A hoisting and fixing device for a concrete prefabricated component

Abstract

The utility model provides a kind of concrete prefabricated component hoisting fixing device, including taut column, the lower end of the taut column is slid through the stabilizing frame, wherein the lower portion of the taut column is equipped with anti-drop disc and lifting hook, the upper end of the taut column is equipped with hoisting disc, hoisting disc is connected with lifting iron chain by the lifting ring of its own installation;The hoisting disc is elastically connected with connecting disc by taut spring, connecting disc is fixedly connected with stabilizing frame;The utility model pulls lifting hook to make taut column compression spring, after hooking spring elastic force ensures that lifting hook and shackle are closely connected, break away from the dependence on taut state of lifting iron chain, improve connection reliability;Stabilizing frame is formed by base, support leg etc. Limiting frame, contact with prefabricated component surface, limit its swing, avoid approaching lifting point, both guarantee hoisting safety, and reduce component damage, ensure engineering quality.

Description

Technical Field

[0001] This utility model belongs to the field of precast component hoisting technology, and in particular relates to a hoisting and fixing device for precast concrete components. Background Technology

[0002] In today's booming construction industry, precast concrete components have been widely used due to their significant advantages such as standardized production and efficient construction. After being meticulously manufactured in the factory, these precast components are transported to the construction site for the crucial hoisting operation. Currently, the mainstream traditional hoisting method involves connecting the hook of the hoisting equipment with the lifting rings on the precast concrete component itself to achieve the hoisting operation. However, this seemingly conventional hoisting method actually harbors many drawbacks.

[0003] In actual construction, the stability of the connection between the hook and the concrete lifting ring largely depends on the tension of the lifting chain. The complex and ever-changing construction site environment, frequent movement of lifting equipment, uncontrollable wind forces, or other unforeseen factors can all potentially cause the lifting chain to slacken. Once the chain loosens, the hook and lifting ring instantly lose their tight restraint, showing obvious signs of loosening and posing a risk of detachment. To ensure absolute safety during construction, workers must invest considerable effort in frequently and meticulously inspecting the connection between the hook and lifting ring. This undoubtedly increases labor and time costs significantly, severely slows down construction progress, and manual inspections are difficult to conduct in a real-time and comprehensive manner, failing to fundamentally eliminate safety hazards.

[0004] Furthermore, during hoisting operations using hooks and rings, the range of control over precast components is extremely limited due to the inherent limitation of a single lifting point. When the lifting equipment moves, the precast components sway due to inertia; in the event of wind, they are further displaced. Under the combined influence of these external forces, the precast components will swing dramatically around the lifting point. This violent swinging not only severely damages the stability of the precast components themselves but also further impacts the already fragile connection between the hook and ring. As the swing amplitude increases, the force between the hook and ring continuously changes, and the pressure and friction on the connection point far exceed normal ranges, greatly increasing the risk of wear, loosening, or even breakage. The consequences of an accident would be unimaginable.

[0005] Therefore, it is essential to invent a hoisting and fixing device for precast concrete components. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a hoisting and fixing device for precast concrete components, including a tensioning column, a stabilizing frame, an anti-detachment plate, a hook, a lifting plate, a lifting ring, a lifting chain, a tension spring, and a connecting plate. The lower end of the tensioning column slides through the stabilizing frame. An anti-detachment plate and a hook are installed below the tensioning column. A lifting plate is installed at the upper end of the tensioning column. The lifting plate is connected to the lifting chain through a lifting ring installed on it. The lifting plate is elastically connected to the connecting plate through the tension spring. The connecting plate is fixedly connected to the stabilizing frame.

[0007] Preferably, the stabilizer includes a base, a through hole, a mounting plate, legs, and leg seats. The base is fixedly connected to the connecting plate by fasteners. The tensioning column passes through the through hole in the center of the base. At least three mounting plates are fixedly installed on the base by fasteners. Each mounting plate is fixedly installed with a leg, and a leg seat is installed at the lower end of the leg.

[0008] Preferably, the base has a polygonal structure, and the through hole at the center of the base matches the shape of the tensioning column. The through hole is located directly above the lifting ring of the precast concrete component.

[0009] Preferably, the surface of the base is provided with mounting holes required for mounting the mounting plate and connecting plate; the surface of the precast concrete component is in contact with the leg base.

[0010] Preferably, the connecting disc is installed above the base, and the anti-detachment disc installed on the tensioning column is located below the base.

[0011] Preferably, the lower end of the tensioning column is provided with a thread that engages with the anti-detachment disc, and the hook installed at the lower end of the tensioning column is connected to the lifting ring of the precast concrete component.

[0012] Preferably, the tension spring installed between the lifting plate and the connecting plate is located on the outside of the tensioning column.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In this invention, the tension spring plays a crucial role in the anti-detachment design of the hook and shackle. During actual operation, when the worker pulls the hook, the tension column moves downwards due to the tight connection between the hook and the lower end of the tensioning column, compressing the tension spring. Once the hook and shackle are successfully engaged, the tension spring, relying on its strong elasticity, applies an upward force to the tensioning column, ensuring the hook remains tightly engaged with the shackle. This innovative design means the connection between the hook and shackle no longer solely depends on the tension of the suspended chain; regardless of the chain's operating conditions, the hook and shackle will not easily detach. Compared to traditional lifting methods, this significantly improves connection reliability, effectively preventing safety accidents caused by hook detachment, and providing a solid guarantee for the safety of construction workers and the smooth progress of the project.

[0015] The unique structure of this utility model's stabilizing frame provides strong support against the swaying motion of precast components. The stabilizing frame constructs a robust limiting framework around the lifting point, forming stable support on the surface of the precast concrete component through the coordinated action of the base, mounting plate, outriggers, and leg supports. When the precast component sways due to external forces such as the movement of lifting equipment or wind, the stabilizing frame provides powerful limiting. Because the leg supports are in close contact with the surface of the precast component, and the outriggers and mounting plate are rationally distributed, the swaying motion of the precast component will not be centered on the lifting point (i.e., the location of the hook and shackle). The stabilizing frame limits the swing range of the precast component, preventing it from getting too close to the lifting point, effectively reducing the impact on the stability of the hook and shackle connection caused by excessive swaying. This effective suppression of the swaying motion of the precast component not only improves the safety of the lifting process but also reduces collision damage to the precast component during transportation, increasing the integrity rate of the precast component and ensuring project quality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the stabilizer frame of this utility model before it is installed.

[0018] Figure 3 This is a structural schematic diagram of the stabilizer frame of this utility model.

[0019] In the picture:

[0020] 1. Tensioning column, 2. Stabilizing frame, 21. Base, 22. Through hole, 23. Mounting plate, 24. Support leg, 25. Leg seat, 3. Anti-detachment plate, 4. Hook, 5. Lifting plate, 6. Lifting chain, 7. Tensioning spring, 8. Connecting plate, 9. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. 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 should fall within the protection scope of the present invention.

[0022] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for 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 the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.

[0023] As attached Figure 1 To be continued Figure 3 As shown:

[0024] This utility model provides a hoisting and fixing device for precast concrete components, including a tensioning column 1, a stabilizing frame 2, an anti-detachment disc 3, a hook 4, a lifting plate 5, a lifting ring 6, a lifting chain 7, a tension spring 8, and a connecting plate 9. The lower end of the tensioning column 1 slides through the stabilizing frame 2. The anti-detachment disc 3 and the hook 4 are installed below the tensioning column 1. The lifting plate 5 is installed at the upper end of the tensioning column 1. The lifting plate 5 is connected to the lifting chain 7 through the lifting ring 6 installed on it. The lifting plate 5 is elastically connected to the connecting plate 9 through the tension spring 8. The connecting plate 9 is fixedly connected to the stabilizing frame 2.

[0025] Furthermore, the stabilizer 2 consists of a base 21, a through hole 22, mounting plates 23, legs 24, and leg seats 25. The base 21 is made of high-strength Q345B steel, which has good compressive strength and toughness, capable of withstanding the enormous pressure during the hoisting of precast concrete components. The base 21 is fixedly connected to the connecting plate 9 by fasteners such as M12 high-strength bolts, ensuring the stability of the connection. The tensioning column 1 passes through the through hole 22 in the center of the base 21. The inner wall of the through hole 22 is finely machined to form a clearance fit with the tensioning column 1, ensuring that the tensioning column 1 can slide smoothly up and down within the hole and also providing some guidance. At least three mounting plates 23 are fixedly installed on the base 21 by M12 high-strength bolts of the same specification. The mounting plates 23 are radially distributed along the edge of the base 21, and each mounting plate 23 is vertically fixed with a leg 24. The leg 24 is made of seamless steel pipe, possessing high bending resistance. The lower end of the outrigger 24 is equipped with a leg seat 25, which is a rectangular steel plate structure. The lower surface of the leg seat 25 is also equipped with an anti-slip rubber pad to increase the friction with the surface of the precast concrete component and prevent the device from sliding during hoisting.

