Operating railway steel rail double-line replacing and laying construction method

Abstract

The invention discloses an operating railway steel rail double-line replacing and laying construction method, which relates to the technical field of railway laying, and comprises the steps of new steel rail unloading, steel rail line lower welding, steel rail replacing and laying, steel rail line upper welding and steel rail recycling. The space between the upper track line and the lower track line is used as a long steel rail temporary storage position, so that line production of all steel rail replacement and laying procedures and synchronous operation of all the procedures at different stations are achieved, alternate interference of the procedures is reduced, the construction organization difficulty is lowered, the traffic safety risk is eliminated, and the steel rail replacement and laying construction efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of railway laying, and more specifically to a construction method for replacing double-track steel rails on an operating railway. Background Art

[0002] At present, rail replacement construction on operating railways is carried out on the same line, that is, the operation of engineering trains and rail replacement operations are all carried out on one track line. The rail replacement process includes: unloading new rails 4, replacing old and new rails 7, welding new rails 4, recycling old long rails 7, stress relief and locking of new rails 4, etc., until all processes are completed and the track line meets the conditions for opening.

[0003] Each process of track replacement construction is carried out alternately on the track line of the same track replacement section. Material transportation, equipment operation, construction work, etc. are all implemented on this line. The dual-channel advantage of the double-track railway is not fully utilized. The processes of unloading new long rails, replacing long rails, rail welding, stress relief, and recycling of old long rails cannot be carried out simultaneously. In order to save working time during single-line operation, most of the line fasteners are removed in advance, and driving and construction processes are carried out alternately. It is necessary to repeatedly install and remove the line fasteners. Generally speaking, the various processes of the single-track plan are carried out step by step and are interrelated. They cannot be carried out simultaneously, resulting in low construction efficiency and high safety risks.

[0004] In summary, how to provide a double-track construction method for rail replacement is a problem that currently needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a double-track rail replacement construction method for operating railways, which can give full play to the dual-channel advantages of double-track railways, reduce the interference of alternating work processes, reduce the difficulty of construction organization, eliminate driving safety risks, and greatly improve the efficiency of rail replacement construction.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A construction method for replacing double-track rail tracks on an operating railway, comprising:

[0008] The long rail transport vehicle loaded with new rails enters the rail replacement operation section through the track of the main line, and unloads the new rails between the track of the main line and the track of the adjacent line;

[0009] The offline rail welding train passes through the track of the main line and enters the rail replacement operation section to weld the new rail between the track of the main line and the track of the adjacent line to form a unit rail;

[0010] The rail-changing train enters the rail-changing operation section through the main line track, moves the old rail of the adjacent line track to between the main line track and the adjacent line track, and moves the unit rail to the position of the adjacent line track;

[0011] The on-line rail welding train passes through the adjacent track and enters the rail replacement operation section, welds the adjacent track and the adjacent unit rail, releases the rail stress and locks the welded rail, and welds, releases the rail stress and locks the adjacent unit rails in sequence, until all the unit rails in the rail replacement operation section are welded, and the terminal unit rail is connected to the adjacent track;

[0012] The long rail transport vehicle enters the rail replacement operation section through the main line track and recycles the old rails between the main line track and the adjacent line track.

[0013] The present invention further provides that the long rail transport vehicle loaded with new rails enters the rail replacement operation section through the main line track, and unloads the new rails between the main line track and the adjacent line track, and the offline rail welding train enters the rail replacement operation section through the main line track, welds the new rails between the main line track and the adjacent line track, and forms unit rails, which can complete the operation in the same operation section or different operation sections within the same operation window time;

[0014] Or operate in different track-changing operation sections in different operating windows.

