High-speed railway turnout group transportation replacement special equipment

Abstract

The utility model provides a kind of high-speed railway turnout group transport replacement special equipment, belong to railway engineering technical field. Including by heavy rail car+container type welding rail car+several special turnout transport flat car+container type welding rail car+heavy rail car form for the integrated operation of group rail piece transport, replacement, welding and recycling integrated operation of whole column special marshalling;Container type welding rail car is carried with welding rail car folding boom crane, flash welding machine and welding rail car auxiliary support leg etc.;Special turnout transport flat car is equipped with at least two flat car folding boom crane, flat car auxiliary support leg, lifting rail and special loading tooling.The utility model utilizes special equipment and construction method to realize the integrated operation of high-speed railway turnout from bulk pre-assembly to group transport, replacement, welding and old turnout recycling, solve the problem that existing high-speed railway turnout is completed group replacement in a skylight point, make up the deficiency of high-speed railway turnout group replacement operation technology.

Description

Technical Field

[0001] This utility model belongs to the field of railway engineering technology, specifically relating to a special equipment for the group transportation and replacement of high-speed railway turnouts. Background Technology

[0002] With the increasing operating time of my country's high-speed railways, the existing ballastless turnouts across the railway network are experiencing continuous and segmented defects due to complex operating conditions and various climatic factors. Therefore, the need for high-speed railway ballastless turnout replacement technology is becoming increasingly urgent. However, the current method of replacing high-speed railway ballastless turnouts mainly involves transporting individual components—switch switch rail assemblies (with pads), turnout core assemblies (with pads), guide curves, and guard rails—from the turnout factory to a transfer yard near the construction site via road or rail. Then, during track maintenance windows, these components are transported by railcar to the construction site for modular assembly and replacement. This method of ballastless turnout replacement not only has a low level of mechanization but also requires a large number of construction personnel and numerous small tools during on-site replacement. This construction method is not only time-consuming and labor-intensive but also limited by the on-site working environment, resulting in lower assembly accuracy than the pre-assembled turnouts in the turnout factory, which is detrimental to the long-term application of the newly replaced turnouts.

[0003] Therefore, it is necessary to provide a turnout replacement method for high-speed railway turnouts that is more intelligent and automated and integrates pre-laying, transportation, replacement, welding and old turnout recycling, as well as its supporting equipment for transporting and replacing grouped rail components. This would solve the problems of time-consuming, labor-intensive and low assembly accuracy in existing construction projects, thereby achieving the goal of completing the work, removing materials, and clearing the site after the work is finished. Utility Model Content

[0004] The technical problem solved by this utility model is to overcome the shortcomings of the prior art and provide a special equipment for the group transportation and replacement of high-speed railway turnouts, so as to realize efficient, high-precision and integrated turnout replacement operations.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: Specialized equipment for transporting and replacing high-speed railway turnouts in groups includes: traction power unit, welding operation unit and turnout transport unit; The traction power unit includes two heavy railcars, which are respectively assembled at the beginning and end of the entire train; The welding operation unit includes two containerized rail welding vehicles, which are respectively arranged inside the traction power unit; each containerized rail welding vehicle is equipped with a rail welding vehicle folding boom crane, a flash welding machine, as well as rail welding vehicle auxiliary outriggers, a generator container, and a welding machine crane power unit; the rail welding vehicle folding boom crane is used to move the flash welding machine to the adjacent rail joint for welding operations; The turnout transport unit includes several dedicated turnout transport flatcars positioned between the first and last two welding operation units; each dedicated turnout transport flatcar is equipped with at least two flatcar folding boom cranes, flatcar auxiliary outriggers, dedicated loading fixtures, and a flatcar crane power unit; the flatcar folding boom cranes are used for lifting turnout rail components, and the dedicated loading fixtures are used for layered loading and fixing of the pre-laid turnout rail components; The heavy railcar, containerized rail welding car, and special turnout transport flatcar are connected by couplers to form an integrated operation group.

[0006] Further defining the above scheme, a large slewing bearing is added to the lower part of the slewing device of the flatcar folding boom crane on the dedicated turnout transport flatcar. The large slewing bearing enables the base of the flatcar folding boom crane to change its position laterally relative to the car frame, thereby allowing the working range of the flatcar folding boom crane to cover the left or right adjacent track. A slewing reducer 322 is provided on the large slewing bearing 321 to realize the slewing drive of the crane itself.

