Abstract: With the development of intelligent mining,the straightness control of scraper conveyor is of great significance for coal mine safety and efficient mining.Aiming at the low accuracy of scraper conveyor,a method of fusion and straightening based on the prediction of space kinematics and long short time memory neural network trajectory is proposed.Firstly,the movement laws of the floating connection mechanism of the hydraulic support and scraper conveyor are analyzed with the spatial kinematics knowledge of the industrial robot,which is programmed into the Unity3D simulation system through C# language,and the connection between hydraulic support and scraper conveyor is realized by capturing the key points on the middle trough of scraper conveyor through the joint of pushing mechanism,which realizes the precise pushing of hydraulic support and solves the influence of pin ear clearance more ideally.Secondly,considering the influence of sensor noise and cutting bottom trajectory on the track detection of scraper conveyor,after the relevant compensation in the simulation system,LSTM (Long Short Time Memory) neural network is used to forecast the track of scraper conveyor in MATLAB.Finally,according to the actual operating conditions,the correction model of target straightening trajectory and the trajectory attitude transformation model are established,and based on the obtained scraper conveyor track,the position difference between hydraulic support and the corresponding middle trough is determined after timely frame removal,and the straightening of scraper conveyor is realized by precise pushing and advancing of the hydraulic support based on the movement law of the floating connection mechanism.Through the comprehensive verification of virtual experiment and physical experiment,the modified model and conversion model established in this paper have strong reliability,and the straightening tests are carried out in the simulation system and in the laboratory with undulations in the bottom plate,and the straightness errors of the straightening method proposed in this paper are within ±0.2 cm and 0.08 cm respectively,which meets the straightening accuracy requirements and provides ideas for the straightening research of scraper conveyor.