Rod-Lock Air Bag Lifter Prevents Sudden Platform Drop
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Solution Overview
Problem
Existing air bag lifting systems in the commercial trucking industry are limited in range of motion and prone to sudden failure under loss of pressure conditions, which restricts their application and reliability.
Innovation Solution
A pneumatically actuated rod lock system integrated with an air bag assembly, where the rod lock clamps the platform in position under low pressure conditions, ensuring stability even if the pressurized gas source fails, and a stabilizing assembly maintains horizontal alignment and supports against horizontal forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If air bag lifting systems are used for limited range of motion applications, then they can provide lifting power, but they are prone to sudden failure under loss of pressure conditions
Solution Approach 1:
The rod lock mechanism is pre-configured to automatically engage and lock the platform in position when pressure is lost, preventing sudden failure before it can occur. The mechanical locking action is prepared in advance to counteract the harmful effect of pressure loss.
Solution Approach 2:
The rod lock assembly provides a mechanical safety backup that cushions against the harmful effects of pressure loss. By having the locking mechanism ready in advance, the system absorbs the shock of pressure failure and prevents catastrophic platform descent.
2Reliability
If a rod lock assembly is added to prevent sudden failure, then reliability improves, but device complexity increases
Solution Approach 1:
The rod lock assembly is integrated with the existing air bag lifting system, combining the pneumatic lifting function with the mechanical locking function into a unified system. This merging reduces overall complexity compared to having separate independent systems.
Solution Approach 2:
The rod lock assembly serves multiple functions: it locks the platform in position during pressure loss, provides mechanical support, and enables greater range of motion. This multi-functionality justifies the added complexity by delivering multiple benefits from a single assembly.
3Adaptability or versatility
If the system is designed for greater range of motion, then versatility improves, but stability under pressure loss worsens
Solution Approach 1:
The rod lock mechanism is pre-positioned to engage at various points along the rod, allowing the platform to be locked stably at different heights. This preliminary positioning enables greater range of motion while maintaining stability through the locking action.
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 provides enhanced range of motion and reliability by locking the platform in position during sudden pressure losses, ensuring safe and controlled lifting and lowering operations, and maintaining horizontal stability against external forces.
Implementation Method 1
an air bag assembly and rod lock that are both connected with a platform. The air bag assembly is positioned between the platform and a base, and is operable to actuate when filled with high pressure gas or air in order to lift or support the platform
Implementation Method 2
The rod lock is preferably a pneumatic rod lock having a clamping mechanism that opens when placed under pneumatic load, and that closes automatically under low pressure conditions
Data Source
AI summary
An air bag based lifting apparatus can include a platform, a stabilizing mechanism for retaining the platform in a horizontal orientation, an air bag column connected with the platform and configured to retain a vertical rod passing through or adjacent the air bag column, and a rod lock connected with the platform and operable to secure the platform in a vertical position when locked. First and second valves can connect the air bag column and rod lock with a pressure source, and can be actuated in order to lift, lower, or support the platform. In the event of depressurization, the rod lock can lock to the vertical rod and support the platform.