What is the maintenance principle of small shield tunneling machines?

Maintaining stable operation and reserving excavation machinery equipment for shield machine maintenance, small shield machine manufacturers can only improve the daily maintenance of mechanical equipment. Mechanical equipment can be maintained on a weekly, monthly, quarterly, and annual basis. Shield machine maintenance can reasonably reduce common failures of mechanical equipment, improve the utilization rate, and ensure the normal excavation and entry of shield machine foundation pits. The maintenance of shield machine equipment adheres to continuous management methods, which reasonably reduces the maintenance cost of shield machines and creates good economic benefits. According to the maintenance principle of shield machines, shield machines are generally divided into manual excavation shields, extrusion shields, semi-pedal shields (local standard air pressure and overall standard air pressure), pedal shields (open excavation), pneumatic shields, mud shields, etc EPB shield, hybrid shield, and special shield are tunneling machines used for shield tunnel excavation. The tunnel construction (paving) of the "shield" (anchor support section) in TBM is different from open-cut construction. Generally speaking, shield machines can also be used in rock layers, but unlike outdoor shield machines, tunnel boring machines used for geological soft foundation treatment are called (narrow) shield machines, and tunnel boring machines used for rock tunnel construction are called (narrow) tunneling machines.
The maintenance and spare parts management of small shield tunneling machines, as well as the maintenance of small shield tunneling machine equipment, ensure the comprehensive construction of the tunnel. The tunnel will be opened by experienced staff, and from a detailed introduction to a step-by-step introduction, it has become the backbone of subway station infrastructure and has even created a sales market. Our overall goal is to explore the maintenance and management methods of shield tunneling machine equipment, to reduce the blockage rate of shield tunneling machine equipment. To ensure the smooth completion of infrastructure and make new projects more effective, shield tunneling machine maintenance needs to maintain stable operation and reserve to fully utilize the high efficiency of design plan preparation in advance, and ensure the smooth progress of foundation pit excavation. Therefore, the shield tunneling machine is wetted and maintained, and appropriate lubricants and countermeasures are applied for maintenance.
The daily inspection of hydraulic cylinders for maintenance of small shield tunneling machines includes: checking for internal leaks in the hydraulic cylinder, checking for leaks in the piston rod of the hydraulic cylinder, checking for leaks at the connection between the hydraulic cylinder barrel, checking for leaks at the connection between the hydraulic cylinder and the pipe joint, observing whether the hydraulic cylinder works normally and smoothly. Regular maintenance of hydraulic cylinders for shield tunneling machines includes: regularly replacing seals, regularly cleaning the hydraulic cylinder, and regularly tightening the fastening screws of the hydraulic cylinder.