Reinforcing device for light double-guide-rail bridge girder erection machine in extreme weather and using method of reinforcing device

Abstract

The invention discloses a reinforcing device for a light double-guide-rail bridge girder erection machine in extreme weather and a using method of the reinforcing device. The reinforcing device comprises a cable, an adjustable tightening type storage device, a special protection pad and a hook matched with the cable, and is matched with a JQGs110t-30m type bridge girder erection machine. The invention further discloses a using method of the device. The using method comprises the five core steps of preparation before reinforcement, laying of the special protection pad, automatic hooking and tightening of the cable wind cable, inspection after reinforcement and reinforcement relieving. The device and method are suitable for the non-working state of the bridge girder erection machine (main guide girders are not suspended and supporting legs all make contact with the bridge floor) and the extreme weather of grade 10 or below, high-place operation risks are eliminated through automatic operation, the model selection bearing force calculation and verification of the cable wind cable are conducted, the special protection pad can protect the precast beam structure, safe, rapid and efficient reinforcement is achieved, and the safety and reliability of the bridge girder erection machine are improved. The stability of the bridge girder erection machine in extreme weather is guaranteed, and the construction cost is reduced.

Description

Technical Field

[0001] This invention relates to the hydraulic engineering field within the broader field of hydropower, particularly to traffic bridges constructed during the preparatory phase of hydropower projects, including permanent and temporary bridges. It also relates to a reinforcement device for a lightweight double-rail bridge erecting machine in extreme weather conditions and its method of use. Background Technology

[0002] According to relevant materials, there are currently almost no reinforcement devices for lightweight double-guide bridge erecting machines in extreme weather conditions. This is because in the past few years, the market for bridge erecting machines has mainly focused on heavy-duty models. With the rapid development of my country's industry over the past decade, the bridge erecting machines used in engineering construction have also been continuously "upgraded." In order to meet the booming development of the domestic engineering industry, bridge erecting machines are constantly being innovated. In order to gain more market share, bridge erecting machines have begun to follow the route of lightweight and high efficiency. Lightweight double-guide bridge erecting machines have only gradually become popular in recent years.

[0003] The lightweight double-guide bridge erecting machine is lighter than the traditional bridge erecting machine. Therefore, it is difficult to ensure that the lightweight double-guide bridge erecting machine will not overturn in extreme weather conditions. Therefore, adjustable tensioning storage devices are installed on both sides of the lightweight double-guide bridge erecting machine. After being tightened by hooks of the cable wind rope, the lightweight double-guide bridge erecting machine is safe and stable in extreme weather conditions.

[0004] If a lightweight double-guide bridge erecting machine is disassembled before extreme weather arrives and then reassembled after the extreme weather dissipates, it will not only increase costs but also delay the construction period, which is not conducive to the safe, orderly and rapid construction of the project. Summary of the Invention

[0005] To address the problems encountered on engineering sites, this invention provides a reinforcement device and its application method for lightweight double-guide rail bridge erecting machines in extreme weather conditions. The purpose of this invention is to ensure the safety and stability of lightweight double-guide rail bridge erecting machines by taking reinforcement measures during extreme weather.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a reinforcement device for a lightweight double-rail bridge erecting machine in extreme weather, comprising a guy cable, an adjustable tensioning retractor, a special protective pad, and a guy cable matching hook; the adjustable tensioning retractor is fixedly installed on the top of the main beam of the bridge erecting machine, and the guy cable is equipped with the matching hook at both ends of the guy cable, the adjustable tensioning retractor being used to drive the matching hooks of the guy cables on both sides to automatically hook together and complete the tightening action; the special protective pad is laid on the contact surface between the guy cable and the precast beam structure, and this reinforcement device is used in the non-working state of the bridge erecting machine and in extreme weather of level 10 and below; the guy cable is of model 2φ40 (6*19), and the bridge erecting machine is of model JQGs110t-30m; the guy cables are spaced apart along the bridge direction of the bridge erecting machine, the spacing between two adjacent guy cables is 18.3m, and a total of two guy cables are provided.

