CN1049947C - Controlling system controlled by flow for hydraulic rock drill - Google Patents
Controlling system controlled by flow for hydraulic rock drill Download PDFInfo
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- CN1049947C CN1049947C CN95110838A CN95110838A CN1049947C CN 1049947 C CN1049947 C CN 1049947C CN 95110838 A CN95110838 A CN 95110838A CN 95110838 A CN95110838 A CN 95110838A CN 1049947 C CN1049947 C CN 1049947C
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Abstract
The present invention relates to a control system for hydraulic rock drills controlled by flow, which is composed of an HD pump 1, a cone valve 2, a pressure reducing valve 3, a reversal valve 4, a safety valve 5 and a hydraulic rock drill 6. The system is connected in two control modes of a normally closed mode and a normally open mode through oil passages. The output power of the hydraulic rock drill can be continuously changed in a stepless mode only by changing the slope angle of a handle of the pressure reducing valve 3. The system can adapt to various requirements of operating conditions and realizes the purpose that full energy impact and half energy impact share one device. The system has the advantages of simple oil passage, few elements, good reliability and convenient movement of the device.
Description
The present invention relates to a kind of hydraulic fluid work system, especially with relevant with the control system of transmitting the physics quantitative changeization by the control fluid flow.
The hydraulic control system of at present domestic and international hydraulic gate, generally be to change the system that controls according to pressure, as constant displacement pump, manual variable pump, constant pressure variable displacement pump and permanent power and variable pumping system etc., their control method all is the output that comes control pump by the pressure of controlling, to reach the power output of control hydraulic gate, promptly impact and the purpose of output parameters such as frequency of impact.The needs of the heavily impact (all-round) when light impact (half energy) when satisfying the hydraulic gate perforate and operate as normal, generally all designed the two-stage pressure control loop, for example, the China that in May, 1989, Central-South Polytechnic University Publishing House published is neat to appoint in " hydraulic vibration equipment Dynamic Theory and design " book that virtuous, Liu Shixun etc. writes, and § 1.4 " chassis hydraulic system " (P7-10) has promptly adopted manual variable pump as systems pumps.Simultaneously for obtain gently to dash, heavily towards the two-stage surge, just be provided with secondary remote pressure control valve in the system, its pressure control loop is made up of some discrete switch valves, regulate the output of hydraulic gate by the console switch valve, but can not realize continuous control to each output parameter of hydraulic gate, then must adopt a plurality of pressure valve as obtaining multistage pressure, such system valve is many, oil circuit is complicated, efficient is low, energy loss causes localized hyperthermia of system simultaneously, directly influences the performance of systematic function.
For realizing simplifying oil circuit by the discrete control of level being arranged to the central controlled transition of stepless continuous, reduce the energy loss that causes with valve quantity and overflow etc., improve the effect of hydraulic gate, the present invention proposes a kind of hydraulic gate control system by flow-control of meter.
Hydraulic gate control system of the present invention mainly is made up of the HD plunger variable pump that surges (hereinafter to be referred as plunger variable pump 1), plug-in mounting cone valve (hereinafter to be referred as cone valve 2), guide's remote control reducing valve (hereinafter to be referred as reducing valve 3), hydraulic control two position three way directional control valve (hereinafter to be referred as reversal valve 4), safety overflow valve 5 and hydraulic gate 6.Wherein plunger variable pump 1 can replace with improved constant pressure variable displacement pump; Reducing valve 3 can replace with other pressure regulation reducing valve; Cone valve 2 can replace with hydraulic control one-way valve with the allomeric function of reversal valve 4; Especially the present invention has designed new oil circuit, such as reducing valve 3 remote control plunger variable pumps 1, makes its stepless continuous change output; Again with reducing valve 3 control reversal valves 4; And reversal valve 4 is as the keying of pilot-actuated valve control cone valve 2, make control system more perfect, reasonable, working condition according to cone valve 2 hydraulic gate 6 under the different operating state, be normally closed with Control System Design and often open two kinds of control modes: when promptly cone valve 2 cuts out, hydraulic gate 6 is not worked, and its hydraulic gate 6 work when opening then claim normally closed system; Otherwise, then claim normal open system.Often open and the closed system both sides relation, be that the oil circuit between cone valve 2, reversal valve 4 and hydraulic gate 6 threes connects difference, the two exists mutual non-relation; Normally closed system is when reducing valve 3 work, reversal valve 4 right position work, cone valve 2 is opened, oil stream is by cone valve 2, promote hydraulic gate 6 work, otherwise oil stream then by safety overflow valve 5 unloaded off-loads (this moment, plunger variable pump 1 was in the high-pressure low-flow operating mode), also finished by safety overflow valve 5 by the safe off-load under the improper operating mode.Normal open system is when reducing valve 3 work, the position work of reversal valve 4 right side, and cone valve 2 cuts out, and oil stream passes through oil circuit 13 and promotes hydraulic gates 6 work, otherwise oil stream then passes through