Prefabricated building prefabricated component hoisting device and use method thereof

Abstract

This invention provides a hoisting device for prefabricated building components and its method of use, belonging to the field of prefabricated slab hoisting technology. The hoisting device and method include a column, a base fixedly installed on the bottom surface of the column, a hoisting beam installed on one side surface of the column, a hoisting cable internally installed in the hoisting drive component, a rectangular plate connected to the bottom end of the hoisting cable, and a prefabricated slab hoisting clamping mechanism located below the rectangular plate. By setting up a prefabricated slab hoisting clamping mechanism, in conjunction with guide rails, a movable frame, and a hydraulic telescopic rod, the distance between the two clamping frames can be flexibly adjusted to adapt to prefabricated slabs of different lengths and widths, improving the versatility of the device, eliminating the need to change hoisting tools, reducing construction costs, and increasing work efficiency; simultaneously, the wedge-shaped bottom support plate can easily extend under the prefabricated slab to achieve stable bottom support and clamping.

Description

Technical Field

[0001] This invention relates to the field of precast slab hoisting technology, and more specifically, to a hoisting device for precast components of assembled buildings and its usage method. Background Technology

[0002] Prefabricated buildings have become an important direction for the development of the construction industry due to their advantages such as high construction efficiency, green environmental protection and controllable component quality. As the core component of prefabricated buildings, the hoisting operation of prefabricated panels is a key process in the construction process. Currently, the precast slab hoisting devices used in construction projects mostly employ simple lifting tools combined with wire rope binding and clamping, which has several technical defects: First, the clamping structure of traditional hoisting devices has poor adjustability, making it difficult to adapt to precast slabs of different lengths and widths, resulting in insufficient versatility. Different lifting tools need to be replaced during construction, increasing construction costs and operation time. Second, the clamping center of gravity is prone to shift during the clamping process, causing severe shaking of the precast slab during hoisting, which not only affects the hoisting accuracy but also poses a safety hazard of precast slab falling off. Third, the fixed spacing between the lifting tools and the clamping mechanism during hoisting makes it impossible to tighten the spacing when hoisting large precast slabs, further aggravating the shaking problem and reducing hoisting stability. Fourth, traditional clamping structures only achieve simple clamping on one or both sides, lacking secondary limiting protection for the precast slab. The precast slab is prone to displacement and slippage during hoisting, and the clamping contact points are prone to damage to the edges and corners of the precast slab due to hard contact, affecting the quality of the component.

[0003] Furthermore, existing hoisting devices suffer from cumbersome operation procedures, poor coordination between clamping and hoisting, and require multiple manual adjustments to the clamping position and lifting gear status, resulting in low work efficiency and high professional requirements for operators. This makes it difficult to meet the large-scale, standardized construction needs of prefabricated buildings. Therefore, there is an urgent need to develop a highly adaptable, stable, safe, and easy-to-operate hoisting device for prefabricated building components to address the aforementioned problems in existing technologies. Summary of the Invention

[0004] To overcome the above deficiencies, the present invention provides a prefabricated component hoisting device for prefabricated buildings and its method of use, which overcomes or at least partially solves the above technical problems.

[0005] This invention is implemented as follows: This invention provides a hoisting device for prefabricated components of assembled buildings, including a column, a base fixedly installed on the bottom surface of the column, a hoisting beam installed on one side surface of the column, a hoisting drive component installed on the outside of the hoisting beam, a hoisting steel cable installed inside the hoisting drive component, a rectangular plate connected to the bottom end of the hoisting steel cable, and a prefabricated slab hoisting clamping mechanism installed below the rectangular plate. The precast slab hoisting and clamping mechanism includes a main frame, with two clamping frames below the main frame. Corresponding connecting seats are fixedly installed at the four corners of the top surface of the main frame and on both sides of the rectangular plate. Multiple connecting seats are connected to each other by hoisting steel belts, and the multiple connecting seats and hoisting steel belts are symmetrically distributed.

[0006] In a preferred embodiment, a guide rail is fixedly installed on the bottom surface of the main frame, and two sets of movable frames are installed on the outer side of the guide rail. The two clamping frames are symmetrically installed on the bottom surface of the two sets of movable frames.

[0007] In a preferred embodiment, the inner side of the clamping frame is provided with two hydraulic telescopic rods, which are arranged opposite each other. A connecting seat is fixedly installed on the inner side of the clamping frame, and one end of the hydraulic telescopic rod is connected to the inside of the clamping frame through the connecting seat.

[0008] In a preferred embodiment, a bottom support plate is fixedly installed on the bottom surface of each clamping frame, and the bottom surface of the bottom support plate is wedge-shaped.

[0009] In a preferred embodiment, a fixing plate is fixedly installed at the center of the top surface of the main frame, a rotating shaft is rotatably installed inside the fixing plate, a gear is fixedly sleeved on the outer surface of the rotating shaft, a limiting frame is fixedly installed on the bottom surface of the fixing plate, a toothed plate is movably engaged inside the limiting frame, the toothed plate and the gear mesh with each other, there are two toothed plates, and the bottom surfaces of the two toothed plates are respectively connected to the bottom surface of the clamping frame.

[0010] In a preferred embodiment, the top surface of the main frame is provided with a tightening mechanism, which includes two limiting frames. The limiting frames are movably engaged with toothed plates inside each limiting frame. A gear is fixedly sleeved on the outer surface of the rotating shaft above the fixed plate, and the toothed plates and gears mesh with each other.

[0011] In a preferred embodiment, a connecting frame is fixedly installed at one end of the toothed plate 2, and L-shaped frames are fixedly installed at both ends of the top surface of the connecting frame. A fixing sleeve is fixedly installed at one end of the L-shaped frame, and an installation shaft is rotatably installed inside the fixing sleeve. A pressure roller is fixedly sleeved on the outer surface of the installation shaft, and the outer surface of the pressure roller is in contact with the outer surface of the lifting steel belt.

[0012] In a preferred embodiment, the clamping frame is provided with a hoisting protection mechanism, which includes a C-shaped frame. The clamping frame has a limiting groove inside, and the C-shaped frame is movably engaged inside the limiting groove. A hydraulic telescopic rod is fixedly installed between the top surface of the C-shaped frame and the bottom surface of the clamping frame. A pressure plate is fixedly installed at one end of the hydraulic telescopic rod located inside the clamping frame. A pressing block is provided below the pressure plate, and the bottom surface of the pressing block has multiple anti-slip grooves.

[0013] In a preferred embodiment, a spring is fixedly connected between the pressure plate and the clamping block, and a damper is provided inside the spring.

[0014] A method for hoisting and using prefabricated components in prefabricated buildings includes the following steps: S1: Device commissioning. Start the main control system of the hoisting device, check the operating status of the hoisting drive components, hydraulic telescopic rod one, and hydraulic telescopic rod two, confirm the meshing accuracy of the rotating shaft, gear one, and gear two, as well as the contact status between the pressure roller and the hoisting steel belt, and adjust the two clamping frames to the initial opening position to complete the device commissioning. S2: Precast slab alignment, control the hoisting drive to release the hoisting steel cable, so that the precast slab hoisting clamping mechanism is lowered to a suitable height above the precast slab. According to the length specification of the precast slab, adjust the initial distance between the two clamping frames through the guide rail and the moving frame so that the clamping frames are aligned with the two ends of the precast slab. S3: Clamping and positioning, control the extension of the hydraulic telescopic rod to drive the two clamping frames to move towards each other along the guide rail, so that the bottom support plate set on the wedge surface extends under the precast slab until the two clamping frames clamp the precast slab in the center. During this process, the toothed plate moves with the clamping frame and drives the gear and the shaft to rotate, ensuring that the two clamping frames move synchronously and avoiding the clamping center of gravity from shifting. S4: Tightening and adjusting the distance. While the rotating shaft rotates, it drives the second gear to rotate, which in turn drives the second toothed plate to move along the second limit frame. The second toothed plate drives the connecting frame and the pressure roller to move towards the hoisting steel belt. The pressure roller forms a pressure and tightening on the hoisting steel belt. The distance between the rectangular plate and the hoisting clamping mechanism of the precast plate is automatically adjusted according to the specifications of the precast plate. The distance is tightened for large precast plates and increased for small precast plates to reduce the hoisting sway amplitude. S5: Secondary limiting, controls the extension of the hydraulic telescopic rod, drives the C-shaped frame to move downward along the limiting groove, so that the clamping block contacts and abuts the upper surface of the precast slab. The anti-slip groove increases the contact friction, and the spring and damper buffer the clamping force to avoid hard contact and damage to the precast slab, thus completing the secondary limiting and fixing of the precast slab. S5: Lifting operation. After confirming that the precast slab is clamped and limited, start the lifting drive to wind up the lifting steel cable, which will drive the precast slab to rise slowly and steadily. Under the action of the symmetrical connecting seat 2, the lifting steel belt will form a uniform lifting tightening force to ensure that the precast slab rises steadily. After the precast slab is lifted to the designated construction position, the hydraulic telescopic rod 2 and hydraulic telescopic rod 1 will be operated in reverse order to release the precast slab and complete one lifting operation.

[0015] The present invention provides a hoisting device for prefabricated building components and its method of use, the beneficial effects of which include: 1. By setting up a precast slab hoisting and clamping mechanism, in conjunction with guide rails, a moving frame and a hydraulic telescopic rod, the distance between the two clamping frames can be flexibly adjusted to adapt to precast slabs of different lengths and widths, improving the versatility of the device, eliminating the need to change the lifting tools, reducing construction costs and improving work efficiency; at the same time, the bottom support plate set on the wedge surface can easily extend under the precast slab to achieve stable bottom support and clamping, preventing the precast slab from tipping over or slipping during clamping.

[0016] 2. By setting up a tightening mechanism and utilizing the linkage of the rotating shaft, the clamping action of the clamping frame and the tightening action of the pressure roller are synchronized. The tension of the lifting steel belt is automatically adjusted according to the specifications of the precast slab, so as to realize the adaptive adjustment of the distance between the rectangular slab and the precast slab lifting clamping mechanism. The distance is reduced for large precast slabs and increased for small precast slabs, which specifically reduces the lifting sway amplitude of precast slabs of different specifications and further improves the lifting stability.

[0017] 3. By setting up a hoisting protection mechanism, the hydraulic telescopic rod II drives the clamping block to achieve secondary positioning of the precast slab. The anti-slip groove increases the contact friction to prevent displacement of the precast slab during hoisting. The spring and damper form a flexible clamping structure, which not only ensures the clamping effect but also avoids damage to the edges and corners of the precast slab caused by hard contact, thus protecting the quality of the precast slab components. At the same time, the secondary positioning further improves the safety protection level during hoisting. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is an overall perspective view provided by an embodiment of the present invention; Figure 2 A schematic diagram of the overall front view structure provided for an embodiment of the present invention; Figure 3A schematic diagram of the precast slab clamping and hoisting mechanism provided for an embodiment of the present invention; Figure 4 A schematic diagram of the bottom structure of the precast slab hoisting and clamping mechanism provided in an embodiment of the present invention; Figure 5 A schematic diagram of the hoisting and tightening mechanism provided for an embodiment of the present invention; Figure 6 A schematic diagram of the hoisting protection mechanism provided for an embodiment of the present invention; Figure 7 This is a front view schematic diagram of the precast slab hoisting and clamping mechanism provided in an embodiment of the present invention.

