CN102425401B - Electro-hydraulic logic control loop of rock drilling actions of hydraulic rock drilling machine - Google Patents
Electro-hydraulic logic control loop of rock drilling actions of hydraulic rock drilling machine Download PDFInfo
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- CN102425401B CN102425401B CN201110366919.9A CN201110366919A CN102425401B CN 102425401 B CN102425401 B CN 102425401B CN 201110366919 A CN201110366919 A CN 201110366919A CN 102425401 B CN102425401 B CN 102425401B
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Abstract
The invention relates to an electro-hydraulic logic control loop of rock drilling actions of a hydraulic rock drilling machine. A first pressure relay, a second pressure relay, a third pressure relay, a first pressure reducing valve, a second pressure reducing valve, a first electromagnetic directional valve, a second electromagnetic directional valve and an overflow valve or a speed regulating valve constitute a first logical control loop of controlling two-stage pressure propulsion by revolution pressure and simultaneously controlling low-pressure impact by low-pressure propulsion; the third pressure relay, the second electromagnetic directional valve and the overflow valve or the speed regulating valve constitute a second logic control loop for controlling two-stage impact pressure by propulsion pressure; and the second pressure relay and a third electromagnetic directional valve constitute a logic control loop of controlling propulsion and lifting by revolution pressure.
Description
Technical field
The present invention relates to a kind of hydraulic rock drilling machine rock drilling action control loop, relate in particular to a kind of hydraulic rock drilling machine and realize the electric liquid loop control logic of impact, revolution, three rock drilling key operations of propelling.
Background technology
Hydraulic rock drilling machine is widely used in rock drilling bore operation because of its efficient, energy-conservation advantage.Rock drilling boring working condition is severe, complicated, is embodied in for different Rock Species and hardness, impacts, turns round, advances three rock drilling key operations need to have good controllability; Adapt to the complicated geologicals such as solution cavity in rock stratum, crack, interlayer, impact, revolution, advance three rock drilling key operations and coupling thereof to possess automatic logic control, automatic anti-aircraft is beaten, anti-sticking pricker.
Miniature digging machine total power throttle system, take Japanese KYB system as Typical Representative, PSVD series main pump, KVSE series main valve.Main pump is the coaxial pump group of total power tetrad, and P1, P2 pump are for being total to swash plate plunger variable pump, and P3 pump is gear pump, and P4 pump is blade pioneer pump, and the output pressure of P1, P2, P3 pump feeds back to the swash plate stroking mechanism of P1, P2 pump simultaneously; Main valve is composite throttling speed governing main valve.Based on the hydraulic rock drilling machine of Miniature digging machine platform and total power throttling hydraulic system exploitation, because of its advantage such as simple, flexible, efficient, energy-conservation, at present domesticly successfully put out a new product and had good application and development prospect.But its remain problem be rock drilling boring poor reliability, bad adaptability, there is bit shank fracture, drill steel fracture, bit freezing, cannot, by application bottlenecks such as interlayer geology, seriously restrict application and the popularization of this new product.Miniature digging machine total power throttling hydraulic system applications is in controlling hydraulic gate, be merely able to realize independence and the unadjustable control of impacting, turn round, advance three rock drilling key operations, can not realize Auto-matching, the compound logic control of three rock drilling key operations.
Summary of the invention
For the problems referred to above, the object of this invention is to provide a kind of electro-hydraulic logic control loop of rock drilling actions of hydraulic rock drilling machine, realize Auto-matching, the compound logic control of rock drilling machine being impacted, turns round, advanced three rock drilling key operations, improve compliance and the reliability of rock drilling bore operation.
For solving the problems of the technologies described above, the invention provides a kind of electro-hydraulic logic control loop of rock drilling actions of hydraulic rock drilling machine, comprise the first pressure switch, the second pressure switch, the 3rd pressure switch of adjustable pressure; The first reducing valve; The second reducing valve; The first solenoid operated directional valve; The second solenoid operated directional valve; The 3rd solenoid operated directional valve; Overflow valve or flow speed control valve.
