A hoisting device for prefabricated buildings

Abstract

The utility model relates to prefabricated building hoisting equipment technical field, especially a hoist and carry device of prefabricated building. Hoist and carry device includes crane mechanism, a plurality of hoisting mechanism and a plurality of with hoisting mechanism one -to -one corresponding setting's hanging box. Hanging box can be pre -buried in the hoisting point position of prefabricated building, and with prefabricated building detachable connection, hoisting mechanism includes hang -up subassembly, and each hang -up subassembly can synchronous lifting or independent lifting, and hang -up subassembly includes the hook of rotatable drive, and hanging box is equipped with the plug -in part of adaptation with hook. Through setting up the cooperation of liftable, rotatable hang -up subassembly and pre -buried hanging box, realized the mechanization operation of hook insertion, rotation locking and unhooking whole process, compared with traditional hoisting operation, and the device need not manual direct participation hook and unhook, avoided manual climbing hoisting, unhooking, dismounting hanging box operation, reduced the climbing safety risk, promoted the operation efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of hoisting equipment for prefabricated buildings, and in particular to a hoisting device for prefabricated buildings. Background Technology

[0002] With the rapid development of the national prefabricated building industry, the demand for heavy-duty hoisting in prefabricated buildings is gradually increasing. Compared with the traditional construction industry's on-site concrete construction, prefabricated buildings break down the entire building into multiple room building modules, which are prefabricated in factories. Therefore, whether it is the hoisting of prefabricated wall panels and room modules in the factory or the hoisting of room modules on the construction site, the demand for heavy-duty hoisting is greatly increased.

[0003] Currently, the traditional method of pre-embedded steel lifting rings in prefabricated concrete components, combined with ordinary hooks, is commonly used in hoisting operations. This method is simple in structure and low in cost, and is widely used in the industry. However, with the diversification of prefabricated building structures, especially when the lifting points are located on horizontal components such as floor slabs, traditional steel lifting rings have revealed many problems. Because the steel lifting rings need sufficient anchorage length to ensure hoisting safety, their exposed height is relatively high. If directly placed on the floor slab, they cannot be effectively encased during subsequent concrete pouring, resulting in the lifting rings being exposed on the structural surface. Therefore, after the component is hoisted into place, the exposed lifting rings must be manually cut off, which not only increases construction procedures and labor costs but may also generate sparks, noise, and residual stress during the cutting operation, affecting on-site safety and structural durability.

[0004] To address these issues, the industry has experimented with embedding internally threaded sleeves within concrete components and then screwing externally threaded eye bolts into these sleeves as lifting points during hoisting. This method allows the eye bolts to be unscrewed after hoisting, avoiding cutting and improving the integrity of the structural surface. However, this method still requires manual installation and removal of the eye bolts before and after hoisting, especially with large components or multiple lifting points. This is cumbersome, time-consuming, and significantly reduces construction efficiency, while also posing certain safety risks in high-altitude operations. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, this utility model provides a hoisting device for prefabricated buildings, which solves the technical problems of low construction efficiency and high safety hazards caused by the need to cut traditional steel bar lifting rings, as well as the need for repeated manual tightening and disassembly of pre-embedded threaded lifting rings, which consumes time and affects the construction progress.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0009] This utility model provides a hoisting device for prefabricated buildings, including a hanger mechanism, multiple hoisting mechanisms, and multiple hoisting boxes corresponding to the hoisting mechanisms. The hanger mechanism can be detachably connected to the hoisting equipment, the multiple hoisting mechanisms are movably mounted on the slide rails of the hanger mechanism, and the hoisting boxes can be pre-embedded at the hoisting points of the prefabricated building and are detachably connected to the prefabricated building. The hoisting mechanism includes a hanging assembly, and each hanging assembly can be raised and lowered synchronously or independently. The hanging assembly includes a rotatable hook, and the hoisting box is provided with a plug-in portion adapted to the hook. During hoisting operations, the hook descends and inserts into the plug-in portion. By driving the hook to rotate from the insertion position to the locking position, the hook and the hoisting box form a locked state of hooking and locking. The hanging assembly is raised and lowered to lift or lower the prefabricated building. After the prefabricated building is hoisted to a preset position, the hook and the hoisting box remain locked and rotate from the locked position to the disengaged position, so that the hoisting box is disengaged from the hoisting points of the prefabricated building.

