Patent ID: 8596418

Claim:
An automatic lubrication apparatus mounted on a hydraulic tool, and that is driven by a hydraulic-pressure medium, the lubrication apparatus being a detachable component of a construction machine, and mounted on a hydraulic hammer of an excavator, such that the lubrication apparatus transports lubricant from a lubricant reservoir through a lubricant conduit to one or more lubrication sites, the lubrication apparatus comprising: a lubricant pump that incorporates a pump element, the pump element of the lubricant pump being cyclically impacted by a radially projecting cam and being operative to supply heat-resistant hydraulic hammer lubricant comprising chisel-paste which has a component of solid materials; wherein, during operation of the lubrication apparatus, the cam is operatively connected to a hydromotor, from which a torque is transferred to produce continuous, synchronous rotation of the cam in a single direction, wherein the hydromotor comprises a rotating driven shaft which transfers the torque generated by the hydromotor to the cam, wherein the hydromotor comprises a hydromotor body and the lubricant pump comprises a pump body, and further wherein the pump body and the hydromotor body are both rectangular block-shaped bodies that are separate modular units and are fixed together in side-by-side fashion, wherein the rotating driven shaft of the hydromotor is axially connected to a gear arrangement, wherein the gear arrangement projects out of the rectangular block-shaped hydromotor body and extends into the rectangular block-shaped pump body and engages a cam-side gear wheel that transmits the torque to the cam, and wherein the gear arrangement comprises a worm-gear arrangement.