[0007] Further specifying the above solution, the large slewing bearing can be replaced by a set of transverse guide rail mechanisms, through which the transverse guide rail mechanisms realize the lateral movement and positioning of the flatcar folding boom crane base.

[0008] Further defining the above scheme, the special loading fixture includes at least two layers of bearing structure: the first layer of rotating transverse support platform is used to load the turnout section rail assembly; the second layer of rotating transverse support platform is used to load the straight tip rail section and the curved lower rail assembly; the rotating transverse support platform enables the rail assembly loaded on it to undergo necessary transverse movement and rotation during transportation to adapt to and pass through curved lines.

[0009] Further defining the above scheme, the structure of the special loading fixture includes a fixture slewing bearing and a fixture support. The fixture slewing bearing and fixture support mate with the chassis floor surface, allowing rotation around the slewing bearing on the chassis floor surface to adjust its position on the chassis, thus meeting the loading requirements of rail components under different working conditions. A universal ball joint is installed at the lower part of the fixture support, enabling rolling of the fixture during rotation while meeting load-bearing requirements, thereby reducing rotational resistance. The upper part of the fixture slewing bearing and fixture support is provided with a first-layer slide rail and a second-layer slide rail from bottom to top. The lower part of the first-layer slide rail is fixedly connected to the fixture slewing bearing and fixture support. A first-layer rotating transverse support is provided on the first-layer slide rail, and the sliding plates on both sides of the first-layer rotating transverse support slide and adapt to the sliding grooves on the first-layer slide rail. The first-layer slide rail has a long support positioning pin and a short support positioning seat at each end. One end of the second-layer slide rail is rotatably inserted into the long support positioning pin through a pin hole, and the other end of the second-layer slide rail is adapted to the single-sided stop of the short support positioning seat, so that the second-layer slide rail can rotate and move away around the long support positioning pin in a specified direction. A drive cylinder is installed between the long support positioning pin and the second-layer slide rail. The drive cylinder can drive the second-layer slide rail and the second-layer rotating transverse support on it to rotate at a fixed angle, so as to facilitate the placement of rail components on the first-layer rotating transverse support. The second-layer slide rail has a second-layer rotating transverse support, and the sliding plates on both sides of the second-layer rotating transverse support slide and are slidably adapted to the sliding grooves on the second-layer slide rail. Both the first-layer rotating transverse support and the second-layer rotating transverse support are equipped with locking devices.

[0010] Further defining the above scheme, the multiple articulated boom cranes on the dedicated turnout transport flatcar are equipped with a synchronization control system; the synchronization control system includes displacement sensors, tension sensors, and angle encoders; the displacement sensors are used to collect displacement data at each lifting point and perform closed-loop control with displacement synchronization as the target; the tension sensors are installed at the lifting points to monitor the lifting force in real time and feed it back to the main control system for tension synchronization protection; the angle encoders are used to provide real-time feedback on the rotation angle of each articulated boom crane to achieve rotation synchronization control.

[0011] Further defining the above scheme, the rail welding vehicle folding boom crane on the containerized rail welding vehicle is also equipped with the synchronous control system and can realize the welding operation of adjacent rail joints within a maximum line spacing of 5.5m; the flatcar folding boom crane on the dedicated turnout transport flatcar can realize the lifting operation of adjacent lines within a maximum line spacing of 5.5m.

[0012] Advantages of this utility model compared to the prior art: 1. This solution features integrated and efficient operation: By utilizing specialized equipment and construction methods, it is possible to achieve integrated operation of high-speed railway turnouts, from bulk pre-assembly to group transportation, replacement, welding, and old turnout recycling. This allows the entire turnout replacement to be completed within a single track maintenance window, significantly improving operational efficiency and achieving "work completed, materials removed, and site cleaned up." 2. This solution offers high precision and high quality: By pre-laying the track at the base, assembly accuracy is ensured, reducing on-site operations and the number of welding joints. Furthermore, specialized tooling and a synchronous control system ensure the condition of the rail components during transportation and hoisting, significantly improving the installation quality and service life of the newly replaced turnouts. 3. This solution is highly mechanized and intelligent: the equipment integrates multiple functions and adopts intelligent technologies such as synchronous control and sensor monitoring, which greatly reduces manual input, reduces labor intensity, and improves operational safety and reliability; 4. This solution has good adaptability: the special equipment can be flexibly assembled to meet the transportation needs of extended rails of different lengths; the crane, through the design of large slewing bearing or lateral guide rail, can adapt to the operation needs of adjacent lines on the left and right sides; the special loading tooling can ensure that the train group can safely pass through small radius curves. 5. This solution is economical and environmentally friendly: it reduces reliance on multiple small machines and a large amount of manpower, lowers overall construction costs, reduces on-site operation time and traffic disruption, and is more economical and environmentally friendly. Attached Figure Description

