CN111535096A - Device and method for polishing turnout steel rail by utilizing curved surface polisher - Google Patents
Device and method for polishing turnout steel rail by utilizing curved surface polisher Download PDFInfo
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- CN111535096A CN111535096A CN202010459550.5A CN202010459550A CN111535096A CN 111535096 A CN111535096 A CN 111535096A CN 202010459550 A CN202010459550 A CN 202010459550A CN 111535096 A CN111535096 A CN 111535096A
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- 238000005498 polishing Methods 0.000 title claims abstract description 274
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 67
- 239000010959 steel Substances 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000004575 stone Substances 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000004439 roughness measurement Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 description 7
- 238000007517 polishing process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
- E01B31/02—Working rail or other metal track components on the spot
- E01B31/12—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails
- E01B31/17—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails by grinding
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
- E01B31/02—Working rail or other metal track components on the spot
- E01B31/12—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails
Abstract
The invention provides a device and a method for polishing a turnout steel rail by using a curved surface polisher, relates to the technical field of rail transit and steel rail polishing, and solves the technical problems that a large polisher cannot effectively polish turnouts, a small polisher or manual polisher has low efficiency, and the polishing quality cannot meet the requirements. 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. According to the turnout polishing device, the four polishing units are used for comprehensively polishing the whole turnout, the polishing quality is improved, the polishing head can be adjusted to improve the operation efficiency, and polishing operation can be performed after polishing.
Description
Technical Field
The invention relates to the technical field of rail transit and steel rail grinding, in particular to a device and a method for grinding a turnout steel rail by using a curved surface grinding machine.
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
The invention aims to provide a device and a method for polishing a turnout steel rail by using a curved surface polisher, and aims to solve the technical problems that the turnout cannot be effectively polished by the existing large polisher, the efficiency of a small polisher or manual polishing is low, and the polishing quality cannot meet the technical requirements of turnout polishing in the prior art. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a device for polishing a turnout steel rail by using a curved surface polisher, which comprises the curved surface polisher, a polishing unit and a polishing unit, 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 a 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; 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.
A grinding method adopts any one of the devices for grinding turnout steel rails by using the curved surface grinding machine to grind the turnout steel rails, and comprises the following steps:
the straight strand of the turnout is polished in the forward direction, the polishing device runs to a position 25 meters in front of the turnout, the polishing speed is set to be 1km/h, the first polishing unit, the second polishing unit, the third polishing unit and the fourth polishing unit on the left side and the right side are respectively lifted and lowered to polish the turnout, the polishing operation is carried out to a position 25 meters behind the turnout, the first polishing unit, the second polishing unit, the third polishing unit and the fourth polishing unit on the left side and the right side are sequentially lifted, and the turnout is decelerated and stopped;
the turnout straight strand is reversely ground, the grinding speed is set to be 1km/h from 25 meters behind the turnout, the fourth grinding unit, the third grinding unit, the second grinding unit and the first grinding unit on the left side and the right side are respectively lifted and lowered to grind the turnout, the grinding operation is carried out to 25 meters in front of the turnout point, the fourth grinding unit, the third grinding unit, the second grinding unit and the first grinding unit on the left side and the right side are sequentially lifted, and the turnout is decelerated and stopped;
forward polishing is carried out on turnout bent strands, polishing speed is set to be 1km/h from the position 25 m in front of the turnout, the first polishing unit, the second polishing unit, the third polishing unit and the fourth polishing unit on the left side and the right side are respectively lifted and lowered to polish the turnout, the polishing operation is carried out to the position 25 m behind the turnout, the first polishing unit, the second polishing unit, the third polishing unit and the fourth polishing unit on the left side and the right side are sequentially lifted, and the turnout is decelerated and stopped;
the turnout bent strand is reversely ground, the grinding speed is set to be 1km/h from 25 m behind the turnout tail, the fourth grinding unit, the third grinding unit, the second grinding unit and the first grinding unit on the left side and the right side are respectively lifted and lowered to grind the turnout, the grinding operation is carried out to 25 m in front of the turnout point, the fourth grinding unit, the third grinding unit, the second grinding unit and the first grinding unit on the left side and the right side are sequentially lifted, and the turnout is decelerated and stopped;
carrying out quality detection on polishing operation, carrying out profile and roughness measurement on the polished turnout, adjusting the setting parameters of each polishing unit according to the measurement result, and carrying out repeated polishing operation until the technical requirements of the polished turnout are met;
the steel rail is ground and polished, the grinding stones of the third grinding units on the left side and the right side are replaced by paper thousand impellers, grinding parameters and operation speed are set, only the third grinding units are started, comprehensive grinding and polishing treatment is carried out on straight strands, curved strands, switch points, frog points and the like of turnouts, the working edges and the top surfaces of the steel rail are ground and polished for the first time, and the non-working edges and the top surfaces of the steel rail are ground and polished for the second time.
Any technical scheme can at least produce the following technical effects:
the turnout steel rail grinding device provided by the invention utilizes the curved surface grinding machine to grind, realizes the comprehensive grinding of the whole turnout through the four grinding units, and forms a more complete curved surface envelope after grinding, thereby improving the grinding 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. 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 the drawings without creative efforts.
