Laminated slab construction hoisting device and hoisting method

Abstract

The laminated slab construction hoisting device comprises a hoisting frame, the hoisting frame comprises two longitudinal beams arranged in parallel and two transverse beams arranged in parallel, and the two transverse beams are fixed between the two longitudinal beams to form a rectangular frame matched with a laminated slab unit in size; a lifting device and a positioning device are installed on the lifting frame, the lifting device is installed on the opposite sides of the two longitudinal beams, the lifting device comprises a winding assembly and lifting assemblies, the lifting assemblies are symmetrically arranged on the two sides of the winding assembly, the winding assembly is provided with two output ends, and the two output ends are connected with the positioning device. The lifting assemblies on the two sides are driven by the output ends of the two sides of the winding assembly correspondingly, the positioning device is used for positioning the position of the laminated slab, the laminated slab is kept stable in the lifting process, collision and damage caused by shaking are avoided, and the working efficiency is improved. And through stable hoisting and accurate positioning, the risks of shaking and collision of the laminated slab in the hoisting and mounting process are reduced, and the operation safety is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of composite plate hoisting, and in particular relates to a composite plate construction hoisting device and a hoisting method. Background Art

[0002] Prefabricated composite panels can be accurately prefabricated in the factory according to the design drawings, reducing the time of on-site processing. During the factory prefabrication process, the quality of materials and processing technology can be strictly controlled to ensure the accuracy and strength of the prefabricated composite panels. When installing on site, they only need to be assembled according to the design requirements, reducing the errors and uncertainties of on-site construction and improving the quality of the overall building.

[0003] As a prefabricated component commonly used in modern building construction, the composite slab has low construction efficiency during the hoisting and positioning process. The traditional hoisting method often requires operators to bend over and squat for a long time for precise alignment. This posture not only easily causes operator fatigue and increases the pressure on the waist and knee joints, but also affects the accuracy and efficiency of the initial positioning, and increases the difficulty of subsequent adjustment with wedge-shaped wooden blocks. In addition, the existing hoisting devices are often designed in a relatively simple manner, which is difficult to quickly adapt to diverse construction scenarios, limiting construction efficiency and flexibility. Therefore, a composite slab construction hoisting device and hoisting method are provided to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a composite slab construction hoisting device and a hoisting method to solve the problems existing in the background technology.

[0005] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows:

[0006] A composite plate construction lifting device includes a lifting frame, the lifting frame includes two longitudinal beams arranged parallel to each other and two transverse beams arranged parallel to each other, the two transverse beams are respectively fixed between the two longitudinal beams to form a rectangular frame matching the size of the composite plate unit, the lifting frame is equipped with a lifting device and a positioning device, the lifting device is installed on the opposite side of the two longitudinal beams, the lifting device includes a winding assembly and a lifting assembly, the lifting assembly is symmetrically arranged on both sides of the winding assembly, the winding assembly is provided with two output ends, the lifting assemblies on both sides are driven by the output ends on both sides of the winding assembly respectively, and the positioning device is used to position the composite plate.

[0007] In this embodiment, the lifting assembly includes a guide wheel, a fixed pulley and a movable pulley. The movable pulley is arranged between the guide wheel and the fixed pulley. The guide wheel and the fixed pulley are fixedly mounted on the inner side of the longitudinal beam to form a pulley mechanism with the movable pulley. One end of the lifting rope is fixed on the end side of the longitudinal beam, and the other end passes through the guide wheel, the movable pulley and the fixed pulley in sequence and is connected to the output end on the same side of the winding assembly. The lower end of the movable pulley is equipped with a hook for hooking the truss on the upper side of the composite plate.

[0008] In this embodiment, receiving blocks are fixed on both sides of the longitudinal beam at the position of the movable pulley. The receiving block is located at the center between the guide wheel and the fixed pulley. A receiving groove matching the upper side of the movable pulley is opened at the bottom of the receiving block, and the movable pulley is limited by the receiving groove.

[0009] In this embodiment, the winding assembly includes a servo motor and two symmetrically arranged winding rollers. The servo motor is fixedly mounted on the longitudinal beam. The two winding rollers are rotatably mounted on the inner side of the longitudinal beam. The two winding rollers are respectively located on both sides of the servo motor and are matched with the winding assemblies on both sides. The two winding rollers are respectively fixedly connected to the ends of the lifting ropes on the same side. The two winding rollers are both transmission-connected to the output end of the servo motor, and the two winding rollers are driven by the servo motor.