[0007] This invention first uses a simplified hand-drawn sketch to depict the reinforcement device for a lightweight double-rail bridge erecting machine in extreme weather conditions. Then, using CAD, a preliminary design drawing of the reinforcement device for extreme weather conditions is created. Next, using Excel spreadsheets and referring to relevant technical specifications and calculation manuals, formulas are entered into the Excel spreadsheets to calculate the stress on the reinforcement device for extreme weather conditions. Through the stress calculation analysis of the reinforcement device in extreme weather conditions, it is determined that two φ37 (6*19) type guy cables should be used, installed every 18.3m along the bridge direction, for a total of two cables. The verification result T... zs >G f However, it is at a critical value. In order to meet the various complex working conditions and emergencies encountered by the bridge erecting machine under extreme weather conditions and to ensure the safety and stability of the JQGs110t-30m bridge erecting machine in non-working state under level 10 extreme weather conditions, the 2φ40 (6*19) model of cable guy cable, which is one level larger than the critical value, was finally selected as the stability reinforcement device for the JQGs110t-30m bridge erecting machine in non-working state under level 10 extreme weather conditions. Finally, the final draft of the reinforcement device design for the lightweight double-guide rail bridge erecting machine in extreme weather was drawn using CAD. Before the precast beam erection construction, the precast beam erection technology was briefed according to the steps of precast beam erection sequence, precast beam installation, installation process precautions, and instructions on the bridge erecting machine for special beam spans.

[0008] To further optimize this invention, the following technical solutions may be preferred: Preferably, the adjustable tension retractor includes a rotatable central shaft, bearings, a spiral locator, perforated sidewalls, and a fully perforated base plate. Two bearings are welded and fixed to both sides of the rotatable central shaft. The rotatable central shaft is tightly welded and fixed to the perforated sidewalls, ensuring the safe and normal operation of the adjustable tension retractor. The spiral locator is located inside the rotatable central shaft and is designed with a groove equal to the outer diameter of the guy cable. During the tightening operation of the adjustable tension retractor, it facilitates the timely return of the guy cable to its original position, preventing misalignment and entanglement. The spiral locator is welded and fixed inside the rotatable central shaft. The perforated sidewalls have the same thickness as the other sidewalls of the adjustable tension retractor and are firmly welded to them, with welds meeting relevant specifications. The fully perforated base plate is located at the bottom of the adjustable tension retractor and is used for the guy cable during extension and retraction.

[0009] Preferably, the special protective pad includes a foldable line, a frosted surface, and a smooth surface. The foldable line is located on the center line of the long side of the special protective pad, parallel to the short side, and is used to divide the folding area during use. Only one side of the special protective pad is frosted, and this frosted surface is adhered to the bridge structure surface without contaminating the material. This surface is used to fix the special protective pad to the bridge structure surface, preventing damage to the edges of the guy cables after the bridge structure is tightened. All other surfaces of the special protective pad, except for the frosted surface, are smooth, which facilitates the expansion and contraction of the guy cables.

[0010] Preferably, the guy cable hook is made of lifting steel. The guy cable hook includes a side wall with an elliptical hole, which consists of two φ50mm diameter round holes connected together. The longer side of the elliptical hole is 100mm. The side wall with the elliptical hole in the guy cable hook is designed to accommodate two φ40 (6*19) type guy cables. The side wall with the elliptical hole is 40mm thick. The steel used for the guy cable hook meets the relevant requirements for lifting and hoisting.

[0011] Preferably, the adjustable tensioning retractor tightens the guy wire hooks on both sides after they are hooked together when the guy wire is started to retract. The guy wire hooks are connected to the guy wires through the side wall of the hook with the elliptical hole, and then fixed by the guy wire fixer. Displacement marks are provided to prevent the guy wire hooks from loosening and slipping.

