Prefabricated building prefabricated component hoisting device and using method thereof

Abstract

The application discloses an assembled building prefabricated component hoisting device and a using method thereof. The hoisting device comprises a hoist and a lifting appliance. The hoist is a travelling crane, a gantry crane or a caterpillar belt crane. The lifting appliance is arranged on the execution end of the hoist. The hoist comprises a lifting rod and a spread type hoisting assembly. The lifting rod is a vertical straight rod. The top of the lifting rod is provided with a lifting ring connected with a hook on the execution end. The bottom end of the lifting rod is provided with a connecting seat. A sliding sleeve is movably arranged in the middle of the lifting rod. The upper end of the sliding sleeve is vertically connected with a vertical rack. The upper end of the lifting rod is provided with a gear device engaged with the vertical rack and driving the sliding sleeve to move. The spread type hoisting assembly comprises an extension arm, a connecting arm and a hoisting module. Through the adjustable extension arm and the modular hoisting assembly, the square prefabricated components with different sizes and shapes can be accurately matched, and the universality of the device and the adaptation ability to different components are greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of hoisting prefabricated components, in particular to a prefabricated building component hoisting device and its use method. BACKGROUND

[0002] With the increasing requirements of the construction industry on construction efficiency, quality, environmental protection and other aspects, prefabricated buildings gradually become an important direction of modern building development due to their advantages of industrialized production and rapid assembly on site. Prefabricated buildings greatly shorten the construction period, reduce on-site wet work, reduce the impact on the environment, and improve the consistency and stability of building quality. In prefabricated building construction, the hoisting of prefabricated components is one of the key links, and its hoisting efficiency and safety directly affect the progress and quality of the entire project.

[0003] At present, the hoisting technology of prefabricated components of prefabricated buildings mostly focuses on common components such as stairs, beams and boards. Existing technologies such as the hoisting device and method for prefabricated components disclosed in the patent No. CN119637723B and the prefabricated component hoisting device and method disclosed in the publication No. CN119954023A. However, there are relatively few hoisting technologies for square prefabricated components (such as prefabricated concrete wells, window frames, and prefabricated concrete square culvert pipes). Although square components have regular shapes, the weight distribution and stress characteristics of square components of different sizes, materials and purposes differ greatly. Traditional lifting devices such as hooks and lifting belts can only fix the local components and are difficult to achieve comprehensive and stable clamping, which may cause the components to shake, tilt or even fall during hoisting, increasing the construction risk.

[0004] After searching, the current existing technology solutions for square components or similar square components include the following:

[0005] 1) The publication No. CN119797134A discloses a hoisting device for prefabricated components of prefabricated buildings. In this patent application, it includes a ring-shaped frame, multiple lifting assemblies and rotating assemblies. The top side of the ring-shaped frame is connected to an external hoisting device. The ring-shaped frame has an installation cavity and a passage hole. The installation cavity includes a first cavity, a second cavity and a third cavity. The passage hole is provided at the bottom side of the ring-shaped frame and is in communication with the second cavity. Each lifting assembly includes a sliding block group, a lifting mechanism and a lifting ring rod. The sliding block group is slidingly connected to the upper and lower side walls of the second cavity. The lifting drive mechanism is installed on the sliding block group. The bottom end of the lifting ring rod is inserted into the passage hole, and the bottom end of the lifting ring rod is used to connect with the prefabricated component. Each rotating assembly includes an outer gear ring, a driven gear, a rotating drive mechanism and a connecting frame. The connecting frame is fixedly connected with the sliding block group. The rotating drive mechanism is installed on the connecting frame. The driven gear is rotatably connected to the sliding block group. The outer gear ring is engaged with the driven gear.

