A hoisting tool for precast molded components

Abstract

This utility model provides a lifting device for precast molded components, belonging to the field of lifting device technology. It includes a precast molded component and a combined lifting device. The combined lifting device includes a movable connector connecting the precast molded component and a combined lifting ring. The movable connector traverses the side plates on both sides of the precast molded component and abuts against the outer end face of the side plates. The combined lifting ring is sleeved on the movable connector and located in the cavity between the two side plates. The combined lifting device, with the movable connector traversing the side plates of the precast molded component and the combined lifting ring positioned in the cavity between the two side plates, solves the problem of pre-embedding lifting components when no concrete is poured. This enables the smooth lifting of various precast components such as insulated molded exterior walls, without the need for pre-embedding lifting components in the factory, setting up auxiliary reinforcement measures for lifting component anchoring, or using steel sleeves for pre-embedding and fixing, thus improving the production efficiency of precast components.

Description

Technical Field

[0001] This utility model belongs to the field of hoisting and lifting equipment technology, and relates to a hoisting and lifting equipment for prefabricated mold shell components. Background Technology

[0002] The precast components of existing prefabricated concrete buildings are mainly precast reinforced concrete components. The lifting parts used include lifting rings, lifting rods, and internal threaded sleeves. The metal lifting parts are mainly embedded in the reinforced concrete, and the precast components are demolded, transported, and hoisted using special lifting tools or slings.

[0003] In existing technologies, besides precast reinforced concrete components, other types of precast components also exist. These include assembled integrated reinforced steel insulation formwork exterior wall systems, assembled composite formwork systems, and assembled steel skeleton formwork systems. Since these types of precast components do not involve concrete pouring, lifting rings, lifting rods, internally threaded sleeves, and other lifting components cannot be pre-embedded within the components. Therefore, it is necessary to develop a new type of lifting component or lifting tool to ensure that these precast components can meet the requirements of the lifting process.

[0004] To overcome the shortcomings of existing technologies, industry professionals have continuously explored and proposed various solutions. For example, a Chinese patent discloses a through-type lifting device for heavy precast concrete columns [Application No.: 202422287948.1], which includes a steel sleeve pre-embedded and horizontally penetrating the concrete column, with a steel lifting shaft fitted onto the sleeve; two steel protective plates welded to both ends of the steel sleeve, both of which are pre-embedded within the concrete column; the steel lifting shaft extending from the center holes of the two steel protective plates at both ends; an enlarged head at each end of the steel lifting shaft, each enlarged head extending inward from the end of the steel lifting shaft into the opening of the steel sleeve; and a traction rope loop fitted around the portion of the enlarged head extending from the center hole of the steel protective plate. This lifting device ensures a secure, safe, and stable lifting process. However, it also has the following problems: this lifting device is specifically developed for heavy precast concrete columns and is mainly used for lifting precast concrete components. It requires pouring concrete, pre-embedding a steel sleeve with welded steel protective plates at both ends, and having the steel lifting shaft pass through the steel sleeve, with the load distributed across both ends of the steel lifting shaft. When precast components are not poured with concrete, such as assembled integrated steel-reinforced thermal insulation formwork exterior wall systems, assembled composite formwork systems, and assembled steel reinforcement skeleton clamping systems, steel sleeves cannot be pre-embedded and fixed, making it difficult to meet the hoisting requirements of such precast components. Utility Model Content

[0005] The purpose of this utility model is to address the above-mentioned problems by providing a hoisting tool for prefabricated mold shell components.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A hoisting device for a precast molded shell component includes the precast molded shell component and a combined hoisting device. The combined hoisting device includes a movable connector connecting the precast molded shell component and a combined lifting ring. The movable connector extends across the side plates on both sides of the precast molded shell component and abuts against the outer end face of the side plates. The combined lifting ring is sleeved on the movable connector and located in the cavity between the two side plates.

[0008] In the above-mentioned hoisting tool for a precast mold shell component, the movable connecting part includes a long screw and a nut disc. The long screw and the nut disc are respectively disposed on both sides of the precast mold shell component. The threaded end of the long screw passes through the through holes on the two side plates and is screwed to the nut disc.

[0009] In the hoisting tool for the aforementioned precast mold shell component, a tail plate is provided on the side of the long screw away from the threaded end.

[0010] In the hoisting tool for the precast mold shell component mentioned above, the diameter of the through hole is 2-3 mm larger than the diameter of the threaded end of the long screw.

[0011] In the aforementioned hoisting device for a precast molded component, the combined lifting ring includes an inverted U-shaped steel bar and a rectangular steel pipe welded to the open side of the inverted U-shaped steel bar.

[0012] In the hoisting tool for the aforementioned precast molded shell component, the length of the inverted U-shaped steel bar is greater than the distance between the through hole and the top of the side plate, and the length of the rectangular steel pipe is less than the distance between the two side plates.

