A hoisting device for prefabricated assembly construction

Abstract

This utility model discloses a hoisting device for prefabricated assembly construction, relating to the field of prefabricated building technology. It includes a crossbeam and a gravity hoisting clamp. The gravity hoisting clamp includes a lifting rod and a tie rod. One end of the tie rod is hinged to the bottom end of the lifting rod, and the top end of the lifting rod is hinged to one end of the crossbeam. The bottom end of the tie rod is hinged to a clamping seat via a connecting rod. A buffer limiting component is provided on the top of the clamping seat. The buffer limiting component includes a mounting frame, and a guide slide rod is slidably inserted through the top of the inner wall of the mounting frame. This utility model achieves rigid contact buffering through rubber pads of the receiving component in the primary buffering stage, and elastic dynamic buffering through the cooperation of the buffer spring of the buffer limiting component and the guide slide rod in the secondary buffering stage. This dual buffering mechanism can effectively absorb dynamic loads such as the inertial force during hoisting and the impact force upon landing, preventing cracks or damage to prefabricated wall panels due to rigid collisions, and meeting the high-precision installation requirements of prefabricated components.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated building technology, specifically to a hoisting device for prefabricated assembly construction. Background Technology

[0002] With the promotion of prefabricated building technology, the construction method of transporting prefabricated components (such as wall panels and floor slabs) from the factory to the site for hoisting and assembly has become the industry mainstream. As the core equipment for installing prefabricated components, the stability and safety of hoisting devices directly affect construction quality and efficiency. However, existing hoisting devices for prefabricated assembly construction have the following shortcomings in practical applications: Insufficient buffering unloading function: Traditional hoisting devices mostly use rigid clamping structures, lacking effective buffering designs for inertial impacts during hoisting and impact forces upon landing. During unloading, the hoisted components are prone to violent collisions due to rigid contact, leading to surface damage, internal structural damage, and even safety accidents.

[0003] Clamping force adjustment relies on manual operation: Some devices require manual adjustment or additional power sources (such as hydraulic or electric mechanisms) to achieve clamping, which not only increases the complexity of operation, but also makes it difficult to dynamically and adaptively adjust the clamping force according to the weight of the component, and there is a risk that the component will fall off due to insufficient clamping force.

[0004] Lack of ease of maintenance and mobility: The buffer components (such as pads and springs) of the existing equipment are mostly fixed, and replacement is cumbersome after wear; at the same time, there is a lack of convenient moving structure under no-load conditions, which requires manual handling or relocation with the help of auxiliary equipment, reducing construction efficiency.

[0005] To address the aforementioned issues, this utility model provides a hoisting device for prefabricated assembly construction. Through a gravity-driven adaptive clamping mechanism, dual buffer protection components, and a modular detachable structure, it effectively solves the shortcomings of existing devices in terms of buffer unloading, clamping stability, and ease of operation, thus meeting the high-precision and high-safety construction requirements of prefabricated buildings. Utility Model Content

[0006] The purpose of this utility model is to provide a hoisting device for prefabricated assembly construction to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A hoisting device for prefabricated assembly construction includes a crossbeam and a gravity hoisting clamp. The gravity hoisting clamp includes a lifting rod and a tie rod. One end of the tie rod is hinged to the bottom end of the lifting rod, and the top end of the lifting rod is hinged to one end of the crossbeam. The bottom end of the pull rod is hinged to a clamping seat via a connecting rod, and the top of the clamping seat is provided with a buffer limiting component; The buffer limiting component includes a mounting frame, a guide rod is slidably passed through the top of the inner wall of the mounting frame, a bottom cone block is fixedly connected to the bottom end of the guide rod, a buffer spring is sleeved on the outer wall of the guide rod near the bottom end, and a receiving component is provided on the bottom surface of the clamping seat.

[0008] A further improvement of this utility model is that: a sliding hole is provided at the top of the inner wall of the mounting frame, and the outer wall of the guide slide rod is slidably connected to the inner wall of the sliding hole.

[0009] A further improvement of the present invention is that the receiving component includes a mounting base, a mounting groove is provided at the center of the bottom surface of the mounting base, a mounting bolt is provided on the inner wall of the mounting groove, and a mating hole is provided on the bottom surface of the clamping seat to mate with the mounting bolt.

[0010] A further improvement of this utility model is that the outer wall of the mounting bolt is threaded to the inner wall of the mating hole.

[0011] A further improvement of this utility model is that the bottom surface of the mounting block is rotatably connected to a movable wheel.

[0012] A further improvement of this utility model is that a rubber pad is fixedly connected to the bottom surface of the mounting base.

[0013] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows: This invention provides a hoisting device for prefabricated assembly construction. Through a hinged four-bar linkage mechanism of the lifting rod, tie rod, and clamping seat, the clamping seat is driven to retract inwards by the gravity of the prefabricated wall panel being hoisted, forming a "gravity clamp" structure. This design requires no additional power source and can automatically adjust the clamping force according to the load weight, ensuring the wall panel remains stable and does not detach during hoisting, significantly improving construction safety and reliability.