[0026] Furthermore, the base 21 is designed with a hexagonal structure. This polygonal structure provides good stability and can evenly distribute the weight of the precast component during hoisting. The through hole 22 at the center of the base 21 matches the shape of the tensioning column 1. The through hole 22 can be circular or rectangular. Circular holes are simple to manufacture but lack anti-rotation properties, while rectangular holes are more complex to manufacture but provide anti-rotation properties, ensuring the stability of the tensioning column 1. Its diameter is designed to be 2-3 mm larger than the outer diameter of the tensioning column 1, ensuring that the tensioning column 1 can slide flexibly. The through hole 22 is precisely located above the lifting ring of the precast concrete component. During installation, measuring and positioning tools are used to ensure the accurate positioning of the base 21, allowing the hook 4 to connect smoothly with the lifting ring and ensuring a vertical and stable transmission path for the hoisting force.

[0027] Furthermore, the surface of the base 21 is provided with mounting holes required for the installation of the mounting plate 23 and the connecting plate 9. The diameter and depth of the mounting holes are compatible with the M12 high-strength bolts used. During installation, the mounting plate 23 is first fixed to the corresponding mounting hole position of the base 21 with bolts, and then the connecting plate 9 is placed on top of the base 21 and tightened by bolts passing through the mounting holes of the connecting plate 9 and the base 21. The surface of the precast concrete component is in contact with the leg 25. The upper surface of the leg 25 is polished to ensure a tight fit with the surface of the precast component, and multiple legs 25 provide common support to ensure that the precast component is subjected to uniform force during hoisting.

[0028] Furthermore, the connecting plate 9 is installed above the base 21. The connecting plate 9 is made of 45# steel and has undergone quenching treatment to enhance its hardness and wear resistance. The connecting plate 9 is tightly connected to the base 21 by high-strength bolts, and a rubber gasket is also placed between them to absorb shock and prevent loosening. The anti-detachment plate 3 installed on the tensioning column 1 is located below the base 21. The anti-detachment plate 3 is a circular steel plate with a diameter larger than the diameter of the through hole 22. The anti-detachment plate 3 can be firmly fixed to the tensioning column 1, effectively preventing the tensioning column 1 and the stabilizer 2 from separating.

[0029] Furthermore, the lower end of the tensioning column 1 is provided with threads that engage with the anti-detachment disc 3. These threads are fine-pitch threads, which offer good self-locking performance and high connection strength. A hook 4 installed at the lower end of the tensioning column 1 connects to the lifting ring of the precast concrete component. The hook 4 is manufactured using a forging process and is made of alloy steel, possessing high strength and high toughness. The hook 4 is connected to the lower end of the tensioning column 1 via a U-shaped buckle. A locking bolt is provided on the U-shaped buckle to ensure a secure connection between the hook 4 and the tensioning column 1, preventing it from detaching during hoisting.

[0030] Furthermore, the tension spring 8 installed between the lifting plate 5 and the connecting plate 9 is located on the outer side of the tensioning column 1. The tension spring 8 is a cylindrical helical compression spring made of 60Si2Mn spring steel, which has good elasticity and fatigue strength. The tension spring 8 is sleeved on the outside of the tensioning column 1, and its two ends are connected to the fixing lugs on the lifting plate 5 and the connecting plate 9 respectively by pins, ensuring that the tension spring 8 can stably provide elastic force when the tensioning column 1 moves up and down, so as to achieve stable connection between the hook and the lifting ring.

