| 摘要 |
The invention relates to the field of vibration engineering, in particular to a controlled exciter, which according to the invention comprises a housing, in which on bearings a drive shaft is mounted with stationary and movable unbalances located thereon, on the shaft two oppositely directed grooves are diametrically opposite made having a length equal to half of a screw pitch and semicircle shape in the normal cross section, and a mechanism for adjusting position of the movable unbalance made in the form of dowels placed in the grooves and connected to the movable unbalance, to the movable unbalance by means of a crown a running cup with a flange is secured so that the movable unbalance and running cup turn relative to each other and the central axis of drive shaft, the running cup is equipped with a thread on the inner cylindrical surface and a keyway on the outer cylindrical surface, into the inner thread of the running cup a driving cup is screwed with external thread, on the rim of driving cup through holes are made diametrically opposite, through which and a groove made at the end of the cylindrical surface of drive shaft two pins pass that limit movement of the driving cup along the drive shaft axis, into the end of the drive shaft from the side of drive shaft a rod is mounted, which by a key is rigidly connected to the driving cup, and using a coupling – to a shaft of servomotor, the servomotor is attached to a flange and the flange – to the housing of controlled vibration exciter, also to the flange coaxially with the drive shaft by means of a collar a guide cup is secured, in the inner cylindrical surface of which a groove is made for a key, into the internal cavity of the guide cup a running cup is mounted, wherein the keyway on the outer cylindrical surface of the running cup is located opposite the keyway on the inner cylindrical surface of the guide cup and into the grooves a guide key is built-in, whose motion along the axis of the drive shaft is limited by a stop screw, which is screwed into the rim of guide cup. |
