Study On The Inspecting System Of Elevator Speed Governor

With the development of mordening-city,the elevator is used more and more widely.The safety of elevator is concerned much,when people take the elevator in living and working every day.Governor relates to the safety of elevator as speed monitoring element,due to its revolving and inspecting exactly.In order to assure the governor's motion-speed accuracy,electrical switch or mechanical switch acts promptly when governor circulates in a certain extent.The traction machine stop driving and brakes began locking,or mechanical structure and the safety gear make elevator car clamping on sliders,then the elevator car keep still.So,these prevent injure because of elevator car falling and jumping.Above those important functions,and regulations in Elevator Supervision And Inspection And Regular Inspection Rules-traction And Positive Drive Lift(TSG 7001-2009)part A 2.11(3)expliciting governor's inspecting rate and requirement,it is necessary to check governor regularly or unregularly to make sure that elevator is in safe.Elevator governor erected in machine room,an instrument which checks governor's motion-speed exactly is demanded easy-operating,convenient-carrying,senior-accuracy.An instrument which has these functions and modern control technology is introduced in topic.Kinds of technology are combined to a more intelligence and more precise appliance such as intelligence motor,impulsive controller,PLC microprocessor,single chip computer and sensors.This can check various of elevator governor automatically with following process,displaying and recording result.Main research contents in this topic contain:Firstly,exploit this device from speed and develop the governor's speed breadthwise.The governor's speed is converted into wheel's speed of EC-900,to avoid calculating speed in tradition testing.Emulate exactly and calculate governor's revolving speed,in order to record governor's motion-speed.Secondly,discuss the governor's speed endwise.On the basis of physical construction operational principle shift diagram,build mathematical model;Analysis governor's running character;Ascertain core factors.The result is that:acceleration influences governor's motion-speed accuracy before governor acts.Thirdly,on the basis of speed testing theory and the method of governor's motion-speed testing,machine design and electrical design are adopted efficiently.Message is delivered reliably between them,and easy-operating assistant is provided to testing.Finally,Assistant and main testing are connected through testing theory.This system is used to test governor's motion-speed after the procedure is formed.Comparison is launched between new type equipment and convention equipment,then study the testing results.Through lots of testing dates,it is easy to conclude that:testing results,testing range,and testing precision of the new type governor inspecting instrument reach senior level in industry,and the new type governor inspecting instrument satisfies requirements of structural inspection.