[0012] Preferably, all sidewalls of the adjustable storage unit are of equal thickness, and all sidewalls are firmly welded with welds that meet relevant requirements. The surface of the adjustable storage unit is coated with yellow anti-rust paint and marked with the equipment number. Regular maintenance is carried out and maintenance records are kept.

[0013] Preferably, the special protective pad is made of elastic rubber, and only one side of the special protective pad is frosted. The frosted side is adhered to the surface of the bridge structure and there is no contaminating material. All other sides of the special protective pad are smooth except for the frosted side.

[0014] A method for using a lightweight dual-rail bridge erecting machine in extreme weather, based on the aforementioned reinforcement device, includes the following steps: (1) Preparations before reinforcement: Confirm that the JQGs110t-30m bridge erecting machine is in a non-working state, the main beam is not suspended and all legs are in effective contact with the bridge deck, and the external wind force is ≤10; check the integrity and functionality of the guy cables, adjustable tension storage devices, special protective pads and guy cable matching hooks; complete the technical briefing according to the precast beam erection sequence, installation requirements and special beam span instructions; (2) Laying of special protective pads: According to the preset contact position between the guy cable and the precast beam, fold the special protective pads along the foldable line, and stick and fix them with the frosted side facing the surface of the precast beam structure to ensure that the corner areas of the precast beam that the guy cable may contact are covered. (3) Hooking and tightening of guy cables: The operator in the bridge erecting machine cab starts the adjustable tensioning receiver, and the drive mechanism drives the guy cables to extend to the maximum value; the personnel below the bridge assist in confirming the hook alignment, and the adjustable tensioning receiver drives the hooks of the guy cables on both sides to automatically engage, and the anti-detachment buckle automatically locks; the operator starts the tightening function of the receiver through the button, and the guy cables return to the preset tension under the guidance of the spiral locator; (4) Post-reinforcement inspection: Confirm the tension of the guy cable, the effectiveness of the hook locking and the position of the special protective pad, and check the operation of the adjustable tensioning device to ensure that there is no loosening, offset or structural interference. (5) Reinforcement and release: After the extreme weather dissipates, the operator starts the adjustable tensioning device to loosen the guy cable, opens the anti-detachment buckle to separate the matching hook, retracts the guy cable into the device, removes the special protective pad and stores it properly.

[0015] Preferably, in step (3), the tightening speed of the adjustable tensioning device is controlled at a constant speed, and it automatically stops when the tension of the guy cable reaches a preset value. The preset tension is set based on the force calculation results of the 2φ40(6*19) model guy cable, satisfying T zs >G f It also provides safety redundancy.

[0016] Preferably, the technical briefing in step (1) includes the precast beam erection sequence, installation process, precautions, and special requirements for the bridge erection machine to erect special beam spans, so as to ensure that the operators master the key points of the equipment.

[0017] Preferably, in step (5), after the special pad is removed, the surface integrity needs to be checked. If there is wear or contamination, it needs to be replaced in time to ensure the effect of the next use.

[0018] The beneficial effects of this invention are mainly reflected in the following aspects: A reinforcement device suitable for lightweight double-rail bridge erecting machines in extreme weather conditions has the following significant advantages compared to existing technologies: (1) Completely eliminate the safety risks of working at height: The adjustable tensioning device at the top of the main beam enables the automatic hooking and tightening of the hooks on both sides of the wind cable, eliminating the need for manual climbing operations. This solves the problem of high risk factor of working at height when installing existing reinforcement devices, greatly improves the safety and convenience of operation, and ensures that reinforcement can be completed quickly before extreme weather arrives.

