Steel box girder construction hoisting device

Abstract

The present application belongs to the technical field of hoisting equipment, and provides a steel box girder construction hoisting device, which comprises a lifting ring one and a lifting rope, the lifting rope is provided with multiple ropes, and the top of each rope is connected with the lifting ring one; the other end of the lifting rope is provided with an angle self-adaptive assembly, the bottom of the angle self-adaptive assembly is provided with a horizontal limiting assembly, and the gravity lifting clamping mechanism is arranged at the bottom of the steel box girder below the horizontal limiting assembly; the angle self-adaptive assembly comprises a bearing plate, four side edges in the top of the bearing plate are symmetrically provided with arc-shaped track frames, a sector gear plate and an arc-shaped swing plate are respectively arranged in the inner side groove corresponding to the arc-shaped track frames, the arc-shaped guide sliding plates one and two are arranged in a cross mode between the sector gear plate and the arc-shaped swing plate, and the groove of the arc-shaped guide sliding plate two is provided with a sliding block two in sliding fit. The present application has the following beneficial effects: the hoisting point angle is realized in real-time self-adaptive adjustment, the problems of shaking, tilting and eccentric loading in the hoisting process of the steel box girder are completely avoided, and the hoisting posture is stable.

Description

Technical Field

[0001] This invention relates to a steel box girder construction hoisting device, belonging to the technical field of hoisting equipment. Background Technology

[0002] Steel box girders, also known as steel plate box girders, are a common structural form for long-span bridges. They are generally used on bridges with large spans and are called steel box girders because their shape resembles a box. Steel box girders are generally composed of a top plate, bottom plate, web plate, transverse diaphragms, longitudinal diaphragms, and stiffening ribs, all connected by full welding.

[0003] When installing two adjacent steel box girders, the construction workers fix one of the steel box girders, then use a crane to lift the other steel box girder into the air. Then, they manually align the lifted steel box girder with the fixed steel box girder, and finally weld the connection between the two steel box girders. However, during the construction process, aligning the lifted steel box girder with the fixed steel box girder requires manual operation and the cooperation of surveyors. The alignment may not be accurate enough, the operation is cumbersome, and there are safety hazards.

[0004] To address the aforementioned issues, Chinese patent CN116986463B proposes a steel box girder hoisting device for hoisting and positioning two adjacent steel box girders during installation. The device includes two symmetrically arranged hoisting modules connected by a connecting component. Each hoisting module comprises a support component, an adjustment component, and a clamping component. The support component includes a support base and a hoisting frame, with the hoisting frame fixedly mounted on the upper end of the support base. The connecting component is positioned between the two hoisting frames. An adjustment component is located at the lower part of one end of the support base. Two clamping components are provided: one rotatably mounted at the lower end of the adjustment component, and the other fixedly mounted at the lower part of the other end of the support base. The clamping components clamp the end of the steel box girder. This prior art device, with its adjustment component and control component, enables precise alignment between the steel box girder to be installed and the already fixed steel box girder.

