Highly-adaptive adjustable bridge steel box girder hoisting and positioning device

Abstract

The invention relates to the technical field of bridge steel box hoisting, in particular to a high-adaptation adjustable bridge steel box girder hoisting and positioning device which comprises a hoisting frame, and a top plate is fixedly mounted at the top of the hoisting frame. The operation flexibility and accuracy can be greatly improved through a double-motor driving system, a second motor is started, a lead screw rotates, sliding blocks in a guide rail are synchronously driven to slide by means of opposite thread rotating directions at the two ends of the lead screw, bottom clamping arms are driven to flexibly move, steel box girders of different sizes can be accurately clamped, a first motor is started, and the operation efficiency is improved. Power is sequentially transmitted through the synchronous wheel and the synchronous belt, drives the gear and the driving rod to rotate, promotes the lifting hook plate to rotate and stably hooks the side face of the steel box girder, double motors cooperatively operate, automatic control over movement of the clamping arm and the lifting hook plate is achieved, lifting is rapidly and accurately completed under various complex construction conditions, manual operation errors are reduced, and the construction efficiency is improved. The operation efficiency and quality are greatly optimized, and the construction safety is powerfully improved.

Description

Technical Field

[0001] This application relates to the technical field of bridge steel box hoisting, and in particular to a highly adaptable adjustable bridge steel box girder hoisting and positioning device. Background Art

[0002] In modern bridge construction, the bridge steel box girder, as a common and important structural form, with its unique structure of being welded into a box section by steel plates, relies on the top plate to bear loads such as vehicles and transfer them to the web and bottom plate, the web to connect and bear shear force, the bottom plate to cooperate with support structures such as bridge piers to bear the overall bridge and external loads, and in addition, the stiffening ribs enhance the stability and structural strength of the steel plates, showing many advantages such as light self-weight, high strength, large stiffness, good torsional resistance, convenient manufacturing and installation, and beautiful appearance, and is widely used in various bridge projects such as long-span bridges such as suspension bridges and cable-stayed bridges, as well as urban viaducts and cross-sea bridges.

[0003] During the installation process of the bridge steel box girder, the hoisting device is an indispensable auxiliary tool, and accurate positioning is crucial for ensuring the installation quality and construction safety. Some existing hoisting devices already have certain anti-slip and stable clamping functions. For example, a steel box girder anti-slip hoisting device disclosed in a Chinese patent with the publication number "CN218145355U" uses components such as a hoisting frame and a hoisting mechanism, and uses a motor-driven gear transmission to achieve stable clamping of the steel box girder, effectively avoiding the dropping of the steel box girder during hoisting and ensuring construction safety to a certain extent.

[0004] However, current such hoisting devices still have significant limitations. In actual construction, the specifications of bridge steel box girders are diverse and their sizes vary. The existing devices have limited adjustment capabilities and are difficult to flexibly and widely adapt to the clamping requirements of steel box girders of different sizes. The distance between the side support mechanisms on both sides cannot be conveniently adjusted according to the size of the steel box girder, and when the side support mechanisms are adjusted and flipped, they mostly rely on manual operation and cannot achieve automatic rotation adjustment, which greatly affects the construction efficiency and also increases the labor cost and construction risk. These defects seriously restrict the smooth progress of the bridge steel box girder hoisting construction, and there is an urgent need to develop a new type of bridge steel box girder hoisting device with better adaptability, adjustability and automation to meet the increasingly complex bridge construction needs. Summary of the Invention

[0005] In order to improve the clamping stability and adaptability during the application of the existing technology, this application provides a highly adaptable adjustable bridge steel box girder hoisting and positioning device.

[0006] A highly adaptable adjustable bridge steel box girder hoisting and positioning device provided by the present application adopts the following technical solutions: It includes a hoisting frame, on the top of which a top plate is fixedly installed, on the top of the top plate a hanging frame is fixedly installed, in the middle of the top of the hanging frame a lifting ring is fixedly installed, at the bottom of the hoisting frame an adjustable hoisting device is fixedly installed, and inside the adjustable hoisting device a steel box girder body is hoisted and installed.

[0007] The adjustable hoisting device includes a guide rail fixedly installed at the bottom of the hoisting frame, on one side of the guide rail a power mechanism is fixedly installed, inside the guide rail a clamping mechanism is fixedly installed, both sides of the guide rail are movably connected with a transmission mechanism, on the outside of the transmission mechanism a hoisting mechanism is fixedly installed, and the output ends of the transmission mechanism and the power mechanism are in transmission connection.

[0008] Optionally, the power mechanism includes a side frame fixedly installed at one end of the guide rail, on the outside of the side frame a first motor is fixedly installed, the output end of the first motor penetrates through the side frame and is connected with the transmission mechanism, and the hoisting mechanism is connected with the output end of the first motor through the transmission mechanism.

[0009] Optionally, the transmission mechanism includes side plates and synchronous wheels, the synchronous wheel is fixedly connected to the output end of the first motor, the side plates are fixedly installed on both sides of the top of the guide rail, both the front and rear ends of the inner side of the side plates are rotatably connected with driving rods, both ends of the outside of the side plate close to the first motor are rotatably connected with first gears, the first gears are meshed with each other, on the outside of one first gear a synchronous wheel is also fixedly installed, the synchronous wheels are in transmission connection through a synchronous belt, the outer ends of the driving rods are connected with the first gears, and the hoisting mechanism is in transmission connection with the driving rods.

