A non-vehicle-mounted integrated rail replacement construction method

Abstract

The application discloses a non-vehicle-mounted welding and rail-changing integrated construction method, which realizes the integrated construction mode of unloading rails, welding rails, changing rails and collecting rails on the same day in a 335-minute blockage time in a 175mm super-high superimposed 25‰ ramp section by using existing mobile rail welding equipment, can achieve the purposes of completing work and clearing materials, and can also meet the requirements of completing the construction of two pairs of new rails in a day window without using aluminum heat welding, and reduces the interference on transportation and the capital investment.

Description

Technical Field

[0001] This application belongs to the field of track replacement construction technology, specifically involving a non-vehicle-mounted welding integrated track replacement construction method. Background Technology

[0002] The current rail replacement construction organization mode involves unloading the long rails to be replaced into the outer ballast shoulder or track core using a T11 long rail transport vehicle in advance, and reinforcing them with anti-expansion rods. The day before replacement, a line welding operation is used to weld the previously unloaded unit rails into long rails exceeding 1 kilometer, which are then reinforced with anti-expansion rods. On the day of replacement, after the old rails are removed from the track, they are cut into approximately 500-meter sections and placed back into the outer ballast shoulder or track core, reinforced with anti-expansion rods until collection. Depending on the construction schedule, the T11 long rail transport vehicle is used, or the rails are cut again into 25-meter short rails, which are then retrieved using a rail collection device. However, the biggest problem with this construction organization is the safety hazard of long rails being placed in the outer ballast shoulder or track core for extended periods.

[0003] While existing integrated rail replacement methods can achieve complete rail replacement within a single track maintenance window by adding onboard welding equipment to long-rail trains, ensuring a clean and tidy work site, the addition of welding equipment also extends the pure rail replacement operation time, prolongs track closure time, and causes greater disruption to transportation. Furthermore, existing integrated rail replacement methods not only require the purchase of new equipment but also reduce the utilization rate of existing mobile rail welding equipment, resulting in poor economic efficiency. Therefore, exploring and innovating methods to achieve complete rail replacement within a single track maintenance window while utilizing existing mobile welding equipment is necessary. Summary of the Invention

[0004] The purpose of this application is to provide a non-vehicle-mounted integrated rail replacement construction method, which realizes the integrated construction mode of unloading, welding, replacing and collecting rails on a 175mm superelevation and 25‰ slope section within a 335-minute closure time using existing mobile rail welding equipment. This method can achieve the goal of cleaning up materials and personnel after the work is completed, and can also complete the replacement, welding and collection of two pairs of new steel rails within one closure time without the use of aluminothermic welding, thereby reducing interference with transportation and capital investment.

[0005] The objective of this application is achieved through the following technical solution:

[0006] A non-vehicle-mounted integrated rail replacement construction method, characterized by comprising the following steps:

[0007] Step 1: The first train set enters the rail replacement section. The first train set includes the first locomotive, the long rail car and the second locomotive connected in sequence from front to back. At the starting point, the long rail car and the second locomotive separate, and the first locomotive pulls the long rail car to carry out the first pair of new rail unloading operations.

[0008] Step 2: After the first pair of new rails has completely landed, proceed with the unloading of the second pair of new rails;

[0009] Step 3: After the second pair of new rails has completely landed, the second locomotive moves forward and couples with the long rail car, and the first train set leaves the rail replacement section.

[0010] Step 4: While performing Step 3, the second train set enters the rail replacement section. The second train set includes the third locomotive, the rail welding machine, the rail welding car, the fourth locomotive, the rail collection car, the high-power rail car, the fifth locomotive, the auxiliary car, and the sixth locomotive, which are connected in sequence from front to back. Before the starting point of the rail replacement section, the rail welding car separates from the rail welding machine and the fourth locomotive. The third locomotive pulls the rail welding machine to the first and second pairs of new rails to prepare for welding operations. The rail welding car then moves to the starting point on its own.

[0011] Step 5: While performing Step 4, the workers prepare the first and second pairs of new rails for welding.

[0012] Step 6: The welding and straightening integrated machine performs offline long rail welding operations, welding the first pair and the second pair of new rails into a single rail. After the operation is completed, the third locomotive pulls the welding and straightening integrated machine to the end point of the slab, and simultaneously carries out pre-welding preparation work at the end point of the slab.

