Tilting Safety Element for Load Movement Emergency Stop
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Solution Overview
Problem
Existing safety devices for securing loads during movement lack immediate and reliable emergency stop functionality, often requiring repair and incurring costs, and can be damaged irreversibly upon triggering, limiting their use and safety effectiveness.
Innovation Solution
A safety device with a tilting safety element that moves freely along a guide element's longitudinal axis, allowing for immediate stopping through canting, enabling the safety device to stop at any point along the guide element without damage, and allowing for quick reset and reuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If locking means are used to stop the load at predetermined positions, then the safety device can stop the load, but it can only stop at specific predetermined locking points rather than immediately at any position
Solution Approach 1:
The safety element is designed to tilt dynamically from an initial position to a braking position upon triggering. This dynamic movement allows the safety element to contact the guide element at any position along its length, enabling immediate stopping rather than being constrained to predetermined locking points. The tilting mechanism transforms the safety element's orientation to create friction-based braking contact with the guide element.
2Reliability
If conventional safety devices are triggered, then they stop the load, but the safety device is damaged or destroyed and requires repair
Solution Approach 1:
The guide element is designed with a prolonged contact surface that distributes the braking force over an extended area. This prevents concentration of stress at single points, avoiding damage to both the safety element and guide element during triggering. The flat, extended surface acts as a cushioning zone that absorbs the impact forces generated during emergency braking.
Solution Approach 2:
The contact geometry between the safety element and guide element is specifically designed to change parameters of force distribution. By using a flat, extended contact surface on the guide element rather than a point contact, the braking force is distributed over a larger area, reducing stress intensity and preventing material failure during the braking event.
3Speed
If the safety element is designed to contact the guide element for braking, then immediate stopping is achieved, but friction and wear occur between the contact surfaces
Solution Approach 1:
The contact surface geometry is changed from a small area to a prolonged flat surface. This parameter change in contact area reduces the pressure intensity (force per unit area) during braking, thereby minimizing wear and friction while still achieving the necessary stopping force through the distributed contact.
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 solution provides immediate and effective stopping of loads during emergency situations, preventing damage to the safety device and allowing for rapid return to operational readiness, enhancing safety and reducing costs associated with repair.
Implementation Method 1
In contrast to braking effects, which are based purely on friction between two flat surfaces, canting can lead to an extremely fast stopping process
Implementation Method 2
A spring 13 acts on the securing element 5 at a point 12 of the ring which is at least essentially diametrically opposite the bearing point 10 of the securing element
Data Source
AI summary
The invention relates to a safety device (8) for securing a moving device (1) intended for moving a load (2) against uncontrolled movements of the load (2) when there is a deviation from at least one intended operating condition of the moving device (1), wherein the safety device (8) comprises a safety element (5) which, in the event of a deviation from the at least one intended operating condition, in particular a deviation from an intended magnitude of a force acting on the safety device (8), triggers an emergency stop lock by actuating the safety element (5). In order to improve the functional reliability of such a safety device (8) so that it stops as immediately as possible upon the occurrence of an emergency stop event and is thereby damaged to the least extent possible, it is proposed that the safety element (5) surround a guide element (3) and is arranged such thatthat the locking element (5), when at least one intended operating condition is met, is arranged to be freely movable at least substantially in the intended direction of movement relative to the guide element (3) and is movable along or at least parallel to a longitudinal axis (3b) of the intended direction of movement together with a support of the locking device (8) on which the locking element (5) is mounted, and means are provided by which, in the event of a deviation from at least one operating condition, the locking element (5) performs a tilting movement, by virtue of which the locking element (5) is arranged in a canting position against the guide element (3).