| Because of the harsh coal mining environment and other reasons,coal mine accidents occur frequently.In order to carry out rescue safely and quickly after a mine accident,a vertical rescue technology has been developed.When a coal mine accident occurs,the trapped personnel can be lifted to the ground safely,quickly and safely through the vertical rescue system.Through the investigation of the vehicle-mounted rescue system which has been developed successfully,we find that there are still some problems,such as lack of rope arrangement device,uneven winding,disordered rope,rope biting and so on.Although there are many rope arrangement devices in the market now,these only make the rope unbiased relative to the reel,and do not eliminate the deviation angle.There is no fundamental solution to the problem of rope disorder;second,there is no overload protection device such as jam cabin,the rescue passage through rapid drilling technology may be inclined,and the ground geology will become loose after the mine accident,and the rescue passage may be deformed,so the rescue cabin may be stuck in operation,because the power source can not be closed intime,the wire rope.The tension increases indefinitely in an instant,resulting in the wire rope not being broken,which not only seriously affects the service life of the wire rope,but also causes damage to the transmission system.In order to regulate the winding and discharging of wire rope and avoid the disorder of wire rope,a winch translation device which can make the wire rope retracted and released without deviation angle is set up in this paper.In this paper,the structure,working principle,structure and design of key components of the winch translation device are described in detail,and the force of the device is analyzed to provide a theoretical basis for the translation device.The overall model of the winch translation transmission device is built by using UG software,and the virtual prototype model of the translation mechanism is built in ADAMS software to simulate and analyze it.The velocity,displacement and speed of the main components are obtained.Compared with the theoretical requirements,it not only verifies that the translation device meets the design requirements,but also verifies the accuracy of the model.In order to solve the problem of jamming and other overload in emergency rescue winch,a winch overload protection device is designed by using the characteristics of speed and power diversion of differential gear train.By changing the speed of inner gear ring,the speed of planetary frame or load can be adjusted.This overload protection device can not only realize overload protection,but also realize the functions of soft start and infinite speed regulation.In this paper,the structure parameters of the overload protectiondevice and the realization principle of each function are designed.Similarly,the three-dimensional model and simplified model of the winch overload protection device are built by using the three-dimensional modeling software UG.In order to verify the function of the device more accurately,the rigid-flexible coupling model of the overload protection device is built by combining ADAMS with ANSYS,and the functions of the device are simulated.The analysis verifies the feasibility and rationality of the winch overload protection device.The static analysis of the brake device in the winch overload protection device is carried out by using WORKBENCH,which provides a basis for the optimal design of the device. |
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