A bridge self-lifting tie beam support system

Abstract

This invention belongs to the field of bridge construction technology and discloses a self-lifting tie beam support system for bridges, including a bridge pier, and further including: a lifting component, which is hoisted to the top of the bridge pier by a lifting device; and a platform component, which is disposed outside the bridge pier and is supported against the outside of the bridge pier by a stabilizing component. This invention avoids potential hazards such as falls from height, mechanical injuries, lifting injuries, electric shocks, and falling objects that may occur during the installation and dismantling of the bridge platform. The entire construction process involves no work with loose parts at height, and personnel remain on the ground or within a stable platform, achieving "zero risk of falls from height." This effectively reduces the probability of safety accidents, significantly reduces the repeated installation and dismantling of the support platform, greatly reduces the use of manpower and machinery during construction, and accelerates the construction progress of the tie beam.

Description

Technical Field

[0001] This invention belongs to the field of bridge construction technology, specifically a bridge self-lifting tie beam support system. Background Technology

[0002] In the field of modern transportation infrastructure such as highways and railways, high piers and long-span bridges have become the mainstream structural form for crossing canyons, rivers and complex terrains. Cylindrical piers are widely used due to their good load-bearing performance and relatively simple construction, while the tie beams that connect the piers and ensure the integrity of the structure must rely on reliable high-altitude work platforms for construction.

[0003] For a long time, the industry has generally used steel pipe and coupler-type scaffolding as the working platform for the construction of cylindrical pier tie beams. The typical process is as follows: a large number of loose materials such as steel pipes, couplers, and scaffold boards are transported to the vicinity of the pier. Construction workers climb to the height of the pier and complete the erection of the entire working platform in the air by assembling it layer by layer from bottom to top. After the concrete of the tie beam segment is poured and reaches the required strength, the platform is dismantled by removing it layer by layer from top to bottom, and then transported to the next pier to repeat the above cycle.

[0004] With the continuous expansion of bridge construction scale and the increasing height of piers in my country, the construction environment is becoming increasingly complex (such as crossing rivers and seas, deep mountains and canyons), which places unprecedented demands on the safety, efficiency and intelligence level of construction equipment. The traditional manual high-altitude assembly mode is not only labor-intensive and dangerous in the working environment, but its inherent low efficiency, high consumption and high risk characteristics have become a key bottleneck restricting the rapid and standardized construction of bridge substructures. The industry urgently needs a new type of construction equipment and construction method that can fundamentally change the operation mode and realize "ground operation as the main method, high-altitude operation as the auxiliary method, integrated installation and mechanized lifting". Therefore, a bridge self-lifting tie beam support system is proposed. Summary of the Invention

[0005] To address the problems mentioned in the background art, the present invention provides a bridge self-lifting tie beam support system, which solves the problems of traditional manual high-altitude component erection mode, which is not only labor-intensive and dangerous in the working environment, but also inherently inefficient, high-consumption, and high-risk.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a bridge self-lifting tie beam support system, comprising bridge piers, and further comprising: A lifting assembly, which is hoisted to the top of the bridge pier by a lifting device; A platform component is disposed outside the bridge pier, and the platform component is abutted against the outside of the bridge pier by a stabilizing component; A docking assembly is provided, which is mounted on the stabilizing assembly. The lifting assembly is connected to the docking assembly via a steel wire rope to achieve the hoisting of the platform assembly. The lifting assembly includes a main truss, a cantilever beam is installed on the top of the main truss, a winch is installed on the top of the cantilever beam, and pulleys are installed at both ends of the cantilever beam. An electric actuator is installed at the bottom of the main truss, and a support leg is installed at the output end of the electric actuator; The hoisting equipment lifts the main truss to the top of the pier, and the electric push rod pushes out the outriggers so that the outriggers overlap the tops of the two piers; The platform component includes an operating platform, and a through rod is fitted onto the bridge pier; The winch is connected to the docking assembly via a steel wire rope passing through a pulley, which moves the operating platform up the pier. Then, the mandrel passes through the pier, and jacks are installed on the mandrel via a jack stabilizing beam, so that the operating platform is attached to the top of the jacks.

