CN103527073B - Rotary drilling rig control revolution hydraulic circuit system - Google Patents
Rotary drilling rig control revolution hydraulic circuit system Download PDFInfo
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- CN103527073B CN103527073B CN201310500330.2A CN201310500330A CN103527073B CN 103527073 B CN103527073 B CN 103527073B CN 201310500330 A CN201310500330 A CN 201310500330A CN 103527073 B CN103527073 B CN 103527073B
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- 238000005553 drilling Methods 0.000 title claims abstract description 22
- 230000009471 action Effects 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 238000003825 pressing Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 7
- 230000005611 electricity Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 38
- 238000004134 energy conservation Methods 0.000 description 4
- 239000002828 fuel tank Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000006837 decompression Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Earth Drilling (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention discloses a kind of rotary drilling rig control revolution hydraulic circuit system, comprises main pump, and described main pump has master control valve by pipeline connection, and master control valve is communicated with pilot handle and rotary motor respectively by pipeline; Also revolution deceleration device is had by pipeline connection between described main pump and master control valve, the present invention adopts such scheme, rotary drilling rig attonity or revolution beyond other actions time, magnetic valve in revolution deceleration device must not electricity, the feedback oil circuit of main valve produces the shuttle valve of feedback pressure in revolution deceleration device to main pump variable mechanism. This deceleration device can the adjustable definite value reducing valve of step-less adjustment, it is not necessary to change spool, only need to assemble pipeline, pollution-free, and any minus flow system all can use this device restriction main pump flow, can meet fine setting characteristic, can limit again top speed. Connected by different pipelines, the rotary drilling rig of positive flow system also can use.
Description
Technical field
The present invention relates to a kind of rotary drilling rig control revolution hydraulic circuit system, belong to rotary drilling rig hydraulic efficiency system technical field.
Background technology
During rotary drilling rig operation, needing frequent revolution getting-on platform to be used for unloading soil, owing to whole car weight amount is big, center of gravity height, velocity of rotation is all limited in 3-5 and encloses every minute. Velocity of rotation and revolution stationarity thereof are required higher by whole car, otherwise can bring the person property harm such as overturning. Current domestic rotary drilling rig hydraulic efficiency system many employings positive flow, minus flow or load sensitive control system, wherein each producer of the restriction of velocity of rotation is taken measures different by positive flow, inverted flux control system, there is pollution, the problem such as not energy-conservation.
Current domestic rotary drilling rig hydraulic efficiency system is mainly excavator and develops, and minus flow system rotary loop hydraulic schematic diagram is as shown in Figure 1.
As shown in Figure 1 and Figure 2, during attonity, main pump 4 output flow Qp, by the whole oil return box in position in master control valve 2, now flows through the flow Qa=0 of rotary motor, oil return box flow Qr=Qp. Due to damper hole 2.2 throttling action, form feedback pressure Pi and promote the variable mechanism 4.1 of main pump 4 to be in little displacement condition such as section A-B in Fig. 2.
During revolution action, press revolution button, pull pilot handle 3 simultaneously, pilot handle 3 exports secondary pressure oil and drives the revolution connection spool 2.3 of master control valve 2 to commutate, the flow Qa flowing through rotary motor 1 increases by curve H-E-F gradually until Qp=Qa, and in master control valve 2, recirculating oil quantity Qr in position is decreased to 0 gradually by curve A-B-G, and feedback pressure Pi reduces gradually, variable mechanism 4.1 orders about main pump 4 discharge capacity and increases gradually by curve A-B-C-D-E-F, it is achieved revolution action. Less owing to turning round required power, during revolution action, the control of main pump power is not worked, and now main pump is generally operational in maximum delivery state (such as E-F section in Fig. 2). Due to whole-car parameters requirement, main pump peak flow generally designs relatively big, as conflicting in C point in Fig. 2 with the little flow required during revolution.
