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Control method and control device of rotary drilling rig and rotary drilling rig

A technology for rotary drilling rigs and control schemes, applied in the fields of automatic control systems for drilling, rotary drilling rigs, drilling equipment and methods, etc., which can solve the problems of increasing the working adaptability of rotary drilling rigs and the inability to adjust the pressurization pressure, etc.

Active Publication Date: 2016-03-02
SHANGHAI ZOOMLION HEAVY IND PILING MACHINERYCO +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a control method and control device for a rotary drilling rig and the rotary drilling rig, so as to realize that the rotary drilling rig can adjust the pressurized pressure according to the change of different formations, increase the working adaptability of the rotary drilling rig, and solve the current problems. There is a problem that the pressurization pressure cannot be adjusted according to the conditions of the construction strata in the technology

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  • Control method and control device of rotary drilling rig and rotary drilling rig
  • Control method and control device of rotary drilling rig and rotary drilling rig
  • Control method and control device of rotary drilling rig and rotary drilling rig

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Embodiment Construction

[0023] It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0024] The embodiment of the present invention provides a rotary drilling rig, figure 1 is a schematic diagram of a rotary drilling rig according to an embodiment of the present invention, such as figure 1 As shown, the rotary drilling rig of this embodiment includes: a drill pipe assembly 19 , a pressurized oil cylinder 12 , a power head 13 , a balance valve 11 , and a controller 10 , wherein the pressurized oil cylinder 12 is used to pass the power head 13 to the drill pipe. The assembly 19 applies the drilling pressure; the balance valve 11 is respectively connected with the rod chamber and the rodless chamber of the pressurizing oil cylinder 12, and is used to adju...

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Abstract

The invention provides a control method and a control device of a rotary drilling rig, and a rotary drilling rig. The rotary drilling rig provided by the invention includes a drill rod assembly, a pressurizing oil cylinder, a power head, a balance valve and a controller, wherein the pressurizing oil cylinder is used for exerting drilling force on the drill rod assembly through the power head; the balance valve is connected with a rod chamber and a rodless chamber of the pressurizing oil cylinder respectively, and controls the hydraulic flow of the rod chamber and the rodless chamber to generate back pressure; and the controller is used for acquiring the position information of the drill rod assembly relative to the ground, and sends a control command for controlling the on / off of the balance valve as per the pre-arranged mapping of the drill rod assembly and the on / off of the balance valve. According to the invention, the on / off of the balance valve is controlled as per the position of the drill rod assembly, so as to control the necessity of back pressure exertion, as a result, when the power head reaches the assigned position, the pressurized pressure of the oil cylinder can be changed in accordance with different stratum conditions.

Description

technical field [0001] The invention relates to the field of construction machinery, in particular to a control method and a control device of a rotary drilling rig and a rotary drilling rig. Background technique [0002] Rotary drilling rig is a kind of construction machine used for hole forming in construction foundation engineering. It is a rotary bucket type rotary drilling machine supported by a crawler, and its working device is composed of a power head, a drill pipe assembly, a hydraulic system, and a mast. [0003] The mast is the supporting part of the drill pipe assembly, and it is subjected to torque, vibration, etc. during operation. The pressurized oil cylinder in the hydraulic system is mainly used to control the movement of the power head, and transmit the pressurized force to the drill pipe of the drill pipe assembly through the power head. The pressurized cylinder is fixed to the mast. The piston rod of the pressurized oil cylinder is set downward, and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B3/02E21B44/00
Inventor 何杰黄伟民赵贤利
Owner SHANGHAI ZOOMLION HEAVY IND PILING MACHINERYCO
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