[0010] Optionally, the clamping mechanism includes a lead screw and a second motor, the second motor is fixedly connected to the end of the guide rail away from the power mechanism, the lead screw is rotatably connected inside the guide rail, the thread directions of both ends of the lead screw are opposite, both ends of the lead screw are threadedly connected with sliders, at the bottom of the sliders clamping arms are fixedly installed, the clamping arms are integrally arranged in an L shape, the end of the lead screw is connected with the output end of the second motor, and the clamping arms are inserted into both sides of the steel box girder body.

[0011] Optionally, the hoisting mechanism includes a bearing component movably connected to both sides of the guide rail, at the bottom of the bearing component a limiting component is fixedly installed, the top of the limiting component is clamped with the guide rail, at the top of the bearing component a linkage component is fixedly connected, the inner end of the linkage component is sleeved on the outer surface of the driving rod, and on the outside of the linkage component a hoisting support and fixing component is fixedly installed.

[0012] Optionally, the bearing assembly includes sliding grooves formed on both sides of the guide rail. An movable block is slidably connected inside the sliding grooves. An mounting bracket is fixedly installed on the outer side of the movable block. The top of the mounting bracket is connected to the linkage assembly, and the bottom of the mounting bracket is connected to the limiting assembly.

[0013] Optionally, the linkage assembly includes a linkage base frame fixedly connected to the top of the mounting bracket. A rotating shaft is rotatably connected to the outer end inside the linkage base frame. Both ends of the rotating shaft penetrate through the linkage base frame. A second gear is fixedly connected to the middle of the outer surface of the rotating shaft. A sliding sleeve is rotatably connected to the inner end inside the linkage base frame. The sliding sleeve is slidably connected to the outer surface of the driving rod. A toothed ring is fixedly connected to the middle of the outer surface of the sliding sleeve. The toothed ring is meshed with the second gear. The cross-sectional shape of the inside of the sliding sleeve and the cross-sectional shape of the driving rod are both set to be regular hexagons. The hoisting and supporting assembly is fixedly installed at the outer end of the rotating shaft.

[0014] Optionally, the hoisting and supporting assembly includes a concave frame fixedly installed at the outer end of the rotating shaft. The concave frame is rotatably connected to the outside of the linkage base frame. A sleeve is fixedly installed on the outside of the concave frame. A sliding rod is slidably connected inside the sleeve. A hanging hook plate is fixedly installed at the outer end of the sliding rod. The hanging hook plate is hooked on the front, rear, left, and right sides of the steel box girder body. A limiting screw is threadedly connected to the outer end of the sleeve. Limiting holes are arranged at equal intervals and linearly on the outer side of the sliding rod. The end of the limiting screw is inserted into the limiting hole. The limiting screw is set as a hand-tightening screw. The cross-sectional shape of the sliding rod and the cross-sectional shape of the inside of the sleeve are both set to be convex-shaped.

[0015] Optionally, the limiting assembly includes a bottom frame and clamping holes. The clamping holes are arranged at equal intervals and linearly on both sides of the bottom of the guide rail. The bottom frame is fixedly connected to the bottom of the mounting bracket. A limiting spring is fixedly connected inside the bottom frame. A round plate is fixedly installed at the top of the limiting spring. A clamping pin is fixedly connected to the top of the round plate. The end of the clamping pin penetrates through the bottom frame and is inserted into the clamping hole.

[0016] Optionally, a connecting shaft is fixedly connected to the bottom of the round plate. The bottom of the connecting shaft penetrates through the bottom frame and is fixedly connected to a bridge handrail. The overall cross-sectional shape of the inner cavity of the guide rail and the inner cavity of the sliding groove is set to be convex-shaped. The side shapes of the slider and the movable block are also set to be convex-shaped.

[0017] In summary, the present application includes the following beneficial technical effects:

[0018] 1. This bridge steel box girder hoisting device integrates an adjustable hoister, a power mechanism and a clamping mechanism, and their coordinated operation presents excellent performance. From the equipment inspection before startup to the actual hoisting operation, each mechanism closely cooperates and is interlocked. Facing different bridge construction scenarios, whether it is the compact space of an urban viaduct or the complex environment of a cross-sea bridge, this device can quickly adapt. When dealing with steel box girders of different specifications, the adjustable hoister accurately positions, the power mechanism provides stable power, and the clamping mechanism reliably fixes, comprehensively collaborating to lay a solid foundation for efficient and safe hoisting operations, playing a stable and reliable role under complex and changeable construction conditions and ensuring the smooth progress of bridge construction;

[0019] 2. This device uses a dual-motor drive system, which can greatly improve the operation flexibility and accuracy. When the second motor is turned on, the lead screw rotates. With the opposite thread directions at both ends, it synchronously drives the slider in the guide rail to slide, driving the bottom clamping arm to displace flexibly, and can accurately clamp steel box girders of different sizes. When the first motor is started, the power is transmitted sequentially through the synchronous pulley and synchronous belt, driving the gear and the drive rod to operate, causing the hanging hook plate to rotate and firmly hook the side of the steel box girder. The dual motors cooperate to achieve the automatic control of the movement of the clamping arm and the hanging hook plate, quickly and accurately completing the hanging connection under various complex construction conditions, reducing manual operation errors, greatly optimizing the operation efficiency and quality, and effectively enhancing the construction safety;

