Full hydraulic driving drilling machine hydraulic load-sensitive system

Abstract

The invention relates to the technical field of surface mine machinery, in particular to a full hydraulic driving drilling machine hydraulic load-sensitive system. The speed of the actuating elementsof the sensing system can realize stepless regulation, and double speed switching can be carried out on the travelling speed to meet various working demands of a drilling machine. The full hydraulic driving drilling machine hydraulic load-sensitive system comprises a hydraulic oil tank, a load-sensitive pump, a load-sensitive valve, a travelling double-speed switching electromagnetic valve, a lefttravelling motor and a right travelling motor; the inlet of the load-sensitive pump is connected with the hydraulic oil tank; the outlet of the load-sensitive pump is connected with the inlet of theload-sensitive valve; the first-path outlet of the load-sensitive valve is connected with the left travelling motor; the second-path outlet of the load-sensitive valve is connected with the right travelling motor; the left travelling motor and the right travelling motor are used for driving the drilling machine to travel; and the travelling double-speed switching electromagnetic valve is connectedwith the displacement control port of the left travelling motor and the displacement control port of the right travelling motor.

Description

technical field [0001] The invention relates to the technical field of open-pit mining machinery, in particular to a hydraulic load-sensing system for a full-hydraulic driving drilling rig. Background technique [0002] The fully hydraulic driven drilling rig plays an important role in the open-pit ore mining process. At present, the hydraulic system of the fully hydraulic driven drilling rig mostly adopts the traditional throttle speed regulation system, which is greatly affected by the load fluctuation, resulting in the running speed of the hydraulic actuator. Unstable, affecting the working performance of the drilling rig. The traditional throttling speed control system produces serious heat and wastes energy. At the same time, the oil temperature of the hydraulic system is too high, which affects the performance of the hydraulic system and the service life of the hydraulic components. The traditional throttling speed regulation system cannot adjust the speed of hydrauli...

AI Technical Summary

Problems solved by technology

[0002] Full-hydraulic drive drilling rigs play an important role in the process of open-pit ore mining. At present, most of the hydraulic systems of full-hydraulic drive drilling rigs use traditional throttling and speed regulation systems. The hydraulic system is greatly affected by load fluctuations, resulting in the operating speed of hydraulic actuators. Unstable, affecting the working performance of the drilling rig

The traditional throttling speed regulation system produces serious heat and wastes energy. At the same time, the oil temperature of the hydraulic system is too high, which affects the performance of the hydraulic system and the service life of hydraulic components.

The traditional throttling speed control system cannot adjust the speed of hydraulic actuators steplessly and quickly in real time, and cannot meet the requirements of different speeds of actuators in various working conditions of drilling rigs

Moreover, most of the current drilling rig walking systems are single-speed walking, and the walking speed is low when the drilling rig is in a long-distance transition, which increases the transition time and wastes manpower and material resources.

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