Formed by described the first pressure switch, the second pressure switch, the 3rd pressure switch, the first reducing valve, the second reducing valve, the first solenoid operated directional valve, the second solenoid operated directional valve, overflow valve or flow speed control valve that rotation pressure control two stage pressures advance, simultaneously low pressure advances and controls low pressure and impact the first loop control logic.Rotation pressure is introduced the first loop control logic through rotation pressure signal port, advance oil-feed through advancing oil-in to introduce the first loop control logic, by advancing oil-out to draw the first loop control logic, impact by-pass shunt and introduce loop control logic by impacting divergent oil inlet mouth.Described the first pressure switch detects rotation pressure, the first pressure switch setting pressure is lower than hammer drill bit freezing critical pressure, its output signal control first solenoid operated directional valve, the open and close of first solenoid operated directional valve control the first reducing valve and the second reducing valve, the first reducing valve is the control of low pressure propelling pressure, the second reducing valve 3.2 is the control of normal rock drilling propelling pressure, advances thereby realize rotation pressure logic control two stage pressures; The 3rd pressure switch detects propelling pressure, the 3rd pressure switch setting pressure is higher than the first reducing valve setting pressure, and lower than the second reducing valve setting pressure, the 3rd pressure switch output signal control the second solenoid operated directional valve, the second solenoid operated directional valve controlling water kick valve or flow speed control valve, overflow valve or flow speed control valve are that control is opened in the overflow that low pressure is impacted, and impact thereby realize low pressure promotion logic control low pressure.
Form propelling pressure control two-stage surge the second loop control logic by described the 3rd pressure switch, the second solenoid operated directional valve, overflow valve or flow speed control valve, advance load pressure to be detected by the 3rd pressure switch, its output signal control solenoid operated directional valve, solenoid operated directional valve controlling water kick valve or flow speed control valve, overflow valve or flow speed control valve are closed as normal pressure rock drilling impact, overflow valve or flow speed control valve are that low pressure is impacted while unlatching, thereby realize propelling pressure logic control two-stage surge; Surge is introduced the second loop control logic by impacting divergent oil inlet mouth.
Form in rotation pressure control propelling and carry loop control logic by described the second pressure switch, the 3rd solenoid operated directional valve, advance guide oil route guide oil oil-in to introduce loop control logic, draw loop control logic by guide oil oil-out, rotation pressure is detected by the second pressure switch, the second pressure switch output signal control the 3rd solenoid operated directional valve, in the time that rotation pressure reaches setting value, realize and advance the commutation of guide's oil circuit, rock drilling advances action to be converted to and proposes action.
Further, described rotation pressure control is carried the 3rd solenoid operated directional valve control propelling guide's oil circuit in loop or is advanced working connection commutation on advancing.
Described low pressure advances/impacts and should be considered as relative concept, recommend the normal propelling/surge of adapt to different rock-layers according to hammer drill manufacturer, be converted into the propelling/surge in corresponding hydraulic system, be considered as normal propelling/surge, now advanced state is considered as normal propelling/impact conditions; With respect to normal propelling/impact, be less than normal propelling/surge for adapting to propelling/surge that in rock drilling process, other operating modes occur, be considered as the low pressure propelling/surge described in this patent.
The beneficial effect that the present invention brings: the present invention realizes the automatic electric liquid logic control of propelling pressure control surge, effectively blank-run prevention; The present invention realizes rotation pressure control and advances the automatic electric liquid logic control of carrying, effectively capable of preventing sticking; The present invention realizes rotation pressure automatic electric liquid logic control two stage pressures and advances, and low pressure advances and controls low pressure impact simultaneously, improves by the ability of interlayer geology and pre-capable of preventing sticking.