[0006] 2)Publication No. CN116768027B discloses a concrete prefabricated component hoisting device and construction method, in which the patent application includes two groups of hoisting frames and detection mechanisms respectively arranged at both ends of the prefabricated component; the hoisting frame includes a balance beam, a connecting rod and a cross beam, the cross beam is arranged at the bottom of the prefabricated component, the balance beam is arranged above the prefabricated component, and the connecting rod is vertically arranged between the balance beam and the cross beam; the detection mechanism includes a magnetic ball, a positioning sensor, an electronic tag and a central control console, the magnetic ball is arranged between the two groups of hoisting frames, the magnetic ball is internally provided with a magnetic induction sensor, the positioning sensor and the electronic tag are both embedded on the surface of the prefabricated component, and the output ends of the magnetic induction sensor and the positioning sensor are both in communication connection with the central control console; the device solves the problems of large hoisting rope flexibility and unbalanced hoisting in the traditional hoisting method through the hoisting frame, is convenient and reliable to use, and simultaneously realizes real-time detection of the stability of the hoisting process through the detection mechanism, thereby ensuring the safety of the hoisting process.

[0007] However, the prior art still has the following problems in actual application:

[0008] 1. The hoisting device of Publication No. CN119797134A has a relatively fixed ring frame structure, although multiple lifting assemblies are provided, but for different sizes of square prefabricated components, especially in the case of sizes exceeding the applicable range of the ring frame, effective hoisting is difficult. For example, when encountering a prefabricated concrete square culvert pipe with a size much larger than the passage hole of the ring frame, the component cannot be smoothly connected with the lifting ring rod, resulting in that the device cannot be used.

[0009] The hoisting frame structure of Publication No. CN116768027B has a relatively fixed size and layout of the balance beam, the connecting rod and the cross beam, and it is difficult to ensure perfect adaptation of the hoisting frame to the component for different sizes of square components. For example, small window frame components have a small size, and when using the hoisting frame, the connecting rod and the cross beam may occupy too much space, affecting the hoisting operation, and may not be able to provide sufficient clamping force.

[0010] 2. Although square prefabricated components have regular shapes, components for different purposes may differ in edge shape, thickness, etc. The prior art often designs for relatively standard square components, and for some square components with special edge shapes (such as with grooves, protrusions, etc.), the traditional lifting appliance cannot achieve close fitting and stable fixation. SUMMARY

[0011] The purpose of the present application is to provide a prefabricated component hoisting device for fabricated buildings and a use method thereof, which can accurately adapt to square prefabricated components of different sizes and shapes through the setting of adjustable extension arms and modular hoisting assemblies, greatly improving the versatility and adaptation ability of the device to different components.

[0012] To achieve the above object, the present application provides the following technical scheme: an assembled building prefabricated component hoisting device, comprising a crane and a lifting appliance, wherein the crane is a travelling crane, a gantry crane or a caterpillar crane; the lifting appliance is arranged on the execution end of the crane; the crane comprises a lifting rod and a spreadable hoisting assembly; the lifting rod is a vertical straight rod; a lifting ring is arranged on the top of the lifting rod and connected with a hook on the execution end; a connecting seat is arranged at the bottom end of the lifting rod; a sliding sleeve is movably arranged in the middle of the lifting rod; a vertical rack is vertically connected to the upper end of the sliding sleeve; a gear device is arranged on the upper end of the lifting rod and engaged with the vertical rack to drive the sliding sleeve to move; the spreadable hoisting assembly comprises an extension arm, a connecting arm and a hoisting module; the extension arm is provided with multiple groups and arranged in a ring shape along the outer periphery of the connecting seat; the bottom end of the extension arm is hingedly connected with the connecting seat; a slot is arranged in the middle of the extension arm; one end of the connecting arm is hingedly connected with the sliding sleeve; the other end of the connecting arm extends into the slot and connected with the slot through a sliding shaft.

[0013] Preferably, the crane is a gantry crane, which comprises a gantry, a guide rail arranged on the inner side of the top of the gantry, a power sliding seat sliding along the guide rail, and a main hoisting mechanism arranged on the power sliding seat.

