Combined sliding platform for construction of cable-stayed bridge with combined beam

Abstract

The present application relates to the field of combined beam cable-stayed bridge construction, and relates to a combined sliding platform for combined beam cable-stayed bridge construction, comprising a water sliding track, a land sliding track, a towing system and a jacking moving mechanism, the towing system comprising a winch, a pulley block and a trolley, the bottom of the trolley being provided with a mounting groove, the jacking moving mechanism comprising a mounting seat vertically slidingly installed in the mounting groove, a moving wheel being rotatably installed on the mounting seat, the moving wheel being capable of extending out of the mounting groove and being in contact with the water sliding track and the land sliding track respectively, and a driving mechanism being installed in the trolley and being used for driving the mounting seat to move. The driving mechanism drives the mounting seat to drive the moving wheel to extend out or retract, the moving wheel being capable of being in contact with the water sliding track and the land sliding track respectively, and the overall support height of the trolley being capable of being changed, when vertical misalignment is formed between the water and land sliding tracks due to settlement, the support elevation of the trolley being capable of being adjusted to adapt to the misalignment height difference.

Description

Technical Field

[0001] This invention relates to the field of construction of cable-stayed bridges with combined beams, and more particularly to a combined sliding platform for the construction of cable-stayed bridges with combined beams. Background Technology

[0002] During the construction of long-span steel-concrete composite cable-stayed bridges, when the pylons are located on the shore, some main girder segments are situated at the water-land boundary above the land, making it impossible for crane vessels to directly lift the steel beams to the installation position directly below. Existing projects typically employ a combined sliding platform, which mainly consists of an underwater steel pipe sliding support, a land-based concrete sliding track, and a towing system. The towing system drives trolleys to support the steel beams, enabling the steel beams to be towed and slid into place from the underwater sliding track to the land-based sliding track.

[0003] In related technologies, a combined sliding platform for cable-stayed bridge construction includes an underwater steel pipe sliding support, a land-based concrete sliding track, and a towing system. The underwater steel pipe sliding support consists of steel pipe piles driven into the riverbed, longitudinal and transverse connecting rods, transverse distribution beams, and longitudinal sliding track beams. The steel pipe piles are assembled into a frame through the longitudinal and transverse connecting rods. The transverse distribution beams and longitudinal sliding track beams are arranged obliquely near the riverbank, and a stainless steel plate sliding track is laid on the top surface of the longitudinal sliding track beam. The land-based concrete sliding track includes a strip foundation and a sliding seat. A pad is set at the bottom of the strip foundation, and a pre-embedded steel plate is set on the top surface of the sliding seat and edged with angle steel. A stainless steel plate sliding track is also laid on the pre-embedded steel plate. An expansion joint is set between the two sections of the sliding track and filled with cork boards. The towing system includes a winch, a pulley block, and a trolley. The bottom of the trolley is equipped with a polytetrafluoroethylene sliding plate, and grease is applied between the sliding plate and the stainless steel plate sliding track. The winch, in conjunction with the pulley block, drives the trolley to support the sliding of the steel beam.

[0004] Regarding the aforementioned technologies, the steel pipe piles of the underwater steel pipe sliding support are supported on the soft soil foundation of the riverbed. Under the load of the steel beam, the soil at the pile tip is prone to compression, leading to settlement of the underwater slideway and the formation of uneven vertical misalignment at the expansion joint of the water-land slideway. When the trolley passes through the expansion joint, the rigid trolley cannot adapt to the height difference of the misalignment, and the bottom polytetrafluoroethylene sliding plate is easily crushed and damaged, causing the trolley to jam and the steel beam to deviate, affecting the safety and construction efficiency of the steel beam towing operation. Summary of the Invention

[0005] To address the issues affecting the safety and construction efficiency of steel beam towing operations, this invention provides a combined sliding platform for the construction of cable-stayed bridges with combined beams.