[0031] The working principle is as follows: First, assemble the stabilizer frame 2, and fix at least three mounting plates 23 to the radially distributed mounting holes on the edge of the base 21 using M12 high-strength bolts, so that the leg seats 25 at the lower end of the outriggers 24 are in contact with the surface of the precast component. Using measuring and positioning tools, ensure that the through hole 22 in the center of the base 21 is precisely located above the lifting ring of the precast component, and pass the tensioning column 1 through the through hole 22. At this time, the gap fit between the inner wall of the through hole 22 and the tensioning column 1 plays a guiding role. Then, connect the anti-detachment disc 3 to the lower end of the tensioning column 1 through the fine thread below the base 21, and then fix the connecting disc 9 above the base 21 with bolts, so that the tensioning spring 8 installed between the lifting disc 5 and the connecting disc 9 is sleeved on the outside of the tensioning column 1.

[0032] Next, pull the lifting ring 6 on the lifting plate 5 to lower the hook 4 and connect it with the lifting ring of the precast component. During the pulling of the hook 4, the tensioning column 1 moves downward to compress the tensioning spring 8. After the hook 4 is connected with the lifting ring of the precast component, the tensioning spring 8 pushes the lifting plate 5 upward with its own elastic force, which in turn drives the tensioning column 1, so that the hook 4 always maintains a tight connection with the lifting ring of the precast component. Even if the suspension chain 7 is not in a taut state, the connection can still be guaranteed to be stable.

[0033] During hoisting, the legs 25 of the stabilizer 2 are in close contact with the surface of the precast component, and multiple legs 25 provide support and evenly distribute the weight of the precast component. When the precast component is affected by external forces such as the movement of the hoisting equipment or wind, the limiting frame formed by the base 21, mounting plate 23, and outriggers 24 of the stabilizer 2 restricts the swing range of the precast component, prevents it from moving around the lifting point (i.e., the location of the hook and the lifting ring), prevents it from getting too close to the lifting point, and ensures the stability of the connection between the hook 4 and the lifting ring of the precast component. At the same time, the diameter of the anti-detachment plate 3 is larger than that of the through hole 22 to prevent the tensioning column 1 and the stabilizer 2 from detaching, ensuring the safety and reliability of the entire hoisting process.

[0034] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A hoisting and fixing device for precast concrete components, characterized in that, The device includes a tensioning column (1), a stabilizing frame (2), an anti-detachment disc (3), a hook (4), a lifting disc (5), a lifting ring (6), a lifting chain (7), a tensioning spring (8), and a connecting disc (9). The lower end of the tensioning column (1) slides through the stabilizing frame (2). The anti-detachment disc (3) and the hook (4) are installed below the tensioning column (1). The lifting disc (5) is installed at the upper end of the tensioning column (1). The lifting disc (5) is connected to the lifting chain (7) through the lifting ring (6) installed on itself. The lifting disc (5) is elastically connected to the connecting disc (9) through the tensioning spring (8). The connecting disc (9) is fixedly connected to the stabilizing frame (2).

2. The precast concrete component hoisting and fixing device as described in claim 1, characterized in that: The stabilizer (2) includes a base (21), a through hole (22), a mounting plate (23), legs (24) and leg seats (25). The base (21) is fixedly connected to the connecting plate (9) by fasteners. The tensioning column (1) passes through the through hole (22) in the center of the base (21). At least three mounting plates (23) are fixedly installed on the base (21) by fasteners. Each mounting plate (23) is fixedly installed with a leg (24). A leg seat (25) is installed at the lower end of the leg (24).

3. The precast concrete component hoisting and fixing device as described in claim 2, characterized in that: The base (21) is a polygonal structure. The through hole (22) in the center of the base (21) matches the shape of the tensioning column (1). The through hole (22) is located directly above the lifting ring of the precast concrete component.

4. The precast concrete component hoisting and fixing device as described in claim 3, characterized in that: The base (21) has mounting holes on its surface for mounting the mounting plate (23) and connecting plate (9); the surface of the precast concrete component is in contact with the leg seat (25).

5. The precast concrete component hoisting and fixing device as described in claim 4, characterized in that: The connecting disc (9) is installed above the base (21), and the anti-detachment disc (3) installed on the tensioning column (1) is located below the base (21).

6. The precast concrete component hoisting and fixing device as described in claim 5, characterized in that: The lower end of the tensioning column (1) is provided with a thread that engages with the anti-detachment disc (3), and the hook (4) installed at the lower end of the tensioning column (1) is connected to the lifting ring of the precast concrete component.

7. The precast concrete component hoisting and fixing device as described in claim 6, characterized in that: The tension spring (8) installed between the lifting plate (5) and the connecting plate (9) is located on the outside of the tensioning column (1).

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