[0014] Preferably, the main hoisting mechanism is a winch type main hoist, a chain crane type main hoist, an electric hoist type main hoist or a hydraulic lifting type main hoist.

[0015] Winch type: the steel wire rope is wound and unwound by a motor-driven winding drum, and an electromagnetic brake is provided, which is suitable for precise lifting control of small and medium-sized components (such as prefabricated concrete plates and window frames), and the lifting speed can reach 8-12 m / min, with low energy consumption and simple maintenance.

[0016] Chain crane type: a planetary gear reducer is used to drive the chain transmission, with a bearing capacity of 50-200 tons, which is suitable for hoisting of heavy components such as large prefabricated concrete pipes, and has strong impact resistance and can stably operate in complex terrain (such as slopes and uneven ground).

[0017] Electric hoist type: the motor, reducer and winding drum are integrated, with compact structure and flexible lifting height (adjustable from 6 to 30 m), which is suitable for construction sites with limited space (such as basements and narrow pipe galleries).

[0018] Hydraulic lifting type: the hydraulic cylinder is driven to extend and retract by a high-pressure hydraulic pump, with stable output and stepless speed regulation, which is particularly suitable for overall lifting of super-large components (such as bridge segments and large shafts), with a synchronization accuracy of ±0.5 mm, which avoids deformation caused by uneven stress on the components.

[0019] Preferably, the top end of the stretching arm is provided with a hoisting module, the hoisting module comprises a steel cable, a support, an I-shaped sliding seat, a scissor clamp and a connecting lug, the support is an I-shaped frame body formed by splicing two angle steels, the connecting lug is arranged at the upper end of the support, the I-shaped sliding seat is arranged on the support in a sliding mode, and the scissor clamp is arranged at the lower end of the I-shaped sliding seat.

[0020] Preferably, the scissor clamp comprises a scissor plate A, a scissor plate B, a clamping arm A, a clamping arm B and a clamp, the upper ends of the scissor plate A and the scissor plate B are coaxially hinged to the lower end of the I-shaped sliding seat, and the lower ends of the scissor plate A and the scissor plate B are respectively hinged to the clamping arm A and the clamping arm B. The scissor structure enables the clamping arm A and the clamping arm B to realize synchronous clamping and loosening actions through the opening and closing movement of the scissor plates. During clamping, the movement of the scissor plates enables the clamping arms to uniformly apply clamping force, so that the component is firmly clamped and is not easy to shake or fall off.

[0021] Preferably, the inner sides of the clamping arm A and the clamping arm B are respectively provided with a clamp, and the upper end of the clamping arm A is provided with a limiting hook for limiting and fixing the clamping arm B,

[0022] Preferably, the top end of the stretching arm is connected with the steel cable of the hoisting module through a rope buckle structure, the rope buckle structure comprises a sleeve, a threaded rod, a top shaft seat, a bottom shaft seat, an X-shaped rod and a rope buckle plate, the sleeve is welded with the top end of the stretching arm, the top shaft seat is arranged at the bottom of the sleeve, the threaded rod is arranged in the sleeve, the extending end of the top of the threaded rod is provided with a handle, and the extending end of the bottom of the threaded rod is connected with the bottom shaft seat.

[0023] Preferably, the X-shaped rod is formed by hingedly connecting two support rods provided with hinge points at the middle portions, the upper side and the lower side of the front end of the X-shaped rod are respectively hingedly connected with the top shaft seat and the bottom shaft seat, and the rear end of the X-shaped rod is connected with the rope buckle plate; the rope buckle plate is an arc-shaped plate provided with rope buckle grooves at the two side edges, the rope buckle grooves are matched with the steel cable, and the rope buckle plate is fixed with the steel cable in a close state through the movement of the threaded rod.

[0024] Preferably, the present application further provides a use method of the prefabricated component hoisting device for fabricated buildings.

