DRIVE FOR BATCHING PUMP WITH CONTROLLABLE STROKE OF SLIDE Russian patent published in 1995 - IPC

FIELD: mechanical engineering. SUBSTANCE: worm transmission is mounted inside the housing. The ring of the transmission is secured to the driving shaft set in bearings. The shaft has axial bore for receiving the control shaft. The screw-nut for rotation of the eccentric, connected with the slide of the crank mechanism through the connecting rod, is kinematically connected with the mechanism for control of the stroke of the transmission. The driving shaft is provided with the additional bore for the screw. The bore are positioned eccentrically to the axis of the worm wheel. The screw is locked against axial movement. The nut is mounted for permitting axial movement and coupled with the mechanism for controlling the stroke. The eccentric of the crank mechanism is secured to the screw as a cantilever. EFFECT: enhanced reliability. 1 dwg