Rotary drilling rig control system and rotary drilling rig

A technology of rotary drilling rig and control system, which is applied to the automatic control system of drilling, rotary drilling rig, rotary drilling, etc. It can solve the problems of damaging the life of the power head motor and achieve the effect of prolonging the service life

Active Publication Date: 2020-02-11
SHANGHAI ZOOMLION HEAVY IND PILING MACHINERYCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Prolonged "holding the drill" will seriously damage the life of the power head motor

Method used

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  • Rotary drilling rig control system and rotary drilling rig
  • Rotary drilling rig control system and rotary drilling rig
  • Rotary drilling rig control system and rotary drilling rig

Examples

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Embodiment Construction

[0021] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] Please refer to figure 1 , The rotary drilling rig control system provided in an embodiment of the present invention includes a power head motor 11 , a main valve 13 , a main pump 15 , a pressurized cylinder 17 , an auxiliary valve 19 , an auxiliary pump 21 and an unloading valve 23 . The power head motor 11 is connected to the main pump 15 through the main valve 13, and is supplied with oil by the main pump 15 to drive the power head motor 11 to rotate. The pressurized oil cylinder 17 is connected to the auxiliary pump 21 through the auxiliary valve 19, and is supplied with oil by the auxiliary pump 21 to drive the pressurized oil cylinder 17 to expand and contrac...

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Abstract

The invention discloses a rotary drilling rig control system and a rotary drilling rig. The rotary drilling rig control system comprises a power head motor, a main valve, a main pump, a pressurizing oil cylinder, an auxiliary valve, an auxiliary pump and an unloading valve, wherein the power head motor is connected to the main pump through the main valve and is supplied with oil by the main pump to drive the power head motor to rotate, the pressurizing oil cylinder is connected to the auxiliary pump through the auxiliary valve and is supplied with oil by the auxiliary pump to drive the pressurizing oil cylinder to stretch and retract, the unloading valve is connected to the power head motor and the auxiliary valve correspondingly, and the unloading valve is opened or closed according to the load pressure of the power head motor and performs unloading when opened. According to the rotary drilling rig control system and the rotary drilling rig, when the phenomenon of "bit bouncing" occurs, the load force borne by the power head motor rises to the pressure set by the unloading valve, the unloading valve is opened, the pressure of the auxiliary valve is unloaded, the pressure applied to the power head motor is reduced, and the phenomenon of "bit bouncing" is relieved, so that automatic unloading of the pressure is realized, the phenomenon of "bit bouncing" is prevented from existing for a long time, and the service life of the power head motor is prolonged.

Description

technical field [0001] The invention relates to the technical field of foundation construction, in particular to a control system of a rotary drilling rig and the rotary drilling rig. Background technique [0002] Rotary drilling rig is a construction machine suitable for hole-forming operations in building foundation engineering. It is mainly suitable for construction in soil layers such as sandy soil, cohesive soil, and silty soil. It is widely used in the field, and generally adopts hydraulic crawler-type telescopic chassis, self-lifting and collapsible drill mast, telescopic drill pipe, with vertical automatic detection and adjustment, digital display of hole depth, etc. The whole machine control generally adopts hydraulic pilot control, load sensing , with the characteristics of easy operation and comfort. [0003] When the rotary drilling rig is drilling rocks, if the pressurized cylinder exerts too much pressure on the power head, the load torque on the drill pipe wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B44/00E21B3/02
CPCE21B44/00E21B3/02
Inventor 郭圣阳何杰
Owner SHANGHAI ZOOMLION HEAVY IND PILING MACHINERYCO
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