[0005] While the aforementioned patent enables docking during the hoisting and installation of steel box girders, it contains multiple precision components, such as adjustment components, clamping components, and control components, as well as some lead screws and worm gear drives. The large number of components and the complex linkage relationships increase the manufacturing difficulty and maintenance costs of the equipment. Furthermore, since steel box girders are generally heavy, weighing up to hundreds of tons, these linkage designs may loosen under heavy load conditions due to mechanical fatigue or material creep, affecting the overall structural rigidity and the safety of hoisting. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the purpose of this invention is to provide a steel box girder construction hoisting device.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0008] A steel box girder construction hoisting device includes a lifting ring and slings. Multiple slings are provided, each with its top connected to the lifting ring. Each sling has an angle-adaptive component at its other end, and a horizontal limiting component at its bottom. Below the horizontal limiting component, a gravity lifting clamping mechanism is located at the bottom of the steel box girder. The angle-adaptive component includes a bearing plate, which is fixedly connected to the horizontal limiting component. Four symmetrical arc-shaped track frames are provided at the center of the four sides of the top of the bearing plate. A sector-shaped gear plate and an arc-shaped swing plate are respectively installed in the inner grooves of each set of arc-shaped track frames. An arc-shaped guide plate 1 and an arc-shaped guide plate 2 are arranged in a cross configuration between the gear plate and the arc-shaped swing plate. A slider 2 with sliding engagement is provided in the groove of the arc-shaped guide plate 2. A connecting rod is provided at the bottom of the slider 2. A slider 1 with sliding engagement is provided at the bottom of the connecting rod. A limiting plate 1 is provided at the bottom of the slider 1. An adjusting plate is provided at the top of the slider 2. A lifting ring 2 is provided at the top center of the adjusting plate. The other end of the lifting cable is connected to the lifting ring 2. A threaded assembly is provided at the bottom of the sector gear plate. The threaded assembly is fixed to the top side of the bearing plate. The horizontal limiting assembly is mechanically linked with the gravity lifting clamping mechanism.

[0009] Furthermore, the threaded assembly includes a motor, the bottom of which is fixed to the top side of the support plate via a motor mounting bracket. The output end of the motor is connected to a worm gear that meshes with a sector gear plate. Supports are fitted on both sides of the worm gear, and the bottom of the supports is fixed to the top of the support plate.

[0010] Furthermore, the horizontal limiting component includes a buffer section and a lifting section. The lifting section is linked with the gravity lifting clamping mechanism, and the buffer section is linked with the angle adaptive component.

[0011] Furthermore, the lifting section includes a pyramid plate, a magnetic suction plate at the top of the pyramid plate, a support rod at the bottom of the pyramid plate, the support rod passing through the steel box girder, a pad at the bottom of the support rod, and a buffer spring sleeved on the support rod between the pad and the bottom of the steel box girder.

[0012] Furthermore, the buffer section includes several support plates. The bottom of the support plate is fixed to the top of the steel box girder. A fixing block is provided at the top of the support plate, and the fixing block is fixed to the bottom of the bearing plate. A sleeve is provided at the top of the inner side of the support plate. A top rod is transversely inserted in the sleeve. The outer side of the top rod passes through the support plate and has a T-shaped plate at its end. A displacement limiting plate is provided on the side of the T-shaped plate away from the top rod. An airbag is provided at the top of the inner side of the T-shaped plate. The airbags are connected by a connecting pipe. A guide rod is inserted at the bottom of the T-shaped plate. The inner side of the guide rod is fixed at the center of the lower part of the outer wall of the support plate. A second buffer spring is sleeved on the guide rod between the support plate and the T-shaped plate. A second limiting plate is provided at the inner end of the top rod. A sphere that matches the inclined side of the pyramid plate is provided on the side of the limiting plate away from the top rod. A third buffer spring is sleeved on the top rod.

[0013] Furthermore, the inner end of the buffer spring three is fixed to the side of the limiting plate two, and the outer end of the buffer spring three passes through the sleeve and the support plate and is fixed to the side of the T-shaped plate.

[0014] Furthermore, the gravity lifting clamping mechanism includes a U-shaped support base, the top right side of which is fixed to the bottom of the steel box girder, and the left side of which clamps the side of the steel box girder; the U-shaped support base groove is provided with a lifting part and an air storage and conveying part, and the air storage and conveying part is connected to the horizontal limiting component.