[0015] Furthermore, the present invention comprises that the track-changing train enters the track-changing operation section through the main-line track, moves the old rails of the adjacent-line track between the main-line track and the adjacent-line track, and moves the unit rails to the position of the adjacent-line track, and the online welding rail train enters the track-changing operation section through the adjacent-line track, welds the adjacent-line track and the unit rails adjacent to it, and performs rail stress release and locking on the welded rails, and welds and performs rail stress release and locking on the adjacent unit rails in turn, until the welding of all the unit rails in the track-changing operation section is completed, and the unit rails at the end are connected to the adjacent-line track, and the operation is completed in the same operation section within the same operation window time.

[0016] Furthermore, the present invention is that the long rail transport vehicle enters the rail replacement operation section through the main line track to recover the old rail between the main line track and the adjacent line track and completes the operation within the operation skylight time after all the above-mentioned processes are completed.

[0017] Furthermore, the present invention provides that the various working steps are performed sequentially along the rails to be replaced according to different working windows and different working sections, so as to form an assembly line type working method.

[0018] The present invention further provides that the on-line rail welding train enters the rail replacement operation section through the adjacent track, welds the existing rail of the adjacent track with the adjacent unit rail, releases and locks the rail stress on the welded rail, and sequentially welds and releases and locks the adjacent unit rails until all the unit rails in the rail replacement operation section are welded, and the terminal unit rail is connected to the existing rail of the adjacent track.

[0019] The “stretching method” is used to relieve stress and lock the welded unit rails.

[0020] Furthermore, the present invention provides that the offline rail welding train comprises a variety of rail welding equipment such as a mobile gas pressure welding vehicle and a mobile flash welding vehicle.

[0021] Furthermore, the on-line rail welding train includes a variety of rail welding equipment such as a mobile gas pressure welding vehicle and a box-type flash welding vehicle.

[0022] Furthermore, the present invention provides that the offline rail welding train follows the long rail transport vehicle behind the long rail transport vehicle and enters the rail changing operation section through the track of the own line at the same time, and can also enter the rail changing operation section in parallel with the long rail transport vehicle through the track of the adjacent line.

[0023] The double-track replacement construction method for rails of an operating railway provided by the present invention, when in use, firstly unloads a new rail through a long rail transport vehicle entering the track of the current line into the space between the track of the current line and the track of an adjacent line, an offline rail welding train passes the track of the current line to weld the new rail and form a unit rail, a rail replacement train passes the track of the current line and exchanges the position of the old rail of the adjacent line track with the welded unit rail, an online rail welding train welds the adjacent line track to its adjacent unit rail, performs rail stress release and locking on the welded rail, and sequentially performs welding, rail stress release and locking on adjacent unit rails. , until all the unit rails in the track replacement operation section are welded, and the end unit rails are connected to the adjacent line track. Finally, the long rail transport vehicle recycles the old rails between the track of this line and the adjacent line track. A new double-track operation method is adopted, which gives full play to the dual-channel advantages of double-track railways and uses the space between the up and down track lines as a temporary storage position for long rails, thereby realizing the flow operation of each process of rail replacement, and each process is carried out simultaneously at different workstations, reducing the interference of alternating processes, reducing the difficulty of construction organization, eliminating driving safety risks, and greatly improving the efficiency of rail replacement construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0025] Figure 1 This is a structural schematic diagram of the new rail unloading process provided by the present invention;

[0026] Figure 2 This is a structural schematic diagram of the new rail line welding process provided by the present invention;

[0027] Figure 3 This is a structural schematic diagram of the process of replacing old and new rails provided by the present invention;

[0028] Figure 4 A structural schematic diagram of the welding process on the new rail line provided by the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the old rail recycling provided by the present invention;

[0030] Figure 6 It is a structural schematic diagram of the process method sequence provided by the present invention.

[0031] Figure 1-Figure 6 , the reference numerals include:

[0032] Main line track 1, adjacent line track 2, long rail transport vehicle 3, new rail 4, unit rail 401, offline welding rail train 5, rail replacement train 6, old rail 7. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The core of the present invention is to provide a double-track rail replacement construction method for operating railways, which fully utilizes the dual-channel advantages of double-track railways, reduces interference in alternating work processes, reduces the difficulty of construction organization, eliminates driving safety risks, and greatly improves the efficiency of rail replacement construction.

