Multifunctional steel pedal platform device for maintenance and reinforcement construction of T-shaped beam

Abstract

The invention belongs to the technical field of construction equipment, and discloses a multifunctional steel pedal platform device for T-beam maintenance and reinforcement construction, which comprises a maintenance truss assembly, two groups of steel pedal main platform assemblies are arranged below the maintenance truss assembly, and transposition arm assemblies are arranged on the two sides of the two groups of steel pedal main platform assemblies; through swing adjustment of the transposition arm assembly, a longitudinal double-station maintenance platform structure or a transverse expansion type maintenance platform structure is formed between the two sets of steel pedal main platform assemblies. At the moment, the two sets of steel pedal main platform assemblies form a transversely-flattened steel pedal maintenance platform structure between the two sets of transposition arm assemblies, maintenance work in the transverse direction is achieved, and when the transposition main arm swings longitudinally, the two sets of steel pedal main platform assemblies form a longitudinally-arranged double-station steel pedal maintenance platform structure between the two sets of transposition arm assemblies. In this way, double-station maintenance work in the longitudinal direction can be achieved.

Description

Technical Field

[0001] This invention belongs to the field of construction equipment technology, specifically relating to a multi-functional steel tread platform device for T-beam repair and reinforcement construction. Background Technology

[0002] T-beams, as common load-bearing components in bridge structures, are prone to defects such as cracks, concrete spalling, and steel reinforcement corrosion during long-term use, requiring regular maintenance and reinforcement. Currently, T-beam maintenance and construction primarily employ methods such as scaffolding, suspended baskets, or fixed work platforms. These traditional construction methods have the following prominent problems:

[0003] Limited working space and poor flexibility: Traditional platforms are mostly fixed structures and cannot be adjusted longitudinally or laterally according to the actual maintenance needs of T-beams, resulting in low construction efficiency, especially when multiple workstations are working simultaneously.

[0004] Platform adjustments are difficult and the adaptability is weak: existing platforms often cannot quickly change the operation mode. For example, if the operation mode is changed from vertical dual-station operation to horizontal large-area operation, the equipment needs to be rebuilt or replaced, which results in a long construction period and high cost.

[0005] Therefore, there is an urgent need for a multifunctional, adjustable, highly mechanized, safe and reliable T-beam maintenance and construction platform device to meet the pressing needs of modern bridge maintenance projects for efficient, safe and flexible construction. Summary of the Invention

[0006] To address the problems mentioned in the background section, this invention provides a multifunctional steel platform device for T-beam repair and reinforcement, featuring convenient platform adjustment.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a multifunctional steel tread platform device for T-beam repair and reinforcement construction, comprising a repair truss assembly, two sets of steel tread main platform assemblies are arranged below the repair truss assembly, and a shifting arm assembly is arranged on both sides of the two sets of steel tread main platform assemblies. By swinging and adjusting the shifting arm assembly, the two sets of steel tread main platform assemblies form a longitudinal double-station repair platform structure or a laterally expandable repair platform structure. Steel tread auxiliary platform assemblies are arranged at both ends of the steel tread main platform assembly. By synchronously extending the two sets of steel tread auxiliary platform assemblies at both ends of the steel tread main platform assembly, an adjustable repair work space structure is formed between the steel tread main platform assembly and the two sets of steel tread auxiliary platform assemblies.

[0008] In a preferred embodiment of a multifunctional steel tread platform device for T-beam repair and reinforcement construction, the repair truss assembly includes a truss arm, a first drive motor is fixedly installed at the bottom of one end of the truss arm, a truss support shaft is fixedly installed at the top of the truss arm, the top of the truss support shaft is rotatably mounted on the hanger arm via a bearing, a hanger arm mounting seat is fixedly installed at the top of the hanger arm, and a second drive motor is fixedly installed inside the hanger arm.