[0025] S1: according to the hoisting scheme, marking is performed on the placement position of the square prefabricated component (such as a prefabricated concrete well, a window frame, a prefabricated concrete square culvert and the like), so that the component can be accurately positioned;

[0026] S2: the lifting ring at the top of the lifting rod is connected with the execution end of the main hoisting mechanism of the gantry crane, so that the connection is firm and free from looseness, then the gantry crane is operated to move the lifting rod to the position directly above the square component, so that the lifting rod is coincident with the center line of the component;

[0027] S3: Start the gear device to drive the sliding sleeve to move downward along the lifting rod. Since one end of the connecting arm is hinged to the sliding sleeve and the other end is connected to the slotted hole in the middle of the extension arm through the sliding shaft, the downward movement of the sliding sleeve will drive the connecting arm, causing the extension arm to expand outward around the connecting seat. Adjust the degree of extension of the extension arm according to the size of the component so that the lifting module at the top of the extension arm can reach the lifting point position around the component.

[0028] S4: Open the clamping arms A and B on the scissor clamp, align the clamp with the edge of the component, and then move the scissor clamp closer to the component by operating the I-beam slide until the clamp clamps the component. The limiting hook on clamping arm A can limit and fix clamping arm B to prevent the clamp from loosening.

[0029] S5: Start the main lifting mechanism of the gantry crane and slowly lift the component. During the lifting process, observe the balance of the component.

[0030] S6: After transporting the component above the placement position, slowly lower the component until it approaches the marked position.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] 1. This invention, through the setting of adjustable extension arms and modular hoisting components, can accurately adapt to square precast components of different sizes and shapes. The adjustable extension arms can flexibly adjust the degree of extension according to the actual size of the component. Whether facing small window frames or large precast concrete square culverts, they can be quickly adjusted to the appropriate position to ensure that the hoisting modules accurately reach the hoisting points around the component. The modular hoisting components can be flexibly combined and adjusted according to the edge shape, thickness and other characteristics of the component. For example, for precast concrete wells with special edge shapes such as grooves and protrusions, suitable clamping modules can be selected to achieve tight fit and stable fixation, which greatly improves the versatility of the device and its adaptability to different components.

[0033] 2. This invention achieves rapid fixing and release of the steel cable in the hoisting module through a rope buckle structure, ensuring safe and reliable operation. The X-shaped rod and threaded rod in the rope buckle structure work together; rotating the handle drives the threaded rod to rise and fall, causing the front end of the X-shaped rod to open or close, thereby controlling the clamping or loosening of the steel cable by the rope buckle plate. This purely mechanical fixing method requires no additional tools, allowing a single person to complete the steel cable binding operation. Furthermore, the hinged design of the X-shaped rod evenly distributes the clamping force, preventing excessive localized stress on the steel cable that could lead to wear or breakage, thus improving the safety of the hoisting process. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the lifting device in Embodiment 1 of the present invention;

[0035] Figure 2 This is a partial structural diagram of the boom and the deployable hoisting assembly in Embodiment 1 of the present invention;

[0036] Figure 3 This is a schematic diagram of the deployable hoisting assembly in Embodiment 1 of the present invention;

[0037] Figure 4 This is a schematic diagram of the scissor clamp in Embodiment 1 of the present invention;

[0038] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0039] Figure 6 This is a schematic diagram showing the position of the rope buckle structure in Embodiment 3 of the present invention;

[0040] Figure 7 This is a schematic diagram of the rope buckle structure in Embodiment 3 of the present invention.

