CN103032020B - Hydraulic feeding system of full-automatic top drive drilling machine - Google Patents
Hydraulic feeding system of full-automatic top drive drilling machine Download PDFInfo
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- CN103032020B CN103032020B CN201210554722.2A CN201210554722A CN103032020B CN 103032020 B CN103032020 B CN 103032020B CN 201210554722 A CN201210554722 A CN 201210554722A CN 103032020 B CN103032020 B CN 103032020B
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Abstract
The invention discloses a hydraulic feeding system of a full-automatic top drive drilling machine. According to the hydraulic feeding system disclosed by the invention, a load-sensitive pump substitutes for a metering pump, a hydraulic control proportional directional valve substitutes for a common reversing valve, an overflow valve on an LS (Load-Sensitive) oil path rather than an overflow valve on a main oil path is used for adjusting the down pressure, an explosionproof valve is additionally arranged between a multipath valve and a lifting oil cylinder, and a duplex multipath valve substitutes for a hexad multipath valve. Compared with the prior art, the hydraulic feeding system of the full-automatic top drive drilling machine has the advantages of improving the working efficiency, reducing energy consumption, oil temperature and volume of the multipath valve, well preventing the safety accidents caused by fracture of an oil pipeline and rapid drop of the lifting oil cylinder, reducing the volumes of the valve bodies, simplifying a connection pipeline, saving the maintenance time and improving the working efficiency, the stability and the safety of the system.
Description
Technical field
The present invention relates to a kind of rig feeding hydraulic system, specifically a kind of all-hydraulic top drive drilling feeding hydraulic system.
Background technology
All-hydraulic top drive drilling feeding hydraulic system of the prior art (as shown in Figure 1), in this system, variable pump provides power source for fast feed, and constant displacement pump provides power source for feeding at a slow speed; Control banked direction control valves (6) by control crank and reach the speed that regulates fast feed, control speed and the downforce of feeding at a slow speed by overflow valve.Feeding is combined to realize by constant displacement pump, overflow valve and hand-operated direction valve at a slow speed, not only efficiency is low, energy consumption is large, oil temperature is high for this feeding hydraulic system, banked direction control valves volume is large, and in the time of fast feed, the T mouth of the speed governing overflow valve in feeding loop need bear high pressure at a slow speed, needs to adopt special overflow valve.In addition, in the time of pipeline rupture between rig elevating ram and banked direction control valves, oil cylinder is stop motion at once, can fall rapidly, causes fatal crass's accident, and this has had a strong impact on operating efficiency, stability and the safety of rig.
Summary of the invention
The problem existing for above-mentioned prior art, the invention provides a kind of all-hydraulic top drive drilling feeding hydraulic system, solve the problem that efficiency is low, energy consumption is large, oil temperature is high and overflow valve T bears high pressure when fast feed, prevent breaking due to oil pipe, the security incident of holding oil cylinder to decline rapidly and to bring, reduce valve volume, simplify connecting line, save maintenance time.
To achieve these goals, the present invention includes fuel tank, pilot control handle I, pilot control handle II, oil cylinder, overflow valve I, overflow valve II, reversal valve, one way valve I, hydraulic control one-way valve and one way valve II; Also comprise load sensitive pump I, load sensitive pump II, banked direction control valves, hydraulic control proportional reversing valve and explosion-proof valve, banked direction control valves is bigeminy banked direction control valves.
