Real-time monitoring device and method for borne pressure of hobs of normal pressure hob-changing cutterhead

Abstract

The invention provides a real-time monitoring device and method for the borne pressure of hobs of a normal pressure hob-changing cutterhead. According to the real-time monitoring device and method forthe borne pressure of the hobs of the normal pressure hob-changing cutterhead, geological information of the shield machine excavation face can be deduced according to the borne pressure, accordinglyshield machine tunneling parameters are adjusted; and in this way, on the one hand, overloading and severe vibration of the hobs are avoided, and the service life of the hobs is prolonged;, on the other hand, the shield tunneling efficiency is also improved, and the construction cost is reduced. The real-time monitoring device comprises a cylinder body. The cutterhead is arranged at the left endof the inner wall of the cylinder body and internally provided with the hobs; an end cover is arranged at the right end of the inner wall of the cylinder body; a welding seat and a normal pressure hob-changing device are sequentially arranged on the outer side of the cylinder body from left to right and detachedly and fixedly connected; and the normal pressure hob-changing device and a bottom flange of the cylinder are connected through bolts, the bolts are connected with a signal conditioning module through wires, the signal conditioning module is connected with a PLC, and the PLC is connected with a monitoring computer.

Description

technical field [0001] The invention relates to the technical field of equipment monitoring in the shield tunneling machine industry, in particular to a device and method for real-time monitoring of force on a cutter head hob under normal pressure. Background technique [0002] Atmospheric pressure tool changer cutterhead can realize atmospheric pressure tool changer in shield tunneling construction in high water pressure stratum. The characteristics of safe and efficient tool change make the application of atmospheric pressure tool changer cutterhead more and more widely. Dozens of hobs are arranged on the cutter head of the atmospheric pressure tool changer. Due to the inability to obtain sufficient geological information of the construction strata during shield tunneling, the tunneling parameters of the shield machine cannot be adjusted in time, resulting in excessive load and severe vibration of the hobs. Excessive hob load will cause damage to its structural parts. The ...

AI Technical Summary

Problems solved by technology

Dozens of hobs are arranged on the cutter head of the atmospheric pressure tool changer. Due to the inability to obtain sufficient geological information of the construction strata during the shield tunneling construction, the tunneling parameters of the shield machine cannot be adjusted in time, resulting in excessive load and severe vibration of the hobs.

Excessive load on the hob will cause damage to its structural parts. The severe vibration of the hob will loosen the hob connection, accelerate the fatigue of the parts, and cause the hob lubricating oil to leak

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