[0013] Figure 1 This is a front view of the formation structure of the special equipment of this utility model in the transportation state; Figure 2 This is a top view of the formation structure of the special equipment of this utility model in the transportation state; Figure 3 This is a schematic diagram of the containerized rail welding vehicle in this utility model; Figure 4 This is a schematic diagram of the structure of the special turnout transport flatcar in this utility model; Figure 5 This is a schematic diagram of the special turnout transport flatcar crane in this utility model located on different working sides ((a) right side (b) left side); Figure 6 This is a front view of the structure of the special loading tool of this utility model; Figure 7 This is an isometric view of the structure of the special loading tool of this utility model; Figure 8 This is a schematic diagram of the rotating transverse support platform in the special loading fixture of this utility model; Figure 9 This is a schematic diagram of the straight tip rail in the turnout rail component grouping of this utility model; Figure 10This is a schematic diagram of the turnout core section in the turnout rail component grouping of this utility model; Figure 11 This is a schematic diagram of the lower curved track in the turnout rail component grouping of this utility model; Figure 12 This is a flowchart illustrating the construction method of this utility model. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0015] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0016] Please see Figure 1-12 The embodiments of this utility model are described in detail below.

[0017] See Figures 1 to 2 Specialized equipment for transporting and replacing turnouts in groups on high-speed railways. This equipment mainly consists of a traction power unit, a welding operation unit, and a turnout transport unit.

[0018] The traction power unit consists of two heavy railcars 1, which are respectively arranged at the beginning and end of the entire train.

[0019] The welding operation unit consists of two containerized rail welding vehicles, each grouped inside the traction power unit. (See also...) Figure 3 As shown, each containerized rail welding vehicle 2 is equipped with a rail welding vehicle folding boom crane 23, a flash welder 24, rail welding vehicle auxiliary outriggers 22, a generator container 21, and a welding machine crane power unit 25. The rotation and extension of the rail welding vehicle folding boom crane 23 can move the flash welder 24 to the rail joint of the adjacent line for welding operations. Before welding operations, the rail welding vehicle auxiliary outriggers 22 are lowered first, and then the welding operation is carried out to ensure the safety of the entire train being parked during welding operations.

[0020] In this embodiment, a containerized rail welding car is equipped at each end of the special train formation, which can simultaneously weld the rail joints before and after the switch after replacement, thereby improving work efficiency.

[0021] The turnout transport unit includes several dedicated turnout transport flatcars 3 positioned between the first and last two welding operation units. (See also...) Figures 4 to 5 Each dedicated turnout transport flatcar 3 is equipped with at least two flatcar folding boom cranes 32, flatcar auxiliary outriggers 33, dedicated loading fixtures 31, and a flatcar crane power unit 34. The flatcar folding boom cranes 32 are used for lifting turnout rail components, and work with the auxiliary outriggers during the lifting process to ensure the safety and reliability of the lifting operation. The dedicated loading fixtures 31 are used for layered loading and fixing of the pre-laid turnout rail components, and to achieve necessary rotation and lateral movement when passing through curves to adapt to the deformation caused by the curve, ensuring the loading reliability during transportation and the coordinated deformation of the rail components when the train passes through curves, thereby improving the stress state during transportation.

[0022] The aforementioned heavy railcar 1, containerized rail welding car 2, and special turnout transport flatcar 3 are assembled in a specific order to form a special train integrating transportation, replacement, welding, and recycling functions.