[0010] In this embodiment, the movable pulley is rotatably mounted in the pulley bracket, and the bottoms of the two side plates of the pulley bracket are respectively equipped with assembly ears and fixed ears, and the hook is rotatably mounted between the assembly ears and the fixed ears.

[0011] In this embodiment, the fixed ear is fixedly connected to one side plate of the pulley bracket, the assembly ear is hinged to the other side plate of the pulley bracket, one side of the hook is rotatably matched with the fixed ear through a rotating shaft and a bearing, and a pin shaft coaxially arranged with the rotating shaft is provided on the other side of the hook. A through groove matching the size of the pin shaft is opened on the assembly ear at a position corresponding to the pin shaft. When the assembly ear is rotated downward for assembly, the pin shaft can rotate into the through groove.

[0012] The two ends of the rotating shaft are respectively extended from the outer sides of the longitudinal beam and the transverse beam and provided with threads to form threaded sections, and the threads of the threaded sections at both ends of the rotating shaft are opposite. The threaded sections at both ends of the rotating shaft are threadedly connected with vertically arranged positioning rods. An L-shaped receiving plate is fixed on the longitudinal beam and the transverse beam and on the extended ends of the rotating shaft. The end of the threaded section of the rotating shaft is rotatably transferred to the L-shaped receiving plate, and the rotating shaft extends from the outer side of the L-shaped receiving plate to form a control end. An adjusting handle for facilitating the rotation of the rotating shaft is installed on the control end of the rotating shaft. Guide rods parallel to the rotating rods are also fixed on the longitudinal beam and the transverse beam in the L-shaped receiving plate, and the positioning rods are slidably connected to the guide rods.

[0013] In this embodiment, a locking device for locking the rotating rod is also installed on the L-shaped supporting plate. The locking device includes a horizontal plate fixed on the L-shaped supporting plate and a pin hole arranged on the control end of the rotating rod. The horizontal plate is provided with a slot corresponding to the position and size of the pin hole. The position of the rotating rod is locked by inserting a pin in the slot and the pin hole.

[0014] In this embodiment, an adjustment ruler 264 is fixed to the lower end of the L-shaped receiving plate, and the adjustment ruler 264 is arranged parallel to the rotating rod.

[0015] The present invention also includes a method for hoisting a composite slab using the composite slab hoisting device, comprising the following hoisting steps:

[0016] S1: Lift the lifting rope by the lifting device to lift the lifting frame, then move the lifting frame to the top of the composite plate to be lifted by the lifting device, and use the hook on the lower side of the movable pulley to hang the steel bar on the upper side of the composite plate;

[0017] S2: The lifting device moves the composite board to the top of the position to be installed, so that the positioning device is close to the pre-installed wooden board or the side of the floor slab at the installation location, and the position of the composite board is pre-positioned by the positioning device. Then the servo motor is started to slowly lower the composite board, and finally the operator removes the hook.

[0018] Advantages of the present invention:

[0019] 1. The device is suitable for a variety of construction scenarios, including pre-installed wood board packaging, wallboard and beam edge installation, and composite board installation in the center of the building. The positioning rods in the positioning device can accurately pre-position the composite board in multiple directions to ensure that the composite board is accurately placed on the pre-installed wood board, wallboard or beam. The use of an adjustment ruler to assist in observing the distance between the positioning rod and the installed composite board ensures accurate control of the joint width and improves installation accuracy and efficiency. By adjusting the different combinations and positions of the rotating rod and the positioning rod, it can flexibly respond to various installation needs and challenges, making the device adaptable to more different application scenarios;

[0020] 2. Operators do not need to bend or squat for a long time to perform lifting and positioning operations, which reduces physical burden and labor intensity. The convenient loading and unloading design of the hook allows operators to easily hang and remove the hook without moving the heavy movable pulley;

[0021] 3. The servo motor precisely controls the retraction and release of the lifting rope, and the design of the movable pulley entering the receiving groove further enhances the lifting stability, effectively reduces the shaking of the lifting rope, and keeps the composite plate stable during the lifting process, avoiding collision and damage caused by shaking. Stable lifting and precise positioning reduce the risk of shaking and collision of the composite plate during lifting and installation, and improves operation safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The structure diagram of the composite slab construction hoisting device of the present invention is shown in FIG. Figure 1 ;

[0023] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0024] Figure 3 The structure diagram of the composite slab construction hoisting device of the present invention is shown in FIG. Figure 2 ;

[0025] Figure 4 for Figure 3 The enlarged schematic diagram of point B in the middle;

[0026] Figure 5 for Figure 3 The enlarged schematic diagram of the center C;

[0027] Figure 6 The construction diagram of the composite slab construction hoisting device of the present invention is shown in FIG. Figure 1 ;

[0028] Figure 7 The construction diagram of the composite slab construction hoisting device of the present invention is shown in FIG. Figure 2 ;

[0029] In the attached drawings: 1. lifting frame; 11. composite plate; 12. longitudinal beam; 13. transverse beam; 14. lifting rope; 15. guide wheel; 151. fixed pulley; 152. movable pulley; 153. lifting rope; 154. hook; 16. rotating rod; 161. L-shaped receiving plate; 162. threaded section; 163. positioning rod; 164. adjusting handle; 21. servo motor; 22. winding roller; 23. receiving block; 24. receiving groove; 25. assembly ear; 251. fixing ear; 252. through groove; 253. pin shaft; 26. latch; 261. transverse plate; 262. slot; 263. pin hole; 264. adjusting ruler. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0031] like Figure 1 As shown, a composite plate construction lifting device of the present invention includes a lifting frame 1 and a composite plate 11. The lifting frame 1 includes two longitudinal beams 12 and two transverse beams 13. The two transverse beams 13 are respectively fixedly installed on the left and right sides between the two longitudinal beams 12. A lifting rope 14 is fixedly installed on the upper end of the lifting frame 1. Lifting devices are installed on the front and rear sides of the lifting frame 1. In this embodiment, the longitudinal beam 12 adopts L-shaped steel, and the transverse beam 13 adopts I-shaped steel.

[0032] like Figure 3-5 As shown, the lifting device includes a winding assembly and a lifting assembly, the lifting assembly is symmetrically arranged on both sides of the winding assembly, the winding assembly is provided with two output ends, and the lifting assemblies on both sides are driven by the output ends on both sides of the winding assembly respectively;

[0033] The lifting device is installed on the opposite side of the two longitudinal beams 12. The lifting assembly includes a guide wheel 15, a fixed pulley 151 and a movable pulley 152. The movable pulley is arranged between the guide wheel and the fixed pulley. The guide wheel 15 and the fixed pulley 151 are fixedly assembled on the inner side of the longitudinal beam 12 to form a pulley mechanism with the movable pulley 152. One end of the lifting rope 153 is fixed on the longitudinal beam 12, and the other end passes through the guide wheel 15, the movable pulley 152 and the fixed pulley 151 in sequence and is connected to the output end of the winding assembly. When the winding assembly is started, the lifting rope 153 can be wound and released, thereby driving the movable pulley 152 to move. The lower end of the movable pulley 152 is equipped with a hook 154, and the hook 154 is used to hook the truss on the upper side of the composite plate 11.

[0034] like Figure 3As shown, further, receiving blocks 23 are fixed on both sides of the longitudinal beam 12 at the position of the movable pulley 152. The receiving block 23 is located at the center between the guide wheel 15 and the fixed pulley 151. The bottom of the receiving block 23 is provided with a receiving groove 24 that matches the upper side of the movable pulley 152. When the movable pulley 152 rises, it can enter the receiving groove 24. The movable pulley 152 can be limited by the receiving groove 24 to prevent the hoisting rope 153 from shaking and affecting the placement of the composite plate 11.

[0035] The winding assembly includes a servo motor 21 and two symmetrically arranged winding rollers 22. The servo motor 21 is fixedly installed in the middle of the longitudinal beam 12. The two winding rollers 22 are rotatably installed on the inner side of the longitudinal beam 12. The two winding rollers 22 are respectively located on both sides of the servo motor 21 and are matched with the winding assemblies on both sides. The two winding rollers 22 are respectively fixedly connected to the ends of the lifting rope 153 on the same side. The two winding rollers 22 are transmission-connected to the output end of the servo motor 21. The two winding rollers 22 are driven to rotate by the servo motor 21. The lifting ropes 153 on both sides can be retracted and released by relying on the winding rollers 22. Furthermore, the winding assembly can also control the linkage of the two winding rollers 22 to realize the linkage of the lifting assemblies on both sides.

[0036] like Figure 5 As shown, the movable pulley 152 is rotatably transferred in the pulley bracket, and the bottoms of the two side plates of the pulley bracket are respectively equipped with an assembly ear 25 and a fixed ear 251, and the hook 154 is rotatably assembled between the assembly ear 25 and the fixed ear 251. Further, the fixed ear 251 is fixedly connected to one side plate of the pulley bracket, and the assembly ear 25 is hinged to the other side plate of the pulley bracket. One side of the hook 154 is rotatably transferred to the fixed ear 251 through a rotating shaft and a bearing, and a pin shaft 253 coaxially arranged with the rotating shaft is provided on the other side of the hook 154. A through groove 252 matching the size of the pin shaft 253 is opened on the assembly ear 25 at a position corresponding to the pin shaft 253. When the assembly ear 25 is rotated downward for assembly, the pin shaft 253 can be rotated into the through groove 252. When the staff hooks and removes the hook 154, they only need to flip the assembly ear 25 to rotate the hook 154 for loading and unloading, without moving the heavier movable pulley 152.

[0037] like Figure 1-2As shown, the lifting frame 1 is also equipped with a positioning device, which includes two groups of transverse positioning components and two groups of longitudinal positioning components. The transverse positioning components and the longitudinal positioning components have the same structure and both include a rotating rod 16, an L-shaped receiving plate 161, and a positioning rod 163. The rotating rod 16 is rotatably arranged between the two longitudinal beams 12 and between the two transverse beams 13. The two ends of the rotating rod 16 extend from the outside of the longitudinal beam 12 and the transverse beam 13 respectively, and the extended ends are provided with threads to form threaded segments 162. The threads of the threaded segments 162 at both ends of the rotating rod 16 are opposite, and the threaded segments 162 at both ends of the rotating rod 16 are threadedly connected with the vertically arranged positioning rods 16. 3. An L-shaped receiving plate 161 is installed on the longitudinal beam 12 and the transverse beam 13 and on the protruding end of the rotating rod 16. The end of the threaded section 162 of the rotating rod 16 is rotatably transferred to the L-shaped receiving plate 161, and the rotating rod 16 protrudes from the outer side of the L-shaped receiving plate 161 to form a control end. An adjustment handle 164 for conveniently rotating the rotating rod 16 is installed on the control end of the rotating rod 16. A guide rod parallel to the rotating rod 16 is also fixed in the L-shaped receiving plate 161 of the longitudinal beam 12 and the transverse beam 13. The positioning rod 163 is slidably connected with the guide rod. Through the guide rod, the positioning rod 163 moves along the guide rod under the rotation drive of the threaded section 162;

[0038] Furthermore, a locking device for locking the rotating rod 16 is also installed on the L-shaped receiving plate 161, and the locking device includes a cross plate 261 fixed on the L-shaped receiving plate 161 and a pin hole 263 arranged on the control end of the rotating rod 16, and the cross plate 261 is provided with a slot 262 matching the pin hole 263, and the position of the rotating rod 16 is locked by inserting a pin 26 in the slot 262 and the pin hole 263.

[0039] like Figure 3 As shown, an adjustment ruler 264 is fixedly provided at the lower end of the L-shaped receiving plate 161, and the distance between the two relative positioning rods 163 is adjusted in advance by the adjustment ruler 264, so that the distance between the two positioning rods 163 is close to the distance between the pre-installed wooden boards or wall panels at the installation location.

[0040] The present invention also includes a method for hoisting a composite slab, comprising the following hoisting steps:

[0041] S1: Lift the lifting rope 14 by the lifting device to lift the lifting frame 1, then move the lifting frame 1 to the top of the composite plate 11 to be lifted by the lifting device, and use the hook 154 on the lower side of the movable pulley 152 to hang the steel bar on the upper side of the composite plate 11;

[0042] S2: The lifting device uses the lifting frame 1 to move the composite board 11 to the position to be installed, so that the positioning rod 163 is close to the pre-installed wooden board or the side of the floor at the installation location, and the position of the composite board 11 is pre-positioned by the positioning rods 163 on the four sides, and then the servo motor 21 can be started to slowly lower the composite board 11, and finally the operator removes the hook 154;

[0043] When installing the composite board 11, some construction sites will pre-install wooden boards to perform edge sealing or capping processes on the installation position. The size of the pre-installed wooden boards after assembly will be similar to that of the composite board 11. When the composite board 11 is hoisted and installed using the device, Figure 6 As shown, the lifting frame 1 and the composite board 11 are first moved to the position to be installed by the lifting device, and then the servo motor 21 is started to drive the composite board 11 to rise, so that the movable pulley 152 enters the receiving groove 24 to prevent the lifting rope 153 on the upper side of the movable pulley 152 from shaking, and to prevent the composite board 11 from shaking and causing collision during the adjustment of the positioning rod 163. At this time, the operator can stand to support the lifting frame 1, and then slowly adjust the position of the lifting frame 1 by the lifting device, so that the positioning rods 163 in four directions are all located on the outside of the pre-installed wooden board, and then rotate The rotating rod 16 makes the relative positioning rods 163 approach each other, thereby contracting and positioning, and at the same time, the lifting device moves to adjust the position of the lifting frame 1 until the positioning rods 163 on the four sides are close to the pre-installed wooden boards. At this time, the positioning rods 163 on the four sides are also close to the composite board 11, so that the positioning is completed. At this time, it is only necessary to start the servo motor 21 to slowly lower the composite board 11 so that the composite board 11 is in contact with the pre-installed wooden board. During the operation, the operator does not need to keep bending and squatting for a long time. The use of this device can assist the operator to quickly perform the positioning operation of the composite board 11;

[0044] There is also a part of the construction site located at the wall panel or thick beam position, which requires the composite plate 11 to be assembled on the upper end of the wall panel and the beam edge. When the composite plate 11 is hoisted and installed using the device, Figure 7As shown, similar to the above initial operation steps, the lifting frame 1 and the composite plate 11 are first moved to the installation position by the lifting device, and then the servo motor 21 is started to drive the composite plate 11 to rise so that the composite plate 11 will not shake due to the lifting rope 153, and then the rotating rod 16 is adjusted to first make the positioning rod 163 located on the outside of the wall panel or the beam, and then the adjusting rotating rod 16 is rotated to adjust the distance between the relative positioning rods 163, so that the two groups of positioning rods 163 are closed and close to the opposite wall panel or the opposite beam, so that the composite plate 11 can be located at the center between the two wall panels or the two beams. At this time, the lifting device can be directly started to drive the lifting frame 1 to descend, and the side positioning rods 163 will slide down along the side of the wall panel or the beam until the composite plate 11 is aligned with the wall. The upper ends of the plates or the upper ends of the beams are fitted together, so that the operator can quickly install the composite plates 11; and if the composite plates 11 are installed in the center of the building, the rotating rod 16 close to the direction of the installed composite plates 11 can be adjusted to adjust the distance between the two composite plates 11. Because in the installation of the composite plates 11, a joint width needs to be reserved between the installations of adjacent composite plates 11. The device observes the distance between the composite plate 11 being hoisted and the positioning rod 163 in the direction of the installed composite plate 11 through the adjustment ruler 264. During installation, the positioning rod 163 close to the direction of the installed composite plate 11 is close to the side of the installed composite plate 11, which can quickly and accurately adjust the distance between the two composite plates 11, thereby improving the efficiency of the initial installation of the composite plates 11.

[0045] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A composite slab construction hoisting device, characterized in that: It includes a lifting frame, which includes two longitudinal beams arranged parallel to each other and two transverse beams arranged parallel to each other. The two transverse beams are respectively fixed between the two longitudinal beams to form a rectangular frame matching the size of the composite plate unit. A lifting device and a positioning device are installed on the lifting frame. The lifting device is installed on the opposite side of the two longitudinal beams. The lifting device includes a winding assembly and a lifting assembly. The lifting assemblies are symmetrically arranged on both sides of the winding assembly. The winding assembly is provided with two output ends. The lifting assemblies on both sides are respectively driven by the output ends on both sides of the winding assembly. The positioning device is used to position the composite plate.

2. A composite slab construction hoisting device according to claim 1, characterized in that: The lifting assembly includes a guide wheel, a fixed pulley and a movable pulley, the movable pulley is arranged between the guide wheel and the fixed pulley, the guide wheel and the fixed pulley are fixedly mounted on the inner side of the longitudinal beam to form a pulley mechanism with the movable pulley, one end of the lifting rope is fixed on the end side of the longitudinal beam, and the other end passes through the guide wheel, the movable pulley and the fixed pulley in sequence and is connected to the output end on the same side of the winding assembly, and the lower end of the movable pulley is equipped with a hook for hooking the truss on the upper side of the composite plate.

