LU503549B1

LU503549B1 - A hoisting device for laminated slab and its hoisting method

Info

Publication number: LU503549B1
Application number: LU503549A
Authority: LU
Inventors: Ning Yang
Original assignee: Jiangsu Vocational Inst Architectural Tech
Priority date: 2022-06-28
Filing date: 2023-02-28
Publication date: 2023-08-28
Also published as: CN114988269A

Abstract

The invention discloses a hoisting device for laminated slab and its hoisting method, which comprises a lifting box, a plurality of clamping hanging plates, a clamping mechanism and an auxiliary fastening mechanism. The device can adjust the length of the wire rope through the motor to control the tilt angle of the laminated floor. The wire rope can limit the movement of the clamping mechanism during lifting to ensure the lifting safety. The clamping hanging plate is fixed at six points on the laminated floor to ensure the stability of lifting; During lifting, the auxiliary fastening mechanism can clamp and reinforce the bolts again through the auxiliary lifting rope to prevent them from loosening. The upper splint and bottom plate of the clamping hanging plate are equipped with anti-slip bulges to increase the friction between the clamping hanging plate and the laminated floor to prevent it from slipping.

Description

A hoisting device for laminated slab and its hoisting method

Technical field

The invention relates to the technical field of auxiliary lifting devices, in particular to a lifting device for laminated slabs and a lifting method thereof.

Background technology

The laminated slab is a fabricated monolithic slab composed of precast slabs and cast-in-place reinforced concrete. The laminated slab has good integrity and high stiffness, which can save formwork. The upper and lower surfaces of the slab are flat, which is convenient for finishing layer decoration. It is suitable for high-rise buildings and large bay buildings with high requirements for overall stiffness.

The prefabricated laminated slab lifting devices in the prior art are all integral structures, resulting in poor applicability and low compatibility of the equipment. Although the four corners of the laminated slab can be fixed and lifted, it is still not firm enough, which will cause shaking during installation and affect the use effect. Moreover, the four corners still have the risk of separation and sliding after being fixed, so it cannot be guaranteed that the fixed points are still firm during lifting. Moreover, after lifting, the angle of the laminated slab cannot be adjusted, and only its position can be moved, which is cumbersome during assembly.

The patent document CN113120744A refers to a lifting tool for anti falling trailer car processing. The supporting adjustment mechanism in the device supports the side connecting cable by fitting the movable wheel as a whole, and adjusts the moving angle between the side connecting cable and the movable flap mechanism by fitting the support position of the movable wheel. This knot is complex to make, and the clamping mode of the clamping device in the device is not reliable, which may lead to the risk of slipping and falling off.

Summary of the invention

The invention aims to provide a lifting device for laminated slabs with simple structure and convenient use, so as to solve the defects in the prior art.

In order to achieve the above purpose, the invention is realized by adopting the following technical scheme: a lifting device for laminated slab, which is used to clamp the auxiliary lifting laminated slab, including:

The bottom of the lifting box is a hollow structure, and a steel wire rope adjusting

’ LU503549 mechanism 1s fixedly installed in the hollow structure to tighten the steel wire rope and adjust the length of the steel wire rope so as to control the installation angle of the laminated slab;

À plurality of clamping hanging plates are fixed on the side of the laminated slab, the bottom of the clamping hanging plate 1s provided with a bottom plate, the bottom plate is fixed with a vertical plate, and the bottom plate at the back end of the vertical plate 1s fixed with a back plate; The back plate is fixedly connected with the steel wire rope;

The clamping mechanism 1s installed on the back plate and vertical plate to force the upper clamping plate in the clamping mechanism to produce longitudinal displacement and clamp and fix the laminated slab close to the bottom plate;

The auxiliary fastening mechanism is slidably installed on the back plate and fixedly connected with the steel wire rope. The mechanical action of the steel wire rope limits the movement of the clamping mechanism, so that the laminated slab is always clamped.

The steel wire rope adjusting mechanism comprises a motor and a main gear. One end of the lifting box is provided with a motor. The output end of the motor is fixed with a main gear.

Both sides of the main gear are meshed and connected with the first gear and the second gear respectively. The first gear, the second gear and the main gear are rotationally connected with the lifting box with a rotating shaft.