[0014] This invention provides a hoisting device for prefabricated assembly construction. The primary buffering mechanism achieves rigid contact cushioning through rubber pads on the receiving components, while the secondary buffering mechanism achieves elastic dynamic cushioning through the cooperation of the buffer springs and guide rods in the buffer limiting components. This dual buffering mechanism effectively absorbs dynamic loads such as inertial forces during hoisting and impact forces upon landing, preventing cracks or damage to prefabricated wall panels due to rigid collisions and meeting the high-precision installation requirements of prefabricated components.

[0015] This utility model provides a hoisting device for prefabricated assembly construction. The receiving component is detachably connected to the clamping seat by mounting bolts, which facilitates quick replacement of worn rubber pads or moving wheels and reduces maintenance costs. The moving wheels on the bottom surface of the mounting block support the device to move easily when there is no load. Combined with the self-adjusting capability of the hinge structure, it significantly improves the device relocation efficiency and operation convenience on the construction site and meets the high-frequency hoisting needs of prefabricated assembly construction. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a top view of the structure of this utility model; Figure 3 This is a schematic diagram of the clamping base structure of this utility model; Figure 4 This is a schematic diagram of the receiving component structure of this utility model.

[0017] In the diagram: 1. Crossbeam; 2. Gravity lifting clamp; 3. Tie rod; 4. Clamping seat; 5. Buffer limit assembly; 6. Lifting rod; 7. Mounting frame; 8. Guide slide rod; 9. Buffer spring; 10. Bottom cone block; 11. Support assembly; 12. Moving wheel; 13. Mounting groove; 14. Mounting bolt; 15. Connecting hole; 16. Mounting base block. Detailed Implementation

[0018] In the description of this utility model, 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 utility model based on the specific circumstances.

[0019] The present invention will be further described in detail below with reference to embodiments: Example 1 like Figure 1-4 As shown, this utility model provides a hoisting device for prefabricated assembly construction, including a crossbeam 1 and a gravity hoisting clamp 2. The gravity hoisting clamp 2 includes a lifting rod 6 and a tie rod 3. One end of the tie rod 3 is hinged to the bottom end of the lifting rod 6, and the top end of the lifting rod 6 is hinged to one end of the crossbeam 1. The bottom end of the pull rod 3 is hinged to a clamping seat 4 via a connecting rod, and the top of the clamping seat 4 is provided with a buffer limiting component 5; The buffer limiting component 5 includes a mounting frame 7, a guide slide rod 8 is slidably passed through the top of the inner wall of the mounting frame 7, a bottom cone block 10 is fixedly connected to the bottom end of the guide slide rod 8, a buffer spring 9 is sleeved on the outer wall of the guide slide rod 8 near the bottom end, and a receiving component 11 is provided on the bottom surface of the clamping seat 4.

[0020] The top of the inner wall of the mounting frame 7 is provided with a sliding hole, and the outer wall of the guide slide rod 8 is slidably connected to the inner wall of the sliding hole.

[0021] The receiving component 11 includes a mounting base 16, a mounting groove 13 is provided at the center of the bottom surface of the mounting base 16, a mounting bolt 14 is provided on the inner wall of the mounting groove 13, and a mating hole 15 is provided on the bottom surface of the clamping seat 4 to mate with the mounting bolt 14.

[0022] Example 2 like Figure 1-4 As shown, based on Embodiment 1, this utility model provides a technical solution: preferably, the outer wall of the mounting bolt 14 is threadedly connected to the inner wall of the mating hole 15.

[0023] The bottom surface of the mounting block 16 is rotatably connected to a movable wheel 12.

[0024] A rubber pad is fixedly connected to the bottom surface of the mounting base 16.

[0025] The working principle of this prefabricated assembly construction hoisting device will be explained in detail below.

