Steel platform hydraulic jacking and propelling integrated system and construction method

Abstract

The application discloses a steel platform hydraulic jacking and pushing integrated system and a construction method. The system comprises a mobile steel platform, a plurality of pushing mechanisms, a plurality of rail clamping mechanisms, a plurality of reversing driving pieces and a plurality of overturning driving pieces. The movement and landing of the steel platform are realized through cooperation of the components. The construction method of the system comprises the following steps: initial landing state confirmation, steel platform jacking, walking wheel set landing, pushing mechanism reversing, step-by-step pushing, landing support conversion and the like. The application realizes the hydraulic jacking and pushing integration of the steel platform, and makes the movement and landing of the steel platform on the steel trestle girder more convenient and stable, and improves the construction efficiency and safety.

Description

Technical Field

[0001] This application relates to the field of offshore construction, and in particular to an integrated hydraulic lifting and propulsion system and construction method for a steel platform. Background Technology

[0002] With the rapid development of highway and waterway engineering, the construction of large-scale high-pile beam-slab wharves and cross-sea bridges has increased year by year. This has made the construction conditions increasingly complex, especially in the case of construction on bare rock and shallow overburden seabeds with a certain water depth, requiring suitable working surfaces. The emergence of facilities such as floating platforms has, to some extent, met some of the construction needs, provided convenience for engineering construction, and promoted the development of related fields.

[0003] In nearshore bare rock and shallow overburden areas, where the water depth is too shallow to meet the requirements for platform vessels and similar facilities, large-area fixed construction platforms are typically erected. A common practice is to construct a steel trestle bridge over the water, then fully cover the surface of the trestle bridge's main beams with a steel platform, allowing cranes, drilling equipment, and other equipment to complete the pile foundation construction on the steel platform.

[0004] However, these existing technologies have significant drawbacks. Constructing large-area fixed construction platforms is time-consuming and requires substantial investment of manpower, resources, and time. Relying on external large lifting equipment not only increases construction costs but also makes equipment operation and scheduling difficult in complex construction environments. Summary of the Invention

[0005] To address the aforementioned technical problems, this application provides an integrated hydraulic lifting and propulsion system and construction method for a steel platform.

[0006] The technical solution provided in this application for an integrated hydraulic lifting and propulsion system and construction method for a steel platform is as follows: A hydraulic lifting and propulsion integrated system for a steel platform, comprising: The mobile steel platform is equipped with several sets of wheels on the bottom of both sides, and moves on the main beams of the steel trestle bridge on both sides by means of the wheels. Several jacking mechanisms are respectively installed on both sides of the mobile steel platform; Several rail clamping mechanisms are fixed to the telescopic ends of several of the aforementioned jacking mechanisms and are used to clamp the main beam of the steel trestle bridge. A number of reversing drive components correspond one-to-one with a number of the aforementioned jacking mechanisms. The reversing drive components are used to drive the jacking mechanisms to rotate and change direction, so as to realize the switching between the horizontal and vertical states of the jacking mechanisms. Several flipping drive components correspond one-to-one with several of the aforementioned walking wheel sets and are used to drive the corresponding walking wheel sets to flip. When the mobile steel platform moves, the walking wheel set flips to the bottom of the mobile steel platform, the jacking mechanism switches to a horizontal state, and the telescopic end of the jacking mechanism is clamped and fixed to the main beam of the steel trestle by the rail clamping mechanism. The mobile steel platform is driven to move along the direction of the main beam of the steel trestle by the horizontal extension of the jacking mechanism. When the mobile steel platform is positioned on the main beam of the steel trestle bridge, the jacking mechanism switches to a vertical position and, through the vertical extension of the jacking mechanism, vertically lifts the mobile steel platform and the traveling wheel set. The traveling wheel set is then rotated to the side of the mobile steel platform for storage. Finally, through the vertical retraction of the jacking mechanism, the bottom of the mobile steel platform is smoothly positioned on the main beam of the steel trestle bridge.

[0007] By adopting the above technical solution, the mobile steel platform can be automatically moved stepwise on the main beams of the steel trestle bridges on both sides using a jacking mechanism and a rail clamping mechanism. This eliminates the need for external large lifting equipment to traction. At the same time, the jacking mechanism can be switched between horizontal propulsion and vertical support functions by a reversing drive component. Combined with the tilting drive component for storing and lowering the walking wheel set, the same mechanical structure can not only complete the high-precision displacement of the platform, but also transform into a stable load-bearing support system after being placed in position. This allows the mobile steel platform to be stably placed on the main beams at the edges of the steel trestle bridges on both sides, eliminating the repeated disassembly and assembly of the steel platform in traditional construction, greatly shortening the construction period and reducing construction costs.