Fuel tank is connected with the S mouth of load sensitive pump I and load sensitive pump II respectively, the P mouth of load sensitive pump I is connected with the P mouth of hydraulic control proportional reversing valve, the A mouth of hydraulic control proportional reversing valve is by one way valve I, one tunnel is connected with the A mouth of banked direction control valves, the overflow valve I of separately leading up to is connected with fuel tank with reversal valve, the B mouth of hydraulic control proportional reversing valve is connected with the B mouth of banked direction control valves by hydraulic control one-way valve, the T mouth of hydraulic control proportional reversing valve is directly connected with fuel tank, the a of hydraulic control proportional reversing valve, b mouth respectively with a of pilot control handle II, b mouth connects, and a mouth of hydraulic control proportional reversing valve connects with the control mouth of reversal valve, b mouth connects with the Dr mouth of explosion-proof valve,
The A mouth of load sensitive pump II is connected with the P mouth of banked direction control valves, the A mouth of banked direction control valves is connected with the A mouth of explosion-proof valve, the B mouth of banked direction control valves is connected with the rod chamber of oil cylinder, the T mouth of banked direction control valves is connected with fuel tank, a, the b mouth of banked direction control valves are connected with a, the b mouth of pilot control handle I respectively, and a mouth of banked direction control valves connects with the control mouth of reversal valve, b mouth connects with the Dr mouth of explosion-proof valve, and A, the B mouth of banked direction control valves interconnect with A, the B mouth of hydraulic control proportional reversing valve respectively;
Explosion-proof valve is installed on the outer wall of oil cylinder, and the A mouth of explosion-proof valve is connected by an one way valve II with T mouth, and the C mouth of explosion-proof valve is connected with the rodless cavity of oil cylinder.
Compared with prior art, the invention has the beneficial effects as follows:
1. in feeding at a slow speed, replace constant displacement pump by load sensitive pump, hydraulic control proportional reversing valve replaces common reversal valve, replace the overflow valve on working connection to regulate downforce by the relief valve pressure regulating on LS feedback oil circuit, can well solve that efficiency is low, energy consumption is large, oil temperature is high and when fast feed, in feeding loop, overflow valve T mouthpiece is subject to the problem of high pressure at a slow speed.
2. between banked direction control valves and elevating ram, add explosion-proof valve, can prevent due to pipeline rupture between the two time, elevating ram declines rapidly and the fatal crass's that brings security incident.
3. replace six banked direction control valves by bigeminy banked direction control valves, not only the volume of valve own is little, and also simplification accordingly of connecting line, has saved the maintenance and repair time.
In sum, this all-hydraulic top drive drilling feeding hydraulic system has not only improved the operating efficiency of hydraulic system, has reduced energy consumption and oil temperature, also reduces valve volume simultaneously, simplifies connecting line, saves maintenance time.In addition, when this feeding hydraulic system can well prevent due to pipeline rupture between banked direction control valves and elevating ram, elevating ram declines rapidly and the security incident brought, thus the operating efficiency, stability and the safety that have improved rig.
Brief description of the drawings
Fig. 1 is all-hydraulic top drive drilling feeding hydraulic system schematic diagram in prior art;
Fig. 2 is all-hydraulic top drive drilling feeding hydraulic system schematic diagram of the present invention.
In figure: 1, load sensitive pump I, 2, load sensitive pump II, 3, banked direction control valves, 4, hydraulic control proportional reversing valve, 5, fuel tank, 6, pilot control handle I, 7, pilot control handle II, 8, explosion-proof valve, 9, oil cylinder, 10, overflow valve I, 11, reversal valve, 12, one way valve I, 13, hydraulic control one-way valve, 14, one way valve II, 15, overflow valve II, 16, constant displacement pump.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 2, the all-hydraulic top drive drilling feeding of the present invention hydraulic system is in when work, and drill-in fluid pressing system is divided into two oil circuits, and an oil circuit provides power during to rig fast feed, and oil circuit provides at a slow speed power when feeding to rig.
