Sealing structure of grouting stirring barrel of shield tunneling machine

Abstract

The invention discloses a sealing structure of a grouting stirring barrel of a shield tunneling machine. The sealing structure comprises a transmission shaft, a seal mounting seat, a bearing, a coverplate, an outer bearing ring baffle plate and a plurality of oil filling passages, wherein a second perforating hole is formed in the outer bearing ring baffle plate; the outer bearing ring baffle plate is arranged on a first shaft sleeve in a sleeved mode through the second perforating hole and is arranged on the side, back away from the cover plate, of the seal mounting seat; a third sealing ring is arranged between an inner ring of the outer bearing ring baffle plate and the first shaft sleeve; and each oil filling passage comprises two first oil filling ports formed in the surfaces of thetwo opposite sides of an outer ring of the seal mounting seat and two first oil lines respectively communicating with the first oil filling ports, and the end, far away from the corresponding oil filling port, of each first oil line extends to an interface between the seal mounting seat and the cover plate. The sealing structure effectively reduces the phenomenon of slurry leakage of the groutingstirring barrel of the shield tunneling machine during working, eliminates the hidden trouble of slurry flowing into the bearing, and enables the tunnel construction to proceed smoothly.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a sealing structure of a grouting mixing barrel of a shield tunneling machine. Background technique [0002] When the grouting mixing tank of the existing shield tunneling machine is operated for a long time, the phenomenon of grout leakage usually occurs at the transmission shaft of the grouting mixing tank. When this phenomenon occurs, the slurry has usually entered the bearings of the drive shaft, which will cause damage to the bearings. Therefore, at this time, the tunnel construction needs to be stopped, the grouting mixing tank should be stopped, and the damaged bearing should be replaced. At the same time, the grout in the tank needs to be removed before it hardens. The whole process takes a long time and affects the construction progress. [0003] In order to reduce the impact of this phenomenon on construction, a plurality of grouting mixing barrels are us...

AI Technical Summary

Problems solved by technology

However, due to the limited space in the shield tunneling machine, usually most shield tunneling machines cannot arrange a spare grouting mixing tank. At this time, it is still impossible to avoid the impact of the grouting mixing tank on the construction

Images