[0009] In a preferred embodiment of a multifunctional steel tread platform device for T-beam repair and reinforcement construction, the main steel tread platform assembly includes a main steel tread platform. A U-shaped main platform frame is fixedly installed at the bottom of the main steel tread platform. A third drive motor is fixedly installed at the bottom of the U-shaped main platform frame. A drive gear is installed on the output shaft of the third drive motor. Traveling side arms and sliding guide rails are fixedly installed on both sides of the main steel tread platform. U-shaped main platform side arms are also installed at both ends of the main steel tread platform. The sliding guide rails and traveling side arms are located inside the U-shaped main platform side arms.

[0010] In a preferred embodiment of a multifunctional steel tread platform device for T-beam repair and reinforcement construction, the steel tread auxiliary platform assembly includes a steel tread auxiliary platform, an auxiliary platform base is fixedly installed at the bottom of the steel tread auxiliary platform, a drive gear arm is fixedly installed on the auxiliary platform base, auxiliary platform side plates and L-shaped side arms are fixedly installed on both sides of the steel tread auxiliary platform, multiple moving wheels are installed at the bottom of the L-shaped side arms, and an auxiliary platform sliding arm is fixedly installed on the auxiliary platform side plate.

[0011] In a preferred embodiment of a multifunctional steel tread platform device for T-beam repair and reinforcement construction, the shifting arm assembly includes a shifting main arm, a first auxiliary shifting arm, and a second auxiliary shifting arm. A main arm end axle is fixedly installed in the middle of the shifting main arm, and a main arm drive shaft is fixedly installed on the main arm end axle. The second auxiliary shifting arm and the first auxiliary shifting arm are arranged on both sides of the shifting main arm.

[0012] In a preferred embodiment of a multifunctional steel tread platform device for T-beam repair and reinforcement construction, the auxiliary steel tread platform slides inside the main steel tread platform, the moving wheels travel on the walking side arm platform, and the auxiliary platform sliding arm slides within the sliding guide rail seat.

[0013] In a preferred embodiment of a multifunctional steel tread platform device for T-beam repair and reinforcement construction, two drive gear arms on the two sets of steel tread auxiliary platforms slide inside the U-shaped main platform. At this time, the two drive gear arms are set on both sides of the drive gear, and the two drive gear arms mesh with both sides of the drive gear respectively. Through the meshing of the drive gear with the two drive gear arms, the synchronous movement of the two steel tread auxiliary platforms in the steel tread main platform is realized.

[0014] In a preferred embodiment of a multifunctional steel tread platform device for T-beam repair and reinforcement construction, the shifting arm assembly is installed on the outer platform of two sets of steel tread main platform assemblies. At this time, the top and bottom of the second auxiliary shifting arm are rotatably connected to the U-shaped main platform side arms on the outer platform of the two sets of steel tread main platform assemblies, the top and bottom of the first auxiliary shifting arm are rotatably connected to the U-shaped main platform side arms on the outer platform of the two sets of steel tread main platform assemblies, and the top and bottom of the shifting main arm are rotatably connected to the U-shaped main platform side arms on the outer platform of the two sets of steel tread main platform assemblies. The shifting main arm, the first auxiliary shifting arm, and the second auxiliary shifting arm are arranged in a parallel and high-low structure on the outer platform of the two sets of steel tread main platform assemblies.

[0015] In a preferred embodiment of a multifunctional steel tread platform device for T-beam repair and reinforcement construction, the shifting main boom is rotatably mounted on the bottom frame of the truss arm via a main boom drive shaft and bearings, and the output shaft of the first drive motor is connected to the main boom drive shaft.

[0016] In a preferred embodiment of a multi-functional steel treadmill platform device for T-beam repair and reinforcement construction, the top of the truss arm is fixed to an existing mobile crane by fastening bolts and a boom mounting seat.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The present invention drives the shifting main arm to swing through the first drive motor and the main arm drive shaft. When the shifting main arm swings horizontally, the two sets of steel pedal main platform assemblies are equipped with a first auxiliary shifting arm and a second auxiliary shifting arm that are parallel to the shifting main arm. In this way, when the shifting main arm swings horizontally, the two sets of steel pedal main platform assemblies form a horizontally flat steel pedal maintenance platform structure between the two sets of shifting arm assemblies, realizing maintenance work in the horizontal direction.

