Load-Adjustable Scaffold With Elastic Lift Mechanism
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Solution Overview
Problem
Conventional vertically moving scaffolds have complex structures that lead to malfunctions and difficulties in supporting heavy loads, and they suffer from reduced work efficiency due to the time required to adjust height frequently.
Innovation Solution
A load-adjustable vertically moving scaffold with a base unit, work support, and a lift supporting unit that includes fixed and slope guide members, an elastic member, and a tilt angle adjusting unit, allowing for automatic height adjustment and customizable lowering distance per unit weight based on object load, enabling efficient and precise height control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional vertically moving scaffold uses a link structure for lifting the mount frame, then the scaffold can adjust its height, but the structure becomes complicated and prone to malfunction
Solution Approach 1:
The patent removes the complex link structure from the scaffold system and replaces it with a simple elastic member-based lifting mechanism. The elastic member directly connects the mount frame to the base frame, eliminating the need for multiple link bars and joints while maintaining the height adjustment function.
Solution Approach 2:
The elastic member automatically provides the lifting force when the mount frame is lowered, eliminating the need for separate lifting mechanisms. The system uses the weight of the mount frame and elastic recovery to automatically raise the platform, reducing structural complexity.
2Ease of operation
If a conventional vertically moving scaffold uses a pump or electric motor to control height, then the scaffold can adjust height, but work efficiency is degraded due to long adjustment time
Solution Approach 1:
The elastic member automatically lifts the mount frame without requiring external power sources or control systems. When the worker lowers the platform, the elastic member automatically recoils to raise it, eliminating the need for pumps or motors and achieving instant height adjustment.
Solution Approach 2:
The scaffold operates through periodic lowering and lifting cycles driven by the elastic member's expansion and contraction. This natural oscillation mechanism provides rapid, rhythmic height adjustment without the delays associated with motorized control systems.
3Device complexity
If a conventional vertically moving scaffold has a fixed lifting mechanism, then the structure is simple, but it cannot precisely adjust height for different weights
Solution Approach 1:
The patent introduces adjustable parameters to the elastic member system, allowing the lifting distance to be modified based on the weight of the load. The elastic member's properties can be changed to achieve different lifting heights for different weights, maintaining simplicity while enabling precision adjustment.
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 scaffold maintains worker safety by maintaining a consistent work height during loading and unloading, enhances work efficiency by adjusting height automatically, and supports various objects with customizable lowering distances, reducing the risk of worker injury and improving productivity.
Implementation Method 1
an elastic member having one end fixed to one side of the work support adjacent to the fixed guide members and the other end connected with the lift supporting shaft to apply an elastic bias to the lift supporting shaft toward the fixed guide members
Data Source
AI summary
A load-adjustable vertically moving scaffold comprises a base unit, a work support provided on an upper part of the base unit and a lift supporting unit supporting the work support to vertically move with respect to the base unit, and the lift supporting unit comprises fixed guide members extended upward from both sides of the base unit, slope guide members installed at front sides of the fixed guide members and configured to be tilted with respect to the fixed guide members, a lift supporting shaft configured to vertically move along the slope guide members, and an elastic member having one end fixed to one side of the work support adjacent to the fixed guide members and other end connected with the lift supporting shaft to apply an elastic bias to the lift supporting shaft toward the fixed guide members.