Can adapt to different rock behavio(u)r and the automatic logic controls of geology and rush in, turn round, advance three rock drilling key operations compositive relations, effectively blank-run prevention, anti-sticking pricker, thereby drilling efficiency, adaptive capacity and the reliability of raising hydraulic rock drilling machine.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention electricity liquid loop control logic structural representation;
Fig. 2 is that embodiment of the present invention electricity liquid loop control logic is applied schematic diagram on hydraulic rock drilling machine.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail:
A kind of electro-hydraulic logic control loop of rock drilling actions of hydraulic rock drilling machine shown in accompanying drawing 1 and Fig. 2, by pressure switch 1.1, pressure switch 1.2, the pressure switch 1.3 of adjustable pressure, reducing valve 3.1, reducing valve 3.2, solenoid operated directional valve 2, solenoid operated directional valve 4, overflow valve 5 forms rotation pressure control two stage pressures propellings, low pressure advances and controls low pressure impact loop control logic simultaneously; Form propelling pressure control height two-stage surge loop control logic by pressure switch 1.3, solenoid operated directional valve 4, overflow valve 5; Form in rotation pressure control propelling and carry loop control logic by pressure switch 1.2, solenoid operated directional valve 6.
Rotation pressure is introduced rock drilling through hydraulic fluid port R and is moved electric liquid logic control block by turning round working connection, and propelling pressure moves electric liquid logic control block to hydraulic fluid port F1 by hydraulic fluid port F through rock drilling, and surge is drawn oil to hydraulic fluid port I by working connection bypass.Pressure switch 1.1 often leaves, and pressure setting is lower than revolution bit freezing critical pressure, and its output electric signal is controlled solenoid operated directional valve 2 by after amplifying; Reducing valve 3.1 is the control of low pressure propelling pressure, and reducing valve 3.2 is the control of normal rock drilling propelling pressure; Pressure switch 1.3 often leaves, and its pressure setting is lower than normal rock drilling propelling pressure control valve reducing valve 3.2 pressure set points, and higher than low pressure propelling pressure control valve reducing valve 3.1 pressure set points, its output electric signal is by controlling solenoid operated directional valve 4 after amplifying; Overflow valve 5 opening pressures are set as hammer drill surge downscale protection value.When rotation pressure is during lower than the setting value of pressure switch 1.1, export without electric signal, electric installation control solenoid operated directional valve 2 is in normal position, reducing valve 3.2 works, pressure switch 1.3 obtains electric, output signal is by electric installation control solenoid operated directional valve 4 in left position, and overflow valve 5 cuts out, and propelling pressure and surge are in normal operation condition; When rotation pressure is during higher than the pressure set points of pressure switch 1.1, pressure switch 1.1 obtains electric, its output electric signal is amplified and is controlled solenoid operated directional valve 2 in left position by electric installation, reducing valve 3.1 is opened, and pressure switch 1.3 dead electricity, export without electric signal simultaneously, solenoid operated directional valve 4 is in right position, overflow valve 5 is opened, and rock drilling action is in the pre-capable of preventing sticking that low pressure advances, low pressure is impacted, and low pressure advances electric liquid logic control low pressure impact conditions simultaneously.
Advance load pressure to be detected by pressure switch 1.3, pressure switch 1.3 pressure settings are lower than the pressure set points of normal rock drilling propelling pressure control valve reducing valve 3.2, and higher than the pressure set points of low pressure propelling pressure control valve reducing valve 3.1.In the time advancing load pressure to be greater than the setting pressure of pressure switch 1.3, its output signal is amplified and is controlled solenoid operated directional valve 4 in left position by electric installation, and overflow valve 5 cuts out, and surge is in normal rock drilling job state; In the time advancing load pressure lower than the setting pressure of pressure switch 1.3, without electric signal output, solenoid operated directional valve 4 is in right position, and overflow valve 5 is opened, and rock drilling action is in low pressure advances, low pressure is impacted blank-run prevention state.
Advance guide oil route guide oil oil-in Fa1, Fb1 to cause rock drilling action logic controll block, cause main valve by guide oil oil-out Fa2, Fb2 and advance control connection guide.Pressure switch 1.2 pressure settings are the threshold of hammer drill bit freezing rotation pressure.When revolution load pressure is during lower than the pressure set points of pressure switch 1.2, no signal output, solenoid operated directional valve 6, in normal position, does not change the control that advances handle main valve to be advanced to connection, and rock drilling is moved in normal rock drilling job state; When revolution load pressure is during higher than the pressure set points of pressure switch 1.2, its output electric signal is amplified control solenoid operated directional valve 6 by electric installation and is commutated, control and advance the commutation of guide's oil circuit, advance action to switch to and propose action, this logical action is capable of preventing sticking state.