[0019] 2. The present invention drives the shifting main arm to swing longitudinally through the first drive motor and the main arm drive shaft. When the shifting main arm swings longitudinally, the two sets of steel pedal main platform assemblies are equipped with a first auxiliary shifting arm and a second auxiliary shifting arm that are parallel to the shifting main arm. In this way, when the shifting main arm swings longitudinally, the two sets of steel pedal main platform assemblies form a longitudinally arranged dual-station steel pedal maintenance platform structure between the two sets of shifting arm assemblies. In this way, dual-station maintenance work in the longitudinal direction can be realized.

[0020] 3. The present invention provides steel pedal auxiliary platform components at both ends of the main steel pedal platform component. Through the synchronous extension of the two sets of steel pedal auxiliary platform components at both ends of the main steel pedal platform component, an adjustable maintenance work space is formed between the main steel pedal platform component and the two sets of steel pedal auxiliary platform components. By increasing the work space, it is convenient to carry out subsequent maintenance of the T-beam. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present invention;

[0022] Figure 2 This is an exploded view of the present invention;

[0023] Figure 3 This is a perspective view of the maintenance truss assembly of the present invention;

[0024] Figure 4 This is a perspective view of the steel pedal main platform assembly, the steel pedal auxiliary platform assembly, and the shifting arm assembly of the present invention;

[0025] Figure 5 This is a perspective view of the main steel pedal platform assembly and the auxiliary steel pedal platform assembly of the present invention;

[0026] Figure 6 This is a perspective view of the steel pedal main platform assembly of the present invention;

[0027] Figure 7 This is a perspective view of the steel pedal auxiliary platform assembly of the present invention;

[0028] Figure 8 This is a perspective view of the transposition arm assembly of the present invention.

[0029] In the diagram: 100, Maintenance truss assembly; 101, Truss arm; 102, First drive motor; 103, Truss support shaft; 104, Hanger arm; 105, Second drive motor; 106, Hanger arm mounting base; 200, Steel tread main platform assembly; 201, Steel tread main platform; 202, Traveling side arm platform; 203, Drive gear; 204, Third drive motor; 205, U-shaped main platform frame; 206, U-shaped main platform side arm; 207. 300. Sliding guide rail base; 301. Steel pedal auxiliary platform assembly; 302. Steel pedal auxiliary platform; 303. Auxiliary platform base; 304. Drive gear arm; 305. Moving wheel; 306. L-shaped side arm; 307. Auxiliary platform sliding arm; 401. Auxiliary platform side plate; 402. Shifting arm assembly; 403. Shifting main arm; 404. Main arm end shaft plate; 405. Main arm drive shaft; 406. First auxiliary shifting arm; 407. Second auxiliary shifting arm. Detailed Implementation

[0030] 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.

[0031] Please see Figures 1-8 As shown, this invention provides a multifunctional steel tread platform device for T-beam repair and reinforcement construction, including a repair truss assembly 100. Two sets of steel tread main platform assemblies 200 are arranged below the repair truss assembly 100. A shifting arm assembly 400 is arranged on both sides of each of the two sets of steel tread main platform assemblies 200. Through the swing adjustment of the shifting arm assembly 400, a longitudinal double-station repair platform structure or a laterally expandable repair platform structure is formed between the two sets of steel tread main platform assemblies 200. Steel tread auxiliary platform assemblies 300 are arranged at both ends of each steel tread main platform assembly 200. Through the synchronous extension of the two sets of steel tread auxiliary platform assemblies 300 at both ends of the steel tread main platform assembly 200, an adjustable repair work space is formed between the steel tread main platform assembly 200 and the two sets of steel tread auxiliary platform assemblies 300.

