Compact Elevator Safety Gear Activation With Direct Force Transfer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electromechanical safety gear systems for elevators require larger dimensions due to the use of levers and cams, leading to space constraints and potential collisions with other installation elements, and are complex in design and manufacture, necessitating modifications to the chassis.
Innovation Solution
A compact electromechanical activation system for elevator safety gear, utilizing aligned drive means and mobile wedging means, including a holding coil and reset coil, which are vertically arranged to eliminate unnecessary volume and complexity, allowing direct force transmission without levers, and is adaptable to various safety gear types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If levers and cams are used for transmission means, then the safety gear can be activated, but the dimensions of the electromechanical activation system increase and it protrudes from the longitudinal member
Solution Approach 1:
The patent removes the levers and cams from the transmission means, extracting the problematic mechanical components that caused increased dimensions. The activation system is redesigned to eliminate these protruding elements, allowing the system to fit within the longitudinal member without modification.
Solution Approach 2:
Instead of using levers and cams to transmit drive, the patent inverts the approach by using a direct linear transmission mechanism. The mobile protective plate moves linearly to directly position the wedging roller, eliminating the need for intermediate mechanical linkages that increased the system volume.
2Reliability
If levers and cams are used for transmission means, then the safety gear can be activated, but modifications to the chassis are required to accommodate the larger dimensions
Solution Approach 1:
The patent extracts the levers and cams that caused the dimension increase, eliminating the need for chassis modifications. The streamlined transmission means fits within the existing longitudinal member, preserving the original chassis design and simplifying manufacturing and installation.
3Reliability
If conventional electromechanical safety gear is used, then safety function is provided, but the design and manufacture become complex
Solution Approach 1:
The patent removes levers and cams from the transmission means, extracting the complex mechanical linkages that increased design and manufacture complexity. The simplified linear transmission mechanism reduces the number of components and assembly steps while maintaining safety functionality.
Solution Approach 2:
The patent inverts the conventional approach by eliminating intermediate mechanical linkages and using direct linear motion transmission. This simplifies the overall design, reduces manufacturing complexity, and decreases the number of parts that require precision fabrication and assembly.
4Power
If larger coils are used in conventional systems, then sufficient power is provided, but the system consumes more power and occupies more space
Solution Approach 1:
The patent removes the levers and cams that amplified the need for larger coils. With the direct linear transmission mechanism, the force is transmitted more efficiently, allowing the use of smaller, more power-efficient coils that consume less energy while providing sufficient power for safety gear activation.
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 system achieves a compact design that can be easily integrated into elevator frames without modifications, reduces susceptibility to failure, and consumes less power due to smaller coils, while maintaining efficient operation across one-way, two-way, and instantaneous safety gear systems.
Implementation Method 1
a holding coil (2), said holding coil being in charge of withstanding the force of the wedging spring (8) and keeping the mobile protective plate (13) in the non-locking position
Implementation Method 2
a reset coil (1) arranged in front of the holding coil (2), said reset coil being in charge of overcoming the force of the holding coil (2) and moving the mobile protective plate (13) to the locking position
Implementation Method 3
with a wedging spring (8) arranged on the holding coil (2), said spring being in charge of pushing the mobile protective plate (13) towards the locking position
Implementation Method 4
The electromechanical drive is executed vertically, which saves in additional levers, compared with other configurations, and, therefore, the force is transmitted directly, without losing any of such force due to the mentioned levers
Data Source
AI summary
An activation system having a fixed protective plate (10) in which there are fixed drive means based on a reset coil (1) and a holding coil (2) and release means arranged in alignment, a mobile wedging means activated by the drive means, and wherein these mobile wedging means are arranged in parallel with respect to the drive means, one or two wedging rollers (6) according to if said roller is for a one-way safety gear system or for a two-way safety gear system, respectively. A compact system that can be adapted to the existing safety gear is achieved, wherein electromechanical drive is executed vertically, which saves in additional levers, susceptibility to failure is lower and the reset and holding coils are smaller.