Contact Safety Device Micro-Movement Amplification
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Solution Overview
Problem
Mechanical systems with drive and driven parts often pose safety risks due to incomplete alignment, leading to potential hazards for operators and surroundings, as the drive action can be dangerous if the barrel is not perfectly locked with the breech ring, especially when parts are only a few millimeters apart.
Innovation Solution
A contact safety device is introduced, comprising a safety unit connected to one of the parts with a probe that activates an amplifying lever and immobilizing lock, transforming rectilinear micro-movements into circular movements to ensure proper alignment and prevent drive shaft rotation if the parts are not correctly assembled.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a safety device is designed to guarantee mechanical locking when parts are not in position, then operator safety is improved, but device complexity increases
Solution Approach 1:
The patent introduces a safety unit as an intermediary component between the mobile part and control means. This safety unit includes a probe that detects the position of the mobile part and an immobilizing lock that prevents rotation of the drive shaft when misalignment is detected. The intermediary safety unit translates the position detection into a locking action, thereby improving operator safety without requiring complex integration into the existing mechanism.
Solution Approach 2:
The patent replaces complex mechanical sensing and control systems with a simplified mechanical probe-lock mechanism. The probe mechanically detects the position of the mobile part, and the immobilizing lock mechanically prevents drive shaft rotation. This mechanical substitution eliminates the need for complex electronic sensors and control circuits, improving safety while maintaining relatively simple device structure.
2Measurement precision
If the safety device uses an amplifying lever to transform micro-movements into large circular movements, then detection precision is improved, but device complexity increases
Solution Approach 1:
The patent employs an amplifying lever that transforms small linear movements of the probe into large circular movements of the lock. The lever acts as a mechanical amplifier, where the probe's small displacement along its axis is converted into a large rotational movement of the immobilizing lock. This curvature-based amplification mechanism enables precise detection of contact conditions while maintaining a relatively simple mechanical structure.
3Loss of time
If the drive shaft is immobilized in a fraction of a revolution, then safety response time is improved, but manufacturing precision requirements increase
Solution Approach 1:
The safety unit is pre-configured with the probe positioned to detect the nominal functioning position of the mobile part. The immobilizing lock is pre-positioned to engage with the drive shaft at a specific point. When misalignment occurs, the probe immediately detects the position deviation and triggers the lock to immobilize the drive shaft in a fraction of a revolution. This preliminary configuration enables rapid safety response without requiring high manufacturing precision during 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 device effectively prevents hazardous operation by ensuring mechanical locking of the drive shaft, providing reliable immobilization until correct alignment is achieved, thus ensuring operator safety and preventing unintended movement transmission.
Implementation Method 1
amplifying means constituted by an amplifying lever activated by the probe and an immobilizing lock activated by the amplifying lever meshed on the control means so as to transform a rectilinear micro-movement into a circular movement of large magnitude
Data Source
AI summary
A contact safety device between two mechanical parts mobile which respect to one another to guarantee the internal kinematics, by the release or activation of control means, wherein said device incorporates a safety unit connected to one of said two mechanical parts enclosing a probe activated by one of said two mechanical part and amplifying means constituted by an amplifying lever activated by said probe and an immobilizing lock activated by said amplifying lever meshed on said control means so as to transform a rectilinear micro-movement into a circular movement of large magnitude.