[0032] In a preferred embodiment, please refer to Figure 3 The maintenance truss assembly 100 includes a truss arm 101. A first drive motor 102 is fixedly installed at the bottom of one end of the truss arm 101. A truss support shaft 103 is fixedly installed at the top of the truss arm 101. The top of the truss support shaft 103 is rotatably mounted on a hanger arm 104 via a bearing. A hanger arm mounting seat 106 is fixedly installed at the top of the hanger arm 104. A second drive motor 105 is fixedly installed inside the hanger arm 104.

[0033] In this embodiment, the top of the truss arm 101 is secured to an existing mobile crane by fastening bolts and a boom mounting base 106.

[0034] In this embodiment, the output shaft of the first drive motor 102 is connected to the main arm drive shaft 403.

[0035] In a preferred embodiment, please refer to Figure 6 The steel pedal main platform assembly 200 includes a steel pedal main platform 201. A U-shaped main platform frame 205 is fixedly installed at the bottom of the steel pedal main platform 201. A third drive motor 204 is fixedly installed at the bottom of the U-shaped main platform frame 205. A drive gear 203 is installed on the output shaft of the third drive motor 204. A walking side arm platform 202 and a sliding guide rail seat 207 are fixedly installed on both sides of the steel pedal main platform 201. U-shaped main platform side arms 206 are also installed at both ends of the steel pedal main platform 201. The sliding guide rail seat 207 and the walking side arm platform 202 are located inside the U-shaped main platform side arms 206.

[0036] In a preferred embodiment, please refer to Figure 7 The steel pedal auxiliary platform assembly 300 includes a steel pedal auxiliary platform 301. An auxiliary platform base 302 is fixedly installed at the bottom of the steel pedal auxiliary platform 301. A drive gear arm 303 is fixedly installed on the auxiliary platform base 302. Auxiliary platform side plates 307 and L-shaped side arms 305 are fixedly installed on both sides of the steel pedal auxiliary platform 301. Multiple moving wheels 304 are installed at the bottom of the L-shaped side arms 305. An auxiliary platform sliding arm 306 is fixedly installed on the auxiliary platform side plate 307.

[0037] In this embodiment, the steel pedal auxiliary platform 301 slides inside the steel pedal main platform 201.

[0038] In this embodiment, the movable wheel 304 moves on the walking side arm platform 202.

[0039] In this embodiment, the auxiliary platform sliding arm 306 slides within the sliding guide rail seat 207.

[0040] In this embodiment, the two drive gear arms 303 on the two sets of steel pedal auxiliary platforms 301 slide inside the U-shaped main frame 205, and at this time the two drive gear arms 303 are arranged on both sides of the drive gear 203.

[0041] In this embodiment, the two drive gear arms 303 mesh with the two sides of the drive gear 203 respectively.

[0042] In this embodiment, the synchronous movement of the two steel pedal auxiliary platforms 301 within the steel pedal main platform 201 is achieved by the meshing of the drive gear 203 with the two drive gear arms 303.

[0043] In a preferred embodiment, please refer to Figure 8 The transposition arm assembly 400 includes a transposition main arm 401, a first auxiliary transposition arm 404, and a second auxiliary transposition arm 405. A main arm end bearing plate 402 is fixedly disposed in the middle of the transposition main arm 401, and a main arm drive shaft 403 is fixedly disposed on the main arm end bearing plate 402. The second auxiliary transposition arm 405 and the first auxiliary transposition arm 404 are disposed on both sides of the transposition main arm 401.

[0044] In this embodiment, the shift arm assembly 400 is disposed on the outer platform of the two sets of steel pedal main platform assemblies 200.

[0045] In this embodiment, the top and bottom of the second auxiliary shifting arm 405 are rotatably connected to the U-shaped main platform side arms 206 on the outer platform of the two sets of steel pedal main platform assemblies 200, respectively.

[0046] In this embodiment, the top and bottom of the first auxiliary shifting arm 404 are rotatably connected to the U-shaped main platform side arms 206 on the outer platform of the two sets of steel pedal main platform assemblies 200, respectively.

