Emergency braking mechanism for an elevator using hydraulic and pneumatic actuation Online publication date: Fri, 14-Dec-2018
by Nitin Rohatgi; Krutarth Mehta; Parijat Sarkar; T. Christo Michael
International Journal of Reliability and Safety (IJRS), Vol. 13, No. 1/2, 2019
Abstract: The proposed idea aims at replacing the current safety mechanisms used by the elevators (i.e., governors) which are rope-based safety mechanism to rope independent, actuated by pneumatic and hydraulic cylinders. The proposed safety mechanism is lightweight and mounted on the top of the elevator. The mechanism involves a pneumatic cylinder actuating a hydraulic master cylinder using a class 1 lever for mechanical advantage. The hydraulic cylinder will pressurise the brake fluid and supply it to the callipers mounted on the elevator body. Callipers will cling to the guide rails upon actuation, thus stopping the elevator in very short distance. The effective force to be stopped by the callipers was calculated and parts were designed accordingly. Analyses of parts are done by considering maximum forces acting on hydraulic calliper mount and lever arm for varying thickness. Through calculations and analyses, the proposed system was found to be safe and reliable.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Reliability and Safety (IJRS):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com
Our Blog 
Follow us on Twitter 
Visit us on Facebook