CN212375650U

CN212375650U - Device for polishing turnout steel rail by utilizing curved surface polisher

Info

Publication number: CN212375650U
Application number: CN202020926552.6U
Authority: CN
Inventors: 张铮; 梁德敏; 张博; 王先尧
Original assignee: Yiluxing Beijing Technology Co ltd
Current assignee: Yiluxing Beijing Technology Co ltd
Priority date: 2020-05-07
Filing date: 2020-05-27
Publication date: 2021-01-19
Anticipated expiration: 2030-05-27
Also published as: CN111535096A

Abstract

The utility model provides an utilize curved surface polisher to implement device that switch rail was polished relates to track traffic and rail technical field that polishes, has solved large-scale polisher and can not effectively polish to the switch, and small-size polisher or manual work are polished inefficiently, polish the unable technical problem who satisfies the requirement of quality. The device comprises a curved surface grinding machine, wherein the curved surface grinding machine comprises four groups of grinding units; the four groups of polishing units have different polishing positions on the steel rail, and can meet the requirements of polishing of different rail types and tread enveloping; the grinding unit is in contact with the steel rail through the circumferential surface of the grinding wheel for grinding, and can polish the turnout steel rail after grinding; the polishing head of the polishing unit can be adjusted. The utility model discloses a four units of polishing have realized polishing to whole switch comprehensively, have improved the quality of polishing, and the head of polishing can adjust and improve the operating efficiency, polishes the operation after can also polishing.

Description

Device for polishing turnout steel rail by utilizing curved surface polisher

Technical Field

The utility model belongs to the technical field of rail transit and the rail technique of polishing and specifically relates to an utilize curved surface polisher to implement device that switch rail was polished.

Background

With the continuous progress of society, railway equipment is gradually perfected, railway transportation pace is accelerated, maintenance of the railway equipment plays an important role in railway transportation, and preventive and repairable grinding needs to be carried out on rails and turnouts of a track frequently. Due to various reasons such as manufacturing process, laying process, periodic train operation, accidental collision, climate and the like of the rail and the turnout, the phenomena of wave-shaped abrasion, edge fatting, block stripping, poor operation state and the like are often generated, particularly, a curved strand is small in curve radius, and no superelevation is set on the turnout, so that the curved switch rail is subjected to larger transverse force, more steel rail diseases are generated, and the rail and the turnout are required to be polished through rail polishing equipment in a preventive mode, a repairing mode or a profile modifying mode. There is a need for a device for grinding railroad switch rails using a curved grinding machine.

In the rail grinding work, a large grinding machine, a small grinding machine or manual grinding is generally used. Because of the design of turnout, the existing large-scale grinding equipment cannot effectively grind in the sections of a frog, a guard rail and a switch rail, and in the section of a bent strand, the bent strand grinding is rarely implemented because of the reasons that a guide wheel of the large-scale equipment passes through the frog, hidden troubles exist, and the like. And small-size polisher and manual work are polished inefficiently, and the district of polishing is discontinuous, and it is not good to polish the quality, can't reach the real purpose that the switch was polished.

The applicant has found that the prior art has at least the following technical problems:

the existing large grinding machine can not effectively grind the turnout, the small grinding machine or the manual grinding machine is low in efficiency, and the grinding quality can not meet the technical requirement of grinding the turnout.

Disclosure of Invention

An object of the utility model is to provide an utilize curved surface polisher to implement device that switch rail was polished to solve the current large-scale polisher that exists among the prior art and can not effectively polish to the switch, small-size polisher or artifical inefficiency of polishing, the technical problem that the quality of polishing can't satisfy the technical requirement that the switch was polished. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a device for polishing turnout steel rails by using a curved surface polisher, which comprises a curved surface polisher, wherein the curved surface polisher comprises four groups of polishing units; the four groups of polishing units have different polishing positions on the steel rail, and can meet the requirements of polishing of different rail types and tread enveloping; the grinding unit is in contact with the steel rail through the circumferential surface of the grinding wheel for grinding, and can polish the turnout steel rail after grinding; the longitudinal cutting angle between the polishing head of the polishing unit and the steel rail, the transverse deflection angle between the polishing head of the polishing unit and the steel rail and the relative transverse moving position between the polishing head of the polishing unit and the center of the steel rail can be adjusted.

Optionally, the four groups of polishing units are respectively a first polishing unit, a second polishing unit, a third polishing unit and a fourth polishing unit; the first polishing unit, the second polishing unit, the third polishing unit and the fourth polishing unit are sequentially connected with a network system through an electric circuit.