[0006] The present invention provides a combined sliding platform for the construction of cable-stayed bridges with beams, which adopts the following technical solution: A combined sliding platform for the construction of a cable-stayed bridge includes a water slide, a land slide, a towing system, and a lifting and moving mechanism. The towing system includes a winch, a pulley block, and a trolley. The bottom of the trolley has an installation groove. The lifting and moving mechanism includes a mounting seat that is vertically slidably installed in the mounting groove. A moving wheel is rotatably installed on the mounting seat. The moving wheel can extend out of the mounting groove and contact the water slide and the land slide respectively. The trolley is equipped with a drive mechanism for moving the mounting seat.

[0007] Preferably, the driving mechanism includes a driving plate that passes through the side wall of the forward end of the trolley. The bottom of the driving plate is flush with the bottom of the trolley. The driving plate can contact the staggered end of the land slide. A transmission component is installed in the trolley. When the driving plate abuts against the land slide and moves relative to the trolley, the driving plate drives the mounting base to move through the transmission component.

[0008] Preferably, the mounting base includes a mounting plate slidably mounted on the inner wall of the mounting groove and a connecting seat for rotating the movable wheel. The connecting seat is rotatably connected to the mounting plate, and a torsion spring is sleeved on the rotating shaft mounted in the connecting seat.

[0009] Preferably, a cleaning plate located at the front end of the moving wheel is installed at the bottom of the connecting seat, and the cleaning plate contacts the water slide when the moving wheel contacts the water slide.

[0010] Preferably, the bottom of the connecting seat is provided with a cleaning groove, and a first spring is fixedly connected to the inner top surface of the cleaning groove, and the first spring is fixedly connected to the cleaning plate.

[0011] Preferably, limit plates are installed on both sides of the trolley, and the water slide is located between the two limit plates.

[0012] Preferably, guide rods are fixedly connected to both sides of the trolley, the guide rods pass through the limiting plate, and a moving part corresponding to the limiting plate is installed in the trolley. The drive plate can drive the limiting plate to move through the moving part.

[0013] Preferably, the transmission component includes a transmission shaft and a threaded cylinder rotatably mounted in the mounting groove. The transmission shaft and the threaded cylinder are connected by a conveyor belt. The bottom of the threaded cylinder is threadedly connected to a drive screw that is fixedly connected to the mounting base. A rack is fixedly connected to the drive plate, and a gear that meshes with the rack is fixedly connected to the transmission shaft.

[0014] Preferably, the moving component includes a movable screw rotatably mounted on a trolley, the movable screw being threadedly connected to a limiting plate, the movable screw extending into a mounting groove, and being connected to a drive shaft via a bevel gear set.

[0015] Preferably, multiple sets of the lifting and moving mechanisms are provided along the moving direction of the trolley and the width direction of the water slide.

[0016] In summary, the present invention has at least the following beneficial technical effects: 1. By installing a vertically sliding mounting base and movable wheels in the mounting groove at the bottom of the trolley, the mounting base is driven by a drive mechanism to extend or retract the movable wheels. The movable wheels can contact the water slide and the land slide respectively, which can change the overall support height of the trolley. When vertical misalignment occurs between the water slide and the land slide due to settlement, the support elevation of the trolley can be adjusted to adapt to the height difference of the misalignment, avoiding direct hard contact between the PTFE sliding plate at the bottom of the trolley and the misalignment steps, reducing the phenomenon of sliding plate crushing and damaging the slide, and improving the trolley's ability to cross expansion joints; 2. The drive plate is arranged on the side wall of the forward end of the trolley and can abut against the misaligned end of the land slide. Utilizing the mechanical energy of the trolley moving forward, the land slide forms a blockage on the drive plate, causing the drive plate to move relative to the trolley. Then, the power is output through the transmission component to drive the mounting base to move, simplifying the mechanism layout and adapting to the harsh working environment of the water construction site. 3. The connecting seat is rotatably connected to the mounting plate, and a torsion spring is fitted on the rotating shaft of the connecting seat, giving the connecting seat that carries the movable wheel the ability to self-adapt to small angles. When there are local undulations on the slide surface or small angles at the joints, the movable wheel can adaptively deflect with the connecting seat, ensuring effective contact between the movable wheel and the slide. The torsion spring provides a restoring torque, allowing the connecting seat to automatically return to its original position after disengaging from a protruding position, reducing the probability of the movable wheel jamming or being damaged by single-point impact. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the combined sliding platform used for the construction of a combined beam cable-stayed bridge according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the underwater steel pipe sliding support according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the trolley structure according to an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the internal structure of the trolley according to an embodiment of the present invention.

