Dual-Spring Lift Mechanism for Stable Heavy-Load Vertical Motion
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Solution Overview
Problem
Existing up-and-down driving devices face instability when moving heavy objects due to varying elastic forces from compression springs, which affects the motor's ability to stably transfer objects, especially in space-constrained environments.
Innovation Solution
The combination of a fixed-position compression spring main module and a variable-position compression spring supplemental module, where the variable-position spring adjusts its elastic force in response to the position of the fixed-position spring to stabilize the up-and-down movement of the driving unit, ensuring consistent operation and preventing motor overload.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If compression springs are used to assist motor power and alleviate mechanical vibrations, then the motor size can be reduced, but the elastic force varies depending on spring length causing unstable object movement
Solution Approach 1:
The compression spring system is divided into two separate modules: a fixed-position compression spring main module (100) and a variable-position compression spring supplemental module (200). Each module independently supports the up-and-down driving unit at different positions, allowing the elastic forces to be distributed and controlled separately, thereby maintaining stable total elastic force throughout the movement range.
Solution Approach 2:
The patent changes the positional parameter of the compression springs by introducing a variable-position supplemental module that can adjust its support position. This allows the elastic force distribution to be optimized at different stages of the driving unit's movement, maintaining consistent total elastic force while reducing motor load variations.
2Force
If the size of motor and driving device is increased to move heavy objects, then the moving capability is improved, but the device occupies more space
Solution Approach 1:
The compression spring modules function as counterweight elements that provide upward elastic force to support the weight of heavy objects. The fixed-position main module and variable-position supplemental module work together to distribute the weight support function, enabling heavy object movement without requiring a proportionally larger motor.
3Power
If compression springs are used to assist motor power, then motor overload is prevented, but the varying elastic force causes inconsistent resultant force on the object
Solution Approach 1:
The compression spring system is divided into two separate modules: a fixed-position compression spring main module (100) and a variable-position compression spring supplemental module (200). Each module independently supports the up-and-down driving unit at different positions, allowing the elastic forces to be distributed and controlled separately, thereby maintaining stable total elastic force throughout the movement range.
Solution Approach 2:
The variable-position supplemental module provides feedback-based elastic force adjustment by changing its support position in response to the driving unit's position. This creates a self-regulating system where the elastic force distribution automatically compensates for variations, maintaining consistent resultant force on the transported object.
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
This configuration enables stable and efficient up-and-down movement of objects by automatically adjusting the elastic force, maintaining stability and reducing the load on the drive motor, even in spaces with limited room.
Implementation Method 1
a fixed-position compression spring main module 100 comprising a fixed-position compression spring 130 having one side fixed to a lower end of the housing 120 and the other side supporting the up-and-down driving unit 150
Implementation Method 2
a variable-position compression spring supplemental module 200 comprising a variable-position compression spring 250 having one side mounted rotatably to a side of the housing 120 and the other side fastened rotatably to the up-and-down driving unit 150 and configured to rotate while making a predetermined angle with the motion direction of the up-and-down driving unit 150
Data Source
AI summary
An up-and-down driving device allows an up-and-down driving unit to move while supporting an object's load, in a support module in which the up-and-down driving unit is movably inserted into an inner space of a fixed housing. The up-and-down driving device includes: a driving means for moving the up-and-down driving unit in an up-and-down direction; a fixed-position compression spring main module including a fixed-position compression spring having one side fixed to a lower end of the housing and the other side supporting the up-and-down driving unit and mounted in a motion direction of the up-and-down driving unit; and a variable-position compression spring supplemental module including a variable-position compression spring having one side mounted rotatably to a side of the housing and the other side fastened rotatably to the up-and-down driving unit and configured to rotate while making a predetermined angle with the motion direction of the up-and-down driving unit.