Optionally, the first grinding unit grinds the steel rail at a position of 5 ° to 30 ° and-5 ° to-30 °, the second grinding unit grinds the steel rail at a position of 3 ° to 60 °, the third grinding unit grinds the steel rail at a position of 5 ° to-60 °, and the fourth grinding unit grinds the steel rail at a position of 10 ° to 60 ° and-10 ° to-60 °.

Alternatively, the sanding head of the sanding unit can be fitted with grindstones of different thicknesses.

Optionally, the polishing head of the third polishing unit can also be provided with a paper thousand impeller.

Optionally, the third grinding unit can polish straight strands, curved strands, switch points and switch points of the turnout twice through the paper-made flap wheel, polish the working edges and the top surfaces of the steel rails for the first time, and polish the non-working edges and the top surfaces of the steel rails for the second time.

Alternatively, the polishing parameters of the polishing unit can be adjusted by a display panel of a self-equipped controller or a main controller.

Optionally, the grinding speed, the grinding power and the rail grinding position of the curved surface grinding machine can be manually adjusted in the grinding operation process.

Optionally, the polishing head of the polishing unit can rotate or tilt, and the longitudinal tangential angle, the transverse deflection angle and the relative transverse displacement of the polishing head and the steel rail are adjusted.

Optionally, the wheel pair diameter of the curved surface grinding machine is 500mm or 350 mm.

Any technical scheme can at least produce the following technical effects:

the utility model provides a switch rail grinding device utilizes the curved surface polisher to polish, has realized polishing to whole switch comprehensively through four units of polishing to form more satisfactory curved surface envelope after polishing, improved the quality of polishing. The polishing head of the polishing unit can be adjusted, the polishing machine is adaptable to polishing operation of rails and turnouts of different models, and can change the profile and the roughness of the rails, so that the polishing operation efficiency of the turnouts is improved. Meanwhile, polishing operation can be carried out on the polished turnout, and full coverage of turnout polishing is achieved.

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 present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic combination diagram of four polishing units according to the present invention;

FIG. 2 is a first schematic view of curved surface grinding;

FIG. 3 is a second schematic illustration of curved surface grinding;

FIG. 4 is a third schematic illustration of curved surface grinding;

FIG. 5 is a fourth schematic illustration of curved surface grinding;

FIG. 6 is a schematic view of the sharpening position of the first sharpening unit;

fig. 7 is a schematic view of a dressing position of the second dressing unit;

fig. 8 is a schematic view of a dressing position of the third dressing unit;

fig. 9 is a schematic view of a dressing position of the fourth dressing unit;

FIG. 10 is a schematic view of a switch grinding track;

FIG. 11 is a schematic view of a first pass buff polishing position;

fig. 12 is a schematic view of the second pass buff polishing position.

FIG. 1, a first polishing unit; 2. a second polishing unit; 3. a third polishing unit; 4. and a fourth grinding unit.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The utility model provides an utilize curved surface polisher to implement device that switch rail was polished, as shown in fig. 1-5, including the curved surface polisher, the curved surface polisher includes four group's units of polishing. The four groups of polishing units have different polishing positions on the steel rail, and can meet the requirements of polishing of different rail types and tread enveloping. And can envelop the entire rail tread together. The periphery that the unit of polishing passes through the emery wheel is polished with the rail contact, and the curved surface is polished promptly, through curved surface position and rail contact, can avoid the barrier in rail both sides to the at utmost, realizes polishing comprehensively to whole switch, forms more satisfactory curved surface envelope after polishing. The unit of polishing can also polish the switch rail after polishing, and the polishing can further improve the quality of polishing, and the unit of polishing integration polishing function of polishing reduces the cost, no longer need prepare extra polishing equipment, has realized the full coverage that the switch rail was polished. The longitudinal cutting angle between the polishing head of the polishing unit and the steel rail, the transverse deflection angle between the polishing head of the polishing unit and the steel rail and the relative transverse moving position between the polishing head of the polishing unit and the center of the steel rail can be adjusted, so that the transition of the polishing surface is smoother, and the profile forming capability is higher. The utility model provides a switch rail grinding device utilizes the curved surface polisher to polish, has realized polishing the whole switch comprehensively through four polishing units, realizes matching the shape of different rail types and forming tread envelope through the regulation and the combination of four polishing units to form more satisfactory curved surface envelope after polishing, improved the polishing quality; the polishing head of the polishing unit can be adjusted, the polishing machine is adaptable to polishing operation of rails and turnouts of different models, and can change the profile and the roughness of the rails, so that the polishing operation efficiency of the turnouts is improved. The polishing operation can be carried out on the polished turnout again, and the full coverage of turnout polishing is realized.

