Prefabricated hollow slab girder double-crane hoisting auxiliary balancing device and operation method

Abstract

The invention discloses a prefabricated hollow slab girder double-crane hoisting auxiliary balancing device and an operation method, the auxiliary balancing device is used for limiting and wrapping the end part of a hollow slab girder, and the auxiliary balancing device comprises a crane framework, a bottom support mechanism and a clamping and stabilizing mechanism. The crane framework comprises a T-shaped frame, a lifting lug set and a pull rod. The clamping and stabilizing mechanism buffers and limits the two sides of the hollow slab beam and comprises clamping assemblies symmetrically arranged on the two sides of the hollow slab beam. The bottom supporting mechanism comprises a translation assembly, a rotating assembly and brackets, the translation assembly drives the two brackets to move so as to adapt to the width of the hollow slab beam, and the rotating assembly rotates the brackets to enable the brackets to rotate downwards so as to be inserted into the bottom of the hollow slab beam for lifting. According to the auxiliary balancing device, the end of the hollow slab beam is limited and wrapped through the pull rod, the bottom supporting mechanism and the clamping and stabilizing mechanism, the situation that the hollow slab beam deviates and rotates greatly due to stress is avoided, and therefore the hoisting stability of the hollow slab beam is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of hollow beam hoisting, and more specifically, relates to a prefabricated hollow slab beam double-machine hoisting auxiliary balancing device and an operating method. Background Art

[0002] Hollow beam is a prefabricated plate-shaped building component and is the main form of bridge superstructure today. With the development of infrastructure construction in my country, prestressed hollow slab beams have been widely used in urban bridges, high-grade highways and rural roads. Due to the advantages of simple structure, clear force, convenient construction, large span capacity and large-scale centralized prefabrication, prestressed hollow slab beams will continue to be the preferred structure for large-scale and wide-ranging small and medium-span bridges in my country.

[0003] When the existing prestressed hollow slab beam is in use, a hoist is needed to hoist the entire hollow beam. The hoist is a crane that is mainly used to erect prefabricated slab beams. After the hoist lifts the prefabricated slab beam, it is transported to the location and lowered, and the prefabricated slab beam can be erected at the specified location. However, when the current hoist is hoisting, the hook assembly is usually fixed at both ends of the hollow slab beam to lift it, which is prone to tilting, causing the hollow slab beam to shift during the hoisting process, posing certain safety hazards. Summary of the invention

[0004] In view of the problems that the hoisting of hollow slab beams by hoisting machines in the prior art is prone to tilting, deflection, and potential safety hazards, the present invention provides a prefabricated hollow slab beam double-machine hoisting auxiliary balancing device and an operating method to solve such problems.

[0005] In order to achieve the above-mentioned purposes, the present invention provides a prefabricated hollow slab beam dual-machine hoisting auxiliary balancing device, including a hoisting machine structure located above the end of the hollow slab beam, including a T-frame, and a lifting ear group and a pull rod respectively arranged at the top and bottom of the T-frame. The triangular structure point formed by the lifting ear group is connected to the hoisting machine to ensure that the rope length is different during hoisting and rising, so that there will be no deviation and overturning; the other end of the pull rod is buckled with the lifting ear at the top of the hollow slab beam; a clamping and stabilizing mechanism for buffering and limiting both sides of the end of the hollow slab beam, including a clamping assembly and a driving assembly; the clamping assembly includes a hollow slab beam and a driving assembly. A rubber plate in contact with the side of the plate beam end, an air bag arranged at the bottom of the rubber plate and spring damping arranged at the four corners of the rubber plate; the driving assembly drives the two sets of clamping assemblies to move together synchronously to clamp the two sides of the hollow plate beam end and buffer the vibration on the hollow plate beam; and a bottom supporting mechanism, which includes an upper seat plate fixedly arranged under the T-shaped frame, and a translation assembly, a rotation assembly and a bracket arranged at the bottom of the upper seat plate. According to the width of the hollow plate beam, the translation assembly drives the bracket to move to the corresponding point, and the rotation assembly drives the bracket to rotate downward until the bracket is inserted into the bottom of the hollow plate beam to lift it.

[0006] Furthermore, the T-shaped frame includes a cross bar, a longitudinal bar vertically fixed in the middle of the rear side of the cross bar, and a baffle fixed at both ends of the cross bar; the ear group includes a fixed ear and a sliding ear, the fixed ear is fixed at the top of the longitudinal bar, and the sliding ear is provided in two groups, which are symmetrically slidably arranged on the top of the cross bar.

[0007] Furthermore, sliding sleeves are provided at both ends of the crossbar, a sliding ear is fixedly provided on the top of the sliding sleeve, and a hanging ring is fixedly provided on the bottom, and the sliding ear and the hanging ring are on the same vertical line; the hanging ring is connected to one end of the pull rod.

[0008] Furthermore, two ends of the top of the crossbar are symmetrically provided with sliding grooves, and the sliding sleeve is provided with a T-shaped sliding block adapted to the sliding groove. The T-shaped sliding block slides along the sliding groove to prevent radial deviation of the sliding sleeve.

[0009] Furthermore, the translation assembly includes a driving gear, a rack, a slide and a slide rail; the driving gear is rotatably arranged at the bottom center of the upper seat plate, and is fixedly connected to the motor shaft of the driving motor to rotate forward and reverse under the drive of the driving motor; two groups of racks are arranged in parallel, which are respectively engaged with the two sides of the driving gear; the bottom of the slide is fixedly connected to the rack, and the top is slidably arranged on the slide rail; the slide rail is fixedly arranged at the bottom of the upper seat plate.