[0013] Step 7: While performing Step 6, start changing the rail at the starting point of the welding machine. Stop changing the rail at the working position of the welding machine and wait for the welding machine to finish its work before continuing to change the rail.

[0014] Step 8: While performing Step 7, the rail welding vehicle enters the starting point of the sluice gate to carry out pre-welding preparations and simultaneously perform old rail cutting operations.

[0015] Step 9: The rail welding vehicle performs online welding operations on the new and old rails at the starting point.

[0016] Step 10: After the welding and rail replacement work at the starting point is completed, the rail welding vehicle leaves the starting point, the rail is stretched and released, and the line is locked after leaving the distance to the free end of the new rail at the ending point.

[0017] Step 11: Perform preparatory work for the welding of the stop point;

[0018] Step 12: The welding machine performs online welding operations on the old and new rails at the end point of the weld.

[0019] Step 13: While performing steps 11 and 12, the rail welding vehicle moves to the end point of the rail welding line and waits. The high-power railcar separates from the fifth locomotive, and the fourth locomotive pulls the rail collection train to carry out the rail collection operation.

[0020] Step 14: After the welding operation at the end point of the weld is completed, the welding machine is coupled to the rail welding vehicle, and the third locomotive pulls the welding machine and the rail welding vehicle forward.

[0021] Step 15: While performing steps 13 and 14, the fifth locomotive pulls the auxiliary car group to carry out material collection operations;

[0022] Step 16: After the old rails and materials have been recycled, the second train sets are coupled together and leave the track replacement section.

[0023] Furthermore, in step 5, the pre-welding preparation work includes cutting, grinding, rust removal, support, and alignment of the first and second pairs of new rails.

[0024] Furthermore, in step 6, the pre-welding preparation work includes removing the rail fastener bolts in the old rail support area, installing the gauge tie rod, supporting the rail, and performing rust removal and grinding operations.

[0025] Furthermore, in step 9, the rail welding vehicle includes a bicycle body, a crane, a rail welding supply unit, a rail welding machine body, an extension pipeline, and a machine body support. The machine body support is erected on the track bed. The crane on the bicycle body lifts the rail welding machine body from the vehicle onto the machine body support. Then, the bicycle body drives out of the track pad area. Through the extension pipeline, the rail welding supply unit on the bicycle body supplies power, air, liquid, and oil to the rail welding machine body. The rail welding machine body performs online welding operations on the new and old rails at the starting point.

[0026] Furthermore, in step 9, the machine body support is stabilized on the track bed by the support components.

[0027] Furthermore, in step 9, the support assembly is located below the machine body support, and the lower-positioned steel rails provide support to the machine body support through the support assembly.

[0028] Furthermore, in step 9, the support assembly is located above the machine body support, and the high-level track bed exerts a counter-pull effect on the machine body support through the support assembly.

[0029] Furthermore, in step 11, the pre-welding preparation work includes bending, cutting, grinding, rust removal and support operations of the guide rail.

[0030] Furthermore, in step 13, the rail-mounting vehicle group includes a first rail-mounting device, a boxcar, and a second rail-mounting device connected sequentially from front to back.

[0031] Furthermore, in step 15, the auxiliary vehicle group includes a road flatcar, a first bus, a second bus, a third bus, and a fourth bus connected sequentially from front to back.

[0032] The beneficial effects of this application are:

[0033] (1) It can complete all the work procedures of unloading, welding, replacing and collecting rails in one go during the 335-minute closure time of the railway line overhaul and rail replacement construction, on the 175mm superelevation and 25‰ slope section.

[0034] (2) It eliminates the safety hazards of long rails being placed on the outer ballast shoulder or inside the track core for a long time.

[0035] (3) For the first time, aluminothermic welding was completely eliminated in the major overhaul and track replacement construction of a 175mm ultra-high superimposed 25‰ slope section.

[0036] (4) It further improved the efficiency of major overhaul and track replacement construction, and incorporated the construction that originally required multiple skylights into one skylight, greatly reducing the interference with transportation.

[0037] (5) A small amount of capital investment has achieved the same effect as the existing vehicle-mounted welding integrated construction method. While eliminating the need to purchase vehicle-mounted welding equipment, it has also greatly improved the utilization rate of the existing YHGQ-1200 pneumatic rail welding vehicle and YHGR-1200 integrated welding machine.

