Design And Research On Walking Stitutions Of Underground Emergency Drainage Vehicle

With the development of coal mining quantity unceasing increase, the attendant security issues have become increasingly prominent, especially in mine flood disaster. Although there are a number of mature drainage technology applied in mine production, because of unpredictable disasters, the existing drainage technology in emergency rescue of some appeared to catch the collar. Emergency drainage car with characteristics of high integration, emergency water demand rapid response, large flow, short preparation time,which can also realize the rapid rescue, and protect underground work personnel’s life and material safety, emerges as the times require.This article studies on walking mechanism of emergency drainage working vehicle which is applied in vertical depth below300m inclined. Due to the complex terrain and harsh working environment, working vehicle must have excellent maneuverability, stability and good ability of obstacle surmounting. Therefore, a overall design scheme of crawler chassis, hydraulic drive, track and track the running mode switch was put forward.Based on tracked vehicle design experience and running mechanism of the major technical indicators, the main structure parameters of walking mechanism of hydraulic drive system emergency drainage crawler was designed, the design and calculation of parameters; three-dimensional model of running mechanism of component parts was built, and the crawler frame was analysed with finite element.Based on RecurDyn platform, establishment of the virtual prototype model of the crawler system and simulation, demonstrate the feasibility of the program design by simulation results, analyze the driving performance, peaceful transition and stability factors of emergency drainage car on several complex terrains. Setting up parameters of kinematics and dynamics for several kinds of working conditions, evaluate and predict the walking performance of the crawler system. The simulation results show that the structural design of the crawler traveling mechanism is reasonable, flexible movement, smooth through the design of the topographic index. It can be smoothly straight steering, span0.3m high barriers to0.9m wide trenches, less than25degrees slope and other complex terrain, and has a good performance on surmounting obstacles and flexibility.Finally, test the prototype and simulation, examining the match between the hydraulic drive system and the walking system and reflect ion of walking mechanism performances.