[0010] Furthermore, the rotating assembly is provided with two groups, which are respectively fixedly connected to the two groups of racks away from one end, and includes a mounting frame, a rotating frame and a driving electric cylinder; wherein the mounting frame is vertically fixedly connected to the rack; the rotating frame is hinged to the mounting frame; the driving electric cylinder is fixedly arranged on the mounting frame, and the end of its motor shaft is hinged to the top of the rotating frame.

[0011] Furthermore, the bracket is an L-shaped structure, the top of which is fixedly connected to the rotating frame, and includes a vertical plate, and a horizontal plate vertically fixedly connected to the bottom of the vertical plate; a plurality of sets of trapezoidal plates are arranged in parallel on the horizontal plate.

[0012] Furthermore, the driving assembly is installed on a fixed rear seat plate at the rear end of the T-frame, and includes a driving cylinder, a connecting plate, a guide rail, a chain, a clamping seat, a sprocket and a slider; the sprocket is provided with two groups and is rotatably arranged on the fixed rear seat plate, and the chain includes an upward chain and a downward chain, which are connected end to end and are surrounded by the outer sides of the two groups of sprockets to be closed and meshed with the sprockets; the guide rail is provided with two groups, which are symmetrically arranged on both sides of the chain, and multiple groups of sliders are slidably arranged on them; the connecting plate is provided with two groups, which are symmetrically arranged above the guide rails, and the bottom of the two groups of clamping seats is fixedly connected to the upward chain and the downward chain, respectively, and the top is fixedly connected to the two groups of connecting plates, respectively; the driving cylinder is connected to the connecting plate, and the connecting plate is driven by the piston to reciprocate, so that the two groups of connecting plates are synchronously moved closer or farther away.

[0013] Furthermore, the clamping assembly includes a side plate, a mounting plate, an airbag, a spring damper, a rubber plate and a rubber protrusion; the side plate is vertically fixed on the connecting plate and is driven by the connecting plate to move; the mounting plate is fixed on the side plate and is used to install other functional components; the rubber plate is arranged parallel to the mounting plate, and its center is connected to the mounting plate through the airbag, and its four corners are connected to the mounting plate through spring dampers; the rubber protrusions are provided in multiple groups on the top of the rubber plate.

[0014] According to another aspect of the present invention, there is also provided an operating method of a prefabricated hollow slab beam dual-machine hoisting auxiliary balancing device, comprising the following steps:

[0015] S100: Use two sets of hoisting machines to hoist the auxiliary balancing device to both ends of the hollow slab beam respectively, slide the sliding sleeve to adapt to the width of the hollow slab beam, and make the tie rod engage with the lifting lug on the top of the hollow slab beam;

[0016] S200: Drive the hoisting machine to drive the T-frame to initially lift the hollow slab beam, and through the triangular structure points, ensure that there will be no deviation and rollover due to uneven rope lengths during hoisting;

[0017] S300: According to the width of the hollow slab beam, when the driving cylinder drives a group of connecting plates to move, the clamping seat connected to the group of connecting plates drives the upward chain to move to the right, and under the rotation and engagement of the sprocket, the downward chain drives another group of clamping seats to move to the left synchronously, so that the two groups of clamping components are synchronously brought together to clamp the hollow slab beams of different widths;

[0018] S400: When the rubber plate of the clamping assembly contacts the hollow slab beam, the spring damping and airbag buffer and unload the vibration generated by the contact collision, and the displacement of the hollow slab beam is limited by the rubber plate, so that the hollow slab beam will not deviate and rotate significantly due to wind force and coordination problems of the hoisting machine during hoisting;

[0019] S500: The driving gear drives the meshing rack to move, so that the rotating assembly moves synchronously, so that the distance between the two sets of L-shaped brackets can be adjusted to adapt to hollow slab beams of different widths;

[0020] S600: drives the electric cylinder to rotate, drives the rotating frame to rotate through the motor shaft, rotates the bracket downward, inserts into the bottom of the hollow slab beam and lifts it to prevent the hollow slab beam from falling due to rope breakage during hoisting;

[0021] S700: After the hollow slab beam is hoisted to the placement position, the electric cylinder is driven to retract the piston rod, and the rotating frame drives the bracket to rotate and open outward, thereby releasing the support for the hollow slab beam to ensure that the hollow slab beam can be dropped without obstacles;

[0022] S800: The driving assembly of the clamping stabilizing mechanism pushes the clamping assembly to move horizontally to both sides, releases the operation on the hollow slab beam, removes the tie rod from the lifting lug, and completes the hoisting operation of the hollow slab beam;

[0023] S900: Drive the hoisting machine to lift the auxiliary balancing device to the next set of hollow slab beams for the next round of operations.

[0024] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0025] 1. The hoisting auxiliary balancing device of the present invention is provided with a hoisting machine structure, which can provide a triangular structure point hoisting point according to the width of the hollow slab beam, and is connected to the hoisting machine 1 with a hoisting rope, so that the hollow slab beam can be lifted steadily; the top of the hollow slab beam is connected and positioned by a pull rod, the bottom of the hollow slab beam is lifted by a bottom supporting mechanism, and the two sides of the hollow slab beam are limited and buffered by a clamping stabilization mechanism, so that the end of the hollow slab beam is limited and wrapped, thereby avoiding the situation where the hollow slab beam is subjected to a large-scale deviation and rotation due to the force, and greatly improving the stability of the hollow slab beam hoisting.

