward pressing driving mechanism (7), the lower part of the downward pressing guide post (5) is provided with a motor mounting seat (11), and the upper part of the downward pressing guide post (5) is fixed with a polishing motor (10) through a connecting disc (12); one end of the pressing-down driving mechanism (7) is connected with the pressing-down guide sleeve (4), the other end of the pressing-down driving mechanism is connected with the connecting disc (12), and the pressing-down driving mechanism (7) drives the grinding motor (10) to move up and down in the vertical direction so as to drive the grinding wheel (9) connected with the grinding motor (10) to move up and down.

4. The rail arc grinding cart of claim 3, wherein: the deflection mechanism comprises a deflection driving mechanism (8) and a deflection frame (13), one end of the deflection driving mechanism (8) is fixed on the polishing unit frame (3), and the other end of the deflection driving mechanism is connected with the deflection frame (13); the deflection frame (13) and the lower pressure guide sleeve (4) are connected into a whole and extend towards the left side and the right side, one side of the deflection frame (13) is hinged with the polishing unit frame (3), and the other side of the deflection frame is hinged to the polishing unit frame (3), extends outwards and is hinged with the movable end of the deflection driving mechanism (8); the deflection driving mechanism (8) drives the grinding motor (10) and the grinding wheel (9) to perform deflection motion.

5. The rail cambered surface grinding carriage of claim 1, 2 or 4, wherein: two rows of steel rail grinding units (100) are installed on the frame (300) along the operation direction, wherein the working surface of a grinding wheel (9) of each steel rail grinding unit (100) located on the same side corresponds to one section of arc surface of a steel rail (23), and the enveloping of the whole grinding surface of the single-side steel rail (23) is realized through the combination of the grinding wheels (9) of a plurality of steel rail grinding units (100) on the single side.

6. The rail arc grinding cart of claim 5, wherein: at least 5 rail grinding units (100) are installed on one side of the vehicle frame (300), and the working surface of a grinding wheel (9) of each rail grinding unit (100) comprises an R300 in the middle, R80 on two sides and an arc surface of R13 near a rail head.

7. The rail arc grinding cart of claim 6, wherein: 5 steel rail grinding units (100) are sequentially arranged on one side of the frame (300) along the longitudinal direction and respectively comprise a first grinding unit (101), a second grinding unit (102), a third grinding unit (103), a fourth grinding unit (104) and a fifth grinding unit (105); the outer circumferential surface of a grinding wheel (9) of the first grinding unit (101) is processed with an arc surface of R13 and is used for grinding an arc surface of R13 on the outer side of a rail head of the steel rail (23); the outer circumferential surface of a grinding wheel (9) of the second grinding unit (102) is processed with an arc surface of R80 and is used for grinding an arc surface of R80 on the outer side of a rail head of the steel rail (23); the outer circumferential surface of a grinding wheel (9) of the third grinding unit (103) is processed with an R300 arc surface for grinding the R300 arc surface in the middle of the rail head of the steel rail (23); the outer circumferential surface of a grinding wheel (9) of the fourth grinding unit (104) is processed with an arc surface of R80 and is used for grinding an arc surface of R80 on the inner side of a rail head of the steel rail (23); the outer circumferential surface of a grinding wheel (9) of the fifth grinding unit (105) is processed with an arc surface of R13 and is used for grinding an arc surface of R13 on the inner side of a rail head of the steel rail (23).

8. The rail arc grinding cart of claim 6, wherein: 5 steel rail grinding units (100) are sequentially arranged on one side of the frame (300) along the longitudinal direction and respectively comprise a first grinding unit (101), a second grinding unit (102), a third grinding unit (103), a fourth grinding unit (104) and a fifth grinding unit (105); the outer circumferential surface of a grinding wheel (9) of the first grinding unit (101) is processed with an arc surface of R13 and is used for grinding an arc surface of R13 on the inner side of a rail head of the steel rail (23); the outer circumferential surface of a grinding wheel (9) of the second grinding unit (102) is processed with an arc surface of R80 and is used for grinding an arc surface of R80 on the inner side of a rail head of the steel rail (23); the outer circumferential surface of a grinding wheel (9) of the third grinding unit (103) is processed with an R300 arc surface for grinding the R300 arc surface in the middle of the rail head of the steel rail (23); the outer circumferential surface of a grinding wheel (9) of the fourth grinding unit (104) is processed with an arc surface of R80 and is used for grinding an arc surface of R80 on the outer side of a rail head of the steel rail (23); the outer circumferential surface of a grinding wheel (9) of the fifth grinding unit (105) is processed with an arc surface of R13 and is used for grinding the arc surface of the R13 on the outer side of the rail head of the steel rail (23).

9. A rail cambered surface grinding carriage as claimed in claim 1, 2, 4, 6, 7 or 8, wherein: an output shaft of the grinding motor (10) is connected with a grinding wheel (9) through a transmission case (14); one end of the transmission case (14) is connected with a motor shaft (17), the other end of the transmission case is connected with a grinding wheel mounting disc (19), and the grinding wheel (9) is fixed on the grinding wheel mounting disc (19); the transmission box (14) comprises a protective cover (15), a first transmission gear (16) and a second transmission gear (20) which are arranged on the protective cover (15), the first transmission gear (16) is connected with a motor shaft (17), and the second transmission gear (20) is connected with a grinding wheel rotating shaft (18); the grinding motor (10) outputs power which is transmitted into the transmission box (14) through the motor shaft (17) and transmitted to the grinding wheel rotating shaft (18) through the first transmission gear (16) and the second transmission gear (20) which are meshed with each other in a reversing way, so that the grinding wheel (9) is driven to rotate tangentially.

10. The rail arc grinding cart of claim 9, wherein: the traction mechanism (29) adopts a vertical mounting structure.

11. A rail cambered surface grinding carriage as claimed in claim 1, 2, 4, 6, 7, 8 or 10 wherein: the thickness of the grinding wheel (9) is 20 mm-60 mm.

12. A rail grinding wagon, comprising:

a vehicle body (600);

and a rail camber grinding wagon (200) as claimed in any one of claims 1 to 11 disposed on a lower portion of the wagon body (600).

13. A rail grinding wagon according to claim 12, wherein: a vehicle door locking sensor (31) is installed on a frame (300) of the rail cambered surface grinding trolley (200), and a sensor induction plate (32) is installed on a vehicle door (26) of the fireproof and dustproof device (500); when the vehicle door (26) is opened, the sensor induction plate (32) is far away from the vehicle door locking sensor (31), the rail grinding wagon (400) obtains a vehicle door locking signal, and the rail grinding wagon (400) is prohibited from running; when the vehicle door (26) is closed, the sensor induction plate (32) is close to the vehicle door locking sensor (31), the rail grinding wagon (400) obtains a running permission signal, and the rail grinding wagon (400) allows operation running.

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