Demolition Machine Boom Assembly for Stable Crane Lifting
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Solution Overview
Problem
Demolition machines used in harsh environments, such as around furnaces, face challenges with balance and maneuverability, especially when lifted by cranes, leading to potential tipping and reduced control during operation.
Innovation Solution
The demolition machine design includes a balanced deck configuration with a central axis, narrow tracks, sealed enclosures for components, and a kidney loop hydraulic cooling system, along with a boom assembly that maintains a center of gravity for stable lifting and maneuverability, using a boom support structure positioned on the central axis to prevent tipping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the demolition machine is designed with a wide track width for stability, then the machine becomes more stable during operation, but the machine becomes harder to maneuver and lift
Solution Approach 1:
The patent applies parameter changes by optimizing the track width to a specific range (12-20 inches) that balances stability and maneuverability. This quantitative parameter optimization resolves the contradiction by finding the optimal value that satisfies both stability requirements and ease of lifting/maneuvering.
2Ease of operation
If the boom assembly is positioned away from the central axis to improve maneuverability, then the machine becomes easier to maneuver, but the machine becomes unbalanced and prone to tipping during lifting
Solution Approach 1:
The patent employs asymmetry in the boom assembly configuration, positioning the boom support structure at an offset from the central axis. This asymmetric design allows the boom to be positioned optimally for maneuverability while counterweights are strategically placed to maintain overall balance, resolving the contradiction between maneuverability and stability.
3Ease of repair
If components are exposed to the environment for ease of access and maintenance, then maintenance becomes easier, but the components are damaged by harsh conditions including high temperatures
Solution Approach 1:
The patent utilizes enclosed housings and protective shields that act as flexible barriers between the hydraulic components and the harsh environment. These protective structures allow components to be accessed for maintenance while shielding them from extreme temperatures and environmental damage, resolving the contradiction between accessibility and protection.
4Stability of the object's composition
If the track width is increased for better stability, then the machine becomes more stable, but the machine becomes more vulnerable to damage from debris and rough terrain
Solution Approach 1:
The patent segments the track system into modular components with protective guardrails and reinforced structures. This segmentation allows the track to maintain adequate width for stability while incorporating protective elements that resist damage from debris and rough terrain, resolving the contradiction between stability and damage resistance.
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 design enhances safety and control during lifting and movement by maintaining balance and protecting components from harsh conditions, ensuring stable and controlled operation in challenging environments.
Implementation Method 1
The hydraulic system may include a kidney loop hydraulic cooling system
Implementation Method 2
The engagement between the bearing gear and the worm gear may include at least six points of contact, with the worm gear driven by a hydraulic motor
Data Source
AI summary
A boom assembly for a demolition machine includes a main support having a support cylinder configured to raise and lower the main support, an outer boom arm attached to the main support, an inner boom arm received within the outer boom arm, the inner boom arm axially moveable relative to the outer boom arm via an inner boom cylinder, and a hydraulically actuated tool implement. Hydraulic lines for the hydraulically actuated tool implement are received within the inner boom arm.