[0035] Please refer to Figure 1-Figure 6 A construction method for replacing double-track rails on an operating railway, comprising:

[0036] S1) Unloading of long rails: the long rail transport vehicle 3 loaded with new rails 4 passes through the track 1 of the main line and enters the rail replacement operation section, and unloads the new rails 4 between the track 1 of the main line and the track 2 of the adjacent line;

[0037] S2) Rail offline welding: the offline rail welding train 5 passes through the track 1 of the main line and enters the rail replacement operation section to weld the new rail 4 between the track 1 of the main line and the track 2 of the adjacent line, and form a unit rail 401;

[0038] S3) Rail replacement: the rail replacement train 6 enters the rail replacement operation section through the track 1 of the main line, moves the old rail 7 of the adjacent track 2 to between the track 1 of the main line and the adjacent track 2, and moves the unit rail 401 to the position of the adjacent track 2;

[0039] S4) On-line rail welding: the on-line rail welding train 8 passes through the adjacent track 2 and enters the rail replacement operation section, welds the adjacent track 2 and the adjacent unit rail 401, releases and locks the welded rail, and welds and releases and locks the adjacent unit rails 401 in sequence, until all the unit rails 401 in the rail replacement operation section are welded, and the terminal unit rail 401 is connected to the adjacent track 2;

[0040] S5) Rail recovery: the long rail transport vehicle 3 passes through the track 1 of the main line and enters the rail replacement operation section to recover the old rail 7 between the track 1 of the main line and the track 2 of the adjacent line.

[0041] When in use, firstly, the new rail 4 is unloaded between the main line track 1 and the adjacent line track 2 through the long rail transport vehicle 3 entering the main line track 1, the offline rail welding train 5 welds the new rail 4 through the main line track 1 to form a unit rail 401, the rail exchange train 6 passes through the main line track 1 and exchanges the old rail 7 of the adjacent line track 2 with the welded unit rail 401, the online rail welding train 8 welds the adjacent line track 2 to the adjacent unit rail 401, and carries out rail stress release and locking for the welded rail, and successively welds, releases rail stress and locks the adjacent unit rails 401 until After the welding of all unit rails 401 in the track replacement operation section is completed, the terminal unit rail 401 is connected to the adjacent track 2. Finally, the long rail transport vehicle 3 recycles the old rail 7 between the track 1 of the main line and the adjacent track 2. A new double-track operation method is adopted, which gives full play to the dual-channel advantage of the double-track railway and uses the space between the uplink and downlink track lines as a temporary storage position for long rails, thereby realizing the flow operation of each process of rail replacement. Each process is carried out synchronously at different workstations, reducing the interference of alternating processes, reducing the difficulty of construction organization, eliminating driving safety risks, and greatly improving the efficiency of rail replacement construction.

[0042] It should be noted that the specific implementation scheme of the embodiment of the present invention is as follows:

[0043] 1. Unloading of new long rails:

[0044] 1. When the rear end of the long rail transport vehicle 3 reaches the rail-changing starting point, the long rail transport vehicle 3 stops here, drags the new long rail from the new rail transport vehicle 4, and uses the cross-line unit rail shifting device to shift the new long rail between the uplink and downlink tracks and align it with the rail-changing starting point;

[0045] 2. The long rail train moves forward and cooperates with the cross-line unit device to continuously pull the new long rails out of the new rail 4 transport car, completing the operation of unloading a pair of new long rails.

[0046] 2. New long rail welding:

[0047] The offline rail welding train 5 enters the rail replacement operation section, carries out offline welding of new rails, aligns the connection parts of two pairs of new rails, completes the unit welding of the new rails, and repeats this step to weld the new rails into the required unit rails 401.

