Stepless speed regulation hydraulic drive system of screw conveyor for super large diameter shield tunneling machine

Abstract

The invention relates to a stepless speed-regulating hydraulic drive system for a screw conveyor for super-large-diameter shield tunneling, which includes a fuel tank, a hydraulic pump group, a speed-regulating hydraulic circuit, a reducer, a hydraulic motor group, and a control unit. There are oil separation and oil collection valve modules, flushing control valve modules, control pumps, and sensor modules. The hydraulic pump group includes hydraulic pump 1 and hydraulic pump 2. Both hydraulic pump 1 and hydraulic pump 2 are equipped with displacement adjustment mechanisms , the hydraulic motor group includes hydraulic motor 1 and hydraulic motor 2 that operate synchronously, and hydraulic motor 1 and hydraulic motor 2 are both provided with an output variable adjustment mechanism, and the displacement adjustment mechanism and output variable adjustment mechanism are all communicated with the control unit . The present invention can satisfy the hydraulic drive system with high torque and high rotational speed, realize the functions of variable speed adjustment, overload protection, and bidirectional rotation, is safe and reliable, and effectively guarantees the stability of the operation performance of the screw conveyor.

Description

technical field [0001] The invention relates to the technical field of hydraulic control of screw conveyors, and relates to a stepless speed-regulating hydraulic drive system for screw conveyors for super-large-diameter shield tunneling machines, which can meet the needs of large-torque, high-speed screw conveyor drive systems for super-large-diameter shield machines. need. Background technique [0002] At present, the screw conveyor, as one of the key components of the shield machine, mainly transports the muck in the excavated soil bin to the muck transfer system such as the belt conveyor. The driving mechanism of the screw conveyor of the existing shield machine is driven by a hydraulic motor, the output torque is small, and the excavation capacity is low, which seriously affects the speed of the whole machine in the construction of the shield machine and increases the construction cost and other problems. The reliability and high efficiency of the screw conveyor are rel...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the present invention provides a stepless speed-regulating hydraulic drive system for a super-large-diameter shield screw conveyor, which solves the problems of small driving torque, insufficient escape torque, and high speed in the current large-diameter shield screw conveyor drive system. It can adapt to the working conditions of high torque and high speed, and at the same time, it can realize functions such as stepless speed regulation, overload protection, two-way rotation, etc., with stable operation performance and good use effect

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