[0041] In the diagram: 1. Lifting boom; 11. Lifting ring; 12. Connecting seat; 13. Sliding sleeve; 14. Gear assembly; 2. Deployable lifting assembly; 21. Extending boom; 22. Connecting boom; 23. Steel cable; 24. Bracket; 25. I-beam slide; 26. Scissor clamp; 261. Scissor plate A; 262. Scissor plate B; 263. Clamping arm A; 264. Clamping arm B; 265. Clamping seat; 27. Connecting lug; 3. Gantry crane; 31. Gantry frame; 32. Power sliding seat; 33. Main lifting mechanism; 4. Rope buckle structure; 41. Sleeve; 42. Threaded rod; 43. Top shaft seat; 44. Bottom shaft seat; 45. X-shaped rod; 46. Rope buckle plate. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] In the description of this invention, it should be noted that the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0044] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] Example 1: Please refer to Figure 1 This invention provides a technical solution: a hoisting device for prefabricated components of assembled buildings, including a crane ( Figure 1 (Not shown in the image) and lifting gear.

[0046] Please see Figure 2 , Figure 3 In this embodiment, the lifting device is configured on the execution end of the crane. The crane includes a lifting rod 1 and an unfolding lifting assembly 2. The lifting rod 1 is a vertical rod. The top of the lifting rod 1 is provided with a lifting ring 11 that is connected to a hook on the execution end. The bottom of the lifting rod 1 is provided with a connecting seat 12. A sliding sleeve 13 is movably provided in the middle of the lifting rod 1. The upper end of the sliding sleeve 13 is vertically connected to a vertical rack. The upper end of the lifting rod 1 is equipped with a gear device 14 that meshes with the vertical rack and drives the sliding sleeve 13 to move. The unfolding lifting assembly 2 includes an extension arm 21, a connecting arm 22 and a lifting module. The extension arm 21 is provided in multiple sets and is distributed in a ring around the outer periphery of the connecting seat 12. The bottom end of the extension arm 21 is hinged to the connecting seat 12. The extension arm 21 is provided with a slotted hole in the middle. One end of the connecting arm 22 is hinged to the sliding sleeve 13, and the other end of the connecting arm 22 extends into the slotted hole and is connected to the slotted hole through a sliding shaft.

[0047] In this embodiment, a hoisting module is installed at the top of the extension arm 21. The hoisting module includes a steel cable 23, a bracket 24, an I-beam slide 25, a scissor clamp 26, and connecting ears 27. The bracket 24 is an I-beam frame made of two angle steels spliced ​​together. Connecting ears 27 are provided on both sides of the upper end of the bracket 24. The bracket 24 is provided with an I-beam slide 25 that is slidably arranged. The scissor clamp 26 is installed at the lower end of the I-beam slide 25.

[0048] Please see Figure 4 In this embodiment, the scissor clamp 26 includes scissor plate A261, scissor plate B262, clamping arm A263, clamping arm B264 and clamp 265. The upper ends of scissor plate A261 and scissor plate B262 are coaxially hinged to the lower end of I-beam slide 25, and the lower ends of scissor plate A261 and scissor plate B262 are respectively hinged to clamping arm A263 and clamping arm B264.

[0049] In this embodiment, clamping bases 265 are installed on the inner sides of clamping arms A263 and B264, and a limiting hook is provided at the upper end of clamping arm A263 to limit and fix clamping arm B264.

[0050] Example 1 discloses a prefabricated component hoisting device for prefabricated buildings. Through the driving structure of the hoisting rod 1 and the gear sliding sleeve 13 and the setting of the unfolding hoisting assembly 2, it can realize the efficient and flexible hoisting of square prefabricated components. In addition, through the unique clamping structure design of the scissor clamp seat 26, the stability and safety of the component clamping during the hoisting process can be guaranteed.

[0051] Example 2: Please refer to Figure 5 The present invention provides a technical solution: a hoisting device for prefabricated building components, including a crane and hoisting tools.

[0052] In this embodiment, the crane is a gantry crane 3, which includes a gantry frame 31, a guide rail located on the inner side of the top of the gantry frame 31, a power sliding seat 32 that slides along the guide rail, and a main lifting mechanism 33 mounted on the power sliding seat 32. The main lifting mechanism 33 can be a winch-type main crane, a chain crane-type main crane, an electric hoist-type main crane, or a hydraulic lifting-type main crane.

