A mobile hoisting device for prefabricated components of assembled bridge decks

Abstract

The present invention relates to the technical field of lifting equipment, and specifically discloses a mobile lifting equipment for prefabricated components of assembled bridge decks, comprising a frame, a lifting drive unit arranged on the frame, and a bearing unit for bearing the prefabricated components. The lifting drive unit comprises a driving assembly and a positioning assembly for positioning the driving assembly. A self-centering lifting unit and a locking reinforcement unit are provided at the bottom of the driving assembly. The self-centering lifting unit comprises two lifting frames that are symmetrical on the left and right. By utilizing the twistable and deformable characteristics of the steel wire rope of the electric hoist, as the centering support plate squeezes the inner wall of the prefabricated component, the steel wire rope twists, and the lifting frame is subjected to a reaction force from the prefabricated component, and will automatically adjust to a position perpendicular to the prefabricated component, thereby adjusting the lifting and fixing assembly to a state facing the outer wall of the prefabricated component, thereby facilitating the fixed lifting of the prefabricated component.

Description

Technical Field

[0001] The present invention relates to the technical field of hoisting equipment, and more particularly, to a mobile hoisting device for prefabricated components of assembled bridge decks. Background Art

[0002] Prefabricated bridge decks are a modern bridge structure characterized by the fact that all deck components are prefabricated in a factory and then transported to the construction site for assembly. Prefabricated cable troughs are part of the prefabricated bridge deck structure, used to install and protect cables. These troughs typically feature a "mountain"-shaped cross-section to accommodate separate high-voltage and low-voltage cables, while providing ample space between the deck walls and facilitating maintenance and inspection.

[0003] A Chinese invention patent with publication number CN118065249A discloses an installation device and method for prefabricated components of an assembled bridge deck system. The device includes a fixed portal and a movable portal. The fixed portal includes an outer column top crossbeam, and the movable portal includes a folding column top crossbeam. The outer column top crossbeam is connected to the folding column top crossbeam. The invention combines the setting of multiple laser sensors to reduce the difficulty of aligning the prefabricated components and improve the installation positioning accuracy.

[0004] However, the above design still has shortcomings:

[0005] When the prefabricated component is put into position under the top crossbeam of the folding column by the component transfer vehicle, it is not completely perpendicular to the hanger, but there will be a certain small offset. The first telescopic frame and the second telescopic frame are not facing the prefabricated component, which makes it impossible for the pin shaft to be smoothly inserted into the lifting hole. Therefore, it is necessary to adjust the position angle of the fixed door frame or the angle of the component transfer vehicle to make the first telescopic frame and the second telescopic frame face the prefabricated component. Before adjusting the angle of the rack or the component transfer vehicle, it is necessary to accurately measure the offset of the prefabricated component and calculate the angle that needs to be adjusted, which affects the lifting efficiency. In addition, the adjustment process of the rack or the component transfer vehicle angle needs to be observed while adjusting. This process may be repeated many times, resulting in a long time, which further affects the lifting efficiency. Summary of the Invention

[0006] The present invention provides a mobile hoisting device for prefabricated components of assembled bridge decks, which solves the technical problem in related technologies that prefabricated components are not completely perpendicular to the hanger when they are placed under the top cross beam of the folding column by a component transfer vehicle, thereby making it difficult to insert the pin shaft into the hoisting hole.

[0007] The present invention provides a mobile hoisting device for prefabricated components of an assembled bridge deck, comprising a frame, a hoisting drive unit arranged on the frame, and a bearing unit for bearing the prefabricated components. The hoisting drive unit comprises a driving assembly and a positioning assembly for positioning the driving assembly. A self-centering hoisting unit and a locking reinforcement unit are arranged at the bottom of the driving assembly. The self-centering hoisting unit comprises two left-right symmetrical hoisting frames, two hoisting fixing assemblies, two self-centering hole alignment assemblies, and two control assemblies for controlling the corresponding self-centering hole alignment assemblies.

[0008] The self-centering hole assembly includes a U-shaped frame fixedly installed at the bottom of the hanging frame through a fixing plate and two L-shaped rods slidably connected to the top of the U-shaped frame. A centering support plate is fixedly installed on the side of the L-shaped rod away from the U-shaped frame. The driving assembly includes a number of electric hoists distributed in a square and a hanging plate fixedly installed on the electric hoist. The left and right hanging frames are respectively fixedly installed at the bottom of the corresponding two hanging plates.

