CN112482109A - Abrasive belt type steel rail turnout grinding vehicle - Google Patents
Abrasive belt type steel rail turnout grinding vehicle Download PDFInfo
- Publication number
- CN112482109A CN112482109A CN202011435045.3A CN202011435045A CN112482109A CN 112482109 A CN112482109 A CN 112482109A CN 202011435045 A CN202011435045 A CN 202011435045A CN 112482109 A CN112482109 A CN 112482109A
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- China
- Prior art keywords
- grinding
- abrasive belt
- rail
- chassis
- wheel
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- E01B31/17—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails by grinding
- E01B31/175—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails by grinding using grinding belts
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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
- E01B2203/00—Devices for working the railway-superstructure
- E01B2203/01—Devices for working the railway-superstructure with track
- E01B2203/012—Devices for working the railway-superstructure with track present, i.e. in its normal position
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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
- E01B2203/00—Devices for working the railway-superstructure
- E01B2203/14—Way of locomotion or support
- E01B2203/141—Way of locomotion or support on the track to be treated
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention relates to a sand belt type steel rail turnout grinding wagon, which comprises a wagon body, a chassis, an electric and control system, a self-walking system and a sand belt grinding wagon system, and is characterized in that: a self-walking system is arranged below the chassis, a vehicle body is arranged above the chassis, an electric and control system and an abrasive belt grinding vehicle system are arranged in a space defined by the vehicle body and the chassis, and the abrasive belt grinding vehicle system can pass through the space on the chassis to lift; wherein, two ends of the chassis are provided with a connecting hook and a towing hook. The abrasive belt type steel rail turnout grinding vehicle has the advantages of strong adaptability, high non-grinding operation running speed, low grinding cost, grinding units suitable for grinding various different steel rail defects at the same time and the like, can solve the problem caused by the fact that the existing steel rail grinding equipment needs longer skylight time, improves the operation efficiency, and has good flexibility to adapt to various actual working conditions and various types of steel rails.
Description
Technical Field
The invention relates to the technical field of steel rail grinding, in particular to a sand belt type steel rail turnout grinding vehicle.
Background
With the rapid development of the rail transit industry in China, the laying mileage of the steel rail is increased year by year, the weight and the train running density of a train are increased continuously, the mileage and the number of groups of lines in a turnout area are increased year by year, the same positive line is adopted, and the surface of the steel rail in the area can also show diseases in various forms such as wave-shaped abrasion, fat edge, block falling, fish scale pattern, joint collapse and the like. If the above-mentioned diseases can not be cleared away in time, can influence the train and pass through the regional operation stationarity of switch, lead to the vertical shake of train or lateral sway, directly influenced the speed of marcing that the train passed through the switch.
The rail grinding is the only accepted effective technology capable of removing the damage in the global scope, the quality of the rail carrying tread can be improved by removing the material of the damaged layer by using the grinding tool, the service life of the rail is prolonged, and the safe operation of the train is ensured. The abrasive belt grinding is a newly proposed steel rail maintenance technology, the application characteristics of elastic grinding, cold grinding and the like of the abrasive belt grinding are fully exerted, the steel rail grinding operation process has the advantages of high efficiency, high quality, low cost, high safety and the like, and the abrasive belt grinding machine is used for the steel rail maintenance operation in a small abrasive belt grinding machine mode.
Although various large-scale equipment such as grinding wheels, milling cutters and the like serving as grinding tools appear in the field of rail grinding maintenance, the steel rail grinding maintenance method still has various defects in the practical application process, and the defects are specifically shown as follows:
(1) the large-scale grinding equipment is difficult to adapt to the actual requirements of grinding in a turnout area, the conventional 96-head grinding vehicle is large in size and poor in flexibility, and the turnout area has multiple steel rail forms such as a switch rail, a frog and a turnout core, so that the conventional large-scale grinding vehicle is difficult to be used for line maintenance in the turnout area.
(2) At present, most grinding tools such as grinding wheels and milling cutters can realize stock rail maintenance in turnout areas, an end face grinding mode and a profiling milling operation mode are adopted, the method is not suitable for steel rail maintenance in other modes, and a large number of blank operation points are left in actual operation.
(3) Switch rails, switch cores and the like in turnout areas belong to steel rail forms with variable cross sections, the bearing areas change greatly, diseases are caused frequently, rail polishing is achieved in the mode of manually operating a small machine at present, the operation efficiency is low, and the operation quality excessively depends on manual experience.
In order to overcome the shortcomings displayed in the application process of the conventional polishing equipment, the requirement of working condition diversification in the field of steel rail polishing maintenance is met, the skylight time is fully utilized to improve the polishing efficiency, and the novel polishing equipment with the self-powered, non-polishing running speed and adjustable polishing running speed is urgently needed to be researched and developed.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the abrasive belt type steel rail turnout grinding vehicle which has the advantages of strong adaptability, high non-grinding operation running speed, low grinding cost, grinding units suitable for grinding various different steel rail diseases simultaneously and the like, can solve the problem that the conventional steel rail grinding equipment needs longer skylight time, improves the operation efficiency, and has better flexibility so as to adapt to various actual working conditions and various types of steel rails.
The technical scheme of the invention is as follows:
a sand belt type steel rail turnout grinding wagon comprises a wagon body, a chassis, an electric and control system, a self-walking system and a sand belt grinding wagon system, wherein the self-walking system is arranged below the chassis, the wagon body is arranged above the chassis, the electric and control system and the sand belt grinding wagon system are arranged in a space limited by the wagon body and the chassis, and the sand belt grinding wagon system can pass through the space on the chassis to be lifted; wherein, two ends of the chassis are provided with a connecting hook and a towing hook.
Preferably, the vehicle body is provided with a lifting frame, a warning lamp, a lighting lamp and a buzzer.
Preferably, the self-walking system comprises two power steering frames arranged at two ends of the vehicle body, and each power steering frame is provided with a direct current driving motor and a walking wheel.
Preferably, a damping spring is provided on the power steering frame of the self-traveling system.
Preferably, the abrasive belt grinding wagon system comprises four first grinding units, four second grinding units, a wagon underframe and travelling wheels, wherein the four first grinding units and the four second grinding units are alternately combined and distributed on two sides of the wagon underframe in pairs, the arrangement sequence of the grinding units on the two sides is opposite, and the four grinding units on the single rail side are three grinding units with different functions which respectively carry out grinding operation on the rail top surface, the rail side surface and the whole rail surface; the two ends of the chassis are provided with walking wheels.
Preferably, the first polishing unit is an abrasive belt polishing wheel train composed of a first driving wheel, a guide wheel, a first abrasive belt and a first contact wheel, the first motor drives the whole abrasive belt polishing wheel train to repair a steel rail defect, the second motor drives the driving wheel to move in the vertical direction through a first cylindrical guide rail, the first cylinder drives the whole polishing unit to move in the vertical direction through a second cylindrical guide rail, and the second cylinder drives the whole polishing unit to rotate at a small angle around the rotating mechanism.
Preferably, the second unit of polishing comprises a triangular abrasive belt polishing wheel train consisting of a second driving wheel, a second abrasive belt, a tensioning wheel and a second contact wheel, a third motor drives the whole abrasive belt polishing wheel train through a belt to repair a steel rail defect, a handle is connected to the tensioning wheel, a third cylinder drives the whole polishing unit to move transversely through a linear guide rail, a fourth motor drives the whole polishing unit to deflect around a shaft, and the fourth cylinder drives the whole polishing unit to move vertically through a vertical guide rail.
According to the technical scheme of the invention, the embodiment of the invention has the following beneficial effects:
(1) the power bogie is utilized to provide driving power for the grinding wagon, high-speed driving of idle running can be achieved, time is saved, each wagon carries 8 grinding heads, and the sanding wagon is provided with power, so that flexibility of equipment operation is greatly improved.
(2) The two polishing units in the embodiment of the invention have different function definitions, the problem of complex mechanism caused by uniform function definitions of all polishing units is solved, and the contact wheel and the rail surface are in copying contact by utilizing the concave cambered surface contact wheel.
(3) The rail grinding machine realizes rail grinding by adopting an abrasive belt peripheral surface grinding mode, can meet different requirements of various rail forms in a turnout area, realizes automatic grinding of full coverage of rail types in the turnout area, and can be expected to get rid of manual small-machine grinding operation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced, and it should be noted that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the following drawings without any creative effort.
Fig. 1 is a schematic view of an abrasive belt type steel rail turnout grinding wagon according to an embodiment of the present invention;
FIG. 2 is a schematic view of the connection of an abrasive belt type steel rail turnout sanding vehicle according to an embodiment of the present invention;
fig. 3 is a schematic view of a self-traveling system of a sand-belt type steel rail turnout grinding wagon according to an embodiment of the present invention;
fig. 4 is a schematic view of a system of a belt sander for a steel rail turnout provided by an embodiment of the present invention;
fig. 5 is a schematic view of a type a grinding unit of the abrasive belt type steel rail turnout grinding wagon according to the embodiment of the invention;
fig. 6 is a schematic view of B types of grinding units of a sand-belt steel rail turnout grinding wagon according to an embodiment of the present invention;
fig. 7 is a schematic view of a contact wheel of a type a grinding unit of the abrasive belt type steel rail turnout grinding wagon according to the embodiment of the invention.
Figure 8 shows the working range of two sanding units according to the invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
In order to facilitate understanding of the embodiments of the present invention, the following detailed description is further explained by way of examples with reference to the accompanying drawings.
The invention will be described below with reference to the accompanying drawings, but the invention is not limited thereto.
Fig. 1 illustrates a general schematic diagram of a sanding belt type steel rail turnout sanding vehicle, which comprises a vehicle body 2, a chassis 5, a self-walking system 6, a sanding belt sanding vehicle system 7 and an electrical and control system, wherein the self-walking system 6 is arranged below the chassis 5, the vehicle body 2 is arranged above the chassis 5, the electrical and control system and the sanding belt sanding vehicle system 7 are arranged in a space defined by the vehicle body 2 and the chassis 5, and the sanding belt sanding vehicle system 7 can pass through the space on the chassis to be lifted. The sanding vehicle bears the weight of equipment through a steel rail 8 and is used for driving guidance, a belt sanding vehicle system 7 in the sanding vehicle is lifted in the vehicle body 2, and the sanding vehicle can run at different speeds in a working state and a non-working state by combining with a self-walking system 6.
The grinding wagon body 2 is provided with basic functional accessories such as a hanger 1, a warning light 3, an illuminating lamp 4 and the like.
The chassis 5 of the grinding wagon is provided with basic functional accessories such as a connecting hook 10, a tow hook 11 and the like.
Fig. 2 illustrates a schematic diagram of the interconnection of abrasive belt type steel rail turnout grinding wagon, and two or more grinding wagons can be connected through a connecting hook 10 and a connecting pin 9 on a grinding wagon chassis 5 to form a longer grinding train to meet the operation requirements of steel rail lines with different operation lengths and working conditions.
Fig. 3 illustrates a schematic diagram of a running part of the abrasive belt type steel rail turnout sanding vehicle, the self-running system 6 comprises two power steering frames 12 arranged at two ends of the vehicle body 2, each power steering frame 12 is provided with a direct current driving motor 13 and a running wheel 14, and the power steering frames 12 of the self-running system are provided with damping springs 15. Wherein, power steering frame 12 provides the major structure for it, and DC drive motor 13 provides power for it, and walking wheel 14 makes it can walk on rail 8, and damping spring 15 reduces the vibration that produces in its walking process.
Fig. 4 illustrates a schematic diagram of an abrasive belt grinding carriage system of an abrasive belt type steel rail turnout grinding carriage, which is composed of four grinding units 16, four grinding units 17, a carriage 18, traveling wheels 19 and other main sub-modules, wherein the grinding units 16 and the grinding units 17 are alternately combined in pairs, the arrangement sequence of the grinding units on two sides is opposite, the grinding units can simultaneously treat various rail defects, and the whole system moves on a steel rail through the traveling wheels 19.
The polishing units 16 and 17 can meet the requirements of vertical, horizontal, rotary, deflection and other motions required by rail profile polishing, four sets of polishing units on a single rail side can realize soft linkage pressing operation on the same position of a rail surface by utilizing electric control, and any position in a rail tread range can be independently polished.
The polishing unit 16 shown in fig. 5 is composed of a driving wheel 19, a guide wheel 20, an abrasive belt 21 and a contact wheel 22 to form an abrasive belt polishing wheel train, a driving motor 27 drives the whole abrasive belt polishing wheel train to repair the rail defect, a motor 24 drives the driving wheel 19 to move in the vertical direction through a cylindrical guide rail 28, so that the abrasive belt 21 is replaced, a cylinder 29 drives the whole polishing unit to move in the vertical direction through the cylindrical guide rail 26, and a cylinder 25 drives the whole polishing unit to rotate at a small angle around a rotating mechanism 23.
The polishing unit 17 shown in fig. 6 is composed of a driving wheel 34, an abrasive belt 21, a tension wheel 32 and a contact wheel 31 to form a triangular abrasive belt polishing wheel train, a driving motor 33 drives the whole abrasive belt polishing wheel train through a belt 41 to repair a steel rail defect, a handle 36 drives the tension wheel 32 to replace the abrasive belt 21, a cylinder 30 drives the whole polishing unit to move transversely through a linear guide rail 38, a motor 37 drives the whole polishing unit to deflect around a shaft 35, and a cylinder 40 drives the whole polishing unit to move vertically through a vertical guide rail 39.
Fig. 7 illustrates the geometry of the contact wheel 22 in the grinding unit 16, and the radius R, the concave curvature ρ and the width T of the contact wheel 22 can be selected according to the rail defect and the working condition, so as to improve the utilization rate of the abrasive belt 21 and reduce the cost.
According to the invention, various functional modules in the polishing equipment are integrated into a single device, so that high integration and operation flexibility are realized, and the development trend of device diversification in the steel rail polishing field is met. The electric and control system has the capability of providing control for the running and operation of the whole grinding vehicle, and can flexibly control the running of the grinding vehicle, the movement and operation of the grinding unit and the action of other electrical elements. The self-walking system mainly comprises two power bogies, is driven by a direct current motor, and can provide running power for a grinding train, so that the grinding train can have different running speeds in two states of grinding operation and non-grinding operation.
The abrasive belt grinding vehicle system provided by the invention is provided with eight abrasive belt grinding units capable of working independently, and can meet the requirements of vertical, horizontal, rotary, deflection and other motions required by rail profile grinding, four grinding units on a single rail side can realize soft linkage pressing on the same position of a rail surface by utilizing electric control, and any position in the range of a rail tread can be ground independently.
The four sets of grinding units on the single rail side are three grinding units with different functions, and the grinding units respectively perform grinding operation on the rail top surface, the rail side surface and the whole rail surface, namely the grinding units A in the attached drawing 5 are two, so that grinding at two positions, namely the inner side of the rail top and the outer side of the rail top, can be realized; the B types of grinding units in the attached figure 6 can realize full-coverage grinding of the steel rail tread and can deflect in a large range. The working range of both types of sharpening units is shown in figure 8.
The main body frame and the chassis of the abrasive belt type steel rail turnout grinding wagon realize light weight design by adopting a material selection mode of combining steel and aluminum profiles, the main body frame is externally coated with an aluminum plate to form the appearance of the grinding wagon, and two ends of the chassis are provided with connecting devices, so that a plurality of sections of grinding wagons can be connected to form a grinding train.
Although the embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the present invention is not limited to the embodiments disclosed, and that various changes, modifications and substitutions may be made therein by those skilled in the art without departing from the scope of the present invention as defined by the appended claims.
Claims (8)
1. The utility model provides a sand belt steel track trouble car of polishing, includes automobile body, chassis, electric and control system, from walking system and sand belt car of polishing system, its characterized in that: a self-walking system is arranged below the chassis, a vehicle body is arranged above the chassis, an electric and control system and an abrasive belt grinding vehicle system are arranged in a space defined by the vehicle body and the chassis, and the abrasive belt grinding vehicle system can pass through the space on the chassis to lift; wherein, two ends of the chassis are provided with a connecting hook and a towing hook.
2. The abrasive belt type steel rail turnout sanding vehicle according to claim 1, wherein a lifting frame, a warning light, a lighting lamp and a buzzer are arranged on the vehicle body.
3. The abrasive belt type steel rail turnout sanding vehicle of claim 1, wherein the self-walking system comprises two power steering frames provided at both ends of the vehicle body, each power steering frame being provided with a dc drive motor and a walking wheel.
4. The abrasive belt steel rail turnout sanding vehicle of claim 3, wherein a shock absorbing spring is provided on the power steering frame of the self-walking system.
5. The abrasive belt type steel rail turnout grinding wagon of any one of claims 1-4, wherein the abrasive belt grinding wagon system comprises four first grinding units, four second grinding units, a wagon underframe and travelling wheels, wherein the four first grinding units and the four second grinding units are alternately combined and distributed on two sides of a wagon bottom price, and the four grinding units on the single rail side are three grinding units with different functions, which respectively perform grinding work on the rail top surface, the rail side surface and the whole rail surface; the two ends of the chassis are provided with walking wheels.
6. The abrasive belt type steel rail turnout grinding wagon of claim 5, wherein the first grinding unit is an abrasive belt grinding wheel train consisting of a first driving wheel, a guide wheel, a first abrasive belt and a first contact wheel, the first motor drives the whole abrasive belt grinding wheel train to repair the rail defect, the second motor drives the driving wheel to move in the vertical direction through a first cylindrical guide rail, the first cylinder drives the whole grinding unit to move in the vertical direction through a second cylindrical guide rail, and the second cylinder drives the whole grinding unit to rotate around the rotating mechanism by a small angle.
7. The abrasive belt type steel rail turnout grinding wagon of claim 5, wherein the second grinding unit comprises a triangular abrasive belt grinding wheel train consisting of a second driving wheel, a second abrasive belt, a tension wheel and a second contact wheel, a third motor drives the whole abrasive belt grinding wheel train through a belt to repair the rail defect, a handle is connected to the tension wheel, a third cylinder drives the whole grinding unit to move in the transverse direction through a linear guide rail, a fourth motor drives the whole grinding unit to deflect around a shaft, and a fourth cylinder drives the whole grinding unit to move in the vertical direction through a vertical guide rail.
8. The abrasive belt type steel rail turnout grinding wagon of claim 6, wherein the second grinding unit comprises a triangular abrasive belt grinding wheel train consisting of a second driving wheel, a second abrasive belt, a tension wheel and a second contact wheel, a third motor drives the whole abrasive belt grinding wheel train through a belt to repair the rail defect, a handle is connected to the tension wheel, a third cylinder drives the whole grinding unit to move in the transverse direction through a linear guide rail, a fourth motor drives the whole grinding unit to deflect around a shaft, and a fourth cylinder drives the whole grinding unit to move in the vertical direction through a vertical guide rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011435045.3A CN112482109A (en) | 2020-12-10 | 2020-12-10 | Abrasive belt type steel rail turnout grinding vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011435045.3A CN112482109A (en) | 2020-12-10 | 2020-12-10 | Abrasive belt type steel rail turnout grinding vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112482109A true CN112482109A (en) | 2021-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011435045.3A Pending CN112482109A (en) | 2020-12-10 | 2020-12-10 | Abrasive belt type steel rail turnout grinding vehicle |
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| CN (1) | CN112482109A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114952515A (en) * | 2022-06-01 | 2022-08-30 | 郑州铁路职业技术学院 | Switch goat prosthetic devices |
| CN115319592A (en) * | 2022-06-17 | 2022-11-11 | 北京交通大学 | Steel rail turnout profile polishing equipment |
| CN116556120A (en) * | 2023-06-28 | 2023-08-08 | 北京交通大学 | Quick assembly and disassembly type steel rail polishing equipment integrated with various process units |
-
2020
- 2020-12-10 CN CN202011435045.3A patent/CN112482109A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114952515A (en) * | 2022-06-01 | 2022-08-30 | 郑州铁路职业技术学院 | Switch goat prosthetic devices |
| CN115319592A (en) * | 2022-06-17 | 2022-11-11 | 北京交通大学 | Steel rail turnout profile polishing equipment |
| CN115319592B (en) * | 2022-06-17 | 2024-05-31 | 北京交通大学 | Rail fork heart profile equipment of polishing |
| CN116556120A (en) * | 2023-06-28 | 2023-08-08 | 北京交通大学 | Quick assembly and disassembly type steel rail polishing equipment integrated with various process units |
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