Self-propelled beam body maintenance formwork and method of use thereof

Abstract

The application discloses a self-propelled beam body maintenance mold frame and a use method thereof, and belongs to the technical field of bridge construction. The mold frame comprises a support frame crossing the beam body, a pair of hinged hanging beams rotatable on the lateral sides of the support frame, a mold frame opening and closing mechanism for driving the opening and closing of the hanging beams, a maintenance mechanism arranged on the inner side of the hanging beams for covering the side surface and the bottom surface of the beam body, and a walking mechanism for driving the mold frame to move along the longitudinal direction of the beam body. The maintenance mechanism comprises a flexible maintenance layer and a maintenance spray head, and after being closed, the maintenance mechanism and an end closure frame body jointly form a fully-closed maintenance space. In use, the mold frame walks along the track to a working position, the hanging beams are closed and the end portions are closed to form a closed space, and spraying maintenance is started; after the maintenance is completed, the hanging beams are unfolded, and the mold frame autonomously passes through a hole to a next working position. The application realizes 360-degree dead-angle-free moisture and heat preservation maintenance of the beam body, significantly reduces the water evaporation and high-altitude operation risks, and can flexibly adapt to different beam length changes, has high construction efficiency and high universality.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, and in particular to a self-propelled beam curing formwork and its usage method. Background Technology

[0002] With the rapid development of global infrastructure construction, bridge engineering is evolving towards longer spans, higher piers, and more complex structures. According to statistics from the International Association for Bridge and Structural Engineering (IABSE), the number of bridges with piers exceeding 100 meters globally has increased by over 40% in the past decade, with China leading this trend with mega-projects accounting for 60% (such as the Beipanjiang Bridge and the Shanghai-Kunming High-Speed ​​Railway bridge complex). However, this contrasts sharply with the lagging development of bridge maintenance technology—traditional maintenance processes, primarily relying on manual watering and localized spraying, are ill-suited to the demands of modern, sophisticated bridge structural maintenance. A 2022 report by the World Road Association (PIARC) indicates that inadequate maintenance leading to concrete carbonization, crack propagation, and other defects causes approximately $12 billion in economic losses globally annually, with the "maintenance blind spots" caused by limited working space on high-pier bridges being particularly prominent.

[0003] Current mainstream maintenance techniques suffer from three major drawbacks: First, the moisture evaporation rate is as high as 70% or more (NCHRP 2019 research data), which cannot meet the requirements of continuous hydration reaction in concrete, leading to insufficient concrete strength development and increased risk of cracking. Second, high-pier bridges rely on suspended platforms or climbing equipment for manual maintenance, posing serious safety risks, and the maintenance coverage is usually less than 50%, leaving many blind spots on the sides and bottom of the beam. Third, they lack environmental adaptability; in strong winds at high piers, the surface temperature of the beam changes drastically, easily triggering temperature stress cracks. Although there are improved solutions in existing technologies such as the German "air-supported membrane curing system" and the Japanese "self-climbing intelligent maintenance robot," none of them achieve closed-loop control of the entire beam, and the equipment is complex and costly, making widespread adoption difficult.

[0004] Therefore, there is an urgent need to develop a self-propelled beam maintenance formwork that integrates flexible full-wrap sealing, microenvironment control, and self-propelled through-hole function to solve problems such as rapid moisture evaporation, low maintenance coverage, and high risk of high-altitude operations in existing maintenance processes. Summary of the Invention

[0005] In view of this, the purpose of this invention is to provide a self-propelled beam maintenance formwork and its usage method, aiming to solve the technical problems of low maintenance coverage, rapid moisture evaporation, lack of fully enclosed maintenance environment, and low efficiency of cross-span operations in high-pier bridges.

[0006] The present invention provides a self-propelled beam curing formwork, comprising:

[0007] A support frame is configured to extend longitudinally along the beam and span across the beam;

[0008] Multiple pairs of hanging beams are hinged in pairs to the lateral sides of the support frame and are configured to rotate relative to the support frame in the vertical plane.

[0009] A formwork opening and closing mechanism is connected between the support frame and the hanging beam, and is used to drive the hanging beam to switch between a closed state close to the beam and an unfolded state away from the beam.

[0010] A maintenance mechanism is installed on the inner side of the hanging beam to cover the sides and bottom of the beam in the closed state, so as to form a maintenance space.

[0011] The traveling mechanism, installed at the bottom of the support frame, is used to drive the self-propelled beam maintenance formwork to move longitudinally along the beam.