[0053] In this embodiment, the lifting device is configured on the execution end of the crane, which includes a boom 1 and an unfoldable lifting assembly 2.

[0054] Example 2 discloses a hoisting device for prefabricated building components. Through the gantry crane 3 structure and the setting of various optional main hoisting mechanisms 33, it can flexibly adapt to different hoisting requirements. In addition, the deployable hoisting component 2 can further improve the hoisting stability and applicability.

[0055] Example 3: Please refer to Figure 6 , Figure 7 The present invention provides a technical solution: a hoisting device for prefabricated building components, including a crane and hoisting tools.

[0056] In this embodiment, the crane is a gantry crane, a crawler crane, or a crane with a crane mechanism.

[0057] In this embodiment, the lifting device is configured on the execution end of the crane. The crane includes a boom 1 and an unfolding lifting assembly 2. The boom 1 is a vertical rod. The top of the boom 1 is provided with a lifting ring 11 that is connected to a hook on the execution end. The bottom of the boom 1 is provided with a connecting seat 12. A sliding sleeve 13 is movably provided in the middle of the boom 1. The upper end of the sliding sleeve 13 is vertically connected to a vertical rack. The upper end of the boom 1 is equipped with a gear device 14 that meshes with the vertical rack and drives the sliding sleeve 13 to move. The unfolding lifting assembly 2 includes an extension arm 21, a connecting arm 22 and a lifting module. The extension arm 21 is provided in multiple sets and is distributed in a ring around the outer periphery of the connecting seat 12. The bottom end of the extension arm 21 is hinged to the connecting seat 12. The extension arm 21 is provided with a slotted hole in the middle. One end of the connecting arm 22 is hinged to the sliding sleeve 13, and the other end of the connecting arm 22 extends into the slotted hole and is connected to the slotted hole through a sliding shaft. The top of the extension arm 21 is connected to the steel cable 23 of the hoisting module via a rope buckle structure 4. The rope buckle structure 4 includes a sleeve 41, a threaded rod 42, a top shaft seat 43, a bottom shaft seat 44, an X-shaped rod 45, and a rope buckle plate 46. The sleeve 41 is welded to the top of the extension arm 21. The bottom of the sleeve 41 is provided with a top shaft seat 43. The threaded rod 42 passes through the sleeve 41. The protruding end of the top of the threaded rod 42 is provided with a handle. The protruding end of the bottom of the threaded rod 42 is connected to the bottom shaft seat 44.

[0058] In this embodiment, the X-shaped rod 45 is formed by two support rods hinged together with a hinge point in the middle. The upper and lower sides of the front end of the X-shaped rod 45 are respectively hinged to the top shaft seat 43 and the bottom shaft seat 44. The rear end of the X-shaped rod 45 is connected to the rope buckle plate 46. The rope buckle plate 46 is an arc-shaped plate with rope buckle grooves on both sides. The rope buckle grooves cooperate with the steel cable 23. The rope buckle plate 46 moves with the threaded rod 42 and is in a close-up state to fix the steel cable 23.

[0059] Example 3 discloses a prefabricated component hoisting device for prefabricated buildings. By providing multiple optional crane types such as overhead cranes, gantry cranes 3 and crawler cranes, it can fully adapt to the operational needs of different construction scenarios, thereby realizing flexible hoisting of prefabricated components in various complex environments. At the same time, with the help of a unique adjustable rope buckle structure 4, it ensures that the connection between the steel cable 23 and the hoisting module is stable and reliable.

[0060] In conjunction with Embodiments 1, 2, and 3 above, the present invention also provides a method for using the above-mentioned prefabricated component hoisting device for prefabricated buildings, comprising the following steps:

[0061] S1: According to the hoisting plan, mark the placement positions of the square precast components (such as precast concrete wells, window frames, precast concrete square culverts, etc.) to ensure that the components can be accurately positioned.