[0015] Furthermore, the lifting unit includes a gravity plate, which is fixed to the horizontal limiting assembly. A piston column is located at the bottom of the gravity plate, and side gear teeth are provided on the side of the piston column. A hollow column is fitted onto the piston column, and the bottom of the hollow column is fixed to the center of one side of the U-shaped support seat groove. A notch is provided on the upper part of the hollow column on the side of the side gear teeth, and a gear one meshing with the side gear teeth is located at the notch. A shaft is inserted through the middle of gear one, and both ends of the shaft are movably connected to the inner wall of the U-shaped support seat. A gear two is fitted on the other side of the shaft, and a meshing gear plate is provided below gear two. A piston push rod and a piston rod are respectively provided on both sides of the gear plate. Piston push rod 2, piston push rod 1, and piston push rod 2 are fitted with telescopically cooperating air storage tank 1 and air storage tank 2 on the side away from the gear plate. The bottom of air storage tank 1 and air storage tank 2 are provided with mounting bases, and the bottom of the mounting bases is provided with support column 1. The bottom of support column 1 is fixed in the groove of the U-shaped support seat. Support column 2 is fitted on the side of piston push rod 1 and piston push rod 2 near the gear plate. The bottom of support column 2 is fixed in the groove of the U-shaped support seat. Air storage tank 2 is connected to air storage tank 1 through an air supply pipe. The side of air storage tank 1 away from piston push rod 1 is connected to an air delivery pipe. The other end of the air delivery pipe is connected to the horizontal limiting component.

[0016] Furthermore, a support column three is sleeved on the shaft between gear one and gear two, and the bottom of the support column three is fixed in the groove of the U-shaped support seat; the shaft is driven by a battery, and the battery is installed on the outer wall of the U-shaped support seat.

[0017] The beneficial effects of this invention are:

[0018] It can achieve angle self-adaptation, eliminating hoisting eccentricity and sway; the angle self-adaptive component adopts a dual adjustment mode of arc-shaped track, double slider sliding and motor worm gear drive. During hoisting, the tension of the sling drives the slider to slide adaptively along the arc-shaped guide plate, passively offsetting the angle deviation caused by inertial force and wind load; together with the sensor and motor-driven sector gear plate for active leveling, it can realize real-time adaptive adjustment of the hoisting point angle, completely avoiding swaying, tilting and eccentricity during the hoisting of steel box girders, and ensuring the stability of the hoisting posture.

[0019] By linking horizontal limiting and buffering, the assembly accuracy is improved. The horizontal limiting component achieves synchronous clamping of airbags through the lifting of the pyramid plate, the guidance of the ball, and the transmission of the top rod. The buffer springs absorb the impact force of hoisting in three stages. After the airbags are inflated, they tightly wrap around the bearing plate, limiting the lateral and longitudinal displacement of the steel box girder. The steel box girder is kept in a horizontal state throughout the hoisting process, which greatly improves the alignment accuracy when assembling and connecting the steel box girder and reduces the difficulty of welding construction.

[0020] The gravity-driven automatic clamping mechanism requires no manual assistance, ensuring safety and high efficiency. Powered by the steel box girder's own weight, the gravity plate presses down, driving the piston column and gear set to compress the gas tank. The gas is then transported through pipelines to the air bladder for inflation and locking. Simultaneously, the U-shaped support automatically clamps the side wall of the steel box girder. No manual assistance is required throughout the process; the clamping force automatically adapts to gravity, preventing damage to the steel box girder surface and achieving full self-locking during hoisting, eliminating the risk of loosening and enhancing operational safety.

[0021] The device can be adapted to steel box girders of different sizes and weights without the need to change the lifting tools. It is highly versatile and suitable for various bridge steel box girder hoisting and construction scenarios. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments 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.

[0023] Figure 1 This is a schematic diagram of the overall structure of a steel box girder construction hoisting device according to the present invention;

[0024] Figure 2 This is a schematic diagram of the connection structure between the horizontal limiting component and the angle adaptive component of a steel box girder construction hoisting device according to the present invention;

[0025] Figure 3 This is a schematic diagram of the angle adaptive component connection structure of a steel box girder construction hoisting device according to the present invention;

[0026] Figure 4 This is a schematic diagram of the arc-shaped guide plate structure of a steel box girder construction hoisting device according to the present invention;

[0027] Figure 5 This is a schematic diagram of the connection structure between the horizontal limiting component and the gravity lifting clamping component of a steel box girder construction hoisting device according to the present invention;

[0028] Figure 6 This is a schematic diagram of the horizontal limiting component structure of a steel box girder construction hoisting device according to the present invention;

[0029] Figure 7 This is a schematic diagram of the lifting section structure of a steel box girder construction hoisting device according to the present invention;

[0030] Figure 8 This is a schematic diagram of the gravity lifting and clamping component structure of a steel box girder construction hoisting device according to the present invention.

[0031] In the diagram, 1. Lifting ring one; 2. Lifting cable; 3. Angle adaptive component; 301. Bearing plate; 302. Arc-shaped track frame; 303. Sector gear plate; 304. Arc-shaped swing plate; 305. Arc-shaped guide plate one; 306. Arc-shaped guide plate two; 307. Slider two; 308. Slider one; 309. Limiting plate one; 310. Adjusting plate; 311. Lifting ring two; 312. Motor; 313. Worm gear; 314. Support; 4. Horizontal limiting component; 401. Pyramid plate; 402. Magnetic suction plate; 403. Support rod; 404. Pad block; 405. Buffer spring one; 406. Support plate; 407. Fixing block; 408. Sleeve; 409. Top rod; 410. T-shaped plate; 411. Displacement limiter 412. Plate; 413. Airbag; 414. Connecting pipe; 415. Guide rod; 416. Buffer spring II; 417. Limiting plate II; 418. Ball; 419. Buffer spring III; 5. Gravity lifting clamping mechanism; 501. U-shaped support seat; 502. Gravity plate; 503. Piston column; 504. Side gear tooth; 505. Cavity column; 506. Notch; 507. Gear I; 508. Shaft; 509. Gear II; 510. Gear plate; 511. Piston push rod I; 512. Piston push rod II; 513. Air tank I; 514. Air tank II; 515. Mounting seat; 516. Support column I; 517. Support column II; 518. Air supply pipe; 519. Air transmission pipe; 520. Support column III. Detailed Implementation

[0032] 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.

[0033] Please see Figures 1-8This invention provides a technical solution for a steel box girder construction hoisting device, including a lifting ring 1 and slings 2. Multiple slings 2 are provided, and their tops are all connected to the lifting ring 1. An angle adaptive component 3 is provided at the other end of each sling 2. A horizontal limiting component 4 is provided at the bottom of the angle adaptive component 3, and a gravity lifting clamping mechanism 5 is provided below the horizontal limiting component 4 at the bottom of the steel box girder. The angle adaptive component 3 includes a bearing plate 301, which is fixedly connected to the horizontal limiting component 4. Four symmetrical arc-shaped track frames 302 are provided at the center of the four sides of the top of the bearing plate 301. A sector gear plate 303 and an arc swing plate 304 are respectively provided in the inner grooves of a corresponding set of arc-shaped track frames 302. The sector gear plate 303 and... Arc-shaped swing plates 304 are intersected by arc-shaped guide plates 305 and 306. A sliding block 307 is provided in the groove of arc-shaped guide plate 306. A connecting rod is provided at the bottom of the sliding block 307, and a sliding block 308 is provided at the bottom of the connecting rod, which slides with arc-shaped guide plate 305. A limiting plate 309 is provided at the bottom of the sliding block 308. An adjusting plate 310 is provided at the top of the sliding block 307, and a lifting ring 311 is provided at the center of the top of the adjusting plate 310. The other end of the lifting cable 2 is connected to the lifting ring 311. A threaded assembly is provided at the bottom of the sector gear plate 303, and the threaded assembly is fixed to the top side of the bearing plate 301. The horizontal limiting assembly 4 is mechanically linked to the gravity lifting clamping mechanism 5.