Substitute the technical scheme of overflow valve for flow speed control valve, flow speed control valve substitutes overflow valve and realizes the function of impacting by-pass shunt; Advance the alternative technical scheme of controlling the commutation of guide's oil circuit that advances of working connection commutation for controlling, commutate and realize the function that advances action to turn to by oil circuit, for a person skilled in the art, on the technology contents disclosing in the present invention, without paying extra creative work, can realize its function, and achieve the desired result, be not described in detail in this.
The present invention is not limited to above-mentioned concrete embodiment, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, the conversion of making, within all should being included in protection scope of the present invention.
Claims (2)
1. electro-hydraulic logic control loop of rock drilling actions of hydraulic rock drilling machine, is characterized in that: the first pressure switch (1.1), the second pressure switch (1.2), the 3rd pressure switch (1.3) that comprise adjustable pressure; The first reducing valve (3.1), the second reducing valve (3.2); The first solenoid operated directional valve (2), the second solenoid operated directional valve (4), the 3rd solenoid operated directional valve (6); Overflow valve or flow speed control valve (5);
Control low pressure and impact the first loop control logic by described the first pressure switch (1.1), the second pressure switch (1.2), the 3rd pressure switch (1.3), the first reducing valve (3.1), the second reducing valve (3.2), the first solenoid operated directional valve (2), the second solenoid operated directional valve (4), overflow valve or flow speed control valve (5) formation rotation pressure control two stage pressures propellings, low pressure propelling simultaneously; Described the first pressure switch (1.1) detects rotation pressure, the first pressure switch (1.1) setting pressure is lower than hammer drill bit freezing critical pressure, its output signal control first solenoid operated directional valve (2), the first solenoid operated directional valve (2) is controlled the open and close of the first reducing valve (3.1) and the second reducing valve (3.2), the first reducing valve (3.1) is the control of low pressure propelling pressure, the second reducing valve (3.2) is the control of normal rock drilling propelling pressure, advances thereby realize rotation pressure control two stage pressures; The 3rd pressure switch (1.3) detects propelling pressure, the 3rd pressure switch (1.3) setting pressure is higher than the first reducing valve (3.1) setting pressure, and lower than the second reducing valve (3.2) setting pressure, the 3rd pressure switch (1.3) output signal control the second solenoid operated directional valve (4), the second solenoid operated directional valve (4) controlling water kick valve or flow speed control valve (5), the overflow control that overflow valve or flow speed control valve (5) impact for low pressure, advances control low pressure to impact thereby realize low pressure;
Form propelling pressure control two-stage surge the second loop control logic by described the 3rd pressure switch (1.3), the second solenoid operated directional valve (4), overflow valve or flow speed control valve (5), advance load pressure to be detected by the 3rd pressure switch (1.3), its output signal control second solenoid operated directional valve (4), the second solenoid operated directional valve (4) controlling water kick valve or flow speed control valve (5), overflow valve or flow speed control valve (5) are that normal rock drilling is impacted while closing, overflow valve or flow speed control valve (5) are opened as low pressure impact, thereby realize propelling pressure control two-stage surge;
By described the second pressure switch (1.2), the 3rd solenoid operated directional valve (6) forms in rotation pressure control propelling carries control loop, advance guide oil route guide oil oil-in (Fa1, Fb1) introduce loop control logic, by guide oil oil-out (Fa2, Fb2) draw loop control logic, rotation pressure is detected by the second pressure switch (1.2), the second pressure switch (1.2) output signal control the 3rd solenoid operated directional valve (6), in the time that rotation pressure reaches the hammer drill rotation pressure under critical bit freezing state, realize and advance the commutation of guide's oil circuit, rock drilling advances action to be converted to and proposes action.