3. The composite slab construction hoisting device according to claim 1, characterized in that: A receiving block is fixed on both sides of the longitudinal beam at the position of the movable pulley. The receiving block is located at the center between the guide wheel and the fixed pulley. A receiving groove matching the upper side of the movable pulley is opened at the bottom of the receiving block, and the movable pulley is limited by the receiving groove.

4. The composite slab construction hoisting device according to claim 1, characterized in that: The winding assembly includes a servo motor and two symmetrically arranged winding rollers. The servo motor is fixedly mounted on the longitudinal beam. The two winding rollers are rotatably mounted on the inner side of the longitudinal beam. The two winding rollers are respectively located on both sides of the servo motor and are matched with the winding assemblies on both sides. The two winding rollers are respectively fixedly connected to the ends of the lifting ropes on the same side. The two winding rollers are both transmission-connected to the output end of the servo motor, and the two winding rollers are driven by the servo motor.

5. The composite slab construction hoisting device according to claim 1, characterized in that: The movable pulley is rotatably transferred in the pulley bracket, the bottoms of the two side plates of the pulley bracket are respectively equipped with assembly ears and fixed ears, and the hook is rotatably assembled between the assembly ears and the fixed ears.

6. A composite slab construction hoisting device according to claim 5, characterized in that: The fixed ear is fixedly connected to one side plate of the pulley bracket, the assembly ear is hinged to the other side plate of the pulley bracket, one side of the hook is rotatably matched with the fixed ear through a rotating shaft and a bearing, and a pin shaft coaxially arranged with the rotating shaft is provided on the other side of the hook. A through groove matching the size of the pin shaft is opened on the assembly ear at a position corresponding to the pin shaft. When the assembly ear is rotated downward for assembly, the pin shaft can be rotated into the through groove.

7. The composite slab construction hoisting device according to claim 1, characterized in that: The positioning device comprises two groups of transverse positioning assemblies installed on the longitudinal beam and two groups of longitudinal positioning assemblies installed on the transverse beam. The transverse positioning assemblies and the longitudinal positioning assemblies have the same structure and both include a rotating rod, an L-shaped receiving plate and a positioning rod. A plurality of rotating rods are rotatably arranged between the two longitudinal beams and between the two transverse beams. The two ends of the rotating rod extend from the outer sides of the longitudinal beam and the transverse beam respectively, and threads are provided on the extended ends to form threaded sections, and the threads of the threaded sections at the two ends of the rotating rod are opposite. The threaded sections at the two ends of the rotating rod are threadedly connected with vertically arranged positioning rods. An L-shaped receiving plate is fixed on the longitudinal beam and the transverse beam and on the extended ends of the rotating rod. The end of the threaded section of the rotating rod is rotatably transferred to the L-shaped receiving plate, and the rotating rod extends from the outer side of the L-shaped receiving plate to form a control end. An adjusting handle for facilitating the rotation of the rotating rod is installed on the control end of the rotating rod. Guide rods parallel to the rotating rods are also fixed on the longitudinal beam and the transverse beam in the L-shaped receiving plate, and the positioning rod is slidably connected to the guide rod.

8. The composite slab construction hoisting device according to claim 7, characterized in that: A locking device for locking the rotating rod is also installed on the L-shaped connecting plate, and the locking device includes a horizontal plate fixed on the L-shaped connecting plate and a pin hole arranged on the control end of the rotating rod. The horizontal plate is provided with a slot corresponding to the position and size of the pin hole, and the position of the rotating rod is locked by a pin inserted in the slot and the pin hole.

9. The composite slab construction hoisting device according to claim 7, characterized in that: An adjusting ruler is also fixed at the lower end of the L-shaped receiving plate, and the adjusting ruler is arranged parallel to the rotating rod.

10. A method for hoisting a composite slab using the composite slab hoisting device according to any one of claims 1 to 9, characterized in that: The lifting steps include the following: S1: Lift the lifting rope by the lifting device to lift the lifting frame, then move the lifting frame to the top of the composite plate to be lifted by the lifting device, and use the hook on the lower side of the movable pulley to hang the steel bar on the upper side of the composite plate; S2: The lifting device moves the composite board to the top of the position to be installed, so that the positioning device is close to the pre-installed wooden board or the side of the floor slab at the installation location, and the position of the composite board is pre-positioned by the positioning device. Then the servo motor is started to slowly lower the composite board, and finally the operator removes the hook.

Images