CN202348254U - Logic control loop for rock drilling action electric fluid of hydraulic rock drilling rig - Google Patents
Logic control loop for rock drilling action electric fluid of hydraulic rock drilling rig Download PDFInfo
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- CN202348254U CN202348254U CN 201120459061 CN201120459061U CN202348254U CN 202348254 U CN202348254 U CN 202348254U CN 201120459061 CN201120459061 CN 201120459061 CN 201120459061 U CN201120459061 U CN 201120459061U CN 202348254 U CN202348254 U CN 202348254U
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Abstract
The utility model discloses a logic control loop for the rock drilling action electric fluid of a hydraulic rock drilling rig. A first pressure relay, a second pressure relay, a third pressure rely, a first reducing valve, a second reducing valve, a first solenoid directional valve, a second solenoid directional valve and an overflow valve or a speed control valve form rotation pressure to control two-stage pressure propulsion; meanwhile, low-pressure propulsion controls to impact the first logic control loop at low pressure; the third pressure relay, the second solenoid directional valve and the overflow valve or the speed control valve form propulsion pressure to control to impact a second logic control loop by two-stage impacting pressure; and the second pressure relay and the third solenoid directional valve form rotation pressure to control to propel and lift the logic control loop.
Description
Technical field
The utility model relates to a kind of hydraulic rock drilling machine rock drilling action control loop, relates in particular to the electric liquid loop control logic that a kind of hydraulic rock drilling machine is realized impact, revolution, three rock drilling key operations of propelling.
Background technology
Hydraulic rock drilling machine is because of it is efficient, energy-saving advantages is widely used in the rock drilling bore operation.Rock drilling bore operation operating mode is abominable, complicated, is embodied in to different rock kind and hardness, impacts, turns round, advances three rock drilling key operations to need good controllability; Complicated geologicals such as the solution cavity in the adaptation rock stratum, crack, interlayer impact, turn round, advance three rock drilling key operations and coupling thereof to possess automatic logic control, and automatic anti-aircraft is beaten, the anti-sticking pricker.
Small-sized digging machine total power throttle system serves as typical case's representative with Japanese KYB system, 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 the swash plate plunger variable pump, and the P3 pump is a gear pump, and the P4 pump is the 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 a composite throttling speed governing main valve.Based on the hydraulic rock drilling machine of small-sized digging machine platform and total power throttling hydraulic system exploitation,, at present domesticly successfully put out a new product and good application and development prospect are arranged because of advantages such as it are simple, flexible, efficient, energy-conservation.But its remain problem be rock drilling boring poor reliability, bad adaptability, bit shank fracture, drill steel fracture appear, bit freezing can't be used bottleneck through interlayer geology etc., seriously restrict the application and the popularization of this new product.Small-sized digging machine total power throttling hydraulic system applications is in the control hydraulic gate; Be merely able to realize impacting, turn round, advancing the independence and the unadjustable control of three rock drilling key operations, can not realize automatic coupling, the compound logic control of three rock drilling key operations.
The utility model content
To the problems referred to above; The purpose of the utility model provides a kind of hydraulic rock drilling machine rock drilling and moves electric liquid loop control logic; Realization impacts, turns round, advances the automatic coupling of three rock drilling key operations, compound logic to control to rock drilling machine, improves the compliance and the reliability of rock drilling bore operation.
For solving the problems of the technologies described above, the utility model provides a kind of hydraulic rock drilling machine rock drilling to move electric liquid loop control logic, comprises first pressure switch, second pressure switch, the 3rd pressure switch of adjustable pressure; First reducing valve; Second reducing valve; First solenoid operated directional valve; Second solenoid operated directional valve; The 3rd solenoid operated directional valve; Overflow valve or flow speed control valve.