The method of current domestic restriction velocity of rotation is change master control valve revolution connection valve core structure, as shown in Figure 3. Master control valve 2 turns round position throttle orifice in connection spool 2.3 increase, the pressure oil that during revolution action, pilot handle 3 exports drives spool 2.3 to commutate, compare with Fig. 1, which no matter to direction turn round, middle position does not all cut off completely, still having part pressure oil by position oil duct in spool 2.3 through damper hole 2.2 hydraulic return fuel tank, variable mechanism 4.1 end at main pump 4 forms certain feedback pressure Pi0 simultaneously, makes main pump 4 place D point in fig. 2. Thus reach output flow when reducing main pump revolution action, reduce the object of velocity of rotation.
Current domestic rotary drilling rig main valve is specialty hydraulic pressure part producer and provides, and is almost the matching test that rotary drilling rig provides the whole series hydraulic efficiency system specially without producer. There is following shortcoming in technique scheme:
1. not energy-conservation. Although velocity of rotation reduces during revolution action, but the middle position damping oil duct that the partial discharge that main pump 4 exports still flows through revolution connection spool 2.3 flows back to fuel tank, as shown in Figure 2, main pump 4 output flow can meet revolution demand at C point, but this technical scheme is operated in D point, unnecessary flow falls with the form waste of heat energy.
2. technical difficulty height, increase cost. Rotary drilling rig added value is higher, and market demand is less, and rotary drilling rig main valve does not form volume production, and custom-made specific spool cost is higher. Due to technical limitation, need to repeatedly testing processing and just can reach required value, some type needs velocity of rotation lower, can not be worked into the flux values of requirement. Not only if main frame factory oneself changes spool increases cost but also easy contaminated system.
3. universalization is low. Once spool machines, can only with the engine mated mutually, main pump, main valve, rotary motor, step-down gear, revolving support with the use of, if configuration change need to change spool again.
4. stability is poor, affects greatly by extraneous factor. Owing to main pump flow-reduction is the control of main valve feedback port, belonging to closed-loop control, affect feedback pressure Pi value by the factor such as hydraulic oil viscosity, oil temperature and change, namely main pump flow changes thereupon.
Summary of the invention
The problem to be solved in the present invention is the above-mentioned defect in order to overcome tradition Operation of Rotary Pile Drill speed limit, it is provided that a kind of stability is strong, the high and low power consumption of generalization degree, the rotary drilling rig control revolution hydraulic circuit system that the velocity of rotation of any type can be ensured be operated in safe velocity of rotation.
In order to solve the problem, the present invention by the following technical solutions:
A kind of rotary drilling rig control revolution hydraulic circuit system, comprises main pump, and described main pump has master control valve by pipeline connection, and master control valve is communicated with pilot handle and rotary motor respectively by pipeline; Also revolution deceleration device is had by pipeline connection between described main pump and master control valve.
The following is the present invention to the further optimization of such scheme:
Described revolution deceleration device is communicated with guide oil inlet pipe.
Optimize further: revolution deceleration device comprises and the shuttle valve that main pump and master control valve are connected respectively, and shuttle valve is connected by oil duct with guide oil inlet pipe.
Optimize further: the connection oil duct between shuttle valve and guide oil inlet pipe is provided with magnetic valve, adjustable definite value reducing valve, throttle orifice successively.
Optimizing further: be provided with variable mechanism in described main pump, be provided with revolution connection spool in described master control valve, described revolution connection spool is connected with rotary motor with pilot handle respectively by pipeline.
Optimize further: in described master control valve, surplus valve is also installed, described surplus valve enter oil side and revolution connection spool and variable mechanism respectively by oil duct and pipeline connection.
Optimize further: described shuttle valve is connected with variable mechanism respectively with revolution connection spool.
The present invention adopts such scheme, rotary drilling rig attonity or revolution beyond other actions time, magnetic valve in revolution deceleration device must not electricity, the feedback oil circuit of main valve produces the shuttle valve of feedback pressure in revolution deceleration device to main pump variable mechanism, and whole working oil path and Fig. 1 are completely the same.