[0048] 3. Rail replacement:

[0049] 1. The rail-changing train 6 enters the rail-changing operation section, the front end of the cross-line unit device is aligned with the rail-changing starting point, the train moves forward slowly, and the cross-line unit rail-pushing device pulls the old rail 7 out from the adjacent line and moves it between the track 1 of the own line and the track 2 of the adjacent line;

[0050] 2. When the rail shifting device of the cross-line unit is aligned with the unit rail 401 at the starting point of the rail change, the train moves forward slowly, so that the welded unit rail 401 is shifted from between the track 1 of the own line and the track 2 of the adjacent line and introduced into the track 2 of the adjacent line;

[0051] 3. In the same manner as described in steps 1 and 2, the task of replacing multiple pairs of unit rails 401 is completed continuously.

[0052] 4. Welding, stress relief and locking on rail lines:

[0053] 1. After the replacement of the unit rails 401 is completed, the on-line rail welding train 8 enters the adjacent track 2, welds the existing rails of the adjacent track with the first pair of unit rails 401, and performs stress release and locking;

[0054] 3. The on-line rail welding train 8 moves forward to align and weld the joints of the first and second pairs of unit rails 401;

[0055] 3. In the same manner as described in steps 1 and 2, the welding, stress relief and locking operations of multiple pairs of unit rails 401 are completed continuously.

[0056] 5. Recycling of old rails 7:

[0057] When the rear end of the long rail transport vehicle 3 reaches the rail changing starting point, the long rail transport vehicle 3 stops here, and the old long rail is moved from between the main line track 1 and the adjacent line track 2 through the cross-line unit rail shifting device, and the old long rail is shifted and sent to the long rail transport vehicle 3.

[0058] 6. Equipment withdrawal and line opening:

[0059] After each train completes its planned tasks, it begins work such as equipment preparation and restoration, site cleaning, and line inspection to ensure that the conditions for opening are met and the line is restored.

[0060] 1. Long rail train: The cross-line unit will retract and reinforce the rail puller, reinforce the long rails on the long rail transport vehicle 3, and prepare the entire train.

[0061] 2. Offline welding rail train 5: Retract the welding machine head and prepare the entire train.

[0062] 3. On-line rail welding train 8: Retract the welding machine head and prepare the entire train.

[0063] 4. Rail-changing train 6: The cross-line unit will retract and reinforce the rail-shifting device and prepare the entire train.

[0064] 5. Line inspection: Conduct a comprehensive inspection of the main line and adjacent lines in the track-changing section to ensure that the line fasteners are complete and intact and there are no safety hazards. Clean up the tools and debris on site.

[0065] 6. Personnel inventory: Count the personnel on site to ensure accuracy.

[0066] After completing various inspections and confirming that all conditions are complete and correct and the conditions for opening are met, the engineering train will exit the site as planned and the line will be reopened.

[0067] Optionally, in some embodiments, a long rail transport vehicle 3 equipped with new rails 4 enters the track changing section through the main line track 1, and the new rails 4 are unloaded between the main line track 1 and the adjacent line track 2. An offline rail welding train 5 enters the track changing section through the main line track 1, and welds the new rails 4 between the main line track 1 and the adjacent line track 2 to form a unit rail 401. The operation can be completed in the same operation section or different operation sections within the same operation window time, or in different track changing operation sections in different operation windows.

[0068] The railway maintenance operation window refers to the time reserved for the maintenance of railway lines, communication signals, traction power supply and other facilities and equipment without laying out train lines or adjusting or reducing train lines in the train operation diagram. During this time period, no trains will run on the line, and workers can safely carry out repair and maintenance work. The maintenance window is a very important part of railway maintenance work. It ensures that railway facilities can be maintained in a timely and safe manner. Therefore, the unloading of the new rail 4 and the welding of the new rail 4, that is, steps S1 and S2, only need to select the operation window time according to their respective normal work efficiency.