[0047] In this embodiment, the top and bottom of the switching main arm 401 are rotatably connected to the U-shaped main platform side arms 206 on the outer platform of the two sets of steel pedal main platform assemblies 200.

[0048] In this embodiment, the main shifting arm 401, the first auxiliary shifting arm 404, and the second auxiliary shifting arm 405 are arranged in a parallel and high-low configuration on the outer platform of the two sets of steel pedal main platform assemblies 200.

[0049] In this embodiment, the shifting main boom 401 is rotatably mounted on the bottom frame of the truss boom 101 via the main boom drive shaft 403 and bearings.

[0050] The working principle of this invention is as follows: To solve the problem of needing simultaneous longitudinal or transverse construction during existing T-beam repair and reinforcement work, this invention provides two sets of steel treadle main platform assemblies 200 below the repair truss assembly 100. Each set of steel treadle main platform assemblies 200 has a shifting arm assembly 400 on both sides. Through the swing adjustment of the shifting arm assembly 400, the two sets of steel treadle main platform assemblies 200 form a longitudinal double-station repair platform structure or a transversely extended repair platform structure. Specifically, the shifting arm assembly 400 includes a shifting main arm 401 and a first auxiliary shifting arm 402. 4. The second auxiliary shifting arm 405 and the first auxiliary shifting arm 404 are arranged on both sides of the shifting main arm 401. The shifting arm assembly 400 is arranged on the outer platform of the two sets of steel pedal main platform assemblies 200. At this time, the top and bottom of the second auxiliary shifting arm 405 are rotatably connected to the U-shaped main platform side arms 206 on the outer platform of the two sets of steel pedal main platform assemblies 200, respectively. At this time, the top and bottom of the first auxiliary shifting arm 404 are respectively connected to the two... The U-shaped main platform side arm 206 on the outer platform of the steel pedal main platform assembly 200 is rotatably connected. At this time, the top and bottom of the shifting main arm 401 are rotatably connected to the U-shaped main platform side arms 206 on the outer platform of the two sets of steel pedal main platform assemblies 200, respectively. The shifting main arm 401, the first auxiliary shifting arm 404, and the second auxiliary shifting arm 405 are arranged in a parallel and high-low structure on the outer platform of the two sets of steel pedal main platform assemblies 200. The shifting main arm 401 is rotatably mounted on the bottom frame of the truss arm 101 through the main arm drive shaft 403 and bearings. The output shaft of the first drive motor 102 is connected to the main arm drive shaft 101. The drive shaft 403 is connected. In actual use, the first drive motor 102 and the main arm drive shaft 403 drive the shifting main arm 401 to swing. When the shifting main arm 401 swings horizontally, the two sets of steel pedal main platform assemblies 200 are equipped with a first auxiliary shifting arm 404 and a second auxiliary shifting arm 405 parallel to the shifting main arm 401. In this way, when the shifting main arm 401 swings horizontally, the two sets of steel pedal main platform assemblies 200 form a horizontally flat steel pedal maintenance platform structure between the two sets of shifting arm assemblies 400. In this way, maintenance work in the horizontal direction can be realized.

[0051] Based on the above, in order to realize the dual-station maintenance operation of the two sets of steel pedal main platform assemblies 200 in the longitudinal direction, the present invention drives the shifting main arm 401 to swing longitudinally through the first drive motor 102 and the main arm drive shaft 403. When the shifting main arm 401 swings longitudinally, since the two sets of steel pedal main platform assemblies 200 are provided with a first auxiliary shifting arm 404 and a second auxiliary shifting arm 405 parallel to the shifting main arm 401 on the outside, in this way, when the shifting main arm 401 swings longitudinally, the two sets of steel pedal main platform assemblies 200 form a longitudinally arranged dual-station steel pedal maintenance platform structure between the two sets of shifting arm assemblies 400. In this way, dual-station maintenance work in the longitudinal direction can be realized. In summary, through the above method, the usage state of the steel pedal maintenance platform can be adjusted and changed when in use. In actual use, it can be autonomously adjusted according to the specific maintenance situation.