During Operation of Rotary Pile Drill action, when pressing revolution button, the magnetic valve in revolution deceleration device obtains electric, and guide oil produces pressure P i1 through adjustable definite value reducing valve, arrives shuttle valve through magnetic valve and compares with feedback pressure Pi. When pilot handle is played the part of less, when in revolution connection spool, position is not closed completely, namely during Qr �� 0, feedback pressure Pi > Pi1, now main pump flow is in the change of A-B-C section, and discharge of main pump controls by feedback pressure, it may be achieved the fine setting of revolution action. When Qr is reduced to certain value, namely during Pi��Pi1, now main pump flow controls by Pi1, the stable C point in fig. 2 of main pump output flow, thus reaches the top speed of restriction revolution action.
The present invention adopts such scheme, has the following advantages:
1. energy-conservation. During revolution action top speed, not producing unnecessary flow, the flow that main pump produces is all for the revolution of rotary motor. As shown in Figure 2, main pump stability of flow is at C point, and the D point of more former technical scheme is energy-conservation.
2. technical difficulty is low, it is easy to realize. This deceleration device can the adjustable definite value reducing valve of step-less adjustment, make the main pump stability of flow any point in B-E in fig. 2. Without the need to changing spool, only pipeline need to be assembled, pollution-free.
3. general degree height. Any minus flow system all can use this device restriction main pump flow, can meet fine setting characteristic, can limit again top speed. Connected by different pipelines, the rotary drilling rig of positive flow system also can use.
4. stable. This device uses definite value reducing valve, and stable output pressure directly controls discharge of main pump, belongs to opened loop control. Former scheme uses the control of main valve feedback pressure, belongs to closed-loop control. Opened loop control inherently has stability.
Below in conjunction with drawings and Examples, the invention will be further described.
Accompanying drawing explanation
Accompanying drawing 1 is conventional negative flow system rotary loop hydraulic schematic diagram in background of invention;
Accompanying drawing 2 is that in background of invention, flow system flow divides figure;
Accompanying drawing 3 is the structure principle chart turning round hydraulic circuit in background of invention;
Accompanying drawing 4 is the structure principle chart of control revolution hydraulic circuit in the embodiment of the present invention;
In figure: 1-rotary motor; 2-master control valve; 2.1-surplus valve; 2.2 throttle orifice; 2.3-revolution connection spool; 3-pilot handle; 4-main pump; 4.1-variable mechanism; 5-turns round deceleration device; 5.1-throttle orifice; 5.2-is adjustable definite value reducing valve; 5.3-magnetic valve; 5.4-shuttle valve; 6-guide oil inlet pipe.
Embodiment
Embodiment, as shown in Figure 4, a kind of rotary drilling rig control revolution hydraulic circuit system, comprise main pump 4, it is provided with variable mechanism 4.1 in described main pump 4, described main pump 4 has master control valve 2 by pipeline connection, is provided with revolution connection spool 2.3 in described master control valve 2, and described revolution connection spool 2.3 is communicated with pilot handle 3 and rotary motor 1 respectively by pipeline;
Described master control valve 2 is also provided with surplus valve 2.1, and the oil side of entering of described surplus valve 2.1 joins spool 2.3 by oil duct UNICOM with revolution, and described surplus valve 2.1 enters oil side and variable mechanism 4.1 passes through pipeline connection.
Being provided with revolution deceleration device 5 on connecting pipeline between described surplus valve 2.1 and variable mechanism 4.1, described revolution deceleration device 5 is communicated with guide oil inlet pipe 6.
The shuttle valve 5.4 that revolution deceleration device 5 comprises with revolution connection spool 2.3 is connected respectively with variable mechanism 4.1, shuttle valve 5.4 is connected by oil duct with guide oil inlet pipe 6.
Connection oil duct between shuttle valve 5.4 and guide oil inlet pipe 6 is provided with magnetic valve 5.3, adjustable definite value reducing valve 5.2, throttle orifice 5.1 successively.