[0023] Preferably, in addition to its own slewing device, the flatcar folding boom crane 32 on the dedicated turnout transport flatcar 3 is further equipped with a large slewing bearing 321 at its lower part. This large slewing bearing 321 allows the base of the flatcar folding boom crane 32 to laterally change position relative to the car frame, thereby enabling the working range of the flatcar folding boom crane 32 to cover the left or right adjacent track. A slewing reducer 322 is installed on the large slewing bearing 321 to drive the crane's own slewing. Preferably, the large slewing bearing 321 can be replaced by a set of transverse guide rail mechanism. The transverse guide rail mechanism realizes the lateral movement and positioning of the base of the flatcar folding boom crane 32, thereby meeting the lifting operation requirements of the left or right adjacent lines of different lines.

[0024] To facilitate the assembly and welding of loose turnout components after they are transported to the pre-laying base, a specialized loading fixture was designed to provide a reliable and stable assembly foundation for the loose-material turnout assembly. This specialized loading fixture serves as a pre-assembly workbench; by adjusting the corresponding adjusting screws, the position of each pad on the workbench can be precisely adjusted to match the positions of the bolt holes obtained from on-site surveys and mapping. For details, please refer to [link / reference]. Figure 6As shown, the special loading fixture 31 includes at least two layers of load-bearing structure: the first layer, a rotating transverse support platform 312, is used to load the turnout section 5 of rail components; the second layer, a rotating transverse support platform 313, is used to load the straight tip section 4 and the curved lower section 6 of rail components. The rotating transverse support platforms 312 and 313 enable the rail components loaded on them to undergo necessary lateral movement and rotation during transportation to adapt to curved tracks. Simultaneously, each special loading fixture is equipped with a slewing bearing at its lower part, which can be used in conjunction with the crane's large slewing bearing for rotational positioning, thereby maximizing the use of loading space while facilitating the lifting of the rail components after the crane has rotated.

[0025] See Figures 6 to 7 The structure of the special loading fixture 31 includes a slewing bearing seat 311 and a fixture support 314. The slewing bearing seat 311 and the fixture support 314 mate with the chassis floor surface, allowing rotation around the slewing bearing seat on the chassis floor surface to adjust its position on the chassis, thus meeting the requirements for rail component loading under different working conditions. A universal ball joint is installed at the lower part of the fixture support 314, which can achieve rolling during fixture rotation while meeting load-bearing requirements, thereby reducing rotational stress. Resistance; the upper part of the tooling slewing bearing 311 and tooling support 314 is provided with a first layer of slide rail 319 and a second layer of slide rail 320 from bottom to top. The lower part of the first layer of slide rail 319 is fixedly connected to the tooling slewing bearing 311 and tooling support 314. The first layer of slide rail 319 is provided with a first layer of rotating transverse support platform 312. The sliding plates on both sides of the first layer of rotating transverse support platform 312 are slidably adapted to the sliding grooves on the first layer of slide rail 319; the first layer of slide rail At both ends of 319 are respectively provided a long support positioning pin 316 and a short support positioning seat 317. One end of the second-layer slide rail 320 is rotatably inserted into the long support positioning pin 316 through a pin hole, and the other end of the second-layer slide rail 320 is adapted to the single-sided stop of the short support positioning seat 317, so that the second-layer slide rail 320 can rotate and move away around the long support positioning pin 316 in a specified direction. A drive cylinder 315 is installed between the long support positioning pin 316 and the second-layer slide rail 320, and drives the cylinder to move away by the drive cylinder. The cylinder can drive the second-layer slide frame 320 and the second-layer rotating transverse support platform 313 thereon to rotate at a fixed angle, thereby facilitating the hoisting of rail components onto the first-layer rotating transverse support platform 312. The second-layer slide frame 320 is equipped with the second-layer rotating transverse support platform 313, and the sliding plates on both sides of the second-layer rotating transverse support platform 313 are slidably fitted into the sliding grooves on the second-layer slide frame 320. Both the first-layer rotating transverse support platform 312 and the second-layer rotating transverse support platform 313 are equipped with locking devices 318. The locking devices 318 are used to press the iron pads on both sides of the ends of the turnout rail components, thus fixing the turnout rail components. (See also...) Figure 8As shown, each locking device 318 includes two pressure plates. One end of the two pressure plates engages with the locking plate on the side of the rotating transverse support via a locking rod. After the two pressure plates press down the corresponding pads, their other ends are tightened and fixed by bolts.

