Device for feeding lubricating oil to lubrication points of machine, conveyor or escalator has at least two rotary-lift-piston pumps in series in housing and drive unit

摘要

The drive device has a drive shaft (16) for common drive of the series-arranged rotary-lift-piston pumps (1,1'). In the drive path between the drive shaft and the piston pumps devices are arranged for varying the delivery time and quantity. The drive shaft is a worm shaft and the pistons (9) of the pumps have heads, which in the piston longitudinal direction are provided on one side with a control contour (12). On the other side, the piston heads are activated by a pressure spring (14). The piston heads are rotatively driven by a wheel rim (11) meshing with the worm shaft. The control contours of the piston heads (17) under the effect of the pressure spring locate on a buttress (13) adjustable on the housing exterior.