Pneumatic Emergency Actuator Charging Without Springs or Compressors
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Solution Overview
Problem
Actuating drives with emergency power systems are complex due to the need for mechanical springs and additional components like compressors and motors, which increase structural complexity and weight.
Innovation Solution
A pneumatic energy store with a pressure chamber is used, eliminating the need for mechanical springs and compressors, and allowing direct conversion of pressure force into drive force, with the energy store being charged by the actuating drive's motor, reducing overall complexity and weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical springs are used for the energy store, then the emergency drive can be provided, but the dead weight and structural complexity increase
Solution Approach 1:
The patent applies pneumatic principles by using a pressure chamber with compressed gas (nitrogen or air) as the energy store instead of mechanical springs. The compressed gas provides the necessary force for emergency actuation while significantly reducing weight and structural complexity. The pressure chamber is integrated into the actuator housing and works with a piston to convert pneumatic pressure into mechanical motion for moving the slide.
2Reliability
If compressors and additional motors are added for emergency drive, then the emergency function is enabled, but the device complexity increases
Solution Approach 1:
The patent merges the emergency drive energy storage function into the existing actuator structure. The pressure chamber is integrated into the actuator housing, and the same motor that drives normal operation also charges the energy store by compressing the gas during normal operation. This eliminates the need for separate compressors and additional motors, reducing device complexity while maintaining emergency functionality.
Solution Approach 2:
The system uses its own motor to charge the pneumatic energy store during normal operation by compressing the gas in the pressure chamber. The actuator serves its own energy storage needs without requiring external compressors or additional power sources, making the system self-sufficient and simpler in structure.
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
This solution simplifies the actuating drive by reducing structural complexity, weight, and eliminating the need for compressors and additional motors, while providing a physically independent emergency drive system that can be easily monitored and charged.
Implementation Method 1
an energy store (6) which can be used for operating the emergency drive (5), having a pressure chamber (8) with an expandable volume (9), wherein it is possible during operation of the emergency drive (5) for an expansion movement of the pressure chamber (8) to be conducted to the output (4)
Data Source
AI summary
An actuator (1) having an energy accumulator (6), with which an emergency drive (5) can be supplied, is configured to be tensioned by an electric motor (2). The motor (2) displaces at least one engaging element (41, 42) of the energy accumulator (6), on which a restoring force of the energy accumulator (6) acts, along an actuating travel in normal operating mode.