[0026] The lateral and rotation devices attached to the aforementioned special loading fixture can ensure that the stress and deformation of the rail components are within the linear elastic range when the train is transporting turnout rail components through a minimum R180 curve. This ensures reliable loading and transportation without causing plastic deformation or stress exceeding the limit damage to the rail components.

[0027] In addition, the multiple folding boom cranes 32 on the dedicated turnout transport flatcar 3 are equipped with a control system that prioritizes displacement synchronization and protects against tension synchronization. The synchronization control system includes displacement sensors, tension sensors, and angle encoders. The displacement sensors are used to collect displacement data at each lifting point and perform closed-loop control with displacement synchronization as the goal. The tension sensors are installed at the lifting points to monitor the lifting force in real time and feed it back to the main control system for tension synchronization protection. The angle encoders are used to provide real-time feedback on the rotation angle of each folding boom crane 32, thereby achieving synchronous rotation control of different folding boom cranes during lifting operations.

[0028] The rail welding vehicle folding boom crane 23 on the containerized rail welding vehicle 2 is also equipped with the aforementioned synchronous control system and can perform rail joint welding operations on adjacent lines within a maximum line spacing of 5.5m; correspondingly, the flatcar folding boom crane 32 on the dedicated turnout transport flatcar 3 can perform lifting operations on adjacent lines within a maximum line spacing of 5.5m.

[0029] The dedicated turnout transport flatcar 3 is equipped with an automatically lifting guardrail. During normal parking and rail component transportation, the lifting guardrail is raised to provide safety protection. When rail components are being lifted, the lifting guardrail is lowered so as not to affect the lifting operation of groups of rail components.

[0030] A method for replacing high-speed railway turnouts in groups is disclosed, utilizing the aforementioned specialized equipment. In this embodiment, the specialized equipment is assembled as follows: 1 GCD-1000 heavy-duty railcar + 2 containerized rail welding cars + several dedicated turnout transport flatcars 3 + 2 containerized rail welding cars + 1 GCD-1000 heavy-duty railcar, forming a dedicated trainset for integrated transportation, replacement, welding, and recycling of grouped rail components. Two GCD-1000 heavy-duty railcars serve as traction power, and two containerized rail welding cars are used for welding adjacent rail joints at the turnout replacement site. Furthermore, the specialized equipment includes several 25m long dedicated turnout transport flatcars; taking an example with 25m extension rails before and after the turnout, the required number of flatcars is determined based on the total length.

[0031] For detailed construction methods, please refer to [link / reference]. Figure 12 As shown, it includes the following steps: S1. Loose rail components are transported to the rail component pre-laying base by road or a combination of road and rail (after conducting on-site research on the current status of existing major high-speed rail infrastructure maintenance bases, it was determined that the high-speed rail infrastructure maintenance work area would be used as the base for the pre-laying of loose rail components, so as to quickly transfer the pre-laid grouped rail components to the construction site).

[0032] S2. Based on the length of the extended rails to be replaced, trains are assembled on the stopping line of the pre-laying base, and loose rail components are pre-laid. Considering the case of 25m extended rails before and after the turnout, the original loose rail components are pre-laid and welded at the base to form three groups of rail components: straight switch rail 4, turnout center section 5, and curved lower rail 6. (See reference...) Figure 9-11 As shown.

[0033] In this step, when the rail components are pre-laid at the pre-laying base, a tracked flash welding machine for both road and rail is also provided to realize the welding of loose rail components at the pre-laying base, thereby forming the prescribed grouped rail component sections. In addition, the tracked flash welding machine not only has strong site adaptability and high operating efficiency, but its turnout flash welding machine head can also perform welding operations on the rail components in the turnout area.

[0034] The base pre-laying method in step S2 above includes the following steps: S21. Place the special tooling for pre-laying rail components on the ground next to the pre-laying base stop line; S22. Based on the bolt hole location data of the turnout section to be replaced obtained from the on-site survey and mapping, accurately adjust the position of each pad on the pre-laid special tooling workbench; S23. Each dedicated turnout transport flatcar 3 in the train set is prepared for startup, and the accompanying flatcar auxiliary support legs 33 are lowered. S24. Use the flatcar folding boom crane 32 on the dedicated turnout transport flatcar 3 to lift the loose rail components onto the workbench of the pre-laid special tooling; S25. Adjust the position of the rail component pad according to the hole spacing of the pad on the workbench to complete the assembly and alignment of the turnout rail components; S26. Based on the adhesive joint, a dual-purpose track flash welding machine for both road and rail uses a flash welding machine to weld the assembled and aligned rail components to form three groups of rail components: straight tip rail section 4, turnout section 5, and curved lower rail 6. S27. Perform flaw detection and static treatment on the three-section rail assembly after welding.

