CN102561937A - Adjustable rock drilling control system of hydraulic rock drilling machine - Google Patents
Adjustable rock drilling control system of hydraulic rock drilling machine Download PDFInfo
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- CN102561937A CN102561937A CN2012100198051A CN201210019805A CN102561937A CN 102561937 A CN102561937 A CN 102561937A CN 2012100198051 A CN2012100198051 A CN 2012100198051A CN 201210019805 A CN201210019805 A CN 201210019805A CN 102561937 A CN102561937 A CN 102561937A
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Abstract
The invention relates to an adjustable rock drilling control system of a hydraulic rock drilling machine, which comprises a power mechanism, actuating mechanisms, a pilot-operated oil source block, a rock drilling control valve bank, a pilot-operated control block, a pilot-operated valve, a hydraulic control reversing valve bank and an overflow valve bank. The pilot-operated oil source block receives power oil provided by the power mechanism and provides the power oil for the pilot-operated valve, an electromagnetic reversing valve provides pilot-operated control signals for hydraulic control reversing valves of the rock drilling control valve bank and the hydraulic control reversing valve bank, and another electromagnetic reversing valve provides pilot-operated control signals for the hydraulic control reversing valves of the hydraulic control reversing valve bank; and pilot-operated control ports of the three hydraulic control reversing valves of the rock drilling control valve bank receive pilot-operated control signals from the pilot-operated oil source block, the pilot-operated control block and the pilot-operated valve, the actuating mechanisms are controlled respectively according to the control signals, pressure oil is guided for the actuating mechanisms according to respective oil consumptions of the actuating mechanisms by pressure compensation valves, and the rock drilling control valve bank provides the power oil for the hydraulic control reversing valves of the hydraulic control reversing valve bank. The adjustable rock drilling control system can remotely adjust propelling pressure, impact pressure and rotation pressure.
Description
Technical field
The present invention relates to a kind of rock drilling and control system, system is controlled in the adjustable rock drilling that is specifically related to a kind of hydraulic gate, belongs to the hydraulic control field.
Background technology
Hydraulic gate is widely used in mine excavation, and tunnel piercing and engineering construction field are also more and more for the Research of Automatic Control System of hammer drill both at home and abroad.Rock drilling control system is the important component part of hammer drill; And in the prior art, rock drilling control system is complicated and its automaticity is not high, and does not have long-range Regulation Control; Therefore can't realize that remote adjustment advances, impacts, turns round and change pricker pressure; Can't realize that also automatic anti-blocking bores, this makes troubles also for the operating personnel of hammer drill with regard to having caused the problem that rock drilling control system automation degree is not high and control accuracy is not high of existing hammer drill.
Summary of the invention
In view of this, system is controlled in the adjustable rock drilling that the invention provides a kind of hydraulic gate, but the propelling of remote adjustment executing agency, impact and rotating pressure and flow.
System is controlled in a kind of adjustable rock drilling of hydraulic gate, and rock drilling control system that this is adjustable comprises actuating unit, executing agency, guide's oil sources piece, rock drilling control valve group, guide's controll block, pilot valve, pilot operated directional control valve group, pressure-control valve group; Wherein actuating unit comprises the variable pump of three load-sensitive controls; Pressure port P, P1, P2 and load-sensitive control mouthful LS1, LS2 are arranged on the variable pump; According to the required pressure of load of load-sensitive control mouthful LS1, LS2 feedback, driving oil pump P1, P2 provide required pressure oil;
Guide's oil sources piece comprises three solenoid operated directional valve D1, D3, D4 and solenoid operated directional valve D5; Guide's oil sources piece is accepted the pressure oil that actuating unit provides; The decompression back provides controlled pressure oil for other valve groups as guide's oil sources; And solenoid operated directional valve D4 provides the guide control signal for the pilot operated directional control valve of rock drilling control valve group and pilot operated directional control valve group, and solenoid operated directional valve D3 provides the guide control signal for the pilot operated directional control valve of hydraulic control reversal valve group;
Rock drilling control valve group comprises LS pressure limiting valve, four AB mouth pressure slow supply oil valves of two overload overflow valves, three pilot operated directional control valves, three pressure-compensated valves, six restriction AB pressure; In case load pressure surpasses setting value; The overload overflow valve is opened, and lets the direct oil sump tank of a part of pump discharge; The pilot control opening of three pilot operated directional control valves is accepted the guide's control pressure signal from guide's oil sources piece, guide's controll block and pilot valve, and controls executing agency respectively according to this control signal, realizes impacting, advances and revolution; Pressure-compensated valve is load variations no matter, or other module parallel connections drive simultaneously, and it is constant that pressure compensator can be kept the pressure drop of main valve plug, the mutually noninterfere of working simultaneously; The LS pressure limiting valve parallel connection output of restriction AB pressure is carried out long-range Regulation Control through pilot operated directional control valve group and pressure-control valve group; Four AB mouth pressure slow supply oil valves are used for when overload or generation air gap, protecting each executing agency.
Guide's controll block comprises three solenoid operated directional valves, two overflow valves, a shuttle valve, the pressure oil that the acceptance of guide's controll block provides from pilot valve, and the guide is provided control signal for the pilot operated directional control valve of rock drilling control valve group and pilot operated directional control valve group;
Pilot valve comprises four relief pressure valve cartridges and a handle; The break-make of four relief pressure valve cartridges of pushing direction control of handle; And the angle control reducing valve output pressure size of handle skew; The pilot pressure oil that pilot valve is accepted to provide from guide's oil sources piece also provides pressure oil to guide's controll block, and the pilot operated directional control valve that pilot valve is returned rock drilling control valve group provides the guide control signal;
The pilot operated directional control valve group comprises six pilot operated directional control valves; The remote pressure oil that the winding of liquid control valve receives to provide from rock drilling control valve group also switches to the pressure-control valve group through logic and to carry out long-range pressure regulation, and the pilot operated directional control valve of liquid control valve group is accepted the guide's control signal from guide's oil sources piece, guide's controll block and pilot valve simultaneously;
The pressure-control valve group comprises four overflow valves, anti-sticking valve and sensor, and four overflow valves and anti-sticking valve can preestablish the pressure sizes values; The pressure-control valve winding receives the pressure oil that provides from liquid control valve group, and the anti-sticking valve is accepted the rotation pressure from executing agency's feedback; Pilot operated directional control valve group, pressure-control valve group and sensor combination reach remote adjustment or control propelling surge is big or small automatically.
Solenoid operated directional valve D1, D3, D4 are the two-position three way solenoid operated directional valve in described guide's oil sources piece, and solenoid operated directional valve D5 is the two-position four-way solenoid operated directional valve; A reducing valve J1 and a spring reset one way valve M connect on the oil circuit that the power mouth P of the working hole D1-P of solenoid operated directional valve D1 and actuating unit is communicated with; The working hole D1-A of solenoid operated directional valve D1 is communicated with the working hole D5-P of solenoid operated directional valve D5; The working hole D5-B of solenoid operated directional valve D5 is communicated with the oil-in of working hole D3-P, D4-P and the pilot valve of solenoid operated directional valve D3 and solenoid operated directional valve D4 respectively; The working hole D5-B of solenoid operated directional valve D5 respectively with pilot valve in reducing valve A2, B2, C2, the working hole A2-P of D2, B2-P, C2-P, D2-P be communicated with; The working hole D3-A of solenoid operated directional valve D3 respectively with the pilot operated directional control valve group in pilot control opening Y12-d and the pilot control opening Y17-d of pilot operated directional control valve Y17 of pilot operated directional control valve Y12 be communicated with, the working hole D4-A of solenoid operated directional valve D4 respectively with the pilot operated directional control valve group in pilot control opening Y19-d and the pilot control opening Y7-d1 of the pilot operated directional control valve Y7 in the rock drilling control valve group of pilot operated directional control valve Y19 be communicated with.