Each rotating shaft is fixed with two strands of steel wire rope. The fixed end of two strands of steel wire rope on the same rotating shaft is fixed in the middle of the rotating shaft. The winding direction of two strands of steel wire rope on the same rotating shaft is the same, and they are both wound outward from the middle without affecting each other; And the winding direction of the steel wire rope on the rotating shafts at both ends is opposite.

The hanging end of each wire rope is provided with two groups of hooks, including the main hanging rope and the auxiliary hanging rope. The auxiliary hanging rope is fixed on the main hanging rope, and the end of the auxiliary hanging rope is longer than the end of the main hanging rope.

The clamping mechanism comprises an upper clamp plate, a bolt, a chute and a push rod.

The vertical plate is provided with a chute, and the upper clamp plate is connected with the chute through the convex parts at both sides of the upper clamp plate; One end of the upper splint extends into the vertical plate, and one end face extending into the vertical plate is provided with a first inclined plane; The bolt is threaded and connected to the back plate, one end of the bolt passes through the back plate and extends into the vertical plate, and 1s rotationally connected with the push rod. The push rod 1s slidably connected inside the vertical plate. One end face of the push rod is oblique cut and butts against the first inclined plane. The upper end face of the bottom plate and the lower end face of the upper splint are both provided with anti-skid protrusions.

The auxiliary fastening mechanism comprises a third gear, a rack, an arc-shaped base and a connecting rod, and a third gear 1s coaxially fixed on the smooth surface at the front end of the bolt; The back of the back plate is provided with a slide rail, the slide rail is provided with a slide way, the rack is connected with the slide way through a slide, the rack is meshed with the third gear, and the upper end of the back plate is fixed with an arc base; The upper end of the rack is provided with a groove, the middle of the groove 1s fixed with a fixing rod, and the middle part of the connecting rod is rotationally connected with the arc base; One end of the connecting rod is a U-shaped splint, and the other end is a round buckle. The U-shaped splint clamps the fixed rod and is rotationally connected with it.

The upper end face of the lifting box is provided with a first lifting lug, and the upper end of the back plate is provided with a second lifting lug; The first lifting lug cooperates with the anti rotation hook of the hoist, and the second lifting lug cooperates with the main lifting rope; The auxiliary hanging rope and the round buckle are mutually matched.

A control module is electrically connected between the motor and the inside of the lifting box, and an infrared receiving circuit is also arranged inside the lifting box. The infrared receiving circuit is electrically connected with the remote controller and the control module.

According to the above lifting device for laminated slab, a better lifting method is provided: firstly, six plywood and clamping mechanism are used to clamp symmetrically on both sides of the laminated slab, and the bolts are rotated to tighten. The crane connects the lifting box through the hook and lifts the laminated slab. At this time, the length of the steel wire rope is adjusted by controlling the rotation direction of the motor, and then the tilt angle of the laminated slab is controlled to facilitate the installation of workers.

Specific steps: Step 1, the device is in place; First, put the device and crane in place, check ropes, machinery, etc., and do a good job of positioning and safety monitoring;

Step 2: clamp the laminated slab; First, clamp the six clamping hanging plates on both sides 209049 of the laminated slab through the clamping mechanism, and tighten the bolts at the front, middle and back six positions with a wrench;

Step 3: hook the lifting rope; Move the lifting box to the center of the laminated slab, hook the main lifting rope of the steel wire rope to the second crane through the hook, hook the auxiliary lifting rope to the round buckle through the hook, use the remote controller to control and drive the motor to set the length of the steel wire rope, and then hook the first lifting lug to the anti rotation hook of the crane;

Step 4: lifting, adjusting and placing; Use the crane to lift the laminated slab. At this time, the remote controller can control and drive the motor to adjust the length of the wire rope, that is, adjust the tilt angle of the laminated slab; Until the superimposed slab is adjusted to the proper position and placed at the specified position.

According to the above technical scheme, the invention has at least the following beneficial effects: 1. The device can adjust the length of the steel wire rope through the motor control, and the steel wire ropes on both sides are wound in opposite directions, so that the motor can control the extension and shortening of the steel wire rope after lifting the laminated slab. At this time, when the steel wire rope on one side of the rotating shaft is extended, the steel wire rope on the other side of the rotating shaft is shortened, that is, the angle behind the laminated slab can be adjusted, making the assembly more convenient. 2. The clamping hanging plate is fixed at six points at the front, middle and back on both sides of the laminated slab, which is more stable during lifting, and the clamping hanging plate is fixed at one time through the clamping mechanism; During hoisting, due to the cooperation between the auxiliary hoisting rope and the auxiliary fastening mechanism, the auxiliary fastening mechanism can clamp and reinforce the bolts again through the tension of the auxiliary hoisting rope, and prevent them from loosening. 3. The upper clamping plate and the bottom plate of the clamping hanging plate are both provided with anti-skid protrusions, which can increase the friction between the clamping hanging plate and the laminated slab to prevent it from sliding.

