Construction method for parallel laying of rails across a line

Abstract

The present application relates to the field of long rail laying construction, in particular to a construction method for parallel line crossing rail laying, comprising: a rail laying head TC500 and a lateral rail laying device are respectively equipped on 6 N17 flat cars which are specially treated, and the N17 flat cars are connected to the rear of a long rail transport vehicle through shunting operation, realizing the function of laying adjacent left and right lines by walking a single line during long rail double line laying construction, solving the problems of low construction efficiency and work stoppage caused by back and forth line reversing and line switching during rail laying construction, the construction method can convert long rail laying from the traditional pushing and pulling mode to the broadcasting mode, eliminating the placement and collection process of the rollers, greatly reducing the labor intensity, and improving the construction efficiency.

Description

Technical Field

[0001] This invention relates to the field of long rail laying construction, specifically a construction method for laying parallel rails across parallel lines. Background Technology

[0002] With the rapid development of high-speed railways in my country, the traditional parallel track laying method involves using a traction vehicle and a TC500 track laying head in conjunction with a long rail transport vehicle for traction or pushing and releasing. After the first line is laid, the track laying equipment needs to return to the station and perform shunting operations via turnouts before parallel track laying can begin. In addition, due to the complexity of actual construction conditions, the traction method is often affected by weather and track slab superelevation caused by line curves, resulting in low construction efficiency, high manual labor requirements, high costs, and susceptibility to schedule disruptions.

[0003] Therefore, it is necessary to design and study how to solve the above problems and develop a new construction method that can improve both the quality and efficiency of track laying. Summary of the Invention

[0004] In order to solve the problems of low efficiency, discontinuous construction, delayed construction period and susceptibility to weather and road conditions in the traditional process of laying long steel rails, this invention provides a construction method for laying long steel rails across lines using a rotatable side-laying bracket, which can carry out laying operations on both sides of the track laying equipment in the direction of travel.

[0005] To achieve the above objectives, the present invention provides a construction method for laying parallel rails across parallel tracks, comprising the following steps:

[0006] S100: Preparations:

[0007] Long rails are loaded onto long rail transport vehicles and transported to the construction site. The TC500 track-laying head and lateral track-laying device are then mounted onto six specially treated N17 flatcars. Simultaneously, shunting operations are used to attach the N17 flatcars to the rear of the long rail transport vehicles. The handling method for the six N17 flatcars is as follows:

[0008] Flatbed trolley No. 1 (N17) was welded to the TC500 auger.

[0009] The N17 flatbed car No. 2 secures the rail plate through the square holes on both sides of N17 using high-strength bolts or welding. Several sets of bracket rollers are installed at the rear of the N17 flatbed car No. 2.

[0010] The No. 1 side berth support is fixed to the center of the No. 3 N17 flatbed truck with high-strength bolts, and a set of bracket rollers is installed at the front end.

[0011] Method for handling No. 4 N17 flatbed: The No. 2 and No. 3 side-laying brackets are fixed at a distance of 0.5 meters from the front and rear ends of No. 4 N17 flatbed with high-strength bolts. Two pairs of counterweight slide rails are installed in the middle of the flatbed, and concrete counterweight blocks are installed above the counterweight slide rails.

[0012] Handling method for No. 5 N17 flatbed: The No. 4 and No. 5 side-laying brackets are fixed at the front and rear ends of No. 5 N17 flatbed with high-strength bolts. Multiple sets of counterweight slide rails are installed in the middle and rear of the flatbed, and iron plate counterweights are installed above the counterweight slide rails.

[0013] The No. 6 N17 flatbed truck has a quick-release flatbed staircase installed on the side near the end, and railings installed on the other sides to facilitate construction workers to get on and off the No. 6 flatbed truck and to place rail saws, crowbars and other construction equipment.

[0014] S200: Construction process:

[0015] S201: Move the counterweight block away from the rail laying end and to a position that facilitates the rotation of the No. 2-5 side-laying support;

[0016] S202: The steering column of the crossbeam of the side-laying support frame #2-#5 is rotated 90° or -90° by a motor and gear drive to achieve the laying of the left or right parallel line. Then, the bottom flange of the retractable steel structure crossbeam is connected to the top flange of the #1 and #2 columns respectively to ensure that the flange surfaces are tightly fitted and without misalignment. During the operation of the train or when there is no track laying work, the top flange of the #1 and #2 columns of the side-laying support frame #2-#5 should be loosened, the support frame should be rotated 90° or -90° and retracted into the flatbed car to prevent the train from encroaching on the track.

