Composite floor slab hoisting method and positioning hoisting equipment

Abstract

The invention discloses a composite floor slab hoisting method, and relates to the field of house construction, and the composite floor slab hoisting method comprises the following steps: starting a crane, upwards hoisting a main body frame through a connecting point of the crane and the middle position of the main body frame, and detecting the inclination state of the main body frame by using gradienters preset at the bottoms of two long edges of the main body frame. A screw rod driving motor module on a mounting seat is started; the screw driving motor module drives the telescopic screw to move upwards to drive the corresponding lifting seat and the lifting rope to ascend synchronously, so that the height of the inclined corner is adjusted step by step; the inclination position and deviation amplitude of the floor slab can be positioned in real time through the gradienter; the screw driving motor module drives the telescopic screw, so that the hoisting height of the inclined corner can be adjusted, the parallelism of the four corners of the floor slab can be quickly corrected to a preset range, the problem that a traditional method depends on manual adjustment is solved, and it is ensured that the horizontal posture in the floor slab hoisting process meets the installation requirement.

Description

Technical Field

[0001] This application relates to the field of building construction technology, specifically to a method for hoisting composite floor slabs and a positioning hoisting device. Background Technology

[0002] In the construction of prefabricated building composite floor slabs, the traditional hoisting method mainly involves crane lifting and manual adjustment. The crane is connected to the middle position of the hoisting frame. After lifting, the floor slab is prone to tilting along with the frame due to uneven force at the lifting points and differences in the self-weight distribution of the floor slab. If the tilt is adjusted by manual visual inspection or simple tools, it is impossible to quickly correct the posture of the floor slab, which directly affects the installation of the composite floor slab. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this application provides a method for hoisting composite floor slabs, which solves the technical problem of maintaining the balance of floor slabs during hoisting.

[0004] This application provides a method for hoisting composite floor slabs, including the following steps: Fix the main frame of the positioning and hoisting equipment under the crane, ensuring that the main frame is placed horizontally. Check that the two parallel sliding grooves on the main frame are free of debris to ensure smooth movement of the drive. Based on the four lifting points of the composite floor slab to be lifted, at least four actuators are moved along the slide to the preset positions of the corresponding lifting points to ensure that the actuators are securely connected to the slide and that the mounting bases of each actuator are at the same horizontal height. Prepare suitable hoisting ropes, and align one end of each rope with the four corner hoisting points of the composite floor slab and securely tie them together. Connect the other end of each hoisting rope to the hoisting base under the mounting base of the corresponding driver. The hoisting base is connected to the end of the telescopic screw of the screw drive motor module to ensure that the hoisting rope is taut and the connection is reliable, and to prevent it from falling off during hoisting. Start the crane and lift the main frame upwards through the connection point between the crane and the main frame in the middle. At the same time, lift the composite floor slabs off the ground and lift them to the preset initial height. Stop the lifting operation after the height is 0.5-1 meter away from the ground. Observe the initial posture of the composite floor slab. Since the crane is connected to the main frame at the middle position, if the composite floor slab is not hoisted in an ideal position, it will tilt along with the main frame. Using the level instruments pre-installed at the bottom of the two long sides of the main frame, the tilt of the main frame is detected to determine which corner of the main frame is tilted downwards; The system monitors the data of the four corners of the composite floor slab and the main frame in real time, and synchronously feeds back the level test results to the control terminal to accurately locate the tilted corners and the degree of deviation. Based on the tilt data fed back by the control terminal, the screw drive motor module on the mounting base of the driver corresponding to the downward tilting corner is activated. The screw drive motor module drives the telescopic screw to move upward, causing the corresponding lifting seat and lifting rope to rise synchronously, gradually adjusting the height of the tilt angle; The level of the main frame is continuously monitored using a level until the parallelism of the four corners of the stacked floor slabs is within the preset range, thus completing the floor slab lifting and balancing operation. Maintaining the balanced posture of the composite floor slabs, start the crane to move the main frame horizontally to the preset installation position; When the composite floor slab is moved directly above the installation position, the telescopic screws of each screw drive motor module are gradually controlled to extend downwards synchronously, slowly lowering the composite floor slab to the preset installation elevation to complete the precise placement. After the composite floor slab is installed and fixed, disconnect the hoisting rope from the floor slab lifting point, start the screw drive motor module to retract the telescopic screw upward, and drive the hoisting base to reset; Control each driver to move along the slide to the initial preset position, and turn off the screw drive motor module; Clean and inspect the components of the positioning and hoisting equipment, such as the chute, drive unit, and hoisting base, to prepare for the hoisting of the next composite floor slab.

