Elevator Guide and Braking Apparatus with Elastic Mounting
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Solution Overview
Problem
Conventional elevator systems face a dilemma where the activation distance of the braking device is greater than the tolerance distance of the guide device, leading to slower and less efficient braking, which compromises travel comfort and reaction time due to the need for a larger movement of the braking element to engage the guide track.
Innovation Solution
The proposed apparatus features a holder, guide device, and braking device configuration where the guide device is elastically movable relative to the holder by a large tolerance distance, and the braking device has a reduced activation distance, allowing it to quickly and efficiently engage the guide track, with the carrier of the braking device rigidly coupled to the guide device to follow lateral movements, thus reducing abrupt movements and enhancing travel comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the activation distance of the braking device is increased to accommodate guide track deviations, then the braking device can engage the guide track reliably, but the braking response time increases and braking efficiency decreases
Solution Approach 1:
The braking device is designed with dynamic adaptability through the elastic mounting of the guide device. The carrier of the braking device is rigidly coupled to the guide device, allowing the entire assembly to move laterally with the guide device. This dynamic configuration enables the braking element to maintain an optimally small activation distance while still accommodating guide track deviations through the elastic movement of the guide device, thereby reducing braking response time without compromising engagement reliability.
Solution Approach 2:
The patent combines the braking device with the guide device by rigidly coupling the carrier of the braking device to the guide device. This merging allows the braking device to benefit from the elastic mounting and lateral movement capability of the guide device, eliminating the need for a large activation distance that would otherwise be required to ensure reliable engagement with a deviating guide track.
2Ease of operation
If the guide device is elastically mounted to accommodate guide track deviations, then travel comfort is improved, but the braking device requires a larger activation distance which reduces braking efficiency
Solution Approach 1:
The braking device is merged with the guide device through rigid coupling of the carrier to the guide device. This integration allows the braking device to utilize the elastic mounting and lateral movement capability of the guide device, enabling the braking element to maintain a small activation distance while the guide device continues to provide comfort by accommodating guide track deviations through elastic movement.
Solution Approach 2:
The system employs dynamic adaptability where the guide device can move laterally within elastic limits to accommodate guide track deviations, maintaining travel comfort. Simultaneously, the braking device benefits from this dynamic positioning, as the carrier follows the guide device's lateral movements, keeping the braking element optimally positioned for quick engagement with minimal activation distance.
3Loss of time
If the braking element is positioned closer to the guide track to reduce activation distance, then braking response time is improved, but the risk of premature engagement due to guide track deviations increases
Solution Approach 1:
The elastic mounting of the guide device provides dynamic adaptability that allows the system to accommodate guide track deviations without requiring a large activation distance. The guide device can move laterally within elastic limits, maintaining the braking element's close proximity to the guide track for quick response while preventing premature engagement through the controlled elastic movement range.
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 configuration allows for comfortable vertical movement of the elevator car with minimal abrupt lateral movements, enabling efficient, fast, and reliable braking by reducing the activation distance of the braking device, thereby overcoming the limitations of conventional systems.
Implementation Method 1
the guide device is held and mounted on the holder such that the guide device is elastically movable relative to the holder in a direction transverse to the longitudinal direction of the guide track
Implementation Method 2
the braking element which is pressed against the guide track when the braking device is activated and can thus exert a desired braking force on the traveling body coupled to the braking device due to the friction generated thereby
Data Source
AI summary
An apparatus for guiding and braking an elevator system traveling body movable along a guide track includes a holder fastened to the body, a guide device and a braking device. The holder transmits guiding forces between the guide device, guided on at least one track surface in the longitudinal direction, and the body. The guide device is held on and is elastically movable relative to the holder transverse to the longitudinal direction by at least a predetermined tolerance distance. The braking device includes a carrier and a braking element movable between a deactivated configuration, in which a braking surface of the braking element is laterally spaced apart from the guide track, and an activated configuration, in which the braking surface abuts the guide track, in a reversible manner by an activation distance transverse to the guide track. The carrier of the braking device is rigidly coupled to the guide device.