[0038] The aforementioned main solution and its various further alternatives can be freely combined to form multiple solutions, all of which are solutions that can be adopted and are claimed in this application; furthermore, the (non-conflicting alternatives) can also be freely combined with each other and with other alternatives. Those skilled in the art, after understanding the solution of this application, will realize from the prior art and common general knowledge that there are many combinations, all of which are technical solutions to be protected by this application, and will not be exhaustively listed here. Attached Figure Description

[0039] Figure 1 This is a flowchart illustrating the workflow of this application.

[0040] Figure 2 This is a schematic diagram of the first train formation in this application.

[0041] Figure 3 This is a schematic diagram of the second train formation in this application.

[0042] Figure 4 This is a schematic diagram of the detachable welding operation structure of the rail welding vehicle in this application.

[0043] Figure 5 This is a schematic diagram of the detachable welding operation of the rail welding vehicle in this application.

[0044] Figure 6 This is a schematic diagram of the welding operation at the end point of this application.

[0045] Figure 7 This is a schematic diagram of the support rail for the welding operation at the end point of this application.

[0046] In the diagram: 10 - First train set, 11 - First locomotive, 12 - Long rail car, 13 - Second locomotive.

[0047] 20 - Second train set, 21 - Third locomotive, 22 - Integrated welding machine, 23 - Rail welding vehicle, 24 - Fourth locomotive, 25 - Rail collection vehicle set, 26 - High-power railcar, 27 - Fifth locomotive, 28 - Auxiliary vehicle set, 29 - Sixth locomotive.

[0048] 231-Bicycle body, 232-Crane, 233-Rail welding supply unit, 234-Rail welding machine body, 235-Extension pipeline, 236-Machine body bracket, 237-Support component.

[0049] 251 - First rail-gathering device, 252 - Boxcar, 253 - Second rail-gathering device.

[0050] 281 - Flatbed car for road use, 282 - First passenger car, 283 - Second passenger car, 284 - Third passenger car, 285 - Fourth passenger car. Detailed Implementation

[0051] The following non-limiting embodiments are used to illustrate this application.

[0052] Example 1:

[0053] refer to Figures 1 to 7 As shown, a non-vehicle-mounted integrated rail replacement construction method includes a first train 10 and a second train 20.

[0054] The first train set 10 includes, from front to back, a first locomotive 11, a long rail car 12 (T11 long rail car), and a second locomotive 13. The second train set includes, from front to back, a third locomotive 21, a rail welding machine 22 (YHGR-1200 type rail welding machine), a rail welding car 23 (YHGQ-1200 type pneumatic rail welding car), a fourth locomotive 24, a rail-collecting car set 25, a high-power rail car 26, a fifth locomotive 27, an auxiliary car set 28, and a sixth locomotive 29.

[0055] The construction method specifically includes the following steps:

[0056] Step 1: After the construction section is closed, the first train set enters the track replacement section. At the starting point, the long rail car separates from the second locomotive. The second locomotive leaves the track unloading area, and the first locomotive pulls the long rail car to carry out the first pair of new rail unloading operations. The second locomotive remains on standby.

[0057] Step 2: After the first pair of new rails has completely landed, the first locomotive stops in place and waits for the ground staff to prepare for the unloading of the second pair of new rails before continuing to unload the second pair of new rails.

[0058] Step 3: After the second pair of new rails is completely landed, the second locomotive moves forward through the rail unloading operation area and is coupled with the long rail car. The first train set leaves the rail replacement section and enters the station ahead as a group. According to the construction supervisor and the operation plan, it returns to the parking station from the adjacent line in due course.

[0059] Step 4: While performing Step 3, the second train set enters the rail replacement section and stops about 500 meters away from the starting point of the rail replacement section. The rail welding car separates from the rail welding machine and the fourth locomotive.

[0060] The third locomotive pulls the YHGR-1200 integrated welding and straightening machine to the first and second pairs of new rail overlap to prepare for welding operations. The rail welding vehicle (YHGQ-1200 pneumatic rail welding vehicle) moves to the outer side of the starting point and waits. The remaining train sets wait in place.