[0010] Preferably, the lifting box includes a shell, a baffle, and a connecting stud; the top of the shell has an insertion interface for inserting a hook, the baffle is vertically disposed in the inner cavity of the shell and located below the insertion interface, the connecting stud is fixedly connected to the bottom of the shell and is used to connect with the mounting hole at the lifting point of the prefabricated building; when the hook is inserted into the insertion interface and rotated from the insertion position to the locking position, the hook abuts against the baffle; when the hook continues to rotate in the same direction from the locking position to the disengaged position, the hook and the baffle remain in contact, driving the shell and the connecting stud to rotate synchronously, so that the connecting stud is unscrewed from the mounting hole.

[0011] Preferably, the hook is in the shape of an inverted triangle; a locking groove is provided on the inner wall of the outer shell; when the hook is rotated from the insertion position to the locking position, the hook can engage with the locking groove.

[0012] Preferably, the mounting assembly further includes a drive unit; the drive unit is connected to the hook drive to drive the hook to rotate.

[0013] Preferably, the mounting assembly further includes a mounting housing, and the drive unit is installed inside the mounting housing; the hoisting mechanism further includes a lifting unit; the lifting unit includes a rope, a hoist and a hoist housing; the hoist is installed on the hoist housing, one end of the rope is wound around the output shaft of the hoist, and the other end is fixedly connected to the mounting housing for lifting and lowering the mounting assembly.

[0014] Preferably, the outer diameter of the mounting housing is smaller than the inner diameter of the hoist housing; when the mounting assembly rises to its highest position, the upper part of the mounting housing can be accommodated inside the hoist housing.

[0015] Preferably, the hoisting mechanism further includes a moving unit; the moving unit includes a moving motor, a mounting frame, and multiple traveling wheels; the mounting frame is connected to the lifting unit, the traveling wheels are rotatably mounted on the mounting frame, and the moving motor is connected to the traveling wheels for driving the traveling wheels to move along the slide rail.

[0016] Preferably, the number of hoisting mechanisms is four, six, or eight.

[0017] Preferably, the gantry mechanism includes a gantry and a slewing unit; the slewing unit is installed on the top of the gantry and can be connected to the lifting equipment; the slewing unit can drive the gantry to rotate, thereby driving the prefabricated building to rotate synchronously.

[0018] Preferably, the lifting mechanism further includes multiple support legs; the multiple support legs are located at the bottom of the lifting frame; the height of the support legs is greater than the height of the lifting mechanism.

[0019] (III) Beneficial Effects

[0020] The beneficial effects of this utility model are:

[0021] This utility model discloses a hoisting device for prefabricated buildings. By setting up a lifting and rotating hanging component and cooperating with a pre-embedded hanging box, it realizes the mechanized operation of the entire process of hook insertion, rotation locking and unhooking. Compared with traditional hoisting operations, this device does not require manual participation in hooking and unhooking, avoiding manual climbing to hang, unhook and disassemble the hanging box, greatly reducing the safety risks of climbing and improving work efficiency.

[0022] The lifting box is pre-embedded at the lifting point of the component. After hoisting, rotating the hook causes the lifting box to rotate synchronously and detach from the component, achieving in-situ removal of the lifting point structure. This eliminates the need for subsequent manual cutting or unscrewing, avoiding the problems of residual lifting rings and secondary processing required in traditional processes, and significantly reducing on-site construction procedures and manual intervention. After detachment, the lifting box can be recycled and reused for hoisting other components, reducing material consumption and construction costs.

[0023] This device is suitable for various prefabricated wall panels, floor slabs, and modular rooms, and is especially suitable for areas where the lifting points are located on the floor slab or other parts where it is inconvenient to retain the exposed structure. It has good engineering applicability. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a hoisting device for prefabricated buildings according to the present invention.

[0025] Figure 2 A schematic diagram of the overall structure of the hoisting mechanism and the hoisting box;

[0026] Figure 3 This is a cross-sectional schematic diagram of the hoisting mechanism and the hoisting box;

[0027] Figure 4 This is a front view diagram of the hanging box;

[0028] Figure 5 for Figure 4 A cross-sectional view of the hanging box at point AA;

[0029] Figure 6 for Figure 4 A cross-sectional view of the hanging box at point BB.