As an alternative embodiment, as shown in fig. 1, four sets of the dressing units are a first dressing unit 1, a second dressing unit 2, a third dressing unit 3, and a fourth dressing unit 4, respectively. The first polishing unit 1, the second polishing unit 2, the third polishing unit 3 and the fourth polishing unit 4 are sequentially connected with a network system through an electric circuit, the leftmost end in the drawing is a traction locomotive, the four groups of polishing units are mechanically connected through train couplers in the prior art, and electrical and network connection is established, so that the polishing units can communicate with one another, and polishing parameters of the polishing units are conveniently and uniformly set through a main controller.

As an alternative embodiment, as shown in fig. 6-9, the cross-section of the rail is divided into 120 degrees, the left side is the working side (the side of the rail in contact with the vehicle wheel-set) in positive degrees, and the right side is the non-working side (the other side of the rail in contact with the vehicle wheel-set) in negative degrees. The first grinding unit 1 grinds the steel rail at a position of 5-30 DEG and-5-30 DEG, the second grinding unit 2 grinds the steel rail at a position of 3-60 DEG, the third grinding unit 3 grinds the steel rail at a position of 5-60 DEG, and the fourth grinding unit 4 grinds the steel rail at a position of 10-60 DEG and-10-60 deg. The position of the grinding steel rail is the contact angle between the grinding head of each grinding unit and the steel rail, the envelope of the whole steel rail tread is realized by the combination of the four groups of grinding units, the angle can be adjusted individually or integrally according to the use requirement, the envelope of the whole steel rail tread is realized by other combination modes, and the embodiment is not illustrated here.

As an alternative embodiment, the grinding head of the grinding unit can be provided with grindstones with different thicknesses, so that the grinding of the steel rail is realized. The polishing head of the third polishing unit 3 can also be provided with a paper impeller, so that the polished steel rail is polished. The first grinding unit grinding head is selected from a grinding stone with the thickness of 35mm, the second grinding unit grinding head is selected from a grinding stone with the thickness of 35mm, the third grinding unit grinding head is selected from a grinding stone with the thickness of 60mm, and the fourth grinding unit grinding head is selected from a grinding stone with the thickness of 35 mm. Of course, other thicknesses of the grinding stone can be selected as required to achieve a specific grinding effect, and will not be described herein.

As an alternative embodiment, the third grinding unit 3 can polish the straight strands, the curved strands, the switch points and the switch points of the switch points in two passes, preferably a 50mm thick paper wheel, as shown in fig. 11, the first pass polishing the working edges (the side of the rail in contact with the vehicle wheel set) and the top surface of the rail, and as shown in fig. 12, the second pass polishing the non-working edges (the other side of the rail in contact with the vehicle wheel set) and the top surface of the rail. Through the two-time polishing process, the polishing of the whole rail tread is realized, and the polishing quality is ensured.

As an alternative embodiment, the grinding parameters of the grinding unit can be adjusted by a display panel of its own equipped controller or main controller. The grinding speed, the grinding power and the steel rail grinding position of the curved surface grinding machine can be manually adjusted in the grinding operation process. Thereby the utility model discloses can set for the adjustment according to the switch of different models, improve the suitability.

As an alternative embodiment, the sanding head of the sanding unit can be rotated or tilted to adjust the longitudinal tangent angle, the lateral deflection angle, and the relative amount of lateral displacement of the sanding head from the rail. The position of the polishing head and the profile surface of the steel rail is adjusted through three dimensions, so that the transition of the polishing surface is smooth, the profile forming capacity is more efficient, the polishing quality is ensured, the rotation or the inclination of the polishing head can be realized through the prior art, and the repeated description is omitted here.

As an alternative embodiment, the cambering machine has a wheel pair diameter of 500mm or 350mm, which is smaller than the usual vehicle wheel pair diameter. The two small-radius wheel sets have strong curve passing capacity, and can polish small turnouts and curved strands, thereby ensuring the polishing quality of the turnouts.

