Lifting Beam With Circular Raceways For Heavy Part Positioning
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Solution Overview
Problem
Existing lifting devices struggle to achieve precise positioning of heavy parts with millimeter accuracy in translation and degree-level rotation, especially along horizontal axes, due to coupled adjustments and high force requirements, which increase installation time and complexity.
Innovation Solution
A lifter device comprising multiple beams with circular raceways and securing mechanisms that allow precise positioning around two perpendicular horizontal axes, along with fine vertical adjustment capabilities, enabling the center of gravity to be accurately aligned at the intersection of these axes, facilitating easy and precise placement of heavy parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the center of gravity of the part is shifted relative to the hook to achieve rotation around a horizontal axis, then rotation positioning is enabled, but coupled adjustments occur that generate horizontal and vertical movements requiring multiple iterations
Solution Approach 1:
The device segments the adjustment functions into independent components: a first adjustment mechanism for rotation around the first horizontal axis and a second adjustment mechanism for rotation around the second horizontal axis. This segmentation eliminates coupled adjustments by allowing each axis to be adjusted independently without affecting the other, resolving the technical contradiction between enabling rotation positioning and avoiding multiple adjustment iterations.
Solution Approach 2:
The invention introduces a second horizontal axis perpendicular to the first axis, adding a dimensional degree of freedom. This allows rotation positioning to occur in multiple independent dimensions, enabling precise orientation of the part without the coupled adjustments that occur when using a single axis with center of gravity shifting.
2Ease of operation
If screw-adjustable rudder rings are used to shift the center of gravity for rotation adjustment, then horizontal axis rotation is achieved, but significant adjustment forces are required increasing installation time
Solution Approach 1:
The invention replaces the screw-adjustable rudder ring mechanical system with a more efficient adjustment mechanism. Instead of using threaded screws that require significant rotational force and time, the new mechanism uses a different mechanical advantage system that reduces the adjustment forces needed and speeds up the rotation positioning process, thereby reducing installation time while maintaining ease of operation.
Solution Approach 2:
The invention changes the mechanical parameters of the adjustment system by introducing a new mechanism with different force multiplication characteristics. Rather than relying on high-force screw threads, the new system uses a configuration that provides adequate mechanical advantage with lower force requirements and faster adjustment speed, resolving the contradiction between ease of operation and installation time.
3Manufacturing precision
If precise assembly with millimeter clearances is required, then positioning precision must be high, but coupled adjustments increase the number of iterations needed to achieve adequate positioning
Solution Approach 1:
The device segments the positioning and orientation adjustments into independent functions along perpendicular horizontal axes. This segmentation allows each axis to be adjusted independently to achieve the required millimeter-level assembly clearances without the coupled horizontal and vertical movements that occur with traditional center of gravity shifting methods, thereby reducing the number of adjustment iterations needed.
Solution Approach 2:
The invention introduces dynamic independence between adjustment axes through the use of perpendicular horizontal axes with independent adjustment mechanisms. This dynamic separation allows precise control of positioning and orientation without coupled movements, enabling rapid achievement of millimeter-level assembly clearances with minimal iterations.
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
Enables precise and efficient positioning of heavy parts with millimeter accuracy and degree-level rotation, reducing installation time and effort, while minimizing coupled adjustments and force requirements, thus meeting industrial precision and speed demands.
Implementation Method 1
a second beam (12), movable support on the first beam (11)... means for rolling said first beam on said raceway
Data Source
AI summary
Lifting beam (1) for positioning a component (2) about a horizontal axis (X11) of said lifting beam, comprising: • - a first beam (11); • - a second beam (12) that forms at least a circular runway about the horizontal axis (X11); • - means via which said first beam can run along said runway; and • - means (3) for securing said component to said first beam so that the centre of gravity (G) of said component is on the horizontal axis (X11).