[0007] Preferably, the operating platform is composed of a main load-bearing frame and an operating platform surface; The main load-bearing frame consists of I-beam sliding beams and standardized platform truss steel structural components, which are assembled into a "U"-shaped or "gate"-shaped space truss that can cover the pier columns through hexagonal bolt connectors. The operating platform is formed by laying steel plates or grid plates on the upper part of the main frame to create a safe working surface.

[0008] Preferably, the stabilizing component includes a tie rod mounted on the I-beam of the operating platform, a pair of guide wheels movably mounted in the middle of the tie rod and in contact with the outer wall of the pier, and a first rubber pad is provided on the outside of the guide wheels.

[0009] Preferably, the outer peripheral surface of the guide wheel and the first rubber pad is adapted to the outer peripheral surface of the bridge pier; The operating platform is assembled on the ground and located outside the pier. The tie rod is installed on the operating platform so that the first rubber pad contacts the outside of the pier. The operating platform moves upward along the pier via guide wheels and the first rubber pad.

[0010] Preferably, a protective cover is fixedly installed on the outside of the pull rod, and a ratchet sleeved on the outside of the pull rod is installed at the end of the guide wheel.

[0011] Preferably, the docking assembly includes a pad fixed to the outside of the pull rod, a beam rod sliding vertically on the outside of the pad through a stabilizer, and a tension spring for pulling the beam rod provided on the top of the pad; Both ends of the beam are equipped with hooks.

[0012] Preferably, a locking member located inside the protective cover is installed on the outside of the beam rod via a connecting piece, and the inner wall of the locking member is provided with locking teeth; In the initial state, the locking element engages with the ratchet through the locking teeth under the action of the tension spring; The bottom of the locking component is equipped with a U-shaped frame, and a guide groove is provided on the side of the U-shaped frame. A slider that slides in the guide groove is installed on the inner wall of the protective cover.

[0013] Preferably, the winch is connected to the hook via a wire rope. By winding the wire rope, the beam is subjected to force and moved upward to compress the tension spring, causing the locking member to disengage from the ratchet, while the bottom of the stabilizing member contacts the bottom of the pad.

[0014] Preferably, a receiving frame is installed at the bottom of the protective cover, a T-shaped frame is installed on the receiving frame, an mounting frame is movably installed on the T-shaped frame via a guide rod, and a second rubber pad is installed on the outside of the mounting frame; The T-shaped frame and the guide rod are respectively equipped with corresponding second magnets and first magnets.

[0015] Preferably, the bottom of the U-shaped frame is equipped with an abutment plate, and the top of the mounting frame is arc-shaped; When the operating platform moves to the set position, the wire rope is disconnected from the hook, the locking member engages with the ratchet under the action of the tension spring, and the abutment plate pushes the mounting bracket and the second rubber pad out to abut against the outside of the pier.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention avoids potential hazards such as falls from heights, mechanical injuries, lifting injuries, electric shocks, and falling objects that may occur during the construction of bridge tie beams by using a self-lifting tie beam support platform. The entire construction process involves no work involving loose parts at height, and personnel remain on the ground or within a stable platform throughout, achieving "zero risk of falls from heights." This effectively reduces the probability of safety accidents, significantly reduces the need for repeated assembly and disassembly of the support platform, greatly reduces the use of manpower and machinery during construction, and accelerates the construction progress of the tie beams.

[0017] This invention involves assembling an operating platform on the ground and attaching it to the exterior of a bridge pier. A tie rod is installed on two I-beams on the operating platform, positioned between the two piers, thereby improving the overall stability of the operating platform. The first rubber pad on the outside of the guide wheel contacts the outer wall of the pier. A remotely controlled winch pulls the operating platform upwards along the outer circumference of the pier via a wire rope, using the guide wheel and the first rubber pad. During this upward movement, the guide wheel limits the platform's movement, ensuring it remains vertical and preventing swaying that could cause impact to the pier and damage to either the pier or the operating platform. This ensures the stable operation of the operating platform.

