Hydraulic drill carriage pushed control impacting hydraulic return circuit and control method of hydraulic drill carriage pushed control impacting hydraulic return circuit

Abstract

The invention relates to a hydraulic drill carriage pushed control impacting hydraulic return circuit and a control method of the hydraulic drill carriage pushed control impacting hydraulic return circuit. A main oil circuit of the hydraulic drill carriage pushed control impacting hydraulic return circuit is composed of a load-sensitive variable pump, a load-sensitive proportion multi-tandem valve, a rock driller, a pushing motor or pushing oil cylinder, a hydraulic oil tank and the like; a strong-impacting far-control adjusting, strong-pushing far-control adjusting, weak-impacting far-control adjusting, weak-pushing far-control adjusting, impact pushing self-adaptation, pushing rock stratum self-adaptation and strong-controlling-weak weak-pushing impacting control oil circuit is composed of an impacting unified load-sensitive external control port, a pushing unified load-sensitive external control port, a pilot valve set, a far-control valve set and the like, wherein the pilot valve set comprises a first electromagnetic directional valve, a second electromagnetic directional valve, a logic control block, a first pilot operated directional valve and a second pilot operated directional valve, and the far-control valve set comprises a first overflow valve, a second overflow valve, a third overflow valve and a fourth overflow valve. According to the hydraulic drill carriage pushed control impacting hydraulic return circuit and the control method, pushed control impacting is achieved, impacted pushing is adapted to the rock changes, the drilling efficiency and the rock stratum passing performance are improved, and a drill rod is protected. Forced weak-pushing weak-impacting control can be selected, the hole drilling quality and the rock stratum passing performance are improved, and job parameters such as strong impacting, strong pushing, weak impacting, weak pushing and the like can all be remotely controlled and adjusted.

Description

technical field [0001] The invention relates to an adaptive hydraulic control technology for hydraulic drilling rig rock drilling, in particular to a hydraulic drilling rig propulsion control shock hydraulic circuit and a control method thereof. Background technique [0002] As one of the mainstream models of rock drilling equipment, hydraulic drilling rigs have outstanding advantages such as good rock formation applicability, fast drilling speed, and low fuel consumption compared with down-the-hole drilling rigs, roller cone drilling rigs, and cutting drilling rigs. Applied to blast hole drilling in hard and medium hard rock. The working conditions of rock drilling are harsh and the drilling process is complicated. The specific performance is that under the working condition of opening holes, weak push and weak impact control are required to ensure the straightness of the opening and protect the drilling tools; Sufficient propulsion, propulsion speed and strong impact cont...

AI Technical Summary

Problems solved by technology

[0003] The hydraulic control circuit of foreign hydraulic drilling rigs is characterized by comprehensive control functions and integrated electro-hydraulic pilot control, but its electro-hydraulic logic function valve block is widely used and the circuit is more complicated

Domestic users cannot master its fault detection and maintenance technology, and the maintenance cost is high

The research and development and trial production of domestic hydraulic drilling rigs mostly imitate foreign models, but the complexity of the hydraulic control circuit and the manufacturing and application matching details of the electro-hydraulic logic function valve block are not imitated in place, which restricts the operation performance and reliability of the whole machine

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