Structure Design And Simulation Study Of Elevator Safety Gear

Through the analysis of existing safety gear technique, it was found that the material of brake pad is a key factor restricting the research and development of safety gear of ultra-high-speed elevators. By the research of carbon fiber composite material for the brake pad, a kind of safety gear with the rated speed of 10 m·s-1 and total load 8 000 kg was designed. The ultra-high-speed elevators could be stable stopped and the damage for the guide and brake pad is slight.The main work of this paper is as follows:The development and use of elevator in China was introduced. The research objectives and the main research directions were put forward by analyzing the advantages and disadvantages of the current use of the elevator safety clamp.With the careful analysis the performance, function and characteristics of the existing elevator safety gear, the research objectives of this project was determined. The calculation method of braking force of the safety gear under different conditions was cleared and the material of brake pad of safety gear of ultra-high-speed elevators was introduced.By comparing the advantages and disadvantages of software UG、ProE and SolidWorks, SolidWorks was selected to create the part drawing and assembly drawing of safety gear according to the selection and calculation of safety gear.Based on the 3D model of safety gear, the static simulation is carried out. And the simulation analysis of the key parts including the frame, the U-shape springs, the fixed wedge and moving slide of safety gear were simulated with software And ANSYS Workbench. So the stress, stain, displacement and safety factors were determined.According to the technical requirement of the wedge and moving slide, the stock material was chosen and the machining process route were established.Static loading test and type testing was carried out after the production has been produced. The static load test shows that the sliding force and the design force is very approximate. The type tests shows that the braking deceleration is in line with the standard of GB 7588-2003.