CN114952179A

CN114952179A - Online track differential circulating repair machining method

Info

Publication number: CN114952179A
Application number: CN202210783358.0A
Authority: CN
Inventors: 龙杰; 周金良
Original assignee: Wuhan Ruixiangan Technology Co ltd
Current assignee: Wuhan Ruixiangan Technology Co ltd
Priority date: 2022-07-05
Filing date: 2022-07-05
Publication date: 2022-08-30
Anticipated expiration: 2042-07-05
Also published as: CN114952179B

Abstract

The invention provides an online track differential circulating repair processing method, which comprises the following steps: the repairing vehicle moves forwards along the steel rail to be repaired, a plurality of repairing tools installed on the repairing vehicle move circularly along a closed path, and the repairing tools on the repairing station move backwards at a constant speed to perform continuous and unrepeated repairing operation. The repairing vehicle moves forwards at a speed far higher than the existing operation speed, the plurality of repairing tools on the repairing stations move backwards in a circulating mode at a constant speed different from the speed of the repairing vehicle, the online differential repairing processing of the steel rail is realized, each repairing tool on the repairing stations independently operates on each station, continuous, non-repeated and simultaneous repairing operation is formed on the whole, the length of the steel rail repaired by the method is far larger than that of the steel rail repaired by the existing method in the same time period, therefore, the repairing operation of rail transit can be completed quickly, and the repairing efficiency is improved remarkably.

Description

Online track differential circulating repair machining method

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 cycle repair processing method.

Background

In rail traffic such as subways, light rails, railways, high-speed rails and the like, steel rails are used as running guide rails. Because the long-term traffic is used, various diseases such as hardened layer, overlap, ripples mill are easily produced on the rail surface, if not in time repair very easily cause bigger potential safety hazard, for example: cracks, fractures, pits, etc., which seriously affect the driving safety. There are two schemes for solving the disease: firstly, replacing a steel rail; and secondly, repairing and processing the rail surface of the steel rail to remove diseases. However, the replacement cost of a subway per kilometer is about 400 ten thousand yuan, the replacement cost of a 25 kilometer subway is about 1 hundred million, the replacement time is at least two weeks, and the operation of rail transit is seriously affected, so that the first scheme is hardly feasible, and the second scheme is often adopted. At present, the most advanced international repairing and machining equipment is the austria sine grid milling and grinding vehicle, the maximum operation speed of the equipment is 500m/h, if the feeding speed of repairing and cutting machining is further improved, a cutter can generate abnormal heating, break up the cutter and the like to damage the cutter, a subway and a high-speed rail only have a 3-5 hour maintenance window period every day, according to the speed, a single milling and grinding vehicle can repair 1.5-2.5km every day, the repairing efficiency is low, the production requirement is difficult to meet, and therefore the efficiency of steel rail repairing needs to be improved urgently.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides an online track differential circulating repair processing method, which comprises the following steps: the repairing vehicle moves forwards along the steel rail to be repaired, a plurality of repairing tools mounted on the repairing vehicle move circularly along a closed path, and the repairing tools at repairing stations move backwards to continuously, unrepeatedly and simultaneously perform repairing operation on the respective stations.

Furthermore, the repairing tools are arranged at equal intervals, the number of the repairing tools which are positioned on the repairing station and operate simultaneously is n, n is an integer not less than 2, and at least two repairing tools perform repairing operation simultaneously.

Further, the repairing vehicle moves forwards at a speed of V1, the repairing tool moves clockwise along a closed path at a speed of V2, V2 is not equal to V1, the actual feeding speed of the repairing tool on the repairing station is V0, V0 is not less than V1/n, wherein V0 is less than or equal to the maximum safe repairing speed endured by the repairing tool, and when V1 is more than V2, the repairing tool on the repairing station is repaired forwards; when V1 < V2, the repair cutter at the repair station is repaired backward.

Further, when V1 > V2, the size of V2 and V1 is preferably V2 ═ V1 (n-1)/n; when V1 < V2, the sizes of V2 and V1 are preferably V2 ═ V1(n + 1)/n.