[0035] S3. The assembled and pre-laid rail components are loaded onto the dedicated turnout transport flatcar 3. The turnout center section 5 is installed on the first-layer rotating transverse support platform 312, and the straight tip rail section 4 and the curved lower rail 6 are installed on the second-layer rotating transverse support platform 313. The rail components are then secured using the locking device on the dedicated loading fixture 31. After the rail components are loaded at the pre-laying base, the train waits for the closure signal and track maintenance window information for the line where the turnout to be replaced is located.

[0036] In step S3 above, the method for loading the group of rail components at the base includes the following steps: S31. The train sets are parked in place on the base parking line. Each dedicated turnout transport flatcar 3 is prepared for startup. The flatcar auxiliary outriggers 33 are lowered, and the large slewing bearing 321 of the flatcar folding boom crane 32 and the load-bearing fixtures are adjusted to rotate to the appropriate lifting position. S32. Open the special loading fixture 31 on each special turnout transport flatcar 3, use the flatcar folding boom crane 32 to lift the turnout section 5 rail components at multiple points, place them on the rotating transfer bearing platform 312 on the first layer of the special loading fixture 31, and adjust their position so that they are as close as possible to the longitudinal centerline of the flatcar. S33. Lock the first layer of the special loading fixture 31; S34. Use the flatcar folding boom crane 32 to lift the six groups of rail components of the lower curved section at multiple points and place them on the second-layer rotating transverse bearing platform 313 of the special loading fixture 31. S35. Use the flatcar folding boom crane 32 to lift the four groups of straight and pointed rail sections at multiple points, place them on the second layer of rotating transverse support platform 313 of the special loading fixture 31, and adjust their position so that their center of gravity is as close as possible to the longitudinal center line of the flatcar. S36. Retract the flatcar folding boom crane 32 and the flatcar auxiliary outriggers 33 to the transport position in sequence; S37. Lock the second layer of the special loading fixture 31 to complete the loading.

[0037] S4. After the track maintenance window opens, the assembled rail components that have been loaded and reinforced will be transported to the construction site where the turnout needs to be replaced using the aforementioned train formations. To improve the utilization rate of the track maintenance window, after the window opens, the workers at the construction site will simultaneously carry out a series of preparatory work, such as cutting the old rails, removing the ground anchors, disconnecting the power grid, and dismantling the electrical system.

[0038] S5. After the train convoy arrives at the construction site, the convoy is moved and aligned according to the location of the turnouts to be replaced, ensuring that all lifting and welding points are within the working range of the corresponding crane booms after the convoy is parked. Then, the train is stopped to prepare for startup and the outriggers on the special flatcars for transporting each turnout are lowered.

[0039] S6. After the outriggers are lowered and preparations are completed, the folding boom cranes on the special flatcar for transporting turnout rail components are started, rotated, and extended to the position of the old turnout to be replaced on the adjacent line. The old turnout, which has been cut into sections, is lifted and placed between the two lines. During lifting, the loading for subsequent old turnout recovery must be considered; therefore, the lifting should proceed in the order of straight tip rail section, curved lower rail, and turnout center section. Furthermore, to ensure the safety and reliability of the on-site lifting operation, a small pre-lift should be performed as early as possible. After confirming that the lifting equipment is normal, normal lifting operations can then proceed.

[0040] S7. After completing the hoisting and placement of each section of the old turnout between the two lines, reset each folding boom crane, and then unlock the second layer of the tooling loaded on the special flatcar.

[0041] S8. Each folding boom crane sequentially lifts the straight-point rail section and the curved-strip rail assembly loaded on the second layer of the tooling from multiple points and places them at the designated position of the turnout to be replaced. Similarly, a small pre-lift is performed before lifting to confirm that the lifting equipment is normal before proceeding with the normal lifting operation. Before lowering, fine-tuning and alignment are also performed to ensure the accuracy of the new turnout's placement.