[0034] See Figure 3 , Figure 4 The threaded assembly includes a motor 312. The bottom of the motor 312 is fixed to the top side of the support plate 301 by a motor mounting seat. The output end of the motor 312 is connected to a worm 313 that meshes with a sector gear plate 303. Supports 314 are sleeved on both sides of the worm 313, and the bottom of the support 314 is fixed to the top of the support plate 301.

[0035] See Figure 6 , Figure 7The horizontal limiting component 4 includes a buffer section and a lifting section. The lifting section is linked with the gravity lifting clamping mechanism 5, and the buffer section is linked with the angle adaptive component 3. The lifting section includes a pyramid plate 401. A magnetic suction plate 402 is provided at the top of the pyramid plate 401, and a support rod 403 is provided at the bottom of the pyramid plate 401. The support rod 403 passes through the steel box girder, and a pad 404 is provided at the bottom of the support rod 403. A buffer spring 405 is sleeved on the support rod 403 between the pad 404 and the bottom of the steel box girder. The buffer section includes several support plates 406. The bottom of the support plate 406 is fixed to the top of the steel box girder, and a fixing block 407 is provided at the top of the support plate 406. The fixing block 407 is fixed to the bottom of the bearing plate 301. A sleeve 408 is provided at the top of the inner side of the support plate 406. A top rod 409 is transversely inserted through the sleeve 408, and the outer side of the top rod 409 passes through the support plate 406 and has a... A T-shaped plate 410 has a displacement limiting plate 411 on the side away from the top rod 409. An airbag 412 is provided on the top inner side of the T-shaped plate 410, and the airbags 412 are connected by a connecting pipe 413. A guide rod 414 is inserted through the lower part of the T-shaped plate 410. The inner side of the guide rod 414 is fixed to the lower center of the outer wall of the support plate 406. A second buffer spring 415 is sleeved on the guide rod 414 between the support plate 406 and the T-shaped plate 410. A second limiting plate 416 is provided at the inner end of the top rod 409. A sphere 417 that matches the inclined side of the pyramid plate 401 is provided on the side of the limiting plate 416 away from the top rod 409. A third buffer spring 418 is sleeved on the top rod 409. The inner end of the third buffer spring 418 is fixed to the side of the second limiting plate 416, and the outer end of the third buffer spring 418 passes through the sleeve 408 and the support plate 406 and is fixed to the side of the T-shaped plate 410.

[0036] See Figure 5 , Figure 8The gravity lifting and clamping mechanism 5 includes a U-shaped support base 501. The top right side of the U-shaped support base 501 is fixed to the bottom of the steel box girder, and the left side of the U-shaped support base 501 clamps the side of the steel box girder. The U-shaped support base 501 has a lifting part and an air storage and conveying part in its groove. The air storage and conveying part is connected to the horizontal limiting component 4. The lifting part includes a gravity plate 502, which is fixed to the horizontal limiting component 4. A piston column 503 is provided at the bottom of the gravity plate 502, and side gear teeth 504 are provided on the side of the piston column 503. A cavity is sleeved on the piston column 503. The hollow column 505 is fixed at its bottom to the center of one side of the groove in the U-shaped support 501. A notch 506 is provided on the upper part of the hollow column 505 on one side of the side gear tooth 504. A gear 507 meshing with the side gear tooth 504 is located at the notch 506. A shaft 508 is inserted through the middle of the gear 507. Both ends of the shaft 508 are movably connected to the inner wall of the U-shaped support 501. A gear 509 is sleeved on the other side of the shaft 508. A gear plate 510 meshing with the gear 509 is located below the gear plate 509. Piston push rods 51 are respectively located on both sides of the gear plate 510. 1. Piston push rod 511 and piston push rod 512 are fitted with telescopically fitted air tank 513 and air tank 514 on the side away from gear plate 510. The bottom of air tank 513 and air tank 514 is provided with mounting base 515. The bottom of mounting base 515 is provided with support column 516. The bottom of support column 516 is fixed in the groove of U-shaped support base 501. Support column 517 is fitted on the side of piston push rod 511 and piston push rod 512 closest to gear plate 510. The bottom of support column 517... The first air tank 514 is fixed in the groove of the U-shaped support base 501; the second air tank 514 is connected to the first air tank 513 through the air supply pipe 518; the side of the first air tank 513 away from the piston push rod 511 is connected to the air supply pipe 519, and the other end of the air supply pipe 519 is connected to the horizontal limiting component 4; the third support column 520 is sleeved on the shaft 508 between the first gear 507 and the second gear 509, and the bottom of the third support column 520 is fixed in the groove of the U-shaped support base 501; the shaft 508 is driven by a battery, and the battery is installed on the outer wall of the U-shaped support base 501.

