Self-balancing adjustable telescopic hoisting device for laminated slab
By designing a self-balanced adjustable telescopic lifting device, the combination of upper and lower fixed pulleys and the connecting rope pulley joints form a moving pulley set, the angle control and force uniformity problems during the lifting of the laminated plate are solved, and a safe and efficient lifting process is achieved, and it is adapted to components of different sizes.
Patent Information
- Application Number
- CN202421928174.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-09
AI Technical Summary
In prefabricated construction projects, the super-large-sized components of the stacked plate are difficult to control the angle during the lifting process, and are prone to uneven stress, causing the plate to crack or damage. The size of the traditional lifting device is limited and its use efficiency is low.
A self-balanced adjustable telescopic lifting device is designed, using a combination of two layers of fixed pulleys, forming a moving pulley set by connecting ropes and pulling points to ensure vertical stress during lifting, and adjusting the lifting size through an adjustable telescopic device.
It effectively solves the problems of lifting angle control and stress uniformity of the stacked plate, improves the lifting safety factor, avoids plate cracking and damage, and makes the lifting size more flexible and adapts to components of different sizes.
Smart Images
Figure CN222935009U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of construction, in particular to a hoisting device for super-large-sized components of assembled composite slabs. Background Technique
[0002] In the structural construction of prefabricated building projects, using the composite slab construction technology to carry out related activities is an inevitable trend in the future development of the current construction industry, and more and more projects are applying the composite slab construction technology. According to the characteristics of factory prefabrication of composite slabs, multiple hoisting and turnover are required during the process of transporting them to the construction site. Moreover, after design and secondary deepening, the sizes of each slab are different, and there are inevitably some super-large components with relatively large self-weights. It is very difficult to control the angle during the hoisting process, and it is easy to cause uneven stress, resulting in cracking of the composite slab or even damage to the component, and the safety factor is relatively low. The traditional lifting and hoisting device uses a fixed bracket plus a movable pulley block, and pulls the steel wire rope downward. First, it is easy to form a certain angle during hoisting, which is not conducive to the force of the composite slab; second, when each group of movable pulleys has no external pulling force, they work freely and scattered, with low work efficiency; third, the hoisting size is relatively limited. Summary of the Invention
[0003] In view of the problems of unstable force and scattering existing in the existing hoisting tools using a single movable pulley, a self-balanced adjustable telescopic hoisting device is provided.
[0004] The technical solution of the utility model is as follows:
[0005] A self-balanced adjustable telescopic hoisting device for composite slabs, comprising an upper frame 1 and a lower frame 2. Two rows of upper fixed pulleys 12 are installed on the lower surface of the upper frame 1, and two rows of lower fixed pulleys 22 are installed on the upper surface of the lower frame 2. There is a connecting rope pulling point 20 at each end of each row of lower fixed pulleys 22. Both ends of the connecting rope are fixed at the connecting rope pulling point 20, and the middle section of the connecting rope alternately passes through the upper fixed pulley 12 and the lower fixed pulley 22.
[0006] The lower frame 2 is a rectangular frame structure composed of two longitudinal beams and several cross beams. The longitudinal beam is composed of a longitudinal beam sleeve 23 in the middle and I-beams inserted at both ends. The cross beam is composed of a cross beam sleeve 24 in the middle and I-beams inserted at both ends. Both the longitudinal beam sleeve 23 and the cross beam sleeve 24 have bolt holes on the side for fixing the insertion depth of the I-beams at both ends.
[0007] The upper surface of the upper frame 1 is provided with an upper lifting point 11, and a pulling rope is installed at the upper lifting point 11.
[0008] The lower surface of the lower frame 2 is provided with a lower lifting point 21, and the lower lifting point 21 is connected to a hook through a pulling rope.
[0009] Both the upper lifting point 11 and the lower lifting point 21 are installed with pulling ropes through shackles.
[0010] The beneficial effects of the utility model:
[0011] The utility model effectively solves the problem of the force applied at an angle during the hoisting of the laminated slab, and always hoists vertically. Second, each device is a fixed pulley, and a movable pulley group is formed between the upper and lower layers of fixed pulleys, and it is not easy to knot during use. Third, the hoisting size is relatively flexible and adjustable. Description of the Drawings
[0012] Figure 1 It is a three-dimensional structure diagram of the hoisting device.
[0013] Figure 2 It is Figure 1 The view after deflecting a certain angle.