[0042] S9. Retract and reset the folding boom crane, unlock the first layer of the tooling on the special flatcar, and then lift the group of rail components of the turnout section to the designated position of the turnout to be replaced.

[0043] S10. After all three sections of the rail assembly are hoisted to the designated position of the turnout to be replaced, the previously removed electrical components are reinstalled, and the folding boom cranes and auxiliary outriggers of each flatcar are simultaneously retrieved, and the loading fixtures that were previously unlocked are locked.

[0044] S11. The parking train set is slightly shifted along its track to allow the containerized rail welding cranes at both ends of the train set to extend their welding machines to the welding joint. After the shift is complete, the rail welding crane is prepared to start up, and the auxiliary outriggers on the rail welding crane are lowered. While the train set is being repositioned, preparations for welding grinding are carried out simultaneously, and the straight section at the welding joint is bent.

[0045] S12. The booms of the containerized rail welding vehicles at both ends of the trainset rotate and extend outward to hoist the welding machine to the welding joint position. Simultaneously, flash welding and heat treatment are performed on the straight tracks before and after the turnout. After welding, the welded joints are ground and inspected for defects. After confirming that there are no abnormalities in the welding, the curved tracks of the turnout are connected by clamps. During the clamp installation, ground anchors are installed, electrical wiring is installed, fasteners are adjusted, and insulation bonding is performed simultaneously.

[0046] S13. The containerized rail welding vehicle 2 retracts its boom and outriggers in sequence and locks the vehicle assembly.

[0047] S14. By measuring parameters such as track gauge, direction, and level, the turnout is fine-tuned to ensure that the deviation between the relevant measurement results and the requirements of the construction operation technical plan is within the allowable range.

[0048] S15. While measuring and fine-tuning the turnouts, the outriggers of the dedicated flatcar for transporting turnout rail components in the train set are lowered and the loading fixtures are unlocked. Then, the folding boom crane on the flatcar is started to lift and retrieve the old turnout sections previously hoisted between the two tracks in the order of the turnout center section, the straight lower rail, and the point rail section. The turnout center section is placed on the first layer of the loading fixture, and the straight point rail and the straight lower rail are placed on the second layer. After the old turnout sections are hoisted, they are locked using the loading fixtures. Furthermore, the hoisting sequence for retrieving the old turnouts was already considered when the old turnout sections were hoisted between the two tracks.

[0049] S16. After the turnout fine-tuning and old turnout loading are completed, the construction site is inspected and confirmed to ensure that no personnel, machinery, or construction materials remain on site or encroach on the boundary. After inspection and confirmation, the cancellation procedures are completed, the track is returned to the pre-laying base, and the turnout replacement construction work is completed.

[0050] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0051] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. Specialized equipment for transporting and replacing high-speed railway turnouts in groups, characterized in that: include: Traction power unit, welding operation unit, and turnout transportation unit; The traction power unit includes two heavy railcars (1), which are respectively assembled at the beginning and end of the entire train; The welding operation unit includes two containerized rail welding vehicles (2), which are respectively grouped inside the traction power unit; each containerized rail welding vehicle (2) is equipped with a rail welding vehicle folding boom crane (23), a flash welding machine (24), rail welding vehicle auxiliary outriggers (22), generator container (21), and welding machine crane power unit (25); the rail welding vehicle folding boom crane (23) is used to move the flash welding machine (24) to the adjacent rail joint for welding operation; The turnout transport unit includes several dedicated turnout transport flatcars (3) set between the first and last two welding operation units; each dedicated turnout transport flatcar (3) is equipped with at least two flatcar folding boom cranes (32), flatcar auxiliary outriggers (33), dedicated loading fixtures (31), and flatcar crane power units (34); the flatcar folding boom cranes (32) are used for lifting turnout rail components, and the dedicated loading fixtures (31) are used for layered loading and fixing of pre-laid turnout rail components; The heavy railcar (1), container rail welding car (2) and special turnout transport flatcar (3) are connected by couplers to form an integrated operation group.