[0037] After the steel box girder is lifted, its own weight compresses the buffer spring 405, and the pad block 404 is pulled by the gravity plate 502, causing the support rod 403 to move downward. The pyramid plate 401 is pressed down accordingly, and its side slope pushes the ball 417 towards the center. The top rod 409 drives the T-shaped plate 410 to move inward synchronously, and the airbag 412 initially clamps the periphery of the bearing plate 301. At the same time, the downward movement of the gravity plate 502 causes the piston column 503 to descend, and the side gear tooth 504 drives the gear 507 to rotate. Through the shaft 508, the gear 509 rotates, and the gear plate 510 moves horizontally and pushes the piston push rod 511 and the piston push rod 512 to compress the air storage tank 513 and the air storage tank 514. The compressed gas generated in the air storage tank is transported to the airbag 412 through the air supply pipe 518 and the air transmission pipe 519. After the airbag 412 expands, it tightly wraps the bearing plate 301, realizing the all-round horizontal limiting and buffer protection of the steel box girder.

[0038] Throughout the hoisting process, the three major components—angle self-adaptation, horizontal limiting, and gravity clamping—work in tandem without human intervention. The steel box girder remains horizontal and stable at all times, allowing for precise alignment during assembly and welding. This effectively improves construction efficiency and installation accuracy, and ensures the safety of hoisting operations.

[0039] In use, through holes for the support rods 403 to pass through are pre-drilled at the four corners of the steel box girder. The pad 404 is detachably connected to the gravity plate 502. After installation, the top right side of the U-shaped support 501 is attached to the bottom surface of the steel box girder, and the inner left side is clamped to the side of the steel box girder, thus completing the initial clamping and fixing of the steel box girder. The top left side of the U-shaped support 501 is higher than the top right side.

[0040] The crane is connected to the device via lifting ring 1. After the hoisting is started, the sling 2 pulls the adjusting plate 310 via lifting ring 2 311. When the adjusting plate 310 is under tension, the slider 2 307 slides along the arc-shaped guide plate 2 306, and the slider 1 308 slides adaptively along the arc-shaped guide plate 1 305, passively offsetting the angle deviation caused by the hoisting inertia. At the same time, the sensor on the adjusting plate 310 detects the deviation angle in real time and transmits the signal to the control module. The control module drives the motor 312 to start, and the worm gear 313 drives the sector gear plate 303 to swing precisely, actively correcting the hoisting point angle and ensuring the stable hoisting posture of the steel box girder.

[0041] After the steel box girder is lifted, its own weight compresses the bottom buffer spring 405, which in turn presses down on the bottom pad 404. At the same time, the pad 404 is pulled downward by the bottom gravity plate 502. The support rod 403 drives the pyramid plate 401 downward, and the sphere 417 attached to the side slope of the pyramid plate 401 moves towards the center. The top rod 409 drives the T-shaped plate 410 connected to the outer end to move towards the center. The air bladder 412 on the top of the inner wall of the T-shaped plate 410 clamps the periphery of the middle bearing plate 301.

[0042] After the gravity plate 502 moves downward, the side gear 504 on the side of the piston column 503 drives the meshing gear 507 on the side to rotate. The gear 507 drives the shaft 508 to rotate, and the gear 509 on the other side of the shaft 508 rotates. The gear 509 drives the meshing gear plate 510 below to move horizontally, pressing the side piston push rod to move. After the gas tank 514 is compressed and generates gas pressure, the generated gas is transported to the connected air bladder 412 through the gas pipe 519. After the air bladder 412 expands, it fits tightly against the bearing plate 301, which effectively ensures the stability of the steel box girder during the lifting operation and avoids the need to maintain horizontal stability between the two during the assembly and welding with another steel box girder.

[0043] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A steel box girder construction hoisting device, characterized in that, It includes a lifting ring (1) and a sling (2), with multiple slings (2) and the top of each sling connected to the lifting ring (1); An angle adaptive component (3) is provided at the other end of the sling (2). A horizontal limiting component (4) is provided at the bottom of the angle adaptive component (3). A gravity lifting clamping mechanism (5) is provided below the horizontal limiting component (4) at the bottom of the steel box girder. The angle adaptive component (3) includes a support plate (301), which is fixedly connected to the horizontal limiting component (4). The support plate (301) has four symmetrically arranged arc-shaped track frames (302) at the center of its top four sides. A sector gear plate (303) and an arc-shaped swing plate (304) are respectively arranged in the inner grooves of each set of arc-shaped track frames (302). An arc-shaped guide plate first (305) and an arc-shaped guide plate second (306) are arranged intersectingly between the sector gear plate (303) and the arc-shaped swing plate (304). The groove of the arc-shaped guide plate second (306) contains a sliding... The sliding block 2 (307) is dynamically engaged. The bottom of the sliding block 2 (307) is provided with a connecting rod. The bottom of the connecting rod is provided with a sliding block 1 (308) that is slidably engaged with the arc-shaped guide plate 1 (305). The bottom of the sliding block 1 (308) is provided with a limiting plate 1 (309). The top of the sliding block 2 (307) is provided with an adjusting plate (310). The top center of the adjusting plate (310) is provided with a lifting ring 2 (311). The other end of the sling (2) is connected to the lifting ring 2 (311). The bottom of the sector gear plate (303) is provided with a threaded assembly. The threaded assembly is fixed to the top side of the bearing plate (301). The horizontal limiting component (4) is mechanically linked with the gravity lifting clamping mechanism (5).

2. The steel box girder construction hoisting device according to claim 1, characterized in that, The threaded assembly includes a motor (312), the bottom of which is fixed to the top side of the support plate (301) by a motor mounting seat. The output end of the motor (312) is connected to a worm (313) that meshes with a sector gear plate (303). Supports (314) are sleeved on both sides of the worm (313), and the bottom of the support (314) is fixed to the top of the support plate (301).

3. The steel box girder construction hoisting device according to claim 1, characterized in that, The horizontal limiting component (4) includes a buffer part and a lifting part. The lifting part is linked with the gravity lifting clamping mechanism (5), and the buffer part is linked with the angle adaptive component (3).

4. The steel box girder construction hoisting device according to claim 3, characterized in that, The lifting section includes a pyramid plate (401), a magnetic suction plate (402) is provided at the top of the pyramid plate (401), a support rod (403) is provided at the bottom of the pyramid plate (401), the support rod (403) passes through the steel box girder, a pad (404) is provided at the bottom of the support rod (403), and a buffer spring (405) is sleeved on the support rod (403) between the pad (404) and the bottom of the steel box girder.

