Ballastless turnout beam and ballastless turnout replacement construction method

Abstract

The application discloses a ballastless turnout supporting beam and a ballastless turnout replacement construction method, and relates to the technical field of turnout replacement, which comprises a supporting beam base, a supporting beam sliding seat and a driving mechanism. The supporting beam base is used for being fixed on a longitudinal moving vehicle; the supporting beam sliding seat is slidably connected with the supporting beam base in a set direction, and the supporting beam sliding seat is used for supporting and positioning a ballastless turnout assembly; and the driving mechanism is connected with the supporting beam base and the supporting beam sliding seat simultaneously, and is used for driving the supporting beam sliding seat to slide in the set direction relative to the supporting beam base. The ballastless turnout replacement efficiency can be improved, and the passing property and safety of the ballastless turnout transportation can be improved.

Description

Technical Field

[0001] This invention relates to the field of turnout replacement technology, and more specifically, to a ballastless turnout support beam and a ballastless turnout replacement method. Background Technology

[0002] Currently, the replacement of existing railway ballastless turnouts generally adopts a method of transporting components separately and assembling them on-site. This means that the turnout's switches, frogs, connecting rails, and fastening systems are transported separately to the construction site, where they are then assembled, welded, fine-tuned, and poured within designated maintenance windows. This approach results in extremely long track closure times, and on-site working conditions (such as temperature, humidity, and measurement standards) are difficult to compare with factory environments. Assembly accuracy often relies on the experience of the workers, leading to significant quality variations. Although the engineering community has envisioned pre-assembling turnouts into whole units in a factory and transporting them to the replacement point to significantly shorten on-site work time, this idea has not been implemented. The bottleneck lies in the fact that transporting whole turnouts along existing lines requires dealing with obstacles and small-radius curves. The existing longitudinal transfer vehicles are equipped with fixed support beams, which cannot generate active lateral displacement. This prevents obstacle avoidance and the adjustment of the center of gravity to resist the risk of tipping over when navigating curves, making the whole-unit transportation plan lack basic safety feasibility. Therefore, despite its low efficiency, on-site installation of components remains the only feasible method at present. Summary of the Invention

[0003] The objectives of this invention include, for example, providing a ballastless turnout support beam and a ballastless turnout replacement method, which can improve the replacement efficiency of ballastless turnouts and enhance the passability and safety of ballastless turnout transportation.

[0004] The embodiments of the present invention can be implemented as follows: In a first aspect, the present invention provides a ballastless turnout support beam, comprising: Support beam base, support beam sliding seat and drive mechanism; The beam base is used to fix it on the longitudinal transfer vehicle; the beam sliding seat is slidably connected to the beam base in a set direction, and the beam sliding seat is used to support and position the ballastless turnout assembly; the drive mechanism is connected to both the beam base and the beam sliding seat, and is used to drive the beam sliding seat to slide relative to the beam base in the set direction.

[0005] In an optional embodiment, the support beam base includes a bottom shell and a plurality of omnidirectional balls, the bottom shell being used to fix it to the longitudinal transfer vehicle; the plurality of omnidirectional balls are all rotatably mounted in the inner cavity of the bottom shell, and each of the omnidirectional balls protrudes from the top of the bottom shell; the support beam sliding seat simultaneously contacts the plurality of omnidirectional balls to support the support beam sliding seat through the plurality of omnidirectional balls.

[0006] In an optional embodiment, the bottom of the support beam sliding seat is provided with multiple slide tracks, and multiple universal balls are respectively embedded in the corresponding slide tracks.

[0007] In an optional embodiment, the drive mechanism includes a handwheel, a first sprocket shaft, a first chain, a second sprocket shaft, a third sprocket shaft, and a second chain; the handwheel is connected to the first sprocket shaft; the first sprocket shaft, the second sprocket shaft, and the third sprocket shaft are all rotatably mounted on the support beam base, and the first sprocket shaft, the second sprocket shaft, and the third sprocket shaft are arranged in parallel intervals in a predetermined direction; the first chain simultaneously meshes with the first sprocket shaft and the second sprocket, and the second chain simultaneously meshes with the second sprocket shaft and the third sprocket shaft; The support beam sliding seat is fixedly connected to the second chain.