Constitute rotation pressure by said first pressure switch, second pressure switch, the 3rd pressure switch, first reducing valve, second reducing valve, first solenoid operated directional valve, second solenoid operated directional valve, overflow valve or flow speed control valve and control that two stage pressures advance, low pressure advances control low pressure to impact first loop control logic simultaneously.Rotation pressure is introduced first loop control logic through the rotation pressure signal port; Advance oil-feed to introduce first loop control logic through advancing oil-in; By advancing oil-out to draw first loop control logic, impact by-pass shunt and introduce loop control logic by impacting the shunting oil-in.Said first pressure switch detects rotation pressure; The first pressure switch setting pressure is for being lower than hammer drill bit freezing critical pressure; Its output signal controlling first solenoid operated directional valve, first solenoid operated directional valve is controlled the open and close of first reducing valve and second reducing valve, and first reducing valve is the control of low pressure propelling pressure; Second reducing valve 3.2 is normal rock drilling propelling pressure control, thereby realizes that rotation pressure logic control two stage pressures advance; The 3rd pressure switch detects propelling pressure; The 3rd pressure switch setting pressure is higher than the first reducing valve setting pressure; And be lower than the second reducing valve setting pressure, the 3rd pressure switch output signal controlling second solenoid operated directional valve, second solenoid operated directional valve control overflow 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, thereby realization low pressure promotion logic control low pressure is impacted.
Constitute propelling pressure control two-stage surge second loop control logic by said the 3rd pressure switch, second solenoid operated directional valve, overflow valve or flow speed control valve; Advance load pressure to detect by the 3rd pressure switch; Its output signal controlling solenoid operated directional valve, solenoid operated directional valve control overflow valve or flow speed control valve, overflow valve or flow speed control valve are closed and are normal pressure rock drilling impact; Overflow valve or flow speed control valve are that low pressure is impacted when opening, thereby realize propelling pressure logic control two-stage surge; Surge is introduced second loop control logic by impacting the shunting oil-in.
Constituting rotation pressure control by said second pressure switch, the 3rd solenoid operated directional valve advances and carries loop control logic; Advance guide oil route guide oil oil-in to introduce loop control logic, draw loop control logic by the guide oil oil-out, rotation pressure is detected by second pressure switch; Second pressure switch output signal controlling the 3rd solenoid operated directional valve; When rotation pressure reaches setting value, realize advancing the switching-over of guide's oil circuit, rock drilling advances action to convert into and proposes action.
Further, said rotation pressure control advances the 3rd solenoid operated directional valve control of carrying the loop to advance guide's oil circuit or advance the working connection switching-over.
Said low pressure propelling/impact should be regarded as relative concept; Normal propelling/surge according to hammer drill manufacturer different rock-layers that recommendation adapts to; Be converted into the propelling/surge in the corresponding hydraulic system; Be regarded as normal propelling/surge, this moment, advanced state was regarded as normal propelling/impact conditions; With respect to normal propelling/impact,, be regarded as the described low pressure propelling/surge of this patent for adapting to other operating modes occur in the rock drilling process propelling/surge less than normal propelling/surge.
The beneficial effect that the utility model brings: the utility model is realized the automatic electric liquid logic control of propelling pressure control surge, and effectively air defense is beaten; The utility model realizes that rotation pressure control advances the automatic electric liquid logic control of proposing, effectively anti-bit freezing; The utility model realizes that automatic electric liquid logic control two stage pressures of rotation pressure advance, and low pressure advances control low pressure to impact simultaneously, improves through the ability of interlayer geology with the prevention bit freezing.
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, effective air defense is beaten, the anti-sticking pricker, thereby improves drilling efficiency, adaptive capacity and the reliability of hydraulic rock drilling machine.
Description of drawings
Fig. 1 is a present embodiment electricity liquid loop control logic structural representation;
Fig. 2 is that present embodiment electricity liquid loop control logic is used sketch map on hydraulic rock drilling machine.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the utility model is done further detailed explanation:
Attach a kind of hydraulic rock drilling machine rock drilling illustrated in figures 1 and 2 and move electric liquid loop control logic; Pressure switch 1.1, pressure switch 1.2, pressure switch 1.3 by adjustable pressure; Reducing valve 3.1, reducing valve 3.2; Solenoid operated directional valve 2, solenoid operated directional valve 4, overflow valve 5 formation rotation pressures are controlled the propelling of two stage pressures, low pressure advances control low pressure impact loop control logic simultaneously; Constitute propelling pressure control height two-stage surge loop control logic by pressure switch 1.3, solenoid operated directional valve 4, overflow valve 5; Constituting rotation pressure control by pressure switch 1.2, solenoid operated directional valve 6 advances and carries loop control logic.
