Tool pan back-loading type device for changing tool of slurry-balanced shield machine under normal pressure

Abstract

The invention relates to a tool pan back-loading type device for changing a tool of a slurry-balanced shield machine under normal pressure, which is applied to the technical field of shield machine engineering machinery. The tool pan back-loading type device for changing the tool of the slurry-balanced shield machine under normal pressure comprises a tool bit, a first seal ring, a tool post, a tool bit fixing sleeve, a tool bit fixing bolt, a tool bar, a cylindrical gate, a grease injection valve, a flushing valve, a third seal ring, a fourth seal ring, a bearing, a large end cover, an oil cylinder and the like; when the tool is in the working state, the tool bit is fixed on the tool bar through the tool bit fixing sleeve and the tool bit fixing bolt; the first seal ring is mounted at thefront end of the tool bar, and the tool bar is matched with the front end of the tool post and is sealed through the first seal ring; the tool bar is fixed on the tool post by the rear end of the tool bar and the tool post through a first fixing screw; the cylindrical gate is fixed on the tool post through the bearing and the large end cover; the grease injection valve and the flushing valve are installed on the tool post; and a serial number is arranged between the cylindrical gate and the tool post. The tool pan back-loading type device for changing the tool of the slurry-balanced shield machine under normal pressure has the advantages of simple structure, reliable working, and capability of conveniently and quickly changing a worn tool under normal pressure (atmospheric pressure) in the shield construction process.

Description

technical field [0001] The invention belongs to the technical field of shield tunneling machine engineering machinery, and is mainly aimed at the structure of a back-mounted atmospheric pressure tool changing device for a mud-water balance shield machine cutter head and the application of tool replacement. Background technique [0002] At present, the mud-water balance shield machine mainly relies on the knives installed on the cutter head to excavate the clay, sand and rocks on the excavation surface. During the shield construction process, the knives are easy to wear and need to be replaced frequently. Usually, during the construction process, tool replacement needs to enter the excavation chamber with a pressure much higher than the atmospheric pressure through the man gate for tool change under pressure. Entering the warehouse under pressure to replace the tool is extremely risky to the operator and is also very harmful to the health of the operator. In addition, the ope...

AI Technical Summary

Problems solved by technology

Usually, during the construction process, tool replacement needs to enter the excavation chamber with a pressure much higher than the atmospheric pressure through the man gate for tool change under pressure. Entering the warehouse under pressure to replace the tool is extremely risky to the operator and is also very harmful to the health of the operator. In addition, the operator can only work for a short time in the excavation chamber, and it takes a long time to replace the tools. Another way is to dig a shaft for tool replacement, but this method is expensive, takes a long time, and is limited by the formation, such as muddy water When the shield machine is operating under the river, it is impossible to drill shafts

Images