[0009] The control component controls the two L-shaped rods to move away from each other, driving the two centering plates to move away from each other, so that the four centering plates can hold the prefabricated components tightly. When the prefabricated components are offset, the centering plates are tightened to twist the electric hoist wire rope, so that the centering plates are close to and parallel to the prefabricated components.

[0010] Furthermore, the locking reinforcement unit includes two pairs of hinged seats fixedly installed on the side close to the two lifting frames and locking reinforcement rods hinged on the hinged seats. The locking reinforcement rods are provided with locking grooves. The four locking reinforcement rods are distributed in a square shape and are alternately arranged up and down. The four locking reinforcement rods are locked by locking rods and locking grooves during lifting.

[0011] Furthermore, the lifting and fixing assembly includes a bidirectional screw fixedly installed between the front and rear inner walls of the lifting frame and two sliding plates threadedly connected to the outside of the bidirectional screw and symmetrical front and back. Two sliding grooves are opened on the left and right inner walls of the lifting frame, and the sliding plates are slidably connected in the corresponding two sliding grooves.

[0012] Furthermore, a slide rail is fixedly installed at the bottom of the sliding plate, and an electric slider is slidably connected to the slide rail. Several lifting holes are provided on the front and rear sides of the prefabricated component. A hanging rod is fixedly installed at the bottom of the electric slider, and a socket corresponding to the lifting hole is provided on the hanging rod.

[0013] Furthermore, the self-centering hole assembly also includes two limit plates fixedly mounted on the bottom of the U-shaped frame and a limit rod fixedly mounted on the side of the centering support plate close to the U-shaped frame and sliding through the limit plates. The control assembly includes a control motor fixedly mounted on the bottom of the U-shaped frame and the output end sliding through the U-shaped frame and a drive gear fixedly mounted on the top of the output shaft of the control motor. A number of teeth meshing with the drive gear are provided on the side close to each other of the two L-shaped rods.

[0014] Furthermore, the load-bearing unit includes two pairs of bottom guide rails fixedly installed on the top of the base frame and symmetrical front and back, two electric sliders 2 are slidably connected to the top of the same pair of bottom guide rails, and the tops of the two electric sliders 2 corresponding front and back on the two pairs of bottom guide rails are jointly installed with load-bearing beams, and the two load-bearing beams are used to carry prefabricated components when the frame moves.

[0015] Furthermore, the frame includes a base frame and two H-shaped gantries fixedly installed on the top of the base frame and symmetrically arranged on the left and right. The two H-shaped gantries are connected by a number of connecting beams, and cross beams are fixedly installed on the top of both H-shaped gantries.

[0016] Furthermore, the driving assembly also includes a top guide rail fixedly installed on the top of the beam and a traveling crane carriage slidably connected to the outside of the top guide rail. Two I-beams are commonly installed on the top of the two traveling crane carriages, and the electric hoist is slidably connected to the corresponding I-beams.

[0017] Furthermore, an extension frame is fixedly installed at the bottom of the crossbeam, an extended hydraulic support leg is fixedly installed at the bottom of the extension frame, two left-right symmetrical electric steering wheels and four integrated hydraulic support legs distributed in a square are fixedly installed on the base frame, and a hydraulic station and an integrated diesel generator for powering the equipment are fixedly installed on the right side of the base frame.

[0018] Furthermore, the positioning assembly includes a positioning pin driving cylinder fixedly installed on the side of the traveling crane away from the electric hoist, and a positioning pin fixedly installed on the output end, and two positioning plates with positioning holes and cooperating with the positioning pins are fixedly installed on the side of the beam away from the electric hoist.

[0019] The beneficial effects of the present invention are:

[0020] 1. By utilizing the twisting and deforming characteristics of the electric hoist's wire rope, as the centering support plate squeezes the inner wall of the prefabricated component, the wire rope twists, and the lifting frame receives the reaction force from the prefabricated component and automatically adjusts to a position perpendicular to the prefabricated component, thereby adjusting the lifting and fixing components to a state facing the outer wall of the prefabricated component, thereby facilitating the fixed lifting of the prefabricated component.