[0008] Preferably, the mobile platform is provided with several arc-shaped guide rails on both sides, the arc-shaped guide rails are erected and correspond one-to-one with several pushing mechanisms, and the end of the pushing mechanism away from the rail clamping mechanism is provided with a slider, the slider being slidably connected to the corresponding arc-shaped guide rail; the side of the rail clamping mechanism is provided with a support frame; the telescopic end of the pushing mechanism is provided with a rotating shaft, and is rotatably connected to the top of the support frame through the rotating shaft; when the pushing mechanism reverses direction, the pushing mechanism retracts so that the rotating shaft of the telescopic end of the pushing mechanism coincides with the center of the arc-shaped guide rail, and the rotating shaft of the pushing mechanism is driven to rotate through the reversing mechanism to realize the switching between the horizontal and vertical states of the pushing mechanism.

[0009] By adopting the above technical solution, the arc-shaped guide rail provides precise trajectory guidance for the reversing action of the jacking mechanism. When the jacking mechanism retracts, it drives the rotating shaft to move along the arc-shaped trajectory, ensuring that the axis of the rotating shaft always coincides with the center of the arc-shaped guide rail. This ensures the smoothness of the jacking mechanism's movement and the accuracy of its final positioning during the transition from horizontal to vertical, avoiding mechanism jamming. At the same time, the cooperation between the support frame and the rotating shaft enhances the structural strength of the connection between the rail clamping mechanism and the jacking mechanism.

[0010] Preferably, the support frame is provided with pulleys at the bottom, and the support frame slides on the main beam of the steel trestle bridge via the pulleys.

[0011] By adopting the above technical solution, pulleys are installed at the bottom of the support frame and slide on the main beam of the steel trestle bridge, which makes the movement of the support frame on the main beam of the steel trestle bridge smoother, reduces frictional resistance, and helps the jacking mechanism to better realize operations such as pushing and lifting the mobile steel platform.

[0012] Preferably, a locking mechanism is provided at the highest position of the arc-shaped guide rail. When the pushing mechanism is switched to the vertical state, the slider is located at the highest position of the arc-shaped guide rail, and the slider is fixed to the arc-shaped guide rail by the locking mechanism.

[0013] By adopting the above technical solution, after the jacking mechanism switches to the vertical state for bearing the load, the locking mechanism is used to rigidly lock the slider at the highest position, preventing the jacking mechanism from sliding or moving slightly when bearing huge vertical construction loads, effectively ensuring the overall stability and safety of the mobile steel platform after it is in place.

[0014] Preferably, the locking mechanism includes a vertical cylinder positioned vertically downwards on the outer side of the arc-shaped guide rail and a push rod extending vertically through the interior of the arc-shaped guide rail. The telescopic end of the vertical cylinder is coaxially and fixedly connected to the push rod. The slider has an insertion hole adapted to the push rod. When the pushing mechanism is switched to the vertical state, the insertion hole of the slider is aligned with the push rod, and the vertical cylinder pushes the push rod downwards, inserting the push rod into the insertion hole to lock the slider.

[0015] By adopting the above technical solution, a rapid and rigid connection between the slider and the arc-shaped guide rail is achieved by inserting the push rod into the insertion hole of the slider through a vertical cylinder. This structure is simple, reliable, and responsive, and can withstand large shear forces, ensuring the fixation of the slider position during vertical lifting and lowering load-bearing processes, and preventing loosening and failure.

[0016] Preferably, the mobile steel platform includes a load-bearing steel plate, several longitudinal beams, and several transverse beams; the load-bearing steel plate is located on the surface of the mobile steel platform, and the several longitudinal beams and several transverse beams constitute the supporting skeleton of the load-bearing steel plate; the arc-shaped guide rail, the jacking mechanism, the rail clamping mechanism, and the traveling wheel set are all located at the outermost longitudinal beam of the mobile steel platform.

[0017] By adopting the above technical solutions, the load-bearing steel plate provides a flat working surface, and the grid-like frame structure composed of longitudinal and transverse beams effectively disperses the concentrated load of the upper construction equipment, improves the overall rigidity of the platform, and integrates and fixes components such as arc-shaped guide rails between the longitudinal beams, so that the reaction force of the jacking mechanism can be directly transmitted to the main load-bearing structure, optimizes the force transmission path, and ensures that the structure is subjected to reasonable stress.

[0018] Preferably, limit guide plates are provided on both sides of the walking wheel assembly, and the two limit guide plates extend to both sides of the main beam of the steel trestle bridge.

[0019] By adopting the above technical solution, the limiting guide plate is closely attached to the side of the main beam of the steel trestle bridge during the platform movement, playing a guiding and anti-deviation role, preventing the platform from lateral displacement or torsion during the stepping process, ensuring that the platform moves strictly along the axis of the main beam, and at the same time, it limits the platform laterally when it is placed, improving the placement accuracy and the overturning resistance of the overall structure.

