In modern drilling machines for the drive of rotary-feeding mechanisms are increasingly common volumetric hydraulic drives.
The drill feed drive consists of an electric motor, a variable displacement pump, a hydraulic line including a safety valve and a throttle regulator, a hydraulic motor and a mechanical transmission from the hydraulic motor to the drilling tool, which is also acted upon by the rotator drive.
Mathematical models of the drive of rotary feed mechanisms (RPM) of roller cone drilling machines, necessary for the selection of operational modes of control of drilling processes and design of systems of automatic regulation of its parameters, are poorly studied.
Studies of radial hydraulic turbine engines in the mine water network show that the characteristic of the network p *p(Q), reduced to the inlet of the turbine engine, is approximated closely enough by a quadratic parabola of the form ...
In practice of operation of hydraulic drive systems of mining machines a great role is played by hydraulic shocks arising at switching of its switchgear and often being the cause of failure of elements of hydraulic systems ...