[0021] 2. By dropping the prefabricated components on the top of the load-bearing beam after lifting, the prefabricated components are prevented from being in a lifted state all the time during the movement, which causes the prefabricated components to shake or tilt due to external forces such as vibration, making it necessary to frequently correct the inclination during subsequent installation, thereby increasing the difficulty of installation.

[0022] 3. By rotating the locking reinforcement rods, they are brought close to each other and staggered, and through the insertion of the locking rods, a more stable frame structure is formed. This not only enhances the strength of the lifting frame itself, but also further consolidates the connection between the left and right lifting frames. After locking, the lifting frame can better withstand the force generated during the lifting process, thereby ensuring the safety and stability of the lifting operation.

[0023] 4. The positioning pin is driven by the output end of the oil cylinder to push the positioning pin into the corresponding positioning hole, thereby forming a stable gantry crane structure, greatly improving the stability of the crane trolley, and preventing the crane trolley from moving during the process of lifting prefabricated components. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure of the base frame, cross beam, connecting frame, extension frame and extended hydraulic support legs of the present invention.

[0026] Figure 3 This invention Figure 2 A partial enlarged view of part A.

[0027] Figure 4 It is a partial three-dimensional structural diagram of the self-centering lifting unit and the locking reinforcement unit of the present invention.

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of a part of the bidirectional screw rod, sliding plate, sliding groove, sliding rail and electric slider of the present invention.

[0029] Figure 6 It is a schematic diagram of the three-dimensional structure of the centering support plate, L-shaped rod, driving gear, teeth and U-shaped frame of the present invention.

[0030] Figure 7 It is a partial three-dimensional structural diagram of the control motor, limit rod and limit plate of the present invention.

[0031] Figure 8 It is a schematic diagram of a three-dimensional structure of a part of the suspension rod, bidirectional screw rod, sliding plate, sliding rail and electric slider of the present invention.

[0032] Figure 9 It is a left side view of the present invention.

[0033] Figure 10 This invention Figure 9 A partial enlarged view of part B.

[0034] Figure 11 It is a schematic diagram of the three-dimensional structure of the prefabricated component part of the present invention.

[0035] Figure 12 This is a state diagram of the prefabricated component of the present invention when it is hoisted to the installation position.

[0036] Figure 1: Frame; 101: Underframe; 102: H-shaped gantry; 103: Connecting beam; 104: Crossbeam; 2: Hoisting drive unit; 201: Drive assembly; 202: Positioning assembly; 2011: Top guide rail; 2012: Traveling crane carriage; 2013: I-beam; 2014: Electric hoist; 2015: Hanging plate; 2021: Positioning pin drive cylinder; 2022: Positioning plate; 3: Self-centering hoisting unit; 4: Locking reinforcement unit; 5: Load-bearing unit; 6: Extension frame; 7: Extended hydraulic outrigger; 8: Electric steering wheel; 9: Integrated hydraulic outrigger; 10: Integrated diesel generator; 11: Hydraulic station; 12: Prefabricated components; 301: Hoisting fixing assembly; 302: , self-centering hole assembly; 303, control assembly; 304, lifting frame; 3011, bidirectional screw; 3012, sliding plate; 3013, slide groove; 3014, slide rail; 3015, electric slider one; 3016, lifting rod; 3017, lifting hole; 3021, fixing plate; 3022, U-shaped frame; 3023, L-shaped rod; 3024, centering support plate; 3025, limit plate; 3026, limit rod; 3031, control motor; 3032, driving gear; 3033, teeth; 401, hinged seat; 402, locking reinforcement rod; 403, locking groove; 404, locking plug rod; 501, bottom guide rail; 502, electric slider two; 503, load-bearing beam. DETAILED DESCRIPTION

[0037] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that these embodiments are discussed to enable those skilled in the art to better understand and implement the subject matter described herein. The functions and arrangements of the elements discussed may be varied without departing from the scope of protection of this specification. Various examples may omit, substitute, or add various processes or components as needed. In addition, features described with respect to some examples may also be combined in other examples.