The utility model discloses concrete construction mode of polishing includes to the forward of the straight thigh of switch polish, to the reverse of the straight thigh of switch polish, to the forward of the bent thigh of switch polish, to the reverse of the bent thigh of switch polish, quality testing and switch polishing after the operation of polishing handle six steps, also more detailed operation in every step, specifically as follows.

(1) Forward grinding of straight strand of turnout

As shown in fig. 10, the horizontal parallel straight lines in the figure are schematic of the straight points. Marking on the turnout according to the actual situation of the turnout on site, wherein the specific marking positions are as shown in the figure, namely the position 20mm wide of the top of the switch rail, the joint of the turnout center and the steel rail, the joint of the steel rail and the gap of the stock rail and the switch rail is 20 mm. The grinding parameters of each grinding unit are adjusted and set, and the forward grinding operation direction is from the fork point to the fork tail, namely from left to right in the drawing. The specific polishing process is as follows:

1.1 the starting point of the operation is 25 meters before the fork, the grinding speed is 1km/h, and the left and right first grinding unit 1, the second grinding unit 2, the third grinding unit 3 and the fourth grinding unit 4 are sequentially put down to start grinding.

1.2 the first unit 1 operation of polishing in right side is promoted to the dot position four, and the second unit 2 operation of polishing in right side is promoted to the dot position four, and the third unit 3 operation of polishing in right side is promoted to the dot position four, and the fourth unit 4 operation of polishing in right side is promoted to the dot position four.

1.3 the second right polishing unit 2 is operated to the position of the sixth point and then is placed for polishing, the first right polishing unit 1 is operated to the position of the sixth point and then is placed for polishing, the third right polishing unit 3 is operated to the position of the sixth point and then is placed for polishing, and the fourth right polishing unit 4 is operated to the position of the sixth point and then is placed for polishing.

1.4, the first right polishing unit 1 works to the point II position, the second right polishing unit 2 works to the point II position, the third right polishing unit 3 works to the point II position, and the fourth right polishing unit 4 works to the point II position.

1.5 the first unit 1 that polishes in right side moves to the third point position and transfers and polish, and the second unit 2 that polishes in right side moves to the third point position and transfers and polish, and the third unit 3 that polishes in right side moves to the third point position and transfers and polish, and the fourth unit 4 that polishes in right side moves to the third point position and transfers and polish.

1.6 the grinding operation is carried out to the position 25 m behind the fork (the left side grinding unit is always in the grinding operation in the grinding process), the left and right side first grinding unit 1, the second grinding unit 2, the third grinding unit 3 and the fourth grinding unit 4 are sequentially lifted, and the machine is decelerated and stopped.

(2) Reverse polishing of turnout straight strand

As shown in fig. 10, the horizontal parallel straight lines in the figure are schematic of the straight points. Marking on the turnout according to the actual situation of the turnout on site, wherein the specific marking positions are as shown in the figure, namely the position 20mm wide of the top of the switch rail, the joint of the turnout center and the steel rail, the joint of the steel rail and the gap of the stock rail and the switch rail is 20 mm. The grinding parameters of each grinding unit are adjusted and set, and the reverse grinding operation direction is from tail to tip, namely from right to left in the drawing. The specific polishing process is as follows:

2.1 the starting point of the operation is 25 meters behind the tail of the fork, the polishing speed is 1km/h, and the left and right fourth polishing units 4, the third polishing unit 3, the second polishing unit 2 and the first polishing unit 1 are sequentially lowered to start polishing.

2.2 the fourth right-side polishing unit 4 works to the point position lifting, the third right-side polishing unit 3 works to the point position lifting, the second right-side polishing unit 2 works to the point position lifting, and the first right-side polishing unit 1 works to the point position lifting.

2.3 the fourth polishing unit 4 on the right side moves to the position of the second point and transfers polishing, the third polishing unit 3 on the right side moves to the position of the second point and transfers polishing, the second polishing unit 2 on the right side moves to the position of the second point and transfers polishing, and the first polishing unit 1 on the right side moves to the position of the second point and transfers polishing.

2.4 the fourth grinding unit 4 on the right operates to lift the position of the sixth point, the third grinding unit 3 on the right operates to lift the position of the sixth point, the second grinding unit 2 on the right operates to lift the position of the first point, and the first grinding unit 1 on the right operates to lift the position of the sixth point.

2.5 the fourth unit 4 of polishing in right side moves to the dot position and transfers and polish, and the third unit 3 of polishing in right side moves to the dot position and transfers and polish, and the second unit 2 of polishing in right side moves to the dot position and transfers and polish, and the first unit 1 of polishing in right side moves to the dot position and transfers and beats.