[0030] [Explanation of Labels in the Attached Image]

[0031] 1: Hanger mechanism; 11: Hanger; 12: Outrigger; 13: Slewing unit; 131: Slewing bearing; 132: Slewing motor; 133: Lifting lug;

[0032] 2: Lifting mechanism; 21: Mounting assembly; 211: Mounting housing; 212: Drive unit; 2121: Mounting motor; 2122: Mounting reducer; 2123: Coupling; 213: Hook; 22: Lifting unit; 221: Rope; 222: Hoist; 223: Hoist housing; 23: Moving unit; 231: Moving motor; 232: Mounting frame; 233: Traveling wheel; 234: Lateral support wheel;

[0033] 3: Hanging box; 31: Outer shell; 311: Insertion interface; 312: Locking groove; 32: Baffle; 33: Connecting stud. Detailed Implementation

[0034] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0036] Example:

[0037] like Figure 1As shown, this embodiment provides a hoisting device for prefabricated buildings. The hoisting device includes a hoisting mechanism 1, multiple hoisting mechanisms 2, and multiple hoisting boxes 3 corresponding one-to-one with the hoisting mechanisms 2. The hoisting mechanism 1 can be detachably connected to the hoisting equipment. The multiple hoisting mechanisms 2 are movably mounted on the slide rails of the hoisting mechanism 1. The hoisting boxes 3 can be pre-embedded at the hoisting points of the prefabricated building and are detachably connected to the prefabricated building. This device is suitable for various prefabricated wall panels, floor slabs, and modular rooms, especially suitable for hoisting points located in areas where it is inconvenient to retain exposed structures, such as floor slabs, and has good engineering applicability. The hoisting boxes 3 are pre-embedded at the hoisting points of the components. After hoisting, rotating the hook can drive the hoisting boxes 3 to rotate synchronously and detach them from the components, achieving in-situ removal of the hoisting point structure without subsequent manual cutting or unscrewing operations. This avoids the problems of residual lifting rings and the need for secondary processing in traditional processes, significantly reducing on-site construction procedures and manual intervention. After detachment, the hoisting boxes 3 can be recycled and reused for hoisting other components, reducing material consumption and construction costs.

[0038] like Figure 2 As shown, the hoisting mechanism 2 includes a mounting assembly 21, and each mounting assembly 21 can be raised and lowered synchronously or independently. The mounting assembly 21 includes a rotatable hook 213, and the hoisting box 3 is provided with a plug-in part adapted to the hook 213. During hoisting operations, the hook 213 descends and inserts into the plug-in part. By driving the hook 213 to rotate from the insertion position to the locking position, the hook 213 and the hoisting box 3 form a locked state of hooking and locking. The mounting assembly 21 is raised and lowered to lift or lower the prefabricated building. After the prefabricated building is hoisted to the preset position, the hook 213 and the hoisting box 3 remain in the locked state and rotate together from the locked position to the disengaged position, so that the hoisting box 3 is disengaged from the hoisting point of the prefabricated building. By setting up a lifting and rotating mounting component 21 in conjunction with a pre-embedded lifting box 3, the entire process of inserting, rotating and locking the hook 213 and unhooking it is mechanized. Compared with traditional hoisting operations, this device does not require manual intervention in hooking and unhooking, avoiding manual climbing to hang, unhook, and disassemble the lifting box, greatly reducing the safety risks of climbing and improving work efficiency.

[0039] Preferably, such as Figure 4 , Figure 5 and Figure 6As shown, the lifting box 3 includes a housing 31, a baffle 32, and a connecting stud 33. The top of the housing 31 has an insertion interface 311 for inserting the hook 213. The baffle 32 is vertically disposed within the inner cavity of the housing 31 and located below the insertion interface 311. The connecting stud 33 is fixedly connected to the bottom of the housing 31 and is used to connect with the mounting hole at the lifting point of the prefabricated building. When the hook 213 is inserted into the insertion interface 311 and rotates from the inserted position to the locked position, the hook 213 abuts against the baffle 32. During the process of the hook 213 continuing to rotate in the same direction from the locked position to the disengaged position, the hook 213 remains in contact with the baffle 32, driving the housing 31 and the connecting stud 33 to rotate synchronously, so that the connecting stud 33 unscrews from the mounting hole. The hook 213 performs the lifting function in the locked position. When it continues to rotate in the same direction to the release position, it automatically converts into a driving component. By pushing the baffle 32, it directly transmits the rotational torque to the entire lifting box 3, eliminating the need for an additional driving mechanism. It completes two complex operation processes with a simple rotation action, greatly simplifying the operation, improving work efficiency, and avoiding manual work at height.