[0061] Step 5: While performing Step 4, the operators will carry out pre-welding preparation work for the first and second pairs of new rails. The pre-welding preparation work includes cutting, grinding, rust removal, support and alignment of the first and second pairs of new rails.

[0062] Step 6: After the integrated welding machine is in place, the offline long rail welding operation will be carried out to weld the first and second pairs of new rails into one pair. After the operation is completed, the third locomotive will tow the integrated welding machine to the outside of the end point slab and wait. Simultaneously, pre-welding preparation work will be carried out at the end point slab, including removing the rail fastener bolts in the old rail support area, installing the gauge tie rod, supporting the rails, and performing rust removal and grinding operations.

[0063] Step 7: While performing Step 6, start manual rail replacement at the starting point of the welding machine. Stop when the rail is at the location of the welding machine, about 200 meters away from the welding machine, and wait for the welding machine to finish its work before continuing manual rail replacement.

[0064] Step 8: While performing Step 7, when the manual rail replacement is about 100 meters away from the starting point, the rail welding vehicle enters the starting point to carry out pre-welding preparations. Simultaneously, the old rail dismantling team enters the site to perform old rail cutting operations, cutting the replaced old rails into 24.5-meter short rails.

[0065] Step 9: The rail welding vehicle performs online welding operations on the new and old rails at the starting point.

[0066] The rail welding vehicle 23 includes a bicycle body 231, a crane 232, a rail welding supply unit 233, a rail welding machine body 234, an extension pipeline 235, a machine body support 236, and a support assembly 237.

[0067] A support frame is erected on the track bed. A crane on the bicycle lifts the rail welding machine onto the support frame. Then, the bicycle moves out of the track pad area. Through the extended pipeline, the rail welding supply unit on the bicycle provides power, air, liquid and oil to the rail welding machine. The rail welding machine then performs online welding operations on the new and old rails at the starting point.

[0068] The support frame is secured to the track bed using support components. The support components are located below the support frame, with the lower rails providing upward support to the support frame. Alternatively, the support components are located above the support frame, with the higher track bed providing counter-tension to the support frame.

[0069] This solution is not limited by the height and slope of online rail welding operations and can be applied to various working environments.

[0070] Step 10: After the welding and rail replacement work at the starting point is completed, the rail welding vehicle exits the starting point, the rail is stretched and released, and the distance to the free end of the new rail at the ending point is reserved before locking the line.

[0071] Step 11: Perform pre-welding preparation work for the stop point joint. Pre-welding preparation work includes bending, cutting, grinding, rust removal and support operations of the guide rail, in preparation for flash welding on the stop point joint line.

[0072] Step 12: The third locomotive pushes the welding and straightening integrated machine at a speed not exceeding 2km / h, and accurately aligns it to the welding operation point by climbing the slope. The welding and straightening integrated machine performs online welding operations on the new and old rails at the end point of the slab, and implements online flash welding operations.

[0073] Step 13: While performing steps 11 and 12, the rail welding vehicle moves to the outside of the online welding locking area at the end point of the weld line and waits.

[0074] The high-power railcar separates from the fifth locomotive, and the fourth locomotive pulls the rail-retrieval train set for rail-retrieval operations. The rail-retrieval train set 25 includes a first rail-retrieval device 251, a boxcar 252, and a second rail-retrieval device 253 connected sequentially from front to back. The boxcar is positioned in the middle to ensure that both rail-retrieval devices can operate simultaneously during a single stop.

[0075] Step 14: After the welding operation at the end point of the slab is completed, the welding machine is connected to the rail welding vehicle. The third locomotive pulls the welding machine and the rail welding vehicle forward for 2 kilometers to make room for the subsequent short rail and old material recycling.

[0076] Step 15: While performing steps 13 and 14, the fifth locomotive pulls the auxiliary car unit to carry out the material collection operation. The auxiliary car unit 28 includes a road flatcar 281, a first passenger car 282, a second passenger car 283, a third passenger car 284, and a fourth passenger car 285 connected in sequence from front to back. The fifth locomotive pulls the auxiliary car unit slowly, always maintaining a sufficient safe distance from the short rail recovery vehicle in front.

[0077] Step 16: After the old rails and materials have been recycled, the second train sets are coupled together, leave the rail replacement section, restore the original train sets, and return to the station.

[0078] This construction method mainly includes four functional parts: rail unloading, rail replacement, rail welding, and rail collection. Each functional part will be briefly described below:

[0079] 1. Unloading the rails.