[0038] See Figure 1 、 Figure 2 、 Figure 4 、 Figure 11 and Figure 12In this embodiment, a mobile hoisting device for prefabricated components of an assembled bridge deck is proposed, including a frame 1, a hoisting drive unit 2 arranged on the frame 1, and a bearing unit 5 for carrying a prefabricated component 12. The hoisting drive unit 2 includes a driving component 201 and a positioning component 202 for positioning the driving component 201. A self-centering hoisting unit 3 and a locking reinforcement unit 4 are provided at the bottom of the driving component 201. The self-centering hoisting unit 3 includes two symmetrical hoisting frames 304, two hoisting fixing components 301, two self-centering hole components 302 and two control components 303 for controlling the corresponding self-centering hole components 302. A number of hoisting holes 3017 are opened on the front and back sides of the prefabricated component 12.

[0039] See Figure 1 and Figure 2 The frame 1 includes a base frame 101 and two H-shaped portal frames 102 fixedly installed on the top of the base frame 101 and symmetrically arranged on the left and right. The two H-shaped portal frames 102 are connected by a plurality of connecting beams 103, and a cross beam 104 is fixedly installed on the top of the two H-shaped portal frames 102.

[0040] See Figure 1 、 Figure 2 and Figure 4 The driving assembly 201 also includes a top guide rail 2011 fixedly installed on the top of the beam 104 and a traveling crane 2012 slidably connected to the outside of the top guide rail 2011. Two traveling crane trolleys 2012 are commonly installed on the top of the two traveling crane trolleys 2012. Two electric hoists 2014 are slidably connected to the I-beams 2013, and a hanging plate 2015 is fixedly installed on the electric hoist 2014.

[0041] See Figure 1 and Figure 2 An extension frame 6 is fixedly installed at the bottom of the crossbeam 104, and an extended hydraulic support leg 7 is fixedly installed at the bottom of the extension frame 6. Two left-right symmetrical electric steering wheels 8 and four integrated hydraulic support legs 9 distributed in a square are fixedly installed on the base frame 101. A hydraulic station 11 and an integrated diesel generator 10 for powering the equipment are fixedly installed on the right side of the base frame 101.

[0042] See Figure 2 The positioning assembly 202 includes a positioning pin driving cylinder 2021 fixedly installed on the side of the traveling crane 2012 away from the electric hoist 2014 and with a positioning pin fixedly installed on the output end. The side of the beam 104 away from the electric hoist 2014 is fixedly installed with two positioning plates 2022 with positioning holes and cooperating with the positioning pins.

[0043] When in use, in the initial state, the carrying unit 5 is close to the right H-shaped gantry 102. First, the electric steering wheel 8 drives the frame 1 to move to the stacking area of ​​the prefabricated components 12, and then the frame 1 is driven through the left opening of the base frame 101 to the top of the prefabricated components 12 and the integrated hydraulic support legs 9 and the extended hydraulic support legs 7 are controlled to extend and lift the electric steering wheel 8 to fix the frame 1. Then, the two electric hoists 2014 above the same lifting frame 304 are synchronously moved along the I-beam 2013 to drive the lifting frame 3 04 moves, moves the lifting frame 304 to above the corresponding lifting hole 3017, then gradually lowers the lifting frame 304 through the steel wire rope of the electric hoist 2014 until the lifting and fixing component 301 corresponds to the lifting hole 3017, then, the prefabricated component 12 is squeezed by the self-centering hole component 302, and the lifting frame 304 is adjusted to be perpendicular to the prefabricated component 12. During this process, the steel wire rope of the electric hoist 2014 is adaptively twisted, and then docked and installed with the prefabricated component 12 through the lifting and fixing component 301.

[0044] After the installation is completed, the steel wire ropes of the four electric hoists 2014 are operated to lift synchronously to lift the installed prefabricated component 12. After the prefabricated component 12 is lifted, the steel wire ropes of the electric hoists 2014 are automatically reset, thereby driving the hoisting frame 304 to return to a state parallel to the connecting beam 103, and then driving the prefabricated component 12 to be parallel to the connecting beam 103. After lifting, the load-bearing unit 5 is controlled to move below the lifted prefabricated component 12, and then the steel wire ropes of the four electric hoists 2014 are operated to lower synchronously to lower the installed prefabricated component 12 until the prefabricated component 12 falls on the top of the load-bearing unit 5 (such as Figure 1 shown).