[0040] Preferably, the hook 213 is inverted triangular in shape, and a locking groove 312 is provided on the inner wall of the outer casing 31. When the hook 213 is rotated to the locked position, the hook 213 can engage with the locking groove 312. This geometric fit constitutes a mechanical interlock, which can effectively resist vibrations or impacts that may occur during lifting and transportation, prevent the hook 213 from accidentally rotating or slipping in the locked position, and greatly improve the safety of the lifting process.

[0041] Preferably, rotating the hook 213 90° allows it to rotate from the inserted position to the locked position.

[0042] Preferably, the mounting assembly 21 further includes a drive unit 212, which is connected to the hook 213 in a transmission manner to drive the hook 213 to rotate.

[0043] Specifically, such as Figure 3 As shown, the drive unit 212 includes a mounted motor 2121, a mounted reducer 2122, and a coupling 2123. The output shaft of the mounted motor 2121 is connected to the input end of the mounted reducer 2122, and the output end of the mounted reducer 2122 is fixedly connected to the top end of the hook 213 through the coupling 2123, thus forming a transmission chain that drives the hook 213 to rotate around its axis.

[0044] Furthermore, the mounting assembly 21 also includes a mounting housing 211, within which the drive unit 212 is mounted. The mounting housing 211 provides a mounting base and structural protection for the mounting motor 2121 and the mounting reducer 2122.

[0045] Preferably, the side wall or top of the mounting housing 211 is provided with a removable maintenance cover. When installed, the maintenance cover and the mounting housing 211 together form a sealed space to protect the internal components; when maintenance or replacement is required, it can be removed to expose the drive unit 212, thereby providing an operating channel for the disassembly and maintenance of the mounting motor 2121.

[0046] Preferably, a guide cover (not shown in the figure) is fixedly provided at the bottom of the mounting housing 211, and the lower opening of the guide cover forms a trumpet-shaped guide opening that gradually expands from top to bottom. When the hook 213 descends to insert into the lifting box 3, even if there is a certain horizontal deviation between the insertion part of the hook 213 and the lifting box 3 due to manufacturing or installation errors in the spacing of multiple lifting points, the trumpet-shaped guide opening can guide the lifting box 3 or the hook 213 to produce a small adaptive displacement in the initial contact stage, thereby achieving fast and accurate alignment, effectively compensating for the error in the spacing of the lifting points, and significantly reducing the difficulty and time of alignment.

[0047] like Figure 3 As shown, the hoisting mechanism 2 also includes a lifting unit 22, which includes a rope 221, a hoist 222, and a hoist housing 223. The hoist 222 is mounted on the hoist housing 223. One end of the rope 221 is wound around the output shaft of the hoist 222, and the other end is fixedly connected to the mounting housing 211 for lifting and lowering the mounting assembly 21.

[0048] Preferably, the outer diameter of the mounting housing 211 is smaller than the inner diameter of the hoist housing 223. When the mounting assembly 21 rises to its highest position, the upper part of the mounting housing 211 can be accommodated within the hoist housing 223. By engaging with the inner wall of the hoist housing 223, the circumferential limit of the mounting housing 211 is achieved, thereby preventing it from rotating during operation.

[0049] like Figure 2 As shown, the hoisting mechanism 2 also includes a moving unit 23, which includes a moving motor 231, a mounting frame 232, and multiple traveling wheels 233. The mounting frame 232 is connected to the lifting unit 22, and the traveling wheels 233 are rotatably mounted on the mounting frame 232. The moving motor 231 is connected to the traveling wheels 233 for driving the traveling wheels 233 to move along the slide rail, so that the hoisting mechanism 2 can change the hoisting position to match different hoisting points.