Further, when V1 > V2, the sizes of V2 and V1 are preferably V1(n-1)/n-10 ≦ V2 < V1 (n-1)/n; when V1 < V2, the sizes of V2 and V1 are preferably V1(n +1)/n < V2 ≦ V1(n +1)/n + 10.

Further, the closed path is a waist circle, and the lower waist of the waist circle is the repair station.

Further, the repair tool is a formed milling cutter.

The invention provides an on-line track differential circulation repairing and processing method, a plurality of repairing cutters on a repairing station simultaneously move backwards in a circulation mode at a constant speed different from the advancing speed of a repairing vehicle, so that the on-line differential repairing and processing of a steel rail is realized, each repairing cutter on the repairing station independently operates on the respective station to repair the steel rail, each cutter continuously, unrepeatedly and simultaneously carries out segmented repairing operation, so that continuous, unrepeated and simultaneous repairing operation is generally formed, the repairing vehicle carries out repairing operation at the speed n times of the safe operation speed of the repairing cutters, the length of a steel rail repaired line in the same time period is far larger than that of the steel rail line repaired by the existing method and is far higher than that of the existing repairing vehicle, the track repairing operation can be rapidly finished, and the repairing efficiency is remarkably improved.

Drawings

FIG. 1 is a schematic structural diagram of an online track differential cycle repair processing device provided by the invention;

FIG. 2 is a schematic view of the drive mechanism and the repair mechanism of the present invention (the shield is not shown);

FIG. 3 is a schematic view of the drive mechanism and the repair mechanism of the present invention with the power distribution board removed;

FIG. 4 is a schematic view of the driving mechanism and the power distribution board and frame of the present invention;

FIG. 5 is a schematic view of the construction of the prosthetic device of the present invention;

wherein, 1, the main frame; 11. a guide rail; 12. a shield; 13. a first mounting plate; 14. a connecting member; 15. a distribution board; 16. a conductive slideway; 17. a second mounting plate; 18. a traveling wheel; 2. a drive mechanism; 21. a drive motor; 22. a speed reduction mechanism; 23. a sprocket shaft; 24. a drive sprocket; 25. a chain; 26. a driven sprocket; 3. a repair mechanism; 31. connecting blocks; 32. a mounting seat; 33. repairing the motor; 34. a coupling; 35. a first milling cutter; 36. a guide wheel; 37. a through electric brush; 38. a second milling cutter; 4. rail for railway vehicle

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 or similar 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.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have particular orientations, be constructed and operated in particular orientations, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can, for example, be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the present invention provides an online track differential cycle repair processing 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, the 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 a connecting block 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 a travelling wheel 18, and the main frame 1 advances forwards along the rail 4 to be repaired under the traction of a train head or a power device arranged on the main frame 1.

As shown in fig. 4, the two mounting plates 13 are connected to form an i-shaped sub-frame through a connector 14, a waist-round 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 outside the guide rail 11, a distribution board 15 is arranged outside 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 the head of the train.

The driving mechanism 2 comprises a driving motor 21, a speed reducing mechanism 22, a chain wheel shaft 23, a driving chain wheel 24, a chain 25 and a driven chain wheel 26 which are arranged on the auxiliary frame. Wherein the speed reducing mechanism 22 is constituted by a gear train having a certain reduction ratio.