[0021] Figure 5 This is a bottom view of the trolley structure according to an embodiment of the present invention.

[0022] Figure 6 This is a schematic diagram of the lifting and moving mechanism according to an embodiment of the present invention.

[0023] Figure 7 This is a schematic diagram of the locking mechanism according to an embodiment of the present invention.

[0024] Figure 8 This is a schematic diagram of the connecting rod according to an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached drawings: 1. Underwater steel pipe sliding support; 11. Steel pipe pile; 12. Transverse distribution beam; 13. Water slide; 2. Land concrete slide; 21. Strip foundation; 22. Land slide; 3. Towing system; 31. Winch; 32. Pulley block; 33. Trolley; 34. Limiting plate; 35. Guide rod; 36. Limiting block; 37. Third spring; 38. Push block; 4. Lifting and moving mechanism; 41. Mounting base; 41 1. Mounting plate; 412. Connecting seat; 42. Moving wheel; 43. Cleaning plate; 44. First spring; 5. Drive mechanism; 51. Drive plate; 52. Transmission shaft; 521. Gear; 53. Threaded cylinder; 54. Drive screw; 55. Rack; 56. Moving screw; 57. Second spring; 58. Connecting rod; 581. First tooth; 6. Locking mechanism; 61. Locking block; 62. Locking spring; 63. L-shaped stop bar. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1 - Appendix Figure 8 The present invention will be described in further detail below.

[0027] This invention discloses a combined sliding platform for the construction of cable-stayed bridges with combined beams. (Refer to...) Figures 1 to 5 The system includes an underwater steel pipe sliding support 1, a land-based concrete slide 2, a towing system 3, and a lifting and moving mechanism 4. The underwater steel pipe sliding support 1 includes steel pipe piles 11 driven into the riverbed, a transverse distribution beam 12, and a longitudinal slide beam, which is the water slide 13. The land-based concrete slide 2 includes a strip foundation 21 and a land slide 22. The towing system 3 includes a winch 31, a pulley block 32, and a trolley 33. The bottom of the trolley 33 has an installation groove. The lifting and moving mechanism 4 includes a mounting seat 41 that is vertically slidably installed in the mounting groove. A moving wheel 42 is rotatably installed on the mounting seat 41, and the moving wheel 42 can slide from the mounting groove. The trolley 33 extends and contacts the water slide 13 and the land slide 22 respectively. A drive mechanism 5 is installed in the trolley 33 to drive the mounting base 41 to move. The drive mechanism 5 drives the mounting base 41 to extend or retract the moving wheel 42. The moving wheel 42 can contact the water slide 13 and the land slide 22 respectively, which can change the overall support height of the trolley 33. When the water slide and the land slide form a vertical misalignment due to settlement, the support elevation of the trolley 33 can be adjusted to adapt to the height difference of the misalignment, avoid the polytetrafluoroethylene sliding plate at the bottom of the trolley 33 directly hitting the misalignment step, reduce the phenomenon of the sliding plate crushing and gnawing on the slide, and improve the passage capacity of the trolley 33 across the expansion joint.

[0028] Multiple sets of lifting and moving mechanisms 4 are arranged along the moving direction of the trolley 33 and the width direction of the water slide 13. Multiple sets of moving wheels 42 participate in bearing and lifting simultaneously, and the load can be distributed to each lifting and moving mechanism 4, reducing the stress load on a single set of moving wheels 42 and mounting base 41. Multiple sets of synchronous lifting and lowering can realize the overall horizontal lifting of the trolley 33, prevent the trolley 33 from tilting or tilting locally, avoid the upper steel beam from generating additional overturning moment, and improve the safety performance of cross-joint operations.

