Steel wire self-locking mechanism and lifting device
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Solution Overview
Problem
Traditional lifting tables using gas springs suffer from poor synchronism, adaptability, economic inefficiency, and user experience issues due to complex structures and high costs, with gas springs causing damage and noise when unloaded.
Innovation Solution
A steel wire self-locking mechanism with a threaded sleeve, self-locking gear, and a locking device driven by a dragline, combined with a lifting device using two symmetrical lifting assemblies and a gas spring, where the steel cables and gas spring are arranged to improve synchronism and reduce material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If gas springs are used for lifting and locking, then lifting power and locking function are achieved, but the structure becomes complicated and cost increases
Solution Approach 1:
The lifting table is divided into multiple independent lifting units, each with its own steel wire mechanism. This segmentation allows each unit to be simplified independently while maintaining overall system functionality, reducing the complexity of individual components compared to using gas springs in each leg.
Solution Approach 2:
The steel wire mechanism is designed to automatically lock and hold the lifting position without requiring additional locking components or energy input. The wire's tension itself provides the locking function, eliminating the need for separate locking mechanisms that would increase structural complexity.
2Power
If gas springs are installed in each table leg, then lifting power is provided, but the stretching rates are not exactly the same causing jam and unsmooth lifting
Solution Approach 1:
Multiple steel wires are combined into a single continuous wire that runs through multiple lifting units. This merging ensures that all lifting units move synchronously as a single system, eliminating the synchronization problems that occur when independent gas springs have slightly different stretching rates.
Solution Approach 2:
The continuous steel wire serves multiple functions simultaneously: it provides lifting power to multiple units, ensures synchronous movement across all units, and acts as a unified control element. This multi-functionality replaces the need for multiple independent gas spring systems that would require precise matching of their characteristics.
3Reliability
If traditional lifting tables use double lifting gas springs, then lifting function is achieved, but more materials are needed resulting in poor economic benefits
Solution Approach 1:
The gas spring component is completely extracted and removed from the system. Its lifting and locking functions are replaced by the steel wire mechanism combined with the dragline, significantly reducing the quantity of materials needed while maintaining the essential lifting functionality.
Solution Approach 2:
The steel wire and dragline mechanism uses simpler, less expensive materials compared to gas springs. The wire can be easily replaced if needed, and the overall system uses fewer and simpler components, improving economic benefits while maintaining reliable lifting function.
4Reliability
If gas springs are used for locking height, then height maintenance is achieved, but the volume is large and final stroke is short preventing small lifting table manufacture
Solution Approach 1:
The steel wire acts as a flexible element that can be arranged in a compact configuration within the lifting table structure. Unlike rigid gas springs that occupy significant volume, the wire can be routed through the structure efficiently, enabling compact designs for small lifting tables while maintaining the ability to lock and maintain height.
Solution Approach 2:
The wire mechanism utilizes three-dimensional routing and spatial arrangement to achieve height maintenance functionality. By changing from the linear, volume-consuming gas spring approach to a flexible wire that can be arranged in multiple dimensions within the structure, the system achieves the same function with much reduced volume, enabling small lifting table manufacture.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides improved synchronism, adaptability, and economic benefits by reducing material costs and preventing damage from gas spring inertia, enhancing user experience with reduced starting force and elastic ratio.
Implementation Method 1
A fixing shaft is arranged between the L-shaped plate and the first side plate. The fixing shaft is sleeved with a first locking plate and a torsion spring.
Implementation Method 2
One end of the convex plate that protrudes is connected with the tension spring hole through the tension spring.
Implementation Method 3
A threaded sleeve on which a steel wire is wound is arranged outside the first rotating shaft, rotating around the shaft or synchronously rotating with the first rotating shaft.
Data Source
AI summary
A steel wire self-locking mechanism and a lifting device are provided. The steel wire self-locking mechanism includes a surrounding plate and a self-locking gear and a locking device arranged in the surrounding plate, and uses a friction force of a threaded sleeve to lock the lifting device. The lifting device includes a lifting assembly and a beam assembly. The steel wire self-locking mechanism is arranged in the beam assembly, and the locking of the lifting device is realized by the steel wire self-locking mechanism. The steel wire self-locking mechanism and the lifting device have good adaptability. Due to a smaller volume, the steel wire self-locking mechanism is applicable to lifting tables in various sizes.