[0014] In the drawings: 1 - upper frame; 11 - upper lifting point; 12 - upper fixed pulley; 2 - lower frame; 20 - connecting rope pulling point; 21 - lower lifting point; 22 - lower fixed pulley; 23 - vertical beam sleeve; 24 - cross beam sleeve. Specific Embodiments
[0015] In order to make the above objects, features and advantages of the utility model more obvious and understandable, the utility model will be further introduced below in conjunction with the drawings and specific embodiments:
[0016] Embodiment: This hoisting device is composed of an upper frame 1 and a lower frame 2. The upper frame 1 is a rectangular frame composed of four steel beams, with a strengthening member in the middle of the rectangular frame. There are two rows of upper lifting points 11 on the upper surface of the steel beams in the length direction of the rectangular frame, and a pulling rope is installed at the upper lifting point 11 through a shackle. Two rows of upper fixed pulleys 12 are installed on the lower surface of the upper frame 1, and two rows of lower fixed pulleys 22 are installed on the upper surface of the lower frame 2. There is a connecting rope pulling point 20 at each end of each row of lower fixed pulleys 22. The two ends of the connecting rope are fixed at the connecting rope pulling point 20, and the middle section of the connecting rope alternately passes through the upper fixed pulley 12 and the lower fixed pulley 22.
[0017] The lower frame 2 is a rectangular frame structure composed of two longitudinal beams and several cross beams. The longitudinal beam is composed of a longitudinal beam sleeve 23 in the middle and I-beams inserted at both ends. The cross beam is composed of a cross beam sleeve 24 in the middle and I-beams inserted at both ends. There are bolt holes on the sides of the longitudinal beam sleeve 23 and the cross beam sleeve 24 for fixing the insertion depth of the I-beams at both ends. The lower surface of the lower frame 2 is equipped with a lower lifting point 21, and the lower lifting point 21 is connected to a hook through a pulling rope.
[0018] In this embodiment, the fixing structures of the upper lifting point 11, the upper fixed pulley 12, the lower fixed pulley 22 and the lower lifting point 21 are all composed of two ear plates and a transverse shaft in the middle, and the upper fixed pulley 12 and the lower fixed pulley 22 are installed on the transverse shaft.
[0019] Compared with the prior art, the utility model effectively solves the problem of the force acting at a certain angle during the hoisting of the laminated slab, ensures that the lower connecting rope is in a vertical state, ensures uniform force, and prevents the laminated beam slab from swinging easily during the hoisting process. Moreover, it ensures uniform force and prevents the laminated beam slab from cracking and damage during the hoisting process. Second, each device is a fixed pulley. By using a connecting rope in cooperation with the fixed pulley, the two-by-two combination achieves the effect of a movable pulley block, and it is not easy to knot during use. Third, the lifting platform can be horizontally and longitudinally adjusted through an adjustable telescopic device, and the hoisting size is relatively flexible, with a wide adjustable size coverage range.
Claims
1. A self-balancing adjustable telescopic lifting device for a composite plate, comprising an upper frame (1) and a lower frame (2), characterized in that: Two rows of upper fixed pulleys (12) are mounted on the lower surface of the upper frame (1), and two rows of lower fixed pulleys (22) are mounted on the upper surface of the lower frame (2). Each row of lower fixed pulleys (22) has a connecting rope knot point (20) at both ends, and both ends of the connecting rope are fixed at the connecting rope knot point (20). The middle section of the connecting rope alternately passes through the upper fixed pulley (12) and the lower fixed pulley (22).
2. The self-balancing adjustable telescopic hoisting device for composite plates according to claim 1 is characterized in that: The lower frame (2) is a rectangular frame structure composed of two longitudinal beams and a plurality of transverse beams. The longitudinal beam is composed of a longitudinal beam sleeve (23) in the middle and I-beams inserted at both ends. The transverse beam is composed of a transverse beam sleeve (24) in the middle and I-beams inserted at both ends. Bolt holes are provided on the sides of the longitudinal beam sleeve (23) and the transverse beam sleeve (24) for fixing the insertion depth of the I-beams at both ends.
3. The self-balancing adjustable telescopic hoisting device for composite plates according to claim 2 is characterized in that: A hanging point (11) is arranged on the upper surface of the upper frame (1), and a pull rope is installed at the hanging point (11).
4. The self-balancing adjustable telescopic hoisting device for a composite plate according to claim 3 is characterized in that: A lower hanging point (21) is arranged on the lower surface of the lower frame (2), and the lower hanging point (21) is connected to a hanging hook via a drawstring.
5. The self-balancing adjustable telescopic hoisting device for composite plates according to claim 4 is characterized in that: The upper hanging point (11) and the lower hanging point (21) are both provided with drawstrings via shackles.