ROCK DRILLING RIG

摘要

A rock drilling rig includes a drilling unit that is provided with hydraulically operated actuators, such as an impact device, a rotation device and a feed device. The impact device and the rotation device are connected to dedicated hydraulic circuits provided with dedicated supply and discharge lines and are controlled by means of dedicated control valves being on the a carrier of the rock drilling rig. The feed device is connected to a distributed hydraulic system, wherein several actuators are connected to a common hydraulic circuit (CHC) provided with one common supply line and one common discharge line and are controlled by several distributed valves. The distributed valve of the feed device is located at the drilling unit.

主权项

1. A rock drilling rig comprising:
a movable carrier; at least one boom connected to the carrier; a drilling unit located at a free end portion of the boom, the drilling unit includes a feed beam, a rock drilling machine supported by the feed beam and a feed device for moving the drilling machine relative to the feed beam, the rock drilling machine including a hydraulically operated impact device and a hydraulically operated rotation device, which are connected to dedicated hydraulic circuits provided with dedicated supply lines and dedicated discharge lines, and which are controlled by dedicated control valves located at the carrier; and at least one distributed hydraulic system including a plurality of hydraulic devices connected to a common hydraulic circuit provided with one common supply line and one common discharge line, and several distributed valves connected to the supply line and the discharge line for operating the hydraulic devices, and wherein the feed device is hydraulically operated and connected to the distributed hydraulic system and a distributed valve of the feed device located at the drilling unit.