Telescoping Mast Pneumatic Deployment and Mechanical Retraction
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Solution Overview
Problem
Existing telescoping mast systems are time-consuming and inefficient in deployment and retraction, particularly due to reliance on gravitational force and environmental conditions, posing risks to operators and affecting system efficiency.
Innovation Solution
A rapid deployment and retraction telescoping mast system incorporating a pneumatic deployment mechanism with a compressor, storage tank, and isolation valve, combined with a mechanical retraction mechanism featuring a resilient member, retraction reel, and motor, allowing controlled and consistent extension and retraction of interconnected tube sections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If gravitational force is used for retraction, then the system structure is simple, but the retraction speed is inconsistent and dependent on environmental conditions
Solution Approach 1:
The patent replaces the purely gravitational mechanical retraction system with a controlled pneumatic system. The pneumatic cylinder provides active mechanical force to retract the telescoping mast at a controlled rate, eliminating dependence on environmental conditions and payload weight variations.
Solution Approach 2:
The patent introduces a pneumatic retraction mechanism using a pneumatic cylinder connected to the telescoping mast. Compressed air or inert gas is used to provide controlled retraction force, enabling consistent and reliable retraction speed independent of gravitational variations and environmental conditions.
2Speed
If pneumatic deployment is used, then deployment speed is rapid, but the system requires additional components (compressor, tank, valves)
Solution Approach 1:
The patent pre-charges a storage tank with compressed air or inert gas before deployment is needed. This preliminary action allows the system to achieve rapid deployment when needed without requiring a large compressor during operation, reducing the immediate system complexity while maintaining fast response capability.
Solution Approach 2:
The patent uses disposable or replaceable seals and gaskets in the pneumatic system that can be easily replaced rather than designing complex sealed systems. This approach reduces the complexity of maintaining long-term sealed pneumatic components while preserving rapid deployment capability.
3Speed
If faster retraction is achieved by increasing mast weight, then retraction speed improves, but the overall system weight increases
Solution Approach 1:
The patent replaces gravity-dependent mechanical retraction with an active pneumatic retraction system. This substitution eliminates the need to increase mast weight for faster retraction, as the pneumatic cylinder provides the necessary force independently of the mast's weight.
Solution Approach 2:
The patent uses the pneumatic cylinder to provide a counteracting force that actively pulls the mast downward during retraction, counterbalancing the weight of the mast and payload. This allows controlled retraction without requiring additional weight on the mast itself.
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 rapid, controlled, and consistent deployment and retraction of telescoping masts under various environmental conditions, improving operational safety and efficiency while maintaining a lower cost design.
Implementation Method 1
Compressed air is introduced into the plurality of tubes when the isolation valve is in the open position wherein increasing the pneumatic pressure within the sealed envelope of the plurality of tubes. The increase of pressure generated by the deployment mechanism provides a deployment force within the plurality of interconnected tubes causing controlled deployment of the telescoping mast.
Implementation Method 2
The resilient member extends from the retraction reel and is rigidly attached to the top tube of the plurality of tube sections
Implementation Method 3
Retraction of the mast is generally achieved by allowing gravitational forces to return the tubes and associate load to a nested position
Data Source
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AI summary
A rapid deployment and retraction telescoping mast system for controlling the height of a mast. A retraction mechanism including a resilient member, a retraction reel, a reel shaft, and a motor disposed about a frame. The resilient member extends from the retraction reel and is rigidly attached to a top tube of the mast through a sealed passage. The reel shaft rotates the retraction reel and winds the resilient member creating a retraction force on the top tube causing controlled retraction of the mast. A deployment mechanism including a compressor, storage tank, exhaust valve and isolation valve arranged about the frame and in communication with the mast. The compressor generates pressurized air to be communicated to the mast when the isolation valve is in the open position. The increase of pressure generated by the deployment mechanism provides a force within the mast thereby controlling its deployment.