[0020] 3. By setting up a hoisting mechanism, this device can further improve the operation convenience. During use, the construction worker pulls the bridge handrail at the bottom of the coupling shaft. The movement of the coupling shaft drives the pin at the top of the round plate to move downwards, squeezing the limit spring, so that the pin disengages from the pin hole. At this time, the movable block can slide freely in the chute. As the movable block slides, the mounting frame and the connected hoisting support and fixing components move horizontally. During the process, the sliding sleeve on the base frame at the top of the mounting frame cooperates with the movable block to ensure smooth adjustment. After the adjustment is in place, the limit spring resets and pushes the pin to insert into the pin hole again, quickly realizing positioning and fixing. This design can flexibly adjust the component spacing, accurately adapt to the horizontal hanging connection requirements of steel box girders of different sizes, is widely applicable to various bridge projects, and significantly saves construction time and labor costs;

[0021] 4. During the actual hoisting operation of this device, the vertical adjustment function of the device is extremely precise. By operating the sliding rod in the sleeve, the total length of the sleeve and the sliding rod is changed, thereby driving the hanging hook plate to move precisely up and down, which can adapt to the hanging connection requirements of steel box girders of different heights. Whether it is the steel box girder of a low urban pedestrian bridge or the steel box girder of a tall large bridge, it can be properly handled. After completing the hanging installation, the construction worker twists the limit screw to make it stably insert into the limit hole, effectively fixing the sleeve and the sliding rod. From the hoisting preparation to the fixation after completion, this design fully meets the vertical adjustment requirements of different steel box girders, improves the overall use convenience and adaptability of the device, and provides a solid guarantee for the efficiency and safety of the bridge steel box girder hoisting construction. Description of the Drawings

[0022] Figure 1 is a schematic diagram of the overall structure in an embodiment of the present application;

[0023] Figure 2 is a schematic diagram of the bottom view structure in an embodiment of the present application;

[0024] Figure 3 is a schematic diagram of the top view structure in an embodiment of the present application;

[0025] Figure 4 is a schematic diagram of the bottom view structure in an embodiment of the present application;

[0026] Figure 5 is a schematic diagram of the front view structure in an embodiment of the present application;

[0027] Figure 6 is a schematic diagram of the top view structure of the hoisting mechanism in an embodiment of the present application;

[0028] Figure 7 is a schematic diagram of the bottom view structure of the hoisting mechanism in an embodiment of the present application;

[0029] Figure 8 is in an embodiment of the present application Figure 3 magnified schematic diagram of the structure at position A;

[0030] Figure 9 is in an embodiment of the present application Figure 5 magnified schematic diagram of the structure at position B.

[0031] Reference numerals: 1, suspension frame; 2, top plate; 3, hanging frame; 4, suspension ring; 5, steel box girder body; 6, adjustable hoisting device; 61, guide rail; 62, power mechanism; 621, side frame; 622, first motor; 63, clamping mechanism; 631, lead screw; 632, second motor; 633, slider; 634, clamping arm; 64, transmission mechanism; 641, side plate; 642, synchronous pulley; 643, driving rod; 644, first gear; 645, synchronous belt; 65, hoisting mechanism; 651, bearing assembly; 6511, chute; 6512, movable block; 6513, mounting frame; 652, limiting assembly; 6521, chassis; 6522, card hole; 6523, limiting spring; 6524, circular plate; 6525, pin; 6526, coupling shaft; 6527, bridge handrail; 653, linkage assembly; 6531, linkage base frame; 6532, rotating shaft; 6533, second gear; 6534, sliding sleeve; 6535, toothed ring; 654, hoisting support and fixing assembly; 6541, concave frame; 6542, sleeve; 6543, sliding rod; 6544, suspension hook plate; 6545, limiting screw; 6546, limiting hole. Detailed Description of the Invention

[0032] The following is combined with Figures 1-9 This application is described in further detail.

[0033] The present application discloses a highly adaptable and adjustable bridge steel box girder hoisting and positioning device. Figures 1-9 As shown, a highly adaptable and adjustable bridge steel box girder hoisting and positioning device adopts the following technical solution: comprising a hoisting frame 1, a top plate 2 is fixedly installed on the top of the hoisting frame 1, a hanger 3 is fixedly installed on the top of the top plate 2, a hoisting ring 4 is fixedly installed in the middle of the top of the hanger 3, an adjustable hoist 6 is fixedly installed on the bottom of the hoisting frame 1, and a steel box girder body 5 is hoisted and installed on the inner side of the adjustable hoist 6;

[0034] The adjustable hoist 6 includes a guide rail 61, which is fixedly installed at the bottom of the hanging frame 1. A power mechanism 62 is fixedly installed on one side of the guide rail 61, a clamping mechanism 63 is fixedly installed inside the guide rail 61, and transmission mechanisms 64 are movably connected to both sides of the guide rail 61. A hoisting mechanism 65 is fixedly installed on the outer side of the transmission mechanism 64, and the output end of the transmission mechanism 64 and the power mechanism 62 are transmission-connected. In this highly adaptable and adjustable bridge steel box girder hoisting and positioning device, the top plate 2 is fixed on the top of the hanging frame 1 to provide stable support for the entire device, and the hanger 3 and the lifting ring 4 above it are used to be connected to the external lifting equipment to realize the overall lifting of the device. The adjustable hoist 6 installed at the bottom of the hanging frame 1 is the core component, and the guide rail 61 is fixed at the bottom of the hanging frame 1 as the installation basis and running track of other mechanisms, and the power mechanism 63 is fixedly installed inside the guide rail 61. Mechanism 62 is installed on one side of the guide rail 61 to provide a power source for the entire adjustable hoist 6. When the power mechanism 62 is started, its output end transmits power to the transmission mechanism 64. After the transmission mechanism 64 is driven, it drives the hoisting mechanism 65 to move, thereby realizing the hoisting operation of the steel box girder body 5. At the same time, the clamping mechanism 63 inside the guide rail 61 can clamp and fix the steel box girder body 5 under the action of the power mechanism 62 or the related linkage mechanism, thereby ensuring the stability of the steel box girder during the hoisting process. Through the coordinated operation of the power mechanism 62, the transmission mechanism 64, the hoisting mechanism 65 and the clamping mechanism 63 on the basic structure of the guide rail 61, the efficient, stable and accurate hoisting and positioning operation of the steel box girder body 5 is completed, thereby meeting the diverse needs for positioning and hoisting operations in hoisting projects of steel box girders of different bridges.

