Laminated slab hanging bracket
The lifting frame with static and dynamic pulley systems addresses localized stress imbalances in precast slabs by dynamically adjusting to slab movements, reducing cracking and costs.
Patent Information
- Application Number
- CN202422470168.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-10-12
AI Technical Summary
The existing laminated plate hanger cannot be automatically adjusted with the shaking of the laminated plate during the lifting process, resulting in local uneven stress and cracking, increasing lifting cost and reducing efficiency.
A laminated plate hanger is designed, and a sliding lifting set combining a static pulley set and a moving pulley set is used to adjust the sliding rope and hook to achieve self-balancing of the laminated plate during the lifting process and disperse local stress.
Effectively reduce the scrap rate during the lifting process of laminated plates, improve lifting efficiency and speed, and reduce costs.
Smart Images
Figure CN223102516U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of hoisting precast composite floor slabs, and relates to an auxiliary hoisting mechanism, in particular to a composite slab hanger. Background Art
[0002] The composite floor slab has good integrity and continuity, which is beneficial to enhancing the seismic performance of buildings. In addition, the use of composite floor slabs in construction can effectively save formwork and reduce on-site steel bar operations. The composite slab can be produced in a factory, which can greatly reduce the on-site construction difficulty and construction period, and has high construction efficiency. Therefore, in order to actively respond to national policies and meet the relevant requirements of building assembly rate, the floor slabs of some engineering structures often adopt the construction technology of combining PC composite floor slabs with cast-in-place slabs.
[0003] During the hoisting process of the composite slab, the composite slab will swing as the hoisting height and angle are adjusted. The existing composite slab hanger cannot automatically adjust with the swing of the composite slab, which will cause uneven local stress of the composite slab and cracking. The cracked composite slab cannot be used continuously and can only be scrapped. To solve this problem, the hoisting height and rotation speed of the composite slab are often controlled, which leads to an increase in the hoisting cost and a decrease in the efficiency of the composite slab hoisting. Therefore, it is necessary to provide a new hanger solution to reduce the scrapping rate of the composite slab during hoisting and improve the hoisting efficiency. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a composite slab hanger to solve the technical problems in the prior art that the hanger cannot automatically adjust with the swing of the composite slab, resulting in local cracking of the composite slab, slow hoisting speed and high hoisting cost.
[0005] To achieve the above purpose, the specific technical solution of the utility model is as follows:
[0006] A composite slab hanger, which includes a main frame body and a sliding hoisting group arranged on the main frame body. The number of the sliding hoisting groups is at least two, and each sliding hoisting group includes a lifting lug, a pulley block, a hoisting rope and a hook. The pulley block includes a fixed pulley block. The number of the lifting lugs is two, and they are fixed at both ends of the main frame body. The fixed pulley block is fixed between the two lifting lugs through a fixed pulley seat and has a degree of freedom of rotating relative to its own axis;
[0007] One end of the hoisting rope is fixed on one of the lifting lugs, and the other end passes through the upper chute of the fixed pulley block and is fixed on the other lifting lug. The number of the hooks is two, and they are respectively arranged on the hoisting ropes between the fixed pulley block and the two lifting lugs. The length of the hoisting rope is greater than the distance between the two lifting lugs and has a degree of freedom of sliding relative to the fixed pulley block.
[0008] A set of the sliding hoisting group includes two static pulley groups, the two static pulley groups are adjacently arranged and located between the two lifting ears, and the two ends of the lifting rope pass through the two static pulley groups respectively and are fixed on the two lifting ears.
[0009] The sliding hoisting groups are arranged in two groups on the main frame, which are respectively located at the front and rear sides of the main frame, and the two lifting ears in each group of the sliding hoisting groups are respectively fixed to the left and right ends of the same side of the main frame.
[0010] The pulley block also includes a movable pulley block, the hook is fixed on the movable pulley block, the lifting rope passes through the sliding groove below the movable pulley block and then passes through the static pulley block, and the movable pulley block has the freedom to slide relative to the lifting rope on the lifting rope.
[0011] Three or more groups of lifting ears are evenly arranged above the main frame, and the lifting ears are respectively connected with lifting chains. The main frame is connected to an external crane through the lifting chains.