[0026] 2. The hoisting auxiliary balancing device of the present invention is achieved by adding two sets of balancing hoisting devices to the hoisting machine. After the two sets of pull rods are slid on the slide groove to adjust the distance, they are engaged with the lifting ears on the top of the hollow slab beam for hoisting. When the hollow slab beam is in the process of rising, the sliding ears on the top of the T-frame are used to fix the lifting ears and the two sets of pull rods, thereby forming a triangular structural point, which can stably connect the balancing hoisting device to the hoisting machine, so that the hollow slab beam will not be offset and overturned due to uneven rope lengths when hoisting and rising, thereby increasing the balance of the hollow slab beam hoisting.

[0027] 3. The hoisting auxiliary balancing device of the present invention can limit and buffer the head and tail ends of the hollow slab beam during hoisting through the clamping stabilization mechanism. When the hollow slab beam deviates during hoisting in the air, it will contact and collide with the rubber plate. The spring damping and airbag at the bottom of the rubber plate can buffer and unload the impact force generated by the collision, and the rubber plate can limit the displacement of the hollow slab beam. The hollow slab beam will not deviate and rotate significantly due to wind force and coordination problems of the hoisting machine during hoisting, thereby improving the hoisting efficiency.

[0028] 4. The lifting auxiliary balancing device of the present invention is provided with a bottom support mechanism, which drives the rack meshing with the driving gear to move, so that the rotating assembly is displaced synchronously, thereby adjusting the distance between the two groups of L-shaped brackets, so that the brackets can adapt to hollow slab beams of different specifications and lift them.

[0029] 5. The hoisting auxiliary balancing device of the present invention drives the two sets of driving electric cylinders located on the bottom supporting mechanism to operate, and drives the rotating frame and the bracket to rotate downward through the motor shaft, so that the bracket 54 can lift the hoisted hollow slab beam, which can prevent the hollow slab beam from falling due to rope breakage during hoisting, thereby increasing the safety during hoisting.

[0030] 6. The hoisting auxiliary balancing device of the present invention is provided with a clamping stabilizing mechanism. When a group of connecting plates are driven to move by a driving cylinder, the clamping seat connected to the group of connecting plates drives the upward chain to move to the right. Under the rotation and engagement of the sprocket, the downward chain drives the other group of clamping seats to move synchronously to the left, so that the two groups of clamping components are synchronously brought together to clamp hollow slab beams of different sizes, thereby increasing the stability of the hollow slab beams during hoisting and preventing the hollow slab beams from deflecting. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of a dual-machine hoisting auxiliary balancing device for a prefabricated hollow slab beam in an embodiment of the present invention;

[0032] Figure 2 It is a structural schematic diagram of the auxiliary balancing device and the hollow slab beam in the implementation of the present invention;

[0033] Figure 3 It is a structural schematic diagram of the auxiliary balancing device in the implementation of the present invention;

[0034] Figure 4 It is a structural schematic diagram of the crane structure in the implementation of the present invention;

[0035] Figure 5 It is a structural schematic diagram of the suspension rope in the implementation of the present invention;

[0036] Figure 6It is a structural schematic diagram of the bottom supporting mechanism in the implementation of the present invention;

[0037] Figure 7 It is a schematic diagram of the exploded structure of the bottom supporting mechanism in the implementation of the present invention;

[0038] Figure 8 It is a structural schematic diagram of a rotating assembly in the implementation of the present invention;

[0039] Fig. 9 It is a schematic diagram of the initial state of the bottom supporting mechanism in the implementation of the present invention;

[0040] Fig.10 It is a schematic diagram of the working state of the bottom supporting mechanism supporting the bottom of the hollow slab beam in the implementation of the present invention;

[0041] Fig.11 It is a structural schematic diagram of the clamping mechanism in the implementation of the present invention;

[0042] Fig.12 It is a front view of a driving assembly in the embodiment of the present invention;

[0043] Fig.13 A rear view of a drive assembly in the embodiment of the present invention;

[0044] Fig.14 It is a partial structural schematic diagram of a driving component in the implementation of the present invention;

[0045] Fig.15 It is a schematic diagram of the structure of the clamping assembly in the implementation of the present invention.

[0046] A rear view of a drive assembly in the embodiment of the present invention;

[0047] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0048] 1- Hoisting machine;

[0049] 2-suspension ropes, including: 201-main cable, 201-auxiliary cable;

[0050] 3- crane structure, including: 31- T-frame, 311- cross bar, 312- longitudinal bar, 313- reinforcing plate, 32- lifting lug group, 321- fixed lifting lug, 322- sliding lifting lug, 33- sliding shaft sleeve, 34- slide groove, 35- pull rod, 36- baffle;

[0051] 4-Fix the rear seat plate;

[0052] 5- bottom support mechanism, including: 51- upper seat plate, 52- translation assembly, 521- driving gear, 522- rack, 523- slide seat, 524- slide rail, 53- rotating assembly, 531- mounting frame, 532- rotating frame, 533- driving electric cylinder, 54- bracket, 55- trapezoidal plate;

[0053] 6- clamping stabilizing mechanism, including: 61- clamping assembly, 611- side plate, 612- mounting plate, 613- airbag, 614- spring damping, 615- rubber plate, 616- rubber protrusion, 62- driving assembly, 621- driving cylinder, 622- connecting plate, 623- guide rail, 624- chain, 625- card seat, 626- sprocket, 627- slider;

