Prefabricated building prefabricated part hoisting device and using method thereof

Abstract

The invention discloses an assembly type building prefabricated part hoisting device and a using method thereof. The hoisting device comprises a crane and a sling, and the crane is a travelling crane, a gantry crane or a crawler crane; the lifting appliance is arranged at the execution tail end of the crane, the crane comprises a lifting rod and an expansion type lifting assembly, the lifting rod is a vertical straight rod, a lifting ring connected with a hook at the execution tail end is arranged at the top of the lifting rod, a connecting seat is arranged at the bottom end of the lifting rod, and a sliding sleeve is movably arranged in the middle of the lifting rod; a gear device meshed with the vertical rack and driving the sliding sleeve to move is arranged at the upper end of the suspender; the expansion type hoisting assembly comprises an extension arm, a connecting arm and a hoisting module. Through the arrangement of the adjustable extension arms and the modular hoisting assemblies, the device can be precisely matched with square prefabricated parts of different sizes and shapes, and the universality of the device and the adaptability to different parts are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of prefabricated component hoisting, specifically to a hoisting device for prefabricated components of assembled buildings and its usage method. Background Technology

[0002] With the construction industry's increasing demands for construction efficiency, quality, and environmental protection, prefabricated buildings, due to their advantages of industrialized production and rapid on-site assembly, are gradually becoming an important direction for modern architectural development. Prefabricated buildings significantly shorten the construction cycle, reduce on-site wet work, and lower the environmental impact of construction by prefabricating various building components in a factory and then transporting them to the construction site for assembly. This also improves the consistency and stability of building quality. In prefabricated building construction, the hoisting of prefabricated components is a crucial step, and its efficiency and safety directly affect the progress and quality of the entire project.

[0003] Currently, hoisting technologies for prefabricated components in prefabricated buildings are mostly concentrated on common components such as stairs, beams, and slabs. Existing technologies include a hoisting device and method for prefabricated components published in CN119637723B and CN119954023A. However, hoisting technologies for square prefabricated components (such as prefabricated concrete wells, window frames, and prefabricated square culverts) are relatively scarce. Although square components have regular shapes, their weight distribution and stress characteristics vary significantly depending on their size, material, and purpose. Traditional hoisting tools such as hooks and slings can often only fix a portion of the component, making it difficult to achieve comprehensive and stable clamping. This can easily lead to swaying, tilting, or even detachment of the component during hoisting, increasing construction risks.

[0004] A search revealed the following existing technical solutions regarding square or near-square components: 1) Publication No. CN119797134A discloses a hoisting device for prefabricated components of prefabricated buildings. In this patent application, it includes a ring frame, multiple lifting components and a rotating component. The top side of the ring frame is connected to an external hoisting device. The ring 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 located on the bottom side of the ring frame and communicates with the second cavity. Each lifting component includes a slider group, a lifting mechanism and a lifting ring rod. The slider group is slidably connected to the upper and lower side walls of the second cavity. The lifting drive mechanism is installed on the slider group. The bottom end of the lifting ring rod passes through the passage hole and is used to connect with the prefabricated component. Each rotating component includes an external gear ring, a driven gear, a rotating drive mechanism and a connecting frame. The connecting frame is fixedly connected to the slider group. The rotating drive mechanism is installed on the connecting frame. The driven gear is rotatably connected to the slider group. The external gear ring meshes with the driven gear.

[0005] 2) Announcement No. CN116768027B discloses a hoisting device and construction method for precast concrete components. This patent application includes two sets of hoisting frames and a detection mechanism respectively located at both ends of the precast component. The hoisting frame includes a balance beam, a connecting rod, and a crossbeam. The crossbeam is located at the bottom of the precast component, the balance beam is located above the precast component, and the connecting rod is vertically positioned between the balance beam and the crossbeam. The detection mechanism includes a magnetic ball, a positioning sensor, an electronic tag, and a central control console. The magnetic ball is located between the two sets of hoisting frames, and a magnetic induction sensor is installed inside the magnetic ball. The positioning sensor and the electronic tag are embedded in the surface of the precast component. The output ends of the magnetic induction sensor and the positioning sensor are communicatively connected to the central control console. This device solves the problems of excessive flexibility and unbalanced hoisting in traditional hoisting methods by using the hoisting frame, making it convenient and reliable to use. Simultaneously, the detection mechanism monitors the stability of the hoisting process in real time, ensuring the safety of the hoisting process.