[0020] In the diagram: 1. Column; 2. Base; 3. Lifting beam; 4. Lifting drive component; 5. Lifting cable; 6. Rectangular plate; 7. Precast slab lifting and clamping mechanism; 71. Main frame; 72. Guide rail; 73. Moving frame; 74. Clamping frame; 75. Connecting seat one; 76. Hydraulic telescopic rod one; 77. Bottom support plate; 78. Fixed plate; 79. Rotating shaft; 710. Gear one; 711. Limiting frame one; 712. Gear plate one; 8. Connecting seat two; 9. 10. Lifting steel belt; 10. Tightening mechanism; 101. Limiting frame II; 102. Toothed plate II; 103. Gear II; 104. Connecting frame; 105. L-shaped frame; 106. Fixing sleeve; 107. Mounting shaft; 108. Pressure roller; 11. Lifting protection mechanism; 111. C-shaped frame; 112. Limiting groove; 113. Hydraulic telescopic rod II; 114. Pressure plate; 115. Pressing block; 116. Spring; 117. Damper; 118. Anti-slip groove. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Reference Figures 1-7 The present invention provides a technical solution: a hoisting device for prefabricated components of prefabricated buildings, including a column 1, a base 2 fixedly installed on the bottom surface of the column 1, a hoisting beam 3 installed on one side surface of the column 1, a hoisting drive component 4 installed on the outside of the hoisting beam 3, a hoisting steel cable 5 installed inside the hoisting drive component 4, a rectangular plate 6 connected to the bottom end of the hoisting steel cable 5, and a prefabricated panel hoisting clamping mechanism 7 installed below the rectangular plate 6; The precast slab hoisting and clamping mechanism 7 includes a main frame 71, with two clamping frames 74 below the main frame 71. Corresponding connecting seats 8 are fixedly installed at the four corners of the top surface of the main frame 71 and on both sides of the rectangular plate 6. Multiple connecting seats 8 are connected to each other by hoisting steel belts 9. The multiple connecting seats 8 and the hoisting steel belts 9 are symmetrically distributed. During the hoisting process, connecting seats 8 are provided at the four corners of the main frame 71 and on both sides of the rectangular plate 6. Hoisting steel belts 9 are connected between the connecting seats 8. When the precast slab is hoisted up, the hoisting steel belts 9 and the precast slab hoisting clamping mechanism 7 can form a symmetrical hoisting tightening force, so that the hoisting force on the precast slab hoisting clamping mechanism 7 can be applied more symmetrically. Therefore, it can ensure that the precast slab can rise steadily during the hoisting process and increase the safety of the whole device during use.

[0023] A guide rail 72 is fixedly installed on the bottom surface of the main frame 71. Two sets of movable frames 73 are installed on the outer side of the guide rail 72. Two clamping frames 74 are symmetrically installed on the bottom surface of the two sets of movable frames 73. A hydraulic telescopic rod 76 is provided on the inner side of the clamping frame 74. There are two hydraulic telescopic rods 76, which are arranged opposite each other. A connecting seat 75 is fixedly installed on the inner side of the clamping frame 74. One end of the hydraulic telescopic rod 76 is connected to the inside of the clamping frame 74 through the connecting seat 75. A bottom support plate 77 is fixedly installed on the bottom surface of each clamping frame 74. The bottom surface of the bottom support plate 77 is wedge-shaped. During the clamping of the precast slab, that is, during the movement of the two clamping frames 74 towards each other, the wedge-shaped bottom support plate 77 can better extend under the precast slab placed on the ground to clamp the precast slab, which facilitates the subsequent hoisting operation of the precast slab.

[0024] During operation, by controlling the extension and retraction of the hydraulic telescopic rod 76, the movement of the two clamping frames 74 can be driven. When the two clamping frames 74 move towards each other, they can clamp the precast slab; otherwise, they can release the precast slab. After the precast slab is stably clamped, the hoisting drive component 4 can be activated to drive the hoisting cable 5 to be wound up, so that the precast slab hoisting clamping mechanism 7 can move slowly upward to realize the hoisting operation of the precast slab.

[0025] A fixing plate 78 is fixedly installed in the middle of the top surface of the main frame 71. A rotating shaft 79 is rotatably installed inside the fixing plate 78. A gear 710 is fixedly sleeved on the outer surface of the rotating shaft 79. A limit frame 711 is fixedly installed on the bottom surface of the fixing plate 78. A toothed plate 712 is movably engaged inside the limit frame 711. The toothed plate 712 and the gear 710 mesh with each other. There are two toothed plates 712. The bottom surfaces of the two toothed plates 712 are respectively connected to the bottom surfaces of the clamping frame 74. When the two clamping frames 74 move towards each other, that is, during the clamping of the precast slab, the two toothed plates 712 can move inside the limit frame 711. Under the action of the gear 710, the two clamping frames 74 can always maintain synchronous movement, preventing the clamping center of gravity from being unstable and causing swaying during subsequent hoisting.

[0026] The top surface of the main frame 71 is provided with a tightening mechanism 10. The tightening mechanism 10 includes two limit frames 101. The limit frames 101 are movably engaged with toothed plates 102. The outer surface of the rotating shaft 79 above the fixed plate 78 is fixedly sleeved with a gear 103. The toothed plates 102 and the gears 103 mesh with each other. A connecting frame 104 is fixedly installed at one end of the toothed plates 102. L-shaped frames 105 are fixedly installed at both ends of the top surface of the connecting frame 104. A fixed sleeve 106 is fixedly installed at one end of the L-shaped frame 105. An installation shaft 107 is rotatably installed inside the fixed sleeve 106. A pressure roller 108 is fixedly sleeved on the outer surface of the installation shaft 107. The outer surface of the pressure roller 108 is in contact with the outer surface of the lifting steel belt 9.

[0027] During operation, when the precast slab is clamped, that is, when the rotating shaft 79 rotates, the toothed plate 102 moves synchronously. During the movement of the toothed plate 102, the connecting frame 104 moves synchronously, which in turn causes the pressure roller 108 to tighten the lifting steel belt 9. In other words, the distance between the movement of the two clamping frames 74 determines the locking degree of the pressure roller 108. The smaller the length of the precast slab clamped by the two clamping frames 74, the smaller the tightening degree, and vice versa. The smaller the distance between the rectangular plate 6 and the precast slab lifting clamping mechanism 7, the less swaying occurs during lifting. When lifting large precast slabs, the smaller the distance between the rectangular plate 6 and the precast slab lifting clamping mechanism 7, and the larger the distance between the rectangular plate 6 and the precast slab lifting clamping mechanism 7, the more stable the lifting process of large precast slabs can be achieved.

[0028] The clamping frame 74 is equipped with a hoisting protection mechanism 11, which includes a C-shaped frame 111. A limiting groove 112 is formed inside the clamping frame 74. The C-shaped frame 111 is movably engaged within the limiting groove 112. A hydraulic telescopic rod 113 is fixedly installed between the top surface of the C-shaped frame 111 and the inner bottom surface of the clamping frame 74. A pressure plate 114 is fixedly installed at one end of the hydraulic telescopic rod 113 located inside the clamping frame 74. Below the pressure plate 114... A clamping block 115 is provided, and multiple anti-slip grooves 118 are provided on the bottom surface of the clamping block 115. The anti-slip grooves 118 can increase the friction force in contact with the precast slab, so that the precast slab can be clamped more stably. A spring 116 is fixedly connected between the pressing plate 114 and the clamping block 115. A damper 117 is provided inside the spring 116. The spring 116 and the damper 117 can effectively protect the precast slab when clamping.

[0029] A method for hoisting and using prefabricated components in prefabricated buildings includes the following steps: S1: Device commissioning, start the main control system of the hoisting device, check the operating status of hoisting drive component 4, hydraulic telescopic rod 1 76, and hydraulic telescopic rod 2 113, confirm the meshing accuracy of rotating shaft 79, gear 1 710, and gear 2 103, as well as the contact status between pressure roller 108 and hoisting steel belt 9, and at the same time adjust the two clamping frames 74 to the initial opening position to complete the device commissioning; S2: The precast slab is aligned. The hoisting drive component 4 is controlled to release the hoisting steel cable 5, so that the precast slab hoisting clamping mechanism 7 is lowered to a suitable height above the precast slab. According to the length specification of the precast slab, the initial distance between the two clamping frames 74 is adjusted through the guide rail 72 and the moving frame 73 so that the clamping frames 74 are aligned with the two ends of the precast slab. S3: Clamping and positioning, control the extension of the hydraulic telescopic rod 76, drive the two clamping frames 74 to move towards each other along the guide rail 72, so that the bottom support plate 77 set on the wedge surface extends under the precast slab until the two clamping frames 74 clamp the precast slab in the center. During this process, the toothed plate 712 moves with the clamping frame 74 and drives the gear 710 and the rotating shaft 79 to rotate, ensuring that the two clamping frames 74 move synchronously and avoiding the clamping center of gravity from shifting. S4: Tightening and adjusting the distance. While rotating the shaft 79, it drives the gear 103 to rotate, which in turn drives the toothed plate 102 to move along the limit frame 101. The toothed plate 102 drives the connecting frame 104 and the pressure roller 108 to move towards the hoisting steel belt 9. The pressure roller 108 forms a pressure and tightening on the hoisting steel belt 9. The distance between the rectangular plate 6 and the precast plate hoisting clamping mechanism 7 is automatically adjusted according to the specifications of the precast plate. The distance is tightened for large precast plates and increased for small precast plates to reduce the hoisting sway amplitude. S5: Secondary limiting, controlling the extension of the hydraulic telescopic rod 113, driving the C-shaped frame 111 to move downward along the limiting groove 112, so that the pressing block 115 contacts and presses against the upper surface of the precast slab. The anti-slip groove 118 increases the contact friction, and the spring 116 and damper 117 buffer the pressing force to avoid hard contact damaging the precast slab, thus completing the secondary limiting and fixing of the precast slab. S6: Lifting operation. After confirming that the precast slab is clamped and limited, start the lifting drive 4 to wind up the lifting steel cable 5, which will drive the precast slab to rise slowly and steadily. The lifting steel belt 9 forms a uniform lifting tightening force under the action of the symmetrical connecting seat 8, ensuring that the precast slab rises steadily. After the precast slab is lifted to the designated construction position, the hydraulic telescopic rod 113 and the hydraulic telescopic rod 76 are operated in reverse order to release the precast slab and complete one lifting operation.

[0030] During operation, when the precast slab is stably clamped in the center by the two clamping frames 74, the C-shaped frame 111 can be driven to move downward inside the limiting groove 112 by controlling the activation of the hydraulic telescopic rod 113. This causes the pressure plate 114 and the clamping block 115 to move downward inside the clamping frame 74 until the clamping block 115 contacts and clamps the precast slab, thus achieving a second limiting and fixing of the precast slab, further increasing the stability and safety of the precast slab during hoisting.

[0031] Specifically, the working process or working principle of this prefabricated building component hoisting device and its usage method is as follows: During use, firstly, the device is debugged to ensure the normal operation of all power and transmission components; then, the initial spacing of the clamping frames 74 is adjusted according to the prefabricated slab specifications and aligned; the hydraulic telescopic rod 76 drives the two clamping frames 74 to move towards each other along the guide rail 72; the wedge-shaped bottom support plate 77 extends under the prefabricated slab to support and clamp it; during clamping, the clamping frames 74 drive the toothed plate 712 to move; through the meshing of the toothed plate 712 and the gear 710, the two clamping frames 74 are synchronously centered, eliminating the risk of center of gravity shift; simultaneously, the rotating shaft 79 rotates synchronously with the gear 710, driving the gear 103 to drive the toothed plate 102 to move, thereby driving the pressure roller 10. 8. The lifting steel straps 9 are adaptively compressed and tightened. The distance between the rectangular plate 6 and the precast slab lifting clamping mechanism 7 is automatically adjusted according to the precast slab specifications. The distance is reduced for large precast slabs and increased for small precast slabs to specifically reduce lifting sway. After the precast slab is clamped, the hydraulic telescopic rod 113 drives the clamping block 115 to move downward, contacting the upper surface of the precast slab and forming a flexible clamp. The anti-slip groove 118 increases the friction, and the spring 116 and damper 117 buffer the force, completing the secondary limit. Finally, the lifting drive component 4 is started to reel in the lifting steel cable 5. Under the action of the symmetrically distributed lifting steel straps 9 and the connecting seat 8, the precast slab is subjected to uniform force and rises steadily, achieving safe lifting. After being lifted to the designated position, the hydraulic components are reversed to release the secondary limit and clamp in sequence, completing the lifting operation.

[0032] It should be noted that the hoisting drive component 4, the hydraulic telescopic rod 76, and the hydraulic telescopic rod 113 are existing devices or equipment, or devices or equipment that can be implemented with existing technology. Their power supply, specific composition, and principle are clear to those skilled in the art, so they will not be described in detail here.

Claims

1. A hoisting device for prefabricated components of assembled buildings, comprising columns (1), characterized in that, A base (2) is fixedly installed on the bottom surface of the column (1). A lifting beam (3) is installed on one side surface of the column (1). A lifting drive component (4) is installed on the outside of the lifting beam (3). A lifting steel cable (5) is installed inside the lifting drive component (4). A rectangular plate (6) is connected to the bottom end of the lifting steel cable (5). A precast slab lifting clamping mechanism (7) is installed below the rectangular plate (6). The precast slab hoisting and clamping mechanism (7) includes a main frame (71), and two clamping frames (74) are provided below the main frame (71). Corresponding connecting seats (8) are fixedly installed at the four corners of the top surface of the main frame (71) and on both sides of the rectangular plate (6). The multiple connecting seats (8) are connected to each other by hoisting steel belts (9). The multiple connecting seats (8) and the hoisting steel belts (9) are symmetrically distributed.

2. The prefabricated component hoisting device for prefabricated buildings according to claim 1, characterized in that, The bottom surface of the main frame (71) is fixedly equipped with a guide rail (72), and two sets of movable frames (73) are installed on the outside of the guide rail (72). The two clamping frames (74) are respectively symmetrically installed on the bottom surface of the two sets of movable frames (73).

3. The prefabricated component hoisting device for prefabricated buildings according to claim 2, characterized in that, The clamping frame (74) is provided with a hydraulic telescopic rod (76) on its inner side. There are two hydraulic telescopic rods (76), which are arranged opposite to each other. A connecting seat (75) is fixedly installed on the inner side of the clamping frame (74). One end of the hydraulic telescopic rod (76) is connected to the inside of the clamping frame (74) through the connecting seat (75).

4. The prefabricated component hoisting device for prefabricated buildings according to claim 3, characterized in that, The bottom surface of each clamping frame (74) is fixedly equipped with a bottom support plate (77), and the bottom surface of the bottom support plate (77) is set as a wedge.

5. A hoisting device for prefabricated building components according to claim 4, characterized in that, A fixing plate (78) is fixedly installed in the middle of the top surface of the main frame (71). A rotating shaft (79) is rotatably installed inside the fixing plate (78). A gear (710) is fixedly sleeved on the outer surface of the rotating shaft (79). A limiting frame (711) is fixedly installed on the bottom surface of the fixing plate (78). A toothed plate (712) is movably engaged inside the limiting frame (711). The toothed plate (712) meshes with the gear (710). There are two toothed plates (712). The bottom surfaces of the two toothed plates (712) are respectively connected to the bottom surface of the clamping frame (74).

6. The prefabricated component hoisting device for prefabricated buildings according to claim 5, characterized in that, The top surface of the main frame (71) is provided with a tightening mechanism (10). The tightening mechanism (10) includes a second limiting frame (101). There are two second limiting frames (101). The second limiting frame (101) is movably engaged with a second toothed plate (102). The outer surface of the rotating shaft (79) above the fixed plate (78) is fixedly sleeved with a second gear (103). The second toothed plate (102) and the second gear (103) mesh with each other.

7. A hoisting device for prefabricated components of assembled buildings according to claim 6, characterized in that, A connecting frame (104) is fixedly installed at one end of the toothed plate (102). An L-shaped frame (105) is fixedly installed at both ends of the top surface of the connecting frame (104). A fixed sleeve (106) is fixedly installed at one end of the L-shaped frame (105). An installation shaft (107) is rotatably installed inside the fixed sleeve (106). A pressure roller (108) is fixedly sleeved on the outer surface of the installation shaft (107). The outer surface of the pressure roller (108) is in contact with the outer surface of the hoisting steel belt (9).