[0018] This invention involves moving the operating platform along the bridge pier to a set position and placing it on top of the jack. At this point, the wire rope is disconnected from the hook, and the beam moves downward under the action of the tension spring. This causes the locking teeth on the inner wall of the locking device to engage with the ratchet, locking the guide wheel and the first rubber pad. The first rubber pad is always in contact with the outer wall of the bridge pier. This improves the stability of the operating platform by having the guide wheel and the first rubber pad abut against the outside of the bridge pier, thus preventing the operating platform from shaking during construction.

[0019] This invention involves placing the operating platform at a set position on top of the jack. The wire rope is disconnected from the hook, and the beam loses tension. Under the action of the tension spring, the locking component engages with the ratchet. As the locking component moves downward, it pushes the mounting frame outward through the contact plate, causing the second rubber pad to contact the outside of the pier. This increases the contact area between the operating platform and the pier, further improving the stability of the operating platform. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the bridge pier and the lifting assembly of the present invention. Figure 2 This is a schematic diagram of the cooperative structure of the bridge pier, lifting component and platform component of the present invention; Figure 3 This is a schematic diagram of the motion structure of the bridge pier, lifting assembly, and platform assembly of the present invention; Figure 4 This is a schematic diagram of the external structure of the lifting component of the present invention; Figure 5 This is a top view schematic diagram of the bridge pier and lifting assembly of the present invention. Figure 6 This is a schematic diagram of the cooperation structure between the platform components and the bridge piers of the present invention; Figure 7 This is a schematic diagram of the connection between the through-hole rod and the bridge pier of the present invention; Figure 8 This is a schematic diagram of the merging structure of the bridge pier, platform component, stabilizing component, and docking component of the present invention; Figure 9This is a schematic diagram of the merging structure of the bridge pier, stabilizing component, and docking component of the present invention; Figure 10 This is a schematic diagram of the external structure of the stabilizing component and the docking component of the present invention; Figure 11 This is a partial structural diagram of the stabilizing component and docking component of the present invention; Figure 12 This is a schematic diagram of the disassembled structure of the stabilizing component and the docking component of the present invention; Figure 13 This is a partial disassembly diagram of the stabilizing component of the present invention.

[0021] In the diagram: 1. Pier; 2. Lifting assembly; 21. Main truss; 22. Pulley; 23. Winch; 24. Electric actuator; 25. Outrigger; 26. Cantilever beam; 3. Platform assembly; 31. Operating platform; 32. Through rod; 33. Jack; 34. Jack stabilizing beam; 4. Stabilizing assembly; 41. Tie rod; 42. First rubber pad; 43. Guide wheel; 45. Protective cover; 46. Ratchet; 411. Support frame; 412. T-shaped frame; 413. First magnet; 414. Mounting frame; 415. Guide rod; 416. Second rubber pad; 417. Second magnet; 5. Connecting assembly; 51. Beam; 52. Hook; 53. Connecting part; 54. Locking part; 55. Guide groove; 56. Contact plate; 57. U-shaped frame; 58. Sliding block; 511. Stabilizing part; 512. Pad block. Detailed Implementation

[0022] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] like Figures 1 to 13 As shown, the present invention provides a bridge self-lifting tie beam support system, including a bridge pier 1, and further comprising: Lifting component 2 is hoisted to the top of bridge pier 1 by a lifting device; Platform component 3 is disposed on the outside of pier 1, and platform component 3 is in contact with the outside of pier 1 through stabilizing component 4; The docking component 5 is mounted on the stabilizing component 4. The lifting component 2 is connected to the docking component 5 via a steel wire rope to achieve the hoisting of the platform component 3. The lifting assembly 2 includes a main truss 21, a cantilever beam 26 is installed on the top of the main truss 21, a winch 23 is installed on the top of the cantilever beam 26, and pulleys 22 are installed at both ends of the cantilever beam 26. An electric actuator 24 is installed at the bottom of the main truss 21, and a support leg 25 is installed at the output end of the electric actuator 24; The hoisting equipment lifts the main truss 21 to the top of the pier 1, and the electric push rod 24 pushes out the outrigger 25 so that the outrigger 25 overlaps the top of the two piers 1. Platform component 3 includes an operating platform 31, and a through rod 32 is fitted onto the pier 1; The winch 23 is connected to the docking assembly 5 via a wire rope passing through the pulley 22, so that the operating platform 31 moves up along the pier 1. Then the mandrel 32 passes through the pier 1. A jack 33 is installed on the mandrel 32 via a jack stabilizing beam 34, so that the operating platform 31 is attached to the top of the jack 33. The operating platform 31 consists of a main load-bearing frame and an operating platform surface; The main load-bearing frame consists of I-beam sliding beams and standardized platform truss steel structural components, which are assembled into a "U"-shaped or "gate"-shaped space truss that can cover the pier columns through hexagonal bolt connectors. The operating platform is formed by laying steel plates or grid plates on the upper part of the main frame to create a safe working surface.