2.6 the grinding operation is carried out to the position 25 meters in front of the switch point (the left side grinding unit is always in the grinding operation in the grinding process), the left and right side fourth grinding unit 4, the third grinding unit 3, the second grinding unit 2 and the first grinding unit 1 are sequentially lifted, and the vehicle is decelerated and stopped.

(3) Forward polishing of turnout curved strand

As shown in fig. 10, the parallel curve bending to the lower right corner in the figure is an illustration of the curved strand of the switch. Marking the turnout according to the actual situation of the turnout on site, wherein the specific marking positions are shown in the figure, namely, the position with the width of 20mm at the top of the switch rail, the joint of the turnout center and the steel rail, the joint of the steel rail and the gap of 20mm between the stock rail and the switch rail. The grinding parameters of each grinding unit are adjusted and set, and the forward grinding operation direction is from the fork point to the fork tail, namely from left to right in the drawing. The specific polishing process is as follows:

3.1 the starting point of the operation is 25 meters before the fork, the grinding speed is 1km/h, and the left and right first grinding unit 1, the second grinding unit 2, the third grinding unit 3 and the fourth grinding unit 4 are sequentially put down to start grinding.

3.2 the left first polishing unit 1 is operated to the fifth point position, the left second polishing unit 2 is operated to the fifth point position, the left third polishing unit 3 is operated to the fifth point position, and the left fourth polishing unit 4 is operated to the fifth point position.

3.3 the second left-side polishing unit 2 moves to the position of the sixth point and is placed for polishing, the first left-side polishing unit 1 moves to the position of the sixth point and is placed for polishing, the third left-side polishing unit 3 moves to the position of the sixth point and is placed for polishing, and the fourth left-side polishing unit 4 moves to the position of the sixth point and is placed for polishing.

3.4 the first left polishing unit 1 works to the point position II to be lifted, the second left polishing unit 2 works to the point position II to be lifted, the third left polishing unit 3 works to the point position II to be lifted, and the fourth left polishing unit 4 works to the point position II to be lifted.

3.5 the first unit 1 of polishing in left side moves and transfers and polish to the third point position, and the second unit 2 of polishing in left side moves and transfers and polish to the third point position, and the third unit 3 of polishing in left side moves and transfers and polish to the third point position, and the fourth unit 4 of polishing in left side moves and transfers and polish to the third point position.

3.6 the grinding operation is carried out to the position 25 meters behind the fork (the right side grinding unit is always in the grinding operation in the grinding process), the left and right side first grinding unit 1, the second grinding unit 2, the third grinding unit 3 and the fourth grinding unit 4 are sequentially lifted, and the machine is decelerated and stopped.

(4) Reverse polishing of turnout curved strand

As shown in fig. 10, the parallel curve bending to the lower right corner in the figure is a schematic diagram of the curved strand of the turnout. Marking the turnout according to the actual situation of the turnout on site, wherein the specific marking positions are shown in the figure, namely, the position with the width of 20mm at the top of the switch rail, the joint of the turnout center and the steel rail, the joint of the steel rail and the gap of 20mm between the stock rail and the switch rail. The grinding parameters of each grinding unit are adjusted and set, and the reverse grinding operation direction is from tail to tip, namely from right to left in the drawing. The specific polishing process is as follows:

4.1 the operation starting point is 25 meters behind the fork tail, the polishing speed is 1km/h, and the left and right fourth polishing units 4, the third polishing unit 3, the second polishing unit 2 and the first polishing unit 1 are sequentially lowered to start polishing.

4.2 the fourth unit 4 of polishing in left side is worked to the lifting of position of third point, and the third unit 3 of polishing in left side is worked to the lifting of position of third point, and the second unit 2 of polishing in left side is worked to the lifting of position of third point, and the first unit 1 of polishing in left side is worked to the lifting of position of third point.

4.3 the fourth unit 4 of polishing of left side moves to the second point position and transfers and polish, and the third unit 3 of polishing of left side moves to the second point position and transfers and polish, and the second unit 2 of polishing of left side moves to the second point position and transfers and polish, and the first unit 1 of polishing of left side moves to the second point position and transfers and polish.

4.4 the fourth left-side grinding unit 4 works until the sixth point position is lifted, the third left-side grinding unit 3 works until the sixth point position is lifted, the second left-side grinding unit 2 works until the sixth point position is lifted, and the first left-side grinding unit 1 works until the sixth point position is lifted.