[0020] A construction method for an integrated hydraulic jacking and propulsion system for a steel platform includes the following steps: S1: Initial positioning status confirmation: The mobile steel platform is positioned on the main beam at the edge of the steel trestle bridge on both sides, the jacking mechanism is in a vertical position, the walking wheel set is flipped and stored on the side of the mobile steel platform, and the slider is locked at the highest position of the arc-shaped guide rail by the locking mechanism. S2: Lifting of the mobile steel platform: The vertically extending jacking mechanism is activated. The output end of the jacking mechanism acts on the rail clamping mechanism through the support frame, lifting the entire mobile steel platform upward, so that the bottom surface of the longitudinal beam is separated from the surface of the main beam of the steel trestle bridge, forming a space for the walking wheel set to be lowered. S3: The traveling wheel set is in place: The tilting drive is activated to drive the traveling wheel set to tilt downwards to the bottom of the mobile steel platform. Then, the jacking mechanism is controlled to retract vertically, and the load of the mobile steel platform is transferred to the traveling wheel set until the traveling wheel set is supported on the main beam of the steel trestle bridge. S4: Pushing mechanism reverses to horizontal state: Release the locking mechanism from the slider, start the reversing drive, drive the pushing mechanism to rotate around the rotating shaft, and at the same time the slider slides along the arc guide rail until the pushing mechanism switches to the horizontal state. At this time, the telescopic end of the pushing mechanism points to the length direction of the main beam of the steel trestle bridge. S5: Step-by-step propulsion: The control rail clamping mechanism clamps the main beam of the steel trestle bridge, the jacking mechanism extends horizontally, and pushes the mobile steel platform to move a set distance along the main beam of the steel trestle bridge. Then the rail clamping mechanism is released, and the jacking mechanism retracts horizontally to reset. The clamping and extension actions are repeated until the mobile steel platform reaches the next working point. S6: Positioning and Support Conversion: After reaching the target position, the reversing drive is activated again to switch the jacking mechanism from the horizontal state back to the vertical state. The slider is locked by the locking mechanism. The jacking mechanism extends vertically to lift the platform. The traveling wheel set is flipped and stored to the side. Finally, the jacking mechanism retracts vertically, so that the longitudinal beam at the bottom of the mobile steel platform is smoothly positioned on the main beam of the steel trestle bridge, completing one construction cycle.

[0021] By adopting the above technical solutions, efficient and streamlined operations of steel platforms in complex water environments such as shallow waters and nearshore bare rocks have been achieved. Compared with traditional erection and dismantling processes, this method integrates the lifting support and horizontal propulsion functions into the same mechanism. By utilizing the precise switching between vertical and horizontal states of the jacking mechanism, the functions of load bearing and propulsion are decoupled, avoiding the cumbersome cross-operation of multiple sets of equipment. Through the closed-loop cycle of "lifting-turning wheel-propulsion-lowering", the auxiliary of large lifting equipment such as crawler cranes or floating cranes is completely eliminated, significantly reducing construction costs and dependence on deep-water operating conditions. At the same time, the dual protection of arc-shaped guide rail guidance and locking mechanism ensures the stability of the jacking mechanism when bearing huge vertical construction loads, while the cooperation of the limit guide plate and the rail clamping mechanism effectively suppresses lateral deviation during the stepping process, greatly improving the smoothness of platform movement and positioning accuracy. This solves the problems of long construction period and high risk in the erection of large-area fixed platforms, and is particularly suitable for long-distance linear construction of high-pile beam-slab wharves and cross-sea bridges.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The mobile steel platform is automatically moved stepwise on the steel trestle by using a jacking mechanism in conjunction with a rail clamping mechanism. It does not require external large lifting equipment for traction. At the same time, the jacking mechanism is switched between horizontal propulsion and vertical support functions by a reversing drive component. Combined with the tilting drive component for storing and lowering the walking wheel set, the same set of mechanical structures can not only complete the high-precision displacement of the platform, but also transform into a stable load-bearing support system after being placed in position. This eliminates the repeated disassembly and assembly of the steel platform in traditional construction, greatly shortens the construction period and reduces construction costs. 2. The arc-shaped guide rail provides precise trajectory guidance for the reversing action of the jacking mechanism. When the jacking mechanism retracts, it drives the rotating shaft to move along the arc-shaped trajectory, ensuring that the axis of the rotating shaft always coincides with the center of the arc-shaped guide rail. This ensures the smoothness of the jacking mechanism's movement and the accuracy of its final positioning during the transition from horizontal to vertical, preventing the mechanism from jamming. At the same time, the cooperation between the support frame and the rotating shaft enhances the structural strength of the connection between the rail clamping mechanism and the jacking mechanism. 3. After the jacking mechanism switches to the vertical state for bearing the load, the locking mechanism is used to rigidly lock the slider at the highest position to prevent the jacking mechanism from sliding or moving slightly when bearing huge vertical construction loads, effectively ensuring the overall stability and safety of the mobile steel platform after it is in place. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the state of a mobile steel platform moving in an integrated hydraulic lifting and propulsion system for a steel platform according to an embodiment of this application.

[0024] Figure 2 yes Figure 1Enlarged diagram of point A in the middle.

[0025] Figure 3 This is a schematic diagram of the state of a mobile steel platform being positioned on the main beam in an integrated hydraulic lifting and propulsion system for a steel platform according to an embodiment of this application.