[0017] S203: Test equipment: Connect the oil pipes of the 1#-5# side-laying support to the hydraulic valve group, start the hydraulic pump station, and test the action of each hydraulic cylinder by operating the hydraulic control handle to ensure that the cylinder action is sensitive and effective;

[0018] S204: Determining the starting position of long rails: After the long rail transport vehicle is moved to the rail laying construction site, the long rail transport vehicle is aligned to the specified position, so that the No. 5 side laying support is one N17 flatbed truck distance away from the already laid rail head, that is, the alignment is successful when the end of the No. 7 flatbed truck is aligned with the already laid rail head.

[0019] S205: Start the track laying operation: Use the winch of the TC500 track laying head to pull the rail clamps and push the rails into the hydraulic pushing device. Then, the hydraulic device provides power to push the long rails into the guide rail groove of the No. 1 side laying support. Adjust the hydraulic cylinder of the No. 1 side laying support to make the rails pass into the guide rail groove of the No. 2 side laying support. Then, adjust the horizontal and vertical hydraulic cylinders of the No. 2 side laying support to make the rails pass into the guide rail groove of the No. 3 side laying support. In this way, adjust the horizontal extension distance and vertical distance of the hydraulic cylinders of the No. 1-5 side laying supports to make the rails pass through the guide rail groove of the No. 5 side laying support linearly and smoothly. Adjust manually until the rail head enters the bearing groove and the rail head to be laid is aligned with the rail head already laid, leaving the rail gap according to the specification. Adjust the guide rail groove of the No. 5 side laying support so that the end of the long rail 5-6 meters falls into the bearing groove. Lock 7-8 sets of fasteners to achieve the purpose of fixing the long rails for side laying.

[0020] S206: Track laying operation: Powered by a diesel locomotive, a pair of long steel rails are laid into the rail bearing groove of the parallel line to complete the parallel track laying operation.

[0021] S207: During side-laying operations, the extension distance of the lateral hydraulic cylinders of side-laying supports 1#-5# and the stroke of the longitudinal hydraulic cylinders of side-laying supports 2#-5# are dynamically adjusted in real time according to the distance between two adjacent lines and the design elevation and curve radius of the track.

[0022] S208: When the long rail is about to be laid out, slow down the vehicle speed in advance, place a buffer pad at the landing point of the long rail, and then adjust the extension of the longitudinal hydraulic cylinders of the side laying supports 2#-5# in sequence, while adjusting the extension distance of the lateral hydraulic cylinders of the side laying supports 1#-5#, so that the long rail is as gently as possible from the rail guide groove of the 5# side laying support and falls onto the buffer block, and then manually adjust the rail to fall into the rail bearing groove.

[0023] S209: Install fasteners according to specifications to allow other engineering vehicles to pass through later. This completes the laying of a pair of rails. Repeat the construction process of S204-S209 to complete the laying of all long rails on the long rail car.

[0024] S210: Adjust the side-laying supports of #1-#5, move the counterweights to restore them to their initial entry positions, return to the rail-installing base for rail-installing operations, and complete a construction loop.

[0025] Furthermore, the No. 5 side-laying support is equipped with a camera with a crosshair lens and a display screen. The operator can make fine adjustments to the No. 5 side-laying support through the display screen during normal construction, which facilitates timely response in case of emergencies.

[0026] Furthermore, the No. 5 side berth support is equipped with No. 5 side berth support emergency wheels, which can provide support in the event of tipping over during the journey, preventing the iron wheels on one side of the N17 flatbed car from derailing and causing danger.

[0027] Furthermore, headlights are installed at the bottom of the side paving supports of 1#-5#.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] 1. A parallel track laying equipment designed independently is used to lay steel rails across lines. When laying long double-track steel rails, it can lay adjacent left and right tracks by running a single track, which solves the problems of low construction efficiency and idle time caused by back-and-forth track switching during track laying.

[0030] 2. The side-laying bracket uses a rotatable bracket and a sliding counterweight, which can be used to lay the left or right side of the line;

[0031] 3. Using this construction method, the traditional method of pushing and pulling long steel rails can be transformed into a delivery method, which eliminates the placement and collection of rollers, greatly reduces the amount of labor required, and improves construction efficiency.