4.5 left side fourth unit 4 of polishing moves and transfers and polishes to fifth point position, and left side third unit 3 of polishing moves and transfers and polishes to fifth point position, and left side second unit 2 of polishing moves and transfers and polishes to fifth point position, and left side first unit 1 of polishing moves and transfers and polishes to fifth point position.

4.6 the grinding operation is carried out to the position 25 meters in front of the switch point (the right side grinding unit is always in the grinding operation in the grinding process), the left and right side fourth grinding unit 4, the third grinding unit 3, the second grinding unit 2 and the first grinding unit 1 are sequentially lifted, and the vehicle is decelerated and stopped.

(5) Quality detection after polishing operation

And measuring technical requirements such as profile and roughness of the polished turnout, adjusting the setting parameters of each polishing unit in time according to the measurement result, and repeating polishing operation until the requirements of the turnout on the related technology after polishing are met.

(6) Polishing treatment of turnout

The grindstone of the third grinding unit 3 on the left and right sides is replaced by a paper thousand impeller, grinding parameters and operation speed are set, only the third grinding unit 3 is started, and comprehensive grinding and polishing treatment is carried out on the straight strand of the turnout, the bent strand, the turnout point, the turnout and the like. The rail working edge and top surface are buffed and polished for the first pass as shown in fig. 11 and the non-working edge and top surface are buffed and polished for the second pass as shown in fig. 12.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A device for polishing turnout steel rails by using a curved surface polisher is characterized by comprising the curved surface polisher, wherein the curved surface polisher comprises four groups of polishing units; the four groups of polishing units have different polishing positions on the steel rail, and can meet the requirements of polishing of different rail types and tread enveloping; the grinding unit is in contact with the steel rail through the circumferential surface of the grinding wheel for grinding, and can polish the turnout steel rail after grinding; the longitudinal cutting angle between the polishing head of the polishing unit and the steel rail, the transverse deflection angle between the polishing head of the polishing unit and the steel rail and the relative transverse moving position between the polishing head of the polishing unit and the center of the steel rail can be adjusted.

2. The device for grinding the turnout steel rail by using the curved surface grinding machine as claimed in claim 1, wherein the four groups of grinding units are a first grinding unit, a second grinding unit, a third grinding unit and a fourth grinding unit respectively; the first polishing unit, the second polishing unit, the third polishing unit and the fourth polishing unit are sequentially connected with a network system through an electric circuit.

3. The apparatus for grinding a switch rail using a curved surface grinding machine according to claim 2, wherein the first grinding unit grinds the rail at positions of 5 ° to 30 ° and-5 ° to-30 °, the second grinding unit grinds the rail at positions of 3 ° to 60 °, the third grinding unit grinds the rail at positions of 5 ° to-60 °, and the fourth grinding unit grinds the rail at positions of 10 ° to 60 ° and-10 ° to-60 °.

4. The device for grinding turnout rail by using a grinder for curved surface according to claim 3, wherein the grinding head of the grinding unit can be installed with grinding stones with different thicknesses.

5. The device for grinding turnout rail by using a curved grinding machine according to claim 3, wherein the grinding head of the third grinding unit is also capable of being provided with a paper impeller.

6. The device for grinding railroad switch rails by means of a grinder for curved surfaces as claimed in claim 3, wherein said third grinding unit is capable of polishing the straight strands, curved strands, switch points and frog of the railroad switch by means of paper rollers in two passes, the first pass polishing the working edges and top surface of the rail and the second pass polishing the non-working edges and top surface of the rail.

7. The device for grinding a turnout rail by using a curved surface grinding machine according to claim 1, wherein the grinding parameters of the grinding unit can be adjusted by a display panel of a self-equipped controller or a main controller.

8. The apparatus for grinding a turnout rail using a curved surface grinder as claimed in claim 1, wherein the grinding speed, grinding power and rail grinding position of the curved surface grinder can be adjusted manually during grinding operation.

9. The apparatus for grinding a turnout rail using a grinder for a curved surface according to claim 1, wherein the grinding head of the grinding unit can be rotated or tilted to adjust the longitudinal tangential angle, the transverse deflection angle and the relative displacement between the grinding head and the rail.

10. The device for grinding the turnout rail by using the curved surface grinding machine as claimed in claim 1, wherein the diameter of the wheel pair of the curved surface grinding machine is 500mm or 350 mm.