[0035] Please refer to Figures 1-5, the power mechanism 62 includes a side frame 621. The side frame 621 is fixedly installed at one end of the guide rail 61. A first motor 622 is fixedly installed on the outer side of the side frame 621. The output end of the first motor 622 penetrates through the side frame 621 and is connected to the transmission mechanism 64. The hoisting mechanism 65 is connected to the output end of the first motor 622 through the transmission mechanism 64. The transmission mechanism 64 includes side plates 641 and synchronous pulleys 642. The synchronous pulley 642 is fixedly connected to the output end of the first motor 622. The side plates 641 are fixedly installed on both sides of the top of the guide rail 61. Driving rods 643 are rotatably connected to both the front and rear ends of the inner side of the side plates 641. First gears 644 are rotatably connected to both ends of the outer side of the side plates 641 near the first motor 622. The first gears 644 are meshed with each other. A synchronous pulley 642 is also fixedly installed on the outer side of one of the first gears 644. The synchronous pulleys 642 are connected by a synchronous belt 645. The outer end of the driving rod 643 is connected to the first gear 644. The hoisting mechanism 65 is in transmission connection with the driving rod 643. The power mechanism 62 is the power source for the operation of the entire hoisting and positioning device. The side frame 621 is stably installed at one end of the guide rail 61, providing a reliable installation support for the first motor 622. When the first motor 622 starts to operate, the power output from its output end is directly transmitted to the synchronous pulley 642 fixedly connected to it, causing it to start rotating. Since the synchronous pulleys 642 are connected by a synchronous belt 645, the rotation of one synchronous pulley 642 can drive the other synchronous pulley 642 to rotate synchronously. At the same time, one of the first gears 644 rotatably connected to both ends of the outer side of the side plates 641 near the first motor 622 is fixedly connected to the synchronous pulley 642. This synchronous pulley 642 drives the first gear 644 connected to it to rotate. Also, because the two first gears 644 are meshed with each other, the rotation of one first gear 644 will drive the other first gear 644 to rotate in the opposite direction synchronously. And the outer end of the driving rod 643 is connected to the first gear 644. The rotation of the first gear 644 further drives the driving rod 643 to rotate. When the driving rod 643 rotates, it transmits the power to the hoisting mechanism 65 in transmission connection with it, ultimately realizing the driving of the hoisting mechanism 65, enabling it to complete corresponding actions according to the predetermined design, and realizing the hoisting operation of the steel box girder. The entire power transmission process is closely linked, precise and efficient, ensuring the stable operation of the device.