Description of attached drawings

Figure 1 is the main structure diagram of the lifting box of the lifting device for the laminated slab of the invention.

Figure 2 is a sectional view of the bottom of the lifting box of the lifting device of the laminated slabs of the invention.

Figure 3 is the main structure diagram of the clamping hanging plate of a lifting device for laminated slabs of the invention.

Figure 4 1s the isometric drawing of the clamping hanging plate of a lifting device for laminated slabs of the invention.

Figure 5 is a front view of a clamping hanging plate of a lifting device for a superimposed slab of the present invention.

Figure 6 is the A-A sectional view of Figure 5.

Figure 7 1s an enlarged view of the structure at À of Figure 6.

Figure 8 1s an enlarged view of the structure at B of Figure 6.

Figure 9 is a schematic diagram of the use of the clamping hanging plate of a lifting device for laminated slabs of the invention.

Figure 10 is the general assembly diagram of a lifting device for a laminated slab of the invention.

Figure 11 is the structural block diagram of a hoisting device for laminated slabs of the invention.

Figure 12 is a block diagram of the steps of the lifting method of a lifting device for laminated slabs of the invention.

Wherein: 1. Lifting box, 2. Rotating shaft, 3. Wire rope, 4. Motor, 5. Main gear, 6. First gear, 7. Second gear, 8. First lifting lug, 9. Bottom plate, 10. Upper clamp plate, 11. Vertical plate, 12.

Back plate, 13. Bolt, 14. Second lifting lug, 15. Third gear, 16. Rack, 17. Chute, 18. Curved base, 19. Connecting rod, 20. Raised part, 21. First inclined plane, 22. Push rod, 23. Groove, 24. Fixed rod, 25. U-shaped splint, 26. Round buckle, 27. Rotating pin, 28. Clamping plate, 29. Through slot, 30. Slide rail, 31. Slider, 32. Slideway, 33. Main lifting rope, 34. Auxiliary lifting rope.

Specific embodiments

In order to make it easy to understand the technical means, creative features, objectives and effects of the invention, the invention is further described in combination with the specific implementation mode.

It should be noted that in the description of the invention, the terms "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the invention rather than requiring the invention to be constructed and operated in a specific orientation, so it cannot be understood as a limitation of the invention. The terms "front", "back", "left", "right", "up" and "down" used in the description of the invention refer to the direction in the drawings, and the terms "inside" and "outside" refer to the direction toward or away from the geometric center of a specific component respectively.

As shown in Figures 1 to 12, the invention provides a lifting device for laminated slabs and a lifting method thereof, which comprises a lifting box 1, a wire rope adjusting mechanism, a clamping hanging plate, a clamping mechanism, and an auxiliary fastening mechanism. The bottom of the lifting box 1 is provided with a hollowing part, which is rotationally connected with three rotating shafts 2, and the inside of the lifting box 1 is provided with a wire rope adjusting mechanism;

The wire rope adjusting mechanism comprises a motor 4 and a main gear 5. One side of the lifting box 1 is provided with a motor 4. The motor 4 is an existing drive motor. The output end of the motor 4 is provided with a main gear 5. Both sides of the main gear 5 are respectively meshed and connected with the first gear 6 and the second gear 7. The first gear 6 and the second gear 7 are respectively at the coaxial position of the rotating shaft 2 at both sides, and are respectively connected with the rotating shaft 2 at both sides; Each rotating shaft 2 is fixed with two strands of steel wire rope 3. The two strands of steel wire rope 3 on the same rotating shaft 2 are fixed in the middle of the rotating shaft 2 through their fixed ends using the existing fixing method. The winding direction of the two strands of steel wire rope 3 on the same rotating shaft 2 1s the same, and they are wound from the middle to the outside, without mutual influence; The winding direction of the wire rope 3 on the rotating shaft 2 at both ends is opposite; The hanging end of each wire rope 3 is provided with two groups of hooks, including the main lifting rope 33 and the auxiliary lifting rope 34. The auxiliary lifting rope 34 is an auxiliary thin rope fixed on the main lifting rope 33, and the end of the auxiliary lifting rope 34 is slightly longer than the end of the main lifting rope 33; When the motor 5 drives, it drives the main gear 5 to rotate, and the main gear 5 drives the first gear 6 and the second gear 7 on both sides to rotate. At this time, the rotation direction of the first gear 6 and the second gear 7 is the same, but the winding direction of the wire rope 3 on the rotating shaft 2 on both sides is opposite. Therefore, when the motor 4 drives, the wire rope 3 on one side extends, and the wire rope 3 on the rotating shaft 2 on the other side shortens;

