CN102839962B - Overload protective system of drilling machine - Google Patents
Overload protective system of drilling machine Download PDFInfo
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- CN102839962B CN102839962B CN201210362726.0A CN201210362726A CN102839962B CN 102839962 B CN102839962 B CN 102839962B CN 201210362726 A CN201210362726 A CN 201210362726A CN 102839962 B CN102839962 B CN 102839962B
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- pressure pipeline
- drilling
- overload protective
- motor
- 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 of the rig for geological drilling or geotechnical engineering.
Background technology
At present, the rotary system of widely used all-hydraulic drill is completed by fluid motor-driven, and feeding system is completed by hydraulic cylinder feed hydraulic oil cylinder driving, and two group systems are completed by two oil pump feeds respectively.When troublesome zone drilling, turning round with feeding parameter great majority is set with the experience of operator, when there is unusual situation, operator also judgement in time there is drilling accident (as bit freezing or bury drills etc.), cause very large trouble to work.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of overload protective device of rig is provided, drilling accident can be prevented in advance, can prevent rig from transshipping, again there is automatic protection functions.
According to technical scheme provided by the invention, the overload protective device of described rig, comprise rotary motor, feed oil cylinder, motor rotates forward pressure piping and drilling circulation system pressure pipeline, rotary motor and motor rotate forward pressure piping and are connected, and feed oil cylinder and feed pressure pipeline is connected; Feature is: connect on described feed pressure pipeline pilot sequencing valve and external control reversal valve, and the control mouth of pilot sequencing valve and motor rotate forward pressure piping and be connected, and control mouth and the drilling circulation system pressure pipeline of external control reversal valve are connected.
The overload protective device property simple and reliable for structure of rig of the present invention, rig drilling accident in the course of the work, can prevent rig from transshipping, have automatic protection functions again in advance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Below in conjunction with concrete accompanying drawing, the invention will be further described.
As shown in Figure 1: the overload protective device of rig comprises motor and rotates forward pressure piping 1, pilot sequencing valve 2-1, external control reversal valve 2-2, feed pressure pipeline 3, drilling circulation system pressure pipeline 4, feeds oil cylinder 5, rotary motor 6 etc.
The present invention includes rotary motor 6, feed oil cylinder 5, motor rotates forward pressure piping 1 and drilling circulation system pressure pipeline 4, rotary motor 6 and motor rotate forward pressure piping 1 and are connected, feed oil cylinder 5 to be connected with feed pressure pipeline 3, feed pressure pipeline 3 is connected pilot sequencing valve 2-1 and external control reversal valve 2-2, the control mouth of described pilot sequencing valve 2-1 and motor rotate forward pressure piping 1 and are connected, and control mouth and the drilling circulation system pressure pipeline 4 of external control reversal valve 2-2 are connected.
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 respectively and is rotated forward pressure business pipeline 1 and drilling circulation system pressure pipeline 4, the opening pressure of pilot sequencing valve 2-1 and external control reversal valve 2-2 is set as the maximum pressure of respective system, when the load pressure in arbitrary system reaches maximum pressure, pilot sequencing valve 2-1 or external control reversal valve 2-2 opens commutation rapidly, give oil-feed cylinder 5 reverse operation, make drilling tool stratum out of danger, prevent drilling accident from occurring.
When occurring fortuitous event in hole, rotary torque or drilling circulation system pressure sharply increase, and after reaching setting value, overload protective device starts, and makes drilling tool counter motion hightail dangerous stratum, prevents drilling accident from occurring.
Claims (1)
1. the overload protective device of a rig, comprise rotary motor (6), feed oil cylinder (5), motor rotates forward pressure piping (1), feed pressure pipeline (3) and drilling circulation system pressure pipeline (4), rotary motor (6) and motor rotate forward pressure piping (1) and are connected, and feed oil cylinder (5) and are connected with feed pressure pipeline (3); It is characterized in that: connect on described feed pressure pipeline (3) pilot sequencing valve (2-1) and external control reversal valve (2-2), the control mouth of pilot sequencing valve (2-1) and motor rotate forward pressure piping (1) and are connected, and control mouth and the drilling circulation system pressure pipeline (4) of external control reversal valve (2-2) are connected.
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 CN102839962A (en) | 2012-12-26 |
| CN102839962B true CN102839962B (en) | 2015-02-11 |
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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 |
|---|---|
| CN (1) | CN102839962B (en) |
Families Citing this family (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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102839962A (en) | 2012-12-26 |
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