[0054] 7-Hollow slab beam, including: 701-Lifting lug. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0056] like Figure 1-15 As shown, the present invention provides a prefabricated hollow slab beam dual-machine hoisting auxiliary balancing device, the auxiliary balancing device is symmetrically provided with two groups at both ends of the hollow slab beam 7, respectively connected to the hoisting machine 1 through the hoisting rope 2, and includes a hoisting machine frame 3, a bottom supporting mechanism 5 and a clamping stabilization mechanism 6. The hoisting machine frame 3 includes a T-frame 31, a lifting lug group 32 and a tie rod 35. The lifting lug group 32 adjusts the lifting point according to the width of the hollow slab beam 7 to form a triangular structure point and cooperates with the hoisting rope 2 to lift, thereby increasing the balance of the hollow slab beam hoisting. The tie rod 35 hangs the hollow slab beam 7 on the bottom of the T-frame 31. The clamping and stabilizing mechanism 6 performs buffering and limiting on both sides of the hollow slab beam 7, and includes clamping components 61 symmetrically arranged on both sides of the hollow slab beam 7. The clamping component 61 includes a rubber plate 616 that contacts the side of the hollow slab beam 7, an air bag 613 and a spring damper 614 arranged at the bottom of the rubber plate 616. The impact force is absorbed by a variety of buffer components to avoid the hollow slab beam from deviating and rotating significantly. The bottom supporting mechanism 5 includes a translation component 52, a rotation component 53, and brackets 54 symmetrically arranged on both sides of the hollow slab beam 7. The translation component 52 drives the two groups of brackets 54 to move to adapt to the width of the hollow slab beam 7, and the rotation component 53 rotates the bracket 54 to make it rotate downward, so as to insert the hollow slab beam 7 for lifting. The auxiliary balancing device of the present invention is connected to the hoisting machine 1 through the triangular structural point formed by the crane frame 3, which ensures that the rope length will not be uneven and cause deviation and tipping during hoisting. The end of the hollow slab beam 7 is limited and wrapped by the pull rod 35, the bottom support mechanism 5 and the clamping and stabilizing mechanism 6, which avoids the hollow slab beam 7 from being subjected to force and causing large-scale deviation and rotation, thereby increasing the stability of the hollow slab beam hoisting.

[0057] like Figure 1-3 As shown, in the embodiment of the present invention, the auxiliary balancing device is provided with two groups, which wrap and buffer the ends of the hollow slab beam 7, and provide triangular structure point lifting points according to the width of the hollow slab beam 7, and are connected with the lifting machine 1 together with the lifting rope 2, so as to lift the hollow slab beam 7 smoothly.

[0058] like Figure 4 As shown, in the embodiment of the present invention, the crane structure 3 is arranged above the end of the hollow slab beam 7, and includes a T-shaped frame 31, a lifting ear group 32, a sliding sleeve 33, a sliding groove 34, a pull rod 35 and a baffle 36.

[0059] The T-shaped frame 31 includes a cross bar 311 and a longitudinal bar 312 vertically fixed to the middle of the rear side of the cross bar 311 . To enhance the structural strength of the T-shaped frame 31 , a reinforcing plate 312 is fixed between the cross bar 311 and the longitudinal bar 312 .

[0060] The lifting lug group 32 includes a fixed lifting lug 321 and a sliding lifting lug 322. The fixed lifting lug 321 is fixedly arranged on the top of the longitudinal rod 312, and the sliding lifting lug 322 is provided with two groups, which are symmetrically slidably arranged on the top of the cross bar 311. The fixed lifting lug 321 and the two groups of sliding lifting lugs 322 form a triangular structure point, which can be used in conjunction with the lifting rope 2 to carry out the lifting operation of the three-point lifting method, which can evenly distribute the weight of the hollow slab beam 7 to ensure the stability and safety of the lifting. Furthermore, the spacing between the two groups of sliding lifting lugs 322 can be adjusted according to the hollow slab beams 7 of different widths, so that the sliding lifting lug 322 and the hanging ring at the bottom of the T-frame 31 are on the same vertical line, so as to avoid the central moment of the two from being amplified through the force arm when there is a deviation, and the shaking and instability during the lifting process is avoided.

[0061] The sliding sleeve 33 is slidably mounted on both ends of the cross bar 311, a sliding lug 322 is fixedly mounted on the top, and a hanging ring is fixedly mounted on the bottom. The sliding lug 322 and the hanging ring are located on the same vertical line.

[0062] In order to prevent radial deviation of the sliding sleeve 33 when it slides, sliding grooves 34 are symmetrically opened at both ends of the top of the cross bar 311, and the sliding sleeve 33 is provided with a T-shaped sliding block adapted to the sliding groove 34. The T-shaped sliding block slides along the sliding groove 34 to prevent radial deviation of the sliding sleeve 33, thereby preventing radial deviation of the sliding sleeve 33 when the T-shaped frame 31 is shaken by force, thereby ensuring the stable progress of the lifting work.

[0063] In order to prevent the sliding sleeve 33 from falling off from the two ends of the cross bar 311, baffles 36 are fixedly provided at the two ends of the cross bar 311 to block and limit the position.

[0064] The pull rods 35 are provided with two groups at each end of the hollow slab beam 7, which are used to connect the T-frame 31 and the hollow slab beam 7. The two ends are respectively connected to the hanging ring and the lifting ears 701 at the top of the hollow slab beam 7. In the initial stage of lifting, the two ends of the hollow slab beam 7 are lifted in conjunction with the T-frame 31.

[0065] like Figure 5 As shown, the hoisting rope 2 includes a main cable 201 and an auxiliary cable 202. The bottom of the main cable 201 is connected to the hoisting machine 1, and the bottom is connected to the auxiliary cable 202. The auxiliary cable 202 has three groups, which are respectively connected to the fixed lifting lug 321 and the sliding lifting lug 322.

[0066] In the embodiment of the present invention, when the crane structure 3 performs the initial lifting operation, the sliding sleeve 33 is synchronously slid until it matches the width of the hollow slab beam 7, so that the bottom of the two sets of pull rods 35 can be connected to the lifting ear 701; the three sets of auxiliary cables 202 are respectively connected to the fixed lifting ear 321 and the sliding lifting ear 322, and are adjusted to the same length to avoid the hollow slab beam 7 from deviating and tipping over due to different rope lengths during lifting; after the connection of the crane structure 3 is completed, the hoisting machine 1 can be driven to hoist the lifting rope 2, so that with the cooperation of the crane structure 3, the two ends of the hollow slab beam 7 can be stably lifted.