[0005] This application provides a positioning and hoisting device, the positioning and hoisting device comprising: The main frame has two parallel sliding grooves. A driver, disposed on the main frame and movably connected in a slide, comprises at least four drivers, with at least one driver disposed at each of the opposite ends of each slide. Mounting bracket, mounted on the driver; A screw drive motor module is mounted on the mounting base, and the telescopic screw of the screw drive motor module passes through the mounting base and extends to the bottom of the mounting base; A lifting base is attached to the end of the telescopic screw. A level, mounted on the main frame, is used to detect the levelness of the main frame.

[0006] In the positioning and hoisting equipment provided in this application, the main frame includes a rectangular frame and reinforcing ribs. The reinforcing ribs are connected to the inner side of the rectangular frame. The sliding grooves are respectively arranged on the long side of the rectangular frame. The two ends of the mounting base extend to the opposite sides of the long side of the rectangular frame. The telescopic screw is located at the end of the mounting base and outside the rectangular frame.

[0007] In the positioning and hoisting equipment provided in this application, the screw drive motor module includes two units, which are respectively disposed at opposite ends of the mounting base.

[0008] In the positioning and hoisting equipment provided in this application, the screw drive motor module includes a through-type lead screw stepper motor.

[0009] In the positioning and hoisting equipment provided in this application, extension sections are inserted at both ends of the long side of the rectangular frame. The extension sections are connected to the slide rail of the rectangular frame. An extension drive motor is connected to the bottom surface of the long side of the rectangular frame. A gear is connected to the rotating shaft of the extension drive motor. A drive tooth groove is opened on the bottom surface of the extension section. A drive port is provided at the bottom of the rectangular frame corresponding to the extension section. The extension drive motor is driven and connected to the extension section through the drive port. The extension section is located exactly at the center of both ends of the long side of the rectangular frame. The extension section can extend away from the long side of the rectangular frame, thereby increasing the length of the long side of the rectangular frame. An extension groove is provided on the top surface of the extension section. The extension groove is correspondingly arranged with the slide rail, so that the driver can move from the slide rail to the extension groove.

[0010] In the positioning and hoisting equipment provided in this application, the side of the driver is also provided with a supporting mechanism, and the top surface of the long side of the rectangular frame is also provided with a first auxiliary groove. The supporting mechanism can abut against the first auxiliary groove to increase the moving resistance of the driver and limit the movement of the driver. The first auxiliary groove is provided on one side of the slide.

[0011] In the positioning and hoisting equipment provided in this application, the extension section is provided with a second auxiliary groove, the second auxiliary groove is positioned corresponding to the first auxiliary groove, the second auxiliary groove is located on one side of the extension groove, and auxiliary blocks are slidably connected in the first auxiliary groove and the second auxiliary groove. When the driver moves in the slide groove, the abutting mechanism can be inserted into the first auxiliary block in the first auxiliary groove. When the driver moves to the edge of the slide groove near the extension groove, the abutting mechanism can be moved out from the first auxiliary block in the first auxiliary groove and inserted into the second auxiliary block in the second auxiliary groove. The driver moves into the extension groove by the limiting of the second auxiliary block. When the driver moves in the extension groove, the abutting mechanism can be inserted into the second auxiliary block in the second auxiliary groove.

[0012] In the positioning and hoisting equipment provided in this application, the supporting mechanism includes a supporting motor and a fixed frame. The fixed frame is connected to the side of the driver, and the supporting motor is connected to the fixed frame. The supporting motor is inclined downward.

[0013] In the positioning and hoisting equipment provided in this application, the supporting mechanism includes two parts, which are respectively arranged on opposite sides of the driver.

[0014] The composite floor slab hoisting method provided in this application involves fixing the main frame of the positioning hoisting equipment below the crane, ensuring the main frame is placed horizontally, and checking that the two parallel sliding grooves on the main frame are free of obstructions to ensure smooth movement of the actuators. Based on the four hoisting points of the composite floor slab to be hoisted, at least four actuators are moved along the sliding grooves to the preset positions of the corresponding hoisting points, ensuring a secure connection between the actuators and the sliding grooves, and that the mounting bases of each actuator are at the same horizontal height. Suitable hoisting ropes are prepared, and one end of each rope is securely tied to one of the four corner hoisting points of the composite floor slab. The other end of each rope is connected to the hoisting base below the mounting base of the corresponding actuator. The hoisting base is connected to the end of the telescopic screw of the screw drive motor module, ensuring the ropes are taut and reliably connected to prevent them from falling off during hoisting. Start the crane and lift the main frame upwards through the connection point between the crane and the main frame, simultaneously lifting the composite floor slab off the ground. Lift to the preset initial height, 0.5-1 meter above the ground, then pause the lifting operation. Observe the initial posture of the composite floor slab. Due to the connection point between the crane and the main frame, if the composite floor slab's lifting position is not ideal, it will tilt along with the main frame. Use the levels pre-installed at the bottom of the two long sides of the main frame to detect the tilt state of the main frame and determine which corner is tilting downwards. Monitor the data of the four corners of the composite floor slab relative to the main frame in real time, and synchronously feed the level detection results back to the control terminal to accurately locate the tilt corners and the degree of deviation. Based on the tilt data fed back from the control terminal, activate the screw drive motor module on the mounting base of the actuator corresponding to the downward tilting corner. The screw drive motor module drives the telescopic screw to move upwards, causing the corresponding lifting base and lifting rope to rise synchronously, gradually adjusting the height of the tilt corner. Continuously monitor the level status of the main frame using the levels until the parallelism of the four corners of the composite floor slab is within the preset range, completing the floor slab lifting and balancing operation. Maintaining the balanced posture of the composite floor slab, start the crane to move the main frame horizontally towards the preset installation position. When the composite floor slab is directly above the installation position, gradually control the telescopic screws of each screw drive motor module to extend downwards synchronously, slowly lowering the composite floor slab to the preset installation elevation for precise placement. After the composite floor slab is installed and fixed, disconnect the lifting ropes from the floor slab lifting points, start the screw drive motor module to retract the telescopic screws upwards, and drive the lifting seat to reset. Control each actuator to move along the slide to the initial preset position, and shut down the screw drive motor module. Clean and inspect the slide, actuators, lifting seat, and other components of the positioning and lifting equipment to prepare for the lifting operation of the next composite floor slab.

[0015] The level instrument can locate the tilt position and deviation of the floor slab in real time; in conjunction with the screw drive motor module to drive the telescopic screw, the hoisting height of the tilt corner can be adjusted, and the parallelism of the four corners of the floor slab can be quickly corrected to the preset range. This solves the problem of relying on manual adjustment in traditional methods and ensures that the horizontal posture of the floor slab meets the installation requirements during the hoisting process.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the positioning and hoisting equipment described in this application. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the positioning and hoisting equipment described in this application. Figure 2 ; Figure 3 yes Figure 1 A magnified schematic diagram of the structure of part A in the diagram; Figure 4 yes Figure 1 A magnified schematic diagram of part B.

[0019] Figure label: 10. Main frame; 11. Slide rail; 12. Driver; 13. Mounting base; 14. Screw drive motor module; 15. Lifting base; 16. Rectangular frame; 17. Reinforcing rib; 20. Extension section; 21. Extension slot; 22. Extension drive motor; 30. First auxiliary slot; 31. Second auxiliary slot; 32. First auxiliary block; 33. Second auxiliary block; 34. Motor support; 35. Fixing frame. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0022] It should be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0023] It should be understood that, in order to clearly describe the technical solutions of the embodiments of this application, the terms "first" and "second" are used in the embodiments of this application to distinguish identical or similar items with essentially the same function and effect. For example, the first groove and the second groove are only used to distinguish different grooves and do not limit their order. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and the terms "first" and "second" are not necessarily different.

