A kind of shield machine and its tool changing device

Abstract

The invention discloses a shield machine and a tool changing device thereof. According to the received feedback signal, when the pressure of the excavation bin is consistent with the pressure of the transfer bin, the controller controls the opening of the front gate so that the tool changing assembly can pass through the front gate to be disassembled. The hob on the lower cutter head controls the front door to close after the tool changer unit carries the disassembled hob back to the transfer bin according to the disassembly signal received, and the pressure in the transfer bin and the storage bin are controlled according to the received front door closing signal. When they are consistent, the rear gate is controlled to open so that the storage tool assembly can replace the hob held by the tool change assembly; the controller controls the rear gate to close after the tool change assembly returns to the transfer bin according to the received tool change signal, and according to the received post The door closing signal controls the opening of the front gate when the pressure of the excavation chamber is consistent with the pressure of the transfer chamber so that the tool changer assembly passes through the front gate to install the replaced hob to the cutter head, and returns to the tool changer assembly according to the received installation signal. After arriving at the transfer warehouse, control the front gate to close, so that the hob can be replaced safely and efficiently.

Description

technical field [0001] The invention relates to the technical field of engineering equipment, in particular to a shield machine and a tool changing device thereof. Background technique [0002] As an important tunneling equipment, the shield machine is widely used in major engineering fields such as urban subways, highway tunnels, and water conservancy projects. [0003] The cutter head of the shield machine is usually equipped with a number of hobs for cutting rock formations. The hobs will always wear out during the excavation process, and the hobs need to be replaced in time to improve cutting efficiency. Existing shield machines mainly rely on manual tool change. However, the excavation chamber of the shield machine is extremely narrow and has the characteristics of high pressure and high humidity, which threatens the personal safety of tool change operators and poses a high safety risk; The operating intensity of the knife is high, and the tool change time is long, whi...

AI Technical Summary

Problems solved by technology

Existing shield machines mainly rely on manual tool change. However, the excavation chamber of the shield machine is extremely narrow and has the characteristics of high pressure and high humidity, which threatens the personal safety of tool change operators and poses a high safety risk; The operating intensity of the knife is high, and the tool change time is long, which affects the efficiency of the tool change

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