[0080] (I) Rail unloading operation process and control plan.

[0081] 1. Calculate the number of T11 long rail transport vehicles to tighten handbrakes for rail unloading operations based on the slope and track conditions of the day, prepare an operation plan, and specify the vehicle number to be tightened, the implementer, and the inspector to ensure that the T11 long rail transport vehicle has a stable speed when unloading rails on the slope and prevent the impact of braking force on the rail unloading operation. Through repeated verification, it is appropriate to control the rail unloading speed within the range of 3-5 km / h.

[0082] 2. To prevent the risk of long rails slipping into the ballastless track drainage ditch during unloading, a 110×110×500mm support timber and specially made U-shaped threaded steel bars are placed every 8 meters in the unloading area for protection. This solution also effectively protects the concrete track bed and electrical auxiliary equipment from damage, and facilitates rail-splitting operations between new and old track groups, improving the efficiency of rail-splitting operations.

[0083] 3. The new rails are fixed with double clamps at the starting point of the unloading process to prevent the long rail car from dragging the rails when it starts running, thus effectively improving the timeliness and safety of unloading.

[0084] 4. When transporting rails, wrap the ends of the new rails with rubber to prevent damage to the track bed during the transport process.

[0085] 5. During the rail unloading process, two people on the ground use hooks to fix the rails as they move with the vehicle, control the lateral distance between the old and new rails, and ensure that the new rails are placed on the square timber after unloading.

[0086] (II) Introduction to the structure, location and function of the mechanical equipment used for unloading rails.

[0087] The unloading operation of long rails mainly uses the T11 long rail transport car. This car is powered by a 500kW generator set, which is installed in the equipment power room to power the rail conveying machine, winch, and other equipment. The rail conveying machine is driven by a hydraulic motor, with its drive wheel closely attached to the bottom of the rail. It is responsible for transporting long rails to the unloading trough and providing power for the initial grounding of the long rails. It is installed in the middle of the rear work car, with two machines arranged symmetrically, and can transport two rails simultaneously. The winch is driven by an electric motor and uses a steel wire rope to lower or retract the work trolley into the T11 long rail transport car, located at the rear of the work car.

[0088] II. Welding rails.

[0089] (I) YHGQ-1200 type pneumatic welding rail vehicle separate starting point line welding.

[0090] 1. Welding operation process and control scheme at the starting point of the welding line.

[0091] (1) Remove the rail fastener bolts at both ends of the weld, support the rails, and perform pre-weld rust removal and grinding. (2) Restore the rail space bolts that have been removed on the bicycle body of the rail welding vehicle according to the interval of three days to ensure driving safety. Simultaneously adjust the free end rail to open the bend, support the rails, and prepare for welding. (3) Personnel leave the track, and the bicycle body of the rail welding vehicle is precisely aligned to the rail welding operation location. (4) Install the special machine body support for the rail welding machine, lower the rail welding machine body and place it on the special machine body support, and disassemble the rail welding machine body from the crane chain to separate it. (5) Retrieve the crane, personnel leave the track, and the bicycle body exits the area where the stationary end supports the rails. (6) Use the extension pipeline to connect the rail welding machine body and the rail welding supply unit on the bicycle body. (7) Normal rail welding operation. (8) Remove the extension pipeline, support the rails below, and restore the stationary end fastener bolts by tightening them every three days. (9) Personnel leave the track, and the bicycle body is precisely aligned again. (10) Install the lifting chain, connect the rail welding machine body, and retrieve the pipeline. (11) Retrieve the crane, dismantle the special machine body support, and retrieve the working tools. (12) The rail welding vehicle leaves the rail welding work area.

[0092] 2. Description of the structure, location, and function of the mechanical equipment used.

