Shield machine cutter disc drive

Shield machine cutter drive - 2019 09 - 26 ( China railway equipment set up branch research institute) Cutterhead driven by high strength bolt installation above the front shield, provide cutter torque. In this paper, the conventional 6 meters of EPB shield cutter head drive, for example a simple introduction. According to different type of drive, please refer to the random data of each machine. 1, driving torque of the transmission line are: motor reducer pinion main bearing inner ring gear cutter disc, there are spherical roller bearing on both ends of the pinion. 2, drive gear area, there are two seal system: inner sealing system and outer sealing system. They are responsible for the oil within the sealed gear box, and positions of excavation waste residue in sealing, prevent waste residue and dust into the gear oil in the box. Conventional shield, is a labyrinth seal the four lip seal. Labyrinth seal is used HBW sealing grease, grease with pneumatic grease pump directly from the trailer oil barrels after distribution of components to the greasing points; Sealed cavity between the first and the second injection is EP2 grease, grease by oil distribution ring OuDeDing distance ring constantly go out; The name of the second and the third seal between the sealing cavity injection is a gear oil, after system equipped with gear oil components and Confucius, can maintain a certain pressure and lubrication for sealing lip; Between the third and the fourth seal leak detection chamber. Because sealing oil viscosity is higher, pumping the inconvenience, we use a high compression ratio of pneumatic pump pumping HBW and EP2 grease, and by adjusting the air flow can control oil injection, can save construction cost, safe and reliable, low failure rate. Among the EP2 can also through other quantitatively injection control system control. Plus three inner seal for a labyrinth seal lip seal. Labyrinth seal is used HBW sealing grease, grease with pneumatic grease pump directly from the inside of the trailer oil barrels to greasing points; Note EP2 between the first and second sealing grease; Between the second and the third seal for test chamber. . spb shield inner seal is different from EPB shield, concrete form please refer to the random data. In addition swivel joint, screw machine driving and hinged seal domestic demand regular manual or automatic injection EP2 grease lubrication and seal. 3, driving a pinion gear on the main bearing lubrication bearings, small gears and three rows of roller bearings by splash lubrication and pressure lubrication for lubrication and cooling cycles. Specific shield main drive lubricating system, please refer to the schematic diagram of shield machine.