[0024] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0025] refer to Figures 1-4 This application provides a method for hoisting composite floor slabs, which includes the following steps: fixing the main frame 10 of the positioning hoisting equipment below the hoist, ensuring that the main frame 10 is placed horizontally, checking that the two parallel sliding grooves 11 provided on the main frame 10 are free of debris, and ensuring that the drive 12 moves smoothly. According to the four lifting point positions of the composite floor slab to be lifted, at least four actuators 12 are moved along the slide 11 to the preset position of the corresponding lifting point to ensure that the actuators 12 are firmly connected to the slide 11 and that the mounting bases 13 of each actuator 12 are at the same horizontal height. Prepare suitable hoisting ropes, and align one end of each rope with the four corner hoisting points of the composite floor slab and securely tie them together. The other end of each hoisting rope is connected to the hoisting seat 15 below the mounting base 13 of the corresponding driver 12. The hoisting seat 15 is connected to the end of the telescopic screw of the screw drive motor module 14 to ensure that the hoisting rope is taut and the connection is reliable, and to prevent it from falling off during hoisting. Start the crane and lift the main frame 10 upward through the connection point between the crane and the middle position of the main frame 10. At the same time, lift the composite floor slab off the ground and lift it to the preset initial height. Stop the lifting action after it is 0.5-1 meter away from the ground. Observe the initial posture of the composite floor slab. Since the crane is connected to the main frame 10 at the middle position, if the composite floor slab is not hoisted in an ideal position, it will tilt along with the main frame 10. Using the level instruments pre-installed at the bottom of the two long sides of the main frame 10, the tilt state of the main frame 10 is detected to determine which corner of the main frame 10 tilts downward. The system monitors the data of the four corners of the composite floor slab and the main frame 10 in real time, and synchronously feeds back the level test results to the control terminal to accurately locate the tilted corners and the degree of deviation. Based on the tilt data fed back by the control terminal, the screw drive motor module 14 on the mounting base 13 is activated for the driver 12 corresponding to the downward tilting corner. The screw drive motor module 14 drives the telescopic screw to move upward, which in turn causes the corresponding hoisting seat 15 and hoisting rope to rise synchronously, gradually adjusting the height of the tilt angle. The level of the main frame 10 is continuously monitored using a level until the parallelism of the four corners of the stacked floor slabs is within the preset range, thus completing the floor slab lifting and balancing operation. Maintaining the balanced posture of the composite floor slabs, start the crane to move the main frame 10 to the preset installation position; When the composite floor slab is moved directly above the installation position, the telescopic screws of each screw drive motor module 14 are gradually controlled to extend downwards synchronously, so that the composite floor slab is slowly lowered to the preset installation elevation, thus completing the precise placement. After the composite floor slab is installed and fixed, disconnect the hoisting rope from the floor slab hoisting point, start the screw drive motor module 14 to retract the telescopic screw upward, and drive the hoisting base 15 to reset; Control each driver 12 to move along the slide 11 to the initial preset position, and turn off the screw drive motor module 14; Clean and inspect the components of the positioning and hoisting equipment, such as the slide 11, driver 12, and hoisting base 15, to prepare for the hoisting operation of the next composite floor slab.

[0026] In this embodiment, the tilt position and deviation of the floor slab can be located in real time using a level; in conjunction with the screw drive motor module 14 driving the telescopic screws, the hoisting height of the tilted corners can be adjusted, and the parallelism of the four corners of the floor slab can be quickly corrected to the preset range, solving the problem of relying on manual adjustment in traditional methods and ensuring that the horizontal posture of the floor slab meets the installation requirements during the hoisting process.

[0027] This application provides a positioning and hoisting device, which includes: The main frame 10 is provided with two parallel sliding grooves 11; A driver 12 is disposed on the main frame 10 and movably connected in the slide 11. At least four drivers 12 are provided, with at least one driver 12 disposed at each of the opposite ends of each slide 11. Mounting bracket 13 is mounted on drive 12; The screw drive motor module 14 is mounted on the mounting base 13. The telescopic screw of the screw drive motor module 14 passes through the mounting base 13 and extends to the bottom of the mounting base 13. The lifting base 15 is connected to the end of the telescopic screw; A level is installed on the main frame 10 to detect the levelness of the main frame 10.

[0028] When hoisting the floor slab, first, the driver 12 is moved to the corresponding slide 11 position of its respective hoisting point. Then, the four hoisting points of the floor slab are connected to one end of the hoisting rope, and the other end of the rope is connected to the hoisting seat 15. The main frame 10 is then hoisted by the crane. After the floor slab is hoisted, its posture in the air is determined. At this point, because the crane is connected to the main frame 10 at the middle position, if the floor slab's hoisting position is not ideal, the floor slab will tilt along with the main frame 10. A level is used to determine which side of the floor slab is tilting downwards. The level is set at the bottom of the two long sides of the main frame 10, allowing the test to determine which of the four corners of the main frame 10 is tilted. Then, the screw drive motor module 14 drives the telescopic screw to move the hoisting seat 15 upwards, making that corner of the floor slab relatively parallel to the other corners. It should be noted that the parallelism of the four corners of the floor slab has a predetermined range; within this range, they are considered relatively parallel. This completes the hoisting and balancing operation of the floor slab, and the hoisting of the floor slab continues.