[0052] Based on the above, in order to solve the problem of limited maintenance space when using the steel pedal maintenance platform, the present invention provides steel pedal auxiliary platform components 300 at both ends of the main steel pedal platform component 200. Through the synchronous extension of the two sets of steel pedal auxiliary platform components 300 at both ends of the main steel pedal platform component 200, an adjustable maintenance work space is formed between the main steel pedal platform component 200 and the two sets of steel pedal auxiliary platform components 300. Specifically, the steel pedal auxiliary platform 301 slides inside the main steel pedal platform 201, the moving wheel 304 travels on the walking side arm platform 202, the auxiliary platform sliding arm 306 slides within the sliding guide rail seat 207, and the two drive gear arms 303 on the two sets of steel pedal auxiliary platforms 301 slide inside the U-shaped main frame 205. At this time, the two drive gear arms 303 are located on both sides of the drive gear 203, and the two drive gear arms 303 mesh with the two sides of the drive gear 203 respectively. Through the interaction between the drive gear 203 and the two drive gears 303, the maintenance work space is adjusted. The meshing of the gear arms 303 enables the synchronous movement of the two steel pedal auxiliary platforms 301 within the steel pedal main platform 201. In actual use, the third drive motor 204 drives the drive gear 203 to rotate. When the drive gear 203 rotates, it meshes with the two drive gear arms 303 on both sides, causing the two drive gear arms 303 to simultaneously unfold or retract. At this time, the two sets of steel pedal auxiliary platform assemblies 300 simultaneously unfold or retract on both sides of the steel pedal main platform assembly 200. When unfolded, the steel pedal main platform assembly 200 and the two sets of steel pedal auxiliary platform assemblies 300 form an adjustable maintenance work space, facilitating subsequent maintenance of the T-beam. When retracted, it facilitates the storage and placement of the unused parts of the invention. Meanwhile, the invention ensures the smoothness of the steel pedal auxiliary platform assembly 300 when unfolding and moving at the end of the steel pedal main platform assembly 200 by moving the moving wheels 304 on the walking side arm platform 202.

[0053] 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 multi-functional steel treadle platform device for T-beam repair and reinforcement construction, comprising a repair truss assembly (100), characterized in that: Two sets of steel pedal main platform assemblies (200) are provided below the maintenance truss assembly (100). On both sides of the two sets of steel pedal main platform assemblies (200), a shifting arm assembly (400) is provided. By swinging and adjusting the shifting arm assembly (400), the two sets of steel pedal main platform assemblies (200) form a longitudinal double-station maintenance platform structure or a laterally expandable maintenance platform structure. At both ends of the steel pedal main platform assembly (200), steel pedal auxiliary platform assemblies (300) are provided. By synchronously extending the two sets of steel pedal auxiliary platform assemblies (300) at both ends of the steel pedal main platform assembly (200), an adjustable maintenance work space is formed between the steel pedal main platform assembly (200) and the two sets of steel pedal auxiliary platform assemblies (300).

2. The multifunctional steel treadle platform device for T-beam repair and reinforcement construction according to claim 1, characterized in that: The maintenance truss assembly (100) includes a truss arm (101), a first drive motor (102) is fixedly installed at the bottom of one end of the truss arm (101), a truss support shaft (103) is fixedly installed at the top of the truss arm (101), the top of the truss support shaft (103) is rotatably mounted on the hanger arm (104) through a bearing, a hanger arm mounting seat (106) is fixedly installed at the top of the hanger arm (104), and a second drive motor (105) is fixedly installed inside the hanger arm (104).

3. The multifunctional steel treadle platform device for T-beam repair and reinforcement construction according to claim 2, characterized in that: The steel pedal main platform assembly (200) includes a steel pedal main platform (201), a U-shaped main platform frame (205) is fixedly installed at the bottom of the steel pedal main platform (201), a third drive motor (204) is fixedly installed at the bottom of the U-shaped main platform frame (205), a drive gear (203) is installed on the output shaft of the third drive motor (204), a walking side arm platform (202) and a sliding guide rail seat (207) are fixedly installed on both sides of the steel pedal main platform (201), and a U-shaped main platform side arm (206) is also installed at both ends of the steel pedal main platform (201). The sliding guide rail seat (207) and the walking side arm platform (202) are installed inside the U-shaped main platform side arm (206).