[0024] The lifting assembly 2 is lifted above the pier 1 using a lifting device. The outrigger 25 is extended using an electric push rod 24, allowing it to rest on the top of the pier 1. The operating platform 31 is assembled on the ground and fitted onto the outside of the pier 1. Two sets of I-beam sliding beams are connected via a stabilizing assembly 4, which rests against the outside of the pier 1. Simultaneously, the winch 23 is connected to the docking assembly 5 via a wire rope passing through a pulley 22. The winch 23 is remotely controlled to reel in the wire rope, causing the operating platform 31 to move along the pier 1 to a set position via the stabilizing assembly 4. The mandrel 32 is then passed through a pre-drilled hole in the pier 1, and the jack 33 is installed on the mandrel 32 via a jack stabilizing beam 34. 2. Place the operating platform 31 on top of the jack 33, adjust the elevation, and lift the lifting component 2. Begin the reinforcement binding, formwork installation, and concrete pouring of the tie beam. This process can shorten the construction period, reduce project management costs, lower safety risks, and is easy to operate. It avoids potential hazards such as falls from heights, mechanical injuries, lifting injuries, electric shocks, and falling objects that may occur during the installation and dismantling of the operating platform. The use of this device and construction method effectively reduces the probability of safety accidents and effectively reduces the repeated installation and dismantling of the supporting operating platform. It greatly reduces the use of manpower and machinery during construction and speeds up the construction progress of the tie beam.

[0025] Meanwhile, by using the through rod 32 as the main load-bearing component, combined with the jack stabilizing beam 34 and the finely adjustable spiral jack 33, the operating platform 31 can be safely, smoothly, and accurately converted and positioned from dynamic suspension to static rigid support, thus ensuring the accuracy and safety of subsequent construction.

[0026] As shown in the figure, the stabilizing component 4 includes a tie rod 41 installed on the I-beam of the operating platform 31. A pair of guide wheels 43 that contact the outer wall of the pier 1 are movably installed in the middle of the tie rod 41. A first rubber pad 42 is provided on the outside of the guide wheels 43. The outer peripheral surfaces of the guide wheel 43 and the first rubber pad 42 are adapted to the outer peripheral surface of the pier 1; The operating platform 31 is assembled on the ground and located outside the pier 1. The tie rod 41 is installed on the operating platform 31 so that the first rubber pad 42 contacts the outside of the pier 1. The operating platform 31 moves upward along the pier 1 through the guide wheel 43 and the first rubber pad 42.

[0027] The operating platform 31 is assembled on the ground and mounted on the outside of the bridge pier 1. At the same time, the tie rod 41 is installed on two I-beams on the operating platform 31 and located between the two bridge piers 1, thereby improving the overall stability of the operating platform 31. The first rubber pad 42 on the outside of the guide wheel 43 is in contact with the outer wall of the bridge pier 1. The winch 23 remotely controls the operating platform 31 to move up along the outer circumference of the bridge pier 1 through the guide wheel 43 and the first rubber pad 42 via the steel wire rope. During the upward movement of the operating platform 31, the guide wheel 43 limits the operation of the operating platform 31, so that the operating platform 31 always maintains vertical movement and avoids the swing of the operating platform 31 during the upward movement, which may cause it to collide with the bridge pier 1 and damage the bridge pier 1 or the operating platform 31, thereby ensuring the stable operation of the operating platform 31.