FIG. 1 is a schematic diagram of a combination of four sets of sharpening units according to the 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 more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The invention provides a device for polishing a turnout steel rail by using a curved surface polisher, which comprises the curved surface polisher as shown in figures 1-5, 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. 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 turnout steel rail grinding device provided by the invention utilizes the curved surface grinding machine to grind, the four grinding units are used for comprehensively grinding the whole turnout, and the shapes of different rail types are matched and tread envelopes are formed after the four grinding units are adjusted and combined, so that a more complete curved surface envelope is formed after grinding, and the grinding quality is improved; 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. Therefore, the invention can be set and adjusted according to turnouts of different models, and the applicability is improved.
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 concrete grinding construction mode of the invention comprises six steps of forward grinding of the turnout straight strand, reverse grinding of the turnout straight strand, forward grinding of the turnout curved strand, reverse grinding of the turnout curved strand, quality detection after grinding operation and turnout polishing treatment, and each step also comprises more detailed operation, which is 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 scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
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 a 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; 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.
2. 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 °.
3. 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.
4. 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.
5. 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.
6. 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.
7. 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.
8. 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.
9. 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.
10. A grinding method using the device for grinding turnout rail by using a curved surface grinding machine according to any one of claims 1-9, comprising the following steps:
the straight strand of the turnout is polished in the forward direction, the polishing device runs to a position 25 meters in front of the turnout, the polishing speed is set to be 1km/h, the first polishing unit, the second polishing unit, the third polishing unit and the fourth polishing unit on the left side and the right side are respectively lifted and lowered to polish the turnout, the polishing operation is carried out to a position 25 meters behind the turnout, the first polishing unit, the second polishing unit, the third polishing unit and the fourth polishing unit on the left side and the right side are sequentially lifted, and the turnout is decelerated and stopped;
the turnout straight strand is reversely ground, the grinding speed is set to be 1km/h from 25 meters behind the turnout, the fourth grinding unit, the third grinding unit, the second grinding unit and the first grinding unit on the left side and the right side are respectively lifted and lowered to grind the turnout, the grinding operation is carried out to 25 meters in front of the turnout point, the fourth grinding unit, the third grinding unit, the second grinding unit and the first grinding unit on the left side and the right side are sequentially lifted, and the turnout is decelerated and stopped;
forward polishing is carried out on turnout bent strands, polishing speed is set to be 1km/h from the position 25 m in front of the turnout, the first polishing unit, the second polishing unit, the third polishing unit and the fourth polishing unit on the left side and the right side are respectively lifted and lowered to polish the turnout, the polishing operation is carried out to the position 25 m behind the turnout, the first polishing unit, the second polishing unit, the third polishing unit and the fourth polishing unit on the left side and the right side are sequentially lifted, and the turnout is decelerated and stopped;
the turnout bent strand is reversely ground, the grinding speed is set to be 1km/h from 25 m behind the turnout tail, the fourth grinding unit, the third grinding unit, the second grinding unit and the first grinding unit on the left side and the right side are respectively lifted and lowered to grind the turnout, the grinding operation is carried out to 25 m in front of the turnout point, the fourth grinding unit, the third grinding unit, the second grinding unit and the first grinding unit on the left side and the right side are sequentially lifted, and the turnout is decelerated and stopped;
carrying out quality detection on polishing operation, carrying out profile and roughness measurement on the polished turnout, adjusting the setting parameters of each polishing unit according to the measurement result, and carrying out repeated polishing operation until the technical requirements of the polished turnout are met;
the steel rail is ground and polished, the grinding stones of the third grinding units on the left side and the right side are replaced by paper thousand impellers, grinding parameters and operation speed are set, only the third grinding units are started, comprehensive grinding and polishing treatment is carried out on straight strands, curved strands, switch points, frog points and the like of turnouts, the working edges and the top surfaces of the steel rail are ground and polished for the first time, and the non-working edges and the top surfaces of the steel rail are ground and polished for the second time.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020207370091 | 2020-05-07 | ||
| CN202020737009 | 2020-05-07 |
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| CN111535096A true CN111535096A (en) | 2020-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020926552.6U Active CN212375650U (en) | 2020-05-07 | 2020-05-27 | Device for polishing turnout steel rail by utilizing curved surface polisher |
| CN202010459550.5A Withdrawn CN111535096A (en) | 2020-05-07 | 2020-05-27 | Device and method for polishing turnout steel rail by utilizing curved surface polisher |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020926552.6U Active CN212375650U (en) | 2020-05-07 | 2020-05-27 | Device for polishing turnout steel rail by utilizing curved surface polisher |
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| CN (2) | CN212375650U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113106795A (en) * | 2021-04-14 | 2021-07-13 | 哈尔滨铁路科研所科技有限公司 | Control system and control method for rail profile grinding wagon |
| CN114790669A (en) * | 2022-04-21 | 2022-07-26 | 北京同和时代轨道科技有限公司 | Curved surface grinding wagon with double-shaft bogie |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111648176A (en) * | 2020-06-10 | 2020-09-11 | 北京同和时代轨道科技有限公司 | Curved surface grinding machine and grinding process for carrying out profile grinding by using same |
-
2020
- 2020-05-27 CN CN202020926552.6U patent/CN212375650U/en active Active
- 2020-05-27 CN CN202010459550.5A patent/CN111535096A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113106795A (en) * | 2021-04-14 | 2021-07-13 | 哈尔滨铁路科研所科技有限公司 | Control system and control method for rail profile grinding wagon |
| CN114790669A (en) * | 2022-04-21 | 2022-07-26 | 北京同和时代轨道科技有限公司 | Curved surface grinding wagon with double-shaft bogie |
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| Publication number | Publication date |
|---|---|
| CN212375650U (en) | 2021-01-19 |
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Application publication date: 20200814 |
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