Described rock drilling control valve group comprises three seven logical pilot operated directional control valve Y7, three seven logical pilot operated directional control valve Y8, three seven logical pilot operated directional control valve Y11, precursor overflow valve E4, overload overflow valve E5, E12; LS pressure limiting valve E6, E7, E10, E11, E13, E14; Trimmer valve E8, E9, E15, E16, choke valve N18, N19, N20, N21, N22, N23, N28, N29, pressure-compensated valve G1, G2, G5; Fill valve Z5, Z6, Z11, Z12, shuttle valve X8, X9, X10, X11, X14, X15; Wherein:
The working hole Y7-A of hydraulicdirectional control valve Y7 and Y7-B respectively with working hole Y7-X1 and Y7-X2 in hydraulicdirectional control valve Y7 internal communication, working hole Y7-B is communicated with executing agency; Be communicated with outside secondary transfer behind series throttle N20, LS pressure limiting valve E6 and choke valve N21, the LS pressure limiting valve E7 respectively on working hole Y7-X1 and the Y7-X2 place oil circuit; The oil-in of shuttle valve X8 is connected between choke valve N20 and the LS pressure limiting valve E6; Another oil-in of shuttle valve X8 is connected between choke valve N21 and the LS pressure limiting valve E7; The oil-out of shuttle valve X8 is connected on the oil-in of shuttle valve X9; Pressure-compensated valve G1 is connected between the working hole Y7-P of power mouth P1 and hydraulicdirectional control valve Y7 of actuating unit; The control mouth of pressure-compensated valve G1 is connected between the oil-in of oil-out and shuttle valve X9 of shuttle valve X8, is communicated with the presser sensor control mouthful LS1 of actuating unit behind the oil-out place oil circuit serial connection choke valve N19 of shuttle valve X9;
The working hole Y8-A of hydraulicdirectional control valve Y8 and Y8-B respectively with working hole Y8-X1 and Y8-X2 in hydraulicdirectional control valve Y8 internal communication, working hole Y8-A and Y8-B are communicated with executing agency; Be serially connected between working hole Y8-A and the executing agency after Fill valve Z5 and the trimmer valve E8 parallel connection, be serially connected between working hole Y8-B and the executing agency after Fill valve Z6 and the trimmer valve E9 parallel connection; Be communicated with outside secondary transfer behind series throttle N22, LS pressure limiting valve E10 and choke valve N23, the LS pressure limiting valve E11 respectively on working hole Y8-X1 and the Y8-X2 place oil circuit; The oil-in of shuttle valve X10 is connected between choke valve N22 and the LS pressure limiting valve E10; Another oil-in of shuttle valve X10 is connected between choke valve N23 and the LS pressure limiting valve E11; The oil-out of shuttle valve X10 is connected on the oil-in of shuttle valve X11; Pressure-compensated valve G2 is connected between the working hole Y8-P of power mouth P1 and hydraulicdirectional control valve Y8 of actuating unit; The control mouth of pressure-compensated valve G2 is connected between the oil-in of oil-out and shuttle valve X11 of shuttle valve X10, and the oil-out of shuttle valve X11 is communicated with another oil-in of shuttle valve X9;
The working hole Y11-A of hydraulicdirectional control valve Y11 and Y11-B respectively with working hole Y11-X1 and Y11-X2 in hydraulicdirectional control valve Y11 internal communication, working hole Y11-A and Y11-B are communicated with executing agency; Be serially connected between working hole Y11-A and the executing agency after Fill valve Z11 and the trimmer valve E15 parallel connection, be serially connected between working hole Y11-B and the executing agency after Fill valve Z12 and the trimmer valve E16 parallel connection; Be communicated with outside secondary transfer behind series throttle N28, LS pressure limiting valve E13 and choke valve N29, the LS pressure limiting valve E14 respectively on working hole Y11-X1 and the Y11-X2 place oil circuit; The oil-in of shuttle valve X15 is connected between choke valve N28 and the overflow valve E13; Another oil-in of shuttle valve X15 is connected between choke valve N29 and the overflow valve E14; The oil-out of shuttle valve X15 is connected on the oil-in of shuttle valve X14; Pressure-compensated valve G5 is connected between the working hole Y11-P of power mouth P2 and hydraulicdirectional control valve Y11 of actuating unit; The control mouth of pressure-compensated valve G5 is connected between the oil-in of oil-out and shuttle valve X14 of shuttle valve X15, and the oil-out of shuttle valve X14 is communicated with the presser sensor of an actuating unit control mouthful LS2; The oil-in of overflow valve E12 is connected between pressure-compensated valve G5 and the power mouth P2, and the oil-out of overload overflow valve E12 is communicated with and is communicated with fuel tank with another oil-in of shuttle valve X11;
Be connected between one way pressure-reducing valve G1 and the power hydraulic fluid port P1 behind the oil-in serial connection choke valve N18 of precursor overflow valve E4, E5 is parallelly connected with precursor overflow valve E4 and choke valve N18 for the overload overflow valve, and the oil-out of precursor overflow valve E4 is communicated with fuel tank.
Four reversal valve A2, B2, C2, D2 of described pilot valve are and can automatically reset and reversal valve that the band ratio is regulated, when handle pushes away forward, and reversal valve C2 conducting; Handle when pusher, reversal valve B2 conducting; When handle pushes away left, reversal valve D2 conducting; When handle pushes away to the right, reversal valve A2 conducting; The working hole A2-P of reversal valve A2, B2, C2, D2, B2-P, C2-P, D2-P are communicated with the working hole D5-B of solenoid operated directional valve D5 respectively in the pilot valve; The pilot control opening Y11-d2 of pilot operated directional control valve Y11 in the working hole A2-A of reversal valve A2 and the rock drilling control valve group is communicated with; The working hole B2-A of reversal valve B2 is connected on the oil circuit that another oil-in of working hole D6-T and the shuttle valve X16 of solenoid operated directional valve D6 in guide's controll block is communicated with; The working hole C2-A of reversal valve C2 is connected on the oil circuit that the oil-in of working hole D6-P and the shuttle valve X16 of solenoid operated directional valve D6 is communicated with, and the working hole D2-A of reversal valve D2 is communicated with the working hole D9-of solenoid operated directional valve D9.
Described guide's controll block comprises overflow valve E17, overflow valve E18, two-position four-way solenoid operated directional valve D6, two-position four-way solenoid operated directional valve D7, bi-bit bi-pass solenoid operated directional valve D9 and shuttle valve X16;
Wherein be communicated with fuel tank behind the oil-out of the solenoid operated directional valve D9 place oil circuit series connection overflow valve E17; The working hole D6-P of solenoid operated directional valve D6 is communicated with the oil-in of shuttle valve X16; The working hole D6-Y of solenoid operated directional valve D6 is communicated with another oil-in of shuttle valve X16; The oil-out of shuttle valve X16 is communicated with the working hole D7-P of solenoid operated directional valve D7, is communicated with fuel tank behind the working hole D7-A place oil circuit series connection overflow valve E18 of solenoid operated directional valve D7; The working hole D9-P of solenoid operated directional valve D9 respectively with rock drilling control valve group in the pilot control opening Y16-d of pilot operated directional control valve Y16 of pilot control opening Y11-d1 and pilot operated directional control valve group of pilot operated directional control valve Y11 be communicated with; The pilot control opening Y8-d2 of pilot operated directional control valve Y8 in the working hole D6-A of solenoid operated directional valve D6 and the rock drilling control valve group is communicated with; The pilot control opening Y8-d1 of pilot operated directional control valve Y8 in the working hole D6-B of solenoid operated directional valve D6 and the rock drilling control valve group is communicated with, and the pilot control opening Y13-d of the pilot operated directional control valve Y13 in the working hole D7-B of solenoid operated directional valve D7 and the pilot operated directional control valve group is communicated with.
