Stepless speed regulating hydraulic driving system of spiral conveyer for super-large diameter shield machine

Abstract

The invention relates to a stepless speed regulating hydraulic driving system of a spiral conveyer for a super-large diameter shield machine. The stepless speed regulating hydraulic driving system comprises an oil case, a hydraulic pump set, a speed regulating hydraulic circuit, a reducer, a hydraulic motor set and a control unit. An oil separating and collecting valve module, a rinsing control valve module, a control pump and a sensor module are arranged in the speed regulating hydraulic circuit. The hydraulic pump set comprises a first hydraulic pump and a second hydraulic pump. The first hydraulic pump and the second hydraulic pump are both provided with displacement regulating mechanisms. The hydraulic motor set comprises a first hydraulic motor and a second hydraulic motor which operate simultaneously. The first hydraulic motor and the second hydraulic motor are both provided with output variable regulating mechanisms. The displacement regulating mechanisms and the output variable regulating mechanisms are in communicating connection with the control unit. The hydraulic driving system can meet the requirements for large torque and high rotation speed, has the functions of variable-speed regulating, overload protection and double-way rotating and is safe and reliable, and the stability of the operation performance of the spiral conveyer is guaranteed effectively.

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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