[0067] like Figure 6-10 As shown, in the embodiment of the present invention, the bottom supporting mechanism 5 is used to lift the hollow slab beam 7 at the bottom, which can prevent the hollow slab beam from falling due to rope breakage during lifting. It includes an upper seat plate 51, a translation assembly 52, a rotation assembly 53, a bracket 54 and a trapezoidal plate 55.

[0068] The upper seat plate 51 is disposed below the T-shaped frame 31 , and both ends thereof are fixedly connected to the inner side of the baffle 36 , and serves as a load-bearing member to fix and connect other components.

[0069] The translation assembly 52 drives the bracket 54 to move to the corresponding point according to the width of the hollow slab beam 7 to perform lifting work, and includes a driving gear 521, a rack 522, a slide 523 and a slide rail 524. The driving gear 521 is rotatably arranged at the bottom center of the upper seat plate 51, and is fixedly connected to the motor shaft of the driving motor. Under the drive of the driving motor, it can be reversed; the rack 522 is arranged in two groups in parallel, and meshes with the two sides of the driving gear 521 respectively; the bottom of the slide 523 is fixedly connected to the rack 522, and the top is slidably arranged on the slide rail 524; the slide rail 524 is fixedly arranged at the bottom of the upper seat plate 51.

[0070] The rotating assembly 53 is provided with two groups, which are respectively fixedly connected to the two groups of racks 522 away from one end, and includes a mounting frame 531, a rotating frame 532 and a driving electric cylinder 533; wherein, the mounting frame 531 is vertically fixedly connected to the rack 522; the rotating frame 532 is hinged to the mounting frame 531; the driving electric cylinder 533 is fixedly arranged on the mounting frame 531, and the end of its motor shaft is hinged to the top of the rotating frame 532.

[0071] The bracket 54 is an L-shaped structure, the top of which is fixedly connected to the rotating frame 532, and includes a vertical plate and a horizontal plate vertically fixedly connected to the bottom of the vertical plate. The horizontal plate is inserted into the bottom of the hollow slab beam 7 to lift it.

[0072] Furthermore, a plurality of sets of trapezoidal plates 55 are arranged in parallel on the transverse plate of the bracket 54 , and the trapezoidal plates 55 can increase the structural strength and supporting force of the L-shaped bracket 54 .

[0073] In the embodiment of the present invention, when the bottom supporting mechanism 5 performs a lifting operation, according to the width of the hollow slab beam 7, the driving motor drives the driving gear 521 to rotate, so that the two sets of racks 522 meshing on both sides thereof move toward each other synchronously, until the two sets of rotating components 53 fixedly connected to the racks 522 are synchronously displaced to the corresponding points; the driving electric cylinder 533 extends the motor shaft to drive the rotating frame 532 to rotate downward until the bracket 54 is inserted into the bottom of the hollow slab beam 7 to lift it.

[0074] like Figure 11-15 As shown, in the embodiment of the present invention, the clamping and stabilizing mechanism 6 performs position limiting and buffering on the end of the hollow slab beam 7, and includes a clamping assembly 62 and a driving assembly 62. The clamping assembly 62 is provided with two groups, which are symmetrically arranged on both sides of the end of the hollow slab beam 7. The driving assembly 62 synchronously drives the clamping assembly 62 to move toward both sides of the end of the hollow slab beam 7 to clamp both sides of the end of the hollow slab beam 7.

[0075] The driving assembly 62 is fixedly arranged on the front side of the fixed rear seat plate 4, and includes a driving cylinder 621, a connecting plate 622, a guide rail 623, a chain 624, a clamping seat 625, a sprocket 626 and a slider 627. The sprocket 626 is provided with two groups and is rotatably arranged on the fixed rear seat plate 4. The chain 624 includes an upward chain and a downward chain, which are connected end to end and are arranged around the outer sides of the two groups of sprockets 626 for sealing, and mesh with the sprocket 626. The chain 624 can be driven to move by the rotation of the sprocket 626. The guide rail 623 is provided with two groups, which are symmetrically arranged on both sides of the chain 624, and multiple groups of sliders 627 are slidably arranged on them. The connecting plate 622 is provided with two groups, which are symmetrically arranged above the guide rail 623, and the bottom thereof is fixedly connected to the slider 627, and is driven by the slider 627 to slide along the guide rail 623 in the opposite or opposite directions. The clamping seat 625 is provided with two groups, the bottoms of the two groups of clamping seats 625 are respectively fixedly connected to the upward chain and the downward chain, and the tops are respectively fixedly connected to the two groups of connecting plates 622. The driving cylinder 621 is connected to the connecting plate 622, and the connecting plate 622 is driven to reciprocate by the piston, so that the two groups of connecting plates 622 are synchronously moved closer or farther away.

[0076] The clamping assembly 62 includes a side plate 611, a mounting plate 612, an airbag 613, a spring damper 614, a rubber plate 615 and a rubber protrusion 616. The side plate 611 is vertically fixed on the connecting plate 622 and is driven by the connecting plate 622 to move. The mounting plate 612 is fixed on the side plate 611 and is used to install other functional components. The rubber plate 615 is arranged in parallel with the mounting plate 612, and is connected to the mounting plate 612 at the center through the airbag 613, and is connected to the mounting plate 612 at the four corners through the spring damper 614. The rubber protrusion 616 is provided in multiple groups on the top of the rubber plate 615. By providing multiple buffer components such as the airbag 613, the spring damper 614, the rubber plate 615 and the rubber protrusion 616, the force can be buffered and unloaded when the hollow plate beam 7 contacts and collides with the rubber plate 615, thereby avoiding the situation where the hollow plate beam 7 is greatly deflected and rotated due to the impact.