[0093] The YHGQ-1200 pneumatic rail welding vehicle is a large-scale integrated track maintenance machine that combines self-propelled operation and welding work on railway lines. It is powered by a Deutz inline 12-cylinder air-cooled engine. The running gear consists of two sets of high-speed bogies with an H-shaped structure. The front bogie has two powered wheelsets, and the rear bogie has two unpowered wheelsets. The powered wheelsets are driven by hydraulic motors suspended on the bogies. The hydraulic motors are connected to a hydraulic pump via pipelines. The hydraulic pump is mounted in a transfer case, which is connected to the engine via a coupling, completing the hydrostatic drive running circuit. Another core component of the YHGQ-1200 pneumatic rail welding vehicle is the GPW-1200 pneumatic welding machine. This machine also uses an engine as its power source, obtaining power through a hydraulic pump mounted in the transfer case. The YHGQ-1200 gas pressure welding rail vehicle is equipped with a double-arm crane at the front. The welding machine is connected to the crane via a lifting chain, and precise positioning of the welding machine can be achieved by operating the crane. The actions of all actuators and gas flow control of the GPW-1200 gas pressure welding machine are controlled by a central control computer, which sends execution signals through a PLC to achieve full automation of the welding operation.

[0094] (II) YHGR-1200 type integrated flash welding machine climbing method stop point line welding.

[0095] 1. Welding process and control scheme for the stop point weld line.

[0096] (1) Remove the fastener bolts of the rails at both ends of the weld, support the rails, and perform pre-weld rust removal and grinding. (2) Place the rail bottom pad at the upper stop point of the road flatcar's travel path, tighten the safety bolts; install the gauge pull cylinder, and verify the track gauge. (3) Synchronously adjust the free end rails to open the bend, support the rails, and prepare for welding. (4) Personnel leave the track, install the iron shoe at the weld end, and precisely align the road flatcar to the rail welding work site. (5) The welding machine below begins normal welding operations. (6) After welding is completed, retrieve the welding machine, and the road flatcar withdraws from the rail welding work surface.

[0097] 2. Description of the structure, location, and function of the mechanical equipment used.

[0098] The YHGQ-1200 integrated welding flash welding machine is a containerized design, mounted on a road flatcar for operation, and has no power of its own. All components are housed within the container, which consists of two containers. The power compartment container mainly contains a 450kW Volvo generator set and an air dryer, while the work compartment container contains a YHGQ-1200 integrated welding flash welding machine, a crane, a chiller, a hydraulic pump station, an autotransformer, etc. The generator set provides power to the equipment, and the autotransformer matches the current and voltage required for welding operations. The air dryer primarily filters moisture from the compressed air to prevent corrosion of pipes and components. The hydraulic pump station provides power to the various hydraulic actuators of the welding machine and is centrally controlled by the welding machine's computer, achieving full automation of the welding operation.

[0099] 3. Changing the track.

[0100] (I) Work process and control plan.

[0101] The manual rail replacement method is adopted, with two rail-prying teams, each with 10 people, under unified command, using crowbars to manually remove the old rails and install the new rails.

[0102] IV. Track closing.

[0103] (I) Work process and control plan.

[0104] The old rails that fell into the road that day were cut into 24.5-meter short rails using gas cutting, and then recycled using the LSD-I rail collection device. To improve the efficiency of the rail collection operation, an organizational mode was adopted in which two sets of rail collection devices were simultaneously pulled and operated synchronously.

[0105] (ii) Description of the structure, location and function of the mechanical equipment used.

[0106] The main crossbeam of the cantilever steel frame of the LSD-I type rail-mounting device is welded from a box girder and powered by a Cummins 30kW generator set. The winch is driven by an electric motor, and the wire rope is arranged along the cantilever steel frame. The load on the winch is reduced through a pulley system to achieve the lifting and lowering function of the load. Hydraulic cylinders are installed on the cantilever steel frame, which can provide lateral force to move the upper sliding part of the cantilever steel frame laterally, realizing the horizontal lateral movement of the load.

[0107] The foregoing basic examples and their further alternative examples can be freely combined to form multiple embodiments, all of which are embodiments that can be adopted and claimed in this application. In the scheme of this application, each alternative example can be arbitrarily combined with any other basic example and alternative example.