[0019] (2) Precisely adapt to the safety requirements of the target bridge erecting machine: Designed for the non-working state of the JQGs110t-30m bridge erecting machine (the main beam is not suspended and the outriggers are in contact with the bridge surface) and extreme weather scenarios of level 10 and below, the cable wind cable is selected as 2φ40(6*19) model (verified by stress calculation to meet the stability requirements under complex working conditions and sudden situations, and avoid critical value risks). Two cables are laid 18.3m along the bridge direction, which can provide uniform lateral tensile support, ensuring the structural safety and stability of the bridge erecting machine in this scenario, and filling the gap in the special extreme weather reinforcement scheme for this type of bridge erecting machine.

[0020] (3) Balancing equipment protection and operational efficiency: Special protective pads are laid on the contact surface between the guy cable and the precast beam, which can effectively prevent damage to the edges and corners of the precast beam when the guy cable is tightened, and ensure the appearance quality of the precast beam; at the same time, the automated operation of the adjustable tightening device simplifies the reinforcement process, shortens the reinforcement time, and further adapts to the emergency reinforcement needs before extreme weather. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, and the obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

[0022] Figure 1 This is a longitudinal cross-sectional view of the reinforcement device for the lightweight double-rail bridge erecting machine in extreme weather conditions according to the present invention.

[0023] Figure 2 This is a cross-sectional view of the reinforcement device AA for the lightweight double-rail bridge erecting machine in extreme weather conditions according to the present invention.

[0024] Figure 3 This is a three-dimensional structural diagram of the adjustable tightening storage device in the reinforcement device for the lightweight double-rail bridge erecting machine in extreme weather conditions according to the present invention.

[0025] Figure 4 This is a front view schematic diagram of the adjustable tensioning housing in the reinforcement device for the lightweight double-rail bridge erecting machine in extreme weather of the present invention.

[0026] Figure 5 This is a bottom-view structural diagram of the adjustable tensioning housing in the reinforcement device for the lightweight double-rail bridge erecting machine in extreme weather conditions according to the present invention.

[0027] Figure 6 This is a schematic diagram of the adjustable tensioning housing structure of the lightweight double-rail bridge erecting machine in extreme weather reinforcement device from a southeast view.

[0028] Figure 7 This is a front view schematic diagram of the special protective pad in the reinforcement device for the lightweight double-rail bridge erecting machine in extreme weather according to the present invention.

[0029] Figure 8 This is a schematic diagram of the three-dimensional structure of the special protective pad in the reinforcement device for the lightweight double-rail bridge erecting machine in extreme weather conditions according to the present invention.

[0030] Figure 9 This is a schematic diagram of the detailed structure of the special protective pad in the reinforcement device for the lightweight double-rail bridge erecting machine in extreme weather conditions according to the present invention.

[0031] Figure 10 This is a three-dimensional structural diagram of the cable hook in the reinforcement device for the lightweight double-rail bridge erecting machine in extreme weather conditions according to the present invention.

[0032] Figure 11 This is a schematic diagram of the detailed structure of the cable hook in the reinforcement device for the lightweight double-rail bridge erecting machine in extreme weather conditions according to the present invention.

[0033] Among them, 1-Gateway, 2-Adjustable tension storage device, 3-Special protective pad, 4-Gateway matching hook, 5-Rotating central shaft, 6-Bearing, 7-Screw locator, 8-Side wall with holes, 9-Fully hollowed-out base plate, 10-Foldable line, 11-Frosted surface (adhesive to the bridge structure surface and free from contamination), 12-Smooth surface (facilitates the extension and sliding of the cableway), 13-Side wall with elliptical holes. Detailed Implementation

[0034] 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.

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention.

