Stepladder Crane Boom for HVAC Compressor Lifting
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Solution Overview
Problem
Technicians face challenges in safely and efficiently removing heavy air conditioner compressor units from assemblies, as existing methods require manual lifting, which can lead to back strain and are not portable or easily set up for single-person operation.
Innovation Solution
A portable crane system is created by attaching a boom, jib, and winch assembly to a stepladder, allowing for safe and stable lifting of compressor units using a handlebar and control module, enabling single-person operation and easy setup with existing stepladders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If manual lifting methods are used to remove compressor units, then the system remains simple and portable, but technician back strain and safety risks increase
Solution Approach 1:
The crane system is divided into separate modular components (boom, jib, winch assembly, handlebar) that can be independently manufactured, transported, and assembled onto the stepladder, allowing the system to remain portable while providing mechanical lifting capability
Solution Approach 2:
The crane assembly acts as an intermediary device between the technician and the heavy compressor unit, transferring the lifting force from the technician's manual effort through the winch mechanism to the load, thereby eliminating direct back strain on the technician
2Reliability
If a portable crane system is implemented, then lifting safety and efficiency improve, but device complexity and setup requirements increase
Solution Approach 1:
The crane system is designed to attach to standard stepladders already present in HVAC service vehicles, making the equipment universally applicable without requiring specialized or custom ladders, thereby reducing setup complexity while maintaining safety
Solution Approach 2:
The boom and jib components are designed with adjustable and movable features that allow the system to adapt to different lifting scenarios and compressor positions, improving safety and versatility while maintaining relatively simple setup procedures
3Productivity
If heavy compressor units are maneuvered manually, then equipment cost remains low, but technician injury risk and productivity loss increase
Solution Approach 1:
The manual mechanical lifting action is replaced with a winch-driven mechanical system that uses cable tension to lift the compressor, substituting the technician's direct physical effort with a mechanical advantage system that reduces both injury risk and time required for the operation
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 system minimizes back strain on technicians by providing a safe and efficient means to lift and remove compressor units, being portable, lightweight, and easy to set up, effectively addressing the need for a portable and efficient lifting solution.
Implementation Method 1
A winch is attached to the distal end of the boom, near the attachment of the jib to the boom. A cable extends downward from the winch to connect to the compressor unit
Implementation Method 2
The boom and jib assembly extend from the rungs of the stepladder horizontally away from the rungs
Data Source
AI summary
An air conditioning crane boom assembly having a number of mounting feet that removably secure the assembly to the rungs of a stepladder. Braces extend from these feet to a boom that extends horizontally away from the rungs of the stepladder. A pulley or a winch may be attached to the base of the boom, near the rungs of the stepladder, and the boom extends away from the stepladder to facilitate safe and stable lifting of loads such as air-conditioner components.