[0026] Figure 4 This is a cross-sectional view of a mobile steel platform positioned on the main beam in an integrated hydraulic lifting and propulsion system for a steel platform according to an embodiment of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Mobile steel platform; 11. Load-bearing steel plate; 12. Crossbeam; 13. Longitudinal beam; 2. Main beam; 3. Walking wheel set; 4. Limiting guide plate; 5. Rail clamping mechanism; 51. Support frame; 52. Pulley; 6. Arc-shaped guide rail; 7. Pushing mechanism; 71. Sliding block; 8. Reversing drive component; 9. Locking mechanism; 91. Vertical cylinder; 92. Push rod; 10. Tilting drive component. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0029] This application discloses an integrated hydraulic lifting and propulsion system for a steel platform, referring to... Figures 1 to 3 The system includes a mobile steel platform 1, several jacking mechanisms 7, several rail clamping mechanisms 5, several reversing drive components 8, and several tilting drive components 10. The jacking mechanisms 7 are arranged on both sides of the mobile steel platform 1 and distributed at intervals along its traveling direction. The rail clamping mechanisms 5 are fixed to the telescopic ends of the jacking mechanisms 7. The reversing drive components 8 correspond one-to-one with the jacking mechanisms 7, and the tilting drive components 10 correspond one-to-one with the traveling wheel sets 3. This achieves high-precision displacement and stable load-bearing support of the steel platform using a single set of mechanical structures, eliminating the repeated disassembly and assembly processes of the steel platform in traditional construction. The jacking mechanisms 7, in conjunction with the rail clamping mechanisms 5, enable automatic step-by-step movement of the steel platform. The reversing drive components 8 can control the jacking mechanisms 7 to switch between horizontal propulsion and vertical support functions. The tilting drive components 10 can store and lower the traveling wheel sets 3.

[0030] Specifically, the mobile steel platform 1 includes a load-bearing steel plate 11, several longitudinal beams 13, and several transverse beams 12. The load-bearing steel plate 11 is typically made of high-strength steel plate, has a flat shape, and is located on the surface of the mobile steel platform 1, providing a solid and flat working surface for various construction equipment, such as allowing truck cranes and drilling equipment to be stably placed and operated on it. Other alternative plates can be alloy steel plates or other plates with high strength and wear resistance. The longitudinal beams 13 and transverse beams 12 are generally composed of I-beams, channel steel, trusses, and other structural steel materials. They are interconnected to form the supporting skeleton of the load-bearing steel plate 11. This grid-like frame structure can effectively distribute the concentrated load of the upper construction equipment, improving the overall rigidity of the platform. The longitudinal beams 13 and transverse beams 12 can be connected by welding, which ensures the stability and strength of the connection, or by bolting, facilitating later disassembly and maintenance. The arc-shaped guide rail 6, the jacking mechanism 7, the rail clamping mechanism 5, and the traveling wheel set 3 are all located at the outermost longitudinal beam 13 of the mobile steel platform 1. This layout allows the reaction force generated by the jacking mechanism 7 to be directly transmitted to the main load-bearing structure, optimizing the force transmission path and ensuring reasonable stress on the structure.

[0031] The traveling wheel set 3 is installed at the four corners of the bottom of the mobile steel platform 1, specifically at the longitudinal beam 13. The traveling wheel set 3 typically includes wheels, axles, and a support frame. The wheels are generally made of rubber or steel, offering good wear resistance and load-bearing capacity. The axles are connected to the wheels via bearings. A connecting shaft is installed at the outer edge of the bottom of the longitudinal beam 13. The support frame is rotatably connected to the longitudinal beam 13 via the connecting shaft, enabling the traveling wheel set 3 to rotate. When the traveling wheel set 3 rotates to the bottom of the mobile steel platform 1, the top of the support frame abuts against the bottom of the side beam, allowing the mobile steel platform 1 to move on the main beam 2 of the steel trestle bridge via the traveling wheel set 3.

[0032] In this embodiment, limit guide plates 4 are fixed on both sides of the bottom of the support of the walking wheel set 3. The limit guide plates 4 are generally made of steel plates, and the two limit guide plates 4 extend to both sides of the main beam 2 of the steel trestle bridge. They play a guiding and anti-deviation role during the movement of the walking wheel set 3, preventing lateral displacement or torsion of the platform. The limit guide plates 4 can also be made of other materials, such as aluminum alloy, as long as they can meet the guiding and anti-deviation functions.

[0033] The flipping drive 10 corresponds one-to-one with the walking wheel set 3, and is used to drive the corresponding walking wheel set 3 to flip. The flipping drive 10 can be a stepper motor, which is installed on the side of the longitudinal beam 13, and its output shaft is coaxially and fixedly connected to the connecting shaft of the bracket. By driving the connecting shaft to rotate through the motor, the flipping and storage function of the walking wheel set 3 is realized. In other embodiments, the flipping drive 10 can also be a hydraulic cylinder or an electric push rod, which drives the walking wheel set 3 to flip through a linkage mechanism or other means.