[0077] In the embodiment of the present invention, when the clamping stabilization mechanism 6 performs a clamping operation, the driving cylinder 621 extends to drive a group of connecting plates 622 to move, and the clamping seat 625 connected to the group of connecting plates 622 drives the upward chain to move to the right. Under the rotation and engagement of the sprocket 626, the downward chain drives another group of clamping seats 625 to move synchronously to the left, so that the two groups of clamping components 62 are synchronously brought together to clamp the hollow plate beam 7.

[0078] The hoisting auxiliary balancing device of the present invention is provided with a hoist frame 3, which can provide a triangular structure point hoisting point according to the width of the hollow slab beam 7, and is connected to the hoisting machine 1 with a hoisting rope 2, so that the hollow slab beam 7 can be lifted stably; the top of the hollow slab beam 7 is connected and positioned by a pull rod 35, the bottom of the hollow slab beam 7 is lifted by a bottom supporting mechanism 5, and the two sides of the hollow slab beam 7 are limited and buffered by a clamping stabilizing mechanism 6, so that the end of the hollow slab beam 7 is limited and wrapped, thereby avoiding the situation where the hollow slab beam 7 is subjected to large-scale displacement and rotation due to force, and greatly improving the stability of the hollow slab beam hoisting.

[0079] The hoisting auxiliary balancing device of the present invention adds two sets of balancing hoisting devices to the hoisting machine 1, and uses two sets of pull rods 35 to slide on the slide groove 34 to adjust the distance and then engage with the lifting ear 701 on the top of the hollow slab beam 7 for hoisting. When the hollow slab beam 7 is in the process of rising, the triangular structural points formed by the sliding ear 322 on the top of the T-frame 31, the fixed ear 321 and the two sets of pull rods 35 can stably connect the balancing hoisting device with the hoisting machine 1, so that the hollow slab beam 7 will not be offset and overturned due to uneven rope lengths during hoisting, thereby increasing the balance of the hollow slab beam hoisting.

[0080] The hoisting auxiliary balancing device of the present invention can limit and buffer the head and tail ends of the hollow slab beam during hoisting through the clamping stabilizing mechanism 6. When the hollow slab beam 7 is deflected during hoisting in the air, it will contact and collide with the rubber plate 615. The spring damping 614 and the airbag 613 on the bottom side of the rubber plate 615 can buffer and unload the impact force generated by the collision, and the rubber plate 615 can limit the displacement of the hollow slab beam 7. The hollow slab beam will not be deflected or rotated significantly due to wind force and coordination problems of the hoisting machine during hoisting, thereby improving the hoisting efficiency.

[0081] The lifting auxiliary balancing device of the present invention is provided with a base support mechanism 5, and uses the driving gear 521 to drive the rack 522 meshing therewith to move, so that the rotating component 53 is displaced synchronously, thereby being able to adjust the distance between the two groups of L-shaped brackets 54, so that the brackets 54 can adapt to hollow slab beams 7 of different specifications and lift them.

[0082] The hoisting auxiliary balancing device of the present invention drives the two sets of driving electric cylinders 533 located on the bottom supporting mechanism 5 to operate, and drives the rotating frame 532 and the bracket 54 to rotate downward through the motor shaft, so that the bracket 54 can lift the hoisted hollow slab beam 7, which can prevent the hollow slab beam 7 from falling due to rope breakage during hoisting, thereby increasing the safety during hoisting.

[0083] The hoisting auxiliary balancing device of the present invention is provided with a clamping stabilizing mechanism 6. When a group of connecting plates 622 are driven to move by a driving cylinder 621, the clamping seat 625 connected to the group of connecting plates 622 drives the upward chain to move to the right. Under the rotation and engagement of the sprocket 626, the downward chain drives the other group of clamping seats 625 to move synchronously to the left, so that the two groups of clamping components 62 are synchronously brought together to clamp hollow slab beams of different sizes, thereby increasing the stability of the hollow slab beams during hoisting and preventing the hollow slab beams from deflecting.

[0084] The embodiment of the present invention also provides an operation method of a prefabricated hollow slab beam double-machine hoisting auxiliary balancing device, comprising the following steps:

[0085] S100: hoisting the auxiliary balancing device to both ends of the hollow slab beam 7 by two sets of hoisting machines 1, sliding the sliding sleeve 33 to adapt to the width of the hollow slab beam 7, so that the pull rod 35 is buckled with the lifting ear 701 at the top of the hollow slab beam 7;

[0086] S200: driving the hoisting machine 1 to drive the T-frame 31 to initially lift the hollow slab beam 7, and through the triangular structure point position, ensuring that the rope length is different and there is no deviation and overturning during the hoisting and rising;

[0087] S300: According to the width of the hollow slab beam 7, when the driving cylinder 621 drives a group of connecting plates 622 to move, the clamping seat 625 connected to the group of connecting plates 622 drives the upward chain to move to the right, and under the rotation and engagement of the sprocket 626, the downward chain drives another group of clamping seats 625 to move to the left synchronously, so that the two groups of clamping components 62 are synchronously brought together to clamp the hollow slab beams 7 of different widths;

[0088] S400: When the rubber plate 615 of the clamping assembly 62 contacts the hollow slab beam 7, the spring damper 614 and the airbag 613 buffer and unload the vibration generated by the contact collision, and the displacement of the hollow slab beam 7 is limited by the rubber plate 615, so that the hollow slab beam 7 will not deviate and rotate significantly due to wind force and coordination problems of the hoisting machine during hoisting;