2. The special equipment for group transportation and replacement of high-speed railway turnouts according to claim 1, characterized in that: A large slewing bearing (321) is added to the lower part of the slewing device of the flatcar folding boom crane (32) on the dedicated turnout transport flatcar (3). A slewing reducer (322) is provided on the large slewing bearing (321). The base of the flatcar folding boom crane (32) is laterally changed relative to the frame through the large slewing bearing (321), so that the working range of the flatcar folding boom crane (32) covers the left or right adjacent line of the track.

3. The special equipment for group transportation and replacement of high-speed railway turnouts according to claim 2, characterized in that: The large slewing bearing (321) is replaced by a set of transverse guide rail mechanism, through which the transverse guide rail mechanism realizes the lateral movement and positioning of the flatcar folding boom crane (32) base.

4. The special equipment for group transportation and replacement of high-speed railway turnouts according to claim 1, characterized in that: The special loading fixture (31) includes at least two load-bearing structures: the first layer of rotating transverse support platform (312) is used to load the turnout section (5) of the rail assembly; the second layer of rotating transverse support platform (313) is used to load the straight tip rail section (4) and the curved lower rail (6) of the rail assembly; the rotating transverse support platform (312, 313) causes the rail assembly loaded on it to undergo the necessary transverse movement and rotation during transportation to adapt to the curved track and pass through.

5. The special equipment for group transportation and replacement of high-speed railway turnouts according to claim 4, characterized in that: The structure of the special loading fixture (31) includes a fixture slewing bearing (311) and a fixture support (314). The fixture slewing bearing (311) and the fixture support (314) are engaged with the chassis floor surface and can rotate around the slewing bearing on the chassis floor surface. A universal ball is installed at the lower part of the fixture support (314) to achieve rolling during fixture rotation while meeting the load-bearing requirements. The upper part of the fixture slewing bearing (311) and the fixture support (314) is provided with a first layer of slide rail (319) and a second layer of slide rail (320) from bottom to top. The lower part of the first layer of slide rail (319) is fixed to the fixture slewing bearing (311) and the fixture support (314). The first layer slide rail (319) is provided with a first layer rotating transverse support platform (312). The sliding plates on both sides of the first layer rotating transverse support platform (312) are slidably adapted to the slide groove on the first layer slide rail (319). The two ends of the first layer slide rail (319) are respectively provided with a long support positioning pin (316) and a short support positioning seat (317). One end of the second layer slide rail (320) is rotatably inserted into the long support positioning pin (316) through the pin hole. The other end of the second layer slide rail (320) is adapted to the single side of the short support positioning seat (317), so that the second layer slide rail (320) can rotate and move away around the long support positioning pin (316) in a specified direction. A drive cylinder (315) is installed between the long support positioning pin (316) and the second-layer slide rail (320). The drive cylinder can drive the second-layer slide rail (320) and the second-layer rotating transverse support (313) on it to rotate at a fixed angle, so as to facilitate the placement of rail components on the first-layer rotating transverse support (312). The second-layer slide rail (320) is provided with the second-layer rotating transverse support (313). The sliding plates on both sides of the second-layer rotating transverse support (313) are slidably adapted to the sliding groove on the second-layer slide rail (320). Locking devices (318) are provided on both the first-layer rotating transverse support (312) and the second-layer rotating transverse support (313).

6. The special equipment for group transportation and replacement of high-speed railway turnouts according to claim 1, characterized in that: The multiple flatcar folding boom cranes (32) on the dedicated turnout transport flatcar (3) are equipped with a synchronous control system; the synchronous control system includes a displacement sensor, a tension sensor and an angle encoder; the displacement sensor is used to collect displacement data of each lifting point and perform closed-loop control with displacement synchronization as the goal; the tension sensor is installed at the lifting point and is used to monitor the lifting force in real time and feed it back to the main control system for tension synchronization protection; the angle encoder is used to provide real-time feedback on the rotation angle of each flatcar folding boom crane (32) to achieve rotation synchronization control.

7. The special equipment for group transportation and replacement of high-speed railway turnouts according to claim 1, characterized in that: The rail welding vehicle folding boom crane (23) on the containerized rail welding vehicle (2) is also equipped with the synchronous control system and can realize the welding operation of adjacent rail joints within a maximum line spacing of 5.5m; the flatcar folding boom crane (32) on the special turnout transport flatcar (3) can realize the lifting operation of adjacent lines within a maximum line spacing of 5.5m.

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