A plurality of clamping hanging plates are fixed at the side of the laminated slab. The bottom of the clamping hanging plate is the bottom plate 9. The bottom plate 9 is provided with a vertical plate 11, the rear end of the vertical plate 11, the upper side of the bottom plate 9 is provided with a back plate 12, and there is a gap between the vertical plate 11 and the back plate 12; The back plate 12 is provided with a clamping mechanism;

The clamping mechanism comprises an upper clamping plate 10, a bolt 13, a chute 17 and a push rod 22. The vertical plate 11 is provided with a chute 17, and the upper clamping plate 10 is connected with the chute 17 through the convex parts 20 at both sides of the upper clamping plate 10; One end of the upper splint 10 extends into the riser 11, and one end face extends into the riser 11 is the first inclined plane 21; The bolt 13 is threaded on the back plate 12, one end of the bolt 13 passes through the back plate 12 and extends into the vertical plate 11, which is rotationally connected with the push rod 22. The push rod 22 is slidably connected inside the vertical plate 11. The push rod 22 is tapered, and one end face of the push rod 22 is a inclined plane, which is in contact with the first inclined plane 21; An auxiliary fastening mechanism is fixed on the back plate 12; When clamping, tighten the bolt 13. When the bolt 13 moves, it drives the push rod 22 to slide forward. The inclined plane of the push rod 22 contacts the first inclined plane 21 and presses the first inclined plane 21 downward; At this time, the upper plywood 10 moves downward with the first inclined plane 21 to clamp and clamp the laminated slab;

The auxiliary fastening mechanism comprises a third gear 15, a rack 16, an arc-shaped base 18 and a connecting rod 19. The third gear 15 is coaxially fixed on the front smooth surface of the bolt 13; The back of the back plate 12 is provided with a slide rail 30, the slide rail 30 is provided with a slide way 32, the rack 16 is connected with the slide way 32 through the slide block 31, the rack 16 is meshed with the third gear 15, and the upper end of the back plate 12 is fixed with an arc base 18; The upper end of the rack 16 is provided with a groove 23, the middle

; LU503549 of the groove 23 is fixed with a fixing rod 24, and the middle part of the connecting rod 19 is rotationally connected with the arc-shaped base 18 through a rotating pin 27; The rotation pin 27 passes through the arc-shaped base 18, and the end thereof is fixed with a clamping plate 28, and one end of the clamping plate 28 can support the end face of the arc-shaped base 18; One end of the connecting rod 19 is a U-shaped clamp plate 25, and the other end is a round buckle 26. The

U-shaped clamp plate 25 clamps the fixing rod 24 and is in close coordination with it for rotary connection, When the auxiliary lifting rope 34 is hooked on the round buckle 26; Start the crane and lift the laminated slab. When the auxiliary lifting rope 34 pulls the end of the round buckle 26 upward, the connecting rod 19 shows a lever effect and the end of the U-shaped splint 25 moves downward, The U-shaped clamp plate 25 drives the rack 16. When the rack 16 moves down, it turns the third gear 15 and the bolt 13 to make the clamping mechanism more stable; It should be noted that the tightening direction of the bolt 13 must be consistent with the movement direction of the rack 16 under the force of the auxiliary lifting rope 34. The force on the auxiliary lifting rope 34 is small, so when the bolt 13 is rotated to a certain extent, it will not continue to rotate, but will be fixed, and will not reverse or loosen;

On the upper end face of the back plate 12, an arc groove is arranged directly below the connecting rod 19 for the rotation of the connecting rod 19.

