CN102839962A - Overload protective system of drilling machine - Google Patents
Overload protective system of drilling machine Download PDFInfo
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- CN102839962A CN102839962A CN2012103627260A CN201210362726A CN102839962A CN 102839962 A CN102839962 A CN 102839962A CN 2012103627260 A CN2012103627260 A CN 2012103627260A CN 201210362726 A CN201210362726 A CN 201210362726A CN 102839962 A CN102839962 A CN 102839962A
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- pressure pipeline
- motor
- overload protective
- drilling
- drilling machine
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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
The present invention relates to a kind of overload protective device of rig, especially a kind of overload protective device that is used for the rig of geological drilling or geotechnical engineering.
Background technology
At present, the rotary system of widely used all-hydraulic drill is accomplished by fluid motor-driven, and feeding system is accomplished by the hydraulic cylinder feed hydraulic oil cylinder driving, and two group systems are accomplished by two oil pump feeds respectively.When troublesome zone drilling, turning round and feed the parameter great majority is to set with operator's experience, and when unusual situation occurring, the operator does not also have timely judgement drilling accident to take place (like bit freezing or bury drills etc.), causes very big trouble to work.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the prior art, a kind of overload protective device of rig is provided, can prevent drilling accident in advance, can prevent the rig overload, have automatic protection functions again.
According to technical scheme provided by the invention; The overload protective device of said rig; Comprise rotary motor, feed oil cylinder, motor is just changeing pressure piping and drilling well circulatory system pressure pipeline, rotary motor and motor are just changeing pressure piping and are linking, and feed oil cylinder and the feed pressure pipeline links; Characteristic is: series connection pilot sequencing valve and external control reversal valve on said feed pressure pipeline, and the control mouth of pilot sequencing valve and motor are just changeing pressure piping and are linking, and the control mouth of external control reversal valve and drilling well circulatory system pressure pipeline link.
The overload protective device of rig of the present invention property simple and reliable for structure, rig drilling accident in the course of the work can prevent the rig overload in advance, has automatic protection functions again.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
Below in conjunction with concrete accompanying drawing the present invention is described further.
As shown in Figure 1: the overload protective device of rig comprises that motor is just changeing pressure piping 1, pilot sequencing valve 2-1, external control reversal valve 2-2, feed pressure pipeline 3, drilling well circulatory system pressure pipeline 4, feeding oil cylinder 5, rotary motor 6 etc.
The present invention includes rotary motor 6, feed oil cylinder 5, motor and just changeing pressure piping 1 and drilling well circulatory system pressure pipeline 4; Rotary motor 6 is just changeing pressure piping 1 with motor and is linking; Feeding oil cylinder 5 links with feed pressure pipeline 3; Series connection pilot sequencing valve 2-1 and external control reversal valve 2-2 on feed pressure pipeline 3, the control mouth of said pilot sequencing valve 2-1 and motor are just changeing pressure piping 1 and are linking, and the control mouth of external control reversal valve 2-2 and drilling well circulatory system pressure pipeline 4 link.
The present invention's pilot sequencing valve 2-1 and external control reversal valve 2-2 has connected on feed pressure pipeline 3; Control signal is taken from motor is respectively just changeing pressure affair pipeline 1 and drilling well circulatory system pressure pipeline 4; The opening pressure of pilot sequencing valve 2-1 and external control reversal valve 2-2 is set at the maximum pressure of system separately; When the load pressure in arbitrary system reached maximum pressure, pilot sequencing valve 2-1 or external control reversal valve 2-2 opened switching-over rapidly, give the oil-feed cylinder 5 reverse operations; Make drilling tool stratum out of danger, prevent that drilling accident from taking place.
Fortuitous event in the hole, occurs, rotary torque or drilling well circulatory system pressure sharply increase, reach setting value after, overload protective device starts, and makes the drilling tool counter motion hightail dangerous stratum, prevents that drilling accident from taking place.
Claims (1)
1. the overload protective device of a rig; Comprise rotary motor (6), feed oil cylinder (5), motor is just changeing pressure piping (1) and drilling well circulatory system pressure pipeline (4); Rotary motor (6) is just changeing pressure piping (1) with motor and is linking, and feeds oil cylinder (5) and links with feed pressure pipeline (3); It is characterized in that: go up series connection pilot sequencing valve (2-1) and external control reversal valve (2-2) at said feed pressure pipeline (3); The control mouth of pilot sequencing valve (2-1) and motor are just changeing pressure piping (1) and are linking, and the control mouth of external control reversal valve (2-2) and drilling well circulatory system pressure pipeline (4) link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210362726.0A CN102839962B (en) | 2012-09-25 | 2012-09-25 | Overload protective system of drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210362726.0A CN102839962B (en) | 2012-09-25 | 2012-09-25 | Overload protective system of drilling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102839962A true CN102839962A (en) | 2012-12-26 |
| CN102839962B CN102839962B (en) | 2015-02-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210362726.0A Active CN102839962B (en) | 2012-09-25 | 2012-09-25 | Overload protective system of drilling machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN102839962B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653724A (en) * | 2018-12-25 | 2019-04-19 | 中国铁建重工集团有限公司 | The control system of airborne anchor rod drilling machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2240608Y (en) * | 1995-12-14 | 1996-11-20 | 韩秀莲 | Omnibearing hydraulic anchoring-bolt drill |
| RU2235199C1 (en) * | 2002-12-16 | 2004-08-27 | Сидоров Игорь Александрович | Method and device for control of rock boring machine feed |
| CN201763715U (en) * | 2010-09-16 | 2011-03-16 | 泸州众大科技液压件有限公司 | Pile-up valve of gallery drilling machine |
| CN202832473U (en) * | 2012-09-25 | 2013-03-27 | 无锡金帆钻凿设备股份有限公司 | Overload protective system of drilling machine |
-
2012
- 2012-09-25 CN CN201210362726.0A patent/CN102839962B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2240608Y (en) * | 1995-12-14 | 1996-11-20 | 韩秀莲 | Omnibearing hydraulic anchoring-bolt drill |
| RU2235199C1 (en) * | 2002-12-16 | 2004-08-27 | Сидоров Игорь Александрович | Method and device for control of rock boring machine feed |
| CN201763715U (en) * | 2010-09-16 | 2011-03-16 | 泸州众大科技液压件有限公司 | Pile-up valve of gallery drilling machine |
| CN202832473U (en) * | 2012-09-25 | 2013-03-27 | 无锡金帆钻凿设备股份有限公司 | Overload protective system of drilling machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653724A (en) * | 2018-12-25 | 2019-04-19 | 中国铁建重工集团有限公司 | The control system of airborne anchor rod drilling machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102839962B (en) | 2015-02-11 |
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