[0006] However, existing technologies still have the following problems in practical applications: 1. The hoisting device disclosed in CN119797134A has a relatively fixed ring frame structure. Although it is equipped with multiple lifting components, it is difficult to effectively hoist precast square components of different sizes, especially those whose sizes exceed the applicable range of the ring frame. For example, when encountering a precast concrete square culvert with a size much larger than the passage opening of the ring frame, the component cannot be smoothly connected to the lifting ring rod, rendering the device unusable.

[0007] The lifting frame structure described in announcement number CN116768027B has relatively fixed dimensions and layouts for the balance beam, connecting rods, and crossbeams. For square components of different sizes, it is difficult to ensure a perfect fit between the lifting frame and the component. For example, for small window frame components, which are relatively small in size, the connecting rods and crossbeams may occupy too much space when using this lifting frame, affecting the lifting operation and possibly failing to provide sufficient clamping force.

[0008] 2. Although square prefabricated components have regular shapes, components for different purposes may vary in edge shape, thickness, etc. Existing technologies are often designed for relatively standard square components. For some square components with special edge shapes (such as those with grooves or protrusions), traditional lifting tools are difficult to achieve a tight fit and stable fixation. Summary of the Invention

[0009] The purpose of this invention is to provide a hoisting device for prefabricated building components and its usage method. By setting up an adjustable extension arm and modular hoisting components, it can accurately adapt to square prefabricated components of different sizes and shapes, greatly improving the versatility of the device and its adaptability to different components.

[0010] To achieve the above objectives, the present invention provides the following technical solution: a hoisting device for prefabricated building components, comprising a crane and a hoisting device, wherein: the crane is a traveling crane, gantry crane, or crawler crane; the hoisting device is configured on the execution end of the crane; the crane includes a boom and a deployable hoisting assembly; the boom is a vertical rod, the top of the boom is provided with a lifting ring connected to a hook on the execution end, the bottom of the boom is provided with a connecting seat, a sliding sleeve is movably provided in the middle of the boom, the upper end of the sliding sleeve is vertically connected to a vertical rack, and the upper end of the boom is equipped with a gear device that meshes with the vertical rack and drives the sliding sleeve to move; the deployable hoisting assembly includes an extension arm, a connecting arm, and a hoisting module; the extension arm is provided in multiple sets and is arranged in a ring around the outer periphery of the connecting seat; the bottom end of the extension arm is hinged to the connecting seat; the extension arm is provided with a slotted hole in the middle; one end of the connecting arm is hinged to the sliding sleeve, and the other end of the connecting arm extends into the slotted hole and is connected to the slotted hole through a sliding shaft.

[0011] Preferably, the crane is a gantry crane, which includes a gantry frame, a guide rail located on the inner side of the top of the gantry frame, a power sliding seat that slides along the guide rail, and a main lifting mechanism mounted on the power sliding seat.

[0012] Preferably, the main lifting mechanism is a winch-type main lifting mechanism, a chain crane-type main lifting mechanism, an electric hoist-type main lifting mechanism, or a hydraulic lifting mechanism.

[0013] Winch type: The steel wire rope is wound and unwound by a drum driven by a motor and equipped with an electromagnetic brake. It is suitable for precise lifting and control of small and medium-sized components (such as precast concrete slabs and window frames). The lifting speed can reach 8~12m / min. It has low energy consumption and simple maintenance.

[0014] Chain crane type: It adopts a planetary gear reducer to drive the chain transmission, with a load capacity of 50~200 tons. It is suitable for hoisting heavy components such as large precast concrete culverts. It has strong impact resistance and can operate stably in complex terrain (such as slopes and uneven ground).