[0050] Preferably, the moving unit 23 further includes at least one pair of lateral support wheels 234. The lateral support wheels 234 are rotatably mounted on the mounting bracket 232, and the axis of rotation of the lateral support wheels 234 is perpendicular to the axis of rotation of the traveling wheels 233, allowing their wheel surfaces to press against the side of the web of the slide rail. The lateral support wheels 234 effectively suppress lateral swaying, ensuring smooth operation and safety.

[0051] Preferably, the number of hoisting mechanisms 2 is four, six, or eight.

[0052] like Figure 1 As shown, the gantry mechanism 1 includes a gantry 11 and a slewing unit 13. The slewing unit 13 is installed on the top of the gantry 11 and can be connected to the lifting equipment. The slewing unit 13 can drive the gantry 11 to rotate, thereby driving the prefabricated building to rotate synchronously.

[0053] Furthermore, the slewing unit 13 includes a slewing bearing 131, a slewing motor 132, and multiple lifting lugs 133. The slewing bearing 131 includes an inner ring and an outer ring that rotate relative to each other. The inner ring is fixedly connected to the top center of the hanger 11, and the outer ring is detachably connected to a lifting device, such as a crane hook, via multiple lifting lugs 133. The slewing motor 132 is fixedly mounted on the slewing bearing 131, and its output end is connected to the rotating components of the slewing bearing 131 via gears. When it is necessary to adjust the aerial posture of the prefabricated building, the slewing motor 132 is started, driving the inner ring of the slewing bearing 131, along with the hanger 11 as a whole, to rotate relative to the outer ring and the lifting device, thereby achieving horizontal rotation of the load. The slewing unit 13 can quickly and accurately align with the installation position, greatly improving construction efficiency and installation accuracy.

[0054] Preferably, the lifting mechanism 1 further includes multiple support legs 12, which are disposed at the bottom of the lifting frame 11, and the height of the support legs 12 is greater than the height of the lifting mechanism 2. When the lifting device is placed on the ground via its support legs 12, the support legs 12 form a stable supporting foundation. The support legs 12 ensure that the bottom of the lifting mechanism 2 maintains a safe distance from the ground, effectively preventing accidental collisions or interference between the lifting mechanism 2 and its suspended mounting components 21 and the ground, and providing a stable and reliable static working reference for the entire device.

[0055] The working process of hoisting equipment in prefabricated buildings is as follows:

[0056] First, multiple lifting boxes 3 are pre-embedded and fixed at their designated lifting points during the prefabricated building production process. They are then connected to the rotating unit 13 at the top of the lifting frame mechanism 1 via a lifting device. The lifting device is then lifted above the building component. The moving unit 23 drives each lifting mechanism 2 to move on the slide rails of the lifting frame 11 for initial positioning. Second, the lifting unit 22 is activated to lower the hanging assembly 21, causing the hook 213 to insert into the insertion interface 311 of the lifting box 3. The hanging motor 2121 drives the hook 213 to rotate from the insertion position to the locking position, so that its hook body engages with the locking groove 31. 2. The components are engaged and abut against the baffle 32. Then, the lifting unit 22 simultaneously lifts each mounting component 21, lifting the prefabricated building off the ground. The lifting equipment then transfers the building to the installation position. Finally, the lifting unit 22 first lifts the mounting component 21 upwards, so that the mounting shell 211 is housed and circumferentially locked inside the lifting machine shell 223. The mounting motor 2121 drives the hook 213 to continue rotating in the same direction from the locked position to the release position. By pushing the baffle 32, the torque is transmitted to the entire lifting box 3, causing the connecting stud 33 to unscrew from the mounting hole, completing the demolding.