[0012] Furthermore, the support frame includes:

[0013] Multiple anti-tipping gantry frames are arranged at intervals along the longitudinal direction of the beam, with each anti-tipping gantry frame spanning across the top of the beam;

[0014] The bridge deck crossbeams are fixedly connected to the bottom sides of each of the anti-overturning gantry frames, and extend laterally outward along the beam body to the outer side of the flange plate of the beam body;

[0015] The bridge deck longitudinal beam extends longitudinally along the beam body and is fixedly connected to the adjacent bridge deck transverse beam;

[0016] Water tanks are fixedly installed on at least some of the bridge deck crossbeams and / or bridge deck longitudinal beams, and the water tanks are used to provide maintenance media.

[0017] Furthermore, the hanging beam includes a bottom crossbeam, which extends laterally along the beam body and is fixedly connected to the bottom end of the hanging beam. The bottom crossbeam is used to support the maintenance mechanism located at the bottom of the beam body.

[0018] Furthermore, the maintenance mechanism includes a maintenance layer frame laid on the inner side of the hanging beam and the upper surface of the bottom crossbeam, and a flexible maintenance layer laid on the maintenance layer frame.

[0019] Furthermore, the flexible curing layer is also provided with a number of curing nozzles, which are connected to the water tank through pipelines and are used to release curing media into the curing space enclosed by the flexible curing layer.

[0020] Furthermore, the walking mechanism includes:

[0021] Wheel box rails are used to be laid longitudinally on the flange plates of the beam;

[0022] The longitudinal transfer roller box includes an active longitudinal transfer roller box and a driven longitudinal transfer roller box. The longitudinal transfer roller box is installed at the bottom of the support frame and rolls in cooperation with the roller box track.

[0023] Furthermore, it also includes a beam end sealing frame, which is detachably installed on the end face of the hanging beam at both longitudinal ends of the self-propelled beam curing formwork. The edge contour of the beam end sealing frame matches the end face contour of the beam to seal the longitudinal end gap of the curing space.

[0024] Furthermore, longitudinal stabilizing bars are detachably provided between the adjacent hanging beams along the longitudinal direction of the beam body.

[0025] The present invention also provides a method for using a self-propelled beam curing formwork based on any one of the above-mentioned methods, characterized by comprising the following steps:

[0026] S1: Lay wheel box rails on the flange plates of the beam and install the self-propelled beam maintenance formwork on the wheel box rails;

[0027] S2: Drive the hanging beam to switch to the closed state through the mold opening and closing mechanism, so that the flexible curing layer of the curing mechanism covers the side and bottom of the beam, and install the beam end sealing frame at both ends of the self-propelled beam curing mold to form a fully enclosed curing space.

[0028] S3: Activate the curing nozzle to release the curing medium into the enclosed curing space to moisturize and heat-preserve the beam.

[0029] S4: After the maintenance work is completed, the hanging beam is switched to the unfolded state by the formwork opening and closing mechanism so that the self-propelled beam maintenance formwork is detached from the beam.

[0030] S5: Start the walking mechanism and drive the self-propelled beam maintenance formwork to move longitudinally along the wheel box track to the preset working position of the next beam;

[0031] S6: Repeat steps S2 to S5 to complete the maintenance work for each beam in sequence.

[0032] Furthermore, when the beam length changes and the self-propelled beam maintenance formwork completes the hole shift, at least one set of the hanging beam longitudinal stabilizing bars located at the longitudinal end of the self-propelled beam maintenance formwork are released so that the hanging beam at the corresponding position remains in the unfolded state; the remaining part of the hanging beam and its corresponding bottom crossbeam that have not released the hanging beam longitudinal stabilizing bars are switched to the closed state to perform maintenance work, and the beam end closing frame that matches the current beam end profile is reinstalled at the longitudinal end face position of the self-propelled beam maintenance formwork.