Described pilot operated directional control valve group comprises pilot operated directional control valve Y12, Y13, Y16, Y17, Y18, the Y19 of six two-position three ways; Wherein the working hole Y12-P of pilot operated directional control valve Y12 is communicated with the working hole Y13-S of pilot operated directional control valve Y13; The working hole Y16-S of pilot operated directional control valve Y16 is communicated with the working hole Y17-P of pilot operated directional control valve Y17; The working hole Y17-S of pilot operated directional control valve Y17 is communicated with the pilot control opening Y18-d of pilot operated directional control valve Y18, and the working hole Y18-P of pilot operated directional control valve Y18 is communicated with the working hole Y19-S of pilot operated directional control valve Y19;
The pressure-control valve group comprises 4 overflow valve E19, E20, E23, E24, anti-sticking valve E25; Wherein overflow valve E19, E20, E23, E24 parallel connection, its oil-out all is communicated with fuel tank; Overflow valve E19, E23 are made as little value, and overflow valve E20, E24 are made as big value;
The working hole Y16-P of pilot operated directional control valve Y16 in the pilot operated directional control valve group is connected between shuttle valve X8 and the overflow valve E7; Two oil-ins of shuttle valve X20 are connected on respectively between two oil-ins and LS pressure limiting valve E10, the E11 of shuttle valve X10, and the oil-out of shuttle valve X20 is communicated with the working hole Y13-P of pilot operated directional control valve Y13;
The oil return opening of pilot operated directional control valve Y16, Y17, Y18 is connected between the working hole Y8-A and executing agency of pilot operated directional control valve Y8 after being communicated with; The working hole Y12-S of pilot operated directional control valve Y12 is communicated with the working hole E25-A of overflow valve E19, anti-sticking valve E25; Serial connection overflow valve E20 between pilot operated directional control valve Y12 and the pilot operated directional control valve Y13; The working hole Y18-S of pilot operated directional control valve Y18 is communicated with overflow valve E23, serial connection overflow valve E24 between pilot operated directional control valve Y18 and the pilot operated directional control valve Y19; The working hole E25-T of anti-sticking valve E25 is connected between the working hole Y12-S and overflow valve E19 of pilot operated directional control valve Y12, and the working hole E25-B of anti-sticking valve E25 is connected between pilot operated directional control valve Y11 and the executing agency, and the E25-B mouth also is communicated with sensor.
Beneficial effect: (1) the present invention passes through the biasing all around of pilot valve upper handle, and can realize propelling, the impact of hammer drill and turn round various combinations actions with guide's controll block, has simplified the control operation program, the handled easily hand operation.
(2) the present invention adopts the control of pressure compensation and load-sensitive that the pressure oil of executing agency is carried out preferential gating parallel control; With pressure bigger a road feed back to variable pump load-sensitive control mouthful; Variable pump can be walked abreast according to loading demand pressure and flow are provided; Thereby avoid waste, reduced energy consumption.
(3) the present invention increases pilot operated directional control valve group and pressure-control valve group, but the pressure that remote adjustment executing agency advances, impacts, and can realize automatically that rotation pressure control advances, propelling pressure control is impacted and surge control advances.
Description of drawings
Fig. 1 controls the schematic diagram of system for the adjustable rock drilling of a kind of hydraulic gate of the present invention.
Fig. 2 is the schematic diagram of guide's controll block of the present invention.
Fig. 3 is the schematic diagram of rock drilling control valve group of the present invention.
Fig. 4 is the schematic diagram of guide's controll block of the present invention.
Fig. 5 is the schematic diagram of pilot valve of the present invention.
Fig. 6 is the schematic diagram of pilot operated directional control valve group of the present invention and pressure-control valve group.
Wherein, 1-guide's oil sources piece, 2-rock drilling main valve, 3-guide's controll block, 4-pilot valve, 6-pilot operated directional control valve group, 7-pressure-control valve group
The specific embodiment
Below in conjunction with the accompanying drawing embodiment that develops simultaneously, describe the present invention.
Shown in accompanying drawing 1; System is controlled in the adjustable rock drilling that the invention provides a kind of hydraulic gate, and rock drilling control system that this is adjustable comprises actuating unit, executing agency, guide's oil sources piece 1, rock drilling control valve group 2, guide's controll block 3, pilot valve 4, pilot operated directional control valve group 6, pressure-control valve group 7; Wherein actuating unit comprises the variable pump of three load-sensitive controls; Pressure port P, P1, P2 and load-sensitive control mouthful LS1, LS2 are arranged on the variable pump; According to the required pressure of load of load-sensitive control mouthful LS1, LS2 feedback, driving oil pump P1, P2 provide required pressure oil.
Shown in accompanying drawing 2; Guide's oil sources piece 1 comprises 4 solenoid operated directional valve D1, D3, D4, D5,1 reducing valve J1 and an one way valve M; Wherein solenoid operated directional valve D1, D3, D4 are the two-position three way solenoid operated directional valve, and solenoid operated directional valve D5 is the two-position four-way solenoid operated directional valve; A reducing valve J1 and a spring reset one way valve M connect on the oil circuit that the power mouth P of the working hole D1-P of solenoid operated directional valve D1 and actuating unit is communicated with; The working hole D1-A of solenoid operated directional valve D1 is communicated with the working hole D5-P of solenoid operated directional valve D5, and the working hole D5-B of solenoid operated directional valve D5 is communicated with working hole D3-P, the D4-P of solenoid operated directional valve D3 and solenoid operated directional valve D4 respectively.
Shown in accompanying drawing 3; Rock drilling control valve group 2 comprises three seven logical hydraulicdirectional control valve Y7, three seven logical hydraulicdirectional control valve Y8, three seven logical hydraulicdirectional control valve Y11, precursor overflow valve E4, overload overflow valve E5, E12; LS pressure limiting valve E6, E7, E10, E11, E13, E14; Trimmer valve E8, E9, E15, E16, choke valve N18, N19, N20, N21, N22, N23, N28, N29, pressure-compensated valve G1, G2, G5; Fill valve Z5, Z6, Z11, Z12, shuttle valve X8, X9, X10, X11, X14, X15; Wherein:
The working hole Y7-A of hydraulicdirectional control valve Y7 and Y7-B respectively with working hole Y7-X1 and Y7-X2 in hydraulicdirectional control valve Y7 internal communication, working hole Y7-B is communicated with executing agency; Be communicated with outside secondary transfer behind series throttle N20, LS pressure limiting valve E6 and choke valve N21, the LS pressure limiting valve E7 respectively on working hole Y7-X1 and the Y7-X2 place oil circuit; The oil-in of shuttle valve X8 is connected between choke valve N20 and the LS pressure limiting valve E6; Another oil-in of shuttle valve X8 is connected between choke valve N21 and the LS pressure limiting valve E7; The oil-out of shuttle valve X8 is connected on the oil-in of shuttle valve X9; Pressure-compensated valve G1 is connected between the working hole Y7-P of power mouth P1 and hydraulicdirectional control valve Y7 of actuating unit; The control mouth of pressure-compensated valve G1 is connected between the oil-in of oil-out and shuttle valve X9 of shuttle valve X8, is communicated with the presser sensor control mouthful LS1 of actuating unit behind the oil-out place oil circuit serial connection choke valve N19 of shuttle valve X9;
The working hole Y8-A of hydraulicdirectional control valve Y8 and Y8-B respectively with working hole Y8-X1 and Y8-X2 in hydraulicdirectional control valve Y8 internal communication, working hole Y8-A and Y8-B are communicated with executing agency; Be serially connected between working hole Y8-A and the executing agency after Fill valve Z5 and the trimmer valve E8 parallel connection, be serially connected between working hole Y8-B and the executing agency after Fill valve Z6 and the trimmer valve E9 parallel connection; Be communicated with outside secondary transfer behind series throttle N22, LS pressure limiting valve E10 and choke valve N23, the LS pressure limiting valve E11 respectively on working hole Y8-X1 and the Y8-X2 place oil circuit; The oil-in of shuttle valve X10 is connected between choke valve N22 and the LS pressure limiting valve E10; Another oil-in of shuttle valve X10 is connected between choke valve N23 and the LS pressure limiting valve E11; The oil-out of shuttle valve X10 is connected on the oil-in of shuttle valve X11; Pressure-compensated valve G2 is connected between the working hole Y8-P of power mouth P1 and hydraulicdirectional control valve Y8 of actuating unit; The control mouth of pressure-compensated valve G2 is connected between the oil-in of oil-out and shuttle valve X11 of shuttle valve X10, and the oil-out of shuttle valve X11 is communicated with another oil-in of shuttle valve X9;
The working hole Y11-A of hydraulicdirectional control valve Y11 and Y11-B respectively with working hole Y11-X1 and Y11-X2 in hydraulicdirectional control valve Y11 internal communication, working hole Y11-A and Y11-B are communicated with executing agency; Be serially connected between working hole Y11-A and the executing agency after Fill valve Z11 and the trimmer valve E15 parallel connection, be serially connected between working hole Y11-B and the executing agency after Fill valve Z12 and the trimmer valve E16 parallel connection; Be communicated with outside secondary transfer behind series throttle N28, LS pressure limiting valve E13 and choke valve N29, the LS pressure limiting valve E14 respectively on working hole Y11-X1 and the Y11-X2 place oil circuit; The oil-in of shuttle valve X15 is connected between choke valve N28 and the overflow valve E13; Another oil-in of shuttle valve X15 is connected between choke valve N29 and the overflow valve E14; The oil-out of shuttle valve X15 is connected on the oil-in of shuttle valve X14; Pressure-compensated valve G5 is connected between the working hole Y11-P of power mouth P2 and hydraulicdirectional control valve Y11 of actuating unit; The control mouth of pressure-compensated valve G5 is connected between the oil-in of oil-out and shuttle valve X14 of shuttle valve X15, and the oil-out of shuttle valve X14 is communicated with the presser sensor of an actuating unit control mouthful LS2; The oil-in of overflow valve E12 is connected between pressure-compensated valve G5 and the power mouth P2, and the oil-out of overload overflow valve E12 is communicated with and is communicated with fuel tank with another oil-in of shuttle valve X11;
Be connected between one way pressure-reducing valve G1 and the power hydraulic fluid port P1 behind the oil-in serial connection choke valve N18 of precursor overflow valve E4, E5 is parallelly connected with precursor overflow valve E4 and choke valve N18 for the overload overflow valve, and the oil-out of precursor overflow valve E4 is communicated with fuel tank.