[0062] S2: Connect the lifting ring 11 at the top of the boom 1 to the execution end of the main lifting mechanism 33 of the gantry crane 3, ensuring that the connection is firm and without looseness. Then, by operating the gantry crane 3, move the boom 1 to directly above the square component, so that it coincides with the center line of the component.

[0063] S3: Start the gear device 14 and drive the sliding sleeve 13 to move downward along the lifting rod 1. Since one end of the connecting arm 22 is hinged to the sliding sleeve 13 and the other end is connected to the slot in the middle of the extension arm 21 through the sliding shaft, the downward movement of the sliding sleeve 13 will drive the connecting arm 22, so that the extension arm 21 expands outward around the connecting seat 12. According to the size of the component, adjust the degree of extension of the extension arm 21 so that the lifting module at the top of the extension arm 21 can reach the lifting point position around the component.

[0064] S4: Open the clamping arms A and B on the scissor clamp 26, align the clamp 265 with the edge of the component, and then move the scissor clamp 26 closer to the component by operating the I-beam slide 25 until the clamp 265 clamps the component. The limiting hook on the clamping arm A can limit and fix the clamping arm B to prevent the clamp 265 from loosening.

[0065] S5: Start the main lifting mechanism 33 of the gantry crane 3, slowly lift the component, and observe the balance of the component during the lifting process;

[0066] S6: After transporting the component above the placement position, slowly lower the component until it approaches the marked position.

[0067] It is worth noting that the entire hoisting device is controlled by a central control system. Since the control buttons are matched with commonly used equipment and belong to existing mature technology, their electrical connections and specific circuit structures will not be described in detail here.

[0068] The embodiments of the present invention are given for the purposes of illustration and description. 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. Any changes, modifications, substitutions and variations made by those skilled in the art to the above embodiments within the scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A hoisting device for prefabricated building components, comprising a crane and hoisting tools, characterized in that: The crane is a crane crane, gantry crane (3) or crawler crane; The lifting device is configured on the execution end of the crane. The crane includes a boom (1) and an extendable lifting assembly (2). The boom (1) is a vertical rod. The top of the boom (1) is provided with a lifting ring (11) that connects to a hook on the execution end. The bottom of the boom (1) is provided with a connecting seat (12). A sliding sleeve (13) is movably provided in the middle of the boom (1). The upper end of the sliding sleeve (13) is vertically connected to a vertical rack. The upper end of the boom (1) is equipped with a gear device (14) that meshes with the vertical rack and drives the sliding sleeve (13) to move. The extendable lifting assembly (2) includes an extension arm (21), a connecting arm (22), and a lifting module. The extension arm (21) 21) Multiple sets are provided and are arranged in a ring around the outer periphery of the connecting seat (12). The bottom end of the extension arm (21) is hinged to the connecting seat (12). A slotted hole is provided in the middle of the extension arm (21). One end of the connecting arm (22) is hinged to the sliding sleeve (13). The other end of the connecting arm (22) extends into the slotted hole and is connected to the slotted hole through the sliding shaft. A hoisting module is installed at the top of the extension arm (21). The hoisting module includes a steel cable (23), a bracket (24), an I-shaped sliding seat (25), a scissor clamp seat (26), and a connecting ear (27). The bracket (24) is an I-shaped frame made of two angle steels. Connecting ears (27) are provided on both sides of the upper end. The bracket (24) is provided with a sliding I-beam slide (25), and a scissor clamp (26) is installed at the lower end of the I-beam slide (25). The top end of the extension arm (21) is connected to the steel cable (23) of the hoisting module through a rope buckle structure (4). The rope buckle structure (4) includes a sleeve (41), a threaded rod (42), a top shaft seat (43), a bottom shaft seat (44), an X-shaped rod (45), and a rope buckle plate (46). The sleeve (41) is welded to the top end of the extension arm (21). The bottom of the sleeve (41) is provided with a top shaft seat (43). A scissor clamp (26) is inserted inside the sleeve (41). The threaded rod (42) has a handle at the top and a bottom end connected to the bottom bearing seat (44). The X-shaped rod (45) is formed by two support rods with a hinge point in the middle. The top and bottom sides of the front end of the X-shaped rod (45) are respectively hinged to the top bearing seat (43) and the bottom bearing seat (44). The rear end of the X-shaped rod (45) is connected to the rope buckle plate (46). The rope buckle plate (46) is an arc-shaped plate with rope buckle grooves on both sides. The rope buckle grooves cooperate with the steel cable (23). The rope buckle plate (46) moves with the threaded rod (42) and is in a close-up state to fix the steel cable (23).