[0034] The jacking mechanism 7 is located on the outside of the longitudinal beam 13 of the mobile steel platform 1. It generally uses a hydraulic jack or hydraulic cylinder, which has a large thrust and high stability. The jacking mechanism 7 can also use other types of telescopic mechanisms such as electric push rods. In this embodiment, several arc-shaped guide rails 6 are fixed inside the mobile platform. The arc-shaped guide rails 6 are vertically arranged and distributed at the front, rear, and sides of the mobile platform, and each arc-shaped guide rail 6 corresponds to a jacking mechanism 7. To improve the stability of the arc-shaped guide rails 6, a support rod (not shown in the figure) can be connected between the longitudinal beam 13 and the outside of the arc-shaped guide rails 6.

[0035] A slider 71 is fixed to one end of the jacking mechanism 7 away from the clamping mechanism 5. The slider 71 is usually made of metal, T-shaped, and connected to the jacking mechanism 7 by bolts. The slider 71 is slidably connected to the corresponding arc-shaped guide rail 6. The arc-shaped guide rail 6 is generally made of channel steel or I-beam steel, and its internal groove structure is adapted to the T-shaped slider 71. The arc length of the arc-shaped guide rail 6 is one-quarter of a complete circle, providing precise trajectory guidance for the reversing action of the jacking mechanism 7. In addition, both ends of the arc-shaped guide rail 6 are sealed to prevent the slider 71 from sliding out.

[0036] The rail clamping mechanism 5 is fixed to the telescopic end of the jacking mechanism 7 and is used to clamp the upper part of the main beam 2 of the steel trestle bridge. Specifically, the rail clamping mechanism 5 is an automatic rail clamp, which includes grippers and a drive device. The grippers are generally made of steel plates and are arc-shaped, allowing them to fit tightly against the main beam 2 of the steel trestle bridge. The drive device is a hydraulic cylinder or an electric motor, which drives the grippers to open and close. When the rail clamping mechanism 5 clamps the main beam 2 of the steel trestle bridge, the horizontal extension of the jacking mechanism 7 can drive the movable steel platform 1 to move along the direction of the main beam 2 of the steel trestle bridge.

[0037] A support frame 51 is installed on the side of the rail clamping mechanism 5. A pulley 52 is provided at the bottom of the support frame 51, allowing it to slide smoothly on the main beam 2 of the steel trestle bridge via the pulley 52, thus reducing frictional resistance. The telescopic end of the jacking mechanism 7 is equipped with a rotating shaft via a bearing seat, and is rotatably connected to the top of the support frame 51, enabling the switching between horizontal and vertical states of the jacking mechanism 7. The rotating shaft is typically made of alloy steel, possessing high strength and toughness. The support frame 51 is generally welded from angle steel or channel steel, enhancing the structural strength at the connection between the rail clamping mechanism 5 and the jacking mechanism 7. When the jacking mechanism 7 extends and pushes horizontally, the support frame 51 and the rail clamping mechanism 5 act as reaction seats for the entire mobile steel platform 1, helping the jacking mechanism 7 to better achieve the pushing operation of the mobile steel platform 1.

[0038] In this embodiment, the reversing drive 8 corresponds one-to-one with the jacking mechanism 7, and is used to drive the jacking mechanism 7 to rotate and reverse, thereby switching the jacking mechanism 7 between horizontal and vertical states. The reversing drive 8 can be a hydraulic motor or an electric motor, and is installed at the support frame 51. It drives the rotating shaft of the jacking mechanism 7 to rotate through gear transmission or chain transmission. It should be emphasized that when the jacking mechanism 7 reverses its direction, the jacking mechanism 7 needs to retract so that the rotating shaft of the telescopic end of the jacking mechanism 7 coincides with the center of the arc-shaped guide rail 6.

[0039] When the mobile steel platform 1 moves, the tilting drive 10 drives the traveling wheel set 3 to tilt to the bottom of the mobile steel platform 1, the reversing drive 8 switches the jacking mechanism 7 to a horizontal state, and the rail clamping mechanism 5 clamps and fixes the telescopic end of the jacking mechanism 7 to the main beam 2 of the steel trestle. The jacking mechanism 7 extends horizontally, pushing the mobile steel platform 1 to move along the main beam 2 of the steel trestle. When the mobile steel platform 1 is positioned on the main beam 2 of the steel trestle, the reversing drive 8 switches the jacking mechanism 7 to a vertical state, the jacking mechanism 7 extends vertically, and vertically lifts the mobile steel platform 1 and the traveling wheel set 3. The tilting drive 10 drives the traveling wheel set 3 to tilt to the side of the mobile steel platform 1 for storage, and the jacking mechanism 7 retracts vertically, so that the bottom of the mobile steel platform 1 is stably positioned on the main beam 2 of the steel trestle.