[0089] S500: The driving gear 521 drives the meshing rack 522 to move, so that the rotating assembly 53 is displaced synchronously, so that the distance between the two groups of L-shaped brackets 54 can be adjusted to adapt to the hollow plate beams 7 of different widths;

[0090] S600: driving the electric cylinder 533 to operate, driving the rotating frame 532 to rotate through the motor shaft, so that the bracket 54 rotates downward, inserts into the bottom of the hollow slab beam 7 and lifts it, so as to prevent the hollow slab beam 7 from falling due to rope breakage during hoisting;

[0091] S700: After the hollow slab beam 7 is hoisted to the placement position, the electric cylinder 533 is driven to retract the piston rod, and the rotating frame 532 drives the bracket 54 to rotate and open outward, thereby releasing the support for the hollow slab beam 7, ensuring that the hollow slab beam 7 can be dropped without obstacles;

[0092] S800: The driving assembly 62 of the clamping stabilizing mechanism 6 pushes the clamping assembly 61 to move horizontally to both sides, releases the operation on the hollow slab beam 7, removes the pull rod 35 from the lifting lug 701, and completes the lifting operation of the hollow slab beam 7;

[0093] S900: Drive the hoisting machine 1 to lift the hoisting auxiliary balancing device to the next group of hollow slab beams 7 to carry out the next round of operations.

[0094] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A prefabricated hollow slab beam dual-machine hoisting auxiliary balancing device, characterized in that: include: The crane structure (3) located above the end of the hollow slab beam (7) comprises a T-shaped frame (31), and a lifting lug group (32) and a pull rod (35) respectively arranged at the top and bottom of the T-shaped frame (31); the triangular structure point formed by the lifting lug group (32) is connected to the crane (1), thereby ensuring that the crane will not deviate and tip over due to different rope lengths during lifting; the other end of the pull rod (35) is engaged with the lifting lug (701) at the top of the hollow slab beam (7); A clamping stabilizing mechanism (6) for buffering and limiting the two sides of the end of the hollow slab beam (7) comprises a clamping assembly (62) and a driving assembly (62); the clamping assembly (62) comprises a rubber plate (61) in contact with the side edge of the end of the hollow slab beam (7), an air bag (613) arranged at the bottom of the rubber plate (6), and spring damping (614) arranged at the four corners of the rubber plate (6); the driving assembly (62) drives the two groups of clamping assemblies (62) to move together synchronously, clamping the two sides of the end of the hollow slab beam (7), and buffering and unloading the vibration on the hollow slab beam (7); And a bottom supporting mechanism (5), which comprises an upper seat plate (51) fixedly arranged below the T-shaped frame (31), and a translation component (52), a rotation component (53) and a bracket (54) arranged at the bottom of the upper seat plate (51), wherein according to the width of the hollow slab beam (7), the translation component (52) drives the bracket (54) to move to a corresponding point, and the rotation component (53) drives the bracket (54) to rotate downward until the bracket (54) is inserted into the bottom of the hollow slab beam (7) to support it.

2. The prefabricated hollow slab beam dual-machine hoisting auxiliary balancing device according to claim 1 is characterized in that: The T-shaped frame (31) comprises a cross bar (311), a longitudinal bar (312) vertically fixed to the middle of the rear side of the cross bar (311), and baffles (36) fixed to both ends of the cross bar (311); the eyelet group (32) comprises a fixed eyelet (321) and a sliding eyelet (322), wherein the fixed eyelet (321) is fixed to the top of the longitudinal bar (312), and the sliding eyelet (322) is provided with two groups, which are symmetrically slidably arranged on the top of the cross bar (311).

3. The prefabricated hollow slab beam dual-machine hoisting auxiliary balancing device according to claim 2 is characterized in that: The two ends of the cross bar (311) are respectively slidably sleeved with a sliding sleeve (33), the top of the sliding sleeve (33) is fixedly provided with a sliding ear (322), and the bottom is fixedly provided with a hanging ring, the sliding ear (322) and the hanging ring are located on the same vertical line; the hanging ring is connected to one end of the pull rod (35).

4. The dual-machine hoisting auxiliary balancing device for prefabricated hollow slab beams according to claim 3 is characterized in that: The top two ends of the cross bar (311) are symmetrically provided with sliding grooves (34), and the sliding sleeve (33) is provided with a T-shaped sliding block adapted to the sliding groove (34). The T-shaped sliding block slides along the sliding groove (34) in a limited position, thereby preventing the sliding sleeve (33) from sliding in a radial direction.

5. A prefabricated hollow slab beam dual-machine hoisting auxiliary balancing device according to any one of claims 1 to 4, characterized in that: The translation assembly (52) comprises a driving gear (521), a rack (522), a slide seat (523) and a slide rail (524); the driving gear (521) is rotatably arranged at the bottom center of the upper seat plate (51), and is fixedly connected to the motor shaft of the driving motor, and is driven by the driving motor to rotate forward and reverse; two groups of racks (522) are arranged in parallel, and are respectively meshed with two sides of the driving gear (521); the bottom of the slide seat (523) is fixedly connected to the rack (522), and the top is slidably arranged on the slide rail (524); the slide rail (524) is fixedly arranged at the bottom of the upper seat plate (51).