[0029] Both the actuator 12 and the level are existing structures. The actuator 12 has a built-in drive motor and a roller at its bottom that can roll within a slide groove 11. The built-in drive motor drives the roller to roll within the slide groove 11. The slide groove 11 can be made deeper, and the roller can be made larger. Ideally, about half of the roller's depth should be within the slide groove 11 to prevent it from easily falling off. During hoisting, the floor slab can exert a downward force on the actuator 12, making it stable. A locking structure can also be installed on the actuator 12, using existing structures. For example, the locking structure could be a locking motor and a locking friction block. The locking motor drives the locking friction block to press against the main frame 10, using friction to lock the actuator 12, or a locking structure can be used within the actuator 12.

[0030] The bottom of the hoisting base 15 is equipped with lifting lugs for hanging hoisting ropes.

[0031] In some embodiments, the main frame 10 includes a rectangular frame 16 and a reinforcing rib 17. The reinforcing rib 17 is connected to the inner side of the rectangular frame 16. Slide grooves 11 are respectively provided on the long side of the rectangular frame 16. The two ends of the mounting base 13 extend to the opposite sides of the long side of the rectangular frame 16. The telescopic screw is located at the end of the mounting base 13 and outside the rectangular frame 16.

[0032] The screw drive motor module 14 includes two units, which are respectively disposed at opposite ends of the mounting base 13.

[0033] The screw drive motor module 14 includes a through-type lead screw stepper motor.

[0034] In scenarios involving floor slab hoisting with direct-connected hoisting ropes, a through-type lead screw stepper motor is chosen. Compared to ordinary motors, it features a built-in mechanical self-locking mechanism after power failure, locking the hoisting ropes to prevent the floor slab from falling. No additional brakes are needed, whereas ordinary motors, which lose torque upon power failure, rely on external brakes, resulting in low safety redundancy. At the low-speed range required for hoisting, its torque is stable without slippage, adapting to the required lifting and lowering speeds.

[0035] Extension sections 20 are inserted at both ends of the long side of the rectangular frame 16. The extension sections 20 are connected to the slide rails of the rectangular frame 16. An extension drive motor 22 is connected to the bottom surface of the long side of the rectangular frame 16. A gear is connected to the rotating shaft of the extension drive motor 22. A drive tooth groove is opened on the bottom surface of the extension section 20. A drive port is provided at the bottom of the rectangular frame 16 corresponding to the extension section 20. The extension drive motor 22 is connected to the extension section 20 through the drive port. The extension section 20 is located exactly at the center of both ends of the long side of the rectangular frame 16. The extension section 20 can extend away from the long side of the rectangular frame 16, thereby increasing the length of the long side of the rectangular frame 16. An extension groove 21 is provided on the top surface of the extension section 20. The extension groove 21 is correspondingly set with the slide rail 11, so that the driver 12 can move from the slide rail 11 into the extension groove 21.

[0036] The extension drive motor 22 can drive the extension section 20 to extend out of the rectangular frame 16, extending the length of the long side of the rectangular frame 16, so that the driver 12 can move onto the extension section 20, increasing the spacing between the drivers 12, allowing the equipment to lift longer floor slabs. The rollers of the driver 12 can roll from the slide 11 into the extension groove 21, which extends to the edge of the rectangular frame 16. When the extension groove 21 extends, it aligns perfectly with the slide 11. There is a step between the long side of the rectangular frame 16 and the extension section 20. The extension section 20 is positioned in the middle of the long side of the rectangular frame 16, resulting in a good connection rigidity between the extension section 20 and the rectangular frame 16.

[0037] The side of the driver 12 is also provided with a holding mechanism, and the top surface of the long side of the rectangular frame 16 is also provided with a first auxiliary groove 30. The holding mechanism can hold into the first auxiliary groove 30 to increase the moving resistance of the driver 12 and limit the movement of the driver 12. The first auxiliary groove 30 is provided on one side of the slide 11.

