Adjustable Pulley Lifting Apparatus with Telescopic Beam
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Solution Overview
Problem
Existing pulley lifting devices face challenges in coupling and balancing during lifting, particularly when adapting to different pulley sizes and installation situations, due to the shape of the pulley and access constraints.
Innovation Solution
A lifting apparatus with a first beam section that couples to the pulley and a second beam section with moveable lift couplings and notches, allowing for adjustable length and locking mechanisms to ensure secure coupling and balanced lifting, featuring a cam system for interference fit and telescopic adjustments for precise fitting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed beam structure is used for pulley lifting, then the structural simplicity is improved, but the adaptability to different pulley sizes and lengths deteriorates
Solution Approach 1:
The beam structure is designed with telescopic sections that can extend and retract to accommodate different pulley lengths. The movable couplings can slide along the beam and lock at different positions, transforming a static fixed beam into a dynamic adjustable structure that adapts to various pulley sizes while maintaining structural integrity
Solution Approach 2:
The beam is divided into multiple telescopic sections that can independently adjust their length. This segmentation allows the beam to be extended or retracted to match different pulley lengths, providing adaptability without requiring complete redesign of the entire structure
2Adaptability or versatility
If movable couplings are used for load balancing, then the adaptability to different installation situations is improved, but the device complexity deteriorates
Solution Approach 1:
The movable couplings are equipped with self-locking mechanisms that automatically engage with notches on the beam when positioned correctly. This self-service feature allows operators to adjust the coupling positions for load balancing without requiring complex locking procedures or additional tools, reducing operational complexity while maintaining adaptability
Solution Approach 2:
The couplings are designed to be movable along the beam during positioning, then lock into fixed positions once aligned with notches. This dynamic behavior provides the flexibility needed for different installation situations while the locked position maintains structural stability, effectively managing the complexity-adaptability trade-off
3Adaptability or versatility
If the beam length is made adjustable, then the versatility for different pulley lengths is improved, but the structural stability deteriorates
Solution Approach 1:
The telescopic beam sections remain locked in their adjusted positions during the lifting operation, providing structural stability. The adjustability is only active during the setup phase, allowing the beam to be configured for different pulley lengths, then locked to maintain stability throughout the lifting process
Solution Approach 2:
The beam includes locking mechanisms that are engaged before lifting begins, securing the telescopic sections in their adjusted positions. This beforehand cushioning ensures that once the beam is configured for a specific pulley length, it maintains structural stability throughout the lifting operation, preventing any unintended movement or collapse
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 apparatus enables secure and balanced lifting of pulleys of varying sizes by providing a lockable and adjustable coupling system, ensuring effective load balancing and easy repositioning without requiring removal of lift couplings, enhancing the efficiency of pulley removal and maintenance processes.
Implementation Method 1
the cam is shaped to create an interference fit between the track and respective one of the plurality of notches in the second condition
Data Source
AI summary
A lifting apparatus (10) for a pulley (12), the apparatus (10) including: a first beam section (14) adapted to couple to the pulley (12) in a fitted condition; and a second beam section (16) connected to the first beam section (14) in a spaced apart relationship extending parallel to the first beam section (14). The second beam section (16) includes a lifting arrangement (20) including a pair of lift couplings (22) and a plurality of notches (24), the pair of lift couplings (22) being moveable between a first condition in which each one of the pair of lift couplings (22) are able to be moved between the plurality of notches (24), and a second condition in which each one of the pair of lift couplings (22) is substantially retained in a respective one of the plurality of notches (24). A related method of use is also disclosed.