cone valve 2 unloaded off-loads, but not the safe off-load under the nominal situation is also finished by safety overflow valve 5.In said system, the output one tunnel of reducing valve 3 connects reversal valve 4, and one the tunnel connects plunger variable pump 1.And in normally closed system, the output oil pressure of plunger variable pump 1 divides three the tunnel, the one tunnel to connect safety overflow valve 5, and one the tunnel connects reversal valve 4 (road this reversal valve 4 of output control of reducing valve 3, thereby the keying of corresponding control cone valve 2), and another road connects cone valve 2 cavity of resorptions.When reducing valve 3 no pressure oils are exported, the position work of reversal valve 4 left side, two interface A, C and the oil duct 12 of one road pressure oil of plunger variable pump 1 output by reversal valve 4 affacts cone valve 2 spools it compressed, the pressure oil that plunger variable pump 1 leads to cone valve 2 cavity of resorptions can not back down cone valve 2 spools, and hydraulic gate 6 is not worked; When reducing valve 3 had pressure oil output, reversal valve 4 transferred the work of right position to, and promptly interface C, B connect; The oil of cone valve 2 epicoeles can pass through two the interface C and the B oil sump tank of oil duct 12, reversal valve 4, and 2 cavity of resorption pressure oils can back down cone valve 2 spools thereby plunger variable pump 1 leads to cone valve, promotes hydraulic gate 6 work at the bottom of cone valve 2 valves.By handling the handle of reducing valve 3, its inclination angle of stepless change, can obtain successive control pressure oil, the output flow of control plunger variable pump 1, the output flow of plunger variable pump 1 also continuously changes like this, because flow is depended in the output of the power of hydraulic gate 6, so this system is as long as handle handle and its inclination angle of stepless change of reducing valve 3, get final product the card pricker omen in the 6 rock drilling operations of step-less adjustment hydraulic gate, initiatively regulate impact energy and frequency of impact in phase, in time prevent and eliminate card pricker phenomenon.
Owing to adopted above-mentioned control system, do not need to establish in addition relief circuit and just can realize unloaded off-load, realized stepless continuous control, gently dashed (half energy) and heavily dash (all-round) totally one covering device, can effectively prevent and eliminate the card pricker hydraulic gate, improved the hydraulic rock engine efficiency, and the element of system is few, and oil circuit is simple, good reliability, the equipment conveniently moving.
Fig. 1 is by the normally closed control system schematic diagram of the hydraulic gate of flow-control;
Fig. 2 often opens the control system schematic diagram by the hydraulic gate of flow-control;
Fig. 3 be not with reversal valve often open the control system schematic diagram.
Below in conjunction with the drawings and specific embodiments the present invention is further described.
Embodiment 1: in normally closed control system shown in Figure 1, when reducing valve 3 was not worked, its control oil duct linked to each other with back oil road T, and oil duct 7 is pressure oil output not.After starting plunger variable pump 1 this moment, because its operating characteristic, plunger variable pump 1 is output as high-pressure low-flow oil stream, this moment, cone valve 2 epicoeles were through oil duct 12, the interface C of reversal valve 4 and A and oil circuit 10,14 link to each other with cone valve 2 cavity of resorptions, on the cone valve 2, the pressure oil that cavity of resorption is same in addition, because the characteristics of cone valve 2, cone valve 2 spools compress, be in closed condition, through safety overflow valve 5 oil returns, do not work by hydraulic gate 6 by oil duct 11 for the high-pressure low-flow oil that plunger variable pump 1 is discharged, and system is in unloaded overflow situation, desire to make hydraulic gate 6 work, then need handle the handle of reducing valve 3, make its control mouth meet extraneous controlled pressure oil sources P, so it will export certain controlled pressure oil, lead up to oil duct 7,9 promote reversal valve 4, make it be in the work of right position; Another road is by the variable piston of oil duct 7,8 control plunger variable pumps 1, and the pressure oil of plunger variable pump 1 output backs down cone valve 2 spools through oil duct 11,14, drives hydraulic gate 6 work through oil duct 13.By handling the handle of reducing valve 3, its inclination angle of stepless change, can obtain the output flow of continuous control oil pressure with control plunger variable pump 1, the output percussion power of hydraulic gate 6 can be changed according to concrete working condition requirement easily, like this, make all can stroke and the shared covering device of half energy impact and oil circuit also just realized.
Embodiment 2: shown in Figure 2 often opening in the control system, when inoperation subtracts the handle of valve 3, oil circuit 7 is pressure oil output not equally, reversal valve 4 is in the work of position, a left side, the pressure oil of oil duct 10 can not give the spool of cone valve 2 with pressure by reversal valve 4, the spool off-load that the pressure oil of plunger variable pump 1 output backs down cone valve 2 through oil duct 11,15,14, hydraulic gate 6 is not worked, and cone valve 2 is in normally open.When handling the handle of reducing valve 3, the controlled pressure oil of its output makes reversal valve 4 be in the work of right position through oil duct 7,9, the pressure oil of oil duct 10 gives cone valve 2 spools with pressure through two interface B, C and the oil duct 12 of reversal valve 4, cone valve 2 cuts out, and the pressure oil of plunger variable pump 1 output drives hydraulic gate 6 work through oil duct 11,13.