The upper end of the back plate 12 is provided with a through slot 29, which is just below the card plate 28 and cooperates with it.

The upper end face of the lifting box 1 is provided with a first lifting lug 8, and the upper end of the back plate 12 is provided with a second lifting lug 14; The first lifting lug 8 cooperates with the anti rotation hook of the hoist, and the second lifting lug 14 cooperates with the main lifting rope 33 of the wire rope 3; The auxiliary hanging rope 34 is matched with the round buckle 26.

The upper end surface of the bottom plate 9 and the lower end surface of the upper clamping plate 10 are both provided with anti slip protrusions.

The motor 4 is electrically connected with the control module inside the lifting box 1. The lifting box 1 is internally equipped with an infrared receiving circuit, which is electrically connected with the remote controller and the control module.

Specific operation:

’ LU503549

Step 1: the device is in place; First, put the device and crane in place, check ropes, machinery, etc., and do a good job of positioning and safety monitoring;

Step 2: clamp the laminated slab; First, clamp the six clamping hanging plates on both sides of the laminated slab through the clamping mechanism, and tighten the bolts 13 at the front, middle and back six positions with a wrench;

Step 3: hook the lifting rope; Move the lifting box 1 to the center of the laminated slab, hook the main lifting rope 33 of the steel wire rope 3 to the second lifting lug 14 through the hook, hook the auxiliary lifting rope 34 to the round buckle 26 through the hook, use the remote controller to control and drive the motor 4 to set the length of the steel wire rope 3, and then hook the first lifting lug 8 to the anti rotation hook of the hoist;

Step 4: lifting, adjusting and placing; Use the crane to lift the laminated slab. At this time, the remote controller can control and drive the motor 4 to adjust the length of the wire rope 3, that is, adjust the inclination of the laminated slab; Until the superimposed slab is adjusted to the proper position and placed at the specified position.

It can be seen from the technical general knowledge that the invention can be realized by other embodiments without departing from its spiritual essence or essential features. Therefore, the above disclosed implementation schemes are only examples in all aspects, not the only ones.

All changes within the scope of the invention or within the scope equivalent to the invention are included in the invention.

Claims

’ LU503549 CLAIMS

1. À lifting device for laminated slab, which is used for clamping auxiliary lifting laminated slab, is characterized in that it comprises: The bottom of the hoisting box (1) is a hollow structure, and a steel wire rope adjusting mechanism is fixedly installed in the hollow structure to tighten the steel wire rope (3) and adjust the length of the steel wire rope (3) to control the installation angle of the laminated slab; A plurality of clamping hanging plates, the clamping hanging plate is fixed on the side of the laminated slab, the bottom of the clamping hanging plate is provided with a bottom plate (9), the bottom plate (9) is fixed with a vertical plate (11), and the back plate (12) is fixed on the bottom plate (9) at the rear end of the vertical plate (11); And the back plate (12) is fixedly connected with the steel wire rope (3); The clamping mechanism is installed on the back plate (12) and the vertical plate (11) to force the upper clamp plate (10) in the clamping mechanism to produce longitudinal displacement and clamp and fix the laminated slab near the bottom plate (9); The auxiliary fastening mechanism is slidably installed on the back plate (12) and fixedly connected with the wire rope (3). The mechanical action of the wire rope (3) limits the movement of the clamping mechanism, so that the laminated slab is always in the clamping state.

2. The lifting device of the laminated slab according to claim 1, which is characterized in that the wire rope adjusting mechanism comprises a motor (4) and a main gear (5), one end of the lifting box (1) is provided with a motor (4), the output end of the motor (4) is fixed with a main gear (5), the two sides of the main gear (5) are meshed and connected with a first gear (6) and a second gear (7), and the first gear (6) The second gear (7), the main gear (5) and the lifting box (1) are rotationally connected with a rotating shaft (2).

3. The lifting device of the laminated slab according to claim 2, which is characterized in that two strands of wire rope (3) are fixed on each of the rotating shafts (2), the fixed ends of the two strands of wire rope (3) on the same rotating shaft (2) are fixed in the middle position on the rotating shaft (2), and the winding directions of the two strands of wire rope (3) on the same rotating shaft (2) are the same, and both are wrapped from the middle to the outside, without affecting each other; The

! LU503549 winding direction of the wire rope (3) on the rotating shaft (2) at both ends is opposite.