[0040] Reference Figure 4 In this embodiment, to provide stability during the lifting process of the mobile steel platform 1, a locking mechanism 9 is provided at the highest position of the arc-shaped guide rail 6. The locking mechanism 9 includes a vertical cylinder 91 vertically downwardly disposed on the outside of the arc-shaped guide rail 6 and a push rod 92 vertically penetrating the interior of the arc-shaped guide rail 6. The telescopic end of the vertical cylinder 91 is coaxially and fixedly connected to the push rod 92. The slider 71 has an insertion hole adapted to the push rod 92. When the jacking mechanism 7 switches to the vertical state, the slider 71 is located at the highest position of the arc-shaped guide rail 6. At this time, the insertion hole of the slider 71 is directly opposite the push rod 92. The vertical cylinder 91 pushes the push rod 92 downward and inserts the push rod 92 into the insertion hole to lock the slider 71. The vertical cylinder 91 drives the push rod 92 to be inserted into the insertion hole of the slider 71, realizing a quick and rigid connection between the slider 71 and the arc-shaped guide rail 6. This structure is simple, reliable, and responsive, and can withstand large shear forces, ensuring the fixation of the slider 71 during vertical lifting and lowering load-bearing processes, and preventing loosening and failure.

[0041] The construction method of the integrated hydraulic lifting and propulsion system for steel platforms provided in this application includes the following steps: S1: Initial Positioning Confirmation. The mobile steel platform 1 is positioned on the main beam 2 at the edges of the steel trestle bridges on both sides. At this time, the jacking mechanism 7 is in a vertical position, the traveling wheel set 3 is flipped and stored in the side of the mobile steel platform 1, and the slider 71 is locked in the highest position of the arc-shaped guide rail 6 by the locking mechanism 9. In this step, the staff needs to check the status of each component to ensure that the jacking mechanism 7 is vertically stable, the traveling wheel set 3 is properly stored, and the locking mechanism 9 firmly locks the slider 71 to ensure the safety and smooth progress of subsequent construction. The inspection can be carried out by observation and measurement, such as using a level to check the verticality of the jacking mechanism 7 and using calipers to measure the gap between the slider 71 and the arc-shaped guide rail 6.

[0042] S2: Lifting of the mobile steel platform 1. Activate all vertically positioned jacking mechanisms 7 to extend vertically. The output end of the jacking mechanism 7 acts on the rail clamping mechanism 5 through the support frame 51, lifting the entire mobile steel platform 1 upwards. This causes the bottom surface of the longitudinal beam 13 to detach from the surface of the main beam 2 of the steel trestle bridge, creating space for the wheel sets 3 to be lowered. When operating the jacking mechanism 7 to extend, care must be taken to control the lifting speed to avoid excessive speed causing platform swaying or instability. The lifting speed can be precisely controlled through the regulating valve of the hydraulic system. Simultaneously, a designated person should observe the platform's lifting status and make timely adjustments.

[0043] S3: The traveling wheel set 3 is in place. Activate the tilting drive 10 to tilt the traveling wheel set 3 downwards to the bottom of the mobile steel platform 1. At this point, the two limiting guide plates 4 on both sides of each traveling wheel set 3 are facing downwards. Then, control the jacking mechanism 7 to retract vertically, transferring the load of the mobile steel platform 1 to the traveling wheel set 3 until the traveling wheel set 3 is supported on the main beam 2 of the steel trestle bridge, with the two limiting guide plates 4 of the traveling wheel set 3 resting on either side of the main beam 2. During the tilting process of the traveling wheel set 3, ensure the tilting angle is accurate to avoid collisions between the traveling wheel set 3 and other components, as well as collisions between the limiting guide plates 4 and the main beam 2. When controlling the jacking mechanism 7 to retract, operate slowly to ensure the platform load is smoothly transferred to the traveling wheel set 3, preventing damage to the traveling wheel set 3 due to instantaneous load transfer.

[0044] S4: The jacking mechanism 7 reverses to a horizontal position. By releasing the locking mechanism 9 from the slider 71, the reversing drive 8 is activated, causing the jacking mechanism 7 to rotate around its axis. Simultaneously, the slider 71 slides along the arc-shaped guide rail 6 until the jacking mechanism 7 switches to a horizontal position. At this point, the telescopic end of the jacking mechanism 7 points along the length of the main beam 2 of the steel trestle bridge. When releasing the locking mechanism 9, ensure it is completely released to avoid affecting the reversing action of the jacking mechanism 7. During the reversing process of the jacking mechanism 7, closely monitor the sliding of the slider 71 on the arc-shaped guide rail 6 to prevent jamming.

[0045] S5: Step-by-step advancement. The clamping mechanism 5 clamps the main beam 2 of the steel trestle bridge, while the jacking mechanism 7 extends horizontally, pushing the mobile steel platform 1 a set distance along the main beam 2. Then, the clamping mechanism 5 releases, and the jacking mechanism 7 retracts horizontally to reset, repeating the clamping and extending actions until the mobile steel platform 1 reaches the next working point. During each clamping and releasing of the clamping mechanism 5, it is essential to ensure uniform clamping force to prevent platform misalignment due to uneven clamping force. When the jacking mechanism 7 extends horizontally, the extension amount must be carefully controlled to ensure that the distance the platform moves each time meets the set requirements.

