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Overload protective system of drilling machine

An overload protection and drilling rig technology, which is applied to the automatic control system of drilling, drilling equipment, earthwork drilling and production, etc., can solve problems such as troublesome work, and achieve the effect of simple structure and preventing overload

Active Publication Date: 2015-02-11
无锡金帆钻凿设备股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When drilling in complex formations, most of the rotation and feed parameters are set based on the experience of the operator. When an abnormal situation occurs, the operator has not judged that an accident in the hole has occurred (such as stuck or buried drill, etc.) ), causing great trouble to the work

Method used

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  • Overload protective system of drilling machine

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Embodiment Construction

[0007] The present invention will be further described below in conjunction with specific drawings.

[0008] Such as figure 1 Shown: The overload protection system of the drilling rig includes motor forward rotation pressure pipeline 1, hydraulic control sequence valve 2-1, external control reversing valve 2-2, feed pressure pipeline 3, drilling circulation system pressure pipeline 4, feed Enter oil cylinder 5, rotary motor 6 etc.

[0009] The present invention includes a rotary motor 6, a feed oil cylinder 5, a forward rotation pressure pipeline 1 of the motor, and a pressure pipeline 4 of a drilling circulation system. The pipeline 3 is connected, and the hydraulic control sequence valve 2-1 and the external control reversing valve 2-2 are connected in series on the feed pressure pipeline 3. The control port of the hydraulic control sequence valve 2-1 is connected with the forward rotation pressure pipe of the motor. The control port of the external control reversing valve...

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PUM

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Abstract

The invention relates to an overload protective system of a drilling machine. The overload protective system comprises a rotary motor, a feeding cylinder, a motor forward pressure pipeline and a drilling cycle system pressure pipeline, wherein the rotary motor is connected with the motor forward pressure pipeline, and the feeding cylinder is connected with a feeding pressure pipeline. The overload protective system is characterized in that a hydraulic sequence valve and an external control reversing valve are serially connected to the feeding pressure pipeline, a control port of the hydraulic sequence valve is connected with the motor forward pressure pipeline, and a control port of the external control reversing valve is connected with the drilling cycle system pressure pipeline. The overload protective system of the drilling machine, provided by the invention, has a simple structure and is reliable; and drilling accidents of the drilling machine in a working process are avoided, the overload of the drilling machine can be prevented, and the automatic protection function is achieved.

Description

technical field [0001] The invention relates to an overload protection system of a drilling rig, in particular to an overload protection system of a drilling rig used for geological drilling or geotechnical engineering. Background technique [0002] At present, the slewing system of the widely used fully hydraulic drilling rig is driven by a hydraulic motor, the feed system is driven by a hydraulic feed cylinder, and the two sets of systems are respectively supplied by two oil pumps. When drilling in complex formations, most of the rotation and feed parameters are set based on the experience of the operator. When an abnormal situation occurs, the operator has not judged that an accident in the hole has occurred (such as stuck or buried drill, etc.) ), causing great trouble to the work. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art, and provide an overload protection system for drilling rigs, which ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B44/00
Inventor 关彪
Owner 无锡金帆钻凿设备股份有限公司
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