[0012] The beneficial effects of the utility model are as follows: the utility model provides a composite plate hanger, and by using a static pulley group, when the composite plate swings during the hoisting process, the hook can make a preliminary position adjustment with the swing of the composite plate through the rotation of the lifting rope and the pulley group, thereby dispersing the local force of the composite plate and realizing the preliminary self-balancing adjustment during the hoisting process;
[0013] On this basis, by fixing the hook on the movable pulley block, the hook has the freedom to move relative to the rope through the movable pulley block, and the hook can slide relative to the rope when the suspended composite plate swings, thereby changing the force of the composite plate on the hanger to balance the local force caused by the shaking. On the basis of the static pulley block, the self-balancing ability of the composite plate in the lifting process can be further improved, thereby significantly reducing the scrap rate of the composite plate in the lifting process, and the lifting speed can also be improved accordingly, thereby improving the lifting efficiency of the composite plate and reducing the lifting cost. The technical solution provided by the utility model can effectively improve the lifting efficiency of the composite plate and reduce the scrap rate of the composite plate by using a simple structure. It has low cost and good effect, and is suitable for promotion and application in the field of composite plate lifting. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the main structure of the utility model;
[0015] Figure 2 It is a schematic diagram of the main structure of the main frame of the utility model and the sliding hoisting group below it;
[0016] Figure 3 for Figure 2 main view.
[0017] Marking description in the figure: 1. Main frame body; 2. Sliding hoisting group; 3. Lifting lug; 4. Fixed pulley block; 5. Hoisting rope; 6. Hook; 7. Movable pulley block; 8. Hoisting ear; 9. Hoisting chain. Detailed implementation mode
[0018] In order to better understand the purpose, structure and function of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.
[0019] As Figures 1 to 3 shown, the present utility model provides a laminated slab hanger, which includes a main frame body 1 and a sliding hoisting group 2 arranged on the main frame body 1. The sliding hoisting group 2 is used to hoist the laminated slab, so that the laminated slab can automatically balance its force through the sliding hoisting group 2 during the hoisting process, ensuring uniform force during the hoisting process, thereby reducing the cracking rate and scrapping rate of the laminated slab during the hoisting process. Specifically, the number of the sliding hoisting groups 2 is two or more. In this embodiment, preferably two groups, and the two sliding hoisting groups 2 are respectively located on the front and rear sides of the main frame body 1. Two lifting lugs 3 in each sliding hoisting group 2 are respectively fixed at the left and right ends on the same side of the main frame body 1.
[0020] In addition, each sliding hoisting group 2 includes a lifting lug 3, a pulley block, a hoisting rope 5 and a hook 6. In order to achieve the preliminary self-balancing of the laminated slab, the pulley block in this embodiment includes a fixed pulley block 4. Among them, the number of the lifting lugs 3 is two and they are fixed at both ends of the main frame body 1. The fixed pulley block 4 is fixed between the two lifting lugs 3 through a fixed pulley seat and has the freedom to rotate relative to its own axis; one end of the hoisting rope 5 is fixed on one of the lifting lugs 3, and the other end passes through the upper chute of the fixed pulley block 4 and is fixed on the other lifting lug 3. In order to achieve the self-balancing function of the hanger, the length of the hoisting rope 5 is greater than the distance between the two lifting lugs 3 and has the freedom to slide relative to the fixed pulley block 4. The number of the hooks 6 is two and they are respectively arranged on the hoisting ropes 5 between the fixed pulley block 4 and the two lifting lugs 3 and hang down for hanging the laminated slab.
[0021] Further, in each sliding hoisting group 2, the number of the fixed pulley blocks 4 can be one or more. In this embodiment, preferably two. As Figure 2 、 Figure 3 shown, the two fixed pulley blocks 4 are arranged adjacent to each other and evenly distributed between the two lifting lugs 3. Both ends of the hoisting rope 5 pass through the upper chutes of the two fixed pulley blocks 4 and are fixed on the two lifting lugs 3. When the laminated slab shakes during the hoisting process, the hoisting rope 5 slides relative to the fixed pulley block 4 under the action of the shaking force of the laminated slab, thereby driving the hook 6 to adjust its position to balance the local force of the laminated slab and achieve self-balancing.