[0046] S6: Positioning and Support Conversion. Upon reaching the target location, the reversing drive 8 is activated again, switching the jacking mechanism 7 from a horizontal to a vertical state. The locking mechanism 9 locks the slider 71, and several jacking mechanisms 7 simultaneously extend vertically to lift the platform. The traveling wheel set 3 flips and retracts to the side. Finally, several jacking mechanisms 7 simultaneously retract vertically, allowing the mobile steel platform 1 to smoothly land on the main beams 2 of the steel trestle bridge on both sides, completing one construction cycle. During the reversing and vertical extension of the jacking mechanisms 7, it is crucial to ensure that all jacking mechanisms 7 operate synchronously to prevent the platform from tilting. When retracting the traveling wheel set 3, it is essential to ensure that it is properly retracted and does not affect the platform's positioning.

[0047] The implementation principle of this embodiment is as follows: This construction method integrates the lifting support and horizontal propulsion functions into the same mechanism. By utilizing the precise switching between vertical and horizontal states of the jacking mechanism 7, the functions of load bearing and propulsion are decoupled. Through the closed-loop cycle of "lifting-turning wheel-propulsion-lowering", the cumbersome cross-operation of multiple sets of equipment is avoided, and the assistance of large lifting equipment such as crawler cranes or floating cranes is eliminated, significantly reducing construction costs and dependence on deep-water operation conditions. At the same time, the dual protection of the arc-shaped guide rail 6 for guidance and the locking mechanism 9 for fixation ensures the stability of the jacking mechanism 7 when bearing huge vertical construction loads, while the cooperation of the limiting guide plate 4 and the rail clamping mechanism 5 effectively suppresses lateral deviation during the stepping process, greatly improving the smoothness of platform movement and positioning accuracy. This solves the problems of long construction period and high risk in the construction of large-area fixed platforms, and is especially suitable for long-distance linear construction of high-pile beam-slab wharves and cross-sea bridges.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A hydraulic jacking and propulsion integrated system for a steel platform, characterized in that, include: The mobile steel platform (1) has several sets of walking wheels (3) at the bottom of both sides, and moves on the main beams (2) of the steel trestle bridge on both sides by walking wheels (3); Several jacking mechanisms (7) are respectively set on both sides of the mobile steel platform (1); Several rail clamping mechanisms (5) are fixed to the telescopic ends of several of the aforementioned jacking mechanisms (7) and are used to clamp the main beam (2) of the steel trestle bridge. A number of reversing drive components (8) correspond one-to-one with a number of the pushing mechanisms (7). The reversing drive components (8) are used to drive the pushing mechanisms (7) to rotate and change direction, so as to realize the switching between the horizontal and vertical states of the pushing mechanisms (7). A plurality of flipping drive components (10) correspond one-to-one with a plurality of the walking wheel sets (3) and are used to drive the corresponding walking wheel sets (3) to flip. When the mobile steel platform (1) moves, the walking wheel set (3) flips to the bottom of the mobile steel platform (1), the jacking mechanism (7) switches to the horizontal state, and the telescopic end of the jacking mechanism (7) is clamped and fixed to the main beam (2) of the steel trestle by the rail clamping mechanism (5), and the mobile steel platform (1) is driven to move along the direction of the main beam (2) of the steel trestle by the horizontal extension of the jacking mechanism (7); When the mobile steel platform (1) is positioned on the main beam (2) of the steel trestle bridge, the jacking mechanism (7) switches to the vertical state and, through the vertical extension of the jacking mechanism (7), vertically lifts the mobile steel platform (1) and the walking wheel set (3). The walking wheel set (3) flips to the side of the mobile steel platform (1) for storage, and then through several jacking mechanisms (7) synchronously retracts vertically so that the two ends of the mobile steel platform (1) are stably positioned on the main beams (2) of the steel trestle bridge on both sides.

2. The integrated hydraulic lifting and propulsion system for a steel platform according to claim 1, characterized in that: The mobile platform is provided with several arc-shaped guide rails (6) on both sides. The arc-shaped guide rails (6) are set vertically and correspond one-to-one with several pushing mechanisms (7). The end of the pushing mechanism (7) away from the rail clamping mechanism (5) is provided with a slider (71). The slider (71) is slidably connected to the corresponding arc-shaped guide rail (6). The side of the rail clamping mechanism (5) is provided with a support frame (51). The telescopic end of the pushing mechanism (7) is provided with a rotating shaft and is rotatably connected to the top of the support frame (51) through the rotating shaft. When the pushing mechanism (7) changes direction, the pushing mechanism (7) retracts so that the rotating shaft of the telescopic end of the pushing mechanism (7) coincides with the center of the arc-shaped guide rail (6), and the rotating shaft of the pushing mechanism (7) is driven to rotate through the reversing mechanism to realize the switching between the horizontal and vertical states of the pushing mechanism (7).