In the time of fast feeding at a slow speed, replace constant displacement pump by load sensitive pump, fuel tank 5 is connected with the S mouth of load sensitive pump I 1, the P mouth of load sensitive pump I 1 is connected with the P mouth of hydraulic control proportional reversing valve 4, the A mouth of hydraulic control proportional reversing valve 4 is by one way valve I 12, the A mouth of one tunnel and banked direction control valves 3 is connected, this banked direction control valves 3 is six banked direction control valves of the prior art for bigeminy banked direction control valves has replaced, the A mouth of hydraulic control proportional reversing valve 4 is communicated with fuel tank 5 by separately lead up to reversal valve 11 and the overflow valve 10 of one way valve I 12, the B mouth of hydraulic control proportional reversing valve 4 is connected by hydraulic control one-way valve 13 and the B mouth of banked direction control valves 3, the T mouth of hydraulic control proportional reversing valve 4 directly and fuel tank 5 connect, the a of hydraulic control proportional reversing valve 4, b mouth respectively with a of pilot control handle II 7, b mouth is communicated with, and a mouth of hydraulic control proportional reversing valve 4 is connected with the control mouth of reversal valve 11, b mouth is communicated with the Dr mouth of explosion-proof valve 8.When feeding, the speed of feeding is controlled the openings of sizes of hydraulic control proportional reversing valve 4 by pilot handle II 7 at a slow speed, and explosion-proof valve 8 openings of sizes realize, and the pressure of feeding regulates by overflow valve II 15.
In the time of fast feed, fuel tank 5 is connected with the S mouth of load sensitive pump II 2, the A mouth of load sensitive pump II 2 is connected with the P mouth of banked direction control valves 3, the A mouth of banked direction control valves 3 is connected with the A mouth of explosion-proof valve 8, the B mouth of banked direction control valves 3 is communicated with the rod chamber of oil cylinder 9, T mouth and the fuel tank 5 of banked direction control valves 3 are connected, a, the b mouth of banked direction control valves 3 are connected with a, the b mouth of pilot control handle I 6 respectively, and a mouth of banked direction control valves 3 is connected with the control mouth of reversal valve 11, b mouth is communicated with the Dr mouth of explosion-proof valve 8, and A, the B mouth of banked direction control valves 3 are interconnected with A, the B mouth of hydraulic control proportional reversing valve 4 respectively.When fast feed, openings of sizes and explosion-proof valve 8 openings of sizes that the speed of feeding is controlled banked direction control valves 3 by pilot handle I 6 realize.
Explosion-proof valve 8 is installed on the outer wall of oil cylinder 9, and the A mouth of explosion-proof valve 8 and T mouth are connected by an one way valve II 14, and the C mouth of explosion-proof valve 8 is communicated with the rodless cavity of oil cylinder 9.
Claims (1)
1. an all-hydraulic top drive drilling feeding hydraulic system, comprises fuel tank (5), pilot control handle I (6), pilot control handle II (7), oil cylinder (9), overflow valve I (10), overflow valve II (15), reversal valve (11), one way valve I (12), hydraulic control one-way valve (13) and one way valve II (14); It is characterized in that, also comprise load sensitive pump I (1), load sensitive pump II (2), banked direction control valves (3), hydraulic control proportional reversing valve (4) and explosion-proof valve (8), banked direction control valves (3) is bigeminy banked direction control valves;
Fuel tank (5) is connected with the S mouth of load sensitive pump I (1) and load sensitive pump II (2) respectively, the P mouth of load sensitive pump I (1) is connected with the P mouth of hydraulic control proportional reversing valve (4), the A mouth of hydraulic control proportional reversing valve (4) is by one way valve I (12), one tunnel is connected with the A mouth of banked direction control valves (3), the overflow valve I (10) of separately leading up to is connected with fuel tank (5) with reversal valve (11), the B mouth of hydraulic control proportional reversing valve (4) is connected with the B mouth of banked direction control valves (3) by hydraulic control one-way valve (13), the T mouth of hydraulic control proportional reversing valve (4) is directly connected with fuel tank (5), the a of hydraulic control proportional reversing valve (4), b mouth respectively with a of pilot control handle II (7), b mouth connects, and the control mouth of the same reversal valve of a mouth (11) of hydraulic control proportional reversing valve (4) connects, the Dr mouth of the same explosion-proof valve of b mouth (8) connects,