5. A steel box girder construction hoisting device according to claim 4, characterized in that, The buffer section includes several support plates (406). The bottom of the support plate (406) is fixed to the top of the steel box girder. A fixing block (407) is provided on the top of the support plate (406). The fixing block (407) is fixed to the bottom of the bearing plate (301). A sleeve (408) is provided on the top of the inner side of the support plate (406). A top rod (409) is transversely provided inside the sleeve (408). The outside of the top rod (409) passes through the support plate (406) and has a T-shaped plate (410) at its end. The T-shaped plate (410) is far from the support plate (406). A displacement limiting plate (411) is provided on one side away from the top rod (409). An airbag (412) is provided on the top inner side of the T-shaped plate (410). The airbags (412) are connected by a connecting pipe (413). A guide rod (414) is inserted through the lower part of the T-shaped plate (410). The inner side of the guide rod (414) is fixed at the center of the lower part of the outer wall of the support plate (406). A buffer spring (415) is sleeved on the guide rod (414) between the support plate (406) and the T-shaped plate (410). The inner end of the top rod (409) is provided with a limiting plate two (416). On the side of the limiting plate two (416) away from the top rod (409), there is a ball (417) that matches the side slope of the pyramid plate (401). A buffer spring three (418) is sleeved on the top rod (409).

6. The steel box girder construction hoisting device according to claim 5, characterized in that, The inner end of the buffer spring three (418) is fixed to the side of the limiting plate two (416), and the outer end of the buffer spring three (418) passes through the sleeve (408) and the support plate (406) and is fixed to the side of the T-shaped plate (410).

7. The steel box girder construction hoisting device according to claim 1, characterized in that, The gravity lifting clamping mechanism (5) includes a U-shaped support seat (501), the top right side of the U-shaped support seat (501) is fixed to the bottom of the steel box girder, and the left side of the U-shaped support seat (501) clamps the side of the steel box girder; the U-shaped support seat (501) is provided with a lifting part and an air storage and conveying part in the groove, and the air storage and conveying part is connected to the horizontal limiting component (4).

8. A steel box girder construction hoisting device according to claim 7, characterized in that, The lifting unit includes a gravity plate (502), which is fixed on a horizontal limiting component (4). A piston column (503) is provided at the bottom of the gravity plate (502). Side gear teeth (504) are provided on the side of the piston column (503). A cavity column (505) is sleeved on the piston column (503). The bottom of the cavity column (505) is fixed at the center of one side of the groove of the U-shaped support seat (501). A notch (506) is provided on the upper part of the cavity column (505) on the side of the side gear teeth (504). A gear 1 (507) that meshes with the side gear teeth (504) is provided at the notch (506). A shaft (508) is inserted through the middle of the gear 1 (507). The two ends of the shaft (508) are movably connected to the inner wall of the U-shaped support seat (501). A gear 2 (509) is sleeved on the other side of the shaft (508). Below is a meshing gear plate (510). On both sides of the gear plate (510) are piston push rod 1 (511) and piston push rod 2 (512). On the side away from the gear plate (510) of piston push rod 1 (511) and piston push rod 2 (512), a telescopically cooperating gas storage tank 1 (513) and gas storage tank 2 (514) are fitted. At the bottom of gas storage tank 1 (513) and gas storage tank 2 (514), there is a mounting seat (515). At the bottom of the mounting seat (515), there is a support column 1 (516). The bottom of support column 1 (516) is fixed in the groove of U-shaped support seat (501). On the side of piston push rod 1 (511) and piston push rod 2 (512) close to the gear plate (510), there is a support column 2 (517). The bottom of support column 2 (517) is fixed in the groove of U-shaped support seat (501). Gas storage tank 2 (514) is connected to gas storage tank 1 (513) via gas supply pipe (518); gas storage tank 1 (513) is connected to a gas supply pipe (519) on the side away from piston push rod 1 (511), and the other end of the gas supply pipe (519) is connected to the horizontal limiting component (4).

9. A steel box girder construction hoisting device according to claim 8, characterized in that, A support column three (520) is sleeved on the shaft (508) between gear one (507) and gear two (509), and the bottom of the support column three (520) is fixed in the groove of the U-shaped support seat (501); The shaft (508) is powered by a battery, which is mounted on the outer wall of the U-shaped support (501).

Images