[0038] The extension section is provided with a second auxiliary groove 31, which corresponds to the position of the first auxiliary groove 30. The second auxiliary groove 31 is located on one side of the extension groove 21. An auxiliary block is slidably connected in the first auxiliary groove 30 and the second auxiliary groove 31. When the driver 12 moves in the slide groove 11, the holding mechanism can be inserted into the first auxiliary block 32 in the first auxiliary groove 30. When the driver 12 moves to the edge of the slide groove 11 near the extension groove 21, the holding mechanism can be moved out from the first auxiliary block 32 in the first auxiliary groove 30 and inserted into the second auxiliary block 33 in the second auxiliary groove 31. The driver 12 moves into the extension groove 21 by the limiting of the second auxiliary block 33. When the driver 12 moves in the extension groove 21, the holding mechanism can be inserted into the second auxiliary block 33 in the second auxiliary groove 31.

[0039] The supporting mechanism includes a supporting motor 34 and a fixing frame 35. The fixing frame 35 is connected to the side of the driver 12, and the supporting motor 34 is connected to the fixing frame 35. The supporting motor 34 is inclined downward.

[0040] The abutment mechanism comprises two parts, which are respectively located on opposite sides of the driver 12.

[0041] In this embodiment, when the driver 12 moves within the slide groove 11, the holding mechanism can be inserted into the first auxiliary block 32 within the first auxiliary groove 30. When the driver 12 moves to the edge of the slide groove 11 near the extension groove 21, the holding mechanism can move out of the first auxiliary block 32 within the first auxiliary groove 30 and be inserted into the second auxiliary block 33 within the second auxiliary groove 31. The driver 12 moves into the extension groove 21 by the limiting action of the second auxiliary block 33. When the driver 12 moves within the extension groove 21, the holding mechanism can be inserted into the second auxiliary block 33 within the second auxiliary groove 31. Through the above steps, the driver 12 is limited in its movement within the slide groove 11. When the driver 12 moves from the slide groove 11... During the movement of the drive 12 to the extension slot 21, the drive 12 obtains guiding support through the holding mechanism, so that when the drive 12 moves through the steps of the extension section 20 and the rectangular frame 16 encountered during the movement from the slide 11 to the extension slot 21, the drive 12 moves stably and can move autonomously. This can be achieved through predetermined control, such as PLC. The control steps can be implemented using existing technology. The working positions of the first auxiliary block 32 and the second auxiliary block 33 are based on manual operation by the user. For example, during docking, the second auxiliary block 33 is moved to a position close to the slide 11, and the holding motor 34 is moved to the edge of the rectangular frame 16. The holding motor 34 can be inserted into the second auxiliary block 33 by extending downward at an angle.

[0042] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for hoisting composite floor slabs, characterized in that, include: Fix the main frame of the positioning and hoisting equipment under the crane, ensuring that the main frame is placed horizontally, and check that the two parallel sliding grooves on the main frame are free of debris. Based on the four lifting points of the composite floor slab to be lifted, at least four actuators are moved along the slide to the preset positions of the corresponding lifting points, and the mounting bases of each actuator are at the same horizontal height. Prepare suitable hoisting ropes, and align one end of each rope with the four corner hoisting points of the composite floor slab and securely tie them together. The other end of each hoisting rope is connected to the hoisting base under the mounting base of the corresponding driver. The hoisting base is connected to the end of the telescopic screw of the screw drive motor module. Start the crane and lift the main frame upwards through the connection point between the crane and the main frame in the middle, simultaneously lifting the composite floor slabs off the ground to the preset initial height; Using the level instruments pre-installed at the bottom of the two long sides of the main frame, the tilt of the main frame is detected to determine which corner of the main frame is tilted downwards; Real-time monitoring of the data at the four corners of the composite floor slab and the main frame, synchronously feeding back the level test results to the control terminal, accurately locating the tilted corners and the degree of deviation; Based on the tilt data fed back by the control terminal, the screw drive motor module on the mounting base of the driver corresponding to the downward tilting corner is activated. The screw drive motor module drives the telescopic screw to move upward, causing the corresponding lifting seat and lifting rope to rise synchronously, gradually adjusting the height of the tilt angle; The horizontal status of the main frame is continuously monitored using a level until the parallelism of the four corners of the composite floor slab is within the preset range, thus completing the floor slab lifting and balancing operation. Maintaining the balanced posture of the composite floor slabs, start the crane to move the main frame horizontally to the preset installation position; When the composite floor slab is moved directly above the installation position, the telescopic screws of each screw drive motor module are gradually controlled to extend downwards synchronously, and the composite floor slab is slowly lowered to the preset installation elevation to complete the precise placement. After the composite floor slab is installed and fixed, disconnect the hoisting rope from the floor slab lifting point, start the screw drive motor module to retract the telescopic screw upward, and drive the hoisting base to reset; Control each driver to move along the slide to the initial preset position, and turn off the screw drive motor module; Clean and inspect the components of the positioning and hoisting equipment, such as the chute, drive unit, and hoisting base, to prepare for the hoisting of the next composite floor slab.