[0033] The beneficial effects of this invention are as follows: The self-propelled beam curing formwork and its method of use constitute a fully enclosed curing space through hanging beams, bottom crossbeams, and a flexible curing layer, achieving 360° coverage of the beam without dead angles and maintaining a humidity retention rate of over 98%. This effectively solves the problem of insufficient concrete hydration caused by excessively rapid water evaporation in traditional water-spraying curing. Simultaneously, the use of a walking mechanism in conjunction with wheel box rails allows the formwork to move autonomously along the beam surface without the need for suspended platforms or climbing equipment, significantly reducing the risks of high-altitude operations and labor input. The flexible curing layer, in a fully enclosed state, can block the influence of ambient wind on the beam surface, preventing rapid temperature changes and reducing the generation of temperature stress cracks. The enclosed frame at the beam ends further enhances the sealing of the curing space, preventing the loss of curing media. By removing the longitudinal stabilizing rods at the end hanging beams, it can flexibly adapt to alternating construction of beams of different lengths, exhibiting strong versatility. Long-term heat preservation and moisture retention curing can accelerate the development of concrete strength, ensure curing quality, extend the service life of bridges, and reduce the total life-cycle maintenance cost. Attached Figure Description

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0035] Figure 1 This is a cross-sectional schematic diagram of the invention in its unfolded state;

[0036] Figure 2 This is a cross-sectional schematic diagram of the present invention in its closed state;

[0037] Figure 3 This is a schematic diagram of the end face structure of the present invention;

[0038] Figure 4 This is a schematic diagram of the structure of the present invention.

[0039] Explanation of reference numerals in the attached drawings: 1. Beam body; 2. Anti-overturning gantry; 3. Bridge deck crossbeam; 4. Bridge deck longitudinal beam; 5. Formwork opening and closing mechanism; 6. Hanging beam; 7. Bottom crossbeam; 8. Wheel box track; 9. Longitudinal movement roller box; 91. Active longitudinal movement roller box; 92. Driven longitudinal movement roller box; 10. Water tank; 11. Curing nozzle; 12. Flexible curing layer; 13. Beam end enclosed frame; 14. Hanging beam longitudinal stabilizer bar. Detailed Implementation

[0040] It should be noted that in the description of this specification, the terms "upper", "lower", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0041] As shown in the figure: the self-propelled beam curing formwork of this embodiment includes:

[0042] The support frame is configured to extend longitudinally along beam 1 and span across it. As the main load-bearing structure of the entire curing formwork, this support frame is constructed of high-strength steel, welded or bolted together. It possesses sufficient rigidity and stability to withstand the self-weight of accessories such as the hanging beam 6, flexible curing layer 12, water tank 10, and curing nozzles 11, and resists wind loads during construction and dynamic loads during movement. The support frame spans across beam 1, and its bottom is connected to the walking mechanism, thus achieving comprehensive coverage of the top, sides, and bottom of beam 1.

[0043] Multiple pairs of hanging beams 6 are hinged in pairs to the lateral sides of the support frame and configured to rotate relative to the support frame in the vertical plane. Specifically, the upper end of the hanging beam 6 is hinged to the cantilevered end of the bridge deck beam 3 of the support frame via a pin, and a self-lubricating bushing is provided at the pin to ensure flexible rotation and wear resistance. The hanging beam 6 can be a truss structure welded from rectangular steel tubes or I-beams, reducing its weight while ensuring sufficient strength. Since the hanging beam 6 can rotate in the vertical plane around the hinge point, it can achieve both closed and unfolded working states, thereby meeting the wrapping requirements during maintenance and the avoidance requirements when passing through holes.

[0044] A mold frame opening and closing mechanism 5 is connected between the support frame and the hanging beam 6, used to drive the hanging beam 6 to switch between a closed state close to the beam 1 and an extended state away from the beam 1. In this embodiment, the mold frame opening and closing mechanism 5 adopts a double-acting hydraulic cylinder. The cylinder body end of the hydraulic cylinder is hinged to the bridge deck crossbeam 3 of the support frame, and the piston rod end is hinged to the upper middle part of the hanging beam 6. Through the control of the hydraulic system, the hanging beam 6 can be driven to rotate precisely and smoothly. When the hydraulic cylinder extends, the hanging beam 6 unfolds downward and outward, causing the mold frame to detach from the beam 1; when the hydraulic cylinder retracts, the hanging beam 6 closes upward and inward, causing the flexible curing layer 12 to adhere tightly to the surface of the beam 1. The stroke and thrust of the hydraulic cylinder are calculated and determined according to the weight of the hanging beam 6 and the required mold closing force, and are equipped with a hydraulic lock to prevent the hanging beam 6 from falling due to accidental pressure release.