Shown in accompanying drawing 4, guide's controll block 3 comprises overflow valve E17, overflow valve E18, two-position four-way solenoid operated directional valve D6, two-position four-way solenoid operated directional valve D7, bi-bit bi-pass solenoid operated directional valve D9 and shuttle valve X16; Wherein be communicated with fuel tank behind the oil-out of the solenoid operated directional valve D9 place oil circuit series connection overflow valve E17; The working hole D6-P of solenoid operated directional valve D6 is communicated with the oil-in of shuttle valve X16; The working hole D6-Y of solenoid operated directional valve D6 is communicated with another oil-in of shuttle valve X16; The oil-out of shuttle valve X16 is communicated with the working hole D7-P of solenoid operated directional valve D7, is communicated with fuel tank behind the working hole D7-A place oil circuit series connection overflow valve E18 of solenoid operated directional valve D7.
Shown in accompanying drawing 5, pilot valve 4 comprises that four can automatically reset and reversal valve A2, B2, C2, D2 and a handle that the band ratio is regulated, the break-make of four reversal valves of handle control, and when handle pushes away forward, reversal valve C2 conducting; Handle when pusher, reversal valve B2 conducting; When handle pushes away left, reversal valve D2 conducting; When handle pushes away to the right, reversal valve A2 conducting; The pushing direction of handle is controlled the break-make of corresponding reversal valve A2, B2, C2, D2, and controls the openings of sizes of the spool of reversal valve through deviation angle.
Shown in accompanying drawing 6, pilot operated directional control valve group 6 comprises pilot operated directional control valve Y12, Y13, Y16, Y17, Y18, the Y19 of six two-position three ways; Wherein the working hole Y12-T of pilot operated directional control valve Y12 is communicated with the working hole Y13-S of pilot operated directional control valve Y13; The working hole Y16-S of pilot operated directional control valve Y16 is communicated with the working hole Y17-P of pilot operated directional control valve Y17; The working hole Y17-S of pilot operated directional control valve Y17 is communicated with the pilot control opening Y18-d of pilot operated directional control valve Y18, and the working hole Y18-P of pilot operated directional control valve Y18 is communicated with the working hole Y19-S of pilot operated directional control valve Y19;
Pressure-control valve group 7 comprises 4 overflow valve E19, E20, E23, E24, anti-sticking valve E25; Wherein overflow valve E19, E20, E23, E24 parallel connection, its oil-out all is communicated with fuel tank; Overflow valve E19, E23 are made as little value, and overflow valve E20, E24 are made as big value;
The working hole Y12-S of pilot operated directional control valve Y12 is communicated with the working hole E25-A of overflow valve E19, anti-sticking valve E25; Serial connection overflow valve E20 between pilot operated directional control valve Y12 and the pilot operated directional control valve Y13; The working hole Y18-S of pilot operated directional control valve Y18 is communicated with overflow valve E23, serial connection overflow valve E24 between pilot operated directional control valve Y18 and the pilot operated directional control valve Y19; The working hole E25-T of anti-sticking valve E25 is connected between the working hole Y12-S and overflow valve E19 of pilot operated directional control valve Y12, and the working hole E25-B mouth of anti-sticking valve E25 is communicated with sensor.
Whole annexation: in guide's oil sources piece 1 the working hole D5-B of solenoid operated directional valve D5 respectively with pilot valve 4 in reversal valve A2, B2, C2, the working hole A2-P of D2, B2-P, C2-P, D2-P be communicated with; The working hole D3-A of solenoid operated directional valve D3 respectively with pilot operated directional control valve group 6 in pilot control opening Y12-d and the pilot control opening Y17-d of pilot operated directional control valve Y17 of pilot operated directional control valve Y12 be communicated with, the working hole D4-A of solenoid operated directional valve D4 respectively with pilot operated directional control valve group 6 in pilot control opening Y19-d and the pilot control opening Y7-d1 of the pilot operated directional control valve Y7 in the rock drilling control valve group 2 of pilot operated directional control valve Y19 be communicated with;
The pilot control opening Y11-d2 of pilot operated directional control valve Y11 in the pilot valve 4 in the working hole A2-A of reversal valve A2 and the rock drilling control valve group 2 is communicated with; The working hole B2-A of reversal valve B2 is connected between another oil-in of working hole D6-T and shuttle valve X16 of solenoid operated directional valve D6 in guide's controll block 3; The working hole C2-A of reversal valve C2 is connected between the oil-in of working hole D6-P and shuttle valve X16 of solenoid operated directional valve D6, and the working hole D2-A of reversal valve D2 is communicated with the working hole D9-of solenoid operated directional valve D9;
In guide's controll block 3 the working hole D9-P of solenoid operated directional valve D9 respectively with pilot operated directional control valve group 6 in pilot control opening Y16-d and the pilot control opening Y11-d1 of the pilot operated directional control valve Y11 in the rock drilling control valve group 2 of pilot operated directional control valve Y16 be communicated with; The pilot control opening Y8-d2 of pilot operated directional control valve Y8 in the working hole D6-A of solenoid operated directional valve D6 and the rock drilling control valve group 2 is communicated with; The pilot control opening Y8-d1 of pilot operated directional control valve Y8 in the working hole D6-B of solenoid operated directional valve D6 and the rock drilling control valve group 2 is communicated with, and the pilot control opening Y13-d of the pilot operated directional control valve Y13 in the working hole D7-B of solenoid operated directional valve D7 and the pilot operated directional control valve group 6 is communicated with;
The working hole Y16-P of pilot operated directional control valve Y16 in the pilot operated directional control valve group 6 is connected between shuttle valve X8 and the overflow valve E7; Two oil-ins of shuttle valve X20 are connected on respectively between two oil-ins and overflow valve E10, the E11 of shuttle valve X10, and the oil-out of shuttle valve X20 is communicated with the working hole Y13-P of pilot operated directional control valve Y13; The oil return opening of pilot operated directional control valve Y16, Y17, Y18 is connected between the working hole Y8-A and executing agency of pilot operated directional control valve Y8 after being communicated with, and the working hole E25-B of anti-sticking valve E25 is connected between pilot operated directional control valve Y11 and the executing agency.
The overall operation process: solenoid operated directional valve D1 and D5 get electric after, solenoid operated directional valve D1 conducting, solenoid operated directional valve D5 switching-over, pressure oil is flowed through reducing valve J1 decompression back as guide's oil sources from power mouth P.
