An automatic control system for rock drilling efficiency of electric proportional control rock drill
An automatic control system and electric proportional technology, applied in the drilling automatic control system, fluid pressure actuation system components, mechanical equipment, etc., can solve the problems of poor matching characteristics of the percussion drilling system, low control efficiency and control precision, and achieve Realize the effects of stepless automatic matching, continuous automatic control, high control efficiency and control precision
Active Publication Date: 2018-01-09
XIANGTAN UNIV
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Problems solved by technology
[0004] In order to solve the technical problems of poor matching characteristics between the impact system and the impact drilling system in the existing automatic control system for rock drilling efficiency of hydraulic rock drills, and the technical problems of low control efficiency and control precision, the present invention provides a proportional control type electric system for real-time adjustment of system pressure. Proportional Control Rock Drill Impact Pressure Automatic Control System
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[0008] Such as figure 1 As shown, the present invention includes a rotary system, a propulsion system, and an impact system. The oil inlet of the hydraulic pump 1 in the rotary system is connected to the oil tank; the oil outlet of the hydraulic pump 1 is respectively connected to the check valve 3 and the overflow valve 2, and the overflow The oil outlet of the valve 2 is connected to the oil tank; the other end of the check valve 3 is respectively connected to the pressure reducing valve 5 and the hydraulic motor 4, and the other end of the hydraulic motor 4 is connected to the oil tank; the hydraulic motor 4 transmits the speed signal to the ECU electronic control through the speed sensor unit; the other end of the ECU electronic control unit is electrically connected to the electric proportional pressure valve 6 and 7 respectively; Connect to the left and right ports of the remote liquid control end of the valve 14 respectively. The oil inlet of the hydraulic pump 8 in th...
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The invention discloses an electric proportional control type rock drill rock drilling efficiency automatic control system which comprises electronic control units (ECU), hydraulic pumps, one-way valves, a hydraulic motor, a reducing valve, a reversing valve, electric proportional pressure valves, overflow valves, a pressure-compensated valve, a rotating speed sensor and pressure sensors. The electronic control units (ECU) are electrically connected with the rotating speed sensor, the pressure sensors and the electric proportional pressure valves. The hydraulic pump in a propelling system and an impacting system is connected with an impacting mechanism through the pressure-compensated valve. The hydraulic pump in a rotary system is connected with the hydraulic motor through the corresponding one-way valve, and the hydraulic motor is connected with the corresponding electric proportional pressure valves through the reducing valve. According to the system, by means of electro-hydraulic signal transformation, the hydraulic system pressure is continuously and automatically controlled; and coordinated matching of the impacting pressure, the propelling pressure and the rotating speed can be achieved, and the rock drilling efficiency can be greatly improved.
Description
technical field [0001] The invention relates to a rock drilling control system for a rock drill, in particular to an electric proportional control type rock drilling efficiency automatic control system for the rock drill. Background technique [0002] The hydraulic rock drilling jumbo is a special equipment used for rock drilling and excavation. Hydraulic rock drilling rigs play an irreplaceable role in large-face rock excavation projects such as tunnels and underground projects. The hydraulic rock drilling system is the core part of the hydraulic rock drilling jumbo. When working, the hydraulic motor drives the drill rod to rotate, and the hydraulic system pushes the hydraulic cylinder to push the drill rod forward to ensure effective contact between the drill tool and the rock. The drill rod is impacted by the impact piston. Then the drill rod transmits the energy to the rock to achieve the purpose of breaking the rock. In the process of rock drilling and crushing, from ...
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IPC IPC(8): F15B11/17F15B21/08E21B44/00
CPCE21B44/005F15B11/17F15B21/08
Inventor 刘金刚熊简李晓星易达云廖金军
Owner XIANGTAN UNIV