2. electro-hydraulic logic control loop of rock drilling actions of hydraulic rock drilling machine according to claim 1, is characterized in that: control loop is carried in described rotation pressure control the 3rd solenoid operated directional valve (6) on advancing is controlled and advanced guide's oil circuit or advance working connection commutation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110366919.9A CN102425401B (en) | 2011-11-18 | 2011-11-18 | Electro-hydraulic logic control loop of rock drilling actions of hydraulic rock drilling machine |
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| CN201110366919.9A CN102425401B (en) | 2011-11-18 | 2011-11-18 | Electro-hydraulic logic control loop of rock drilling actions of hydraulic rock drilling machine |
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| CN102425401B true CN102425401B (en) | 2014-05-28 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777165A (en) * | 2012-07-23 | 2012-11-14 | 太仓市旭达机械设备有限公司 | Detection and control device for underreaming bits |
| CN103148061A (en) * | 2013-03-07 | 2013-06-12 | 江苏谷登工程机械装备有限公司 | Horizontal directional driller hydraulic pressure electric joint control system |
| CN104358557A (en) * | 2014-11-04 | 2015-02-18 | 北京中冶迈克液压有限责任公司 | Liquid-gas control system for controlled-pressure drilling equipment |
| CN104595264B (en) * | 2015-01-29 | 2017-01-25 | 江苏鑫蓮液压机电有限公司 | hydraulic drilling machine controller |
| CN105351272B (en) * | 2015-12-11 | 2017-05-24 | 重庆纳川山隅重工设备有限公司 | Self-adaptive valve group for hydraulic rock drill |
| CN113202454B (en) * | 2021-04-23 | 2022-06-07 | 中国铁建重工集团股份有限公司 | Method, system, equipment and storage medium for controlling power of rock drilling machine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4356871A (en) * | 1979-10-06 | 1982-11-02 | Toyo Kogyo Co., Ltd. | Hydraulic control system for a rock drill |
| CA2248697A1 (en) * | 1997-10-03 | 1999-04-03 | Sig Rocktools Ag | Rock drill |
| US6209321B1 (en) * | 1997-08-29 | 2001-04-03 | Komatsu Ltd. | Hydraulic controller for a working machine |
| CN201412150Y (en) * | 2009-06-22 | 2010-02-24 | 浙江志高机械有限公司 | Drilling machine integration hydraulic control system |
| CN201448104U (en) * | 2009-06-25 | 2010-05-05 | 江苏省无锡探矿机械总厂有限公司 | Anti-lifting and anti-blocking hydraulic system in driller |
| CN201560706U (en) * | 2009-12-23 | 2010-08-25 | 三一重型装备有限公司 | Hydraulic control circuit for rock drill and control system thereof |
| CN202348254U (en) * | 2011-11-18 | 2012-07-25 | 山河智能装备股份有限公司 | Logic control loop for rock drilling action electric fluid of hydraulic rock drilling rig |
-
2011
- 2011-11-18 CN CN201110366919.9A patent/CN102425401B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4356871A (en) * | 1979-10-06 | 1982-11-02 | Toyo Kogyo Co., Ltd. | Hydraulic control system for a rock drill |
| US6209321B1 (en) * | 1997-08-29 | 2001-04-03 | Komatsu Ltd. | Hydraulic controller for a working machine |
| CA2248697A1 (en) * | 1997-10-03 | 1999-04-03 | Sig Rocktools Ag | Rock drill |
| CN201412150Y (en) * | 2009-06-22 | 2010-02-24 | 浙江志高机械有限公司 | Drilling machine integration hydraulic control system |
| CN201448104U (en) * | 2009-06-25 | 2010-05-05 | 江苏省无锡探矿机械总厂有限公司 | Anti-lifting and anti-blocking hydraulic system in driller |
| CN201560706U (en) * | 2009-12-23 | 2010-08-25 | 三一重型装备有限公司 | Hydraulic control circuit for rock drill and control system thereof |
| CN202348254U (en) * | 2011-11-18 | 2012-07-25 | 山河智能装备股份有限公司 | Logic control loop for rock drilling action electric fluid of hydraulic rock drilling rig |
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Effective date of registration: 20240731 Address after: No. 1335 Liangtang East Road, Xingsha Industrial Base, Changsha Economic and Technological Development Zone, Changsha City, Hunan Province 410137 Patentee after: Hunan Shanhe Mining and Rock Equipment Co.,Ltd. Country or region after: China Address before: No. 410, Xiangzhong Road, Changsha City, Hunan Province Patentee before: Sunward Intelligent Equipment Co.,Ltd. Country or region before: China |
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