[0013] In the hoisting equipment for the aforementioned precast molded shell component, the length of the weld formed between the inverted U-shaped steel bar and the rectangular steel pipe is at least 10 times the diameter of the inverted U-shaped steel bar.

[0014] In the aforementioned hoisting device for a precast molded shell component, the combined hoisting device is positioned on the upper side of the precast molded shell component.

[0015] In the aforementioned hoisting device for a precast molded shell component, at least two combined hoisting devices are provided on the precast molded shell component.

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] 1. The modular lifting device uses movable connectors to traverse the side panels of the precast formwork component. The combined lifting ring is placed in the cavity between the two side panels, which solves the problem of the lifting components not being able to be pre-embedded when there is no concrete pouring. This enables the smooth lifting of various precast components such as insulated formwork exterior walls. Moreover, it eliminates the need to pre-embed lifting components in the factory, the need to set up auxiliary reinforcement measures for lifting component anchoring, and the need to use steel sleeves for pre-embedding and fixing, thereby improving the production efficiency of precast components.

[0018] 2. The movable connector adopts a design of long screw and nut disc. The threaded end of the long screw passes through the through hole in the side plate and is screwed to the nut disc. There is no need to pre-embed the lifting parts in the factory, and there is no need to set up auxiliary reinforcement measures for lifting parts anchoring and steel sleeve pre-embedded fixation. This simplifies the production process, improves the production efficiency of prefabricated components, and the long screw and nut disc are connected by threads, making installation and disassembly simple. After the lifting is completed, it can be reused multiple times, saving costs.

[0019] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0020] Figure 1 This is a top view when the prefabricated mold shell component is a composite mold shell component;

[0021] Figure 2 This is the front view when the prefabricated mold shell component is a composite mold shell component;

[0022] Figure 3 This is a structural diagram of a combined lifting and hoisting device;

[0023] Figure 4 This is an exploded view of the movable connector;

[0024] Figure 5 This is the front view of the combination lifting ring;

[0025] Figure 6 This is the left view of the combination lifting rings;

[0026] Figure 7 This is a top view of a precast molded shell component that is an insulated molded shell exterior wall component;

[0027] Figure 8 This is the front view of a precast molded shell component that is an insulated molded shell exterior wall component. Detailed Implementation

[0028] like Figures 1-7 As shown, a hoisting device for a precast molded shell component includes a precast molded shell component 1 and a combined hoisting device 2. The combined hoisting device 2 includes a movable connector 3 connecting the precast molded shell component 1 and a combined lifting ring 4. The movable connector 3 extends across the side plates 5 on both sides of the precast molded shell component 1 and abuts against the outer end face of the side plates 5. The combined lifting ring 4 is sleeved on the movable connector 3 and located in the cavity 6 between the two side plates 5.

[0029] In this utility model, the combined lifting device traverses the side plate of the precast mold shell component through the movable connecting part, and the combined lifting ring is placed in the cavity between the two side plates. This solves the problem that the lifting parts cannot be pre-embedded when there is no concrete pouring, and realizes the smooth lifting of various precast components such as the thermal insulation mold shell exterior wall. Moreover, it does not require pre-embedding of lifting parts in the factory, setting up auxiliary reinforcement measures for anchoring lifting parts, or using steel sleeves for pre-embedding and fixing, which can improve the production efficiency of precast components.

[0030] Specifically, the movable connector 3 includes a long screw 7 and a nut disc 8, which are respectively located on both sides of the precast mold shell component 1. The threaded end of the long screw 7 passes through the through holes 9 on the two side plates 5 and is screwed to the nut disc 8. The movable connector adopts the design of a long screw and a nut disc. By screwing the threaded end of the long screw through the through holes of the side plates to the nut disc, there is no need to pre-embed lifting parts in the factory, no need to set up auxiliary reinforcement measures for lifting part anchoring, and no need for steel sleeve pre-embedded fixation. This simplifies the production process, improves the production efficiency of precast components, and the long screw and nut disc are connected by threads, making installation and disassembly simple. After hoisting is completed, it can be reused multiple times, saving costs.

[0031] Specifically, a tail plate 10 is provided on the side of the long screw 7 away from the threaded end. The tail plate on the long screw away from the threaded end enhances the contact stability between the long screw and the outer end face of the side plate of the precast mold shell component, prevents the long screw from coming out of the side plate during hoisting, and ensures the reliability of the hoisting connection.

[0032] Specifically, the diameter of the through hole 9 is 2-3 mm larger than the diameter of the threaded end of the long screw 7. This larger diameter facilitates the smooth passage of the long screw through the through hole in the side plate, reducing installation difficulty. Simultaneously, the reserved gap can accommodate a certain degree of installation error, making the installation of the lifting device more convenient and efficient.