[0036] Example 1: For details, please refer to Figure 1-2 A reinforcement device for a lightweight double-rail bridge erecting machine in extreme weather conditions. Based on the bridge length and stress calculation analysis of the reinforcement device under extreme weather conditions, it is determined that two φ37 (6*19) type guy cables should be installed every 18.3m along the bridge direction, for a total of two cables. The verification result T zs >G f However, the current value is critical. To meet the various complex working conditions and emergencies encountered by the bridge erecting machine under extreme weather conditions and to ensure the safety and stability of the JQGs110t-30m bridge erecting machine in its non-working state during level 10 extreme weather, a 2φ40 (6*19) type guy cable, which is one level larger than the critical value, was ultimately selected as the stability reinforcement device for the JQGs110t-30m bridge erecting machine in its non-working state during level 10 extreme weather. A set of lightweight double-rail bridge erecting machine reinforcement devices for extreme weather is installed every 18.3m. Each reinforcement device includes two adjustable tensioning retractors, each of which accommodates two φ40 (6*19) type guy cables.

[0037] For details, please refer to Figure 3-6 The adjustable tensioning retractor is made of 300mm cubic steel with holes on both side walls, which are firmly welded to the rotatable central shaft. The rotatable central shaft and the holed side walls of the adjustable tensioning retractor are connected by welded fixed bearings. Each adjustable tensioning retractor has a total of 2 bearings. A spiral locator is designed at the center line of the rotatable central shaft. By designing a groove with the same outer diameter as the guy cable, it is easy for the guy cable to return to its position in time during the tightening operation of the adjustable tensioning retractor, thus preventing the guy cable from being misaligned and tangled. Each adjustable tensioning retractor is equipped with one spiral locator.

[0038] For details, please refer to Figure 7-9 The special protective pad is made of elastic rubber. The foldable line is located on the center line of the long side of the special protective pad and is parallel to the short side of the special protective pad. It is used to divide the folding area during the use of the special protective pad. The special protective pad is rectangular in shape in its natural state. It has only one frosted surface. The frosted surface is adhered to the surface of the bridge structure and is free of contaminating materials. It is used to fix the special protective pad to the surface of the bridge structure to prevent the guy cables from damaging the edges and corners after the bridge structure is tightened. All other surfaces of the special protective pad except for the frosted surface are smooth, which facilitates the expansion and contraction of the guy cables.

[0039] For details, please refer to Figure 10-11The guy cable hook includes a sidewall with an elliptical hole, which consists of two φ50mm diameter circular holes connected together. The longer side of the elliptical hole is 100mm. The sidewall with the elliptical hole in the guy cable hook can accommodate two φ40 (6*19) size guy cables. The wall thickness of the sidewall with the elliptical hole is 40mm. The hook head of the guy cable hook has an inner circle with a diameter of φ60mm and an outer circle with a diameter of φ140mm. The total length of a single guy cable hook is 270mm. The steel used for the guy cable hook meets the relevant requirements for lifting and hoisting.

[0040] In this embodiment, the bridge erecting machine is selected as JQGs110t-30m type, and the reinforcement device is adapted to this model of bridge erecting machine. The specific implementation steps are as follows: 1. Preparations before reinforcement: Confirm that the main beam of the bridge erecting machine is not suspended in the air, and that the front, middle, and rear outriggers are in effective contact with the bridge deck. Confirm that the wind force is ≤10 through meteorological monitoring equipment. Check that the 2φ40 (6*19) model guy cables are undamaged, the adjustable tensioning receiver drive mechanism is normal, the special protective pads are not aged, and the guy cable hook anti-detachment buckles are flexible. Explain to the operators the precast beam erection sequence, key points of device operation, and precautions for reinforcement of special beam spans.

[0041] 2. Laying of special protective pads: According to the preset contact position between the guy cable and the precast beam, fold the special protective pads along the foldable line to the appropriate shape, and stick them to the corners of the precast beam with the frosted side facing them, ensuring that the protective pads completely cover the contact area without any offset or omission.