3. The integrated hydraulic lifting and propulsion system for a steel platform according to claim 2, characterized in that: The support frame (51) is equipped with a pulley (52) at the bottom, and the support frame (51) slides on the main beam (2) of the steel trestle bridge via the pulley (52).

4. According to claim 2, a locking mechanism (9) is provided at the highest position of the arc-shaped guide rail (6). When the jacking mechanism (7) is switched to the vertical state, the slider (71) is located at the highest position of the arc-shaped guide rail (6), and the slider (71) is fixed to the arc-shaped guide rail (6) by the locking mechanism (9).

5. The integrated hydraulic lifting and propulsion system for a steel platform according to claim 4, characterized in that: The locking mechanism (9) includes a vertical cylinder (91) vertically downwardly disposed on the outside of the arc-shaped guide rail (6) and a push rod (92) vertically penetrating the inside of the arc-shaped guide rail (6). The telescopic end of the vertical cylinder (91) is coaxially fixedly connected to the push rod (92). The slider (71) has an insertion hole adapted to the push rod (92). When the pushing mechanism (7) is switched to the vertical state, the insertion hole of the slider (71) is directly opposite the push rod (92). The vertical cylinder (91) pushes the push rod (92) downward and inserts the push rod (92) into the insertion hole to lock the slider (71).

6. The integrated hydraulic lifting and propulsion system for a steel platform according to claim 4, characterized in that: The mobile steel platform (1) includes a load-bearing steel plate (11), several longitudinal beams (13) and several transverse beams (12); the load-bearing steel plate (11) is located on the surface of the mobile steel platform (1), and the several longitudinal beams (13) and several transverse beams (12) constitute the supporting skeleton of the load-bearing steel plate (11). The arc-shaped guide rail (6), the jacking mechanism (7), the rail clamping mechanism (5) and the walking wheel set (3) are all located at the outermost longitudinal beam (13) of the mobile steel platform (1).

7. The integrated hydraulic lifting and propulsion system for a steel platform according to claim 4, characterized in that: The walking wheel set (3) is provided with limit guide plates (4) on both sides, and the two limit guide plates (4) extend to both sides of the main beam (2) of the steel trestle bridge.

8. A construction method for a steel platform hydraulic jacking and propulsion integrated system as described in any one of claims 4 to 7, characterized in that, Includes the following steps: S1: Initial positioning status confirmation: The mobile steel platform (1) is placed on the main beam (2) located at the edge of the steel trestle bridge on both sides, the jacking mechanism (7) is in a vertical state, the walking wheel set (3) is flipped and stored on the side of the mobile steel platform (1), and the slider (71) is locked to the highest position of the arc guide rail (6) by the locking mechanism (9). S2: Lifting of the mobile steel platform (1): Start the vertical extension of the jacking mechanism (7) in the vertical state. The output end of the jacking mechanism (7) acts on the rail clamping mechanism (5) through the support frame (51) to lift the mobile steel platform (1) upward as a whole, so that the bottom surface of the longitudinal beam (13) is separated from the surface of the main beam (2) of the steel trestle bridge, forming a space for the walking wheel set (3) to be lowered. S3: The walking wheel set (3) is in place: Start the flipping drive (10) to drive the walking wheel set (3) to flip down to the bottom of the mobile steel platform (1), and then control the jacking mechanism (7) to retract vertically, so that the load of the mobile steel platform (1) is transferred to the walking wheel set (3) until the walking wheel set (3) is supported on the main beam (2) of the steel trestle bridge. S4: Push mechanism (7) changes direction to horizontal state: Release the locking mechanism (9) from locking the slider (71), start the reversing drive (8), drive the push mechanism (7) to rotate around the rotating shaft, and at the same time the slider (71) slides along the arc guide rail (6) until the push mechanism (7) switches to the horizontal state. At this time, the telescopic end of the push mechanism (7) points to the length direction of the main beam (2) of the steel trestle bridge. S5: Step-by-step propulsion: The control rail clamping mechanism (5) clamps the main beam (2) of the steel trestle bridge, and the jacking mechanism (7) extends horizontally to push the mobile steel platform (1) to move a set distance along the direction of the main beam (2) of the steel trestle bridge. Then the rail clamping mechanism (5) releases, and the jacking mechanism (7) retracts horizontally to reset. The clamping and extension actions are repeated until the mobile steel platform (1) reaches the next work point. S6: Positioning and Support Conversion: After reaching the target position, restart the reversing drive (8) to switch the jacking mechanism (7) from the horizontal state back to the vertical state, and lock the slider (71) through the locking mechanism (9). Several jacking mechanisms (7) extend vertically in sync to lift the mobile steel platform (1), and the walking wheel set (3) flips and is stored on the side of the mobile steel platform (1). Finally, several jacking mechanisms (7) retract vertically in sync, so that the mobile steel platform (1) is smoothly placed on the main beam (2) of the steel trestle bridge on both sides, completing one construction cycle.

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