[0029] Reference Figures 1 to 4 The drive mechanism 5 includes a drive plate 51 that passes through the side wall of the forward end of the trolley 33. The bottom of the drive plate 51 is flush with the bottom of the trolley 33. The drive plate 51 can contact the misaligned end of the land slide 22. A transmission component is installed in the trolley 33. When the drive plate 51 abuts against the land slide 22 and moves relative to the trolley 33, the drive plate 51 drives the mounting seat 41 to move through the transmission component. The drive plate 51 is arranged on the side wall of the forward end of the trolley 33 and can abut against the misaligned end of the land slide 22. Using the mechanical energy of the trolley 33 moving forward, the land slide 22 forms a block on the drive plate 51, causing the drive plate 51 to move relative to the trolley. Then, the power is output through the transmission component to drive the mounting seat 41 to move. The whole triggering method is a pure mechanical structure and does not require external power sources such as motors and hydraulic systems. The trolley 33 can automatically trigger the lifting action when it approaches the misaligned joint, which simplifies the mechanism layout and is suitable for the harsh working environment of the water construction site.

[0030] Reference Figures 4 to 6 The transmission components include a drive shaft 52 and a threaded cylinder 53 rotatably mounted in the mounting slot. The drive shaft 52 and the threaded cylinder 53 are connected by a conveyor belt. The bottom of the threaded cylinder 53 is threadedly connected to a drive screw 54 fixedly connected to the mounting base 41. A rack 55 is fixedly connected to the drive plate 51, and a gear 521 meshing with the rack 55 is fixedly connected to the drive shaft 52. The horizontal linear displacement of the drive plate 51 is converted into the rotational motion of the drive shaft 52, and then into the vertical linear motion of the drive screw 54, completing the conversion of motion forms. The transmission ratio of the transmission link is stable, and the backward stroke of the drive plate 51 can be converted into the controllable vertical lifting amount of the mounting base 41, realizing the adaptive change of the lifting height according to the size of the misalignment. The transmission is reliable and suitable for power transmission under heavy-duty conditions. Multiple threaded cylinders 53 are provided and are corresponding to multiple sets of lifting and moving mechanisms 4. Adjacent threaded cylinders 53 are connected by a conveyor belt.

[0031] Reference Figures 1 to 8A second spring 57 is fixedly connected between the drive plate 51 and the inner wall of the mounting groove. A connecting rod 58 is fixedly connected to the drive plate 51, extending to the rear end of the trolley 33. A limiting block 36 is slidably installed on the inner wall of the mounting groove at the rear end of the trolley 33. Multiple first teeth 581 are hinged to the connecting rod 58. A hinge shaft installed in the first tooth 581 is located at the end of the first tooth 581 near the forward direction of the trolley 33. A torsion spring is sleeved on the hinge shaft installed in the first tooth 581. The limiting block 36 can engage with the multiple first teeth 581 respectively. A third spring 37 is fixedly connected between the limiting block 36 and the inner wall of the mounting groove. A push block 38 is fixedly connected to the bottom of the limiting block 36. A downwardly inclined guide slope is opened on the side of the push block 38 facing the forward direction of the trolley 33. The push block 38 and the water slide 13 When the drive plate 51 contacts the misalignment, the moving wheel 42 moves downward and lifts the trolley 33. At this time, the third spring 37 pushes the limiting block 36 to move. The limiting block 36 drives the push block 38 to extend from the bottom of the trolley 33. At the same time, the limiting block 36 engages with multiple first teeth 581. The limiting block 36 limits the connecting rod 58, so that the connecting rod 58 can only move in one direction. When the drive plate 51 separates from the misalignment, the trolley 33 stops rising and can smoothly enter the land slide 22. When the rear end of the trolley 33 passes the land slide 22, the guide slope on the push block 38 contacts the land slide 22. The push block 38 is subjected to a reaction force and moves upward. The push block 38 drives the limiting block 36 to separate from multiple first teeth 581. The second spring 57 can then push the drive plate 51 to extend from the front end of the trolley 33 again for easy reuse next time.

