Prestressed hollow slab hoisting device

Abstract

The utility model relates to hollow core slab technical field discloses a prestressed hollow core slab hoisting device, including bearing frame, two mobile assemblies are installed on the bearing frame, the mobile assembly can adjust interval according to hollow core slab size, the lower extreme of mobile assembly is installed with clamping assembly, the clamping assembly includes the installation box of fixed connection in the lower extreme of mobile assembly, the installation box lower extreme opening, the bottom surface center position rotationally connected with gear of installation box, the bottom surface of installation box is fixedly connected with slide rail in the left and right sides symmetry of gear, the slide rail is connected with the clamping jaw of sliding on, the utility model mainly solves the hoisting device of prestressed hollow core slab in the existing prestressed hollow core slab in hoisting process and easily along prestressed hollow core slab sliding, lead to the problem that there is hidden danger in hoisting process, solve the problem that the lifting rope is inconvenient to take out after hoisting is completed simultaneously, influence the work efficiency of staff.

Description

Technical Field

[0001] This utility model relates to the field of hollow slab technology, specifically a prestressed hollow slab hoisting device. Background Technology

[0002] With the vigorous development of infrastructure in my country, prestressed hollow slabs have been widely adopted in recent years due to their advantages such as large span, high load-bearing capacity, small dimensional errors, and good flatness. However, some drawbacks have gradually emerged during this process, especially the hoisting of such large-span precast components. Current hoisting methods for prestressed hollow slabs involve lifting them from both ends based on the span. However, during high-altitude hoisting of large-span prestressed hollow slabs, the hoisting ropes are prone to slipping along the slab, posing safety hazards. Furthermore, the hoisting ropes are difficult to remove after hoisting, affecting the efficiency of the workers. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a prestressed hollow slab hoisting device, which mainly solves the problem that the hoisting ropes of existing prestressed hollow slab hoisting devices tend to slide along the prestressed hollow slab during hoisting, leading to safety hazards during the hoisting process. It also solves the problem that it is inconvenient to remove the hoisting ropes after hoisting, which affects the work efficiency of the staff.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a prestressed hollow slab hoisting device, comprising a support frame, on which two moving components are mounted. The moving components can adjust their spacing according to the size of the hollow slab. A clamping component is mounted at the lower end of the moving components. The clamping component includes a mounting box fixedly connected to the lower end of the moving components. The mounting box has an opening at its lower end. A gear is rotatably connected to the center of the bottom surface of the mounting box. Slide rails are symmetrically fixedly connected to the bottom surface of the mounting box on the left and right sides of the gear. Claws are slidably connected to the slide rails. A rack is fixedly connected to the side of the claws closest to the gear. Both racks mesh with the gear.

[0005] The above structural design, through the gear and rack transmission mechanism of the clamping component, enables the grippers to stably hold the sides of the hollow slab. By using the grippers instead of lifting ropes, slippage of the lifting ropes during hoisting is prevented, thus improving the safety of high-altitude operations. The moving component can adjust the spacing according to hollow slabs of different sizes, enhancing the versatility of the device and reducing adaptation problems caused by differences in slab size.

[0006] Preferably, one end of the mounting box is provided with an electric push rod, the piston rod of which passes through the mounting box and is fixedly connected to the gripper.

[0007] By adopting the above structural design, one gripper is controlled to move by an electric push rod, while the other gripper moves in the opposite direction by the transmission action of a gear and rack, so as to achieve precise displacement of the gripper, ensure the uniformity of clamping position and force, and further improve the stability of hoisting.

[0008] Preferably, the support frame is an I-beam.

[0009] With the above structural design, the I-beam has excellent bending and compressive strength, which can effectively bear the weight of large-span hollow slabs and prevent the load-bearing frame from deforming or breaking; moreover, it is easy to obtain materials and simple to maintain, making it suitable for large-scale applications.

[0010] Preferably, the movable component includes a U-shaped frame that engages with the lower flange of the support frame. Two movable wheels are symmetrically rotatably connected to the upper end of the U-shaped frame. The movable wheels are slidably connected to the support frame. A positioning bolt is threaded onto the side wall of the U-shaped frame. One end of the positioning bolt passes through the U-shaped frame and abuts against the support frame.

[0011] With the above structural design, the moving wheels allow the U-shaped frame to slide along the support frame, and the positioning bolts lock the position, enabling quick and precise adjustment to meet the needs of hollow slabs of different sizes.

[0012] Preferably, two lifting rings are symmetrically fixedly connected to the upper surface of the support frame near the end position.

[0013] With the above structural design, the lifting rings are symmetrically positioned and close to the ends, which balances the load-bearing frame during lifting, avoids the risk of tilting or overturning, and improves the stability of lifting.

[0014] Compared with the prior art, this utility model provides a hoisting device suitable for wave piles, which has the following beneficial effects:

[0015] The clamping assembly utilizes a rack and pinion transmission mechanism to stably hold the sides of the hollow slab. By replacing the lifting rope with the clamping claw, slippage of the rope during hoisting is prevented, thus improving the safety of high-altitude operations. The movable assembly allows for adjustable spacing to accommodate hollow slabs of different sizes, enhancing the device's versatility and reducing compatibility issues caused by variations in slab dimensions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the support frame of this utility model;

[0017] Figure 2 This is a schematic diagram of the clamping assembly of this utility model;

[0018] Figure 3 This is a bottom view of the clamping assembly of this utility model;

[0019] Figure 4This is a side view of the mobile component of this utility model. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 This utility model provides a prestressed hollow slab hoisting device, including a support frame 1. Two movable components 2 are mounted on the support frame 1, symmetrically arranged and slidable along the support frame 1 with adjustable spacing to accommodate hollow slabs of different sizes. A clamping assembly is mounted at the lower end of each movable component 2. The clamping assembly includes a mounting box 3 fixedly connected to the lower end of the movable component 2. The mounting box 3 has an open lower end, and a gear 7 is rotatably connected to the center of its bottom surface. Slide rails 8 are symmetrically fixedly connected to the bottom surface of the mounting box 3 on the left and right sides of the gear 7. Grippers 5 are slidably connected to the slide rails 8, and racks 6 are fixedly connected to the side of each gripper 5 closest to the gear 7. Both racks 6 mesh with the gear 7.

[0022] An electric push rod 4 is provided at one end of the mounting box 3. The piston rod of the electric push rod 4 passes through the mounting box 3 and is fixedly connected to the clamp 5.

[0023] The support frame 1 is an I-beam.

[0024] The movable component 2 includes a U-shaped frame 201 that engages with the lower flange of the support frame 1. Two movable wheels 202 are symmetrically rotatably connected to the upper end of the U-shaped frame 201. The movable wheels 202 are slidably connected to the support frame 1. A positioning bolt 203 is threaded onto the side wall of the U-shaped frame 201. One end of the positioning bolt 203 passes through the U-shaped frame 201 and abuts against the support frame 1.

[0025] Two lifting rings 9 are symmetrically fixedly connected to the upper surface of the support frame 1 near the end position.

[0026] Working principle:

[0027] First, the operator adjusts the distance between the two moving components 2 according to the size of the hollow slab to be hoisted. Loosen the positioning bolt 203 and push the U-shaped frame 201 along the lower flange of the I-beam of the support frame 1 to a suitable position; rotate the positioning bolt 203 to press it against the side of the I-beam, locking the position of the moving component 2. Connect the hoisting device to the lifting equipment via the lifting ring 9 and slowly lower it above the hollow slab; activate the electric push rod 4 to push the gripper 5 along the slide rail 8 inwards. Through the meshing transmission of the gear 7 and rack 6, the grippers 5 on both sides close synchronously; the grippers 5 clamp from the grooves on both sides of the hollow slab, and the self-locking characteristics of the gear 7 and rack 6 prevent slippage or loosening during clamping. After confirming that the grippers 5 are firmly clamped, the lifting equipment slowly lifts the slab; during high-altitude transportation, the high rigidity of the I-beam support frame 1 ensures overall stability and reduces the risk of swaying. After the hollow slab is hoisted to the designated position, the electric push rod 4 is activated in reverse to open the gripper 5 outward and release the hollow slab; thus completing one hoisting operation of the hollow slab.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prestressed hollow slab hoisting device, characterized in that: The device includes a support frame (1), on which two moving components (2) are installed. The moving components (2) can adjust the spacing according to the size of the hollow plate. A clamping component is installed at the lower end of the moving components (2). The clamping component includes a mounting box (3) fixedly connected to the lower end of the moving components (2). The lower end of the mounting box (3) is open. A gear (7) is rotatably connected to the center of the bottom surface of the mounting box (3). Slide rails (8) are symmetrically fixedly connected to the left and right sides of the gear (7) on the bottom surface of the mounting box (3). A gripper (5) is slidably connected to the slide rail (8). A rack (6) is fixedly connected to the side of the gripper (5) near the gear (7). Both racks (6) mesh with the gear (7).

2. The prestressed hollow slab hoisting device according to claim 1, characterized in that: An electric push rod (4) is provided at one end of the mounting box (3). The piston rod of the electric push rod (4) passes through the mounting box (3) and is fixedly connected to the gripper (5).

3. The prestressed hollow slab hoisting device according to claim 1, characterized in that: The support frame (1) is an I-beam.

4. The prestressed hollow slab hoisting device according to claim 1, characterized in that: The movable component (2) includes a U-shaped frame (201) that engages with the lower flange of the support frame (1). Two movable wheels (202) are symmetrically rotatably connected to the upper end of the U-shaped frame (201). The movable wheels (202) are slidably connected to the support frame (1). A positioning bolt (203) is threaded onto the side wall of the U-shaped frame (201). One end of the positioning bolt (203) passes through the U-shaped frame (201) and abuts against the support frame (1).

5. The prestressed hollow slab hoisting device according to claim 1, characterized in that: Two lifting rings (9) are symmetrically fixedly connected to the upper surface of the support frame (1) near the end position.

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