Auxiliary lifting device for prefabricated floor

Abstract

The utility model discloses an auxiliary lifting appliance for prefabricated floor slab, including clamping frame, spacing hook and protection board, the clamping frame is by top surface, bottom surface and transition surface integral welding forming's U type structure, transition surface is with top surface, bottom surface's rear end vertical connection, sets up locking bolt on top surface, protection board sets up in the back of top surface, two spacing hooks are set up in the back of transition surface, two spacing hooks curvature radian is opposite, and the circumference of two spacing hooks is greater than the length of semicircle, when using, using clamping frame will prefabricated floor slab clamping fixed in prefabricated floor slab both sides, four clamping frames can lift floor slab, and the steel wire rope is passed from the floor bottom, and the steel wire rope is set up between two spacing hooks, and plays the anti -drop, slip effect when hoisting, and the board surface is provided with grid texture, and the concrete board surface is protected, the utility model guarantees the stability in hoisting process, and moreover, the floor surface is protected, and the safety of prefabricated floor slab hoisting process is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of building hoisting equipment, specifically relating to an auxiliary hoisting tool for precast floor slabs. Background Technology

[0002] Precast floor slabs, also known as prestressed concrete precast floor slabs, are concrete floor slabs that are prefabricated in a factory or prefabrication yard and then transported to the construction site for direct hoisting and use. They have the advantages of fast construction speed, stable quality, saving on formwork and supports, and being environmentally friendly and energy-saving.

[0003] During hoisting, slings or wire ropes are usually used to support the bottom of the precast floor slab. Once stable, the precast floor slab is lifted. Because the edges and corners of the precast floor slab are sharp, the edges and corners of the precast floor slab and the hoisting ropes are easily damaged during the actual hoisting process. Another situation is that the hoisting ropes may slip, causing the floor slab to tilt or fall, resulting in a safety accident.

[0004] Therefore, it is necessary to develop a safe and reliable auxiliary lifting tool to overcome the above-mentioned defects. Utility Model Content

[0005] To address the aforementioned problems, this utility model discloses an auxiliary lifting device for precast floor slabs, which can clamp and fix the precast floor slabs, enhance the stability of the lifting process, prevent damage to the edges and corners of the precast floor slabs and the lifting ropes, and improve the safety of the precast floor slab lifting process.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: An auxiliary lifting device for precast floor slabs includes a clamping frame, limiting hooks, and a protective plate. The clamping frame is a C-shaped structure integrally welded from a top surface, a bottom surface, and a transition surface. The transition surface is perpendicularly connected to the rear ends of the top and bottom surfaces. A threaded hole is provided on the top surface, and a locking bolt is provided in the threaded hole. The protective plate is located on the back side of the top surface. There are two limiting hooks, which are horizontally arranged on the back side of the transition surface. The first limiting hook is located above the second limiting hook. The curvatures of the first and second limiting hooks are opposite, and the circumference of the two limiting hooks is greater than the length of the semicircle.

[0007] As an improvement of this utility model, baffles are provided on the upper sides of the top plate.

[0008] As an improvement of this utility model, the protective plate and the bottom surface are provided with a grid texture.

[0009] As an improvement of this utility model, two locking bolts are provided on the top surface.

[0010] As an improvement of this utility model, the clamping frame and the baffle are made of metal plates with a thickness of ≥3mm.

[0011] As an improvement of this utility model, the inner side of the connection between the transition surface and the bottom surface is provided with a reinforcing rib.

[0012] The beneficial effects of this utility model are as follows: Clamping frames are used on both sides of the precast floor slab to clamp and fix it. Four clamping frames are sufficient to lift the floor slab. The wire rope passes through the bottom of the floor slab and is set between the upper and lower limit hooks. The wire rope limits the movement and prevents it from falling off during hoisting, thus preventing the wire rope from slipping. A grid texture is set on the opposite surface of the protective plate and the bottom surface to protect the concrete slab surface. This utility model not only ensures the stability during hoisting but also protects the surface of the floor slab, greatly improving the safety of the precast floor slab hoisting process and perfectly solving the problems in the background technology. Attached Figure Description

[0013] Figure 1 This is the front view of the present invention.

[0014] Figure 2 This is a diagram showing the usage state of this utility model.

[0015] Figure 3 This is a perspective view of the present invention.