[0028] As shown in the figure, a protective cover 45 is fixedly installed on the outside of the pull rod 41, and a ratchet 46 is installed at the end of the guide wheel 43 and sleeved on the outside of the pull rod 41. The docking assembly 5 includes a pad 512 fixed to the outside of the tie rod 41. A beam rod 51 is vertically slidable on the outside of the pad 512 via a stabilizer 511. A tension spring is provided on the top of the pad 512 to pull the beam rod 51. Both ends of the beam 51 are equipped with hooks 52; The outside of the beam 51 is fitted with a locking member 54 located inside the protective cover 45 via a connecting member 53. The inner wall of the locking member 54 is provided with locking teeth. The initial locking element 54 engages with the ratchet 46 through the locking teeth under the action of the tension spring; A U-shaped frame 57 is installed at the bottom of the locking component 54. A guide groove 55 is provided on the side of the U-shaped frame 57. A slider 58 that slides in the guide groove 55 is installed on the inner wall of the protective cover 45. The winch 23 is connected to the hook 52 via a wire rope. The winch 23 winds up the wire rope, causing the beam 51 to be subjected to force and move upward to compress the tension spring, causing the locking member 54 to disengage from the ratchet 46, while the bottom of the stabilizing member 511 contacts the bottom of the pad 512.

[0029] The operating platform 31 is assembled on the ground and located outside the pier 1. The tie rod 41 is installed between the two I-beams of the operating platform 31. The cleats at the bottom of the initial locking member 54 are engaged with the ratchet 46 under the action of the tension spring at the top of the pad 512. At this time, the guide wheel 43 and the first rubber pad 42 cannot rotate and are locked. The winch 23 is connected to the hook 52 through the wire rope and winds up the wire rope. The beam 51 is subjected to tension, which causes the stabilizer 511 to move up along the pad 512 and compress the tension spring, so that the locking member 54 is disengaged from the ratchet 46. The guide wheel 43 and the first rubber pad 42 are unlocked. At the same time, the bottom of the inner wall of the stabilizer 511 contacts the pad 512. At this time, the operating platform 31 can be pulled up along the pier 1 by continuously winding the wire rope by the winch 23.

[0030] The operating platform 31 moves along the pier 1 to the set position and is placed on top of the jack 33. At this time, the wire rope is disconnected from the hook 52, and the beam 51 moves downward under the action of the tension spring, so that the locking teeth on the inner wall of the locking member 54 engage with the ratchet 46, so that the guide wheel 43 is locked with the first rubber pad 42, and the first rubber pad 42 is always in contact with the outer wall of the pier 1. Thus, the stability of the operating platform 31 is improved by the guide wheel 43 and the first rubber pad 42 abutting against the outside of the pier 1, thereby avoiding the phenomenon of shaking of the operating platform 31 during construction.

[0031] As shown in the figure, a support frame 411 is installed at the bottom of the protective cover 45, a T-shaped frame 412 is installed on the support frame 411, and an installation frame 414 is movably installed on the T-shaped frame 412 via a guide rod 415. A second rubber pad 416 is installed on the outside of the installation frame 414. The T-shaped frame 412 and the guide rod 415 are respectively equipped with a second magnet 417 and a first magnet 413 to maintain the corresponding position. The bottom of the U-shaped frame 57 is equipped with an abutment plate 56, and the top of the mounting frame 414 is arc-shaped. When the operating platform 31 moves up to the set position, the wire rope is disconnected from the hook 52, and the locking member 54 engages with the ratchet 46 under the action of the tension spring. The contact plate 56 pushes the mounting bracket 414 and the second rubber pad 416 out to abut against the outside of the pier 1.

[0032] By connecting the wire rope to the hook 52, the winch 23 winds up the wire rope, pulling the beam 51 upward along the pad 512 via the stabilizer 511, causing the locking member 54 to disengage from the ratchet 46, and the contact plate 56 to disengage from the mounting frame 414. At this time, the mounting frame 414 moves towards the mounting frame 414 under the attraction of the second magnet 417 and the first magnet 413, and the operating platform 31 can be moved upward along the pier 1 by the winch 23 continuously winding up the wire rope.

[0033] When the operating platform 31 reaches the set position and is placed on top of the jack 33, the wire rope is disconnected from the hook 52. The beam 51 loses tension and, under the action of the tension spring, the locking part 54 engages with the ratchet 46. As the locking part 54 moves down, it pushes the mounting frame 414 outward through the contact plate 56, causing the second rubber pad 416 to contact the outside of the pier 1, thereby increasing the contact area between the operating platform 31 and the pier 1 and further improving the stability of the operating platform 31.