[0032] 4. No need to return to the station to re-track, reducing construction steps and manual assistance in track laying, effectively improving construction efficiency and greatly reducing construction costs;

[0033] 5. The structural components and hydraulic components of this invention are easy to process and readily compatible, with a simple principle and strong applicability;

[0034] 6. It meets the needs of various working conditions and will not cause construction to be impossible or to be greatly delayed due to slippery roads caused by weather or other reasons;

[0035] 7. It solves the problem of track slabs being too high or too small, making them difficult or impossible for tractors to pull. Attached Figure Description

[0036] Figure 1 Laying out the main view for this invention;

[0037] Figure 2 A top view is provided for this invention;

[0038] Figure 3 A left view is provided for this invention;

[0039] Figure 4 This is a front view of the No. 2 N17 flatbed truck of the present invention;

[0040] Figure 5 This is a top view of the No. 2 N17 flatbed truck of the present invention;

[0041] Figure 6 This is a front view of the No. 3 N17 flatbed truck of the present invention;

[0042] Figure 7 This is a top view of the No. 3 N17 flatbed truck of the present invention;

[0043] Figure 8 This is a left view of the No. 3 N17 flatbed truck of the present invention;

[0044] Figure 9 This is a top view of the No. 4 N17 flatbed truck of the present invention;

[0045] Figure 10 This is a left view of the No. 4 N17 flatbed truck of the present invention;

[0046] Figure 11 This is a top view of the No. 5 N17 flatbed truck of the present invention;

[0047] Figure 12 This is a front view of the No. 6 N17 flatbed truck of the present invention.

[0048] Explanation of reference numerals in the attached figures:

[0049] 1-Long steel rail; 2-No. 2 N17 flatbed car; 21-Guide rail plate; 3-No. 3 N17 flatbed car; 31-No. 1 side berth support; 4-No. 4 N17 flatbed car; 41-No. 2 side berth support; 42-No. 3 side berth support; 5-No. 5 N17 flatbed car; 51-No. 4 side berth support; 52-No. 5 side berth support; 6-No. 6 N17 flatbed car; 61-Handrail; 62-Quick-release flatbed staircase; 7-Bracket roller; 8-Counterweight block; 81-Counterweight block slide rail; 9-Hydraulic cylinder; 10-Guide rail groove; 11-Vertical guide column; 12-Headlight; 13-Crossbeam steering column; 14-Extendable steel structure crossbeam; 15-No. 1 column; 16-No. 2 column. Detailed Implementation

[0050] Preferred embodiments of the invention will now be described in more detail. While preferred embodiments of the invention are described below, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0051] like Figures 1-12 The diagram illustrates a construction method for laying parallel rails across parallel tracks, comprising the following steps:

[0052] S100: Preparations:

[0053] The long rail 1 was loaded onto the long rail 1 transport vehicle and transported to the construction site. The TC500 track-laying head and the lateral track-laying device were then mounted onto six specially treated N17 flatcars. Simultaneously, the N17 flatcars were coupled to the rear of the long rail 1 transport vehicle through shunting operations. The handling method for the six N17 flatcars is as follows:

[0054] Flatbed trolley No. 1 (N17) was welded to the TC500 auger.

[0055] The No. 2 N17 flatbed 2 secures the rail plate 21 through the square holes on both sides of N17 by means of high-strength bolts or welding, and installs several sets of bracket rollers 7 at the rear end of the No. 2 N17 flatbed 2.

[0056] The No. 1 side paving bracket 31 of the No. 3 N17 flatbed 3 is fixed to the center position of the No. 3 N17 flatbed 3 by high-strength bolts, and a set of bracket rollers 7 are installed at the front end;

[0057] Method for handling No. 4 N17 flatbed truck: The No. 2 and No. 3 side-laying brackets are fixed at the front and rear ends of No. 4 N17 flatbed truck 0.5 meters away with high-strength bolts, and two pairs of counterweight slide rails 81 are installed in the middle of the flatbed truck. Concrete counterweight blocks 8 are installed above the counterweight slide rails 81.

[0058] Method for handling No. 5 N17 flatbed truck 5: The No. 4 and No. 5 side-laying brackets are fixed at the front and rear ends of No. 5 N17 flatbed truck 5 with high-strength bolts. Multiple sets of counterweight slide rails 81 are installed in the middle and rear of the flatbed truck. Iron plate counterweights 8 are installed above the counterweight slide rails 81.

[0059] The No. 6 flatbed truck 6 has a quick-release flatbed staircase 62 installed on the side near the end, and railings 61 installed on the other sides to facilitate construction workers to get on and off the No. 6 flatbed truck and to place rail saws, crowbars and other construction equipment.