The left side and the right side of the front end of the auxiliary frame are both provided with a driving chain wheel 24, the left side and the right side of the rear end of the auxiliary frame are both provided with driven chain wheels 26, the driving chain wheel 24 positioned on the left side is connected with the driven chain wheels 26 positioned on the left side through a chain 25, the driving chain wheel 24 positioned on the right side is connected with the driven chain wheels 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 shield 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 set of repairing mechanisms 3 includes a connecting block 31, a mounting seat 32, a repairing motor 33, a coupling 34, a first milling cutter 35, a guide wheel 36 and an electric brush 37, wherein the first milling cutter is used as a repairing tool for steel rail repairing operation, one end of the mounting seat 32 is fixedly mounted on a left chain through the connecting block 31, the other end of the mounting seat 32 is fixedly mounted on a right chain through another connecting block 31, the repairing motor 33 is mounted on the mounting seat 32, one end of the coupling 34 is connected with the repairing motor 33, the other end of the coupling is connected with the first milling cutter 35, and the first milling cutter 35 is also mounted on the mounting seat 32. Two rows of guide wheels 36 are fixedly mounted on the inner side surface of the connecting block 31, a through brush 37 is mounted on the outer side surface of one connecting block 31, and the through brush 37 is matched with the conductive slideway 16 so as to take power from the conductive slideway 16 to supply power to the repair motor 33. As shown in fig. 3 and 4, the shield 12 forms a sealing structure with the mounting plate 13 and the distribution board 15 to seal the over-brush 37 and the conductive slideway 16.

As shown in fig. 2, 3 and 4, the chain 25 is fixedly connected with the mounting seat 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 auxiliary frame. In addition, a second mounting plate 17 is arranged on the first mounting plate 13 and used for mounting the distribution board 15, and the electric brush 37 is 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 further 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 installed on the connecting block 31, the connecting block 31 moves along the guide rail 11 in a circulating mode under the driving of the chain 25, the section, from the first section, contacting the steel rail 4, of the milling cutter to the second section, away from the steel rail 4, serves as a repairing station, and the first milling cutter on the repairing station on the steel rail moves backwards. Theoretically, the repair operation can be carried out at n times of the safe operation speed of the repair cutter by at least simultaneously placing 2 milling cutters 35 at the repair station all the time, wherein n is the number of repair mechanisms on the repair station.

Furthermore, as shown in fig. 1, a first milling cutter of some repairing mechanisms is a rough milling cutter, a second milling cutter 38 is further arranged behind a feeding path of the first milling cutter on the same mounting seat, the second milling cutter 38 is a finish milling cutter, and the two milling cutters have different processing precision so as to finish rough processing and finish processing of track repairing; the steel rail repairing precision is improved by performing milling twice through rough milling and finish milling, the repairing vehicle completes repairing operation of two rough and finish procedures in the process of one-time walking, the operation time is saved, and the repairing precision is improved.

As shown in fig. 2 and 3, in the embodiment, there are 14 sets of repair mechanisms, and accordingly, 14 milling cutters one is provided, wherein 5 milling cutters one are always in the repair station.

In addition, the invention also provides an online track differential cycle repair processing method, which comprises the following steps: the repairing vehicle moves forwards along the steel rail to be repaired, a plurality of repairing tools (namely, a milling tool I or a milling tool I and a milling tool II) installed on the repairing vehicle circularly move along a closed path, and the repairing tools on the repairing stations move backwards to continuously, unrepeatedly and simultaneously carry out repairing operation on the respective stations.

The repairing tools are arranged at equal intervals, the number of the repairing tools which are simultaneously operated on the repairing station is n, n is an integer not less than 2, and at least two repairing tools simultaneously perform repairing operation.

The repairing vehicle moves forwards at a speed of V1, namely the repairing speed of the repairing vehicle, the repairing tool moves clockwise along a closed path at a speed of V2 (the repairing tool speed is the repairing mechanism speed), V2 ≠ V1 (if V2 is V1, the feed speed of the repairing tool is V0 | -V1-V2 | -0, and no repairing operation is performed), the actual feed speed of the repairing tool at the repairing station is V0 | -V1-V2 |, when V0 is V1/n, n is the repairing tool can be repaired by the distance of the repairing vehicle in a seamless way, when V0 > V1/n, n is the total distance of the repairing tool in the same time period which is greater than the distance moved by the repairing vehicle, the repairing tool is in an unloaded state without load or a state of repeated milling, when V0/539n is smaller than V1, in the same time period, the total n feeding distance of the repairing tool is smaller than the moving distance of the repairing vehicle, and a repairing missing state exists, wherein V0 is smaller than or equal to the maximum safe repairing speed endured by the repairing tool, so the online track differential speed cycle repairing processing method of the invention can realize the repairing speed V1 which is not less than nV0, the maximum V0 is 500m/h at present, and n is 5 in the previous embodiment, then the maximum repairing speed V1 of the repairing vehicle in the previous embodiment is 2500 m/h. In this example, the unit of velocity is m/h unless otherwise specified.