[0034] Working principle and usage process of this invention: The lifting assembly 2 is lifted by the lifting equipment and placed above the pier 1. The outrigger 25 is pushed out by the electric push rod 24 so that the outrigger 25 overlaps the top of the pier 1. The tie rod 41 is installed on the two I-beams on the operating platform 31 and is located between the two piers 1, thereby improving the overall stability of the operating platform 31. The first rubber pad 42 outside the guide wheel 43 contacts the outer wall of the pier 1. The locking teeth at the bottom of the initial locking member 54 are engaged with the ratchet 46 under the action of the tension spring at the top of the pad 512. At this time, the guide wheel 43 and the first rubber pad 42 cannot rotate and are locked. The winch 23 is connected to the hook 52 via a wire rope. By winding the wire rope, the beam 51 is subjected to tension, causing the stabilizer 511 to move upward along the pad 512 and compress the tension spring. This causes the locking member 54 to disengage from the ratchet 46, and the guide wheel 43 to be unlocked from the first rubber pad 42. At the same time, the bottom of the inner wall of the stabilizer 511 contacts the pad 512. The winch 23 is remotely controlled to pull the operating platform 31 upward along the outer circumference of the pier 1 via the wire rope. During the upward movement of the operating platform 31, the guide wheel 43 limits the operation platform 31, ensuring that the operating platform 31 always moves vertically and preventing the operating platform 31 from swinging during the upward movement and impacting the pier 1, which could damage the pier 1 or the operating platform 31. The operating platform 31 moves to the set position, the through rod 32 passes through the reserved hole of the pier 1, the jack 33 is installed on the through rod 32 through the jack stabilizing beam 34, and the operating platform 31 is placed on top of the jack 33. After adjusting the elevation, the wire rope is disconnected from the hook 52 and the lifting assembly 2 is lifted away. The beam 51 moves downward under the action of the tension spring, so that the locking teeth on the inner wall of the locking part 54 engage with the ratchet 46, so that the guide wheel 43 is locked with the first rubber pad 42, and the first rubber pad 42 is always in contact with the outer wall of the pier 1. Thus, the guide wheel 43 and the first rubber pad 42 abut against the outside of the pier 1, thereby improving the stability of the operating platform 31 and avoiding the phenomenon of shaking of the operating platform 31 during construction. During the downward movement of the locking part 54, the mounting frame 414 is pushed outward by the contact plate 56, so that the second rubber pad 416 abuts against the outside of the pier 1, thereby increasing the contact area between the operating platform 31 and the pier 1. The construction of the tie beams, including rebar tying, formwork installation, and concrete pouring, has been initiated. This process can shorten the construction period, reduce project management costs, lower safety risks, and is easy to operate. It also avoids potential hazards such as falls from heights, mechanical injuries, lifting injuries, electric shocks, and falling objects that may occur to personnel during the installation and dismantling of the work platform.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bridge self-lifting tie beam support system, comprising bridge piers (1), characterized in that, Also includes: Lifting assembly (2), which is hoisted to the top of the pier (1) by a lifting device; Platform component (3), the platform component (3) is disposed outside the pier (1), the platform component (3) abuts against the outside of the pier (1) by a stabilizing component (4); The docking component (5) is mounted on the stabilizing component (4), and the lifting component (2) is connected to the docking component (5) by a steel wire rope to realize the hoisting of the platform component (3); The lifting assembly (2) includes a main truss (21), a cantilever beam (26) is installed on the top of the main truss (21), a winch (23) is installed on the top of the cantilever beam (26), and pulleys (22) are installed at both ends of the cantilever beam (26). The bottom of the main truss (21) is equipped with an electric actuator (24), and the output end of the electric actuator (24) is equipped with a support leg (25). The hoisting equipment lifts the main truss (21) to the top of the pier (1), and the electric push rod (24) pushes out the outrigger (25) so that the outrigger (25) overlaps the top of the two piers (1); The platform component (3) includes an operating platform (31), and a through rod (32) is fitted on the pier (1). The winch (23) is connected to the docking assembly (5) by passing a wire rope through a pulley (22), so that the operating platform (31) moves up along the pier (1) and then the mandrel (32) passes through the pier (1). A jack (33) is installed on the mandrel (32) through a jack stabilizing beam (34), so that the operating platform (31) is attached to the top of the jack (33).