[0008] In an optional embodiment, the drive mechanism further includes a transverse plate; The second chain consists of two chains, which are arranged parallel to each other along the axial direction of the second sprocket shaft. The first chain is connected to the second sprocket shaft between the two second chains. The transverse plate is connected to both second chains, and the support beam sliding seat is fixed on the transverse plate.

[0009] In an optional embodiment, the drive mechanism further includes a locking component mounted on the support beam base. The locking component is used to lock or unlock the handwheel. When the locking component locks the handwheel, the handwheel is fixed relative to the support beam base. When the locking component unlocks the handwheel, the handwheel can rotate relative to the support beam base to drive the first sprocket shaft to rotate.

[0010] In an optional embodiment, the locking assembly includes a friction disc, a locking disc, an elastic element, and a locking bolt; the friction disc is sleeved and fixed outside the axle of the handwheel, the first sprocket axle is provided with a spline hole, the axle passes through the spline hole, and the axle meshes with the spline hole; the locking disc is sleeved outside the axle, the locking disc is slidably connected to the support beam base in a set direction, and the locking disc and the support beam base are relatively fixed relative to each other in the circumferential direction of the axle; the locking bolt is screwed into the support beam base, the inner end of the locking bolt is rotatably connected to the locking disc, and the locking bolt and the locking disc are relatively fixed relative to each other in the set direction; the elastic element is clamped between the support beam base and the locking disc to give the locking disc a tendency to move away from the friction disc; When the friction disc contacts the locking disc, the locking assembly is in a locked state for the handwheel; when the friction disc separates from the locking disc, the locking assembly releases the lock on the handwheel.

[0011] In an optional embodiment, the support beam base is provided with a stepped hole, the wall of the stepped hole is formed with a stepped surface, the stepped surface divides the stepped hole into a first hole segment and a second hole segment, the diameter of the first hole segment is smaller than the diameter of the second hole segment; the locking bolt is screwed to the first hole segment, the locking bolt extends out of the second hole segment and is rotatably connected to the locking disc; the elastic element is sleeved on the outside of the locking bolt and contacts the stepped surface.

[0012] Secondly, the present invention provides a method for replacing ballastless turnout tracks, applied to the ballastless turnout support beam described in any of the foregoing embodiments. This method includes the following steps: Step s100: Fix the ballastless turnout assembly using a fixing mechanism, so that the ballastless turnout assembly and the fixing mechanism cooperate to form a paving unit; Step s200: Install multiple longitudinal transfer cars on the railway track, install the support bases of multiple ballastless turnout support beams on the longitudinal transfer cars, place the unit to be paved on the support sliding seats of multiple ballastless turnout support beams, and use the multiple longitudinal transfer cars to transport the unit to be paved along the railway track. Step s300: During the transport process, the position of the corresponding support beam sliding seat in the set direction is adjusted according to the curvature of the railway track line, so as to drive the unit to be paved to move in the set direction.

[0013] In an optional implementation, in step s300, a distance sensor is used to acquire in real time the position of each of the support beam sliding seats relative to the corresponding support beam base in the set direction.

[0014] The beneficial effects of the embodiments of the present invention include, for example: This device, by installing a laterally sliding support beam on a longitudinal transfer vehicle and equipping it with a drive mechanism for active adjustment, enables the turnout components to have lateral displacement capabilities during transportation. This provides reliable technical support for the factory pre-assembly and overall transportation construction mode for the first time. Based on this device, all components of the ballastless turnout can be precisely assembled in the factory according to the design posture and locked into a single replacement unit by the fixing mechanism. The entire unit is then transported along the existing line to the replacement location by the longitudinal transfer vehicle. On-site, only placement and minor secondary adjustments are required to open the line, reducing the original track maintenance window of tens of hours to just a few hours. During transportation, when approaching obstacles such as signals or overhead contact line supports, the drive mechanism pushes the support beam to slide laterally, actively avoiding collisions and preventing stopping. When entering small-radius curves, adjusting the position of the sliding support towards the inside of the curve shifts the center of gravity of the replacement unit to a favorable position, effectively suppressing the overturning tendency caused by centrifugal force and ensuring safe and stable curve passage. Throughout the transportation process, the factory assembly precision of the turnouts is not affected by transportation vibrations and the on-site environment, resulting in higher final placement quality. At the same time, it fundamentally eliminates the problems of long-term closure and quality fluctuations caused by on-site assembly of loose parts. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a first-view structural schematic diagram of the ballastless turnout support beam provided in this embodiment; Figure 2 This is a second-view structural schematic diagram of the ballastless turnout support beam provided in this embodiment; Figure 3 This is a schematic diagram of the structure of the support beam base and drive mechanism provided in this embodiment; Figure 4 This is a schematic diagram of the structure of the support beam sliding seat provided in this embodiment; Figure 5 This is a schematic diagram of the locking assembly provided in this embodiment; Figure 6 A schematic diagram of the cooperative structure of the ballastless turnout support beam, longitudinal transfer vehicle and fixing mechanism provided in this embodiment; Figure 7 This is a schematic diagram of the application structure of the ballastless turnout support beam provided in this embodiment.