[0045] A maintenance mechanism, located inside the hanging beam 6, is used to cover the sides and bottom of the beam 1 in the closed state to form a maintenance space. In this embodiment, the maintenance mechanism includes a maintenance layer frame laid on the inside of the hanging beam 6 and the upper surface of the bottom crossbeam 7, and a flexible maintenance layer 12 laid on the maintenance layer frame. The flexible maintenance layer 12 can be made of high-strength, aging-resistant, waterproof and breathable composite geomembrane or PVC coated fabric. Its inner side has good moisture retention performance, and its outer side has tensile strength, enabling it to tightly adhere to the surface of the beam 1 under water pressure and its own weight. The maintenance layer frame is a dense wire mesh structure, fixed to the inside of the hanging beam 6 and the bottom crossbeam 7 by angle steel or U-bolts, and its shape matches the contour of the sides and bottom of the beam 1. The dense wire mesh structure can provide uniform support for the flexible curing layer 12, preventing the curing layer from bulging or tearing under the action of spray water pressure or wind, and will not prevent water mist from passing through the mesh to reach the surface of the beam 1.

[0046] A traveling mechanism, installed at the bottom of the support frame, drives the entire formwork to move longitudinally along beam 1. The traveling mechanism includes a drive motor, a reducer, rollers, and a track system. The drive motor is a variable frequency speed-regulating motor, which can adjust the traveling speed as needed, typically controlled between 1 and 3 m / min, to ensure smooth and safe passage through the holes. The traveling mechanism is also equipped with an electromagnetic brake, which automatically locks when stopped to prevent the formwork from slipping on the ramp.

[0047] The supporting frame includes multiple anti-overturning gantry frames 2, arranged longitudinally along the beam 1 at intervals, with each anti-overturning gantry frame 2 spanning across the beam 1. The anti-overturning gantry frame 2 is inverted U-shaped or portal-shaped, constructed from large-section square steel pipes or I-beams through bending or welding. Its inner clearance dimension is larger than the width of the beam 1 to ensure no interference with the beam 1 during movement. The bottom of the two side columns of the anti-overturning gantry frame 2 is fixedly connected to the bridge deck crossbeam 3 by high-strength bolts. An inspection walkway and guardrails can be installed on the top crossbeam for convenient daily inspection and maintenance. The number of anti-overturning gantry frames 2 is usually three or more, determined specifically by the length of the beam 1, generally one every 8-10 meters.

[0048] The bridge deck crossbeams 3 are fixedly connected to the bottom sides of each of the aforementioned anti-overturning gantry frames 2, and extend laterally along the beam body 1 to the outer side of the flange plate of the beam body 1. The bridge deck crossbeams 3 are made of I-beams or H-beams, and their length is greater than the width of the flange plate of the beam body 1, typically extending 0.5 to 1.0 meters beyond the edge of the beam to provide space for the hinged installation of the hanging beams 6. The bridge deck crossbeams 3 are connected to the anti-overturning gantry frames 2 columns using high-strength bolts and shear keys to ensure joint rigidity and fatigue resistance.

[0049] The bridge deck longitudinal beam 4 extends longitudinally along the beam body 1 and connects to the adjacent bridge deck transverse beams 3. The bridge deck longitudinal beam 4 can be made of channel steel or I-beams and is connected to the sides or top surfaces of each bridge deck transverse beam 3 by bolts or welding to form a spatial truss or frame structure. The arrangement of the bridge deck longitudinal beam 4 not only improves the overall longitudinal stiffness of the supporting frame, but also plays a role in transferring longitudinal loads.

[0050] At least some of the bridge deck crossbeams 3 and / or the bridge deck longitudinal beams 4 are fixedly installed with water tanks 10, which are used to provide the maintenance medium. The water tanks 10 are made of stainless steel or polyethylene, and their volume is determined according to the water consumption for maintenance of a single span beam, generally 1 to 3 cubic meters. The bottom of the water tank 10 is equipped with an outlet and a filter, and is connected to the main water supply pipe of the maintenance spray head 11 via a flexible hose.

[0051] The hanging beam 6 includes a bottom crossbeam 7, which extends laterally along the beam body 1 and is fixedly connected to the bottom end of the hanging beam 6. The bottom crossbeam 7 supports the curing mechanism located at the bottom of the beam body 1. The bottom crossbeam 7 is welded or bolted to the lower end of the hanging beam 6 to form a single unit. The length of the bottom crossbeam 7 matches the bottom width of the beam body 1, and is typically 10-20 cm wider than the bottom width of the beam to ensure that the flexible curing layer 12 can completely cover the corner of the bottom of the beam. When the hanging beam 6 is closed, the bottom crossbeams 7 on the left and right sides are joined near the center line of the bottom of the beam or have a small gap, thereby achieving a closed wrapping of the bottom surface of the beam body 1.