When electromagnetic valve D4 and D3 simultaneously electric, solenoid operated directional valve D4 and D3 conducting, guide oil through electromagnetism D1, D5 after; Flow into solenoid operated directional valve D3 and D4, the pressure oil that flows out from solenoid operated directional valve D4 is divided into two-way, and one the tunnel gets into the d1 mouth of pilot operated directional control valve Y7 in the rock drilling control valve group 2; Drive pilot operated directional control valve Y7 switching-over; The pressure oil that is provided by actuating unit pressure port P1 gets into executing agency after through pilot operated directional control valve Y7, realizes that hammer drill impacts, and another road directly gets into the valve body of pilot operated directional control valve group 6; Drive pilot operated directional control valve Y19 switching-over, pilot operated directional control valve Y19 conducting; The pressure oil that flows out from solenoid operated directional valve D3 gets into the valve body of pilot operated directional control valve group 6, drives pilot operated directional control valve Y17 switching-over, and pilot operated directional control valve Y17 breaks off the control oil pressure of pilot operated directional control valve Y18; Pilot operated directional control valve Y18 conducting; The pressure oil that the conducting of pilot operated directional control valve Y7 simultaneously makes load feedback gets into the valve body of pilot operated directional control valve group 6 after through choke valve N21, A mouth LS pressure limiting valve E7, and gives pressure-compensated valve G1 through shuttle valve X8 with pressure feedback through the pressure oil of choke valve N21, and remote adjustment pressure oil is divided into two-way after through pilot operated directional control valve group Y19; One tunnel process overflow valve E24 flows back to fuel tank; Another road is flow through pilot operated directional control valve group Y18 and is flowed back to fuel tank through E23, because of E24, E23 are connected in parallel, and feeds back to pressure-compensated valve G1 because of E23 is provided with little value; Its oil pressure is the setting value of E23, thereby realizes the little impact of hammer drill.
When solenoid operated directional valve D3 must not electricity, solenoid operated directional valve D4 gets when electric; Solenoid operated directional valve D4 conducting; The pressure oil that flows out from solenoid operated directional valve D4 is divided into two-way, and one the tunnel gets into the pilot control opening of pilot operated directional control valve Y7 in the rock drilling control valve group 2, drives pilot operated directional control valve Y7 switching-over; Pilot operated directional control valve Y7 conducting; The pressure oil that is provided by actuating unit pressure port P1 gets into executing agency after through pilot operated directional control valve Y7, realizes that hammer drill impacts, and the pressure oil of load feedback gets into the valve body of pilot operated directional control valve group 6 after through choke valve N21, LS pressure limiting valve E7 simultaneously; And the pressure oil through choke valve N21 is given pressure-compensated valve G1 through shuttle valve X8 with pressure feedback, also through shuttle valve X9 control pump; Another road gets into the valve body of pilot operated directional control valve group 6, drives pilot operated directional control valve Y19 switching-over, pilot operated directional control valve Y19 conducting, and pressure oil also passes through pilot operated directional control valve Y16, Y17 simultaneously; Control pilot operated directional control valve Y18 switching-over makes its disconnection, and pressure oil only flows back to fuel tank through overflow valve E24 through behind the pilot operated directional control valve Y19, feeds back to pressure compensation G1 because of E24 is provided with big value, and its oil pressure is the E24 setting value, thereby realizes the hammer drill large impact.
When handle pushes away forward, reversal valve C2 conducting, the pilot pressure oil of exporting from solenoid operated directional valve D5 enters into pilot valve 4 valve bodies; Behind pilot valve C2, enter into the valve body of guide's controll block 3 and be divided into two-way, the one tunnel through entering into the valve body of rock drilling main valve 2 behind the solenoid operated directional valve D6; Drive pilot operated directional control valve Y8 switching-over; Pilot operated directional control valve Y8 conducting, the pressure oil that is provided by actuating unit power mouth P1 get into executing agency after through pilot operated directional control valve Y8, realize that hammer drill advances; Through choke valve N23, LS pressure limiting valve E11 and through getting into the valve body of pilot operated directional control valve group 6 behind the shuttle valve X20, and give pressure-compensated valve G1 through shuttle valve X10 with pressure feedback according to the pressure oil of load feedback, also through shuttle valve X11 control pump through the pressure oil of N23; Get into the pressure oil of pilot operated directional control valve group 6 valve bodies, behind pilot operated directional control valve Y13, get into the valve body of pressure-control valve group 7, flow back to fuel tank behind the process overflow valve E20, but overflow valve E20 controlled pressure size is controlled propelling oil circuit pressure size; Another road guide oil is through shuttle valve X16, solenoid operated directional valve D7, overflow valve E18, and the adjusting of E18 can be controlled pilot operated directional control valve Y8 proportional valve spool openings of sizes, can control the pilot pressure size, the flow-control thereby the realization hammer drill advances at a slow speed.
Solenoid operated directional valve D7 gets when electric, its spool switching-over, and pressure oil flows out the valve body that the back gets into pilot operated directional control valve 6 from solenoid operated directional valve D7; Drive pilot operated directional control valve Y13 switching-over; Pilot operated directional control valve Y13 breaks off, and at this moment propelling pressure reaches maximum by LS pressure limiting valve E11 setting; It is maximum that thereby solenoid operated directional valve D7 breaks off the adjusting realization propelling flow that passes through E18 simultaneously, and hammer drill advances fast.
When handle during to pusher, pilot valve B2 conducting, the pressure oil that flows out from solenoid operated directional valve D5 enters into pilot valve 4 valve bodies; Behind reversal valve B2, enter into the valve body of guide's controll block 3 and be divided into two-way, the one tunnel through entering into the valve body of rock drilling main valve 2 behind the solenoid operated directional valve D6; Drive pilot operated directional control valve Y8 switching-over; Pilot operated directional control valve Y8 conducting, the pressure oil that is provided by actuating unit pressure port P1 get into executing agency after through pilot operated directional control valve Y8, realize that hammer drill falls back; Simultaneously pressure oil is through choke valve N22, LS pressure limiting valve E10 and through getting into the valve body of pilot operated directional control valve group 6 behind the shuttle valve X20, and gives pressure-compensated valve G1 through shuttle valve X10 with pressure feedback through the pressure oil of choke valve N22, also removes control pump through shuttle valve X11; Get into the Long-distance Control pressure oil of pilot operated directional control valve group 6 valve bodies, behind pilot operated directional control valve Y13, get into the valve body of pressure-control valve group 7, through flowing back to fuel tank behind the overflow valve E20, overflow valve E20 can control G2 oil circuit pressure size; Flow back to fuel tank behind another road process shuttle valve X16, solenoid operated directional valve D7, the overflow valve E18, can control the pilot operated directional control valve openings of sizes, thereby realize that hammer drill falls back at a slow speed.
Solenoid operated directional valve D7 gets when electric, its spool switching-over, and pressure oil flows out the valve body that the back gets into pilot operated directional control valve 6 from solenoid operated directional valve D7; Drive pilot operated directional control valve Y13 switching-over; Pilot operated directional control valve Y13 breaks off, and at this moment propelling pressure reaches maximum by LS pressure limiting valve E10 setting; It is maximum that thereby solenoid operated directional valve D7 breaks off the adjusting realization propelling flow that passes through overflow valve E18 simultaneously, and hammer drill is retreated fast.
When handle pushes away left; Pilot valve D2 conducting; Enter into pilot valve 4 valve bodies from the pilot pressure oil of solenoid operated directional valve D5 output, behind reversal valve D2, enter in the valve body of guide's controll block 3 and be divided into two-way; One tunnel process solenoid operated directional valve D9, overflow valve E17 flow back to fuel tank, regulate the revolution flow thereby control Y11 valve core opening size through the adjusting of overflow valve E17; Another road directly is divided into two-way after guide's controll block 3 flows out; One the road enters into the valve body of rock drilling main valve 2; Drive pilot operated directional control valve Y11 switching-over; Pilot operated directional control valve Y11 conducting, the pressure oil that is provided by actuating unit pressure port P2 get into executing agency after through pilot operated directional control valve Y11, realize the hammer drill revolution; Load feedback pressure oil is given pressure-compensated valve G5 through shuttle valve X15 with pressure feedback through behind the N28 simultaneously, and also through shuttle valve X14 control pump, another road gets into pilot operated directional control valve group 6, drives pilot operated directional control valve Y16 switching-over.
When handle pushes away to the right, reversal valve A2 conducting, the pressure oil that flows out from solenoid operated directional valve D5 enters into pilot valve 4 valve bodies; Behind reversal valve A2; Enter into the valve body of rock drilling main valve 2, drive pilot operated directional control valve Y11 switching-over, pilot operated directional control valve Y11 conducting; The pressure oil that is provided by actuating unit power mouth P2 gets into executing agency after through pilot operated directional control valve Y11, realizes the hammer drill counter-rotating; Behind the pressure oil process choke valve N29, give pressure-compensated valve G5 through shuttle valve X15 with pressure feedback, simultaneously also through shuttle valve X14 control pump.