[0017] icon: 001-Longitudinal transfer car; 002-Batteryless turnout assembly; 003-Fixing mechanism; 100-Bridge support base; 110-Bottom shell; 111-First side plate; 1111-First hole; 1112-Second hole; 1113-Third hole; 1114-Step hole; 112-Second side plate; 113-Third side plate; 1131-Fourth hole; 1132-Fifth hole; 1133-Sixth hole; 114-Fourth side plate; 120- 200-Sliding support beam; 210-Lateral limit block; 220-Longitudinal limit block; 300-Drive mechanism; 310-Handwheel; 320-First sprocket shaft; 330-First chain; 340-Second sprocket shaft; 350-Third sprocket shaft; 360-Second chain; 370-Transverse plate; 380-Locking assembly; 381-Friction disc; 382-Locking disc; 383-Elastic element; 384-Locking bolt. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0022] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0023] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0024] Please refer to Figures 1-2 This embodiment provides a ballastless turnout support beam, which includes a support beam base 100, a support beam sliding seat 200, and a drive mechanism 300. The support beam base 100 is used to fix itself on a longitudinal transfer vehicle 001; the support beam sliding seat 200 is slidably connected to the support beam base 100 in a set direction, and the support beam sliding seat 200 is used to support and position the ballastless turnout assembly 002; the drive mechanism 300 is connected to both the support beam base 100 and the support beam sliding seat 200, and is used to drive the support beam sliding seat 200 to slide relative to the support beam base 100 in a set direction.

[0025] As described above, the working method of the ballastless turnout support beam provided in this embodiment is as follows: First, the various components of the ballastless turnout are assembled in the factory according to their designed positions, and the turnout assembly is locked into a single replacement unit using the fixing mechanism 003. This single replacement unit is then hoisted onto the support beam sliding seat 200 on the longitudinal transfer vehicle 001 and secured. The longitudinal transfer vehicle 001 travels along the existing track line, transporting the entire replacement unit to the location to be replaced. During the journey, when encountering obstacles such as signals or contact wire supports in front of or to the side of the track, the drive mechanism 300 extends or retracts, pushing the support beam sliding seat 200 to slide laterally relative to the support beam base 100, causing the entire replacement unit to shift away from the obstacle, thus avoiding it. The rear drive mechanism 300 reverses its action to reset the sliding seat and continue moving forward. When the line enters a small-radius curve section, the required lateral offset is calculated in advance based on the curve radius and travel speed. The drive mechanism 300 pushes the sliding seat to move the entire replacement section towards the inside of the curve, shifting the center of gravity of the entire section inward to balance the centrifugal force generated when turning. After exiting the curve section, the track is reset. After the longitudinal transfer vehicle 001 arrives at the replacement location, the drive mechanism 300 finely adjusts the lateral position of the sliding seat again to ensure that the entire replacement section is precisely aligned with the existing line's turnout reference. Then, the fixing mechanism 003 is released, and the entire replacement section is placed on the turnout base to complete the turnout replacement operation.

[0026] The following embodiments illustrate the details of the ballastless turnout support beam of this application by way of example.

[0027] Please refer to Figures 1-2In this embodiment, optionally, the ballastless turnout support beam includes a support beam base 100, a support beam sliding seat 200, and a drive mechanism 300. The support beam base 100 is used to mount on a longitudinal transfer vehicle 001, which can move along the railway track line. The support beam sliding seat 200 is slidably connected to the support beam base 100 in a set direction. The drive mechanism 300 is connected to both the support beam base 100 and the support beam sliding seat 200, and can drive the support beam sliding seat 200 to reciprocate relative to the support beam base 100. The support beam sliding seat 200 is used to support the ballastless turnout assembly 002 and the ballastless turnout fixing mechanism 003 forming the track replacement unit.