[0060] S200: Construction process:

[0061] S201: Move counterweight 8 to a position away from the rail laying end and to a position that facilitates the rotation of the No. 2-5 side-laying support;

[0062] S202: The steering column 13 of the crossbeam of the side-laying support 2#-5# is rotated 90° or -90° by the motor and gear drive to realize the laying of the left or right parallel line. Then, the bottom flange of the retractable steel structure crossbeam 14 is connected to the top flange of column 1#15 and column 2#16 respectively to ensure that the flange surfaces are tightly fitted and without misalignment. During the operation of the train or when there is no track laying operation, the top flanges of column 1#15 and column 2#16 of the side-laying support 2#-5# should be loosened, the support should be rotated 90° or -90° and retracted into the flatbed car to prevent the train from encroaching on the track.

[0063] S203: Test equipment: Connect the oil pipes of the 1#-5# side-laying support to the hydraulic valve group, start the hydraulic pump station, and test the action of each hydraulic cylinder 9 by operating the hydraulic control handle to ensure that the cylinder action is sensitive and effective;

[0064] S204: Determining the starting position of long rail 1: After the long rail 1 transport vehicle is moved to the rail laying construction site, the long rail 1 transport vehicle is aligned to the specified position, so that the No. 5 side laying support is one N17 flatbed truck distance away from the already laid rail head, that is, the alignment is successful when the end of the No. 7 flatbed truck is aligned with the already laid rail head.

[0065] S205: Start track laying operation: Use the winch of the TC500 track laying head to pull the rail clamps and push the rails into the hydraulic pushing device. Then, the hydraulic device provides power to push the long rail 1 into the guide rail groove 10 of the 1# side laying bracket 31. By adjusting the hydraulic cylinder 9 of the 1# side laying bracket 31, the rail is inserted into the guide rail groove 10 of the 2# side laying bracket 41. Next, by adjusting the transverse hydraulic cylinder 9 of the 2# side laying bracket 41, the retractable steel structure beam 14 is extended. By adjusting the longitudinal hydraulic cylinder 9 of the 2# side laying bracket 41, the vertical guide column 11 is moved downward, so that the rail is inserted into the guide rail groove 10 of the 3# side laying bracket 42. Next, by adjusting the horizontal and vertical hydraulic cylinders 9 of the #3 side-laying bracket 42, the rail is inserted into the guide rail groove 10 of the #4 side-laying bracket 51. In this way, by adjusting the horizontal extension distance and vertical distance of the hydraulic cylinders 9 of the #1-#5 side-laying brackets, the rail is made to smoothly and linearly pass through the guide rail groove 10 of the #5 side-laying bracket 52. Through manual adjustment, the rail head is inserted into the bearing groove, and the rail head to be laid is aligned with the rail head already laid, leaving a rail gap according to the specification. The guide rail groove 10 of the #5 side-laying bracket 52 is adjusted so that the end of the long rail 1, 5-6 meters long, falls into the bearing groove, and 7-8 sets of fasteners are locked to achieve the purpose of fixing the long rail 1 so that it can be laid sideways.

[0066] S206: Track laying operation: Powered by a diesel locomotive, a pair of long steel rails 1 are laid into the rail bearing groove of the parallel line to complete the parallel track laying operation.

[0067] S207: During side-laying operations, the extension distance of the lateral hydraulic cylinder 9 of side-laying supports 1#-5# and the stroke of the longitudinal hydraulic cylinder 9 of side-laying supports 2#-5# are dynamically adjusted in real time according to the distance between two adjacent lines and the elevation and curve radius of the track design.

[0068] S208: When the long rail 1 is about to be laid out, slow down the vehicle speed in advance, place a buffer pad at the landing point of the long rail 1, and then adjust the extension of the longitudinal hydraulic cylinder 9 of the side laying support 2#-5# in sequence, while adjusting the extension distance of the transverse hydraulic cylinder 9 of the side laying support 1#-5#, so that the long rail 1 can be gently released from the guide rail groove 10 of the 5# side laying support and fall onto the buffer block, and then manually adjust the rail to fall into the rail bearing groove.

[0069] S209: Install fasteners according to specifications to allow other engineering vehicles to pass through later. This completes the laying of a pair of rails. Repeat the construction process of S204-S209 to complete the laying of all long rails 1 on the long rail car.