In the process of repairing and milling, one is that a repairing tool on a repairing station is repaired forwards, so that V1 is required to be larger than V2, the size relation between V2 and V1 is V2-V1 (n-1)/n, V0-500 m/h, and n-5 are taken as examples, the maximum repairing speed is V1-2500 m/h, and V2-2000 m/h. However, in order to avoid the repair omission caused by error problems such as tool wear or equipment clearance, the sizes of V2 and V1 are preferably V1(n-1)/n-10 ≦ V2 < V1(n-1)/n, the repair tool can be actively repeatedly milled or unloaded forward by a small distance, and taking V0 ═ 500m/h and n ═ 5 as examples, the maximum repair speed V1 ≦ 2500m/h and 1990m/h ≦ V2 < 2000m/h are suitable.

Secondly, when the repair tool on the repair station needs to be repaired backwards and V1 is less than V2, the sizes of V2 and V1 are preferably V2-V1 (n + 1)/n; for example, when V0 is 500m/h and n is 5, the maximum repair speed is V1 is 2500m/h and V2 is 3000 m/h. However, in order to avoid repair omission caused by error problems such as tool wear or equipment clearance, the sizes of the V2 and the V1 are preferably V1(n +1)/n < V2 ≦ V1(n +1)/n +10, and the milling is actively repeated backwards or no-load is carried out for a small distance. For example, when V0 is 500m/h and n is 5, the maximum repair speed V1 is 2500m/h, and 3000m/h is V2 < 3010m/h is preferable.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An online track differential circulation repairing and processing method is characterized by comprising the following steps: the repairing vehicle moves forwards along the steel rail to be repaired, a plurality of repairing tools installed on the repairing vehicle circularly move clockwise along a closed path, and the repairing tools on the repairing stations move backwards to continuously, unrepeatedly and simultaneously carry out repairing operation on the respective stations.

2. The on-line track differential speed cycle restoration processing method according to claim 1, wherein the restoration tools are arranged at equal intervals, the number of the restoration tools which are simultaneously operated at the restoration station is n, n is an integer not less than 2, and at least two restoration tools simultaneously perform restoration operation.

3. The on-line track differential speed cycle repair machining method as claimed in claim 2, wherein the repair vehicle moves forward at a speed of V1, the repair tool moves clockwise along the closed path at a speed of V2, V2 ≠ V1, the actual feed speed of the repair tool at the repair station is V0, V0 is greater than or equal to V1/n, wherein V0 is less than or equal to the maximum safe repair speed endured by the repair tool, and when V1 is greater than V2, the repair tool at the repair station is repaired forward; when V1 < V2, the repairing tool at the repairing station is repaired backwards.

4. The online rail differential speed cycle repair machining method as claimed in claim 3, wherein when V1 is greater than V2, the sizes of V2 and V1 are preferably V2 ═ V1 (n-1)/n; when V1 < V2, the sizes of V2 and V1 are preferably V2 ═ V1(n + 1)/n.

5. The differential-speed online track cycle repair machining method as claimed in claim 3, wherein when V1 > V2, the sizes of V2 and V1 are preferably V1(n-1)/n-10 ≦ V2 < V1 (n-1)/n; when V1 < V2, the sizes of V2 and V1 are preferably V1(n +1)/n < V2 ≦ V1(n +1)/n + 10.

6. The on-line track differential cycle restoration processing method according to claim 1, wherein the closed path is a waist circle, and the lower waist of the waist circle is the restoration station.

7. The on-line track differential cycle restoration machining method according to claim 1, wherein the restoration tool is a formed milling cutter.