[0045] After the installed prefabricated component 12 is lowered and falls on the top of the load-bearing unit 5, the integrated hydraulic support legs 9 and the extended hydraulic support legs 7 are controlled to retract until the electric steering wheel 8 contacts the bridge deck. Then, the electric steering wheel 8 drives the frame 1 to move to the installation area of ​​the prefabricated component 12 and controls the integrated hydraulic support legs 9 and the extended hydraulic support legs 7 to extend and lift the electric steering wheel 8. Since there is an installed prefabricated structure under one of the extended hydraulic support legs 7, this extended hydraulic support leg 7 falls on the plane of the installed prefabricated component 12, and the other extended hydraulic support leg 7 falls on the bridge deck (such as Figure 12As shown), the frame 1 is fixed, and then the steel wire ropes of the four electric hoists 2014 are operated to lift synchronously to lift the prefabricated component 12 that falls on the top of the carrying unit 5. Then, the traveling crane 2012 is controlled to move forward and the positioning pin is driven by the output end of the oil cylinder 2021 to push the positioning pin into the corresponding positioning hole for positioning, thereby lifting and moving the prefabricated component 12 to the top of the installation position. Then, the steel wire ropes of the four electric hoists 2014 are operated to lower synchronously to lower the prefabricated component 12 to the installation position for installation. After installation, the lifting positioning assembly 202 and the self-centering hole assembly 302 are controlled to detach from the prefabricated component 12, and then the integrated hydraulic support legs 9 and the extended hydraulic support legs 7 are retracted, and the electric steering wheel 8 drives the frame 1 to move to enter the next operation cycle.

[0046] See Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 9 The self-centering hole assembly 302 includes a U-shaped frame 3022 fixedly installed at the bottom of the hanging frame 304 through a fixing plate 3021 and two L-shaped rods 3023 slidably connected to the top of the U-shaped frame 3022. A centering support plate 3024 is fixedly installed on the side of the L-shaped rod 3023 away from the U-shaped frame 3022. The left and right hanging frames 304 are respectively fixedly installed at the bottom of the corresponding two hanging plates 2015.

[0047] See Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 9 The self-centering hole assembly 302 also includes two limit plates 3025 fixedly mounted on the bottom of the U-shaped frame 3022 and a limit rod 3026 fixedly mounted on the side of the centering support plate 3024 close to the U-shaped frame 3022 and sliding through the limit plates 3025. The control assembly 303 includes a control motor 3031 fixedly mounted on the bottom of the U-shaped frame 3022 and the output end slides through the U-shaped frame 3022 and a drive gear 3032 fixedly mounted on the top end of the output shaft of the control motor 3031. A plurality of teeth 3033 meshing with the drive gear 3032 are provided on the side close to the two L-shaped rods 3023.

[0048] When in use, the control motor 3031 is started, and the output shaft of the control motor 3031 rotates to drive the driving gear 3032 to mesh with the teeth 3033, thereby driving the two L-shaped rods 3023 to move away from each other, and then driving the two centering support plates 3024 to move away from each other, so that the four centering support plates 3024 gradually approach the inner walls of the front and rear sides of the prefabricated component 12 until the centering support plates 3024 contact the prefabricated component 12, and then as the centering support plates 3024 continue to move, they will squeeze the prefabricated component 12, and the prefabricated component 12 will not move under the squeezing of the centering support plates 3024 due to its own weight, so the squeezing force will be transmitted to the wire rope of the electric hoist 2014, so that the squeezing force of the prefabricated component 12 will cause the wire rope of the electric hoist 2014 to twist, Until the centering support plate 3024 is completely close to and parallel to the inner wall of the prefabricated component 12, at this time the lifting frame 304 is perpendicular to the prefabricated component 12, and the lifting and fixing component 301 is also facing the outer wall of the prefabricated component 12, thereby utilizing the twisting and deforming characteristics of the wire rope of the electric hoist 2014 itself. As the centering support plate 3024 squeezes the inner wall of the prefabricated component 12, the wire rope twists, and the lifting frame 304 is subjected to the reaction force from the prefabricated component 12, and will automatically adjust to a position perpendicular to the prefabricated component 12, thereby adjusting the lifting and fixing component 301 to a state facing the outer wall of the prefabricated component 12, thereby facilitating the fixed lifting of the prefabricated component 12, and then, the prefabricated component 12 is fixedly installed by cooperating with the lifting and fixing component 301 through the pin shaft.