[0015] Electric hoist type: integrates motor, reducer and drum into one unit, with compact structure and flexible lifting height (6~30m adjustable), suitable for construction sites with limited space (such as basement, narrow pipe gallery).

[0016] Hydraulic lifting type: The hydraulic cylinder is driven to extend and retract by a high-pressure hydraulic pump. The output is stable and stepless speed regulation. It is especially suitable for the overall lifting of ultra-large components (such as bridge segments and large well shafts). The synchronization accuracy reaches ±0.5mm, avoiding deformation caused by uneven stress on the components.

[0017] Preferably, a lifting module is installed at the top of the extendable arm. The lifting module includes steel cables, a support frame, an I-beam slide, scissor clamps, and connecting lugs. The support frame is an I-beam structure formed by splicing two angle steels. Connecting lugs are provided on both sides of the upper end of the support frame. The support frame has a sliding I-beam slide, and a scissor clamp is installed at the lower end of the I-beam slide. The I-beam support frame can more evenly distribute stress, reducing the risk of deformation or damage caused by excessive localized stress, thereby improving the load-bearing capacity of the lifting module. During lifting, the connecting lugs can evenly transfer the weight and force of the component to the extendable arm and the entire lifting device, avoiding structural damage caused by concentrated stress.

[0018] Preferably, the scissor clamp includes scissor plate A, scissor plate B, clamping arm A, clamping arm B, and clamping seat. The upper ends of scissor plate A and scissor plate B are coaxially hinged to the lower end of the I-beam slide, and the lower ends of scissor plate A and scissor plate B are respectively hinged to clamping arm A and clamping arm B. The scissor-type structure allows clamping arm A and clamping arm B to achieve synchronous clamping and releasing actions through the opening and closing movement of the scissor plates. During the clamping process, the movement of the scissor plates enables the clamping arms to apply clamping force evenly, ensuring that the component is firmly clamped and not easily shaken or dislodged.

[0019] Preferably, clamping seats are installed on the inner sides of clamping arms A and B, and a limiting hook is provided at the upper end of clamping arm A to limit and fix clamping arm B. Preferably, the top of the extension arm is connected to the steel cable of the hoisting module via a rope buckle structure. The rope buckle structure includes 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 to the top of the extension arm. The bottom of the sleeve is provided with a top shaft seat. A threaded rod passes through the sleeve. The protruding end of the top of the threaded rod is provided with a handle. The protruding end of the bottom of the threaded rod is connected to the bottom shaft seat.

[0020] Preferably, the X-shaped rod 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 are respectively hinged to the top shaft seat and the bottom shaft seat, and the rear end of the X-shaped rod is connected to the rope buckle plate. The rope buckle plate is an arc-shaped plate with rope buckle grooves on both sides. The rope buckle grooves cooperate with the steel cable. The rope buckle plate moves with the threaded rod and is in a close state to fix the steel cable.

[0021] Preferably, the present invention also provides a method for using the above-mentioned hoisting device for prefabricated components of assembled buildings, comprising the following steps: 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. S2: Connect the lifting ring at the top of the boom to the execution end of the gantry crane's main lifting mechanism, ensuring a secure and loose connection. Then, operate the gantry crane to move the boom directly above the square component, aligning it with the component's centerline. 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. 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. 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. S6: After transporting the component above the placement position, slowly lower the component until it approaches the marked position.

[0022] Compared with the prior art, the beneficial effects of the present invention are: 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.

[0023] 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

[0024] Figure 1 This is a schematic diagram of the lifting device in Embodiment 1 of the present invention; Figure 2 This is a partial structural diagram of the boom and the deployable hoisting assembly in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the deployable hoisting assembly in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the scissor clamp in Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the structure of Embodiment 2 of the present invention; Figure 6 This is a schematic diagram showing the position of the rope buckle structure in Embodiment 3 of the present invention; Figure 7 This is a schematic diagram of the rope buckle structure in Embodiment 3 of the present invention.

[0025] 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

[0026] 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.

[0027] 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.

[0028] 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.

[0029] Example 1: Please refer to Figure 1This 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] Example 2: Please refer to Figure 5The present invention provides a technical solution: a hoisting device for prefabricated building components, including a crane and hoisting tools.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] In this embodiment, the crane is a gantry crane, a crawler crane, or a crane with a crane mechanism.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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: 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. 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. 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. 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. 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; S6: After transporting the component above the placement position, slowly lower the component until it approaches the marked position.

[0045] 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.

[0046] 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 prefabricated building component hoisting device, comprising a crane and a lifting device, characterized in that: the crane is a trolley crane, a gantry crane (3) or a caterpillar crane; the lifting device is arranged on the execution end of the crane, and the crane comprises a lifting rod (1) and an unfolding hoisting assembly (2); the lifting rod (1) is a vertical straight rod, the top of the lifting rod (1) is provided with a lifting ring (11) connected with a hook on the execution end, the bottom end of the lifting rod (1) is provided with a connecting seat (12), the middle of the lifting rod (1) is movably provided with a sliding sleeve (13), the upper end of the sliding sleeve (13) is vertically connected with a vertical rack, and the upper end of the lifting rod (1) is provided with a gear device (14) engaged with the vertical rack and driving the sliding sleeve (13) to move; the unfolding hoisting assembly (2) comprises extending arms (21), connecting arms (22) and a hoisting module, the extending arms (21) are arranged in multiple groups and are distributed in a ring shape along the outer periphery of the connecting seat (12), the bottom end of the extending arm (21) is hingedly connected with the connecting seat (12), and the middle of the extending arm (21) is provided with a slot; one end of the connecting arm (22) is hingedly connected with the sliding sleeve (13), and the other end of the connecting arm (22) extends into the slot and is connected with the slot through a sliding shaft.

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

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

4. The prefabricated building component hoisting device according to claim 1, characterized in that: The top end of the extending arm (21) is provided with the hoisting module, the hoisting module comprises a steel cable (23), a bracket (24), an I-shaped sliding seat (25), a scissor clamping seat (26) and a connecting lug (27), the bracket (24) is an I-shaped frame body formed by splicing two angle steels, the two sides of the upper end of the bracket (24) are provided with the connecting lug (27), the bracket (24) is provided with the slidingly arranged I-shaped sliding seat (25), and the lower end of the I-shaped sliding seat (25) is provided with the scissor clamping seat (26).

5. The prefabricated building component hoisting device according to claim 4, characterized in that: The scissor clamping seat (26) comprises a scissor plate A (261), a scissor plate B (262), a clamping arm A (263), a clamping arm B (264) and a clamping seat (265), the upper ends of the scissor plate A (261) and the scissor plate B (262) are coaxially hingedly connected with the lower end of the I-shaped sliding seat (25), and the lower ends of the scissor plate A (261) and the scissor plate B (262) are respectively hingedly connected with the clamping arm A (263) and the clamping arm B (264).

6. The prefabricated building component hoisting device according to claim 5, characterized in that: The inner sides of the clamping arm A (263) and the clamping arm B (264) are respectively provided with the clamping seat (265), and the upper end of the clamping arm A (263) is provided with a limiting hook for limiting and fixing the clamping arm B (264).

7. The prefabricated building component hoisting device according to claim 1, characterized in that: The top end of the extending arm (21) is connected with the steel cable (23) of the hoisting module through a rope buckle structure (4), and the rope buckle structure (4) comprises 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).

8. The prefabricated building component hoisting device according to claim 7, characterized in that: 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). A threaded rod (42) is inserted inside 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).

9. The prefabricated building component hoisting device according to claim 7, characterized in that: The X-shaped rod (45) is formed by two support rods 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).

10. The use of the hoisting device for prefabricated building components of the assembled construction according to any of claims 1 - 9, 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.

Images