CN202832473U - Overload protective system of drilling machine - Google Patents
Overload protective system of drilling machine Download PDFInfo
- Publication number
- CN202832473U CN202832473U CN2012204948847U CN201220494884U CN202832473U CN 202832473 U CN202832473 U CN 202832473U CN 2012204948847 U CN2012204948847 U CN 2012204948847U CN 201220494884 U CN201220494884 U CN 201220494884U CN 202832473 U CN202832473 U CN 202832473U
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- Prior art keywords
- pressure pipeline
- overload protective
- drilling machine
- feed
- protective system
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- Withdrawn - After Issue
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Abstract
The utility model relates to an overload protective system of a drilling machine. The overload protective system comprises a rotary motor, a feed oil cylinder, a motor forward rotating pressure pipeline and a well drilling circulatory system pressure pipeline. The rotary motor is connected with the motor forward rotating pressure pipeline, and the feed oil cylinder is connected with a feed pressure pipeline. The overload protective system is characterized in that a liquid control sequence valve and an outer control reversing valve are connected with the feed pressure pipeline in series, a control port of the liquid control sequence valve is connected with the motor forward rotating pressure pipeline, and a control port of the outer control reversing valve is connected with the well drilling circulatory system pressure pipeline. The overload protective system of the drilling machine is simple and reliable in structure, prevents hole internal accidents of the drilling machine during an operation process, can avoid overload of the drilling machine, and has an automatic protecting function.
Description
Technical field
The utility model 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 finished by fluid motor-driven, and feeding system is finished by the hydraulic cylinder feed hydraulic oil cylinder driving, and two group systems are finished by two oil pump feeds respectively.When troublesome zone drilling, turning round with feeding 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 occur (such as bit freezing or bury drills etc.), causes very large trouble to work.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of overload protective device of rig is provided, and can prevent in advance drilling accident, can prevent the rig overload, has again automatic protection functions.
The technical scheme that provides according to the utility model, the overload protective device of described rig, comprise rotary motor, feed oil cylinder, motor forward pressure piping and drilling well circulatory system pressure pipeline, rotary motor and motor forward pressure piping link, and feed oil cylinder and the feed pressure pipeline links; Feature is: at described feed pressure pipeline series connection pilot sequencing valve and external control reversal valve, the control mouth of pilot sequencing valve and motor forward pressure piping link, and the control mouth of external control reversal valve and drilling well circulatory system pressure pipeline link.
The overload protective device of rig described in the utility model property simple and reliable for structure, rig drilling accident in the course of the work can prevent the rig overload in advance, has again automatic protection functions.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with concrete accompanying drawing.
As shown in Figure 1: the overload protective device of rig comprises motor forward 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, feeds oil cylinder 5, rotary motor 6 etc.
The utility model comprises rotary motor 6, feeds oil cylinder 5, motor forward pressure piping 1 and drilling well circulatory system pressure pipeline 4, rotary motor 6 links with motor forward pressure piping 1, feeding oil cylinder 5 links with feed pressure pipeline 3, at feed pressure pipeline 3 series connection pilot sequencing valve 2-1 and external control reversal valve 2-2, the control mouth of described pilot sequencing valve 2-1 and motor forward pressure piping 1 link, and the control mouth of external control reversal valve 2-2 and drilling well circulatory system pressure pipeline 4 link.
The utility model is at feed pressure pipeline 3 connected pilot sequencing valve 2-1 and external control reversal valve 2-2, control signal is taken from respectively the motor forward and is pressed 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 as the separately maximum pressure of system, when the load pressure in arbitrary system reaches maximum pressure, pilot sequencing valve 2-1 or external control reversal valve 2-2 open rapidly commutation, give the oil-feed cylinder 5 reverse operations, make drilling tool stratum out of danger, prevent that drilling accident from occuring.
Occur fortuitous event in the hole, 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 occuring.
Claims (1)
1. the overload protective device of a rig, comprise rotary motor (6), feed oil cylinder (5), motor forward pressure piping (1) and drilling well circulatory system pressure pipeline (4), rotary motor (6) links with motor forward pressure piping (1), feeds oil cylinder (5) and links with feed pressure pipeline (3); It is characterized in that: at described feed pressure pipeline (3) series connection pilot sequencing valve (2-1) and external control reversal valve (2-2), the control mouth of pilot sequencing valve (2-1) and motor forward pressure piping (1) link, 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 |
|---|---|---|---|
| CN2012204948847U CN202832473U (en) | 2012-09-25 | 2012-09-25 | Overload protective system of drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204948847U CN202832473U (en) | 2012-09-25 | 2012-09-25 | Overload protective system of drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202832473U true CN202832473U (en) | 2013-03-27 |
Family
ID=47944205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204948847U Withdrawn - After Issue CN202832473U (en) | 2012-09-25 | 2012-09-25 | Overload protective system of drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202832473U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839962A (en) * | 2012-09-25 | 2012-12-26 | 无锡金帆钻凿设备股份有限公司 | Overload protective system of drilling machine |
| 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 |
| WO2021088391A1 (en) * | 2019-11-05 | 2021-05-14 | 徐州徐工矿业机械有限公司 | Hydraulic system and method for achieving sequential operation of engineering vehicle mechanism, and engineering vehicle |
-
2012
- 2012-09-25 CN CN2012204948847U patent/CN202832473U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839962A (en) * | 2012-09-25 | 2012-12-26 | 无锡金帆钻凿设备股份有限公司 | Overload protective system of drilling machine |
| CN102839962B (en) * | 2012-09-25 | 2015-02-11 | 无锡金帆钻凿设备股份有限公司 | Overload protective system of drilling machine |
| 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 |
| WO2021088391A1 (en) * | 2019-11-05 | 2021-05-14 | 徐州徐工矿业机械有限公司 | Hydraulic system and method for achieving sequential operation of engineering vehicle mechanism, and engineering vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130327 Effective date of abandoning: 20150211 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130327 Effective date of abandoning: 20150211 |
|
| RGAV | Abandon patent right to avoid regrant |