[0052] The flexible curing layer 12 is also equipped with several curing nozzles 11, which are connected to the water tank 10 via pipelines. These nozzles release the curing medium into the curing space enclosed by the flexible curing layer 12. The curing nozzles 11 are adjustable-angle atomizing nozzles with a working pressure of 0.2~0.4MPa, capable of forming a uniform fine water mist. The pipelines are equipped with solenoid valves and pressure gauges, allowing for zoned and timed control of the nozzle operation according to curing needs.

[0053] In this embodiment, a beam end sealing frame 13 is also included. The beam end sealing frame 13 is detachably installed on the end faces of the hanging beams 6 at both longitudinal ends of the self-propelled beam curing formwork. The edge contour of the beam end sealing frame 13 matches the end face contour of the beam 1 to seal the longitudinal end gap of the curing space. In the closed state, if the ends of the beam 1 are not sealed, the curing medium will leak from both ends. By installing the beam end sealing frame 13, both ends of the curing space can be sealed, forming a fully enclosed microenvironment curing chamber together with the flexible curing layer 12.

[0054] In this embodiment, longitudinal stabilizing bars 14 are detachably installed between adjacent hanging beams 6 along the longitudinal direction of beam 1. The longitudinal stabilizing bars 14 are made of round steel pipe or angle steel, and their ends are connected to the middle or lower part of adjacent hanging beams 6 via pins or lugs. After the longitudinal stabilizing bars 14 are installed, multiple hanging beams 6 are connected longitudinally as a whole, which can jointly resist longitudinal inertial forces and wind loads during movement, improving the longitudinal stiffness and vibration resistance of the formwork.

[0055] The present invention also provides a method for using the self-propelled beam curing formwork described in any of the above claims, comprising the following steps:

[0056] S1: Lay wheel box rails 8 on the flange plate of beam 1, and install the self-propelled beam maintenance formwork on the wheel box rails 8.

[0057] S2: Drive the hanging beam 6 to switch to the closed state through the mold opening and closing mechanism 5, so that the flexible curing layer 12 of the curing mechanism covers the side and bottom of the beam 1, and install the beam end sealing frame 13 at both longitudinal ends of the self-propelled beam curing mold to form a fully enclosed curing space.

[0058] S3: Activate the maintenance nozzle 11 to release the maintenance medium into the enclosed maintenance space to moisturize and heat-preserve the beam 1.

[0059] S4: After the maintenance work is completed, the hanging beam 6 is switched to the unfolded state by the formwork opening and closing mechanism 5, so that the self-propelled beam maintenance formwork is detached from the beam 1.

[0060] S5: Start the walking mechanism and drive the self-propelled beam maintenance formwork to move longitudinally along the wheel box track 8 to the preset working position of the next beam.

[0061] S6: Repeat steps S2 to S5 to complete the maintenance work for each beam in sequence.

[0062] In this embodiment, when the length of beam 1 changes and the self-propelled beam maintenance formwork completes the through-hole relocation, at least one set of longitudinal stabilizing rods 14 at the longitudinal end of the self-propelled beam maintenance formwork is released, so that the corresponding hanging beams 6 remain in the unfolded state. The remaining hanging beams 6 and their corresponding bottom crossbeams 7, for which the longitudinal stabilizing rods 14 have not been released, are switched to the closed state to perform maintenance work. A beam end sealing frame 13 matching the current beam 1 end face contour is reinstalled at the longitudinal end face position of the self-propelled beam maintenance formwork. For example, when changing from a 32-meter standard beam segment to a 24-meter non-standard beam segment, due to the shortened beam length, the longitudinal stabilizing rods 14 corresponding to the outermost set of hanging beams 6 can be removed, and this set of hanging beams 6 can remain in the normally open state. Only the remaining sets of hanging beams 6 are closed normally for maintenance. Simultaneously, a beam end sealing frame 13 matching the 24-meter beam end face contour is replaced to ensure the airtightness of the new maintenance space.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A self-propelled beam curing formwork, characterized in that: include: A support frame is configured to extend longitudinally along the beam and span across the beam; Multiple pairs of hanging beams are hinged in pairs to the lateral sides of the support frame and are configured to rotate relative to the support frame in the vertical plane. A formwork opening and closing mechanism is connected between the support frame and the hanging beam, and is used to drive the hanging beam to switch between a closed state close to the beam and an unfolded state away from the beam. A maintenance mechanism is installed on the inner side of the hanging beam to cover the sides and bottom of the beam in the closed state, so as to form a maintenance space. The traveling mechanism, installed at the bottom of the support frame, is used to drive the self-propelled beam maintenance formwork to move longitudinally along the beam.