Rotation pressure is introduced rock drilling by the revolution working connection through hydraulic fluid port R and is moved electric liquid logic control block, 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 the working connection bypass.Pressure switch 1.1 often leaves, and pressure is set at and is lower than revolution bit freezing critical pressure, and its output electric signal is through amplifying back control solenoid operated directional valve 2; Reducing valve 3.1 is the control of low pressure propelling pressure, and reducing valve 3.2 is normal rock drilling propelling pressure control; Pressure switch 1.3 often leaves, and its pressure is set and is lower than normal rock drilling propelling pressure control valve reducing valve 3.2 pressure set points, and is higher than low pressure propelling pressure control valve reducing valve 3.1 pressure set points, and its output electric signal is through amplifying back control solenoid operated directional valve 4; Overflow valve 5 opening pressures are set at hammer drill surge downscale protection value.When rotation pressure is lower than the setting value of pressure switch 1.1; No electric signal output, electric installation control solenoid operated directional valve 2 is in normal position, and reducing valve 3.2 works; Pressure switch 1.3; The output signal is in position, a left side through electric installation control solenoid operated directional valve 4, and overflow valve 5 cuts out, and propelling pressure and surge are in normal operation condition; When rotation pressure was higher than the pressure set points of pressure switch 1.1, pressure switch 1.1 got electric, and its output electric signal is amplified control solenoid operated directional valve 2 through electric installation and is in left; Reducing valve 3.1 is opened, while pressure switch 1.3 dead electricity, no electric signal output; Solenoid operated directional valve 4 is in right position; Overflow valve 5 is opened, and the rock drilling action is in the prevention bit freezing 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 are set and are lower than the pressure set points of normal rock drilling propelling pressure control valve reducing valve 3.2, and are higher than the pressure set points of low pressure propelling pressure control valve reducing valve 3.1.When advancing load pressure greater than the setting pressure of pressure switch 1.3, its output signal amplifies control solenoid operated directional valve 4 through electric installation and is in position, a left side, and overflow valve 5 cuts out, and surge is in normal rock drilling job state; When advancing load pressure to be lower than the setting pressure of pressure switch 1.3, no electric signal output, solenoid operated directional valve 4 is in right position, and overflow valve 5 is opened, and the rock drilling action is in the air defense that low pressure advances, low pressure is impacted and beats 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 to join the guide.Pressure switch 1.2 pressure are set at the threshold of hammer drill bit freezing rotation pressure.When the revolution load pressure is lower than the pressure set points of pressure switch 1.2, no signal output, solenoid operated directional valve 6 is in normal position, does not change to advance handle that main valve is advanced the control that joins, and the rock drilling action is in normal rock drilling job state; When the revolution load pressure is higher than the pressure set points of pressure switch 1.2; Its output electric signal is amplified 6 switching-overs of control solenoid operated directional valve through electric installation; Control advances the switching-over of guide's oil circuit, advances action to switch to and proposes action, and this logical action is anti-bit freezing state.
For the technical scheme of the alternative overflow valve of flow speed control valve, flow speed control valve substitutes the function that overflow valve realizes impacting by-pass shunt; Advance the working connection switching-over to substitute the technical scheme of propelling control guide oil circuit switching-over for control; Realize the function that the propelling action turns to through the oil circuit switching-over, for a person skilled in the art, on the technology contents that the present invention discloses; Need not to pay extra creative work; Can realize its function, and achieve the desired result, be not described in detail in this.
The utility model 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 being made all should be included within the protection domain of the utility model.