[0042] 3. Cable hooking and tightening: The operator presses the start button of the adjustable tensioning retractor in the bridge erecting machine cab. The drive mechanism drives the rotatable central shaft to rotate, and the cable extends to its maximum value through the fully hollowed-out bottom plate. After the personnel below the bridge visually confirm that the hooks of the cable on both sides are accurately aligned, the retractor drives the hooks to automatically engage, and the anti-detachment buckle locks immediately. The operator presses the tightening button again, and the rotatable central shaft rotates in the opposite direction. The spiral locator guides the cable back to its position in an orderly manner through the groove, and tightens it at a uniform speed to the preset tension (based on force calculation and with a safety redundancy). The retractor then automatically stops operating.

[0043] 4. Post-reinforcement inspection: On-site inspection shows that the guy cables are not loose or tangled, the hook anti-detachment buckles are fully locked, and the special protective pads are tightly attached to the precast beams without displacement; the monitoring module of the receiver confirms that the operation status is normal, with no abnormal noise or structural interference, ensuring the stability of the bridge erecting machine under extreme weather conditions.

[0044] 5. Reinforcement Release: After the extreme weather dissipates and meteorological monitoring shows that the wind force has dropped to a safe level, the operator activates the adjustable tension retractor's relaxation function, and the guy cable slowly releases tension; manually open the anti-detachment buckle, separate the guy cable's matching hook, and the retractor will retract the guy cable and orderly wind it around the rotatable central shaft; remove the special protective pad, check that the frosted surface is free of contamination and severe wear, and properly store it in the special toolbox for future use.

[0045] The beneficial effects of this invention are as follows: the device is compatible with the JQGs110t-30m bridge erecting machine, and its stability is ensured through stress calculation and selection; the method eliminates the risks of working at heights through automated operation, the steps are clear and the operation is convenient, the special protective pads protect the precast beam structure, the reinforcement and removal process is efficient, the construction cost is reduced, and the reinforcement needs under extreme weather conditions are met, which has significant practical value and promotion significance.

[0046] 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 reinforcement device for a lightweight double-rail bridge erecting machine in extreme weather conditions, characterized in that, The system includes guy cables, adjustable tension retractors, special protective pads, and guy cable hooks. The adjustable tension retractor is fixedly installed on the top of the main beam of the bridge erecting machine. The guy cables are equipped with hooks at both ends. The adjustable tension retractor is used to drive the hooks on both sides of the guy cables to automatically hook together and complete the tightening action. The special protective pad is laid on the contact surface between the guy cables and the precast beam structure. This reinforcement device is used when the bridge erecting machine is not in operation and in extreme weather conditions of level 10 or below. The guy cables are of type 2φ40 (6*19), and the bridge erecting machine is type JQGs110t-30m. The guy cables are spaced apart along the bridge direction of the bridge erecting machine, with a spacing of 18.3m between adjacent guy cables. A total of two guy cables are installed.

2. The reinforcement device for a lightweight double-rail bridge erecting machine in extreme weather as described in claim 1, characterized in that, The special protective pad includes a foldable line, a frosted surface, and a smooth surface. The foldable line is located on the center line of the long side of the special protective pad and is parallel to the short side of the special protective pad. It is used to divide the folding area during use. Only one side of the special protective pad is frosted. The frosted surface is adhered to the surface of the bridge structure and is free of contaminating materials. It is used to fix the special protective pad to the surface of the bridge structure to prevent the guy cables from damaging the edges after the bridge structure is tightened. All other sides of the special protective pad except for the frosted surface are smooth, which facilitates the expansion and contraction of the guy cables.

3. The reinforcement device for a lightweight double-rail bridge erecting machine in extreme weather as described in claim 1, characterized in that, The adjustable tensioning retractor includes a rotatable central shaft, bearings, a spiral locator, perforated sidewalls, and a fully perforated base plate. Two bearings are welded and fixed to both sides of the rotatable central shaft. The rotatable central shaft is tightly welded and fixed to the perforated sidewalls, ensuring the safe and normal operation of the adjustable tensioning retractor. The spiral locator is located inside the rotatable central shaft and has a groove with the same outer diameter as the guy cable. During the tightening operation of the adjustable tensioning retractor, this facilitates the timely return of the guy cable to its original position, preventing misalignment and entanglement. The perforated sidewalls have the same thickness as the other sidewalls of the adjustable tensioning retractor and are firmly welded to them. The fully perforated base plate is located at the bottom of the adjustable tensioning retractor and is used when the guy cable is extended or retracted.

