Automatic lubrication apparatus

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 torque is transferred to produce continuous, synchronous rotation of the cam in a single direction,
• wherein the hydromotor comprises a hydraulic-fluid inlet, a first gearwheel fixed on a first hydromotor shaft, a second gearwheel fixed to a second hydromotor shaft, the second gearwheel being in mesh with the first gearwheel, and a hydraulic-fluid outlet, wherein the cam comprises a shaft with a cam-side gearwheel which in turn is operatively connected to the second hydromotor shaft of the hydromotor by a driven shaft, such that when hydraulic fluid from the construction machine flows through the hydraulic-fluid inlet, the hydraulic fluid drives the first hydromotor shaft by way of the first gearwheel, rotates the second gearwheel so as to drive the second hydromotor shaft which in turn transmits torque to the cam through the driven shaft and the cam-side gearwheel,
• wherein the hydromotor comprises a hydromotor body and the lubricant pump comprises a pump body, and further wherein the puny body and the hydromotor body are both block-shaped bodies that are separate units and are fixed together in side-by-side fashion.