[0036] Please refer to Figures 6-7, the hoisting support assembly 654 includes a concave frame 6541. The concave frame 6541 is fixedly installed at the outer end of the rotating shaft 6532. The concave frame 6541 is rotatably connected to the outside of the linkage base frame 6531. A sleeve 6542 is fixedly installed on the outside of the concave frame 6541. A sliding rod 6543 is slidably connected inside the sleeve 6542. A hoisting hook plate 6544 is fixedly installed at the outer end of the sliding rod 6543. The hoisting hook plate 6544 is hooked on the front, rear, both sides of the steel box girder body 5. The outer end of the sleeve 6542 is threadedly connected with a limit screw 6545. A plurality of limit holes 6546 are arranged at equal intervals and linearly on the outside of the sliding rod 6543. The end of the limit screw 6545 is inserted into the inside of the limit hole 6546. The limit screw 6545 is set as a hand-tightening screw. The cross-sectional shape of the sliding rod 6543 and the inner cross-sectional shape of the sleeve 6542 are both set as convex shapes. The limit assembly 652 includes a bottom frame 6521 and a clamping hole 6522. The clamping holes 6522 are arranged at equal intervals and linearly on both sides of the bottom of the guide rail 61. The bottom frame 6521 is fixedly connected to the bottom of the mounting frame 6513. A limit spring 6523 is fixedly connected inside the bottom frame 6521. A round plate 6524 is fixedly installed at the top of the limit spring 6523. A clamping pin 6525 is fixedly connected to the top of the round plate 6524. The end of the clamping pin 6525 passes through the bottom frame 6521 and is inserted into the inside of the clamping hole 6522. A connecting shaft 6526 is fixedly connected to the bottom of the round plate 6524. The bottom of the connecting shaft 6526 passes through the bottom frame 6521 and is fixedly connected to a bridge-type handrail 6527. The overall cross-sectional shape of the inner cavity of the guide rail 61 and the inner cavity of the chute 6511 are both set as convex shapes. The side shapes of the slider 633 and the movable block 6512 are also both set as convex shapes. The hoisting support assembly 654 and the limit assembly 652 cooperate to ensure the safe hoisting of the steel box girder. The concave frame 6541 is fixed at the outer end of the rotating shaft 6532 and can rotate around the outside of the linkage base frame 6531, providing an installation basis for subsequent components. When the hoisting height needs to be adjusted, the sliding rod 6543 inside the sleeve 6542 can stably slide due to the convex cross-sectional design of the two, driving the hoisting hook plate 6544 at the outer end to move up and down, adapting to the steel box girder body 5 of different heights, and hooking on the front, rear, both sides of it. After the adjustment is in place, rotate the hand-tightening limit screw 6545 so that its end is inserted into the corresponding limit hole 6546 on the outside of the sliding rod 6543. Utilize the cooperation between the screw and the limit hole 6546 to fix the relative position of the sliding rod 6543 and the sleeve 6542, preventing the height from changing during the hoisting process. Regarding the limit assembly 652, the bottom frame 6521 is fixed to the bottom of the mounting frame 6513. The internal limit spring 6523 is connected to the round plate 6524. The clamping pin 6525 on the round plate 6524 passes through the bottom frame 6521 and cooperates with the clamping holes 6522 linearly arranged on both sides of the bottom of the guide rail 61. When the lateral position of the mounting frame 6513 needs to be adjusted, pull the bridge-type handrail 6527 at the bottom of the connecting shaft 6526. The connecting shaft 6526 drives the round plate 6524 to move downwards, compressing the limit spring 6523, and the clamping pin 6525 disengages from the clamping hole 6522.At this time, since the guide rail 61 and the sliding groove 6511, and the slider 633 and the movable block 6512 are all designed in a convex shape, the movable block 6512 can slide stably in the sliding groove 6511, driving the mounting frame 6513 to displace horizontally, and then adjusting the position of the hoisting support and fixing assembly 654. After the adjustment is completed, the bridge-type handrail 6527 is loosened, the limiting spring 6523 resets, pushing the circular plate 6524 to move upward, and the pin 6525 is inserted into the pin hole 6522 again, completing the horizontal positioning of the mounting frame 6513 and the hoisting support and fixing assembly 654, ensuring the stability and accuracy of the entire hoisting process.

[0037] Please refer to Figures 1-7 The hoisting mechanism 65 includes a bearing assembly 651. The bearing assembly 651 is movably connected to both sides of the guide rail 61. A limiting assembly 652 is fixedly installed at the bottom of the bearing assembly 651. The top of the limiting assembly 652 is clamped with the guide rail 61. A linkage assembly 653 is fixedly connected to the top of the bearing assembly 651. The inner end of the linkage assembly 653 is sleeved on the outer surface of the driving rod 643. A hoisting support and fixing assembly 654 is fixedly installed on the outer side of the linkage assembly 653. The bearing assembly 651 includes sliding grooves 6511 opened on both sides of the guide rail 61. An movable block 6512 is slidably connected inside the sliding grooves 6511. An mounting frame 6513 is fixedly installed on the outer side of the movable block 6512. The top of the mounting frame 6513 is connected to the linkage assembly 653, and the bottom of the mounting frame 6513 is connected to the limiting assembly 652. The linkage assembly 653 includes a linkage base 6531. The linkage base 6531 is fixedly connected to the top of the mounting frame 6513. The outer end of the inner part of the linkage base 6531 is rotatably connected to a rotating shaft 6532. Both ends of the rotating shaft 6532 penetrate through the linkage base 6531. A second gear 6533 is fixedly connected to the middle of the outer surface of the rotating shaft 6532. The inner end of the inner part of the linkage base 6531 is rotatably connected to a sliding sleeve 6534. The sliding sleeve 6534 is slidably connected to the outer surface of the driving rod 643. A toothed ring 6535 is fixedly connected to the middle of the outer surface of the sliding sleeve 6534. The toothed ring 6535 is meshed with the second gear 6533. The inner cross-sectional shape of the sliding sleeve 6534 and the cross-sectional shape of the driving rod 643 are both set as regular hexagons. The hoisting support and fixing assembly 654 is fixedly installed at the outer end of the rotating shaft 6532. This hoisting mechanism 65 realizes the efficient hoisting of the steel box girder through the coordinated work of the bearing assembly 651, the linkage assembly 653 and the hoisting support and fixing assembly 654. The sliding grooves 6511 in the bearing assembly 651 are opened on both sides of the guide rail 61, and the movable block 6512 can slide smoothly in the sliding grooves 6511, which benefits from the matching structural design of the two. When the position of the hoisting mechanism 65 needs to be adjusted, the movable block 6512 displaces in the sliding grooves 6511, driving the outer mounting frame 6513 to move. The mounting frame 6513 is also connected to the linkage assembly 653 and the limiting assembly 652, thus realizing the overall position adjustment. At this time, the limiting assembly 652 can control the movement and fixation of the mounting frame 6513 by engaging with or disengaging from the guide rail 61.