The A mouth of load sensitive pump II (2) is connected with the P mouth of banked direction control valves (3), the A mouth of banked direction control valves (3) is connected with the A mouth of explosion-proof valve (8), the B mouth of banked direction control valves (3) is connected with the rod chamber of oil cylinder (9), the T mouth of banked direction control valves (3) is connected with fuel tank (5), the a of banked direction control valves (3), b mouth respectively with a of pilot control handle I (6), b mouth connects, and the control mouth of the same reversal valve of a mouth (11) of banked direction control valves (3) connects, the Dr mouth of the same explosion-proof valve of b mouth (8) connects, the A of banked direction control valves (3), B mouth respectively with the A of hydraulic control proportional reversing valve (4), B mouth interconnects,
Explosion-proof valve (8) is installed on the outer wall of oil cylinder (9), the A mouth of explosion-proof valve (8) is connected by an one way valve II (14) with T mouth, and the C mouth of explosion-proof valve (8) is connected with the rodless cavity of oil cylinder (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210554722.2A CN103032020B (en) | 2012-12-19 | 2012-12-19 | Hydraulic feeding system of full-automatic top drive drilling machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210554722.2A CN103032020B (en) | 2012-12-19 | 2012-12-19 | Hydraulic feeding system of full-automatic top drive drilling machine |
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| CN103032020A CN103032020A (en) | 2013-04-10 |
| CN103032020B true CN103032020B (en) | 2014-11-19 |
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| CN107445073B (en) * | 2017-07-18 | 2019-04-02 | 中煤科工集团西安研究院有限公司 | Truck-mounted drilling rig combined type lifting device and application method |
| CN109209334A (en) * | 2018-11-30 | 2019-01-15 | 恒天九五重工有限公司 | A method of generating failure when preventing horizontal directional drilling machine from starting |
| CN109469657B (en) * | 2018-12-26 | 2024-02-02 | 江苏徐工工程机械研究院有限公司 | Hydraulic system and drilling machine |
| CN110645220B (en) * | 2019-10-17 | 2021-06-25 | 江苏汇智高端工程机械创新中心有限公司 | Hydraulic system for work vehicle and excavator |
| CN114215799B (en) * | 2022-02-21 | 2022-05-10 | 徐州徐工环境技术有限公司 | Load-sensitive constant-power hydraulic system for vertical pressing station |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3579232B2 (en) * | 1997-11-27 | 2004-10-20 | 日立建機株式会社 | High / low speed switching circuit for earth drill |
| CN2453104Y (en) * | 2000-12-12 | 2001-10-10 | 中国石油集团地球物理勘探局 | Hydraulic apparatus of drilling machine |
| CN201176871Y (en) * | 2007-11-29 | 2009-01-07 | 中国地质装备总公司 | All-hydraulic type rock core boring machine hydraulic control system |
| CN101725589B (en) * | 2009-11-11 | 2013-07-17 | 北京市三一重机有限公司 | Hydraulic system and rotary drilling rig comprising same |
| CN202117558U (en) * | 2011-06-14 | 2012-01-18 | 南阳二机石油装备(集团)有限公司 | Closed hydraulic system of gear rack drilling machine |
| CN102606131B (en) * | 2011-12-09 | 2015-02-25 | 中国石油集团长城钻探工程有限公司 | Hydraulically-driven top drive control system |
| CN203066853U (en) * | 2012-12-19 | 2013-07-17 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Full hydraulic top drive drilling machine feed hydraulic system |
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Effective date of registration: 20230117 Address after: 221000 No.26 tuolanshan Road, Xuzhou Economic and Technological Development Zone, Xuzhou City, Jiangsu Province Patentee after: JIANGSU XUGONG ENGINEERING MACHINERY RESEARCH INSTITUTE Co.,Ltd. Address before: 221004 3 Tuo Lan Shan Road, Xuzhou Economic Development Zone, Jiangsu Patentee before: Xuzhou Construction Machinery Institute, Xuzhou Construction Machinery Group Co.,Ltd. |