[0070] S210: Adjust the side-laying supports of #1-#5, move the counterweight 8 to restore it to its initial entry position, return to the rail installation base to carry out rail installation work, and complete a construction loop.

[0071] To facilitate construction in low-light conditions, all side-laying supports (#1-#5) are equipped with 12 headlights.

[0072] Some technical terms used in this invention:

[0073] 1. TC500 Head: A professional track-laying machine consisting of a generator, hydraulic cylinder, and bracket.

[0074] 2. N17 flatbed truck: The end of the N17 flatbed truck closest to the TC500 head is defined as the front end of the board.

[0075] 3. Rail stop plate: During the final rail lowering process in construction, the end of the rail loses support after passing through the bracket of the TC500 head, which will cause a particularly large swing, thus threatening the safety of personnel and equipment on the parallel line. The rail stop plate can effectively limit the swing trajectory of the rail and keep the rail on the flatbed car at all times.

[0076] 4. Bracket rollers: They guide and lift the rails, preventing friction with the flatbed car and allowing the long rails to enter the No. 1 side-laying support 31 more smoothly.

[0077] 5. Counterweight installation requirements: According to a specific embodiment, the force that the bracket will experience is F = 38 × 60 × 2 × 9.8 = 44.7 KN, and the bending moment is M = FL = 44.7 × 5 = 223.5 KN·m. Considering the self-weight of the N17 flatbed, the counterweight of flatbed No. 4 N17 flatbed uses 4 C20 concrete blocks of 2200 × 750 × 20 cm. Flatbed No. 5 N17 flatbed will be subjected to greater weight and bending moment of the long steel rail during construction, so the counterweight of flatbed No. 5 N17 flatbed uses 9 iron plates of 2300 × 75 × 30 cm. During normal operation, the counterweight should be moved to the center of the plate via the slide rail.

[0078] 6. Rail guide groove: It consists of four rail guide wheels inside, which are used to guide the direction of the rail.

[0079] 7. Crosshair lens camera and display screen: Installing a camera with a crosshair lens and display screen can greatly reduce the workload of the ground commander. Because there is a center line in the center of the track slab, the No. 5 operator can make fine adjustments to the support through the display screen during normal construction, and take timely measures in case of emergencies such as sharp bends and curves.

[0080] 8. Emergency wheels for the No. 5 side berth support: These wheels can provide support in case of tipping over during operation, preventing the iron wheels on one side of the N17 flatbed from derailing and causing danger.