[0028] Please refer to Figures 1-3 Optionally, the support beam base 100 includes a base shell 110 and multiple omnidirectional balls 120. The base shell 110 is used to fix it to the longitudinal transfer vehicle 001; the multiple omnidirectional balls 120 are all rotatably installed in the inner cavity of the base shell 110, and each omnidirectional ball 120 protrudes from the top of the base shell 110; the support beam sliding seat 200 simultaneously contacts the multiple omnidirectional balls 120 to support the support beam sliding seat 200. The support beam sliding seat 200 is supported by the cooperation of the multiple omnidirectional balls 120. The support beam sliding seat 200 and the omnidirectional balls 120 are in rolling contact, resulting in low friction, flexible sliding, and resistance to wear and failure.

[0029] Optionally, the bottom shell 110 has a top opening and a bottom opening that are arranged opposite each other. The design of the top opening and the bottom opening facilitates the disassembly and assembly of the internal components of the bottom shell 110 and makes processing and manufacturing convenient. In addition, the bottom shell 110 is a hollow shell, which consumes less material, is lightweight, and has low cost.

[0030] Optionally, the number of omnidirectional balls 120 can be four, and the four omnidirectional balls 120 can be distributed at the four corners of the same rectangle. Furthermore, each omnidirectional ball 120 can be fixed inside the base shell 110 by a mounting bracket, which improves the stability of the omnidirectional ball 120's position. The mounting bracket can be fixed to the base shell 110 by welding or other methods.

[0031] It should be understood that the base shell 110 and the longitudinal transfer vehicle 001 can be fixed with bolts. For example, a lug can be provided on the base shell 110, and a fixing hole can be provided on the lug. After the bolt passes through and is fixed, it can be screwed into the threaded hole at the corresponding position on the longitudinal transfer vehicle 001. The bolted connection facilitates assembly.

[0032] Please refer to Figure 3Furthermore, the bottom shell 110 can be configured as an elongated strip, and the bottom shell 110 has a first side plate 111, a second side plate 112, a third side plate 113, and a fourth side plate 114 connected end to end in sequence. The first side plate 111 and the third side plate 113 are opposite to each other, and the second side plate 112 and the fourth side plate 114 are opposite to each other. The first side plate 111 is provided with a first hole 1111, a second hole 1112, and a third hole 1113 in sequence, and the third side plate 113 is provided with a fourth hole 1131, a fifth hole 1132, and a sixth hole 1133 in sequence. The first hole 1111 and the fourth hole 1131 are coaxial, the second hole 1112 and the fifth hole 1132 are coaxial, and the third hole 1113 and the sixth hole 1133 are coaxial.

[0033] It should be understood that the first hole 1111, the second hole 1112, the third hole 1113, the fourth hole 1131, the fifth hole 1132 and the sixth hole 1133 can all be set as circular through holes.

[0034] Furthermore, a stepped hole 1114 is provided on the first side plate 111. There can be multiple stepped holes 1114, all evenly spaced around the axis of the first hole 1111. The hole wall of each stepped hole 1114 forms an annular stepped surface, dividing the stepped hole 1114 into a first hole segment 1111 and a second hole segment 1112. The diameter of the first hole segment 1111 is smaller than the diameter of the second hole segment 1112. The first hole segment 1111 is located on the side of the second hole segment 1112 away from the third side plate 113; that is, the port of the second hole segment 1112 away from the first hole segment 1111 connects to the inner cavity of the bottom shell 110.

[0035] It should be understood that there are multiple stepped holes 1114, and this embodiment does not specifically limit the number.

[0036] Please refer to Figure 1 and Figure 4 In this embodiment, optionally, the support beam sliding seat 200 is elongated and has a bottom surface and a top surface. The bottom surface can be provided with sliding tracks, and the number of tracks can be multiple. For example, in this embodiment, two tracks are used, arranged in parallel and spaced apart. Obviously, the number of tracks can also be other, but these are not listed here. When the support beam sliding seat 200 is installed on the support beam base 100, the two tracks respectively cooperate with four universal balls 120. That is, two universal balls 120 can correspond to one track. The cooperation between the tracks and the universal balls 120 forms a guiding mechanism, making the sliding of the support beam sliding seat 200 more stable and reliable.