[0032] Reference Figures 3 to 6 Limiting plates 34 are installed on both sides of the trolley 33, and the water slide 13 is located between the two limiting plates 34. The limiting plates 34 form a lateral limiting and protective structure, which can constrain the lateral offset of the trolley 33, suppress the lateral deviation of the trolley 33 during the steel beam dragging process, reduce the risk of the trolley 33 falling off the slide, and improve the overall stability of long-distance sliding operations.

[0033] Guide rods 35 are fixedly connected to both sides of the trolley 33. The guide rods 35 pass through the limiting plate 34. The trolley 33 is equipped with a moving part corresponding to the limiting plate 34. The drive plate 51 can drive the limiting plate 34 to move through the moving part. The guide rods 35 on both sides of the trolley 33 provide sliding guidance for the limiting plate 34. The displacement of the drive plate 51 can drive the limiting plate 34 to move laterally along the guide rods 35 through the moving part. In the high-risk working conditions of trolley 33 triggering lifting and transitioning across the joint, the lateral limiting gap of the limiting plate 34 can be adjusted synchronously. The constraint is tightened during the joint crossing stage, and the gap can be released during normal sliding, taking into account both the anti-deviation ability of the joint crossing and the degree of freedom of movement during normal sliding.

[0034] The moving component includes a movable screw 56 rotatably mounted on the trolley 33. The movable screw 56 is threadedly connected to the limiting plate 34. The movable screw 56 extends into the mounting groove and is connected to the drive shaft 52 via a bevel gear set. The drive shaft 52 outputs rotational power to the movable screw 56 through the bevel gear set, driving the limiting plate 34 to move laterally. By reusing the drive shaft of the lifting mechanism as a power source, the lifting action of the trolley 33 and the gap adjustment of the limiting plate 34 are mechanically linked, eliminating the need for an additional drive device, reducing the number of parts, and avoiding the problem of asynchronous actions caused by multiple independent mechanisms.

[0035] Reference Figures 4 to 7 The mounting base 41 includes a mounting plate 411 slidably mounted on the inner wall of the mounting groove and a connecting seat 412 for the rotating mounting of the movable wheel 42. The mounting plate 411 is fixedly connected to the drive screw 54, and the connecting seat 412 is rotatably connected to the mounting plate 411. A torsion spring is sleeved on the rotating shaft mounted in the connecting seat 412. This enables the connecting seat 412, which carries the movable wheel 42, to have a small-angle adaptive rotation capability. When there are local undulations on the slide surface or small angles at the joints, the movable wheel 42 can adaptively deflect with the connecting seat 412 to ensure effective contact between the movable wheel 42 and the slide. The torsion spring can provide a reset torque, and after disengaging from the protruding position, it can automatically return the connecting seat 412 to the center, reducing the probability of the movable wheel 42 getting stuck or damaged by single-point impact.

[0036] A cleaning plate 43 is installed at the bottom of the connecting seat 412, located at the front end of the moving wheel 42. When the moving wheel 42 contacts the water slide 13, the cleaning plate 43 contacts the water slide 13. When the moving wheel 42 presses down to contact the slide, the cleaning plate 43 simultaneously sticks to the surface of the slide, which can scrape off the welding slag, gravel, grease clumps and other debris on the slide in advance, preventing hard foreign objects from being rolled into the contact surface between the moving wheel 42 and the slide, avoiding the moving wheel 42 being overloaded by foreign objects, scratching the working surface of the slide, and ensuring the stability of the rolling support of the moving wheel 42.

