Disclosed is a disc buckle scaffold steel pipe hoist
By designing a disc-lock scaffolding steel pipe lifting device with a fall prevention safety device, the safety hazards and operational complexity in the lifting process of disc-lock scaffolding have been solved, achieving efficient and safe lifting results and reducing the risk of falling from heights and labor costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE THIRD CONSTR OF CHINA CONSTR EIGHTH ENG BUREAU
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-02
AI Technical Summary
There are safety hazards in the hoisting process of existing disc-lock scaffolding. Traditional hoisting equipment lacks active anti-fall design, which leads to the risk of falling from height. In addition, the complicated binding process increases labor costs and reduces construction efficiency.
A disc-lock scaffolding steel pipe lifting device was designed, which includes a lifting body and a fall protection safety device. The combination of the first and second wire ropes and the pin forms a four-point lifting system to ensure the stability of the steel pipe during the lifting process. The double safety design of the pin and the lifting ring prevents accidental detachment.
This standardized the hoisting process, reduced the risk of falls from heights, simplified operating procedures, improved the safety and efficiency of the construction site, and reduced labor costs.
Smart Images
Figure CN224313077U_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of building construction technology, specifically to a disc-lock scaffolding steel pipe lifting device. Background Technology
[0002] In the construction industry, modular scaffolding is widely used due to its advantages such as efficient assembly and disassembly and stable load-bearing capacity. However, significant safety hazards and operational bottlenecks exist in the handling and hoisting of modular steel pipes. Currently, the industry generally adopts the method of hoisting pre-assembled modular scaffolding by rental companies, but existing hoisting equipment lacks active fall protection design and relies solely on the basic connection between the hook and the lifting lug. During hoisting, if equipment sway, operational errors occur, or strong winds occur, the modular steel pipes are extremely prone to falling from heights, causing falling object accidents.
[0003] To mitigate risks, construction sites typically require the manual binding and reinforcement of the disc-lock scaffolding using additional steel wire ropes. However, this method has several drawbacks. For instance, it is difficult to implement comprehensive binding in confined work areas such as unloading, rendering the protective measures ineffective. The binding / unbinding process must be repeated for each lifting operation, significantly extending the lifting cycle and increasing labor costs. Furthermore, workers are prone to simplifying procedures due to the cumbersome operation, greatly increasing the difficulty of on-site safety supervision.
[0004] The aforementioned problems not only result in persistently high safety hazards but also hinder the improvement of construction efficiency. Therefore, there is an urgent need to develop a specialized lifting tool that integrates fall protection functions, is easy to operate, and can adapt to complex working conditions, so as to fundamentally solve the problem of safe lifting of disc-lock scaffolding. Summary of the Invention
[0005] Purpose of the invention: The purpose of this invention is to address the shortcomings of existing technologies by providing a disc-lock scaffolding steel pipe lifting tool. By adding a fall prevention safety device, the lifting and transportation of disc-lock scaffolding is made more standardized, the difficulty of on-site safety management is reduced, the safety index of the construction site is greatly improved, the occurrence of hidden accidents is reduced, and the lifting efficiency is also improved, while reducing labor costs.
[0006] Technical solution: The present invention provides a disc-lock scaffolding steel pipe lifting device, which includes a lifting device body and lifting lugs provided on the lifting device body, and also includes a fall prevention safety device; the lifting device body includes a first column and a second column, the bottoms of the first column and the second column are fixedly connected by a crossbar to form a U-shaped frame with the opening facing upward; a first positioning hole a is provided on the side wall of the second column facing the first column, and a second positioning hole b is provided below the first positioning hole a;
[0007] The fall protection device includes a first wire rope and a second wire rope. One end of the first wire rope is fixed to the first column, and the other end of the first wire rope is provided with a lifting ring A. One end of the second wire rope is fixed to the top of the second column through the first positioning hole a, and the other end of the second wire rope is provided with a pin.
[0008] During operation, the lifting ring A passes through the second positioning hole b and is locked and fixed by the pin. The length of the first wire rope is such that when the disc buckle steel pipe is stacked on the main body of the lifting device, the first wire rope is taut and the pin (303) can be vertically inserted into the lifting ring A.
[0009] Furthermore, both the first and second columns are equipped with lifting lugs on their outer sidewalls, designated as the first lifting lug and the second lifting lug, respectively. During operation, after the two disc-lock steel pipe lifting devices are stacked, the hook simultaneously engages the first and second lifting lugs, forming a four-point lifting system. This prevents the steel pipe from slipping due to unilateral tilting, and the symmetrical design is compatible with the crane hook layout.
[0010] Furthermore, the connection point between the second wire rope and the pin is located at the end of the pin. The length of the second wire rope is shorter than that of the first wire rope, so the pin can always be suspended at the operating height, avoiding the risk of falling from a height.
[0011] Furthermore, the lifting ring A is a closed metal ring, and the inner diameter of the lifting ring A is larger than the diameter of the pin and smaller than 1 / 2 of the length of the pin. This design can achieve the purpose of double security, which is to allow the pin to be easily inserted, and to ensure that the inner wall of the lifting ring A will lock the end of the pin in case of accidental loosening.
[0012] Furthermore, the first column, the second column, and the crossbar are formed as a single piece.
[0013] Beneficial effects: Compared with the prior art, the advantages of the present invention are as follows:
[0014] (1) After stacking the steel pipes, pass the lifting ring A through the second positioning hole b, insert the pin vertically into the lifting ring A to lock it, and the taut first wire rope provides pre-tension force so that the pin bears shear force. When the steel pipe shakes, the pin locks the lifting ring A to prevent it from coming out. The single-action pin locking replaces the traditional complex binding. At the same time, the taut state ensures that the pin is only subjected to shear force, avoiding bending failure.