4. The lifting device of the laminated slab according to claim 3, which 1s characterized in that the hanging end of each steel wire rope (3) is provided with two sets of hooks, including the main lifting rope (33) and the auxiliary lifting rope (34), the auxiliary lifting rope (34) is fixed on the main lifting rope (33), and the end of the auxiliary lifting rope (34) is longer than the end of the main lifting rope (33).

5. The lifting device of the laminated slab according to claim 4, which is characterized in that the clamping mechanism comprises an upper splint (10), a bolt (13), a chute (17) and a push rod (22). The vertical plate (11) is provided with a chute (17), and the upper splint (10) is connected with the chute (17) through the convex parts (20) at the ends of both sides; One end of the upper clamping plate (10) extends into the vertical plate (11), and one end face extending into the vertical plate (11) is provided with a first inclined plane (21); The bolt (13) is threaded on the back plate (12), one end of the bolt (13) passes through the back plate (12) and extends into the vertical plate (11), and is rotationally connected with the push rod (22). The push rod (22) is slidably connected inside the vertical plate (11), and one end face of the push rod (22) is a beveled plane, and is buttressed with the first inclined plane (21).

6. The lifting device of the laminated slab according to claim 5, which is characterized in that the auxiliary fastening mechanism comprises a third gear (15), a rack (16), an arc base (18) and a connecting rod (19), and the third gear (15) is coaxially fixed on the smooth surface of the front end of the bolt (13); The back of the back plate (12) is provided with a slide track (30), and the slide track (32) 1s provided in the slide track (30). The rack (16) is connected with the slide track (32) through the slide block (31). The rack (16) and the third gear (15) mesh with each other. The upper end of the back plate (12) is fixed with an arc base (18); The upper end of the rack (16) is provided with a groove (23), a fixed rod (24) is fixed in the middle of the groove (23), and the middle part of the connecting rod (19) is rotatably connected with the arc base (18); One end of the connecting rod (19) is a U-shaped clamp plate (25), and the other end is a round buckle (26). The U-shaped clamp plate (25) clamps the fixed rod (24), and is rotatably connected with it.

7. The lifting device of the laminated slab according to claim 6, which is characterized in that the upper end of the lifting box (1) is provided with a first lifting lug (8), and the upper end of the

0 LU503549 back plate (12) is provided with a second lifting lug (14); The first lifting lug (8) cooperates with the anti-rotation hook of the crane, and the second lifting lug (14) cooperates with the main lifting rope (33); The auxiliary lifting rope (34) and the round buckle (26) cooperate with each other.

8. The lifting device of the laminated slab according to claim 1, which is characterized in that the motor (4) and the lifting box (1) are electrically connected with a control module, and the inside of the lifting box (1) is also equipped with an infrared receiving circuit, which is electrically connected with the remote controller and the control module.

9. The lifting method of a lifting device for the laminated slab slab according to any one of claims 1 to 8, first use six splints and clamping mechanism to symmetrically clamp on both sides of the laminated slab slab, and turn the bolts (13) to tighten, the crane connects the lifting box (1) through the hook and lifts the laminated slab slab, at this time, control the rotation direction of the motor to adjust the length of the steel wire rope (3), and then control the tilt angle of the laminated slab to facilitate the installation of workers.

10. The lifting method of the lifting device of the laminated slab according to claim 9, the specific steps are as follows: Step 1: the device is in place; First, put the device and crane in place, check the ropes and machinery, and do a good job of positioning and safety monitoring; Step 2: clamp the laminated slab; First, clamp the six clamping hanging plates on both sides of the laminated slab through the clamping mechanism, and tighten the bolts (13) with a wrench at the front, middle and rear six positions; Step 3: hook the lifting rope; Move the lifting box 1 to the center of the laminated slab, hang the main lifting rope (33) of the wire rope (3) on the second lifting lug (14) through the hook and fix it, hang the auxiliary lifting rope (34) on the round buckle (26) through the hook, use the remote control to control and drive the electric machine (4) to set the length of the wire rope (3), and then hook the first lifting lug (8) on the anti-rotation hook of the crane; Step 4: lifting, adjusting and placing; Use the lifting machine to lift the laminated slab. At this time, the motor (4) can be controlled and driven by the remote controller to adjust the length of the wire rope (3), that is, to adjust the tilt angle of the laminated slab; Until the laminated slab is adjusted to fit and placed in the specified position.