Throttle orifice 5.1 plays pressure stabilization function in working process;
Adjustable definite value reducing valve 5.2, step-less adjustment can make it export a certain steady pressure being less than guide oil pressure;
Magnetic valve 5.3, switch-on regime is not operated in shown position, and energising rear electromagnetic valve is switched to working position, cuts off P2 mouth working oil path simultaneously;
Shuttle valve 5.4, relatively, the greater causes the Variable Control mouth of main pump 4 from A mouth for the decompression oil that adjustable definite value reducing valve 5.2 exports and P3 mouth feedback oil pressure ratio.
In Fig. 4 oil circuit, this revolution deceleration device P1 mouth connects guide's pressure oil, and this mouth pressure is normal pressure, is about stabilized in 4MPa; P2, T mouth causes fuel tank by pipeline; P3 mouth connects main valve 2 reverse feedback oil circuit; A mouth connects main pump 4 Variable Control mouth; M mouth is pressure tap, for measuring the decompression pressure of adjustable definite value reducing valve 5.2.
The principle of work of the present invention is:
Rotary drilling rig attonity or revolution beyond other actions time, magnetic valve 5.3 in revolution deceleration device 5 must not be electric, the feedback oil circuit of main valve 2 produces shuttle valve 5.4 to the main pump variable mechanism of feedback pressure in revolution deceleration device 5, and whole working oil path and Fig. 1 are completely the same.
During Operation of Rotary Pile Drill action, when pressing revolution button, the magnetic valve 5.3 in revolution deceleration device 5 obtains electric, and guide oil produces pressure P i1 through adjustable definite value reducing valve 5.2, arrives shuttle valve 5.4 through magnetic valve 5.3 and compares with feedback pressure Pi. When pilot handle 3 is played the part of less, when in spool 2.3, position is not closed completely, namely during Qr �� 0, feedback pressure Pi > Pi1, now main pump 4 flow is in the change of A-B-C section, and discharge of main pump controls by feedback pressure, it may be achieved the fine setting of revolution action. When Qr is reduced to certain value, namely during Pi��Pi1, now main pump 4 flow controls by Pi1, the stable C point in fig. 2 of main pump output flow, thus reaches the top speed of restriction revolution action.
Claims (1)
1. rotary drilling rig control revolution hydraulic circuit system, comprises main pump (4), and described main pump (4) has master control valve (2) by pipeline connection, and master control valve (2) is communicated with pilot handle (3) and rotary motor (1) respectively by pipeline; It is characterized in that: between described main pump (4) and master control valve (2), also have revolution deceleration device (5) by pipeline connection;
Described revolution deceleration device (5) is communicated with guide oil inlet pipe (6);
Revolution deceleration device (5) comprises and the shuttle valve (5.4) that main pump (4) and master control valve (2) are connected respectively, and shuttle valve (5.4) is connected by oil duct with guide oil inlet pipe (6);
Connection oil duct between shuttle valve (5.4) and guide oil inlet pipe (6) is provided with magnetic valve (5.3), adjustable definite value reducing valve (5.2), throttle orifice (5.1) successively;
Being provided with variable mechanism (4.1) in described main pump (4), be provided with revolution connection spool (2.3) in described master control valve (2), described revolution connection spool (2.3) is connected with rotary motor (1) with pilot handle (3) respectively by pipeline;
Rotary drilling rig attonity or revolution beyond other actions time, magnetic valve (5.3) in revolution deceleration device (5) must not be electric, and the shuttle valve (5.4) of the feedback oil circuit generation feedback pressure of master control valve (2) in revolution deceleration device (5) is to main pump variable mechanism (4.1);