Embodiment 3: when only needing system to work under the condition of often opening in the conversion that does not need normally-open normally-close, the reversal valve 4 among the embodiment 2 can be cancelled, and system becomes as shown in Figure 3.Promptly from the controlled pressure oil of reducing valve 3 output on the one hand by oil duct 7 and 8 remote control plunger variable pumps 1, the epicoele by oil duct 7 and 7 ' enter cone valve 2 makes it be in closed condition simultaneously.The hydraulic oil of plunger variable pump 1 output at this moment drives hydraulic gate 6 work through oil duct 11,13.
Claims (4)
1. hydraulic gate control system by flow-control, form by variable pump, reversal valve, safety overflow valve and hydraulic gate etc., it is characterized in that: by set relevant oil duct, with reducing valve (3) remote control plunger variable pump (1) and reversal valve (4), control cone valve (2) with reversal valve (4) guide again, constitute it normally closed or often open control system.
2. control system according to claim 1, it is characterized in that: in normally closed system, signal oil from reducing valve (3) output, by oil duct (7,9) control reversal valve (4) is in the work of right position, through oil duct (12), two interfaces (C, B) pressure oil of cone valve (2) epicoele is outwards unloaded and to let out, open cone valve (2) from the hydraulic oil (P) of plunger variable pump (1) by oil duct (11,14), through oil duct (13) control hydraulic gate (6).
3. control system according to claim 1, it is characterized in that: in normal open system, signal oil from reducing valve (3) output, be in the work of right position by oil duct (7,9) control reversal valve (4), hydraulic oil (P) from plunger variable pump (1), act on cone valve (2) epicoele through oil duct (10), two interfaces (B, C), oil duct (12) on the one hand it is closed, on the other hand by oil duct (11,13) control hydraulic pressure cutter machine (6).
4. control system according to claim 1, it is characterized in that: in normal open system, signal oil from reducing valve (3) output, the epicoele that directly enters cone valve (2) by oil duct (7,7 ') is closed it, controls hydraulic gate (6) from the hydraulic oil (P) of plunger variable pump (1) through oil duct (11,13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95110838A CN1049947C (en) | 1995-07-07 | 1995-07-07 | Controlling system controlled by flow for hydraulic rock drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95110838A CN1049947C (en) | 1995-07-07 | 1995-07-07 | Controlling system controlled by flow for hydraulic rock drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1140228A CN1140228A (en) | 1997-01-15 |
| CN1049947C true CN1049947C (en) | 2000-03-01 |
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ID=5078181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95110838A Expired - Fee Related CN1049947C (en) | 1995-07-07 | 1995-07-07 | Controlling system controlled by flow for hydraulic rock drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1049947C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561937A (en) * | 2012-01-20 | 2012-07-11 | 中船重工中南装备有限责任公司 | Adjustable rock drilling control system of hydraulic rock drilling machine |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101042050B (en) * | 2007-01-18 | 2010-10-13 | 宝钢集团上海梅山有限公司 | Medium sized or large sized hole drilling flat car wireless remote controller |
| CN100520089C (en) * | 2008-01-18 | 2009-07-29 | 美的集团有限公司 | Control device and control method of hydraulic drive motor |
| CN102536109B (en) * | 2011-12-26 | 2014-07-09 | 三一重型装备有限公司 | Rock drilling impact pressure regulating device and rock drilling machine with same |
| CN102561936B (en) * | 2012-01-20 | 2014-02-19 | 中船重工中南装备有限责任公司 | Rock drilling control system of hydraulic rock drilling machine |
| CN102966620A (en) * | 2012-11-19 | 2013-03-13 | 无锡市京锡冶金液压机电有限公司 | Anti-jamming valve structure of hydraulic system |
| CN105156018B (en) * | 2015-08-05 | 2017-06-30 | 江西蓝翔重工有限公司 | A kind of hydraulic gate control system by Power Control anti-sticking pricker |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86106036A (en) * | 1985-09-06 | 1987-05-20 | 日立建机株式会社 | Handle the hydraulic control circuit device that selector valve is used |
| CN2091948U (en) * | 1991-05-15 | 1992-01-01 | 深圳四方机械电子有限公司 | Oil-distributing and operating mechanism for hydraulic rock drill |
-
1995
- 1995-07-07 CN CN95110838A patent/CN1049947C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86106036A (en) * | 1985-09-06 | 1987-05-20 | 日立建机株式会社 | Handle the hydraulic control circuit device that selector valve is used |
| CN2091948U (en) * | 1991-05-15 | 1992-01-01 | 深圳四方机械电子有限公司 | Oil-distributing and operating mechanism for hydraulic rock drill |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561937A (en) * | 2012-01-20 | 2012-07-11 | 中船重工中南装备有限责任公司 | Adjustable rock drilling control system of hydraulic rock drilling machine |
| CN102561937B (en) * | 2012-01-20 | 2013-11-06 | 中船重工中南装备有限责任公司 | Adjustable rock drilling control system of hydraulic rock drilling machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1140228A (en) | 1997-01-15 |
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