[0049] After the prefabricated component 12 is lowered to the installation position and installed, the output shaft of the control motor 3031 rotates to drive the driving gear 3032 to rotate, driving the two L-shaped rods 3023 to approach each other, and then driving the two centering support plates 3024 to approach each other, so that the four centering support plates 3024 are separated from the prefabricated component 12 and reset, and then the next operation cycle can be carried out.

[0050] See Figure 4 、 Figure 5 and Figure 9 The lifting and fixing assembly 301 includes a bidirectional screw rod 3011 fixedly installed between the front and rear inner walls of the lifting frame 304 and two sliding plates 3012 threadedly connected to the outside of the bidirectional screw rod 3011 and symmetrically front and back. Two sliding grooves 3013 are provided on the left and right inner walls of the lifting frame 304, and the sliding plates 3012 are slidably connected in the corresponding two sliding grooves 3013.

[0051] See Figure 4 、 Figure 5 、 Figure 9 and Figure 11A slide rail 3014 is fixedly installed at the bottom of the sliding plate 3012, and an electric slider 3015 is slidably connected to the slide rail 3014. A suspension rod 3016 is fixedly installed at the bottom of the electric slider 3015, and a socket corresponding to the suspension hole 3017 is opened on the suspension rod 3016.

[0052] During specific use, the bidirectional screw rod 3011 is driven to rotate by an external power supply, driving the two sliding plates 3012 to approach each other along the corresponding slide groove 3013, thereby driving the two slide rails 3014 to approach each other, and then the electric slider 3015 is used to drive the suspension rod 3016 to move, so that the two suspension rods 3016 are close to each other. When the socket on the suspension rod 3016 corresponds to the height of the lifting hole 3017 on the prefabricated component 12, the electric slider 3015 is controlled to move left or right along the slide rail 3014 according to the position difference between the socket and the lifting hole 3017 until the socket on the suspension rod 3016 is aligned with the corresponding lifting hole 3017, and then the pin shaft is inserted into the lifting hole 3017 through the socket to fix and lock it. Then, the installed prefabricated component 12 is controlled by the wire rope of the electric hoist 2014 for lifting operation.

[0053] After the prefabricated component 12 is lowered to the installation position and installed, the bidirectional screw rod 3011 is driven to rotate by an external power supply, driving the two sliding plates 3012 to move away from each other along the corresponding slide grooves 3013, thereby driving the two slide rails 3014 to move away from each other, and then driving the electric slider 3015 to move the suspension rod 3016, so that the two suspension rods 3016 move away from each other and detach from the prefabricated component 12 for reset, and then the next operation cycle can be carried out.

[0054] See Figure 1 and Figure 4 The locking reinforcement unit 4 includes two pairs of hinged seats 401 fixedly installed on the side close to the two lifting frames 304 and locking reinforcement rods 402 hinged on the hinged seats 401. The four hinged seats 401 are distributed in a square shape. Locking grooves 403 are opened on the locking reinforcement rods 402, and are alternately arranged up and down. The four locking reinforcement rods 402 are locked together by locking rods 404 and locking grooves 403 during lifting.

[0055] During specific use, after the pin shaft passes through the jack and is inserted into the lifting hole 3017 for fixed installation and locking, the four locking reinforcement rods 402 on the left and right lifting frames 304 are rotated so that the four locking reinforcement rods 402 are close to each other until the locking grooves 403 on the four locking reinforcement rods 402 are staggered with each other, and then the locking plug rods 404 are inserted into the holes formed by the staggered relationship between the four locking reinforcement rods 402, thereby fixing the locking reinforcement rods 402. By rotating the locking reinforcement rods 402, making them close to each other and staggered and through the insertion of the locking plug rods 404, a more stable frame structure is formed, which not only enhances the strength of the lifting frame 304 itself, but also further consolidates the connection between the left and right lifting frames 304. After locking, the lifting frame 304 can better withstand the force generated during the lifting process, thereby ensuring the safety and stability of the lifting operation.

[0056] After the prefabricated component 12 is lowered to the installation position and installed, the rods inserted between the four locking reinforcement rods 402 are pulled out, the connection and locking reinforcement between the two hanging frames 304 are released, and the locking reinforcement rods 402 are rotated and reset, and then the next operation cycle can be carried out.

[0057] See Figure 1 、 Figure 2 and Figure 3 The carrying unit 5 includes two pairs of bottom guide rails 501 fixedly installed on the top of the base frame 101 and symmetrical front and back. Two electric sliders 502 are slidably connected to the top of the same pair of bottom guide rails 501. The tops of the two electric sliders 502 corresponding to the front and back of the two pairs of bottom guide rails 501 are jointly installed with a load-bearing beam 503. The two load-bearing beams 503 are used to carry the prefabricated components 12 when the frame 1 moves.

[0058] During specific use, after the prefabricated component 12 is lifted, the electric slider 2 502 is controlled to move, and the load-bearing frame 503 is driven to move to the side close to the prefabricated component 12 to the bottom of the prefabricated component 12, and then the steel wire ropes of the four electric hoists 2014 are operated to be lowered synchronously, and the installed prefabricated component 12 is lowered and falls on the top of the load-bearing beam 503, so as to avoid the prefabricated component 12 being always in a lifted state during the movement, causing the prefabricated component 12 to shake or tilt due to external forces such as vibration, so that the inclination angle needs to be corrected frequently during subsequent installation, thereby increasing the difficulty of installation.

[0059] By controlling the second electric slider 502 to slide on the top of the bottom guide rail 501, the distance between the two load-bearing beams 503 can be controlled, and adaptive adjustment can be made according to the different specifications of the prefabricated components 12.

[0060] Finally, it should be noted that the above embodiments are merely examples for the purpose of illustrating the present invention and are not intended to limit the embodiments. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not necessary and impossible to provide an exhaustive list of all embodiments. However, obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A mobile hoisting device for prefabricated components of assembled bridge decks, characterized in that: include: A frame (1), a hoisting drive unit (2) arranged on the frame (1), and a bearing unit (5) for bearing a prefabricated component (12), wherein the hoisting drive unit (2) comprises a drive assembly (201) and a positioning assembly (202) for positioning the drive assembly (201), a self-centering hoisting unit (3) and a locking reinforcement unit (4) are arranged at the bottom of the drive assembly (201), and the self-centering hoisting unit (3) comprises two bilaterally symmetrical hoisting frames (304), two hoisting fixing assemblies (301), two self-centering hole alignment assemblies (302), and two control assemblies (303) for controlling the corresponding self-centering hole alignment assemblies (302); The self-centering hole alignment assembly (302) comprises a U-shaped frame (3022) fixedly mounted on the bottom of a hanging frame (304) via a fixing plate (3021) and two L-shaped rods (3023) slidably connected to the top of the U-shaped frame (3022); a centering support plate (3024) is fixedly mounted on the side of the L-shaped rod (3023) away from the U-shaped frame (3022); the driving assembly (201) comprises a plurality of electric hoists (2014) distributed in a square shape and hanging plates (2015) fixedly mounted on the electric hoists (2014); and the left and right hanging frames (304) are respectively fixedly mounted on the bottoms of the corresponding two hanging plates (2015); The control assembly (303) controls the two L-shaped rods (3023) to move away from each other, driving the two centering support plates (3024) to move away from each other, so that the four centering support plates (3024) support the prefabricated component (12). When the prefabricated component (12) deviates, the centering support plates (3024) are tightened to twist the steel wire rope of the electric hoist (2014), so that the centering support plates (3024) are close to and parallel to the prefabricated component (12). The locking reinforcement unit (4) comprises two pairs of hinged seats (401) fixedly mounted on adjacent sides of two hanging frames (304) and locking reinforcement rods (402) hinged on the hinged seats (401), the four hinged seats (401) being distributed in a square shape, the locking reinforcement rods (402) being provided with locking grooves (403) which are alternately arranged up and down, and the four locking reinforcement rods (402) are locked together by the locking rods (404) and the locking grooves (403) during hanging; The hoisting and fixing assembly (301) comprises a bidirectional screw rod (3011) fixedly mounted between the front and rear inner walls of the hoisting frame (304) and two sliding plates (3012) threadedly connected to the outside of the bidirectional screw rod (3011) and symmetrically arranged front and back. Two sliding grooves (3013) are respectively provided on the left and right inner walls of the hoisting frame (304), and the sliding plates (3012) are slidably connected in the corresponding two sliding grooves (3013). The self-centering hole alignment assembly (302) further comprises two limit plates (3025) fixedly mounted on the bottom of the U-shaped frame (3022) and a limit rod (3026) fixedly mounted on a side of the centering support plate (3024) close to the U-shaped frame (3022) and slidingly passing through the limit plates (3025). The control assembly (303) comprises a control motor (3031) fixedly mounted on the bottom of the U-shaped frame (3022) and with an output end slidingly passing through the U-shaped frame (3022), and a drive gear (3032) fixedly mounted on the top end of the output shaft of the control motor (3031). A plurality of teeth (3033) meshing with the drive gear (3032) are provided on the adjacent sides of the two L-shaped rods (3023).