[0022] Further, in order to further improve the self-balancing effect of the hanger on the laminated slab, the pulley block in this embodiment further includes a movable pulley block 7. The hook 6 is fixed on the movable pulley block 7. The lifting rope 5 passes through the chute below the movable pulley block 7 and then passes through the fixed pulley block 4. The movable pulley block 7 has a degree of freedom to slide relative to the lifting rope 5 on the lifting rope 5, so that the hook 6 has a degree of freedom to slide relative to the lifting rope 5. During the hoisting process, when the fixed pulley block 4 cannot completely balance the local force generated by the laminated slab due to shaking, the local force of the laminated slab will drive the hook 6 and the connected movable pulley block 7 to slide relative to the lifting rope 5, thereby offsetting the shaking potential energy of the laminated slab and making its overall force balanced. Thus, the self-balancing effect of the laminated slab on the laminated slab hanger is further improved, and the probability of cracking and scrapping of the laminated slab during hoisting is reduced, and the hoisting cost is reduced. On this basis, the hoisting speed and the rotation speed of the hoisting rotation of the hoisting board can be reasonably increased, thereby improving the hoisting efficiency.
[0023] Further, as Figure 1 shown, in order to facilitate the external crane to lift the main frame body 1, three or more sets of lifting ears 8 are evenly arranged above the main frame body 1, preferably four sets. The lifting ears 8 are respectively connected with lifting chains 9, and the main frame body 1 is connected with the external crane through the lifting chains 9.
[0024] It can be understood that the present invention is described through some embodiments. Those skilled in the art know that without departing from the spirit and scope of the present invention, various changes or equivalent replacements can be made to these features and embodiments. In addition, under the teaching of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.
Claims
1. A composite slab hanger, characterized in that: It includes a main frame body (1) and a sliding hoisting group (2) arranged on the main frame body (1). The number of the sliding hoisting groups (2) is two or more. The sliding hoisting group (2) includes a lifting lug (3), a pulley block, a hoisting rope (5) and a hook (6). The pulley block includes a fixed pulley block (4). The number of the lifting lugs (3) is two, which are fixed at both ends of the main frame body (1). The fixed pulley block (4) is fixed between the two lifting lugs (3) through a fixed pulley seat and has the freedom to rotate relative to its own axis. One end of the hoisting rope (5) is fixed on one of the lifting lugs (3), and the other end passes through the upper chute of the fixed pulley block (4) and is then fixed on the other lifting lug (3). The number of the hooks (6) is two, which are respectively arranged on the hoisting rope (5) between the fixed pulley block (4) and the two lifting lugs (3). The length of the hoisting rope (5) is greater than the distance between the two lifting lugs (3) and has the freedom to slide relative to the fixed pulley block (4).
2. The laminated slab hanger according to claim 1, characterized in that: One set of the sliding hoisting group (2) includes two fixed pulley blocks (4). The two fixed pulley blocks (4) are arranged adjacent to each other and are located between the two lifting lugs (3). The two ends of the hoisting rope (5) respectively pass through the two fixed pulley blocks (4) and are then fixed on the two lifting lugs (3).
3. The laminated slab hanger according to claim 1, characterized in that: The number of the sliding hoisting groups (2) arranged on the main frame body (1) is two, which are respectively located on the front and rear sides of the main frame body (1). The two lifting lugs (3) in each set of the sliding hoisting groups (2) are respectively fixed at the left and right ends on the same side of the main frame body (1).
4. A superposed slab hanger according to claim 1, characterized in that: The pulley block further includes a movable pulley block (7). The hook (6) is fixed on the movable pulley block (7). The hoisting rope (5) passes through the chute below the movable pulley block (7) and then passes through the fixed pulley block (4). The movable pulley block (7) has the freedom to slide relative to the hoisting rope (5) on the hoisting rope (5).
5. The laminated slab hanger according to claim 1, wherein: Three or more hoisting lugs (8) are uniformly arranged above the main frame body (1). Hoisting chains (9) are respectively connected to the hoisting lugs (8). The main frame body (1) is connected to an external crane through the hoisting chains (9).