Multi-adaptive cutter head for shield machine

Abstract

The invention discloses a multi-adaptive cutter head for a shield machine. The cutter head is provided with four cutter seats, three cutters directly fixed with the cutter head and movable cutters. Each cutter seat comprises a central double-edge hob seat, an exchangeable cutter seat, an inner and outer ring side-mounted cutter seat and a peripheral hob seat. The cutters include a peripheral scraper, an over cutter and a fishtail cutter. A main cutting surface of the cutter head is composed of a single-edge hob inlaid in the peripheral hob seat, a cutting blade in the inner and outer ring side-mounted cutter seat and the fishtail cutter; and a full section cutting cutter assembly is composed of a double-edge hob, a single-edge hob, a cutting blade, a peripheral scraper, an over cutter and a fishtail cutter. The multi-adaptive cutter head solves the problem that cutter replacement wastes time and labor, changes the traditional mounting mode to effectively prolong the service life of the cutter because the whole cutter works under a relatively smaller force, and can properly adjust the kind and the number of the cutters according to different geological conditions to effectively improve the adaptability of the cutter head of the shield machine and increase the efficiency and the quality of the tunnel shield.

Description

technical field [0001] The invention belongs to tunneling machinery, and in particular relates to a cutter head device which can be used in shield tunneling machines and can be configured with different combinations of cutters. Background technique [0002] At present, the use of shield machines for tunnel construction in underground projects is becoming more and more widespread. As one of the key equipment of shield machines, the structure of the cutterhead device will directly affect the performance and efficiency of shield machines. The shield machines used in the construction of infrastructure such as subway tunnels, underwater tunnels and water supply and drainage tunnels in domestic and foreign cities are all special construction equipment. In particular, the type, position and opening ratio of the cutters on the cutter head of the shield machine are specially designed according to the geological conditions, such as hobs for rocky areas, and cutters for soft soils. Th...

AI Technical Summary

Problems solved by technology

Even if the shield machine cutter head is designed for a specific geology, it is often difficult to adapt to the shield machine cutter head due to the complexity of geological conditions, such as a section of rock, a section of sediment, or a mixture of rock and sediment in the construction line. , which brings many problems to normal construction, thus causing difficulties in construction

[0003] In the existing shield machine design, the hobs used for cutting rocks are all front-mounted, and it is difficult and very dangerous to replace the hobs midway

As a result, after the cutter head of the shield machine enters the ground, as long as there are no major defects, even if the geology changes, it will continue to excavate. Therefore, the adaptability of the cutter head will be reduced, and the excavation efficiency and speed of the cutter head will be affected.

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