[0037] Meanwhile, the top surface of the beam sliding seat 200 is provided with transverse limiting blocks 210 and longitudinal limiting blocks 220. There can be two transverse limiting blocks 210, spaced apart along the length of the beam sliding seat 200, which can restrict the lateral sliding of the replacement unit. There are four longitudinal limiting blocks 220, arranged in groups of two, along the length of the beam sliding seat 200. The two longitudinal limiting blocks 220 in the same group are spaced apart along the width of the beam sliding seat 200. Through the cooperation of the two groups of longitudinal limiting blocks 220, the forward and backward sliding of the replacement unit can be restricted. In this way, when the replacement unit is placed on the beam sliding seat 200, the relative position of the replacement unit and the beam sliding seat 200 is stable, ensuring safe and reliable operation.

[0038] It should be understood that in other embodiments, the positions of the lateral limiting block 210 and the longitudinal limiting block 220 can be adjusted as needed to adapt to the positioning of different types of replacement units.

[0039] It should be understood that both the support beam base 100 and the support beam sliding seat 200 can be made of metal, resulting in high structural strength.

[0040] Please refer to Figure 3 and Figure 5 In this embodiment, optionally, the drive mechanism 300 includes a handwheel 310, a first sprocket shaft 320, a first chain 330, a second sprocket shaft 340, a third sprocket shaft 350, a second chain 360, a transverse plate 370, and a locking assembly 380. The axle of the handwheel 310 is fixedly connected to the first sprocket shaft 320, and rotating the handwheel 310 can drive the first sprocket shaft 320 to rotate. The first sprocket shaft 320, the second sprocket shaft 340, and the third sprocket shaft 350 are all rotatably mounted on the support beam base 100, and the first sprocket shaft 320, the second sprocket shaft 340, and the third sprocket shaft 350 are arranged in parallel intervals in a set direction. The first chain 330 engages simultaneously with the first sprocket shaft 320 and the second sprocket, and the second chain 360 engages simultaneously with the second sprocket shaft 340 and the third sprocket shaft 350. A transverse plate 370 is fixedly connected to the second chain 360, and the support beam sliding seat 200 is fixedly connected to the transverse plate 370 on the second chain 360. A locking assembly 380 is mounted on the support beam base 100. The locking assembly 380 is used to lock or unlock the handwheel 310. When the locking assembly 380 locks the handwheel 310, the handwheel 310 is relatively fixed to the support beam base 100. When the locking assembly 380 unlocks the handwheel 310, the handwheel 310 can rotate relative to the support beam base 100 to drive the first sprocket shaft 320 to rotate.

[0041] Specifically, the first sprocket shaft 320 is provided with a spline hole, and the axle of the handwheel 310 passes through the spline hole, engaging with it. Simultaneously, the axle of the handwheel 310 passes through both the first hole 1111 and the fourth hole 1131, and is rotatably connected to both holes 1111 and 1131. The second sprocket shaft 340 is rotatably inserted into the second hole 1112 and the fifth hole 1132, and the third sprocket shaft 350 is rotatably inserted into the third hole 1113 and the sixth hole 1133. With this design, when the handwheel 310 is turned, the first sprocket shaft 320 rotates, which drives the first chain 330 to rotate. The rotation of the first chain 330 drives the second sprocket shaft 340 to rotate. Supported by the second sprocket shaft 340 and the third sprocket shaft 350, the second chain 360 can rotate. The second chain 360 has a straight section located between the second sprocket shaft 340 and the third sprocket shaft 350. The straight section extends in a set direction. The transverse plate 370 is installed on the straight section. The transverse plate 370 can slide back and forth in the set direction, ultimately driving the support beam sliding seat 200 to slide.

[0042] It should be understood that when it is necessary to turn the handwheel 310 to adjust the position of the support beam sliding seat 200, the locking component 380 should first be in the unlocked state so that the handwheel 310 can rotate normally. After the position of the support beam sliding seat 200 is adjusted, in order to prevent the handwheel 310 from being accidentally operated and changing the position of the support beam sliding seat 200, the locking component 380 is adjusted to the locked state, so that the handwheel 310 cannot drive the first sprocket shaft 320 to rotate, thereby improving safety.

