SLEWING MECHANISM AND TUNNELING MACHINE

摘要

Disclosed are a slewing mechanism and a tunneling machine. The slewing mechanism is used for driving the rotation of a cutting unit and comprises a body (3), and a rotary table (1) and a drive mechanism used for driving the rotation of the rotary table (1) are disposed on the body (3), wherein the drive mechanism is in a fixed configuration relative to the body (3), and comprises a drive part connected to the rotary table (1) and moving rectilinearly, the drive mechanism being able to convert the rectilinear movement of the drive part moving rectilinearly into the rotary movement of the rotary table (1). The slewing mechanism provided in the embodiments of the present invention uses an oil cylinder (2) with double cylinder bodies (21) as the drive mechanism, wherein, when a piston rod (22) of the oil cylinder (2) extends forwards and retracts backwards, the rotary table (1) is driven in rotation. Since the distance between the piston rod (22) and a rotary shaft of the rotary table (1) remains unchanged, the gyroscopic moment remains stable. Moreover, since the oil cylinder (2) has a transverse arrangement, only a relatively small size is required to be able to drive the rotary table (1) in rotation, and, during operation, the oil cylinder (2) does not follow the rotation of the rotary table (1), the piston rod (22) merely moving between the two cylinder bodies (21).