Hydraulic control system of drill loader

Abstract

The invention discloses a hydraulic control system of a drill loader. The hydraulic control system comprises a primary pump, a secondary pump, a first multi-way directional valve, a second multi-way directional valve, a pilot oil control valve unit, an anti-jamming valve unit, a pilot oil source valve unit, a track tensioning valve unit, a third multi-way directional valve, a first hydraulic pilot control valve unit, a second hydraulic pilot control valve unit, a first hydraulic pilot control valve device, a second hydraulic pilot control valve device, a third hydraulic pilot control valve device, a hand-operated directional valve, a first balance valve and a boom cylinder. The hydraulic control system of the drill loader disclosed by the invention has the advantages that as a multi-stage propulsion manner and impact pressures are set, the drill loader can adapt to different geological conditions, and initiative jamming prevention is effectively realized; when the jamming is caused, the hydraulic control system disclosed by the invention can control an impactor and a propulsion cylinder to switch into light impact and light propulsion operations, blast holes are repaired, and the jamming preventing effect can be effectively improved; and the hydraulic control system of the drill loader disclosed by the invention adopts a load-sensitive technique, so that the efficiency and accuracy of the hydraulic control system of the drill loader are improved.

Description

technical field [0001] The patent of the present invention relates to the technical field of mining comprehensive tunneling equipment, in particular to a hydraulic control system of a mining drilling machine. [0002] Background technique [0003] Drilling machine is a comprehensive tunneling equipment integrating drilling, loading and conveying. It is mainly used in the tunneling of small and medium-sized hard rock roadways in coal mines in my country, and can also be used in tunneling projects in metallurgy, railways, highways, hydropower and other departments. The prospects are extremely bright. The drilling rig mainly includes a pick-up unit, a drilling rig unit, a feed hopper, a walking unit, a frame unit, a support unit, and a transportation unit. [0004] In the existing drilling machine, the control accuracy and control efficiency of the hydraulic control system are not high, the operation control is not convenient enough, and the anti-jamming function is poor, so t...

AI Technical Summary

Problems solved by technology

[0004] Existing drilling rigs have low control accuracy and control efficiency of the hydraulic control system, are not convenient to operate and control, and have poor anti-jamming functions, so there are many defects

[0005] For example, the existing single-arm drilling machine mainly adopts the full hydraulic rock drilling method, and mainly adopts the method of pushing the oil cylinder back when the drill is jammed to prevent the jamming. It is difficult to prevent and deal with complex jamming conditions.

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