During Operation of Rotary Pile Drill action, when pressing revolution button, the magnetic valve (5.3) in revolution deceleration device (5) obtains electric, guide oil produces pressure P i1 through adjustable definite value reducing valve (5.2), arrive shuttle valve (5.4) through magnetic valve (5.3) to compare with feedback pressure Pi, it may be achieved the fine setting of revolution action;
In described master control valve (2), surplus valve (2.1) is also installed, described surplus valve (2.1) enter oil side with revolution connection spool (2.3) and variable mechanism (4.1) respectively by oil duct and pipeline connection;
Described shuttle valve (5.4) is connected with variable mechanism (4.1) respectively with revolution connection spool (2.3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310500330.2A CN103527073B (en) | 2013-10-23 | 2013-10-23 | Rotary drilling rig control revolution hydraulic circuit system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310500330.2A CN103527073B (en) | 2013-10-23 | 2013-10-23 | Rotary drilling rig control revolution hydraulic circuit system |
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| CN103527073A CN103527073A (en) | 2014-01-22 |
| CN103527073B true CN103527073B (en) | 2016-06-01 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104555741B (en) * | 2014-12-31 | 2016-10-05 | 中联重科股份有限公司 | A kind of rotary drilling rig master winch control system and rotary drilling rig |
| CN107795278B (en) * | 2017-11-16 | 2023-08-01 | 恒天九五重工有限公司 | Speed limiting method for working device of pile driver and hydraulic speed limiting system |
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|---|---|---|---|---|
| US4887428A (en) * | 1987-07-31 | 1989-12-19 | Honda Giken Kogyo Kabushiki Kaisha | Hydraulic control device for a continuously variable transmission for motor vehicles |
| CN101219758A (en) * | 2007-12-20 | 2008-07-16 | 三一重工股份有限公司 | Method for max rotation speed restriction of turning engineering machinery and system thereof |
| CN201165455Y (en) * | 2007-10-31 | 2008-12-17 | 三一重工股份有限公司 | Crane swiveling speed control system |
| CN201358710Y (en) * | 2009-03-18 | 2009-12-09 | 湖南山河智能机械股份有限公司 | Clockwise and anticlockwise rotation soil throwing control device of rotary drilling rig |
| CN102092647A (en) * | 2011-02-14 | 2011-06-15 | 上海三一科技有限公司 | Hydraulic system used for revolving jogging control on crawler crane |
| CN201943570U (en) * | 2010-12-30 | 2011-08-24 | 北京市三一重机有限公司 | Upper-part rotation speed-limiting device for rotary drilling rig |
| CN202575740U (en) * | 2012-05-22 | 2012-12-05 | 徐州重型机械有限公司 | Low speed rotation control system of crane |
| CN203547527U (en) * | 2013-10-23 | 2014-04-16 | 福田雷沃国际重工股份有限公司 | Rotary drilling rig-controlled rotation hydraulic loop system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7325398B2 (en) * | 2004-03-05 | 2008-02-05 | Deere & Company | Closed circuit energy recovery system for a work implement |
-
2013
- 2013-10-23 CN CN201310500330.2A patent/CN103527073B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4887428A (en) * | 1987-07-31 | 1989-12-19 | Honda Giken Kogyo Kabushiki Kaisha | Hydraulic control device for a continuously variable transmission for motor vehicles |
| CN201165455Y (en) * | 2007-10-31 | 2008-12-17 | 三一重工股份有限公司 | Crane swiveling speed control system |
| CN101219758A (en) * | 2007-12-20 | 2008-07-16 | 三一重工股份有限公司 | Method for max rotation speed restriction of turning engineering machinery and system thereof |
| CN201358710Y (en) * | 2009-03-18 | 2009-12-09 | 湖南山河智能机械股份有限公司 | Clockwise and anticlockwise rotation soil throwing control device of rotary drilling rig |
| CN201943570U (en) * | 2010-12-30 | 2011-08-24 | 北京市三一重机有限公司 | Upper-part rotation speed-limiting device for rotary drilling rig |
| CN102092647A (en) * | 2011-02-14 | 2011-06-15 | 上海三一科技有限公司 | Hydraulic system used for revolving jogging control on crawler crane |
| CN202575740U (en) * | 2012-05-22 | 2012-12-05 | 徐州重型机械有限公司 | Low speed rotation control system of crane |
| CN203547527U (en) * | 2013-10-23 | 2014-04-16 | 福田雷沃国际重工股份有限公司 | Rotary drilling rig-controlled rotation hydraulic loop system |
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