A lifting tool for integral hoisting of steel cages
By designing a rebar cage hoisting device with a drive motor and multi-stage hooks, the problems of rebar cage detachment and verticality during hoisting were solved, achieving stable and safe rebar cage hoisting and improving construction quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE FOURTH ENG CO LTD OF CHINA RAILWAYNO 20 BUREAU GRP
- Filing Date
- 2025-07-13
- Publication Date
- 2026-06-30
AI Technical Summary
In the existing technology, there is a safety hazard of steel cage falling from a height during the hoisting process, and the steel cage cannot be guaranteed to be vertical after hoisting, which makes it difficult to enter the pile hole and affects the quality of pile formation.
A lifting device for the entire rebar cage was designed. A drive motor drives the disc to rotate, which in turn drives the push rod to push the slider to slide along the slide rail, thereby achieving dynamic adjustment of the horizontal position of the hook. A second hook is used to achieve multi-level connection, ensuring the vertical lifting of the rebar cage.
This improved the stability and safety of the rebar cage hoisting, avoided the problem of eccentric force, ensured that the rebar cage entered the pile hole vertically, and improved the construction quality.
Smart Images
Figure CN224429959U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel cage hoisting technology, specifically to a hoisting tool for the overall hoisting of steel cages. Background Technology
[0002] In civil engineering construction, during the hoisting of steel cages for the foundation of cast-in-place piles in high-rise buildings, it is common practice to tie the steel cage to the main reinforcement bars or spiral stirrups with wire. This method of tying the steel cage is arbitrary and not secure, which can easily cause the steel cage to fall from a height, posing a great safety hazard. Furthermore, after hoisting, it is impossible to ensure that the steel cage is vertical, and it will be difficult for the tilted steel cage to enter the pile hole. After it is in place, it is also impossible to ensure that the position of the steel cage is accurate, thus affecting the quality of pile formation. Utility Model Content
[0003] The purpose of this utility model is to provide a lifting tool for the overall hoisting of steel cages, which solves the problems of high-altitude falls caused by steel cage detachment during the existing steel cage hoisting process, and the inability to ensure the verticality of the steel cage after hoisting, making it difficult for the tilted steel cage to enter the pile hole.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a lifting device for integral rebar cages, comprising an installation plate, wherein several slide rails are fixedly connected at equal intervals on the lower surface of the installation plate, a slider is slidably connected on the slide rails, a fixing plate is fixedly connected to the lower surface of the slider, a hook is provided at the lower end of the fixing plate, a drive motor is installed at the center of the upper end of the installation plate, the output end of the drive motor passes through the installation plate and is provided with a disc, several push-pull rods are rotatably connected at equal intervals on the disc, and the other end of the push-pull rods is rotatably connected to the fixing plate.
[0005] The above structural design utilizes a drive motor to rotate a disc, which in turn drives a push-pull rod to slide a slider along a guide rail, thus dynamically adjusting the horizontal position of the hook. This design can flexibly adapt to the hoisting needs of steel cages of different sizes, avoiding eccentric stress problems caused by fixed hoisting points.
[0006] Preferably, a second hook is installed at the lower end of the hook.
[0007] With the above structural design, the addition of the second hook can realize multi-level connection, suspending multiple stirrups of the steel cage at the same time, which improves the stability and safety of the steel cage hoisting, while ensuring the verticality of the steel cage.
[0008] Preferably, the hook head is rotatably connected to a hook buckle, the end of the hook buckle extends into the hook head of the hook, a pull block is fixedly connected to the side wall of the hook buckle, and a return spring is connected between the pull block and the side wall of the hook.
[0009] The above structural design incorporates a mechanical interlock between the hook and the hook, preventing accidental disengagement due to vibration or collision during hoisting. The hook automatically closes via a return spring, while the pull block manually controls its opening and closing, making operation simple.
[0010] Preferably, the upper end of the second hook extends into the hook, and several positioning holes are equidistantly provided on the side wall of the second hook along the length direction of the second hook. The positioning bolt passes through the hook and the positioning holes to fix the hook and the second hook relative to each other.
[0011] With the above structural design, the cooperation between the positioning hole and the positioning bolt allows the second hook to slide and be fixed inside the hook, realizing the adjustment in the length direction and adapting to the hoisting requirements of different spacing between adjacent stirrups of the steel cage.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] 1. A drive motor rotates a disc, which in turn moves a push-pull rod to slide a slider along a rail, allowing for dynamic adjustment of the hook's horizontal position. This design flexibly adapts to the hoisting needs of steel cages of different sizes, avoiding eccentric stress problems caused by fixed lifting points.
[0014] 2. The addition of a second hook enables multi-level connections, allowing multiple stirrups of the rebar cage to be suspended simultaneously, which improves the stability and safety of the rebar cage hoisting, while ensuring the verticality of the rebar cage. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the structure of the second hook of this utility model;
[0017] Figure 3 This is a partial structural diagram of the hook of this utility model. Detailed Implementation
[0018] 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.
[0019] Please see Figures 1 to 3This utility model provides a technical solution: a hoisting tool for an integral rebar cage, including a mounting plate 1, which is a triangular steel plate. Three slide rails 2 are fixedly connected at equal intervals on the lower surface of the mounting plate 1. The slide rails 2 are located at the triangular part of the mounting plate 1, with one end facing the center of the mounting plate 1. A slider 3 is slidably connected to the slide rail 2. A fixing plate 4 is fixedly connected to the lower surface of the slider 3. A hook 8 is provided at the lower end of the fixing plate 4, and the upper end of the hook 8 is perpendicular to the plane of the fixing plate 4. The hook 8 is a forged steel part, and the inner diameter of the hook opening matches the diameter of the stirrups in the rebar cage. A drive motor 7 is installed at the center of the upper end of the mounting plate 1. The output end of the drive motor 7 passes through the mounting plate 1 and is provided with a disc 5. Three push-pull rods 6 are rotatably connected at equal intervals on the disc 5, and the other end of the push-pull rods 6 is rotatably connected to the fixing plate 4. Three lifting rings are fixedly connected at the top triangular part of the mounting plate 1 for use with hoisting equipment.
[0020] A second hook 9 is installed at the lower end of the hook 8. The second hook 9 is a forged steel part, and the inner diameter of the hook opening matches the diameter of the stirrups in the reinforcing cage.
[0021] The hook head of the hook 8 is rotatably connected to a hook buckle 12, the end of which extends into the hook opening of the hook 8. A pull block 14 is fixedly connected to the side wall of the hook buckle 12, and a return spring 13 is connected between the pull block 14 and the side wall of the hook 8. The hook buckle 12 is a U-shaped stainless steel part, rotatably connected to the hook head of the hook 8 by a pin. The pull block 14 is welded to the side wall of the hook buckle 12. The return spring 13 is a nitrogen spring, with its two ends fixed to the side wall of the hook 8 and the pull block 14, respectively.
[0022] The upper end of the second hook 9 extends into the hook 8. Several positioning holes 10 are equidistantly provided on the side wall of the second hook 9 along the length direction of the second hook 9. The positioning bolt 11 passes through the hook 8 and the positioning holes 10 to fix the hook 8 and the second hook 9 relative to each other.
[0023] Working principle: The user first adjusts the distance between hook 3 and second hook 9 according to the spacing between two adjacent stirrups of the steel cage to be hoisted. Hook 3 and second hook 9 are fixed by positioning bolt 11. The mounting plate 1 is placed above the steel cage. The drive motor 7 is started, and the drive motor 7 drives the disc 5 to rotate, which drives the push rod 6 to push the slider 3 to slide along the slide rail 2. The side walls of hook 8 and second hook 9 are close to the stirrups. At this time, the hook head is located directly below the stirrup. The hoisting device is lifted upward, and the stirrup enters the hook mouth of hook 8 and second hook 9 through hook buckle 12, and hoisting can be carried out. When the steel cage is hoisted to the designated position, pull the pull block 14, and then the hoisting device can be separated from the steel cage for subsequent recycling.
[0024] Contents not described in detail in this specification are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A lifting device for integral hoisting of steel cages, characterized in that: The device includes a mounting plate (1), on the lower surface of which several slide rails (2) are fixedly connected at equal intervals. A slider (3) is slidably connected on the slide rails (2). A fixing plate (4) is fixedly connected on the lower surface of the slider (3). A hook (8) is provided at the lower end of the fixing plate (4). A drive motor (7) is installed at the center of the upper end of the mounting plate (1). The output end of the drive motor (7) passes through the mounting plate (1) and is provided with a disc (5). Several push-pull rods (6) are rotatably connected at equal intervals on the disc (5). The other end of the push-pull rods (6) is rotatably connected to the fixing plate (4).
2. The lifting device for integral hoisting of a reinforcing cage according to claim 1, characterized in that: A second hook (9) is installed at the lower end of the hook (8).
3. The lifting device for integral hoisting of a reinforcing cage according to claim 1, characterized in that: The hook (8) is rotatably connected to the hook head and the hook buckle (12). The end of the hook buckle (12) extends into the hook opening of the hook (8). A pull block (14) is fixedly connected to the side wall of the hook buckle (12). A return spring (13) is connected between the pull block (14) and the side wall of the hook (8).
4. The integral lifting device for a reinforcing cage according to claim 2, characterized in that: The upper end of the second hook (9) extends into the hook (8). Several positioning holes (10) are equidistantly provided on the side wall of the second hook (9) along the length direction of the second hook (9). The positioning bolt (11) passes through the hook (8) and the positioning holes (10) to fix the hook (8) and the second hook (9) relative to each other.