Double-pump hydraulic control loop of key drilling action of cutting drill rig

A control circuit and a key technology, applied in the automatic control system of drilling, the driving device for drilling in the wellbore, mechanical equipment, etc., can solve the problems of pipe sticking and slow movement speed, so as to improve the speed of propulsion and prevent pipe sticking , the effect of improving work efficiency

Active Publication Date: 2012-10-24
SUNWARD INTELLIGENT EQUIP CO LTD
View PDF9 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The propulsion speed is slow under working conditions such as hole-forming rod lifting, connecting rod empty lifting, and unloading rod empty pushing, or the rotation of the power head is stopped, and the flow of the main control valve rotary joint is merged into the main propulsion oil circuit to increase the speed of the rod lifting, but stop Swivel, if a large piece of gravel slides into the hole, it will cause a sudden sticking of the drill

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Double-pump hydraulic control loop of key drilling action of cutting drill rig
  • Double-pump hydraulic control loop of key drilling action of cutting drill rig

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0014] A double-pump hydraulic control circuit for the key rock drilling action of a cutting drilling rig, which consists of a double-connected load-sensitive variable pump unit 1, a double-inlet load-sensitive proportional multi-way valve 2, a power head rotary motor 3, a power head propulsion motor 4, and a hydraulic oil tank The hydraulic control main oil circuit for the key rock drilling action of the cutting rig is composed of 8 etc., which is composed of a pump P1 in the double-connected load-sensitive variable pump group 1 and a rotary-connected multi-way valve 21 in the double-inlet proportional multi-way valve to rotate the power head. The load-sensitive proportional control of the motor is composed of another pump P2, the first valve 23 and the second valve 22 in the double-connected load-sensitive variable pump group 1. The ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A double-pump hydraulic control loop of a key drilling action of a cutting drill rig comprises a double linkage load-sensitive variable pump set, a double oil intake linkage load-sensitive multi-way valve, a rotary motor, a propulsion motor, a drilling logic control block, a rotation guide handle, a propulsion guide handle, and a hydraulic oil tank. An oil inlet of the double linkage load-sensitive variable pump set is connected with the hydraulic oil tank. An oil outlet and a load-sensitive opening are connected with an oil inlet and a load-sensitive opening of the double oil intake linkage load-sensitive multi-way valve respectively. Each valve pressure difference compensator of the load-sensitive multi-way valve is provided with an external control opening. The external control openings are connected with the drilling logic control block. The rotation guide handle and the propulsion guide handle are connected with the drilling logic control block or a guide control opening of the load-sensitive multi-way valve. The double-pump hydraulic control loop has the advantages that power head rotation-proportion-controlled propulsion is achieved, independent load-sensitive control of rotation and propulsion is achieved, propulsion speed is increased, and the like.

Description

Technical field [0001] The invention relates to a double-pump hydraulic control circuit for key rock drilling actions of a cutting drilling rig. Background technique [0002] The cutting drilling rig is a new type of rock drilling rig. Its operating mechanism is high-speed rotary crushing drilling. It has the outstanding advantages of high speed, high efficiency, simplicity and convenience for drilling operations in shale, sandstone and other rock formations. Comprehensive analysis of the current hydraulic systems of cutting drilling rigs of various brands , are all developed based on the simple improvement of the hydraulic system of small or medium excavators. Compared with the excavator, the cutting drilling rig subtracts the three actions of the swing arm, the breaker and the bucket, and increases the three actions of the power head propulsion, the power head rotation, and the air compressor. The breaker unit and the bucket unit realize the control of the three actions o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): E21B4/02E21B44/06F15B11/02F15B13/02
Inventor 王东升马海淮赵宏强林宏武
Owner SUNWARD INTELLIGENT EQUIP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap