CN114952179B - Online track differential circulation repairing method - Google Patents
Online track differential circulation repairing method Download PDFInfo
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- CN114952179B CN114952179B CN202210783358.0A CN202210783358A CN114952179B CN 114952179 B CN114952179 B CN 114952179B CN 202210783358 A CN202210783358 A CN 202210783358A CN 114952179 B CN114952179 B CN 114952179B
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 230000008439 repair process Effects 0.000 claims description 63
- 238000003801 milling Methods 0.000 claims description 33
- 238000003754 machining Methods 0.000 claims description 6
- 238000003672 processing method Methods 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 description 28
- 238000009826 distribution Methods 0.000 description 8
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000008263 repair mechanism Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/28—Electric drives
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
The invention provides an online track differential circulation repairing method, which comprises the following steps: the repairing vehicle moves forwards along the steel rail to be repaired, a plurality of repairing cutters mounted on the repairing vehicle move circularly along a closed path, and the repairing cutters at the repairing station move backwards at a constant speed so as to perform continuous and non-repeated repairing operation. The repairing vehicle moves forwards at a speed far higher than the existing operation speed, a plurality of repairing cutters on the repairing station move backwards and circularly at a speed different from the speed of the repairing vehicle at a constant speed, so that the on-line differential repairing processing of the steel rail is realized, each repairing cutter on the repairing station independently operates on each station, continuous, non-repeated and simultaneous repairing operation is generally formed, and the length of the repaired steel rail line is far longer than that of the repaired steel rail line by the existing method in the same time period, thereby rapidly completing the repairing operation of the rail transit and remarkably improving the repairing efficiency.
Description
Technical Field
The invention relates to the technical field of rail maintenance and repair processing of rail transit, in particular to an online rail differential circulation repair processing method.
Background
In rail transit such as subways, light rails, railways, high-speed rails and the like, steel rails are adopted as running guide rails. Because long-term traffic use, various diseases such as hardening layer, overlap, ripples mill are produced on the rail surface easily, if not in time repair extremely easily causes bigger potential safety hazard, say: cracks, breaks, pits, etc., seriously affecting the driving safety. There are two schemes for solving the disease: firstly, replacing a steel rail; and secondly, repairing and processing the rail track surface of the steel rail to remove diseases. However, the replacement cost of the subway is about 400 ten thousand yuan per kilometer, the replacement cost of a 25 kilometer subway is about 1 hundred million, and the replacement time is at least two weeks, so that the operation of the rail transit is seriously affected, and therefore, the scheme I is almost infeasible, and the scheme II is often adopted. At present, the most advanced international repair processing equipment is an Austrian Lin Xinge milling and grinding vehicle, the maximum operation speed of the equipment is 500m/h, if the feeding speed of repair cutting processing is further improved, abnormal heating, tool breakage and the like can occur to damage the tool, the window period is maintained for 3-5 hours each day for subways and high-speed railways, according to the speed, a single milling and grinding vehicle can repair 1.5-2.5km a day, the repair efficiency is lower, and the production requirement is difficult to meet, so that the improvement of the rail repair efficiency is needed.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides an online track differential circulation repairing method, which comprises the following steps: the repair carriage moves forward along the rail to be repaired, a plurality of repair cutters mounted on the repair carriage move cyclically along a closed path, and the repair cutters at the repair stations move backward to perform repair operations continuously, non-repeatedly and simultaneously at the respective stations.
Further, the repair cutters are arranged at equal intervals, the number of the repair cutters which are simultaneously operated on the repair station is n, n is an integer not smaller than 2, and at least two repair cutters simultaneously perform repair operation.
Further, the repair carriage moves forward at a speed of V 1, the repair tool moves clockwise along a closed path at a speed of V 2, V 2≠V1, and the actual feeding speed of the repair tool at the repair station is V 0,V0≥V1/n, wherein V 0 is less than or equal to the maximum safe repair speed tolerated by the repair tool, and when V 1＞V2, the repair tool at the repair station repairs forward; when V 1＜V2 is reached, the repairing tool at the repairing station is repaired backwards.
Further, when V 1＞V2, the sizes V 2＝V1 (n-1)/n of V 2 and V 1; when V 1＜V2, the sizes V 2＝V1 (n+1)/n of V 2 and V 1.
Further, when V 1＞V2, the sizes V 1(n-1)/n-10≤V2＜V1 (n-1)/n of V 2 and V 1; when V 1＜V2, the sizes V 1(n+1)/n＜V2≤V1 (n+1)/n+10 of V 2 and V 1.
Further, the closed path is in a waist shape, and the lower waist of the waist shape is the repair station.
Further, the repair tool is a formed milling cutter.
According to the online rail differential circulation repairing method provided by the invention, the plurality of repairing cutters on the repairing station simultaneously and circularly move backwards at a constant speed different from the advancing speed of the repairing vehicle, so that the online differential repairing of the steel rail is realized, each repairing cutter on the repairing station independently works on each station to repair the steel rail, each cutter continuously, non-repeatedly and simultaneously performs sectional repairing operation, continuous non-repeatedly and simultaneously repairing operation is generally formed, the repairing vehicle performs repairing operation at a safe operating speed which is multiple times that of the repairing cutter, and the length of the repaired steel rail is far longer than that of the repairing vehicle in the same time period, so that the rail repairing operation can be rapidly completed, and the repairing efficiency is remarkably improved.
Drawings
FIG. 1 is a schematic structural view of an on-line track differential circulation repairing and processing device provided by the invention;
FIG. 2 is a schematic diagram of the driving mechanism and repairing mechanism (the shield is not shown) according to the present invention;
FIG. 3 is a schematic illustration of the drive mechanism and repair mechanism of the present invention with the power panel removed;
FIG. 4 is a schematic view of the driving mechanism, the distribution board and the frame according to the present invention;
FIG. 5 is a schematic view of a repairing mechanism according to the present invention;
Wherein, 1, main frame; 11. a guide rail; 12. a shield; 13. a first mounting plate; 14. a connecting piece; 15. a power distribution board; 16. a conductive slideway; 17. a second mounting plate; 18. a walking wheel; 2. a driving mechanism; 21. a driving motor; 22. a speed reducing mechanism; 23. chain wheel shaft; 24. a drive sprocket; 25. a chain; 26. a driven sprocket; 3. a repair mechanism; 31. a connecting block; 32. a mounting base; 33. repairing the motor; 34. a coupling; 35. a milling cutter I; 36. a guide wheel; 37. passing through an electric brush; 38. a milling cutter II; 4. rail for rail
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be fixedly connected, disposed, or detachably connected, disposed, or integrally connected, disposed, for example. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1, the present invention provides an on-line track differential circulation repairing device, comprising: the device comprises a main frame 1, a driving mechanism 2 and a plurality of groups of repairing mechanisms 3, wherein the driving mechanism 2 is arranged on the main frame 1, a plurality of groups of repairing mechanisms 3 are arranged on the driving mechanism 2, and the repairing mechanisms 3 are connected with a chain 25 of the driving mechanism 2 through connecting blocks 31. The driving mechanism 2 drives the repairing mechanism 3 to do circular motion on the main frame 1.
The bottom of the main frame 1 is provided with travelling wheels 18, and the main frame 1 travels forward along the rails 4 to be repaired under the traction of a train head or a power unit mounted on the main frame 1.
As shown in fig. 4, two mounting plates 13 are connected through a connecting piece 14 to form an i-shaped auxiliary frame, a waist-shaped guide rail 11 is arranged on each of the two mounting plates 13 and is fixedly connected with the main frame 1 through the guide rail 11, a shield 12 is arranged on the outer side of the guide rail 11, a distribution board 15 is arranged on the outer side of one of the mounting plates 13, an annular conductive slideway 16 is arranged on the distribution board 15, and the distribution board takes electricity from the main frame or directly from a train head.
The driving mechanism 2 comprises a driving motor 21, a speed reducing mechanism 22, a sprocket shaft 23, a driving sprocket 24, a chain 25 and a driven sprocket 26 which are arranged on the auxiliary frame. Wherein the reduction mechanism 22 is constituted by a gear set having a certain reduction ratio.
The left side and the right side of the front end of the auxiliary frame are respectively provided with a driving sprocket 24, the left side and the right side of the rear end of the auxiliary frame are respectively provided with a driven sprocket 26, the driving sprocket 24 positioned on the left side is connected with the driven sprocket 26 positioned on the left side through a chain 25, the driving sprocket 24 positioned on the right side is connected with the driven sprocket 26 positioned on the right side through another chain 25, namely, one chain 25 is positioned on the left side, the other chain 25 is positioned on the right side, and the two chains are parallel. The shroud 12 forms a semi-seal with the mounting plate one 13 and the main frame to protect the drive sprocket 24, the driven sprocket 26, and the chain 25.
As shown in fig. 2, 3 and 5, each repairing mechanism 3 comprises a connecting block 31, a mounting seat 32, a repairing motor 33, a coupler 34, a milling cutter one 35, a guide wheel 36 and an over-brush 37, wherein the milling cutter one is used as a repairing cutter for steel rail repairing operation, one end of the mounting seat 32 is fixedly arranged on a left chain through the connecting block 31, the other end of the mounting seat is fixedly arranged on a right chain through the other connecting block 31, the repairing motor 33 is arranged on the mounting seat 32, one end of the coupler 34 is connected with the repairing motor 33, the other end of the coupler 34 is connected with the milling cutter one 35, and the milling cutter one 35 is also arranged on the mounting seat 32. Two rows of guide wheels 36 are fixedly arranged on the inner side surface of the connecting block 31, an over-brush 37 is arranged on the outer side surface of one connecting block 31, and the over-brush 37 is matched with the conductive slideway 16 so as to take electricity from the conductive slideway 16 to supply power for the repairing motor 33. As shown in fig. 3 and 4, the shield 12 forms a seal with the first mounting plate 13 and the distribution board 15 to seal the brush 37 and the conductive runner 16.
As shown in fig. 2,3 and 4, the chain 25 is fixedly connected with the mounting base 32 through the connecting block 31, and the guide rail 11 is clamped into the two rows of guide wheels 36, so that the repairing mechanism is mounted on the sub-frame. In addition, a second mounting plate 17 is arranged on the first mounting plate 13 for mounting the distribution board 15, and the over-brushes 37 are always abutted against the conductive slideway 16 on the distribution board 15 to form stable connection so as to provide power for the repairing motor 33 for milling. During operation, the driving motor 21 is started, the driving motor 21 drives the speed reducing mechanism 22 to rotate, the speed reducing mechanism and the driving sprocket 24 share the sprocket shaft 23, the driving sprocket 24 is driven to rotate clockwise, the driven sprocket 26 is driven to rotate clockwise through the chain 25, the repairing mechanism 3 is driven to rotate through the connecting block 31, the guide rail 11 is clamped into the two rows of guide wheels 36, the guide wheels 36 are fixedly arranged on the connecting block 31, the connecting block 31 moves circularly along the guide rail 11 under the driving of the chain 25, the position from the milling cutter I contacting the steel rail 4 to the section away from the steel rail 4 is a repairing station, and the milling cutter I on the repairing station on the steel rail moves backwards. In theory, at least 2 milling cutters 35 are simultaneously positioned at the repairing station for repairing operation, so that the repairing operation can be realized at n times of the safe operation speed of the repairing cutter, and n is the number of repairing mechanisms on the repairing station.
Further, as shown in fig. 1, a milling cutter I of a repairing mechanism is a rough milling cutter, a milling cutter II 38 is further arranged behind a feeding path of the milling cutter I on the same mounting seat, the milling cutter II 38 is a finish milling cutter, and the machining precision of the two milling cutters is different so as to finish rough machining and finish machining of track repairing; the rail repairing precision is improved by milling twice through rough milling and finish milling, repairing machining operation of rough and finish working procedures is completed in one-time walking process by the repairing vehicle, operation time is saved, and repairing precision is improved.
As shown in fig. 2 and 3, in this embodiment, there are 14 groups of repairing mechanisms, and correspondingly, there are 14 milling cutters one, and there are 5 milling cutters one all the time in the repairing station.
In addition, the invention also provides an online track differential circulation repairing method, which comprises the following steps: the repairing carriage moves forwards along the rail to be repaired, a plurality of repairing cutters (namely a first milling cutter or a first milling cutter and a second milling cutter) arranged on the repairing carriage move circularly along a closed path, and the repairing cutters on the repairing stations move backwards to continuously, repeatedly and simultaneously perform repairing operations on the respective stations.
The repair tools are arranged at equal intervals, the number of the repair tools which are simultaneously operated on the repair station is n, n is an integer not smaller than 2, and at least two repair tools simultaneously perform repair operation.
The repairing carriage moves forward at the speed of V 1, namely the repairing speed of the repairing carriage, the repairing cutter moves clockwise along the closed path at the speed of V 2 (the repairing cutter speed is the repairing mechanism speed), V 2≠V1 (if V 2＝V1, the feeding speed of the repairing cutter is V 0＝∣V1-V2 |=0, no repairing operation is performed), the actual feeding speed of the repairing cutter at the repairing station is V 0＝∣V1-V2, when V 0＝V1/n, n repairing cutters can just complete the seamless repairing of the steel rail with the moving distance of the repairing carriage in the same time period, when V 0＞V1/n, the feeding total distance of n repairing cutters is larger than the moving distance of the repairing carriage in the same time period, namely the no-load state or the repeated milling repairing state exists in the repairing cutter, when V 0＜V1/n, the feeding total distance of n repairing cutters is smaller than the moving distance of the repairing carriage, the repairing omission state exists, wherein V 0 is smaller than or equal to the maximum safe repairing speed of the repairing cutter in the repairing station, so that the current method can realize the largest cycle speed of V5657 in the current implementation of V 1≤nV0 is higher than the maximum speed of V 1≤nV0 m=377m, and the current method can realize the largest cycle speed of the repairing carriage is 500 h in the current implementation of the current case. In this example, unless otherwise specified, the speed units are m/h.
In the repair milling process, firstly, the repair tool at the repair station is repaired forwards, V 1＞V2 is needed, the size relation between V 2 and V 1 is V 2＝V1 (n-1)/n, and when V 0 =500 m/h and n=5 are taken as an example, the maximum repair speed is V 1＝2500m/h,V2 =2000 m/h. However, in order to avoid repair omission caused by tool wear or error problems such as equipment clearance, the sizes of V 2 and V 1 are preferably V 1(n-1)/n-10≤V2＜V1 (n-1)/n, the repair tool can actively repeat milling or idle for a small distance, and the maximum repair speed V 1＝2500m/h,1990m/h≤V2 is more suitable than 2000m/h, for example, V 0 =500 m/h and n=5.
Secondly, when the repairing cutter on the repairing station is repaired backwards and V 1＜V2 is needed, the sizes of V 2 and V 1 are preferably V 2＝V1 (n+1)/n; taking V 0 =500 m/h as an example, the maximum repair speed is V 1＝2500m/h,V2 =3000 m/h. However, in order to avoid repair omission caused by tool wear or error problems such as equipment clearance, the sizes of V 2 and V 1 are preferably V 1(n+1)/n＜V2≤V1 (n+1)/n+10, and the milling or idle process is actively repeated backwards for a small distance. Taking V 0 =500 m/h for example, the maximum repair speed V 1＝2500m/h,3000m/h≤V2 < 3010m/h is suitable.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (6)
1. The online track differential circulation repairing and processing method is characterized by comprising the following steps of: the repairing vehicle moves forwards along the steel rail to be repaired, a plurality of repairing cutters mounted on the repairing vehicle circularly move clockwise along a closed path, the repairing cutters on the repairing stations move backwards to continuously, repeatedly and simultaneously repair the steel rail on the respective stations, the closed path is in a waist-round shape, the lower waist of the waist is the repairing stations, the length direction of the lower waist is parallel to the moving direction of the repairing vehicle on the steel rail to be repaired, the number of the repairing cutters simultaneously operating on the repairing stations is n, n is an integer not less than 2, and at least two repairing cutters simultaneously repair the steel rail.
2. The on-line track differential circulation repair machining method according to claim 1, wherein the repair cutters are arranged at equal intervals.
3. The on-line track differential circulation repair process method of claim 2, wherein the repair carriage moves forward at a speed V 1, the repair tool moves clockwise along the closed path at a speed V 2, V 2≠V1, the actual feed speed of the repair tool at the repair station is V 0,V0≥V1/n, wherein V 0 is less than or equal to the maximum safe repair speed tolerated by the repair tool, and the repair tool at the repair station is repaired forward when V 1＞V2; when V 1＜V2 is reached, the repairing tool at the repairing station is repaired backwards.
4. The on-line track differential circulation repair process of claim 3, wherein the magnitudes V 2＝V1 (n-1)/n of V 2 and V 1 when V 1＞V2; when V 1＜V2, the sizes V 2＝V1 (n+1)/n of V 2 and V 1.
5. The on-line track differential circulation repair process of claim 3, wherein the magnitudes V 1(n-1)/n-10≤V2＜V1 (n-1)/n of V 2 and V 1 when V 1＞V2; when V 1＜V2, the sizes V 1(n+1)/n＜V2≤V1 (n+1)/n+10 of V 2 and V 1.
6. The on-line orbital differential circulation repair machining method of claim 1, wherein the repair tool is a formed milling cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210783358.0A CN114952179B (en) | 2022-07-05 | 2022-07-05 | Online track differential circulation repairing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210783358.0A CN114952179B (en) | 2022-07-05 | 2022-07-05 | Online track differential circulation repairing method |
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| Publication Number | Publication Date |
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| CN114952179A CN114952179A (en) | 2022-08-30 |
| CN114952179B true CN114952179B (en) | 2024-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210783358.0A Active CN114952179B (en) | 2022-07-05 | 2022-07-05 | Online track differential circulation repairing method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104662229A (en) * | 2012-09-13 | 2015-05-27 | 福斯罗Mfl钢轨轧机有限责任公司 | Method and device for force-dependent controlling in the machining of rails |
| CN107386022A (en) * | 2017-01-11 | 2017-11-24 | 中国铁建高新装备股份有限公司 | A kind of online milling car of portable rail of subway |
| CN107587395A (en) * | 2017-08-23 | 2018-01-16 | 武汉瑞祥安科技股份有限公司 | A kind of drawn in trajectory shapes multiple car |
| CN108480732A (en) * | 2018-02-23 | 2018-09-04 | 中国神华能源股份有限公司 | Change the method for the contour shape in the cross section of milling cutter and its cutterhead and rail |
| CN113751777A (en) * | 2021-09-09 | 2021-12-07 | 美戈利(浙江)轨道交通研究院有限公司 | Online repair milling cutter for railway track |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020194722A1 (en) * | 2001-06-22 | 2002-12-26 | Galloway Christopher A. | Portable frog milling machine for use with railroad frog reconditioning and welding table |
-
2022
- 2022-07-05 CN CN202210783358.0A patent/CN114952179B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104662229A (en) * | 2012-09-13 | 2015-05-27 | 福斯罗Mfl钢轨轧机有限责任公司 | Method and device for force-dependent controlling in the machining of rails |
| CN107386022A (en) * | 2017-01-11 | 2017-11-24 | 中国铁建高新装备股份有限公司 | A kind of online milling car of portable rail of subway |
| CN107587395A (en) * | 2017-08-23 | 2018-01-16 | 武汉瑞祥安科技股份有限公司 | A kind of drawn in trajectory shapes multiple car |
| CN108480732A (en) * | 2018-02-23 | 2018-09-04 | 中国神华能源股份有限公司 | Change the method for the contour shape in the cross section of milling cutter and its cutterhead and rail |
| CN113751777A (en) * | 2021-09-09 | 2021-12-07 | 美戈利(浙江)轨道交通研究院有限公司 | Online repair milling cutter for railway track |
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| CN114952179A (en) | 2022-08-30 |
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