Research And Application Of Key Technologies For Elevator Brake Test Load Vehicl

With the rapid development of society and the rapid growth of population,there are more and more high-rise buildings,so the installation of elevators has also increased sharply,resulting in a significant increase in the workload of elevator safety testing.Because the work efficiency of ordinary manual handling weights for safety test is too low,it is necessary to design a load test vehicle with strong adaptability,high obstacle crossing performance and good stability to replace manual handling test weights to improve work efficiency.The load test vehicle needs to be equipped with obstacle crossing structure,which can climb basic obstacles such as stairs and threshold.This paper mainly studies the structural design and control system design of load test vehicle.The planetary wheel obstacle crossing structure and differential structure are combined in the vehicle body structure,and the vehicle kinematics model is established,the motion trajectory of the vehicle is decomposed,and the trafficability in plane motion is confirmed;The Solid Works three-dimensional model of the vehicle is established and imported into the dynamic simulation software ADAMS for simulation analysis.The inclination change,torque change and power change of the vehicle when climbing stairs and slopes are compared under multiple conditions,and the structural design is optimized.The F103 chip of Cortex-M3 core is used as the core to build the control system.The appropriate crystal oscillator is selected and equipped with corresponding motor drive module,ultrasonic ranging sensor module,remote control module and key module.The research in this paper lays a good foundation for further designing a load test vehicle with better structural performance and higher intelligence.