4. The multi-functional steel treadle platform device for T-beam repair and reinforcement construction according to claim 3, characterized in that: The steel pedal auxiliary platform assembly (300) includes a steel pedal auxiliary platform (301), an auxiliary platform base (302) is fixedly installed at the bottom of the steel pedal auxiliary platform (301), a drive gear arm (303) is fixedly installed on the auxiliary platform base (302), auxiliary platform side plates (307) and L-shaped side arms (305) are fixedly installed on both sides of the steel pedal auxiliary platform (301), a plurality of moving wheels (304) are installed at the bottom of the L-shaped side arms (305), and an auxiliary platform sliding arm (306) is fixedly installed on the auxiliary platform side plate (307).

5. The multifunctional steel treadle platform device for T-beam repair and reinforcement construction according to claim 4, characterized in that: The transposition arm assembly (400) includes a transposition main arm (401), a first auxiliary transposition arm (404), and a second auxiliary transposition arm (405). A main arm end bearing plate (402) is fixedly disposed in the middle of the transposition main arm (401), and a main arm drive shaft (403) is fixedly disposed on the main arm end bearing plate (402). The second auxiliary transposition arm (405) and the first auxiliary transposition arm (404) are disposed on both sides of the transposition main arm (401).

6. The multifunctional steel tread platform device for T-beam repair and reinforcement construction according to claim 5, characterized in that: The steel pedal auxiliary platform (301) slides inside the steel pedal main platform (201), the moving wheel (304) travels on the walking side arm platform (202), and the auxiliary platform sliding arm (306) slides inside the sliding guide rail seat (207).

7. A multi-functional steel treadle platform device for T-beam repair and reinforcement construction according to claim 6, characterized in that: The two drive arms (303) on the two sets of steel pedal auxiliary platforms (301) slide inside the U-shaped main frame (205). At this time, the two drive arms (303) are set on both sides of the drive gear (203), and the two drive arms (303) mesh with both sides of the drive gear (203). Through the meshing of the drive gear (203) with the two drive arms (303), the two steel pedal auxiliary platforms (301) can achieve synchronous movement in the steel pedal main platform (201).

8. The multifunctional steel treadle platform device for T-beam repair and reinforcement construction according to claim 7, characterized in that: The shifting arm assembly (400) is disposed on the outer platform of the two sets of steel pedal main platform assemblies (200). At this time, the top and bottom of the second auxiliary shifting arm (405) are rotatably connected to the U-shaped main platform side arm (206) on the outer platform of the two sets of steel pedal main platform assemblies (200). At this time, the top and bottom of the first auxiliary shifting arm (404) are rotatably connected to the U-shaped main platform side arm (206) on the outer platform of the two sets of steel pedal main platform assemblies (200). At this time, the top and bottom of the shifting main arm (401) are rotatably connected to the U-shaped main platform side arm (206) on the outer platform of the two sets of steel pedal main platform assemblies (200). The shifting main arm (401), the first auxiliary shifting arm (404) and the second auxiliary shifting arm (405) are disposed on the outer platform of the two sets of steel pedal main platform assemblies (200) in a parallel structure and a high-low structure.

9. A multi-functional steel treadle platform device for T-beam repair and reinforcement construction according to claim 8, characterized in that: The shifting main boom (401) is rotatably mounted on the bottom frame of the truss arm (101) via the main boom drive shaft (403) and bearings, and the output shaft of the first drive motor (102) is connected to the main boom drive shaft (403).

10. A multifunctional steel treadle platform device for T-beam repair and reinforcement construction according to claim 9, characterized in that: The top of the truss arm (101) is secured to the existing mobile crane by fastening bolts and boom mounting base (106).

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