[0026] like Figure 1-4 As shown, the prefabricated assembly construction hoisting device provided by this utility model achieves stable clamping and buffer protection of prefabricated wall panels through the coordinated design of gravity hoisting clamps and double buffer structures. Its working principle is as follows: I. Gravity Clamping Principle When the lifting device is used to lift prefabricated wall panels, the crossbeam 1 is connected to the external lifting equipment through the hinge structure at the top of the lifting rod 6. As the lifting equipment rises, the lifting rod 6 drives the tie rod 3 to move upward. Since one end of the tie rod 3 is hinged to the bottom end of the lifting rod 6 and the other end is hinged to the clamping seat 4 through the connecting rod, a rotatable four-bar linkage is formed. At this time, the weight of the prefabricated wall panel is transmitted to the tie rod 3 through the clamping seat 4, causing the hinge point between the tie rod 3 and the lifting rod 6 to generate a downward pulling force, forcing the two clamping seats 4 to retract inward, forming a "gravity clamp" structure, that is, a gravity clamp structure formed by the gravity lifting clamp 2, thereby generating clamping force on both sides of the wall panel and achieving stable lifting. II. Dual Buffer Protection Mechanism 1. Primary buffer: Rigid buffer supporting component 11 In the receiving component 11 on the bottom surface of the clamping base 4, the rubber pad on the bottom surface of the mounting block 16 is the first to contact the ground or wall panel surface when the hoisting device lands. The rubber pad absorbs the initial impact force through its own elastic deformation, avoiding direct rigid collision between the clamping base 4 and the suspended object, thus playing an initial buffering role. At the same time, the mounting block 16 is threadedly connected to the mating hole 15 on the bottom surface of the clamping base 4 through the mounting bolt 14, ensuring a stable connection between the receiving component 11 and the clamping base 4 and transmitting the buffering force. 2. Secondary buffer: The elastic buffer of the buffer limiting component 5. When the clamping seat 4 is subjected to impact forces, such as the inertial force during lifting or the impact of landing, the guide slide rod 8 in the sliding hole at the top of the inner wall of the mounting frame 7 can slide axially. The bottom cone block 10 at the bottom of the guide slide rod 8 cooperates with the internal structure of the mounting frame 7 to limit the sliding stroke and avoid excessive displacement; at the same time, the buffer spring 9 sleeved on the guide slide rod 8 is compressed or stretched when the slide rod slides, absorbing and dissipating the impact energy through elastic deformation, that is, the buffer spring 9 on the guide slide rod 8 provides double buffering. This structure achieves dynamic buffering of the clamping seat 4 through the elastic force of the spring and the limiting effect of the guide slide rod 8, further reducing the impact force on the suspended object and preventing injury from falling. III. Implementation of Auxiliary Functions 1. Easy to move The base block 16 is connected to the movable wheels 12, which can be rotated on the bottom surface. When the hoisting device is on the ground and not under load, the movable wheels 12 can be used to push the entire device to move horizontally on the ground, which facilitates the position adjustment on the construction site and improves the convenience of operation. 2. Structural stability The hinged structure of the lifting rod 6, the crossbeam rod 1, and the tie rod 3 forms an adaptive and adjustable mechanical support system, ensuring that the clamping force is dynamically balanced with gravity during the hoisting process; the threaded connection between the mounting bolt 14 and the mating hole 15 ensures the detachable and stable installation of the receiving component 11 and the clamping seat 4, which is convenient for later maintenance and replacement of parts. IV. Work Process Summary Installation preparation: Fix the receiving component 11 to the bottom surface of the clamping seat 4 with the mounting bolts 14, make the moving wheel 12 contact the ground with the rubber pad, and the device is in the state of waiting to be hoisted. Lifting process: The lifting equipment lifts the crossbeam 1, and the gravity lifting clamp 2 automatically clamps itself using the gravity of the wall panel through the hinge structure of the tie rod 3 and the clamping seat 4; the buffer spring 9 is in its natural state, ready to absorb dynamic impact. Buffer protection: At the moment of lifting or landing, the rubber pad block is the first-level buffer to contact the interface first, and the buffer spring 9 slides with the guide slide rod 8 to compress the second-level buffer, which reduces the impact with a dual action; the bottom cone block 10 cooperates with the mounting frame 7 to limit the travel of the slide rod and avoid excessive buffering. Relocation and disassembly: After hoisting, the supporting component 11 can be easily disassembled by moving the device with the moving wheels 12 and loosening the mounting bolts 14, meeting the needs of different construction scenarios.

[0027] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A hoisting device for prefabricated assembly construction, comprising a crossbeam (1) and a gravity hoisting clamp (2), characterized in that: The gravity lifting clamp (2) includes a lifting rod (6) and a tie rod (3). One end of the tie rod (3) is hinged to the bottom end of the lifting rod (6), and the top end of the lifting rod (6) is hinged to one end of the crossbeam (1). The bottom end of the pull rod (3) is hinged to a clamping seat (4) via a connecting rod, and a buffer limiting component (5) is provided on the top of the clamping seat (4). The buffer limiting component (5) includes a mounting frame (7), a guide slide rod (8) is slidably passed through the top of the inner wall of the mounting frame (7), a bottom cone block (10) is fixedly connected to the bottom end of the guide slide rod (8), a buffer spring (9) is sleeved on the outer wall of the guide slide rod (8) near the bottom end, and a receiving component (11) is provided on the bottom surface of the clamping seat (4).

2. The hoisting device for prefabricated assembly construction according to claim 1, characterized in that: The top of the inner wall of the mounting frame (7) is provided with a sliding hole, and the outer wall of the guide slide rod (8) is slidably connected to the inner wall of the sliding hole.

3. The hoisting device for prefabricated assembly construction according to claim 1, characterized in that: The receiving component (11) includes a mounting base (16), a mounting groove (13) is provided at the center of the bottom surface of the mounting base (16), a mounting bolt (14) is provided on the inner wall of the mounting groove (13), and a docking hole (15) is provided on the bottom surface of the clamping seat (4) to engage with the mounting bolt (14).

4. The hoisting device for prefabricated assembly construction according to claim 3, characterized in that: The outer wall of the mounting bolt (14) is threaded to the inner wall of the mating hole (15).

5. A hoisting device for prefabricated assembly construction according to claim 3, characterized in that: The bottom surface of the mounting block (16) is rotatably connected to a movable wheel (12).

6. A hoisting device for prefabricated assembly construction according to claim 3, characterized in that: A rubber pad is fixedly connected to the bottom surface of the mounting base (16).

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