2. The prefabricated component hoisting device for prefabricated buildings according to claim 1, characterized in that: The crane is a gantry crane (3), which includes a gantry frame (31), a guide rail located on the inner side of the top of the gantry frame (31), a power sliding seat (32) that slides along the guide rail, and a main lifting mechanism (33) mounted on the power sliding seat (32).

3. The prefabricated component hoisting device for prefabricated buildings according to claim 2, characterized in that: The main hoisting mechanism (33) is a winch-type main hoist, a chain crane-type main hoist, an electric hoist-type main hoist, or a hydraulic lifting-type main hoist.

4. The hoisting device for prefabricated components of assembled buildings according to claim 1, characterized in that: The scissor clamp (26) includes scissor plate A (261), scissor plate B (262), clamping arm A (263), clamping arm B (264) and clamping seat (265). The upper ends of scissor plate A (261) and scissor plate B (262) are coaxially hinged to the lower end of I-shaped slide (25). The lower ends of scissor plate A (261) and scissor plate B (262) are respectively hinged to clamping arm A (263) and clamping arm B (264).

5. The hoisting device for prefabricated components of assembled buildings according to claim 4, characterized in that: The inner sides of clamping arms A (263) and B (264) are each equipped with a clamping seat (265), and the upper end of clamping arm A (263) is provided with a limiting hook for limiting and fixing clamping arm B (264).

6. A method of using a prefabricated component hoisting device for prefabricated buildings according to any one of claims 1-5, characterized in that: Includes the following steps: S1: Mark the placement positions of the square components according to the hoisting plan to ensure that the square components can be accurately positioned; S2: Connect the lifting ring (11) at the top of the boom (1) to the execution end of the main lifting mechanism (33) of the gantry crane (3), ensuring that the connection is firm and without looseness. Then, by operating the gantry crane (3), move the boom (1) directly above the square component so that it coincides with the center line of the square component. S3: Start the gear device (14) and drive the sliding sleeve (13) to move downward along the lifting rod (1). Since one end of the connecting arm (22) is hinged to the sliding sleeve (13) and the other end is connected to the slot in the middle of the extension arm (21) through the sliding shaft, the downward movement of the sliding sleeve (13) will drive the connecting arm (22), so that the extension arm (21) expands outward around the connecting seat (12). According to the size of the square component, adjust the degree of extension of the extension arm (21) so that the lifting module at the top of the extension arm (21) can reach the lifting point position around the square component. S4: Open the clamping arms A and B on the scissor clamp (26) so that the clamp (265) is aligned with the edge of the square component. Then, by operating the I-beam slide (25), the scissor clamp (26) is moved closer to the square component until the clamp (265) clamps the square component. The limiting hook on the clamping arm A can limit and fix the clamping arm B to prevent the clamp (265) from loosening. S5: Start the main lifting mechanism (33) of the gantry crane (3) and slowly lift the square component. During the lifting process, observe the balance of the square component. S6: After transporting the square component above the placement position, slowly lower the square component until it is close to the marked position.

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