[0038] In the linkage assembly 653, the linkage base frame 6531 is fixed to the top of the mounting frame 6513. The sliding sleeve 6534 at the inner end of its interior cooperates with the driving rod 643. The regular hexagonal cross-sectional shapes of the sliding sleeve 6534 and the driving rod 643 ensure that the sliding sleeve 6534 can rotate with the rotation of the driving rod 643 and can also slide along the driving rod 643. When the driving rod 643 rotates, it drives the sliding sleeve 6534 to rotate, and the toothed ring 6535 on the outer surface of the sliding sleeve 6534 rotates accordingly. Since the toothed ring 6535 is meshed and connected with the second gear 6533, the rotation of the toothed ring 6535 causes the second gear 6533 to rotate, which in turn drives the rotation of the rotating shaft 6532 fixedly connected to the second gear 6533. The hoisting support and fixing assembly 654 is installed at the outer end of the rotating shaft 6532. The rotation of the rotating shaft 6532 enables the hoisting support and fixing assembly 654 to flexibly change its angle and position. When hoisting the steel box girder, the hoisting support and fixing assembly 654 can be adjusted according to actual needs to stably support and hoist the steel box girder. Each component cooperates with each other to accurately complete the hoisting task.

[0039] Please refer to Figures 1-5, the clamping mechanism 63 includes a lead screw 631 and a second motor 632. The second motor 632 is fixedly connected to one end of the guide rail 61 away from the power mechanism 62. The lead screw 631 is rotatably connected to the inside of the guide rail 61. The thread directions at both ends of the lead screw 631 are opposite. Both ends of the lead screw 631 are threadedly connected with sliders 633. A clamping arm 634 is fixedly installed at the bottom of the slider 633. The clamping arm 634 is integrally L-shaped. The end of the lead screw 631 is connected to the output end of the second motor 632. The clamping arms 634 are inserted into both sides of the steel box girder body 5. The main function of the clamping mechanism 63 of this device is to firmly clamp the steel box girder body 5 to ensure the safety of the hoisting process. The second motor 632 is fixed at one end of the guide rail 61 away from the power mechanism 62. When the second motor 632 is started, its output end starts to rotate. Since the end of the lead screw 631 is connected to the output end of the second motor 632, the lead screw 631 will rotate accordingly. The special design of the lead screw 631 is that the thread directions at both ends are opposite. This design makes it so that when the lead screw 631 rotates, the two sliders 633 threadedly connected to it will move towards or away from each other. That is to say, as the lead screw 631 rotates, the two sliders 633 will reciprocate synchronously inside the guide rail 61; a clamping arm 634 that is integrally L-shaped is fixedly installed at the bottom of the slider 633. The sliding of the slider 633 will drive the clamping arm 634 to move synchronously. When the two sliders 633 slide towards each other, the clamping arms 634 will also move towards each other and gradually approach both sides of the steel box girder body 5 until they are inserted into both sides of the steel box girder body 5, thereby realizing the clamping and fixing of the steel box girder body 5. Conversely, when the sliders 633 slide away from each other, the clamping arms 634 will move away from the steel box girder body 5 and release the clamping on it. In this way, the clamping mechanism 63 can flexibly adjust the clamping state according to actual needs to adapt to steel box girder bodies 5 of different sizes and shapes, ensuring the stability of the steel box girder body 5 during the hoisting process.

[0040] The implementation principle of a highly adaptable and adjustable hoisting and positioning device for bridge steel box girders in an embodiment of the present application is as follows: In the hoisting operation of the bridge steel box girder, this device demonstrates excellent performance and adaptability through the coordinated operation of the adjustable hoisting device 6, the power mechanism 62, and the clamping mechanism 63. When the second motor 632 is started, the motor rotates to drive the lead screw 631. Since the thread directions at both ends of the lead screw 631 are opposite, as the lead screw 631 rotates, it can synchronously drive the slider 633 inside the guide rail 61 to slide reciprocally. The sliding of the slider 633 further drives the clamping arm 634 connected to its bottom to perform reciprocating displacement. Through this mechanism, the auxiliary clamping and fixing operation of the steel box girder body 5 with different sizes can be flexibly carried out, significantly improving the applicability of the device to steel box girders of various specifications. At the same time, when the first motor 622 is started, the motor drives the synchronous pulley 642 to rotate. Under the action of the synchronous belt 645, it drives another synchronous pulley 642 to rotate synchronously. The second motor 632 drives the first gear 644 connected to it to rotate. Since the two first gears 644 are meshed with each other, the rotation of one first gear 644 can drive the other first gear 644 to rotate synchronously. The rotation of the two first gears 644 further drives the two drive rods 643 to rotate. The rotation of the drive rod 643 drives the sliding sleeve 6534 sleeved on its outer surface to rotate. It should be noted that the cross-sectional shapes of the inner side of the sliding sleeve 6534 and the drive rod 643 are both designed as regular hexagons. This special structural design ensures that the sliding sleeve 6534 can rotate stably at the inner end of the linkage base frame 6531, and then drives the toothed ring 6535 connected to it to rotate. The toothed ring 6535 is meshed with the second gear 6533. The rotation of the toothed ring 6535 causes the second gear 6533 to rotate. The rotation of the second gear 6533 finally drives the rotating shaft 6532 to rotate. As the rotating shaft 6532 rotates, the concave frame 6541 connected to it rotates. The rotation of the concave frame 6541 drives the hanging hook plate 6544 to rotate, thereby realizing the function of stably hooking the side of the steel box girder body 5, greatly enhancing the stability of the steel box girder during the hanging process. Particularly importantly, during the entire hanging process, through the coordinated operation of the first motor 622 and the second motor 632, the automatic control of the movement of the clamping arm 634 and the hanging hook plate 6544 can be realized, making the hanging and installation process of the steel box girder body 5 faster and more convenient, effectively improving the operation convenience of this device in actual use, and further optimizing the efficiency and quality of the steel box girder hanging operation;

[0041] The hoisting mechanism 65 provided in this device also has high flexibility and adaptability. When it is necessary to adjust the lateral position of the hoisting mechanism 65, it can be achieved by operating the bridge-type handrail 6527 at the bottom of the coupling shaft 6526. Specifically, when the bridge-type handrail 6527 is pulled downward, the movement of the bridge-type handrail 6527 drives the coupling shaft 6526 to act, thereby causing the pin 6525 at the top of the circular plate 6524 to move downward. During the downward movement of the circular plate 6524, the limit spring 6523 is compressed and in a contracted state. When the pin 6525 moves downward to disengage from the inside of the card hole 6522, the movable block 6512 can slide freely inside the chute 6511. By adjusting the lateral sliding of the movable block 6512, the lateral displacement adjustment of the mounting bracket 6513 on the movable block 6512 can be achieved. During the lateral displacement of the mounting bracket 6513, the sliding sleeve 6534 on the base frame at the top of the mounting bracket 6513 can slide flexibly on the outer surface of the driving rod 643, cooperating with the movable block 6512 to ensure the smoothness of the entire adjustment process. As the mounting bracket 6513 undergoes lateral displacement, the associated hoisting support and fixation assembly 654 can also achieve lateral displacement adjustment. In this way, the distance between the hoisting support and fixation assemblies 654 can be adjusted flexibly and stably, enabling it to accurately adapt to the hoisting and installation requirements of steel box girder bodies 5 of different sizes during actual use. After completing the lateral displacement adjustment, simply release the bridge-type handrail 6527, and the limit spring 6523 will immediately reset, pushing the circular plate 6524 upward. The upward movement of the circular plate 6524 drives the pin 6525 at its top to re-insert into the card hole 6522. Through the tight engagement between the card hole 6522 and the pin 6525, the rapid positioning and fixation of the adjusted hoisting support and fixation assembly 654 are achieved. In addition, during actual hoisting operations, the total length of the sleeve 6542 and the sliding rod 6543 can be adjusted by adjusting the sliding of the sliding rod 6543 inside the sleeve 6542. This adjustment process can drive the hoisting hook plate 6544 to move up and down, enabling the hoisting hook plate 6544 to further adapt to steel box girder bodies 5 of different sizes. After the hoisting and installation operation is completed, by twisting the limit screw 6545, it is stably inserted into the inside of the limit hole 6546. Through the mutual clamping and limiting between the limit screw 6545 and the limit hole 6546, the installation and fixation of the sleeve 6542 and the sliding rod 6543 are achieved. In summary, this device exhibits extremely high adaptation and adjustment performance during the overall use process, can meet the hoisting requirements of steel box girder bodies 5 of different sizes to the greatest extent, and significantly improves the overall use convenience and adaptation performance of the device.

[0042] The above are all the preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A highly adaptable and adjustable bridge steel box girder hoisting and positioning device, characterized in that; The invention comprises a hanging frame (1), a top plate (2) is fixedly mounted on the top of the hanging frame (1), a hanging frame (3) is fixedly mounted on the top of the top plate (2), a hanging ring (4) is fixedly mounted in the middle of the top of the hanging frame (3), an adjustable hanging device (6) is fixedly mounted on the bottom of the hanging frame (1), and a steel box beam body (5) is hung and mounted on the inner side of the adjustable hanging device (6); The adjustable hoist (6) comprises a guide rail (61), wherein the guide rail (61) is fixedly mounted on the bottom of the hanging frame (1), a power mechanism (62) is fixedly mounted on one side of the guide rail (61), a clamping mechanism (63) is fixedly mounted inside the guide rail (61), transmission mechanisms (64) are movably connected to both sides of the guide rail (61), a hoisting mechanism (65) is fixedly mounted on the outer side of the transmission mechanism (64), and the transmission mechanism (64) is in driving connection with the output end of the power mechanism (62).

2. According to claim 1, a highly adaptable and adjustable bridge steel box girder hoisting and positioning device is characterized in that: The power mechanism (62) comprises a side frame (621), the side frame (621) is fixedly mounted on one end of the guide rail (61), a first motor (622) is fixedly mounted on the outer side of the side frame (621), an output end of the first motor (622) passes through the side frame (621) and is connected to a transmission mechanism (64), and the hoisting mechanism (65) is connected to the output end of the first motor (622) via the transmission mechanism (64).

3. The highly adaptable and adjustable bridge steel box girder hoisting and positioning device according to claim 2 is characterized in that: The transmission mechanism (64) comprises a side plate (641) and a synchronous wheel (642), wherein the synchronous wheel (642) is fixedly connected to the output end of the first motor (622), and the side plate (641) is fixedly installed on both sides of the top of the guide rail (61). The front and rear ends of the inner side of the side plate (641) are both rotatably connected to a driving rod (643), and the outer ends of the side plate (641) close to the first motor (622) are both rotatably connected to a first gear (644), and the first gears (644) are meshed and connected with each other. A synchronous wheel (642) is also fixedly installed on the outer side of a first gear (644), and the synchronous wheels (642) are connected to each other through a synchronous belt (645). The outer end of the driving rod (643) is connected to the first gear (644), and the hoisting mechanism (65) is connected to the driving rod (643) through a transmission connection.

