Braking Device Toggle Lever Actuation for Transport Trolleys
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing braking devices for transport trolleys with multiple wheels require cumbersome operation, as they necessitate identifying and positioning a swivel castor for brake actuation, making the process complex and less user-friendly.
Innovation Solution
A braking device utilizing a single actuating element with a toggle lever arrangement and a securing device, allowing for simultaneous braking of one or more support rollers with adjustable actuation path and angle, and compatibility with commercially available rollers, including the option for a steering roller with a cone-shaped braking surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional braking device with individual lockable castors is used, then reliable locking of the trolley is achieved, but the operation becomes cumbersome requiring identification and positioning of swivel castors
Solution Approach 1:
The patent combines multiple braking functions into a single centralized braking device with one actuating element. Instead of requiring separate operation of individual castor brakes, the invention integrates the braking mechanism so that one actuating element controls the braking of multiple support rollers simultaneously, eliminating the need to locate and position specific swivel castors.
Solution Approach 2:
The single actuating element serves multiple functions by simultaneously actuating braking elements for multiple support rollers. The braking device is designed to work with any support roller on the trolley frame, making it universal and eliminating the need to identify specific castors for braking operation.
2Reliability
If multiple individual braking elements are provided for each castor, then reliable braking of each wheel is achieved, but the device complexity increases
Solution Approach 1:
The patent merges multiple individual braking mechanisms into a single integrated braking device. The actuating element, transmission mechanism, and braking elements are combined into one unified structure that can brake multiple rollers, reducing the overall number of components and simplifying the device structure.
Solution Approach 2:
While integrating multiple functions, the invention uses modular braking elements that can be individually adjusted or replaced. Each support roller has its own braking element that can be independently positioned along the roller axis, allowing for segmented adjustment while maintaining overall system simplicity.
3Ease of manufacture
If fixed actuation path is used in braking device, then manufacturing is simplified, but manufacturing tolerances and wear cannot be compensated
Solution Approach 1:
The patent implements an adjustable actuation path for the braking element along the roller axis. This dynamic adjustment capability allows the braking element to be positioned at different locations to compensate for manufacturing tolerances and wear, while the overall device structure remains relatively simple and easy to manufacture.
Solution Approach 2:
The invention allows for adjustment of the actuation path parameter (distance between braking element and roller axis) to compensate for variations in manufacturing tolerances and wear conditions. This parameter adjustment maintains reliable braking performance without requiring complex manufacturing processes.
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 simple, efficient, and user-friendly operation with improved braking effectiveness, adaptable to various manufacturing tolerances and wear conditions, while maintaining compatibility with existing transport devices.
Implementation Method 1
The securing means can have a tension element acted upon by spring force, for example a bent or angled tension arm
Implementation Method 2
a brake pad is pressed against a running surface can be applied to the roller
Data Source
AI summary
The braking mechanism has multiple carrying rollers (6,10) for a brake application and an actuating element (14) which has two pivoted toggle levers over a toggle lever assembly. A brake element is provided in actuation connection. The safety units exert a safety movement in direction of an adjacent end position, releasing position or braking position on a toggle lever assembly outside of an elongated toggle lever position.