A Study On Drive System Of Cutterhead Of Double X Gripper TBM

At present,Hard Rock Tunnel Boring Machine(TBM)has been adopted as the main construction machinery in urban rail transport construction,mountain tunnels and hydraulic engineering.Under the circumstances of small-diameter and large-range breakage tunnels,Double X Gripper TBMs with small diameter and large internal space are demanded.The number of manufacturers that have researched Double X Gripper TBMs is quite few worldwide.However,the drive system of cutter head as the core system of Double X Gripper TBM is directly related to the stability of the machine and the construction efficiency.This paper researches and improves the design of drive system and experimental verification of Double X Gripper TBM cutter head drive system.Firstly,by analyzing the calculation methods of cutter disc torque at home and abroad,the method of theoretical analysis combined with practical experience are chosen to calculate the TBM design cutter disc torque.According to the calculation results,design the driving power select the driving motor and power distribution system.After analyzing the control methods of coupling and non-coupling,it is found that the two driving strategies of parallel and serial control of non-coupling control can be applied to control the cutter head drive of Double X Gripper TBM,also the logical interlocking of the start-up operation of the cutter head is designed for the process.Then through the data analysis based one the field application,to compare and analyze the synchronization of the current,torque and cutter head torque of multi-motor synchronous operation,so as to verify the design applicability of the cutter head drive system,to reveal the algorithm shortage of the slip synchronization,and to propose a coupled synchronization control algorithm based on load observation.To observe the motor load by sliding mode differentiation link,to achieve sound synchronization effect through the simulation of the algorithm.Through the improvement of the design and control of the Gripper TBM cutter head drive system,the study improved the equipment stability,equipment efficiency and construction equipment cost control of the Gripper TBM,also provided reference for subsequent research on the same type of equipment.