2. The bridge self-lifting tie beam support system according to claim 1, characterized in that: The operating platform (31) is composed of a main load-bearing frame and an operating platform surface; The main load-bearing frame consists of I-beam sliding beams and standardized platform truss steel structural components, which are assembled into a "U"-shaped or "gate"-shaped space truss that can cover the pier columns through hexagonal bolt connectors. The operating platform is formed by laying steel plates or grid plates on the upper part of the main frame to create a safe working surface.

3. The bridge self-lifting tie beam support system according to claim 1, characterized in that: The stabilizing component (4) includes a tie rod (41) mounted on the I-beam of the operating platform (31). A pair of guide wheels (43) that contact the outer wall of the pier (1) are movably mounted on the middle of the tie rod (41). A first rubber pad (42) is provided on the outside of the guide wheels (43).

4. The bridge self-lifting tie beam support system according to claim 3, characterized in that: The outer circumferential surface of the guide wheel (43) and the first rubber pad (42) is adapted to the outer circumferential surface of the pier (1); The operating platform (31) is assembled on the ground and located outside the pier (1). The tie rod (41) is installed on the operating platform (31) so that the first rubber pad (42) contacts the outside of the pier (1). The operating platform (31) moves upward along the pier (1) via the guide wheel (43) and the first rubber pad (42).

5. The bridge self-lifting tie beam support system according to claim 3, characterized in that: The pull rod (41) is fixedly fitted with a protective cover (45), and the end of the guide wheel (43) is fitted with a ratchet (46) that is sleeved on the outside of the pull rod (41).

6. The bridge self-lifting tie beam support system according to claim 5, characterized in that: The docking assembly (5) includes a pad (512) fixed to the outside of the pull rod (41), and a beam rod (51) is vertically slidable on the outside of the pad (512) through a stabilizer (511). A tension spring for pulling the beam rod (51) is provided on the top of the pad (512). Both ends of the beam (51) are equipped with hooks (52).

7. The bridge self-lifting tie beam support system according to claim 6, characterized in that: The beam (51) is fitted with a locking member (54) inside the protective cover (45) via a connecting member (53), and the inner wall of the locking member (54) is provided with locking teeth. In the initial state, the locking member (54) engages with the ratchet (46) through the locking teeth under the action of the tension spring; The bottom of the locking member (54) is equipped with a U-shaped frame (57), and a guide groove (55) is provided on the side of the U-shaped frame (57). The inner wall of the protective cover (45) is equipped with a slider (58) that slides in the guide groove (55).

8. The bridge self-lifting tie beam support system according to claim 7, characterized in that: The winch (23) is connected to the hook (52) via a wire rope. The winch (23) winds up the wire rope, causing the beam (51) to be subjected to force and move upward to compress the tension spring, causing the locking part (54) to disengage from the ratchet (46), and the bottom of the stabilizing part (511) to contact the bottom of the pad (512).

9. The bridge self-lifting tie beam support system according to claim 7, characterized in that: The bottom of the protective cover (45) is equipped with a support frame (411), a T-shaped frame (412) is installed on the support frame (411), and an installation frame (414) is movably installed on the T-shaped frame (412) via a guide rod (415). A second rubber pad (416) is installed on the outside of the installation frame (414). The T-shaped frame (412) and the guide rod (415) are respectively equipped with a second magnet (417) and a first magnet (413) to maintain the corresponding position.

10. The bridge self-lifting tie beam support system according to claim 9, characterized in that: The bottom of the U-shaped frame (57) is equipped with an abutment plate (56), and the top of the mounting frame (414) is arc-shaped; The operating platform (31) moves up to the set position, the wire rope is disconnected from the hook (52), the locking member (54) engages with the ratchet (46) under the action of the tension spring, and the abutment plate (56) pushes the mounting bracket (414) and the second rubber pad (416) out to abut against the outside of the pier (1).

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