6. The prefabricated hollow slab beam dual-machine hoisting auxiliary balancing device according to claim 5 is characterized in that: The rotating assembly (53) is provided with two groups, which are respectively fixedly connected to the two groups of racks (522) at one end away from each other, and comprises a mounting frame (531), a rotating frame (532) and a driving electric cylinder (533); wherein the mounting frame (531) is vertically fixedly connected to the racks (522); the rotating frame (532) is hinged to the mounting frame (531); the driving electric cylinder (533) is fixedly arranged on the mounting frame (531), and the end of the motor shaft thereof is hinged to the top of the rotating frame (532).

7. The prefabricated hollow slab beam dual-machine hoisting auxiliary balancing device according to claim 6 is characterized in that: The bracket (54) is an L-shaped structure, the top of which is fixedly connected to the rotating frame (532), and comprises a vertical plate and a horizontal plate vertically fixedly connected to the bottom of the vertical plate; a plurality of sets of trapezoidal plates (55) are arranged in parallel on the horizontal plate.

8. A prefabricated hollow slab beam dual-machine hoisting auxiliary balancing device according to any one of claims 1-4, characterized in that: The driving assembly (62) is mounted on the fixed rear seat plate (4) at the rear end of the T-shaped frame (31), and comprises a driving cylinder (621), a connecting plate (622), a guide rail (623), a chain (624), a clamping seat (625), a sprocket (626) and a slider (627); the sprocket (626) is provided with two groups and is rotatably provided on the fixed rear seat plate (4); the chain (624) comprises an upward chain and a downward chain, which are connected end to end and are arranged around the outer sides of the two groups of sprockets (626) to be closed and meshed with the sprockets (626); the guide rail (623) is provided with two groups, which are symmetrically provided on both sides of the chain (624), and the guide rail (623) is provided with two groups. The upper slide is provided with a plurality of groups of sliders (627); the connecting plate (622) is provided with two groups, which are symmetrically arranged above the guide rail (623), and the bottoms of the connecting plates (622) are fixedly connected with the sliders (627), and driven by the sliders (627) to slide in the opposite direction or in the opposite direction along the guide rail (623); the clamping seat (625) is provided with two groups, and the bottoms of the two groups of clamping seats (625) are respectively fixedly connected with the upward chain and the downward chain, and the tops are respectively fixedly connected with the two groups of connecting plates (622); the driving cylinder (621) is connected with the connecting plate (622), and the connecting plate (622) is driven to reciprocate by the piston, so that the two groups of connecting plates (622) are synchronously moved closer or farther away.

9. The prefabricated hollow slab beam dual-machine hoisting auxiliary balancing device according to claim 8, characterized in that: The clamping assembly (62) comprises a side plate (611), a mounting plate (612), an airbag (613), a spring damper (614), a rubber plate (615) and a rubber protrusion (616); the side plate (611) is vertically fixed on the connecting plate (622) and is driven by the connecting plate (622) to move; the mounting plate (612) is fixed on the side plate (611) and is used to install other functional components; the rubber plate (615) is arranged parallel to the mounting plate (612), and is connected to the mounting plate (612) at its center through the airbag (613), and is connected to the mounting plate (612) at its four corners through the spring damper (614); and a plurality of rubber protrusions (616) are arranged on the top of the rubber plate (615).

10. An operating method of a dual-machine hoisting auxiliary balancing device for prefabricated hollow slab beams, characterized in that: The steps include: S100: Using two sets of hoisting machines (1), hoist the auxiliary balancing device to the two ends of the hollow slab beam (7), slide the sliding sleeve (33) to adapt to the width of the hollow slab beam (7), and make the pull rod (35) engage with the lifting ear (701) at the top of the hollow slab beam (7); S200: driving the hoisting machine (1) to drive the T-frame (31) to initially lift the hollow slab beam (7), and ensuring that the ropes are not uneven in length and thus do not deviate and tip over during the lifting process through the triangular structure points; S300: When the driving cylinder (621) drives a group of connecting plates (622) to move according to the width of the hollow slab beam (7), the clamping seat (625) connected to the group of connecting plates (622) drives the upward chain to move to the right, and under the rotation and engagement of the sprocket (626), the downward chain drives another group of clamping seats (625) to move to the left synchronously, so that the two groups of clamping assemblies (62) are synchronously brought together to clamp the hollow slab beams (7) of different widths; S400: When the rubber plate (615) of the clamping assembly (62) contacts the hollow slab beam (7), the spring damper (614) and the airbag (613) buffer and unload the vibration generated by the contact collision, and the displacement of the hollow slab beam (7) is limited by the rubber plate (615), so that the hollow slab beam (7) will not deviate and rotate significantly due to wind force and coordination problems of the hoisting machine during hoisting; S500: The driving gear (521) drives the meshing rack (522) to move, so that the rotating assembly (53) is displaced synchronously, thereby being able to adjust the distance between the two groups of L-shaped brackets (54) to adapt to hollow slab beams (7) of different widths; S600: driving the electric cylinder (533) to operate, driving the rotating frame (532) to rotate through the motor shaft, so that the bracket (54) rotates downward, inserts into the bottom of the hollow slab beam (7) and lifts it, so as to prevent the hollow slab beam (7) from falling due to rope breakage during lifting; S700: After the hollow slab beam (7) is hoisted to the placement position, the electric cylinder (533) is driven to retract the piston rod, and the rotating frame (532) drives the bracket (54) to rotate and open outward, thereby releasing the support for the hollow slab beam (7) to ensure that the hollow slab beam (7) can be dropped without obstacles; S800: The driving assembly (62) of the clamping stabilizing mechanism (6) pushes the clamping assembly (61) to move horizontally to both sides, releases the operation on the hollow slab beam (7), removes the pull rod (35) from the lifting lug (701), and completes the lifting operation of the hollow slab beam (7); S900: driving the hoisting machine (1) to hoist the auxiliary balancing device to the next set of hollow slab beams (7) to carry out the next round of operations.

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