[0081] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A construction method for laying steel rails in parallel across a line in parallel, characterized in that, The method comprises the following steps: S100: preparation: The long steel rail is loaded and transported to the construction site by a long steel rail transport vehicle, the track laying head TC500 and the lateral track laying device are respectively equipped on 6 N17 flat cars which are specially treated, and the N17 flat cars are connected to the tail of the long steel rail transport vehicle through shunting operation; wherein, the treatment method of the 6 N17 flat cars is as follows: The No. 1 N17 flat car is welded with the track laying head TC500; The No. 2 N17 flat car is fixedly connected with the rail blocking plate through the square holes on the two sides of the N17 flat car by high-strength bolts or welding, and a plurality of groups of bracket rollers are installed at the rear end of the No. 2 N17 flat car; The No. 3 N17 flat car is fixedly connected with the No. 1 lateral track laying support at the center position of the No. 3 N17 flat car by high-strength bolts, and a group of bracket rollers are installed at the front end of the No. 3 N17 flat car; The treatment method of the No. 4 N17 flat car is as follows: the No. 2 and No. 3 lateral track laying supports are fixedly connected with the No. 4 N17 flat car at positions 0.5 meters away from the front and rear ends of the No. 4 N17 flat car respectively, and two pairs of counterweight sliding rails are installed in the middle of the flat car, and concrete counterweights are installed above the counterweight sliding rails; The treatment method of the No. 5 N17 flat car is as follows: the No. 4 and No. 5 lateral track laying supports are fixedly connected with the No. 5 N17 flat car at positions 0.5 meters away from the front and rear ends of the No. 5 N17 flat car respectively, and a plurality of groups of counterweight sliding rails are installed in the middle and tail of the flat car, and iron plate counterweights are installed above the counterweight sliding rails; The No. 6 N17 flat car is provided with a quick-release flat car ladder at the side close to the tail end, and a handrail is installed at the other side, so as to facilitate workers to get on and off the No. 6 flat car and place a rail saw, a crowbar and other construction instruments; S200: construction process: S201: move the counterweights to positions away from the steel rail laying end, and move to positions facilitating the rotation of the No. 2 to No. 5 lateral track laying supports; S202: drive the No. 2 to No. 5 lateral track laying support cross beams to rotate 90° or -90° through the motor and gear drive, so as to realize the laying of the left line or the right line of the parallel line, then connect the bottom flanges of the telescopic steel structure cross beams with the top flanges of the No. 1 column and the No. 2 column respectively, and ensure that the flange surfaces are tightly and accurately connected; during the driving process or when there is no track laying operation, loosen the top flanges of the No. 1 column and the No. 2 column of the No. 2 to No. 5 lateral track laying supports, rotate the supports 90° or -90°, and retract them into the flat car to prevent the invasion of the track; S203: test equipment: connect the oil pipes of the No. 1 to No. 5 lateral track laying supports to the hydraulic valve group, start the hydraulic pump station, and test the action of each group of hydraulic cylinders by operating the hydraulic control handle, so as to ensure the sensitivity and effectiveness of the oil cylinder action; S204: long steel rail laying position determination: after the long steel rail transport vehicle is adjusted to the track laying construction site, the long steel rail transport vehicle is positioned to the specified position, so that the No. 5 lateral track laying support is at a distance of one N17 flat car from the laid steel rail head, that is, the tail end of the No. 7 flat car is aligned with the laid steel rail head, and the positioning is successful. S205: Start the track laying operation: use the winch of the track laying head TC500 host to pull the rail card to push the steel rail into the hydraulic pushing device, then the hydraulic device provides power to push the long steel rail into the rail slot of the 1# side laying support, adjust the hydraulic cylinder of the 1# side laying support to make the steel rail enter the rail slot of the 2# side laying support, again, adjust the horizontal and vertical hydraulic cylinders of the 2# side laying support to make the steel rail enter the rail slot of the 3# side laying support; in this way, adjust the horizontal and vertical distance of the hydraulic cylinders of the 1#-5# side laying supports to make the steel rail linearly and smoothly pass through the rail slot of the 5# side laying support, and through manual adjustment, until the head of the steel rail falls into the rail slot, and the head of the steel rail to be laid is aligned with the head of the steel rail that has been laid, and the rail gap is reserved according to the specification; adjust the rail slot of the 5# side laying support to make the last 5-6 meters of the long steel rail fall into the rail slot, and lock the 7-8 groups of fasteners to achieve the purpose of fixing the long steel rail for side laying; S206: Track laying operation: provide power by the diesel locomotive to broadcast a pair of long steel rails into the parallel rail slot to complete the parallel line crossing parallel laying of steel rails; S207: In the side laying operation, according to the distance between the adjacent two lines and the elevation and curve radius of the track design, the extension distance of the horizontal hydraulic cylinders of the 1#-5# side laying supports and the stroke of the vertical hydraulic cylinders of the 2#-5# side laying supports are adjusted in real time and dynamically; S208: When the long steel rail is about to be broadcast, the speed is slowed down in advance, the buffer pad is placed at the falling point of the long steel rail, then the vertical hydraulic cylinders of the 2#-5# side laying supports are adjusted in turn, and the extension distance of the horizontal hydraulic cylinders of the 1#-5# side laying supports is adjusted, so that the long steel rail is as soft as possible to fall off the rail slot of the 5# side laying support and fall onto the buffer block, and the steel rail is completely fallen into the rail slot through manual adjustment; S209: Install the fasteners according to the specification to achieve the purpose that other engineering vehicles can pass through in the later period, thus completing the laying of a pair of steel rails, and repeating the construction operation process of S204-S209 to complete the laying of all long steel rails on the long rail car; S210: Adjust the 1#-5# side laying supports, move the counterweight blocks, and restore them to the initial entry position, return to the rail loading base for rail loading operation, and complete a construction closed loop.

2. The method of claim 1, wherein, The 5# side laying support is installed with a cross-silk lens camera and a display screen, and the operator can make fine adjustments to the 5# side laying support through the display screen during normal construction, which is convenient for timely response measures in emergency situations.

3. The method according to claim 1 or 2, wherein, The 5# side laying support is installed with 5# side laying support emergency wheels, which can provide support when the car falls during operation to prevent the iron wheel on one side of the N17 flat car from falling off the track and causing danger.

4. The method of claim 3, wherein, The 1#-5# side laying supports are all provided with headlamps.

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