4. The highly adaptable and adjustable bridge steel box girder hoisting and positioning device according to claim 3 is characterized by: The clamping mechanism (63) comprises a screw rod (631) and a second motor (632), wherein the second motor (632) is fixedly connected to one end of the guide rail (61) away from the power mechanism (62), the screw rod (631) is rotatably connected to the inside of the guide rail (61), the threads at both ends of the screw rod (631) are screwed in opposite directions, both ends of the screw rod (631) are threadedly connected to a slider (633), a clamping arm (634) is fixedly installed at the bottom of the slider (633), and the clamping arm (634) is arranged in an L shape as a whole, the end of the screw rod (631) is connected to the output end of the second motor (632), and the clamping arm (634) is inserted into both sides of the steel box girder body (5).

5. The highly adaptable and adjustable bridge steel box girder hoisting and positioning device according to claim 4 is characterized in that: The hoisting mechanism (65) comprises a bearing assembly (651), the bearing assembly (651) is movably connected to two sides of the guide rail (61), a limiting assembly (652) is fixedly installed at the bottom of the bearing assembly (651), the top of the limiting assembly (652) is clamped with the guide rail (61), the top of the bearing assembly (651) is fixedly connected with a linkage assembly (653), the inner end of the linkage assembly (653) is sleeved on the outer surface of the driving rod (643), and a hoisting support assembly (654) is fixedly installed on the outer side of the linkage assembly (653).

6. The highly adaptable and adjustable bridge steel box girder hoisting and positioning device according to claim 5 is characterized by: The bearing assembly (651) comprises a slide groove (6511), wherein the slide groove (6511) is provided on both sides of the guide rail (61), wherein a movable block (6512) is slidably connected inside the slide groove (6511), and a mounting frame (6513) is fixedly mounted on the outer side of the movable block (6512), wherein the top of the mounting frame (6513) is connected to the linkage assembly (653), and the bottom of the mounting frame (6513) is connected to the limit assembly (652).

7. The highly adaptable and adjustable bridge steel box girder hoisting and positioning device according to claim 6 is characterized by: The linkage assembly (653) is linked to a base frame (6531), and the linkage base frame (6531) is fixedly connected to the top of the mounting frame (6513). The inner outer end of the linkage base frame (6531) is rotatably connected to a rotating shaft (6532). Both ends of the rotating shaft (6532) pass through the linkage base frame (6531). A second gear (6533) is fixedly connected to the middle of the outer surface of the rotating shaft (6532). The inner inner end of the linkage base frame (6531) is rotatably connected to the rotating shaft (6532). A sliding sleeve (6534) is provided, wherein the sliding sleeve (6534) is slidably connected to the outer surface of the driving rod (643), a gear ring (6535) is fixedly connected to the middle of the outer surface of the sliding sleeve (6534), the gear ring (6535) is meshingly connected to the second gear (6533), the internal cross-sectional shape of the sliding sleeve (6534) and the cross-sectional shape of the driving rod (643) are both set to be a regular hexagon, and the lifting support component (654) is fixedly installed on the outer end of the rotating shaft (6532).

8. The highly adaptable and adjustable bridge steel box girder hoisting and positioning device according to claim 7 is characterized in that: The hoisting support assembly (654) comprises a concave frame (6541), the concave frame (6541) is fixedly mounted on the outer end of the rotating shaft (6532), the concave frame (6541) is rotatably connected to the outer side of the linkage base frame (6531), a sleeve (6542) is fixedly mounted on the outer side of the concave frame (6541), a sliding rod (6543) is slidably connected inside the sleeve (6542), a hoisting hook plate (6544) is fixedly mounted on the outer end of the sliding rod (6543), and the hoisting hook plate (65 44) is hung on the front and rear ends of both sides of the steel box girder body (5), the outer end of the sleeve (6542) is threadedly connected to the limiting screw (6545), the outer side of the sliding rod (6543) is provided with limiting holes (6546) arranged linearly at equal intervals, the end of the limiting screw (6545) is inserted into the inside of the limiting hole (6546), the limiting screw (6545) is configured as a hand-tightening screw, and the cross-sectional shape of the sliding rod (6543) and the internal cross-sectional shape of the sleeve (6542) are both configured as convex shapes.

9. The highly adaptable and adjustable bridge steel box girder hoisting and positioning device according to claim 7 is characterized by: The limit assembly (652) comprises a base frame (6521) and a clamping hole (6522). The clamping holes (6522) are arranged linearly at equal intervals and are opened on both sides of the bottom of the guide rail (61). The base frame (6521) is fixedly connected to the bottom of the mounting frame (6513). The inside of the base frame (6521) is fixedly connected to a limit spring (6523). A circular plate (6524) is fixedly installed on the top of the limit spring (6523). A clamping pin (6525) is fixedly connected to the top of the circular plate (6524). The end of the clamping pin (6525) passes through the base frame (6521) and is inserted into the inside of the clamping hole (6522).

10. The highly adaptable and adjustable bridge steel box girder hoisting and positioning device according to claim 9, characterized in that: The bottom of the circular plate (6524) is fixedly connected to a connecting shaft (6526), ​​the bottom of the connecting shaft (6526) passes through the bottom frame (6521) and is fixedly connected to a bridge-type handrail (6527), the overall cross-sectional shape of the internal cavity of the guide rail (61) and the internal cavity of the slide groove (6511) are both set to be convex, and the side shapes of the slider (633) and the movable block (6512) are also set to be convex.

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