[0069] Optionally, in some embodiments, the track-changing train 6 enters the track-changing operation section through the main line track 1, moves the old rail 7 of the adjacent line track 2 between the main line track 1 and the adjacent line track 2, and moves the unit rail 401 to the position of the adjacent line track 2. The online welding rail train 8 passes through the track-changing operation section of the adjacent line track 2, welds the adjacent line track 2 and the adjacent unit rail 401, releases and locks the rail stress on the welded rail, and welds and releases and locks the adjacent unit rails 401 in turn until the track-changing operation section is completed, that is, all the unit rails 401 replaced in the skylight plan are welded, and the terminal unit rail 401 is connected to the adjacent line track 2. The operation is completed in the same operation section within the same operation skylight time, and the replacement of rails and online welding are completed in the same operation section within the same operation time period. The purpose is to ensure the normal opening and operation of the railway line, which is conducive to making full use of the operation skylight time and improving efficiency.

[0070] Optionally, in some embodiments, the long rail transport vehicle 3 enters the track changing operation section through the main line track 1 to recycle the old rail 7 between the main line track 1 and the adjacent line track 2 within the operation window time after all the aforementioned processes are completed, and each process is carried out in sequence along the rail to be replaced according to different operation windows and different operation sections to form an assembly line operation mode and realize assembly line rail changing operation, thereby greatly improving the operation efficiency.

[0071] In the above embodiment, the relationship between the operation efficiency of each process and the operation window time is as follows:

[0072] Based on the calculation of 6 hours of operation time for each skylight, 12km long rails per long rail train, and conventional operation efficiency, the completion status of each process is shown in the following table:

[0073] Skylight Process No. 1 Skylight No. 2 Skylight No. 3 Skylight No. 4 Skylight Long rail unloading 6km 6km / / Rail Underground Welding 3km 4.5km 4.5km / Stress relief and locking of rail line welding during rail replacement / 4.5km 4.5km 3km Recycling old rails / / 6km 6km

[0074] Assuming that every 3km is divided into sections as a workstation, the temporal and spatial relationship between the working window time and the workstation is as follows:

[0075] Skylight station First day window Second window The third skylight Fourth Skylight First station Under-line welding of long rails for unloading Stress relief and locking of rail line welding during rail replacement Rail recycling / Second workstation Long rail unloading Rail welding under rail line, rail replacement, rail welding stress release and locking Stress relief and locking of rail line welding during rail replacement / The third station / Under-line welding of long rails for unloading Rail welding under rail line, rail replacement, rail welding stress release and locking Rail recycling The fourth station / Long rail unloading Rail Underground Welding Rail replacement and rail line welding stress relief and locked rail recovery

[0076] Each process is carried out at different workstations during different window times, forming an assembly line operation, reducing cross-interference and greatly improving the efficiency of rail replacement operations.

[0077] Optionally, in some embodiments, the offline rail welding train 5 follows the long rail transport vehicle 3 behind the long rail transport vehicle 3 and simultaneously passes through the main line track 1 to enter the rail changing operation section, making full use of the window operation time and simultaneously carrying out the new long rail unloading and offline welding processes, which is conducive to improving the overall efficiency.

[0078] Optionally, in some embodiments, in S4, a “stretching method” is used to release stress and lock the welded unit rail 401 .

[0079] Optionally, in some embodiments, the offline rail welding train includes various rail welding equipment such as a mobile pneumatic welding vehicle and a mobile flash welding vehicle.

[0080] Optionally, in some embodiments, the online rail welding train includes various rail welding equipment such as a mobile gas pressure welding vehicle and a box-type flash welding vehicle.