2. The mobile hoisting equipment for prefabricated components of assembled bridge decks according to claim 1, characterized in that: A slide rail (3014) is fixedly installed at the bottom of the sliding plate (3012), and an electric slider (3015) is slidably connected to the slide rail (3014). A plurality of hoisting holes (3017) are provided on both the front and rear sides of the prefabricated component (12), and a suspension rod (3016) is fixedly installed at the bottom of the electric slider (3015), and a socket corresponding to the hoisting holes (3017) is provided on the suspension rod (3016).

3. The mobile hoisting equipment for prefabricated components of assembled bridge decks according to claim 1, characterized in that: The bearing unit (5) comprises two pairs of bottom guide rails (501) fixedly mounted on the top of the bottom frame (101) and symmetrical in front and back, two electric sliders (502) being slidably connected to the top of the same pair of bottom guide rails (501), and a load-bearing beam (503) being mounted on the top of the two electric sliders (502) corresponding to each other in the front and back of the two pairs of bottom guide rails (501). The two load-bearing beams (503) are used to carry the prefabricated components (12) when the frame (1) moves.

4. The mobile hoisting equipment for prefabricated components of assembled bridge decks according to claim 1, characterized in that: The frame (1) comprises a base frame (101) and two H-shaped portal frames (102) fixedly mounted on the top of the base frame (101) and symmetrical to each other. The two H-shaped portal frames (102) are connected via a plurality of connecting beams (103), and a cross beam (104) is fixedly mounted on the top of each of the two H-shaped portal frames (102).

5. The mobile hoisting equipment for prefabricated components of assembled bridge decks according to claim 4, characterized in that: The driving assembly (201) further comprises a top guide rail (2011) fixedly mounted on the top of the crossbeam (104) and a traveling crane carriage (2012) slidably connected to the outside of the top guide rail (2011); two I-beams (2013) are commonly mounted on the tops of the two traveling crane carriages (2012); and an electric hoist (2014) is slidably connected to the corresponding I-beams (2013).

6. The mobile hoisting equipment for prefabricated components of assembled bridge decks according to claim 4, characterized in that: An extension frame (6) is fixedly mounted on the bottom of the crossbeam (104), an extension hydraulic support leg (7) is fixedly mounted on the bottom of the extension frame (6), two electric steering wheels (8) symmetrically arranged on the left and right and four integrated hydraulic support legs (9) distributed in a square are fixedly mounted on the bottom frame (101), and a hydraulic station (11) and an integrated diesel generator (10) for powering the equipment are fixedly mounted on the right side of the bottom frame (101).

7. The mobile hoisting equipment for prefabricated components of assembled bridge decks according to claim 4, characterized in that: The positioning assembly (202) includes a positioning pin driving cylinder (2021) fixedly mounted on a side of the traveling crane vehicle (2012) away from the electric hoist (2014), and having a positioning pin fixedly mounted on the output end; and two positioning plates (2022) with positioning holes and cooperating with the positioning pins are fixedly mounted on a side of the crossbeam (104) away from the electric hoist (2014).

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