2. A positioning and hoisting device, applied to the composite floor slab hoisting method described in claim 1, characterized in that, The positioning and hoisting equipment includes: The main frame has two parallel sliding grooves. A driver, disposed on the main frame and movably connected in a slide, comprises at least four drivers, with at least one driver disposed at each of the opposite ends of each slide. Mounting bracket, mounted on the driver; A screw drive motor module is mounted on the mounting base, and the telescopic screw of the screw drive motor module passes through the mounting base and extends to the bottom of the mounting base; A lifting base is attached to the end of the telescopic screw. A level, mounted on the main frame, is used to detect the levelness of the main frame.

3. The positioning and hoisting equipment according to claim 2, characterized in that, The main frame includes a rectangular frame and reinforcing ribs. The reinforcing ribs are connected to the inner side of the rectangular frame. The sliding grooves are respectively set on the long side of the rectangular frame. The two ends of the mounting base extend to the opposite sides of the long side of the rectangular frame. The telescopic screw is located at the end of the mounting base and outside the rectangular frame.

4. The positioning and hoisting equipment according to claim 3, characterized in that, The screw drive motor module comprises two units, which are respectively disposed at opposite ends of the mounting base.

5. The positioning and hoisting equipment according to claim 2, characterized in that, The screw drive motor module includes a through-type lead screw stepper motor.

6. The positioning and hoisting equipment according to claim 3, characterized in that, The rectangular frame has extension sections inserted at both ends of its long side. The extension sections are connected to the slide rails of the rectangular frame. An extension drive motor is connected to the bottom surface of the long side of the rectangular frame. A gear is connected to the rotating shaft of the extension drive motor. A drive tooth groove is formed on the bottom surface of the extension section. A drive port is provided at the bottom of the rectangular frame corresponding to the extension section. The extension drive motor is driven by the extension section through the drive port. The extension section is located exactly at the center of both ends of the long side of the rectangular frame. The extension section can extend away from the long side of the rectangular frame, thereby increasing the length of the long side of the rectangular frame. An extension groove is provided on the top surface of the extension section. The extension groove is correspondingly set to the slide rail, so that the driver can move from the slide rail to the extension groove.

7. The positioning and hoisting equipment according to claim 6, characterized in that, The side of the driver is also provided with a supporting mechanism, and the top surface of the long side of the rectangular frame is also provided with a first auxiliary groove. The supporting mechanism can abut against the first auxiliary groove to increase the moving resistance of the driver and limit the movement of the driver. The first auxiliary groove is provided on one side of the slide.

8. The positioning and hoisting equipment according to claim 7, characterized in that, The extension section is provided with a second auxiliary groove, which corresponds to the position of the first auxiliary groove. The second auxiliary groove is located on one side of the extension groove. An auxiliary block is slidably connected in the first and second auxiliary grooves. When the driver moves in the slide groove, the abutting mechanism can be inserted into the first auxiliary block in the first auxiliary groove. When the driver moves to the edge of the slide groove near the extension groove, the abutting mechanism can be moved out from the first auxiliary block in the first auxiliary groove and inserted into the second auxiliary block in the second auxiliary groove. The driver moves into the extension groove by the limiting of the second auxiliary block. When the driver moves in the extension groove, the abutting mechanism can be inserted into the second auxiliary block in the second auxiliary groove.

9. The positioning and hoisting equipment according to claim 7, characterized in that, The supporting mechanism includes a supporting motor and a fixed frame. The fixed frame is connected to the side of the driver, and the supporting motor is connected to the fixed frame. The supporting motor is inclined downward.

10. The positioning and hoisting equipment according to claim 7, characterized in that, The abutment mechanism comprises two parts, which are respectively disposed on opposite sides of the driver.

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