Control device for mast of rotary drilling rig
A technology for control devices and rotary drilling rigs, which is applied to the automatic control system of drilling, drilling equipment, earthwork drilling and production, etc. It can solve the problems of energy waste, large pump flow requirements, and large flow differences, so as to avoid energy waste. Effect
Pending Publication Date: 2018-11-23
GAOYOU HENGHUI MACHINERY
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Problems solved by technology
[0003] Most of the existing rotary drilling rig control masts use load-sensitive valves, with large flow differences, ranging from 15L / min to 150L / min, which requires a large flow of the pump, resulting in a certain degree of energy waste
Method used
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Embodiment
[0015] Such as figure 1 Shown is a mast control device for a rotary drilling rig, the main pump 1 is connected to the BYQ018 control valve 2 through the high-pressure hydraulic oil outlet pipe, the BYQ018 control valve 2 is connected to the hydraulic oil tank through the low-pressure hydraulic oil outlet pipe, and the hydraulic oil tank is connected to the main pump to form a circuit 1. The electric proportional valve of BYQ018 control valve 2 is connected to the PWM signal output by the controller and controlled by the electric control handle or touch screen display. The electromagnetic force of the electric proportional valve acts on the spool to open the high-pressure oil passage of BYQ018 control valve 2. The hydraulic oil channel is connected to the mast cylinder 3 through the cylinder oil inlet pipe, and the mast cylinder 3 is connected to the BYQ018 control valve 2 through the oil cylinder outlet pipe used to deliver low-pressure hydraulic oil, thus forming circuit 2, co...
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The invention belongs to the technical field of rotary drilling rigs, and particularly relates to a control device for a mast of a rotary drilling rig. A main pump is connected with a BYQ018 control valve through a high-pressure hydraulic oil outlet pipe, the BYQ018 control valve is connected with a hydraulic oil tank through a low-pressure hydraulic oil outlet pipe, and the hydraulic oil tank isconnected with the main pump to form a first loop; an electric proportional valve of the BYQ018 control valve is connected to and controlled by an electric control handle or a touch screen displayer through a PWM signal output by a controller, electromagnetic force of the electric proportional valve acts on a valve element to switch on a high-pressure oil channel of the BYQ018 control valve, the high-pressure oil channel is connected with a mast oil cylinder through an oil cylinder oil inlet pipe, and the mast oil cylinder is connected with the BYQ018 control valve through an oil cylinder oiloutlet pipe used for conveying low-pressure hydraulic oil to form a second loop; stretching and retracting of the mast oil cylinder are controlled to control the mast. The situation that in an original auxiliary valve, pilot oil is controlled electrically, and the pilot oil controls a high-pressure oil line is reduced, and meanwhile it is avoided that since the flow difference of a valve body is too large, energy is wasted.
Description
technical field [0001] The invention belongs to the technical field of rotary drilling rigs, in particular to a mast control device for rotary drilling rigs. Background technique [0002] The existing control method for the mast of the rotary drilling rig is: the mast is electrically controlled by the pilot oil, and then the pilot oil controls the high-pressure oil to move the oil cylinder back and forth. Specifically, the high-pressure hydraulic oil output by the main pump is sent to the auxiliary valve, and then the pilot gear The pump outputs pilot hydraulic oil to the auxiliary valve, and then the electric control handle outputs PWM signal to the electric proportional valve of the auxiliary valve through the controller. The switch formed by the electromagnetic attraction of the electric proportional valve opens the pilot hydraulic oil, and the pressure formed by the pilot hydraulic oil The high-pressure oil channel of the auxiliary valve is opened, so that the high-press...
Claims
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IPC IPC(8): E21B44/02
CPCE21B44/02
Inventor 陆长春郭继华边永强翁永健毛伟鹏
Owner GAOYOU HENGHUI MACHINERY