[0043] It should be understood that bearings can be installed in the first hole 1111, the second hole 1112, the third hole 1113 and the fourth hole 1131, which can improve the rotational flexibility of the handwheel 310, the second sprocket shaft 340 and the third sprocket shaft 350.

[0044] Please refer to Figure 5Optionally, the locking assembly 380 includes a friction disc 381, a locking disc 382, ​​an elastic element 383, and a locking bolt 384. The friction disc 381 is sleeved and fixed to the outside of the axle of the handwheel 310. The friction disc 381 and the axle can be connected by a spline, and the two can rotate together. The locking disc 382 is sleeved on the outside of the axle, and the locking disc 382 is rotatably engaged with the axle, that is, there is an annular gap between the locking disc 382 and the axle. Furthermore, the locking disc 382 is slidably connected to the support beam base 100 in a set direction, and the locking disc 382 and the support beam base 100 are relatively fixed in the circumferential direction of the axle. That is, the locking disc 382 can slide along the axle, but cannot rotate relative to the support beam base 100. The number of locking bolts 384 is equal to the number of stepped holes 1114. One locking bolt 384 can be inserted into each stepped hole 1114. Specifically, the locking bolt 384 enters from the first hole 1111 and extends out from the second hole 1112. The locking bolt 384 is threadedly connected to the first hole 1111. After the locking bolt 384 extends out of the second hole 1112, the inner end of the locking bolt 384 is rotatably connected to the locking disc 382 through a bearing, so that the locking bolt 384 and the locking disc 382 are relatively fixed in a set direction. The number of elastic elements 383 is equal to and corresponds one-to-one with the number of locking bolts 384. The elastic element 383 can be a spring. The elastic element 383 is sleeved on the outside of the locking bolts 384. One end of the elastic element 383 contacts the stepped surface, and the other end contacts the locking disc 382. The elastic element 383 is in a compressed state and is clamped between the support beam base 100 and the locking disc 382 to make the locking disc 382 tend to move away from the friction disc 381.

[0045] It should be understood that the side of the locking disc 382 facing the friction disc 381 is a friction surface, and correspondingly, the side of the friction disc 381 facing the locking disc 382 is also a friction surface. When the friction disc 381 and the locking disc 382 are in contact, that is, when the two friction surfaces are in contact, the locking assembly 380 is in the state of locking the handwheel 310. Similarly, when the friction disc 381 and the locking disc 382 are separated, the locking assembly 380 releases the lock on the handwheel 310. During operation, by turning the locking bolt 384, the locking disc 382 can be brought closer to the friction disc 381, so that the two are in contact. When the locking bolt 384 is turned in the opposite direction, the locking disc 382 can be moved away from the friction disc 381, and the elastic element 383 can provide the elastic force for the locking disc 382 to move away from the friction disc 381, making it easier for the locking disc 382 to reset. Furthermore, the elastic element 383 always provides elastic force, which can maintain the stability of the locking disc 382 and also prevent the locking bolt 384 from rotating freely.

[0046] The ballastless turnout support beam provided in this embodiment has a laterally slidable support beam sliding seat 200 on the longitudinal transfer vehicle 001 and is equipped with a drive mechanism 300 for active adjustment, so that the turnout component has lateral displacement capability during transportation, thus providing reliable technical support for the construction mode of factory pre-assembly and overall transportation for the first time. Based on this device, all components of the ballastless turnout can be precisely assembled in the factory according to the designed posture and locked into a single replacement unit by the fixing mechanism 003. Then, the longitudinal transfer vehicle 001 transports the entire unit along the existing line to the replacement location. On-site, only placement and minor secondary adjustments are required to open the line, reducing the original track maintenance window of tens of hours to just a few hours. During transport, when approaching obstacles such as signals or overhead contact line supports, the drive mechanism 300 pushes the support beam sliding seat 200 to cause the entire replacement unit to shift laterally, achieving active avoidance and preventing collisions and stops. When entering small-radius curves, adjusting the sliding seat position towards the inside of the curve shifts the center of gravity of the entire replacement unit to a favorable position, effectively suppressing the overturning tendency caused by centrifugal force and ensuring safe and stable curve passage. Throughout the entire transportation process, the factory assembly precision of the turnout is unaffected by transportation vibrations and the on-site environment, resulting in higher final placement quality. This also fundamentally eliminates the long-term closure and quality fluctuation problems caused by on-site assembly of disassembled parts.