[0037] The bottom of the connecting seat 412 is provided with a cleaning groove, and a first spring 44 is fixedly connected to the inner top surface of the cleaning groove. The first spring 44 is fixedly connected to the cleaning plate 43. When encountering the excess height of the slide rail weld or local protrusion, the cleaning plate 43 can compress the first spring 44 to avoid it, and will not be rigidly blocked or bent and deformed. At the same time, the preload of the spring ensures that the cleaning plate 43 always sticks to the slide rail, taking into account both the slag scraping and cleaning effect and the impact protection capability, and improving the service life of the cleaning plate 43.

[0038] Reference Figures 1 to 7A locking mechanism 6 is installed on the connecting seat 412. A placement groove is provided on the top of the connecting seat 412. The locking mechanism 6 includes a locking block 61 slidably installed in the placement groove. A locking spring 62 is fixedly connected between the locking block 61 and the inner wall of the placement groove. A locking groove for the locking block 61 to be inserted is provided on the bottom of the mounting plate 411. An L-shaped stop bar 63 is slidably installed on the side wall of the connecting seat 412 near the forward direction of the trolley 33. The L-shaped stop bar 63 extends into the placement groove. An unlocking groove for the L-shaped stop bar 63 to be inserted is provided on the side wall of the locking block 61. An unlocking slope is formed on the inner wall of the unlocking groove near the locking spring 62, and the L-shaped stop bar 63 contacts the unlocking slope. The moving wheel 4... During the extension process, the locking block 61 locks the mounting plate 411 to prevent the moving wheel 42 from shaking when supporting the trolley 33. When the trolley 33 moves onto the land slide 22, the L-shaped stop bar 63 first abuts against the land slide 22 and moves under the reaction force. The L-shaped stop bar 63 pushes the locking block 61 to move through the unlocking ramp, so that the locking block 61 is pulled out from the locking groove, releasing the limit on the connecting seat 412. The trolley 33 continues to move, the land slide 22 abuts against the connecting seat 412, and pushes the connecting seat 412 to flip. The connecting seat 412 drives the moving wheel 42 to flip into the trolley. At this time, the moving wheel 42 does not support the trolley 33.

[0039] The implementation principle of a combined sliding platform for cable-stayed bridge construction according to an embodiment of the present invention is as follows: When the water slide 13 settles and forms a misalignment with the land slide 22, the winch 31 drives the trolley 33 forward. At this time, the drive plate 51 first abuts against the land slide 22. The drive plate 51 moves under the reaction force, which drives the rack 55 to move. The rack 55 drives the threaded cylinder 53 to rotate. The threaded cylinder 53 drives the drive screw 54 to move downward. The drive screw 54 drives the moving wheel 42 to move downward, lifting the trolley 33. At the same time, the two limiting plates 34 move closer to each other. When the drive plate 51 separates from the land slide 22, the bottom of the trolley 33 is flush with the land slide 22, and the trolley 33 can smoothly enter the land slide 22. At this time, the push block 38 extends from the bottom of the trolley 33, and the limiting block 36 engages with multiple first teeth 581 to connect... The lever 58 provides unidirectional limiting. When the L-shaped stop lever 63 abuts against the land slide 22, the L-shaped stop lever 63 moves under the reaction force. The L-shaped stop lever 63 pushes the locking block 61 to move through the unlocking ramp, causing the locking block 61 to be pulled out of the locking groove, releasing the limiting of the connecting seat 412. The trolley 33 continues to move, and the land slide 22 abuts against the connecting seat 412, pushing the connecting seat 412 to flip. The connecting seat 412 drives the moving wheel 42 to flip into the trolley. At this time, the moving wheel 42 does not support the trolley 33. When the rear end of the trolley 33 passes the land slide 22, the guide ramp on the push block 38 contacts the land slide 22. The push block 38 moves upward under the reaction force, and the push block 38 causes the limiting block 36 to separate from the multiple first teeth 581. The second spring 57 pushes the drive plate 51 to extend from the front end of the trolley 33 again, making it convenient for continued use next time.