[0016] List of identifiers in attached diagrams: 1. Clamping frame, 2. Limiting hook, 3. Protective plate, 4. Top surface, 5. Bottom surface, 6. Transition surface, 7. Locking bolt, 8. Baffle, 9. Grid texture, 10. Reinforcing rib, 11. Precast floor slab, 12. Auxiliary lifting tool. Detailed Implementation

[0017] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0018] As shown in the figure, the auxiliary lifting device for precast floor slabs described in this utility model mainly functions to: 1. prevent damage to the side bends of the precast floor slabs; 2. prevent the lifting ropes from slipping towards the middle, thereby increasing safety. Example

[0019] An auxiliary lifting device for precast floor slabs includes a clamping frame 1 and limiting hooks 2. The clamping frame 1 is a U-shaped structure integrally welded from a top surface 4, a bottom surface 5, and a transition surface 6. The transition surface 6 is perpendicularly connected to the rear ends of the top surface 4 and the bottom surface 5. A threaded hole is provided on the top surface 4, and a locking bolt 7 is provided in the threaded hole. Two limiting hooks 2 are provided, and the two limiting hooks are laterally positioned on the back of the transition surface 6. Figure 3As shown, the first limiting hook is positioned above the second limiting hook, the curvatures of the first and second limiting hooks are opposite, and the circumference of the two limiting hooks is greater than the length of the semicircle.

[0020] Before hoisting, clamping frame 1 is placed on the side of the precast floor slab, and locking bolts 7 are tightened at the top to clamp and fix the precast floor slab 11. Clamping frame 1 is made of metal plate with a thickness of ≥3mm. During hoisting, clamping frame 1 bears the force, so hoisting will not damage the side bends of the floor slab. When hoisting, all four clamping frames are used simultaneously to lift the floor slab. Figure 2 As shown, the wire rope passes through the bottom of the floor slab. When the wire rope passes through the side of the floor slab, it is set between the upper and lower limit hooks. Since the curvature of the first limit hook and the second limit hook are opposite, and the circumference of the two limit hooks is greater than the length of the semicircle, they play a limiting role during hoisting, preventing them from falling off and preventing the wire rope from sliding inward. Example

[0021] Based on Example 1, a protective plate 3 is added. The protective plate 3 is set on the back of the top surface 4. When the locking bolt 7 is tightened, the force is applied to the protective plate to protect the concrete slab surface. Example

[0022] The protective plate 3 and the bottom surface 5 have a grid texture 9 on their opposite surfaces.

[0023] The upper and lower surfaces in contact with the precast floor slab 11 are provided with a grid texture 9, which increases friction and prevents slipping, thereby further improving safety. Example

[0024] Baffles 8 are installed on both sides of the top plate 4. The wire rope comes up from below, passes through the left and right limits of the first limit hook and the second limit hook, and tilts upward at the junction of the transition surface and the top surface. Once the lifting begins, the wire rope is under force and its position is between the two baffles 8, which restricts the slippage of the wire rope and increases stability. The baffles 8 are also made of metal plates with a thickness of ≥3mm and will not deform. Example

[0025] The inner side of the connection between the transition surface 6 and the bottom surface 5 is provided with a reinforcing rib 10, which enhances the rigidity of the clamping frame 1 and extends its service life.

[0026] It should be noted that the above content merely illustrates the technical concept of this utility model and cannot be used to limit the scope of protection of this utility model. For those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and all such improvements and modifications fall within the scope of protection of the claims of this utility model.

Claims

1. An auxiliary lifting device for precast floor slabs, characterized in that: The device includes a clamping frame (1), a limiting hook (2), and a protective plate (3). The clamping frame (1) is a C-shaped structure integrally welded from a top surface (4), a bottom surface (5), and a transition surface (6). The transition surface (6) is vertically connected to the rear ends of the top surface (4) and the bottom surface (5). A threaded hole is provided on the top surface (4), and a locking bolt (7) is provided on the threaded hole. The protective plate (3) is located on the back of the top surface (4). There are two limiting hooks (2). The two limiting hooks (2) are horizontally located on the back of the transition surface (6). The first limiting hook is located above the second limiting hook. The curvatures of the first limiting hook and the second limiting hook are opposite, and the circumference of the two limiting hooks is greater than the length of the semicircle.

2. The auxiliary lifting device for precast floor slabs according to claim 1, characterized in that: Baffles (8) are provided on both sides above the top surface (4).

3. The auxiliary lifting device for precast floor slabs according to claim 1, characterized in that: The protective plate (3) and the bottom surface (5) are provided with a grid texture (9).

4. The auxiliary lifting device for precast floor slabs according to claim 1, characterized in that: Two locking bolts (7) are provided on the top surface (4).

5. The auxiliary lifting device for precast floor slabs according to claim 1, characterized in that: The clamping frame (1) and the baffle (8) are made of metal plates with a thickness of ≥3mm.

6. The auxiliary lifting device for precast floor slabs according to claim 1, characterized in that: The transition surface (6) and the bottom surface (5) are connected at the rear end and a reinforcing rib (10) is provided on the inner side.

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