During normal rock drilling: solenoid operated directional valve D3 must not electricity, solenoid operated directional valve D4 gets electric and pilot valve C2, D2 conducting simultaneously;
Solenoid operated directional valve D4 conducting; The pressure oil that flows out from solenoid operated directional valve D4 is divided into two-way, and one the tunnel gets into the pilot control opening of pilot operated directional control valve Y7 in the rock drilling control valve group 2, drives pilot operated directional control valve Y7 switching-over; Pilot operated directional control valve Y7 conducting; The pressure oil that is provided by actuating unit pressure port P1 gets into executing agency after through pilot operated directional control valve Y7, realizes the hammer drill percussion action, and load feedback pressure oil gets into the valve body of pilot operated directional control valve group 6 after through choke valve N21, LS pressure limiting valve E7 simultaneously; And the pressure oil through choke valve N21 is given pressure-compensated valve G1 through shuttle valve X8 with pressure feedback, also through shuttle valve X9 control pump; Another road gets into the valve body of pilot operated directional control valve group 6, drives the Y19 switching-over.
The pressure oil that flows out from reversal valve C2 enters into the valve body of guide's controll block 3 and is divided into two-way; One the tunnel through entering into the valve body of rock drilling main valve 2 behind the solenoid operated directional valve D6; Drive pilot operated directional control valve Y8 switching-over; Pilot operated directional control valve Y8 conducting, the pressure oil that is provided by actuating unit pressure port P1 get into executing agency after through pilot operated directional control valve Y8, realize that hammer drill advances; Load feedback pressure oil passes through choke valve N23, LS pressure limiting valve E11 also through getting into the valve body of pilot operated directional control valve group 6 behind the shuttle valve X20 simultaneously; Through flowing into overflow valve E20 behind the pilot operated directional control valve Y13; The scalable propelling pressure; And the pressure oil through choke valve N23 is given pressure-compensated valve G1 through shuttle valve X10 with pressure feedback, also through shuttle valve X11 control pump; Flow back to fuel tank behind another road process shuttle valve X16, solenoid operated directional valve D7, the overflow valve E18, regulate advancing pilot operated directional control valve Y8 spool flow.
The pressure oil that flows out from reversal valve D2 enters into the valve body of guide's controll block 3 and is divided into two-way, and one tunnel process solenoid operated directional valve D9, overflow valve E17 flow back to fuel tank, thereby regulates pilot operated directional control valve Y11 valve core opening size control revolution flow; Another road directly is divided into two-way after guide's controll block 3 flows out; One the road enters into the valve body of rock drilling main valve 2; Drive pilot operated directional control valve Y11 switching-over; Pilot operated directional control valve Y11 conducting, the pressure oil that is provided by actuating unit pressure port P1 get into executing agency after through pilot operated directional control valve Y11, realize the hammer drill revolution; Load feedback pressure oil is given pressure-compensated valve G5 through shuttle valve X15 with pressure feedback through behind the N28 simultaneously, also through shuttle valve X14 control pump; Another road gets into the valve body of pilot operated directional control valve group 6, drives the Y16 switching-over.
When pressure oil drives pilot operated directional control valve Y16 and pilot operated directional control valve Y19 switching-over; The T-S conducting of pilot operated directional control valve Y16; The P-S conducting of pilot operated directional control valve Y19, the propelling pressure oil that advances executing agency to feed back gets into the working hole Y16-T of pilot operated directional control valve Y16, through getting into the pilot control opening Y18-d of pilot operated directional control valve Y18 behind the pilot operated directional control valve Y17; Pilot operated directional control valve Y18 one sets the pilot operated directional control valve of switching-over pressure only; When propelling pressure during greater than the Y18 setting value Y18P-S break off, the pressure oil through pilot operated directional control valve Y19 is realized remote adjustment large impact controlled pressure directly through flowing back to fuel tank behind the overflow valve E24; Another road gets into pilot operated directional control valve Y18 to E23, realizes the little impact controlled pressure of remote adjustment; When propelling pressure less than its setting value, the do not commutate P-S conducting of Y18 of pilot operated directional control valve Y18, the pressure oil through pilot operated directional control valve Y19 is divided into two-way; One the tunnel directly realizes remote adjustment large impact controlled pressure through overflow valve E24; Another road gets into pilot operated directional control valve Y18 to E23, realizes the little impact controlled pressure of remote adjustment, because of E23, E24 conducting simultaneously get the small value; Thereby realize little impact, promptly propelling pressure is controlled impact.
Advance remote adjustment pressure E19, E20 to be connected in series anti-sticking valve A, T mouth again simultaneously; The setting value that surpasses anti-sticking valve E25 when the rotation pressure of rotary power unit feedback; Behind the Long-distance Control pressure oil process anti-sticking valve E25 through pilot operated directional control valve Y13; E25 is a servo valve because of the anti-sticking valve, promptly change along with the variation of rotation pressure realizes propelling pressure, thereby realizing that hammer drill is servo advances; When the setting value of feedback rotation pressure less than anti-sticking valve E25, pressure oil flows back to fuel tank through overflow valve E20, thereby realizes normally advancing, i.e. rotation pressure control advances.Surge also reduces when propelling pressure is lower than the Y18 setting value.
When propelling pressure reduces; Surge reduces the bit freezing problem that still can't resolve, and promptly rotation pressure constantly raises and reaches the sensor settings value, and solenoid operated directional valve D6, D3, D4 give; Make to advance to transfer to and retreat; The revolution feedback pressure descends, and is brought down below the sensor settings value, at this moment solenoid operated directional valve D6, D3 outage; During bit freezing, advance to transfer to retreating to prevent that high pressure is empty and beat, and change into little impact automatically;
If need not prevent the bit freezing function, E25 is transferred to maximum pressure value with the anti-sticking valve, and it is not worked.
Claims (6)
1. system is controlled in the adjustable rock drilling of a hydraulic gate; It is characterized in that rock drilling control system that this is adjustable comprises actuating unit, executing agency, guide's oil sources piece (1), rock drilling control valve group (2), guide's controll block (3), pilot valve (4), pilot operated directional control valve group (6), pressure-control valve group (7);
Wherein actuating unit comprises the variable pump of three load-sensitive controls; Pressure hydraulic fluid port P, P1, P2 and load-sensitive control mouthful LS1, LS2 are arranged on the variable pump; According to the required pressure of load of a presser sensor control mouthful LS1, LS2 feedback, and pressure oil is provided by power mouth P, P1, P2;
Guide's oil sources piece (1) comprises three solenoid operated directional valve D1, D3, D4 and solenoid operated directional valve D5; Guide's oil sources piece (1) is accepted the pressure oil that actuating unit provides; The decompression back provides controlled pressure oil for other valve group as guide's oil sources; And solenoid operated directional valve D4 provides the guide control signal for the pilot operated directional control valve of rock drilling control valve group (2) and pilot operated directional control valve group (6), and solenoid operated directional valve D3 provides the guide control signal for the pilot operated directional control valve of hydraulic control reversal valve group (6);
Rock drilling control valve group (2) comprises LS pressure limiting valve, four AB mouth pressure slow supply oil valves of two overload overflow valves, three pilot operated directional control valves, three pressure-compensated valves, six restriction AB pressure; In case load pressure surpasses setting value, the overload overflow valve is opened, and lets the direct oil sump tank of a part of pump discharge; The pilot control opening of three pilot operated directional control valves is accepted the guide's control pressure signal from guide's oil sources piece (1), guide's controll block (3) and pilot valve (4), and controls executing agency respectively according to this control signal, realizes impacting, advances and revolution; Pressure-compensated valve is load variations no matter, or other module parallel connections drive simultaneously, and it is constant that pressure compensator can be kept the pressure drop of main valve plug, the mutually noninterfere of working simultaneously; The LS pressure limiting valve parallel connection output of restriction AB pressure is carried out long-range Regulation Control through pilot operated directional control valve group (6) and pressure-control valve group (7); Four AB mouth pressure slow supply oil valves are used for when overload or generation gas air gap, protecting each executing agency;
Guide's controll block (3) comprises three solenoid operated directional valves, two overflow valves, a shuttle valve; The pilot pressure oil that guide's controll block (3) acceptance provides from pilot valve (4), and the guide is provided controlled pressure for the pilot operated directional control valve of rock drilling control valve group (2) and pilot operated directional control valve group (6);
Pilot valve (4) comprises four spools and a handle; The pilot pressure of four spools of pushing direction control of handle; And the output pressure size of the angle control spool of handle skew; The pilot pressure oil that pilot valve (4) is accepted to provide from guide's oil sources piece (1) also provides pressure oil to guide's controll block (3), and the pilot operated directional control valve of returning rock drilling control valve group (2) provides the guide control signal;
Pilot operated directional control valve group (6) comprises six pilot operated directional control valves; The remote pressure oil that liquid control valve group (6) is accepted to provide from rock drilling control valve group (2) also switches to pressure-control valve group (7) through logic and to carry out long-range pressure regulation, and the pilot operated directional control valve of liquid control valve group (6) is accepted the guide's control signal from guide's oil sources piece (1), guide's controll block (3) and pilot valve (4) simultaneously; Pressure-control valve group (7) comprises four overflow valves, anti-sticking valve and sensor, and four overflow valves preestablish sizes values; The pressure oil that pressure-control valve group (7) acceptance provides from liquid control valve group (6); The anti-sticking valve is accepted the rotation pressure from executing agency's feedback, and pilot operated directional control valve group (6) and pressure-control valve group (7) and sensor combination reach remote adjustment or control automatically and advance the surge size.