[0057] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0058] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0059] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0060] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0061] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A hoisting device for prefabricated buildings, characterized in that, It includes a hanging mechanism (1), multiple lifting mechanisms (2) and multiple lifting boxes (3) that correspond one-to-one with the lifting mechanisms (2); The hanging mechanism (1) can be detachably connected to the lifting equipment, and multiple lifting mechanisms (2) are movably arranged on the slide rail of the hanging mechanism (1). The hanging box (3) can be pre-embedded in the lifting point position of the prefabricated building and detachably connected to the prefabricated building. The hoisting mechanism (2) includes a hanging assembly (21), and each of the hanging assemblies (21) can be raised and lowered synchronously or independently. The hanging assembly (21) includes a rotatable hook (213), and the hoisting box (3) is provided with a plug-in part that is adapted to the hook (213). During hoisting operations, the hook (213) descends and inserts into the plug-in part. By driving the hook (213) to rotate from the insertion position to the locking position, the hook (213) and the hoisting box (3) form a locked state of hooking and locking. The hoisting assembly (21) is raised and lowered to lift or lower the prefabricated building. When the prefabricated building is hoisted to the preset position, the hook (213) and the hoisting box (3) remain locked and rotate together from the locked position to the disengaged position, so that the hoisting box (3) is disengaged from the hoisting point of the prefabricated building.

2. The hoisting device for prefabricated buildings as described in claim 1, characterized in that: The hanging box (3) includes an outer shell (31), a baffle (32) and a connecting stud (33); The top of the outer shell (31) is provided with an insertion interface (311) for inserting the hook (213). The baffle (32) is vertically arranged in the inner cavity of the outer shell (31) and located below the insertion interface (311). The connecting stud (33) is fixedly connected to the bottom end of the outer shell (31) and is used to connect with the mounting hole at the hoisting point of the prefabricated building. When the hook (213) is inserted into the connector (311) and rotates from the insertion position to the locking position, the hook (213) abuts against the baffle (32); as the hook (213) continues to rotate in the same direction from the locking position to the disengagement position, the hook (213) remains in contact with the baffle (32), driving the housing (31) and the connecting stud (33) to rotate synchronously, so that the connecting stud (33) is screwed out of the mounting hole.

3. The hoisting device for prefabricated buildings as described in claim 2, characterized in that: The hook (213) is in the shape of an inverted triangle; The inner wall of the outer casing (31) is provided with a locking groove (312). When the hook (213) rotates from the insertion position to the locking position, the hook (213) can engage with the locking groove (312).

4. The hoisting device for prefabricated buildings as described in claim 1, characterized in that: The mounting assembly (21) also includes a drive unit (212); The drive unit (212) is connected to the hook (213) for driving the hook (213) to rotate.

5. The hoisting device for prefabricated buildings as described in claim 4, characterized in that: The mounting assembly (21) also includes a mounting housing (211), and the drive unit (212) is installed inside the mounting housing (211); The hoisting mechanism (2) also includes a lifting unit (22); The lifting unit (22) includes a rope (221), a hoist (222), and a hoist housing (223). The hoist (222) is installed on the hoist housing (223). One end of the rope (221) is wound around the output shaft of the hoist (222), and the other end is fixedly connected to the hanging housing (211) for raising and lowering the hanging assembly (21).

6. The hoisting device for prefabricated buildings as described in claim 5, characterized in that: The outer diameter of the mounting shell (211) is smaller than the inner diameter of the hoist shell (223); When the mounting assembly (21) rises to its highest position, the upper part of the mounting housing (211) can be accommodated inside the hoist housing (223).

7. The hoisting device for prefabricated buildings as described in claim 5, characterized in that: The hoisting mechanism (2) also includes a moving unit (23); The mobile unit (23) includes a mobile motor (231), a mounting frame (232), and multiple wheels (233). The mounting bracket (232) is connected to the lifting unit (22), the walking wheel (233) is rotatably mounted on the mounting bracket (232), and the moving motor (231) is connected to the walking wheel (233) for driving the walking wheel (233) to move along the slide rail.

8. The hoisting device for prefabricated buildings as described in claim 1, characterized in that: The number of the hoisting mechanisms (2) is four, six, or eight.

9. The hoisting device for prefabricated buildings as described in claim 8, characterized in that: The hanger mechanism (1) includes a hanger (11) and a slewing unit (13). The slewing unit (13) is installed on the top of the hanger (11) and can be connected to the lifting equipment; The slewing unit (13) can drive the hanger (11) to rotate, thereby driving the prefabricated building to rotate synchronously.

10. The hoisting device for prefabricated buildings as described in claim 8, characterized in that: The hanger mechanism (1) also includes multiple support legs (12); Multiple of the support legs (12) are disposed at the bottom of the hanger (11); The height of the outrigger (12) is greater than the height of the hoisting mechanism (2).

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