[0081] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0082] The above is a detailed introduction to a construction method for replacing double-track rails on an operating railway provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A construction method for replacing double-track rails on an operating railway, characterized in that: include: A long rail transport vehicle (3) loaded with new rails (4) is driven through the track (1) of the main line into the rail replacement operation section, and the new rails (4) are unloaded between the track (1) of the main line and the track (2) of the adjacent line; An offline rail welding train (5) passes through the main line track (1) and enters the rail replacement operation section to weld the new steel rail (4) between the main line track (1) and the adjacent line track (2) to form a unit steel rail (401); The track-changing train (6) enters the track-changing operation section through the main track (1), moves the old rail (7) of the adjacent track (2) to between the main track (1) and the adjacent track (2), and moves the unit rail (401) to the position of the adjacent track (2); The on-line rail welding train (8) passes through the adjacent track (2) and enters the track replacement operation section, welds the adjacent track (2) and the adjacent unit rail (401), releases and locks the welded rail, and sequentially welds, releases and locks the adjacent unit rails (401), until all the unit rails (401) in the track replacement operation section are welded, and the terminal unit rail (401) is connected to the adjacent track (2); The long rail transport vehicle (3) passes through the main line track (1) and enters the rail replacement operation section to recycle the old rail (7) between the main line track (1) and the adjacent line track (2).

2. A double-track replacement construction method for operating railway rails according to claim 1, characterized in that: The long rail transport vehicle (3) loaded with new rails (4) enters the rail replacement operation section through the main line track (1), and unloads the new rails (4) between the main line track (1) and the adjacent line track (2); the offline rail welding train (5) passes through the main line track (1) and enters the rail replacement operation section, welds the new rails (4) between the main line track (1) and the adjacent line track (2), and forms a unit rail (401). The operation can be completed in the same operation section or in different operation sections within the same operation window time; Or operate in different track-changing operation sections in different operating windows.

3. A double-track replacement construction method for operating railway rails according to claim 2, characterized in that: The track-changing train (6) enters the track-changing operation section through the main track (1), moves the old rail (7) of the adjacent track (2) between the main track (1) and the adjacent track (2), and moves the unit rail (401) to the position of the adjacent track (2); the online rail welding train (8) enters the track-changing operation section through the adjacent track (2), welds the adjacent track (2) and the unit rail (401) adjacent to it, releases and locks the welded rails, and welds, releases and locks the adjacent unit rails (401) in sequence, until all the unit rails (401) in the track-changing operation section are welded, and the unit rail (401) at the end is connected to the adjacent track (2) in the same operation section within the same operation window time to complete the operation.

4. A double-track replacement construction method for operating railway rails according to claim 3, characterized in that: The long rail transport vehicle (3) passes through the main line track (1) and enters the rail replacement operation section to recycle the old rail (7) between the main line track (1) and the adjacent line track (2) and complete the operation within the operation window time after all the above-mentioned processes are completed.

5. A double-track replacement construction method for operating railway rails according to claim 4, characterized in that: The various working procedures are carried out sequentially along the rails to be replaced according to different working windows and different working sections, so as to form an assembly line type working mode.

6. A double-track rail replacement construction method for an operating railway according to any one of claims 1 to 4, characterized in that: The on-line rail welding train (8) enters the rail replacement operation section through the adjacent track (2), welds the existing rail of the adjacent track (2) with the adjacent unit rail (401), releases and locks the welded rail, and sequentially welds and releases and locks the adjacent unit rails (401) until all the unit rails (401) in the rail replacement operation section are welded, and the terminal unit rail (401) is welded with the existing rail of the adjacent track (2); The "stretching method" is used to release stress and lock the welded unit rail (401).

7. A double-track rail replacement construction method for an operating railway according to any one of claims 1 to 4, characterized in that: The offline rail welding train includes a variety of rail welding equipment such as a mobile gas pressure welding vehicle and a mobile flash welding vehicle.

8. A double-track rail replacement construction method for an operating railway according to any one of claims 1 to 4, characterized in that: The online rail welding train includes a variety of rail welding equipment such as a mobile gas pressure welding vehicle and a box-type flash welding vehicle.

9. A double-track rail replacement construction method for an operating railway according to any one of claims 1 to 4, characterized in that: The offline welding rail train (5) follows the long rail transport vehicle (3) behind the long rail transport vehicle (3) and simultaneously passes through the main line track (1) to enter the rail replacement operation section. The offline welding rail train (5) can also pass through the adjacent line track (2) in parallel with the long rail transport vehicle (3) to enter the rail replacement operation section.

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