Claims (2)
1. electric liquid loop control logic is moved in the hydraulic rock drilling machine rock drilling, it is characterized in that: first pressure switch (1.1), second pressure switch (1.2), the 3rd pressure switch (1.3) that comprise adjustable pressure; First reducing valve (3.1); Second reducing valve (3.2); First solenoid operated directional valve (2); Second solenoid operated directional valve (4); The 3rd solenoid operated directional valve (6); Overflow valve or flow speed control valve (5),
Constitute rotation pressure by said first pressure switch (1.1), second pressure switch (1.2), the 3rd pressure switch (1.3), first reducing valve (3.1), second reducing valve (3.2), first solenoid operated directional valve (2), second solenoid operated directional valve (4), overflow valve or flow speed control valve (5) and control that two stage pressures advance, low pressure advances control low pressure to impact first loop control logic simultaneously; Said first pressure switch (1.1) detects rotation pressure; First pressure switch (1.1) setting pressure is for being lower than hammer drill bit freezing critical pressure; It exports signal controlling first solenoid operated directional valve (2), the open and close of first solenoid operated directional valve (2) control first reducing valve (3.1) and second reducing valve (3.2), and first reducing valve (3.1) is the control of low pressure propelling pressure; Second reducing valve (3.2) is normal rock drilling propelling pressure control, thereby realizes that rotation pressure logic control two stage pressures advance; The 3rd pressure switch (1.3) detects propelling pressure; The 3rd pressure switch (1.3) setting pressure is higher than first reducing valve (3.1) setting pressure; And be lower than second reducing valve (3.2) setting pressure, the 3rd pressure switch (1.3) output signal controlling second solenoid operated directional valve (4), second solenoid operated directional valve (4) control overflow valve or flow speed control valve (5); The overflow control that overflow valve or flow speed control valve (5) impact for low pressure, thus realize the impact of low pressure promotion logic control low pressure;
Constitute propelling pressure control two-stage surge second loop control logic by said the 3rd pressure switch (1.3), second solenoid operated directional valve (4), overflow valve or flow speed control valve (5); Advance load pressure to detect by the 3rd pressure switch (1.3); It exports signal controlling solenoid operated directional valve (4); Solenoid operated directional valve (4) control overflow valve or flow speed control valve (5); Overflow valve or flow speed control valve (5) are that normal rock drilling is impacted when closing, and overflow valve or flow speed control valve (5) are opened and be the low pressure impact, thereby realize propelling pressure logic control two-stage surge;
Advance and carry loop control logic by said second pressure switch (1.2), the control of the 3rd solenoid operated directional valve (6) formation rotation pressure; Advance guide oil route guide oil oil-in (Fa1, Fb1) to introduce loop control logic; (Fa2, Fb2) draws loop control logic by the guide oil oil-out; Rotation pressure is detected by second pressure switch (1.2), and second pressure switch (1.2) output signal controlling the 3rd solenoid operated directional valve (6) is when rotation pressure reaches setting value; Realize advancing the switching-over of guide's oil circuit, rock drilling advances action to convert into and proposes action.
2. electric liquid loop control logic is moved in said hydraulic rock drilling machine rock drilling according to claim 1, it is characterized in that: said rotation pressure control advances the 3rd solenoid operated directional valve (6) control of carrying the loop to advance guide's oil circuit or advance the working connection switching-over.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120459061 CN202348254U (en) | 2011-11-18 | 2011-11-18 | Logic control loop for rock drilling action electric fluid of hydraulic rock drilling rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120459061 CN202348254U (en) | 2011-11-18 | 2011-11-18 | Logic control loop for rock drilling action electric fluid of hydraulic rock drilling rig |
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| Publication Number | Publication Date |
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| CN202348254U true CN202348254U (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120459061 Expired - Fee Related CN202348254U (en) | 2011-11-18 | 2011-11-18 | Logic control loop for rock drilling action electric fluid of hydraulic rock drilling rig |
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| CN (1) | CN202348254U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425401A (en) * | 2011-11-18 | 2012-04-25 | 山河智能装备股份有限公司 | Electro-hydraulic logic control loop of rock drilling actions of hydraulic rock drilling machine |
-
2011
- 2011-11-18 CN CN 201120459061 patent/CN202348254U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425401A (en) * | 2011-11-18 | 2012-04-25 | 山河智能装备股份有限公司 | Electro-hydraulic logic control loop of rock drilling actions of hydraulic rock drilling machine |
| CN102425401B (en) * | 2011-11-18 | 2014-05-28 | 山河智能装备股份有限公司 | Electro-hydraulic logic control loop of rock drilling actions of hydraulic rock drilling machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20141118 |
|
| EXPY | Termination of patent right or utility model |