8. A hoisting device for prefabricated building components according to claim 7, characterized in that, The clamping frame (74) is provided with a hoisting protection mechanism (11). The hoisting protection mechanism (11) includes a C-shaped frame (111). The clamping frame (74) has a limiting groove (112) inside. The C-shaped frame (111) is movably engaged inside the limiting groove (112). A hydraulic telescopic rod (113) is fixedly installed between the top surface of the C-shaped frame (111) and the bottom surface of the clamping frame (74). A pressure plate (114) is fixedly installed at one end of the hydraulic telescopic rod (113) located inside the clamping frame (74). A pressing block (115) is provided below the pressure plate (114). A plurality of anti-slip grooves (118) are provided on the bottom surface of the pressing block (115).

9. A hoisting device for prefabricated building components according to claim 8, characterized in that, A spring (116) is fixedly connected between the pressure plate (114) and the clamping block (115), and a damper (117) is provided inside the spring (116).

10. A method for hoisting prefabricated components of prefabricated buildings, the method being applicable to the hoisting device for prefabricated components of prefabricated buildings as described in claim 9, characterized in that... Includes the following steps: S1: Device debugging, start the main control system of the hoisting device, check the operating status of the hoisting drive component (4), hydraulic telescopic rod one (76), and hydraulic telescopic rod two (113), confirm the meshing accuracy of the rotating shaft (79), gear one (710), and gear two (103), as well as the contact status between the pressure roller (108) and the hoisting steel belt (9), and at the same time adjust the two clamping frames (74) to the initial opening position to complete the device debugging; S2: The precast slab is aligned. The hoisting drive (4) is controlled to release the hoisting cable (5), so that the precast slab hoisting clamping mechanism (7) is lowered to a suitable height above the precast slab. According to the length specification of the precast slab, the initial distance between the two clamping frames (74) is adjusted through the guide rail (72) and the moving frame (73) so that the clamping frames (74) are aligned with the two ends of the precast slab. S3: Clamping and positioning, control the extension of the hydraulic telescopic rod (76), drive the two clamping frames (74) to move towards each other along the guide rail (72), so that the bottom support plate (77) set on the wedge surface extends into the precast plate until the two clamping frames (74) clamp the precast plate in the center. During this process, the toothed plate (712) moves with the clamping frame (74) and drives the gear (710) and the rotating shaft (79) to rotate, ensuring that the two clamping frames (74) move synchronously and avoid the clamping center of gravity from shifting. S4: Tighten the gap. While the rotating shaft (79) rotates, it drives the gear two (103) to rotate, which in turn drives the toothed plate two (102) to move along the limit frame two (101). The toothed plate two (102) drives the connecting frame (104) and the pressure roller (108) to move towards the hoisting steel belt (9). The pressure roller (108) forms a pressure and tightening on the hoisting steel belt (9). The gap between the rectangular plate (6) and the hoisting clamping mechanism (7) is automatically adjusted according to the specifications of the precast plate. The gap is tightened for large precast plates and increased for small precast plates to reduce the hoisting sway amplitude. S5: Secondary limiting, control the extension of the hydraulic telescopic rod (113), drive the C-shaped frame (111) to move downward along the limiting groove (112), so that the pressing block (115) contacts and presses against the upper surface of the precast slab, the anti-slip groove (118) increases the contact friction, the spring (116) and the damper (117) buffer the pressing force, avoid hard contact damage to the precast slab, and complete the secondary limiting and fixing of the precast slab; S6: After confirming that the precast slab is clamped and limited, start the hoisting drive (4) to wind up the hoisting steel cable (5), and drive the precast slab to rise slowly and steadily. The hoisting steel belt (9) forms a uniform hoisting tightening force under the action of the symmetrical connecting seat two (8), ensuring that the precast slab rises steadily. After hoisting the precast slab to the designated construction position, operate the hydraulic telescopic rod two (113) and hydraulic telescopic rod one (76) in reverse order to release the precast slab and complete one hoisting operation.

Images