[0047] Please refer to Figures 1-7 This embodiment also provides a method for replacing ballastless turnout tracks, applied to the ballastless turnout support beams of the above embodiments. This method includes the following steps: Step s100: Fix the ballastless turnout assembly 002 using the fixing mechanism 003, so that the ballastless turnout assembly 002 and the fixing mechanism 003 cooperate to form the unit to be paved; Step s200: Install multiple longitudinal transfer cars 001 on the railway track, install the support base 100 of multiple ballastless turnout support beams on the longitudinal transfer cars 001, place the unit to be paved on the support sliding seat 200 of multiple ballastless turnout support beams, and use multiple longitudinal transfer cars 001 to transport the unit to be paved along the railway track. Step s300: During the transport process, the position of the corresponding support beam sliding seat 200 in the set direction is adjusted according to the curvature of the railway track line, so as to drive the unit to be paved to move in the set direction. During the adjustment process, the center of gravity of the entire unit to be paved is brought as close as possible to the curved track line, so that the distance between the two gradually decreases, thereby reducing the probability of rollover.

[0048] Optionally, in step s300, the position of each support beam sliding seat 200 relative to the corresponding support beam base 100 in a set direction is obtained in real time using a distance sensor. Obtaining the position of the support beam sliding seat 200 in real time through the distance sensor facilitates the coordinated use of multiple support beam sliding seats 200 and improves stability.

[0049] It should be understood that the dimensions of multiple ballastless turnout support beams can be set to be different, thereby matching position adjustments at different distances.

[0050] To facilitate understanding of how the multiple ballastless turnout support beams in this embodiment coordinate to adjust the position of the unit to be replaced, an example is given of the track line bending to the right.

[0051] During transportation, multiple longitudinal transfer vehicles 001 carry the ballastless turnout support beam and the replacement unit along the extension direction of the track. When encountering a right-hand curve, as the replacement unit moves further into the curve, its center of gravity gradually shifts to the right, becoming located on the right side of the track and gradually moving away from it. At this point, without attitude adjustment, there is a risk of the replacement unit tipping over to the right. Therefore, after the replacement unit enters the curve, the drive mechanism 300 can be used to slide the support beam sliding seat 200 in a set direction, which is basically consistent with the width direction of the replacement unit, i.e., basically consistent with the width direction of the track. This causes the replacement unit to move to the left as a whole, bringing its center of gravity closer to the track and reducing the risk of tipping over.

[0052] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A ballastless turnout support beam, characterized in that, include: Support beam base (100), support beam sliding seat (200) and drive mechanism (300); The beam base (100) is used to fix it on the longitudinal transfer vehicle (001); the beam sliding seat (200) is slidably connected to the beam base (100) in a set direction, and the beam sliding seat (200) is used to support and position the ballastless turnout assembly (002); the drive mechanism (300) is connected to both the beam base (100) and the beam sliding seat (200) and is used to drive the beam sliding seat (200) to slide relative to the beam base (100) in the set direction.

2. The ballastless turnout support beam according to claim 1, characterized in that: The support beam base (100) includes a bottom shell (110) and a plurality of universal balls (120). The bottom shell (110) is used to fix it on the longitudinal transfer vehicle (001). The plurality of universal balls (120) are rotatably installed in the inner cavity of the bottom shell (110), and each universal ball (120) protrudes from the top of the bottom shell (110). The support beam sliding seat (200) simultaneously contacts the plurality of universal balls (120) to support the support beam sliding seat (200) through the plurality of universal balls (120).

3. The ballastless turnout support beam according to claim 2, characterized in that: The bottom of the support beam sliding seat (200) is provided with multiple slide tracks, and multiple universal balls (120) are respectively embedded in the corresponding slide tracks.

4. The ballastless turnout support beam according to any one of claims 1-3, characterized in that: The drive mechanism (300) includes a handwheel (310), a first sprocket shaft (320), a first chain (330), a second sprocket shaft (340), a third sprocket shaft (350), and a second chain (360); the handwheel (310) is connected to the first sprocket shaft (320); the first sprocket shaft (320), the second sprocket shaft (340), and the third sprocket shaft (350) are rotatably mounted on the support beam base (100), and the first sprocket shaft (320), the second sprocket shaft (340), and the third sprocket shaft (350) are arranged in parallel intervals in the set direction; the first chain (330) simultaneously meshes with the first sprocket shaft (320) and the second sprocket, and the second chain (360) simultaneously meshes with the second sprocket shaft (340) and the third sprocket shaft (350); The support beam sliding seat (200) is fixedly connected to the second chain (360).

5. The ballastless turnout support beam according to claim 4, characterized in that: The drive mechanism (300) also includes a transverse plate (370); There are two second chains (360), which are arranged parallel to each other along the axial direction of the second sprocket shaft (340). The first chain (330) is connected to the second sprocket shaft (340) between the two second chains (360). The transverse plate (370) is connected to both second chains (360) at the same time, and the support beam sliding seat (200) is fixed on the transverse plate (370).

6. The ballastless turnout support beam according to claim 4, characterized in that: The drive mechanism (300) further includes a locking component (380) mounted on the support beam base (100). The locking component (380) is used to lock or unlock the handwheel (310). When the locking component (380) locks the handwheel (310), the handwheel (310) is fixed relative to the support beam base (100). When the locking component (380) unlocks the handwheel (310), the handwheel (310) can rotate relative to the support beam base (100) to drive the first sprocket shaft (320) to rotate.

7. The ballastless turnout support beam according to claim 6, characterized in that: The locking assembly (380) includes a friction disc (381), a locking disc (382), an elastic element (383), and a locking bolt (384); the friction disc (381) is sleeved and fixed outside the axle of the handwheel (310), the first sprocket shaft (320) is provided with a spline hole, the axle passes through the spline hole, and the axle meshes with the spline hole; the locking disc (382) is sleeved outside the axle, and the locking disc (382) is slidably connected to the support beam base (100) in the set direction. The support beam base (100) is fixed relative to the wheel axle in the circumferential direction; the locking bolt (384) is screwed to the support beam base (100), the inner end of the locking bolt (384) is rotatably connected to the locking disc (382), and the locking bolt (384) and the locking disc (382) are fixed relative to each other in the set direction; the elastic element (383) is clamped between the support beam base (100) and the locking disc (382) to make the locking disc (382) tend to move away from the friction disc (381); When the friction disc (381) contacts the locking disc (382), the locking assembly (380) is in a locked state of the handwheel (310); when the friction disc (381) separates from the locking disc (382), the locking assembly (380) releases the lock on the handwheel (310).

8. The ballastless turnout support beam according to claim 7, characterized in that: The support beam base (100) is provided with a stepped hole (1114), the wall of the stepped hole (1114) is formed with a stepped surface, the stepped surface divides the stepped hole (1114) into a first hole (1111) segment and a second hole (1112) segment, the diameter of the first hole (1111) segment is smaller than the diameter of the second hole (1112) segment; the locking bolt (384) is screwed to the first hole (1111) segment, the locking bolt (384) extends out of the second hole (1112) segment and is rotatably connected to the locking disc (382); the elastic element (383) is sleeved on the locking bolt (384) and contacts the stepped surface.

9. A method for replacing ballastless turnout tracks, characterized in that, The method for using the ballastless turnout support beam according to any one of claims 1-8 includes the following steps: Step s100: Fix the ballastless turnout assembly (002) using the fixing mechanism (003) so that the ballastless turnout assembly (002) and the fixing mechanism (003) cooperate to form the paving unit; Step s200: Install multiple longitudinal transfer cars (001) on the railway track, install the support bases (100) of multiple ballastless turnout support beams on the longitudinal transfer cars (001), place the unit to be paved on the support sliding seats (200) of multiple ballastless turnout support beams, and use the multiple longitudinal transfer cars (001) to transport the unit to be paved along the railway track. Step s300: During the transport process, the position of the corresponding support beam sliding seat (200) in the set direction is adjusted according to the curvature of the railway track line, so as to drive the unit to be paved to move in the set direction.

10. The ballastless turnout replacement method according to claim 9, characterized in that: In step s300, the position of each of the support beam sliding seats (200) relative to the corresponding support beam base (100) in the set direction is obtained in real time using a distance sensor.

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