[0108] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A non-vehicle-mounted welding integrated rail replacement construction method, characterized in that, The method comprises the following steps: Step 1: a first train enters a rail-changing section, the first train comprising a first locomotive, a long rail car and a second locomotive connected in sequence from front to back, at a starting portal, the long rail car is separated from the second locomotive, and the first locomotive pulls the long rail car to perform a first new rail unloading operation; Step 2: after the first new rail is completely landed, a second new rail unloading operation is performed; Step 3: after the second new rail is completely landed, the second locomotive is connected with the long rail car, and the first train exits the rail-changing section; Step 4: while the step 3 is being performed, a second train enters the rail-changing section, the second train comprising a third locomotive, a welding and straightening integrated machine, a rail welding car, a fourth locomotive, a rail collecting car group, a high-power rail car, a fifth locomotive, an auxiliary car group and a sixth locomotive connected in sequence from front to back, before a starting portal of the rail-changing section, the rail welding car is separated from the welding and straightening integrated machine and the fourth locomotive, the third locomotive pulls the welding and straightening integrated machine to a joint of the first and second new rails to prepare for a welding operation, and the rail welding car is moved to the starting portal; Step 5: while the step 4 is being performed, an operator performs a pre-welding preparation work on the first and second new rails; Step 6: the welding and straightening integrated machine performs a long rail welding operation off-line to weld the first and second new rails into a pair of rails, after the operation is completed, the third locomotive pulls the welding and straightening integrated machine to a stopping portal, and a pre-welding preparation work at the stopping portal is simultaneously performed; Step 7: while the step 6 is being performed, the rail-changing starts at the starting portal, and stops at a position of the welding and straightening integrated machine, waits for the operation of the welding and straightening integrated machine to be completed, and continues the rail-changing; Step 8: while the step 7 is being performed, the rail welding car enters the starting portal to perform a pre-welding preparation work and a cutting operation of old rails simultaneously; Step 9: the rail welding car performs an on-line welding operation on the new and old rails at the starting portal; Step 10: after the on-line welding operation and the rail-changing operation at the starting portal are completed, the rail welding car exits the starting portal, performs a rail stretching and spreading operation, and locks the track after a free end distance of new rails at the stopping portal is reserved; Step 11: a pre-welding preparation work at the stopping portal is performed; Step 12: the welding and straightening integrated machine performs an on-line welding operation on the new and old rails at the stopping portal; Step 13: while the steps 11 and 12 are being performed, the rail welding car is moved to the stopping portal to wait, the high-power rail car is separated from the fifth locomotive, and the fourth locomotive pulls the rail collecting car group to perform a rail collecting operation; Step 14: after the welding operation at the stopping portal is completed, the welding and straightening integrated machine is connected with the rail welding car, and the third locomotive pulls the welding and straightening integrated machine and the rail welding car to move forward; Step 15: while the steps 13 and 14 are being performed, the fifth locomotive pulls the auxiliary car group to perform a material collecting operation; Step 16: after the old rails and old materials are collected, the second train is connected with each other, and exits the rail-changing section. The welding rail vehicle includes a bicycle body, a crane, a welding rail supply unit, a welding rail machine body, an extension pipeline and a machine body support, the machine body support is arranged on the ballast bed, the crane on the bicycle body hoists the welding rail machine body on the vehicle to the machine body support, then the bicycle body drives out of the track pad area, the welding rail supply unit on the bicycle body supplies power, gas, liquid and oil for the welding rail machine body through the extension pipeline, and the welding rail machine body performs on-line welding operation on the new and old rails at the starting gap. The machine body support is stably arranged on the ballast bed through the support assembly, the support assembly is arranged below the machine body support, the low-positioned rail supports the machine body support through the support assembly, or the support assembly is arranged above the machine body support, and the high-positioned ballast bed pulls the machine body support through the support assembly. The track collecting vehicle group includes the first track collecting device, the shed car and the second track collecting device which are sequentially connected from front to back.

2. The non-vehicle-mounted welding-integrated rail replacement construction method according to claim 1, characterized by: The welding preparation work includes cutting, polishing, rust removal, supporting and aligning of the first pair and the second pair of new rails.

3. The non-vehicle-mounted welding-integrated rail replacement construction method according to claim 1, characterized by: The welding preparation work includes removing the rail fastener bolt in the old rail supporting pad area, installing the gauge pull rod, supporting the rail, rust removal and polishing.

4. The non-vehicle-mounted welding-integrated rail replacement construction method according to claim 1, characterized by: The welding preparation work includes rail shifting, cutting, polishing, rust removal and supporting.

5. The off-board weld-integrated rail replacement construction method of claim 1, wherein: The auxiliary vehicle group includes the road flat car, the first passenger car, the second passenger car, the third passenger car and the fourth passenger car which are sequentially connected from front to back.

Images