[0040] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A combined sliding platform for the construction of a cable-stayed bridge with a beam, comprising a water slide (13), a land slide (22), a towing system (3), and a lifting and moving mechanism (4), wherein the towing system (3) comprises a winch (31), a pulley block (32), and a trolley (33), characterized in that: The bottom of the trolley (33) is provided with an installation groove. The lifting and moving mechanism (4) includes a mounting seat (41) that is vertically slidably installed in the installation groove. A moving wheel (42) is rotatably installed on the mounting seat (41). The moving wheel (42) can extend out of the installation groove and contact the water slide (13) and the land slide (22) respectively. The trolley (33) is equipped with a driving mechanism (5) for driving the mounting seat (41) to move.

2. The combined sliding platform for construction of cable-stayed bridges with combined beams as described in claim 1, characterized in that: The drive mechanism (5) includes a drive plate (51) that passes through the side wall of the forward end of the trolley (33). The bottom of the drive plate (51) is flush with the bottom of the trolley (33). The drive plate (51) can contact the staggered end of the land slide (22). A transmission component is installed in the trolley (33). When the drive plate (51) abuts against the land slide (22) and moves relative to the trolley (33), the drive plate (51) drives the mounting base (41) to move through the transmission component.

3. The combined sliding platform for construction of a combined beam cable-stayed bridge according to claim 1, characterized in that: The mounting base (41) includes a mounting plate (411) that is slidably mounted on the inner wall of the mounting groove and a connecting seat (412) for rotating the movable wheel (42). The connecting seat (412) is rotatably connected to the mounting plate (411), and a torsion spring is sleeved on the rotating shaft mounted in the connecting seat (412).

4. A combined sliding platform for the construction of a cable-stayed bridge with a combined beam, as described in claim 3, is characterized in that: The bottom of the connecting seat (412) is equipped with a cleaning plate (43) located at the front end of the moving wheel (42). When the moving wheel (42) contacts the water slide (13), the cleaning plate (43) contacts the water slide (13).

5. A combined sliding platform for the construction of a cable-stayed bridge with a combined beam, as described in claim 4, is characterized in that: The bottom of the connecting seat (412) is provided with a cleaning groove, and a first spring (44) is fixedly connected to the inner top surface of the cleaning groove. The first spring (44) is fixedly connected to the cleaning plate (43).

6. A combined sliding platform for the construction of a cable-stayed bridge with a combined beam, as described in claim 2, is characterized in that: Limiting plates (34) are installed on both sides of the trolley (33), and the water slide (13) is located between the two limiting plates (34).

7. A combined sliding platform for the construction of a cable-stayed bridge with a combined beam, as described in claim 6, is characterized in that: Guide rods (35) are fixedly connected to both sides of the trolley (33). The guide rods (35) pass through the limiting plate (34). A moving part corresponding to the limiting plate (34) is installed in the trolley (33). The drive plate (51) can drive the limiting plate (34) to move through the moving part.

8. A combined sliding platform for the construction of a cable-stayed bridge with a combined beam, as described in claim 7, is characterized in that: The transmission component includes a transmission shaft (52) and a threaded cylinder (53) rotatably mounted in the mounting slot. The transmission shaft (52) and the threaded cylinder (53) are connected by a conveyor belt. The bottom of the threaded cylinder (53) is threadedly connected to a drive screw (54) that is fixedly connected to the mounting base (41). A rack (55) is fixedly connected to the drive plate (51). A gear (521) that meshes with the rack (55) is fixedly connected to the transmission shaft (52).

9. A combined sliding platform for the construction of a cable-stayed bridge with a combined beam, as described in claim 8, is characterized in that: The moving part includes a movable screw (56) rotatably mounted on a trolley (33), the movable screw (56) being threadedly connected to a limiting plate (34), the movable screw (56) extending into a mounting groove and being connected to a drive shaft (52) via a bevel gear set.

10. A combined sliding platform for the construction of a cable-stayed bridge with a combined beam, as described in claim 1, characterized in that: The lifting and moving mechanism (4) is provided in multiple sets along the moving direction of the trolley (33) and the width direction of the water slide (13).

Images