2. system is controlled in the adjustable rock drilling of a kind of hydraulic gate as claimed in claim 1; It is characterized in that; Solenoid operated directional valve D1, D3, D4 are the two-position three way solenoid operated directional valve in described guide's oil sources piece (1), and solenoid operated directional valve D5 is the two-position four-way solenoid operated directional valve; A reducing valve J1 and a spring reset one way valve M connect on the oil circuit that the power mouth P of the working hole D1-P of solenoid operated directional valve D1 and actuating unit is communicated with; The working hole D1-A of solenoid operated directional valve D1 is communicated with the working hole D5-P of solenoid operated directional valve D5; The working hole D5-B of solenoid operated directional valve D5 is communicated with the oil-in of working hole D3-P, D4-P and the pilot valve (4) of solenoid operated directional valve D3 and solenoid operated directional valve D4 respectively; The working hole D5-B of solenoid operated directional valve D5 is communicated with the middle reversal valve A2 of pilot valve (4), B2, C2, the working hole A2-P of D2, B2-P, C2-P, D2-P respectively; The working hole D3-A of solenoid operated directional valve D3 respectively with pilot operated directional control valve group (6) in pilot control opening Y12-d and the pilot control opening Y17-d of pilot operated directional control valve Y17 of pilot operated directional control valve Y12 be communicated with, the working hole D4-A of solenoid operated directional valve D4 respectively with pilot operated directional control valve group (6) in pilot control opening Y19-d and the pilot control opening Y7-d1 of the pilot operated directional control valve Y7 in the rock drilling control valve group (2) of pilot operated directional control valve Y19 be communicated with.
3. system is controlled in the adjustable rock drilling of a kind of hydraulic gate as claimed in claim 1, it is characterized in that, described rock drilling control valve group (2) comprises three seven logical hydraulicdirectional control valve Y7, three seven logical hydraulicdirectional control valve Y8, three seven logical hydraulicdirectional control valve Y11; Precursor overflow valve E4; Overload overflow valve E5, E12, LS pressure limiting valve E6, E7, E10, E11, E13, E14, trimmer valve E8, E9, E15, E16; Choke valve N18, N19, N20, N21, N22, N23, N28, N29; Pressure-compensated valve G1, G2, G5, Fill valve Z5, Z6, Z11, Z12, shuttle valve X8, X9, X10, X11, X14, X15; Wherein:
The working hole Y7-A of hydraulicdirectional control valve Y7 and Y7-B respectively with working hole Y7-X1 and Y7-X2 in hydraulicdirectional control valve Y7 internal communication, working hole Y7-B is communicated with executing agency; Be communicated with outside secondary transfer behind series throttle N20, LS pressure limiting valve E6 and choke valve N21, the LS pressure limiting valve E7 respectively on working hole Y7-X1 and the Y7-X2 place oil circuit; The oil-in of shuttle valve X8 is connected between choke valve N20 and the LS pressure limiting valve E6; Another oil-in of shuttle valve X8 is connected between choke valve N21 and the LS pressure limiting valve E7; The oil-out of shuttle valve X8 is connected on the oil-in of shuttle valve X9; Pressure-compensated valve G1 is connected between the working hole Y7-P of power mouth P1 and hydraulicdirectional control valve Y7 of actuating unit; The control mouth of pressure-compensated valve G1 is connected between the oil-in of oil-out and shuttle valve X9 of shuttle valve X8, is communicated with the presser sensor control mouthful LS1 of actuating unit behind the oil-out place oil circuit serial connection choke valve N19 of shuttle valve X9;
The working hole Y8-A of hydraulicdirectional control valve Y8 and Y8-B respectively with working hole Y8-X1 and Y8-X2 in hydraulicdirectional control valve Y8 internal communication, working hole Y8-A and Y8-B are communicated with executing agency; Be serially connected between working hole Y8-A and the executing agency after Fill valve Z5 and the trimmer valve E8 parallel connection, be serially connected between working hole Y8-B and the executing agency after Fill valve Z6 and the trimmer valve E9 parallel connection; Be communicated with outside secondary transfer behind series throttle N22, LS pressure limiting valve E10 and choke valve N23, the LS pressure limiting valve E11 respectively on working hole Y8-X1 and the Y8-X2 place oil circuit; The oil-in of shuttle valve X10 is connected between choke valve N22 and the LS pressure limiting valve E10; Another oil-in of shuttle valve X10 is connected between choke valve N23 and the LS pressure limiting valve E11; The oil-out of shuttle valve X10 is connected on the oil-in of shuttle valve X11; Pressure-compensated valve G2 is connected between the working hole Y8-P of power mouth P1 and hydraulicdirectional control valve Y8 of actuating unit; The control mouth of pressure-compensated valve G2 is connected between the oil-in of oil-out and shuttle valve X11 of shuttle valve X10, and the oil-out of shuttle valve X11 is communicated with another oil-in of shuttle valve X9;
The working hole Y11-A of hydraulicdirectional control valve Y11 and Y11-B respectively with working hole Y11-X1 and Y11-X2 in hydraulicdirectional control valve Y11 internal communication, working hole Y11-A and Y11-B are communicated with executing agency; Be serially connected between working hole Y11-A and the executing agency after Fill valve Z11 and the trimmer valve E15 parallel connection, be serially connected between working hole Y11-B and the executing agency after Fill valve Z12 and the trimmer valve E16 parallel connection; Be communicated with outside secondary transfer behind series throttle N28, LS pressure limiting valve E13 and choke valve N29, the LS pressure limiting valve E14 respectively on working hole Y11-X1 and the Y11-X2 place oil circuit; The oil-in of shuttle valve X15 is connected between choke valve N28 and the overflow valve E13; Another oil-in of shuttle valve X15 is connected between choke valve N29 and the overflow valve E14; The oil-out of shuttle valve X15 is connected on the oil-in of shuttle valve X14; Pressure-compensated valve G5 is connected between the working hole Y11-P of power mouth P2 and hydraulicdirectional control valve Y11 of actuating unit; The control mouth of pressure-compensated valve G5 is connected between the oil-in of oil-out and shuttle valve X14 of shuttle valve X15, and the oil-out of shuttle valve X14 is communicated with the presser sensor of an actuating unit control mouthful LS2; The oil-in of overflow valve E12 is connected between pressure-compensated valve G5 and the power mouth P2, and the oil-out of overload overflow valve E12 is communicated with and is communicated with fuel tank with another oil-in of shuttle valve X11;
Be connected between one way pressure-reducing valve G1 and the power hydraulic fluid port P1 behind the oil-in serial connection choke valve N18 of precursor overflow valve E4, E5 is parallelly connected with precursor overflow valve E4 and choke valve N18 for the overload overflow valve, and the oil-out of precursor overflow valve E4 is communicated with fuel tank.