2. The self-propelled beam curing formwork according to claim 1, characterized in that: The supporting framework includes: Multiple anti-tipping gantry frames are arranged at intervals along the longitudinal direction of the beam, with each anti-tipping gantry frame spanning across the top of the beam; The bridge deck crossbeams are fixedly connected to the bottom sides of each of the anti-overturning gantry frames, and extend laterally outward along the beam body to the outer side of the flange plate of the beam body; The bridge deck longitudinal beam extends longitudinally along the beam body and is fixedly connected to the adjacent bridge deck transverse beam; Water tanks are fixedly installed on at least some of the bridge deck crossbeams and / or bridge deck longitudinal beams, and the water tanks are used to provide maintenance media.

3. The self-propelled beam curing formwork according to claim 2, characterized in that: The hanging beam includes a bottom crossbeam, which extends laterally along the beam body and is fixedly connected to the bottom end of the hanging beam. The bottom crossbeam is used to support the maintenance mechanism located at the bottom of the beam body.

4. The self-propelled beam curing formwork according to claim 3, characterized in that: The maintenance mechanism includes a maintenance layer frame laid on the inner side of the hanging beam and the upper surface of the bottom crossbeam, and a flexible maintenance layer laid on the maintenance layer frame.

5. The self-propelled beam curing formwork according to claim 4, characterized in that: The flexible curing layer is also provided with a number of curing nozzles, which are connected to the water tank through pipelines and are used to release curing medium into the curing space enclosed by the flexible curing layer.

6. The self-propelled beam curing formwork according to claim 1, characterized in that: The walking mechanism includes: Wheel box rails are used to be laid longitudinally on the flange plates of the beam; The longitudinal transfer roller box includes an active longitudinal transfer roller box and a driven longitudinal transfer roller box. The longitudinal transfer roller box is installed at the bottom of the support frame and rolls in cooperation with the roller box track.

7. The self-propelled beam curing formwork according to claim 1, characterized in that: It also includes a beam end sealing frame, which is detachably installed on the end face of the hanging beam at both longitudinal ends of the self-propelled beam curing formwork. The edge contour of the beam end sealing frame matches the end face contour of the beam to seal the longitudinal end gap of the curing space.

8. The self-propelled beam curing formwork according to claim 1, characterized in that: A longitudinal stabilizing bar is detachably installed between adjacent hanging beams along the longitudinal direction of the beam body.

9. A method of using a self-propelled beam curing formwork according to any one of claims 1 to 8, characterized in that, Includes the following steps: S1: Lay wheel box rails on the flange plates of the beam and install the self-propelled beam maintenance formwork on the wheel box rails; S2: Drive the hanging beam to switch to the closed state through the mold opening and closing mechanism, so that the flexible curing layer of the curing mechanism covers the side and bottom of the beam, and install the beam end sealing frame at both ends of the self-propelled beam curing mold to form a fully enclosed curing space. S3: Activate the curing nozzle to release the curing medium into the enclosed curing space to moisturize and heat-preserve the beam. S4: After the maintenance work is completed, the hanging beam is switched to the unfolded state by the formwork opening and closing mechanism so that the self-propelled beam maintenance formwork is detached from the beam. S5: Start the walking mechanism and drive the self-propelled beam maintenance formwork to move longitudinally along the wheel box track to the preset working position of the next beam; S6: Repeat steps S2 to S5 to complete the maintenance work for each beam in sequence.

10. The method of using the self-propelled beam curing formwork according to claim 9, characterized in that: When the beam length changes and the self-propelled beam maintenance formwork completes the hole shift, at least one set of the hanging beam longitudinal stabilizing bars located at the longitudinal end of the self-propelled beam maintenance formwork are released so that the hanging beam at the corresponding position remains in the unfolded state; the remaining hanging beams and their corresponding bottom crossbeams that have not had their hanging beam longitudinal stabilizing bars released are switched to the closed state to perform maintenance work, and the beam end closing frame that matches the current beam end profile is reinstalled at the longitudinal end face position of the self-propelled beam maintenance formwork.

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