4. The reinforcement device for a lightweight double-rail bridge erecting machine in extreme weather as described in claim 1, characterized in that, The cable hook includes a sidewall with an elliptical hole, which consists of two φ50mm diameter round holes connected together. The long side of the elliptical hole is 100mm, and the wall thickness of the sidewall with the elliptical hole is 40mm.

5. A reinforcement device for a lightweight double-rail bridge erecting machine in extreme weather conditions according to claim 1, characterized in that, When the adjustable tensioning device is activated to retract the wind cable, it hooks the wind cable hooks on both sides together and tightens them. The wind cable hooks are connected to the wind cable through the side wall of the hook with an elliptical hole, and then fixed by the wind cable fixing device. Displacement marks are provided to prevent the wind cable hooks from loosening and slipping.

6. A method for using a lightweight double-rail bridge erecting machine in extreme weather, characterized in that, Based on the reinforcement device according to any one of claims 1-5, the method includes the following steps: (1) Preparations before reinforcement: Confirm that the JQGs110t-30m bridge erecting machine is in a non-working state, the main beam is not suspended and all legs are in effective contact with the bridge deck, and the external wind force is ≤10; check the integrity and functionality of the guy cables, adjustable tension storage devices, special protective pads and guy cable matching hooks; complete the technical briefing according to the precast beam erection sequence, installation requirements and special beam span instructions; (2) Laying of special protective pads: According to the preset contact position between the guy cable and the precast beam, fold the special protective pads along the foldable line, and stick and fix them with the frosted side facing the surface of the precast beam structure to ensure that the corner areas of the precast beam that the guy cable may contact are covered. (3) Hooking and tightening of guy cables: The operator in the bridge erecting machine cab starts the adjustable tensioning receiver, and the drive mechanism drives the guy cables to extend to the maximum value; the personnel below the bridge assist in confirming the hook alignment, and the adjustable tensioning receiver drives the hooks of the guy cables on both sides to automatically engage, and the anti-detachment buckle automatically locks; the operator starts the tightening function of the receiver through the button, and the guy cables return to the preset tension under the guidance of the spiral locator; (4) Post-reinforcement inspection: Confirm the tension of the guy cable, the effectiveness of the hook locking and the position of the special protective pad, and check the operation of the adjustable tensioning device to ensure that there is no loosening, offset or structural interference. (5) Reinforcement and release: After the extreme weather dissipates, the operator starts the adjustable tensioning device to loosen the guy cable, opens the anti-detachment buckle to separate the matching hook, retracts the guy cable into the device, removes the special protective pad and stores it properly.

7. The method for using a lightweight double-rail bridge erecting machine in extreme weather as described in claim 6, characterized in that, In step (3), the tightening speed of the adjustable tensioning device is controlled at a constant speed, and it automatically stops when the tension of the guy cable reaches the preset value. The preset tension is set based on the force calculation results of the 2φ40(6*19) model guy cable, satisfying T zs >G f It also provides safety redundancy.

8. A method for using a lightweight double-rail bridge erecting machine in extreme weather as described in claim 6, characterized in that, The technical briefing in step (1) includes the precast beam erection sequence, installation process, precautions, and special requirements for the bridge erection machine to erect special beam spans, ensuring that operators master the key points of using the equipment.

9. A method for using a lightweight double-rail bridge erecting machine in extreme weather as described in claim 6, characterized in that, In step (5), after the special pad is removed, the surface integrity needs to be checked. If there is wear or contamination, it needs to be replaced in time to ensure the effect of the next use.

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