4. system is controlled in the adjustable rock drilling of a kind of hydraulic gate as claimed in claim 1; It is characterized in that; Four reversal valve A2, B2, C2, D2 of described pilot valve (4) are and can automatically reset and reversal valve that the band ratio is regulated, when handle pushes away forward, and reversal valve C2 conducting; Handle when pusher, reversal valve B2 conducting; When handle pushes away left, reversal valve D2 conducting; When handle pushes away to the right, reversal valve A2 conducting; Reversal valve A2, B2, C2, the working hole A2-P of D2, B2-P, C2-P, D2-P are communicated with the working hole D5-B of solenoid operated directional valve D5 respectively in the pilot valve (4); The pilot control opening Y11-d2 of pilot operated directional control valve Y11 in the working hole A2-A of reversal valve A2 and the rock drilling control valve group (2) is communicated with; The working hole B2-A of reversal valve B2 is connected on the oil circuit of another oil-in connection of working hole D6-T and shuttle valve X16 of solenoid operated directional valve D6 in guide's controll block (3); The working hole C2-A of reversal valve C2 is connected on the oil circuit that the oil-in of working hole D6-P and the shuttle valve X16 of solenoid operated directional valve D6 is communicated with, and the working hole D2-A of reversal valve D2 is communicated with the working hole D9-of solenoid operated directional valve D9.
5. system is controlled in the adjustable rock drilling of a kind of hydraulic gate as claimed in claim 1; It is characterized in that described guide's controll block (3) comprises overflow valve E17, overflow valve E18, two-position four-way solenoid operated directional valve D6, two-position four-way solenoid operated directional valve D7, bi-bit bi-pass solenoid operated directional valve D9 and shuttle valve X16;
Wherein be communicated with fuel tank behind the oil-out of the solenoid operated directional valve D9 place oil circuit series connection overflow valve E17; The working hole D6-P of solenoid operated directional valve D6 is communicated with the oil-in of shuttle valve X16; The working hole D6-Y of solenoid operated directional valve D6 is communicated with another oil-in of shuttle valve X16; The oil-out of shuttle valve X16 is communicated with the working hole D7-P of solenoid operated directional valve D7, is communicated with fuel tank behind the working hole D7-A place oil circuit series connection overflow valve E18 of solenoid operated directional valve D7; The working hole D9-P of solenoid operated directional valve D9 respectively with rock drilling control valve group (2) in the pilot control opening Y16-d of pilot operated directional control valve Y16 of pilot control opening Y11-d1 and pilot operated directional control valve group (6) of pilot operated directional control valve Y11 be communicated with; The pilot control opening Y8-d2 of pilot operated directional control valve Y8 in the working hole D6-A of solenoid operated directional valve D6 and the rock drilling control valve group (2) is communicated with; The pilot control opening Y8-d1 of pilot operated directional control valve Y8 in the working hole D6-B of solenoid operated directional valve D6 and the rock drilling control valve group (2) is communicated with, and the pilot control opening Y13-d of the pilot operated directional control valve Y13 in the working hole D7-B of solenoid operated directional valve D7 and the pilot operated directional control valve group (6) is communicated with.
6. system is controlled in the adjustable rock drilling of a kind of hydraulic gate as claimed in claim 1, it is characterized in that described pilot operated directional control valve group (6) comprises pilot operated directional control valve Y12, Y13, Y16, Y17, Y18, the Y19 of six two-position three ways; Wherein the working hole Y12-P of pilot operated directional control valve Y12 is communicated with the working hole Y13-S of pilot operated directional control valve Y13; The working hole Y16-S of pilot operated directional control valve Y16 is communicated with the working hole Y17-P of pilot operated directional control valve Y17; The working hole Y17-S of pilot operated directional control valve Y17 is communicated with the pilot control opening Y18-d of pilot operated directional control valve Y18, and the working hole Y18-P of pilot operated directional control valve Y18 is communicated with the working hole Y19-S of pilot operated directional control valve Y19;
Pressure-control valve group (7) comprises 4 overflow valve E19, E20, E23, E24, anti-sticking valve E25; Wherein overflow valve E19, E20, E23, E24 parallel connection, its oil-out all is communicated with fuel tank; Overflow valve E19, E23 are made as little value, and overflow valve E20, E24 are made as big value;
The working hole Y16-P of pilot operated directional control valve Y16 in the pilot operated directional control valve group (6) is connected between shuttle valve X8 and the overflow valve E7; Two oil-ins of shuttle valve X20 are connected on respectively between two oil-ins and LS pressure limiting valve E10, the E11 of shuttle valve X10, and the oil-out of shuttle valve X20 is communicated with the working hole Y13-P of pilot operated directional control valve Y13;
The oil return opening of pilot operated directional control valve Y16, Y17, Y18 is connected between the working hole Y8-A and executing agency of pilot operated directional control valve Y8 after being communicated with; The working hole Y12-S of pilot operated directional control valve Y12 is communicated with the working hole E25-A of overflow valve E19, anti-sticking valve E25; Serial connection overflow valve E20 between pilot operated directional control valve Y12 and the pilot operated directional control valve Y13; The working hole Y18-S of pilot operated directional control valve Y18 is communicated with overflow valve E23, serial connection overflow valve E24 between pilot operated directional control valve Y18 and the pilot operated directional control valve Y19; The working hole E25-T of anti-sticking valve E25 is connected between the working hole Y12-S and overflow valve E19 of pilot operated directional control valve Y12, and the working hole E25-B of anti-sticking valve E25 is connected between pilot operated directional control valve Y11 and the executing agency, and the E25-B mouth also is communicated with sensor.
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| CN 201210019805 CN102561937B (en) | 2012-01-20 | 2012-01-20 | Adjustable rock drilling control system of hydraulic rock drilling machine |
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| CN 201210019805 CN102561937B (en) | 2012-01-20 | 2012-01-20 | Adjustable rock drilling control system of hydraulic rock drilling machine |
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Cited By (10)
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| CN102943644A (en) * | 2012-11-19 | 2013-02-27 | 无锡市京锡冶金液压机电有限公司 | Hydraulic anti-sticking method of rock drill propulsion loop |
| CN108131339A (en) * | 2017-12-26 | 2018-06-08 | 徐州徐工铁路装备有限公司 | A kind of drill jumbo main pump control pressurer system |
| CN108457920A (en) * | 2016-09-27 | 2018-08-28 | 陈晓辉 | A kind of anti-deflection control method |
| CN109070935A (en) * | 2016-03-04 | 2018-12-21 | 克诺尔商用车制动***有限公司 | For keeping the device and method of the hydraulic pressure generated |
| CN110296115A (en) * | 2019-07-31 | 2019-10-01 | 中国铁建重工集团股份有限公司 | Drill jumbo and its drill boom control hydraulic system |
| CN110552923A (en) * | 2019-07-25 | 2019-12-10 | 武汉船用机械有限责任公司 | Synchronous control hydraulic system |
| CN110725816A (en) * | 2019-10-18 | 2020-01-24 | 金川集团股份有限公司 | Rock drilling hydraulic system |
| CN110966274A (en) * | 2019-12-30 | 2020-04-07 | 三一重机有限公司 | Hydraulic locking oil way, engineering machinery hydraulic system and control method thereof |
| CN112983907A (en) * | 2021-04-27 | 2021-06-18 | 中国铁建重工集团股份有限公司 | Rock drilling impact hydraulic control system |
| CN117646750A (en) * | 2023-10-20 | 2024-03-05 | 河北尚泰合力液压元件有限公司 | Roofbolter and hydraulic propulsion system thereof |
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| CN110725816A (en) * | 2019-10-18 | 2020-01-24 | 金川集团股份有限公司 | Rock drilling hydraulic system |
| CN110966274A (en) * | 2019-12-30 | 2020-04-07 | 三一重机有限公司 | Hydraulic locking oil way, engineering machinery hydraulic system and control method thereof |
| CN110966274B (en) * | 2019-12-30 | 2022-06-07 | 三一重机有限公司 | Hydraulic locking oil way, engineering machinery hydraulic system and control method thereof |
| CN112983907A (en) * | 2021-04-27 | 2021-06-18 | 中国铁建重工集团股份有限公司 | Rock drilling impact hydraulic control system |
| CN117646750A (en) * | 2023-10-20 | 2024-03-05 | 河北尚泰合力液压元件有限公司 | Roofbolter and hydraulic propulsion system thereof |
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