[0033] Specifically, the combined lifting ring 4 includes an inverted U-shaped steel bar 11 and a rectangular steel pipe 12 welded to the open side of the inverted U-shaped steel bar 11. The combined lifting ring adopts a structure of welding inverted U-shaped steel bars and rectangular steel pipes. While meeting the lifting strength requirements, it is simpler in structure than traditional lifting components, easier to process and manufacture, and easier to install in the cavity of the side plate of the precast mold shell component.

[0034] Specifically, the length of the inverted U-shaped reinforcing bar 11 is greater than the distance between the through hole 9 and the top of the side plate 5, while the length of the rectangular steel pipe 12 is less than the distance between the two side plates 5. This combination of the inverted U-shaped reinforcing bar length and the distance between the through hole and the top of the side plate, along with the rectangular steel pipe length, ensures that the combined lifting ring is securely installed within the cavity of the side plate. Simultaneously, it effectively transmits force during hoisting, guaranteeing the safety and stability of the precast formwork component hoisting process.

[0035] Specifically, the length of the weld formed between the inverted U-shaped steel bar 11 and the rectangular steel pipe 12 shall be at least 10 times the diameter of the inverted U-shaped steel bar 11. This minimum weld length ensures the welding strength of the combined lifting ring, prevents weld breakage, improves the overall reliability of the combined lifting ring, and ensures safe lifting operations.

[0036] Specifically, the combined lifting device 2 is installed on the upper side of the precast formwork component 1. The installation of the combined lifting device on the upper side of the precast formwork component conforms to the mechanical principles of precast component lifting, makes the point of application of lifting force reasonable, facilitates lifting operation, ensures that the precast formwork component remains balanced during the lifting process, and avoids dangerous situations such as tilting or falling.

[0037] Specifically, at least two combined lifting devices 2 are provided on the precast formwork component 1. The provision of at least two combined lifting devices on the precast formwork component disperses the lifting force, avoids excessive force on a single point, clarifies the force transmission mechanism during the lifting process, makes the connection safer and more reliable, effectively improves the lifting efficiency of the component, and enhances the stability and safety of the lifting.

[0038] like Figure 1 and Figure 2 As shown, the precast mold shell component 1 is a composite mold shell component, which consists of two cement-based thin plates, panel tie members and steel reinforcement skeleton. The two cement-based thin plates are two side plates.

[0039] like Figure 7 and Figure 8 As shown, the precast mold shell component 1 is an insulated mold shell exterior wall component, which consists of an insulated panel, a detachable panel, panel tie rods and a steel reinforcement frame. The insulated panel and the detachable panel are two side panels.

[0040] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A hoisting spreader for precast formwork elements, comprising a precast formwork element (1) and a combined hoisting spreader (2), characterized in that The combined lifting device (2) includes a movable connector (3) connecting the precast mold shell component (1) and a combined lifting ring (4). The movable connector (3) runs through the side plates (5) on both sides of the precast mold shell component (1) and abuts against the outer end face of the side plates (5). The combined lifting ring (4) is sleeved on the movable connector (3) and located in the cavity (6) between the two side plates (5).

2. A hoist for precast formwork elements according to claim 1, characterised in that The movable connector (3) includes a long screw (7) and a nut disc (8). The long screw (7) and the nut disc (8) are respectively located on both sides of the precast mold shell component (1). The threaded end of the long screw (7) passes through the through hole (9) on the two side plates (5) and is screwed to the nut disc (8).

3. A hoist for precast formwork elements according to claim 2, characterised in that The long screw (7) is provided with a tail plate (10) on the side away from the threaded end.

4. A hoist for precast concrete panels as claimed in claim 2 wherein, The diameter of the through hole (9) is 2-3 mm larger than the diameter of the threaded end of the long screw (7).

5. A hoist for precast concrete panels as defined in claim 2, wherein, The combined lifting ring (4) includes an inverted U-shaped steel bar (11) and a rectangular steel pipe (12) welded to the open side of the inverted U-shaped steel bar (11).

6. A hoist for precast concrete panels as claimed in claim 5 wherein, The length of the inverted U-shaped steel bar (11) is greater than the distance between the top of the through hole (9) and the side plate (5), and the length of the rectangular steel pipe (12) is less than the distance between the two side plates (5).

7. A hoist for precast concrete panels as claimed in claim 5 wherein, The length of the weld formed between the inverted U-shaped steel bar (11) and the rectangular steel pipe (12) is at least 10 times the diameter of the inverted U-shaped steel bar (11).

8. A hoist for precast concrete panels as defined in claim 1, wherein, The combined hoisting device (2) is set on the upper side of the precast mold shell component (1).

9. A hoist for precast concrete panels as claimed in claim 8 wherein, The precast mold shell component (1) is provided with at least two combined lifting devices (2).

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