Shield tunneling machine cutterhead driving system based on hydro-viscous drive

Abstract

The invention discloses a shield tunneling machine cutterhead driving system based on hydro-viscous drive. The shield tunneling machine cutterhead driving system comprises multiple groups of driving mechanisms. Each group of driving mechanism is connected with a transmitting mechanism through an input shaft, the transmitting mechanism is connected with a cutterhead driving small gear with planetary deceleration through an output shaft, and the cutterhead driving small gear is in meshed transmission with a cutterhead driving large gear to drive a cutterhead to rotate. The shield tunneling machine cutterhead driving system is characterized in that a hydro-viscous drive mechanism comprises a driving drum fixed to the input shaft and a driven drum fixed to the output shaft. The driving drum is connected with multiple groups of main friction plates through splines, the driven drum is connected with multiple groups of auxiliary friction plates through splines, and the main friction plates and the auxiliary friction plates are arranged in a cross mode. A piston cavity is formed in the driving drum, a piston is arranged in the piston cavity, and the piston can drive the main friction plates to adjust the gaps between the main friction plates and the auxiliary friction plates. The shield tunneling machine cutterhead driving system based on the hydro-viscous drive has the advantages of being stepless in speed regulation, large in driving power, excellent in impact resistance and good in overload protection performance.

Description

technical field [0001] The invention relates to a shield machine cutterhead drive system, in particular to a shield machine cutterhead drive system driven by a motor and based on liquid viscous transmission. Background technique [0002] Since ancient humans dug caves as the earliest habitats, humans have been developing their living space underground. With the development of society, the scale of cities continues to expand, the population expands rapidly, and human demand for space continues to grow. The limited space on the surface of the earth prompts humans not only to explore outer space, but also to direct the attention of space expansion to the inner space of the earth. Underground space has been placed in front of us as a resource at our fingertips. The use of underground space development for road traffic and transportation construction has become a construction hotspot in the transportation industry. During the long-term development of human society, human tunnel...

AI Technical Summary

Problems solved by technology

However, the existing motor-driven shield machines use ordinary wet clutches to control the power transmission of the motors, and ordinary wet clutches can only work in the on-off state, resulting in large impacts when loading, and complex geological conditions—such as hard rock formations In the composite stratum intersecting with the soft soil layer, the cutterhead is subjected to huge cutting torque changes, which can easily cause the cutterhead to be stuck, which in turn will cause the motor to be stuck and damage the motor and the main bearing.

In the actual excavation project, due to the frequent burnout of the cutter head motor of the shield machine, the excavation cost remains high and the excavation efficiency is relatively low

The shield machine cutter head drive system with hydraulic drive has the advantages of small size, good impact resistance and overload protection performance, but the disadvantage of hydraulic drive is obvious, that is, the drive power is not large, and it can only be used in soft soil and other soils. soft and airy

Therefore, how to improve the motor-driven shield machine cutter head drive system, improve its anti-impulse ability and overload protection performance, and solve the problem of easy damage to the motor has become an urgent task in the industry.

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