Design And Research Of Winding And Cutting Device For Wire Rope Core Conveyor Belt

In order to avoid a sudden belt break accident during the operation of the belt conveyor,the regular replacement of the conveyor belt has become the key to ensuring the safe and efficient operation of the transportation system.Since the conveyor belts of modern mines are generally long in length,it is necessary to continuously rewind and cut the replaced old conveyor belts during the replacement process.In order to solve the problem that the existing steel wire rope core conveyor belt winding and cutting device is simple,the winding tension is unstable,and the winding deviation phenomenon occurs from time to time,and the reel is difficult to be smoothly drawn from the rolled conveyor belt;the cutting process will produce toxic and harmful smoke and sparks According to the special environmental requirements of coal mines,an automatic correction constant tension coiling device and a high-efficiency automatic cutting device have been designed and studied.This research first designed the structure of the coiling device and the tape cutting device.In view of the limited entrapment force of the traditional coiling device,the coil can not be taken out of the conveyor belt in time,and so on,a snail-shaped reel was designed.The radius of the reel increases linearly along the circumferential direction.The reel is equipped with a telescopic plate,and a pair of eccentric rollers are provided on the telescopic plate and the reel.When the telescopic plate is extended,the end of the reeling conveyor belt can be pressurized and locked.When the telescopic plate is retracted,loosen the end of the conveyor belt,and due to the scroll structure design of the reel,the reel can be quickly taken out of the conveyor belt when the telescopic plate is retracted.Aiming at the defect that the traditional belt winding equipment cannot correct the deviation of the conveyor belt in time,an automatic deviation correction structure is designed that uses double rollers with variable damping to generate a tension difference in the transverse direction of the conveyor belt to correct the deviation.Aiming at the problems of traditional belt cutting device cutting by grinding method,environmentally unfriendly,low efficiency,etc.,a cold cutting method that uses tooth cutters and disc cutters to mesh is designed,and the worm gear drive mechanism is optimized.A load-reducing transmission mechanism with double worms driving single worm gear is proposed.Secondly,by deriving the conveyor belt winding tension control model,a constant tension control strategy based on PI frequency conversion speed regulation is proposed.The R2R2D module in the Recurdyn dynamic simulation software is used to build the simulation model,and it is combined with Colink for constant tension.Control simulation,the simulation results show that through constant tension control,the conveyor belt winding tension can be basically stabilized at 2N/mm~2,and then a simple study on variable tension winding,and a more energy-saving winding method is obtained.Next,the variable damping double roller automatic correction mechanism was studied,the reason for the deviation of the conveyor belt during winding was analyzed in detail,and the belt module in Recurdyn was used to establish a simulation model of the variable damping double roller automatic correction device.The simulation results showed,The use of variable damping double rollers can realize rapid correction of deviation,which verifies the feasibility of the correction scheme.Subsequently,this article uses abaqus to perform a dynamic analysis of the cutting process of the designed fast cutting device,and obtains the force curve of the tool when cutting the steel cord conveyor belt,and then statics the stress and deformation of the tool and the box.Analysis has verified the feasibility of the device.Using Recurdyn to compare the force on the tooth surface of a single worm and a double worm mechanism,it is verified that the double worm mechanism can significantly reduce the force on the tooth surface of the worm gear.The mechanical analysis and the harmonic response analysis of the box lay a theoretical foundation for the subsequent prototype production and the determination of the working environment.Finally,in the on-site belt change operation of Datong Jinneng Group Tongxin Mine,industrial tests were carried out on the synchronous reeling device and the fast cutting device.The whole process was safe,efficient,and pollution-free,and verified the feasibility of the reeling device and the cutting device.And industrial applicability.