[0015] (2) When using this invention, the two lifting devices are placed at both ends of the steel pipe bundle and the anti-fall device is locked simultaneously. This not only eliminates the risk of bending in the middle of the steel pipe bundle, but also provides protection for the other end when one end is accidentally unlocked. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of the present invention. Detailed Implementation
[0017] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the embodiments described.
[0018] like Figure 1The illustrated disc-lock scaffolding steel pipe lifting device includes a lifting device body 1 and lifting lugs 2 disposed on the lifting device body, and also includes a fall protection safety device. The lifting device body 1 includes a first column 101 and a second column 102. The bottoms of the first column 101 and the second column 102 are fixedly connected by a crossbar 103 to form an upward-opening U-shaped frame. The first column 101, the second column 102, and the crossbar 103 are integrally formed. Lifting lugs, namely the first lifting lug 201 and the second lifting lug 202, are provided on the outer sidewalls of the top of the first column 101 and the first lifting lug 202, respectively. A first positioning hole a is provided on the top sidewall of the second column 102 facing the first column 101, and a second positioning hole b is provided below the first positioning hole a.
[0019] The fall arrestor includes a first wire rope 301 and a second wire rope 302. One end of the first wire rope 301 is fixed to the first column 101, and the other end of the first wire rope 301 is provided with a lifting ring A, which is a closed metal ring. The inner diameter of the lifting ring A is larger than the diameter of the pin 303 but smaller than half the length of the pin 303. One end of the second wire rope 302 is fixed to the top of the second column 102 through a first positioning hole a, and the other end of the second wire rope 302 is provided with a pin 303. The connection point between the second wire rope 302 and the pin 303 is located at the end of the pin 303, and the length of the second wire rope 302 is shorter than that of the first wire rope 301.
[0020] The hoisting and dismantling process in this embodiment is as follows:
[0021] I. Lifting Preparation Stage
[0022] Place the two lifting bodies 1 symmetrically at both ends of the disc-buckle steel pipe bundle (6m in length), ensuring that the opening of the U-shaped frame faces upwards, and the crossbar 103 is placed close to the ground. The first column 101 and the second column 102 are arranged on both sides of the steel pipe bundle. Use a forklift to vertically stack the disc-buckle steel pipes inside the U-shaped frame, with the stacking height not exceeding the top of the column.
[0023] II. Installation (taking a single lifting device as an example)
[0024] Step 1: Pull up the first steel wire rope 301 and pass the lifting ring A through the second positioning hole b from bottom to top;
[0025] Step 2: Tighten the lifting ring A to make the first wire rope 301 taut (judgment standard: the wire rope has no drooping arc);
[0026] Step 3: Take pin 303 and insert it vertically into the inner hole of the lifting ring A until it is through.
[0027] III. Lifting Operation
[0028] The crane lifts the steel pipe bundle at a constant speed and observes its condition: Normal working condition: The center of gravity of the steel pipe bundle is stable and the anti-fall device has no displacement. Strong wind / swaying working condition: If the steel pipe bundle deviates, the pin 303 is subjected to shear force and presses against the edge of the second positioning hole b, preventing the lifting ring A from coming out; After unloading to the target area, the crane remains suspended.
[0029] IV. Disassembly Process
[0030] Step 1: Use a special wrench to tap the end of the pin 303 to remove it from the lifting ring A;
[0031] Step 2: Pull down the lifting ring A to disengage it from the second positioning hole b;
[0032] Step 3: Release the hook of the crane and remove the lifting device.
[0033] As described above, although the invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims
1. A disc-lock scaffolding steel pipe lifting device, comprising a lifting device body (1) and lifting lugs (2) disposed on the lifting device body, characterized in that: It also includes a fall protection safety device; the main body (1) of the lifting device includes a first column (101) and a second column (102), the bottom of the first column (101) and the second column (102) are fixedly connected by a crossbar (103) to form a U-shaped frame with the opening facing upward; a first positioning hole (a) is provided on the side wall of the second column (102) facing the first column (101), and a second positioning hole (b) is provided below the first positioning hole (a); The fall protection device includes a first wire rope (301) and a second wire rope (302). One end of the first wire rope (301) is fixed to the first column (101), and the other end of the first wire rope (301) is provided with a lifting ring (A). One end of the second wire rope (302) is fixed to the top of the second column (102) through the first positioning hole (a), and the other end of the second wire rope (302) is provided with a pin (303). During operation, the lifting ring (A) passes through the second positioning hole (b) and is locked and fixed by the pin (303). The length of the first wire rope (301) is such that when the disc buckle steel pipe is stacked on the lifting device body (1), the first wire rope (301) is taut and the pin (303) can be vertically inserted into the lifting ring (A).
2. The disc-lock scaffolding steel pipe lifting device according to claim 1, characterized in that: The first column (101) and the second column (102) are provided with lifting lugs on their outer sidewalls, namely the first lifting lug (201) and the second lifting lug (202).
3. The disc-lock scaffolding steel pipe lifting device according to claim 1, characterized in that: The connection point between the second wire rope (302) and the pin (303) is located at the end of the pin (303), and the length of the second wire rope (302) is less than that of the first wire rope (301).
4. The disc-lock scaffolding steel pipe lifting device according to claim 1, characterized in that: The lifting ring (A) is a closed metal ring, and the inner diameter of the lifting ring (A) is greater than the diameter of the pin (303) and less than 1 / 2 of the length of the pin (303).
5. The disc-lock scaffolding steel pipe lifting device according to claim 1, characterized in that: The first column (101), the second column (102), and the crossbar (103) are integrally formed.