CN102561937B - 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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- CN102561937B CN102561937B CN 201210019805 CN201210019805A CN102561937B CN 102561937 B CN102561937 B CN 102561937B CN 201210019805 CN201210019805 CN 201210019805 CN 201210019805 A CN201210019805 A CN 201210019805A CN 102561937 B CN102561937 B CN 102561937B
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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 control system, be specifically related to a kind of adjustable rock drilling control system of hydraulic gate, belong 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 the automatic control system of hammer drill both at home and abroad.The rock drilling control system is the important component part of hammer drill, and in prior art, the rock drilling control system is more complicated and its automaticity is not high, and there is no 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 has just caused the problem that rock drilling control system automaticity is not high and control accuracy is not high of existing hammer drill, makes troubles also for the operating personnel of hammer drill.
Summary of the invention
In view of this, the invention provides a kind of adjustable rock drilling control system of hydraulic gate, but the propelling of remote adjustment executing agency, impact and rotating pressure and flow.
A kind of adjustable rock drilling control system of hydraulic gate, rock drilling control system that this is adjustable comprise actuating unit, executing agency, pilot control piece, rock drilling control valve group, pilot control piece, pilot valve, pilot operated directional control valve group, pressure-control valve group; Wherein actuating unit comprises the variable pump that three load-sensitives are controlled, there are pressure port P, P1, P2 and presser sensor to control mouthful LS1, a LS2 on variable pump, control mouthful required pressure of load of LS1, LS2 feedback according to presser sensor, drive oil pump P1, P2 required pressure oil is provided;
The pilot control piece comprises three solenoid operated directional valve D1, D3, D4 and solenoid operated directional valve D5, the pilot control piece is accepted the pressure oil that actuating unit provides, controlled pressure oil is provided for other valve groups as pilot control after decompression, and solenoid operated directional valve D4 provides the pilot control signal to 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 pilot control signal to 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 pressures recuperation valve, six restriction AB pressure, in case load pressure surpasses setting value, the overload overflow valve is opened, and allows 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 pilot control pressure signal from pilot control piece, pilot control piece and pilot valve, and controls respectively executing agency 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 output in parallel 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 protecting each executing agency when overload or generation Qi Xi.
The pilot control piece comprises three solenoid operated directional valves, two overflow valves, a shuttle valve, the pressure oil that the acceptance of pilot control piece provides from pilot valve, and the pilot control signal is provided 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 pushing direction of handle is controlled the break-make of four relief pressure valve cartridges, and the angle of handle skew is controlled reducing valve output pressure size, pilot valve the pilot pressure oil that provides from the pilot control piece is provided and is provided pressure oil to the pilot control piece, and the pilot operated directional control valve that pilot valve is returned rock drilling control valve group provides the pilot control signal;
The pilot operated directional control valve group comprises six pilot operated directional control valves, the pilot operated directional control valve winding remote pressure oil that provides from rock drilling control valve group is provided and switches to the pressure-control valve group by logic to carry out long-range pressure regulation, and the pilot operated directional control valve of pilot operated directional control valve group is accepted the pilot control signal from pilot control piece, pilot control piece 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 preset the pressure sizes values; The pressure oil that provides from the pilot operated directional control valve group is provided in the pressure-control valve winding, 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 combinations reach remote adjustment or automatically control and advance the surge size.
in described pilot control piece, solenoid operated directional valve D1, D3, D4 are two position, three-way electromagnetic change 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 pressure hydraulic fluid port 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 respectively with the working hole D3-P of solenoid operated directional valve D3 and solenoid operated directional valve D4, the oil-in of D4-P and pilot valve is communicated with, 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 is communicated with, the working hole D3-A of solenoid operated directional valve D3 respectively with the pilot operated directional control valve group in the pilot control opening Y12-d of pilot operated directional control valve Y12 and the pilot control opening Y17-d of pilot operated directional control valve Y17 be communicated with, the working hole D4-A of solenoid operated directional valve D4 respectively with the pilot operated directional control valve group in the pilot control opening Y19-d of pilot operated directional control valve Y19 and the pilot control opening Y7-d1 of the pilot operated directional control valve Y7 in rock drilling control valve group 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 pilot operated directional control valve Y7 and Y7-B respectively with working hole Y7-X1 and Y7-X2 in pilot operated directional control valve Y7 internal communication, working hole Y7-B is communicated with executing agency, series throttle N20 respectively on working hole Y7-X1 and Y7-X2 place oil circuit, LS pressure limiting valve E6 and choke valve N21, be communicated with outside secondary transfer after LS pressure limiting valve E7, the oil-in of shuttle valve X8 is connected between choke valve N20 and LS pressure limiting valve E6, another oil-in of shuttle valve X8 is connected between choke valve N21 and 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 the pressure hydraulic fluid port P1 of actuating unit and pilot operated directional control valve Y7, the control mouth of pressure-compensated valve G1 is connected between the oil-in of the oil-out of shuttle valve X8 and shuttle valve X9, controlling a mouthful LS1 with the presser sensor of actuating unit after the oil-out place oil circuit serial connection choke valve N19 of shuttle valve X9 is communicated with,
the working hole Y8-A of pilot operated directional control valve Y8 and Y8-B respectively with working hole Y8-X1 and Y8-X2 in pilot operated directional 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 executing agency after Fill valve Z5 and trimmer valve E8 parallel connection, be serially connected between working hole Y8-B and executing agency after Fill valve Z6 and trimmer valve E9 parallel connection, series throttle N22 respectively on working hole Y8-X1 and Y8-X2 place oil circuit, LS pressure limiting valve E10 and choke valve N23, be communicated with outside secondary transfer after LS pressure limiting valve E11, the oil-in of shuttle valve X10 is connected between choke valve N22 and LS pressure limiting valve E10, another oil-in of shuttle valve X10 is connected between choke valve N23 and 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 the pressure hydraulic fluid port P1 of actuating unit and pilot operated directional control valve Y8, the control mouth of pressure-compensated valve G2 is connected between the oil-in of the oil-out of shuttle valve X10 and shuttle valve X11, the oil-out of shuttle valve X11 is communicated with another oil-in of shuttle valve X9,
the working hole Y11-A of pilot operated directional control valve Y11 and Y11-B respectively with working hole Y11-X1 and Y11-X2 in pilot operated directional 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 executing agency after Fill valve Z11 and trimmer valve E15 parallel connection, be serially connected between working hole Y11-B and executing agency after Fill valve Z12 and trimmer valve E16 parallel connection, series throttle N28 respectively on working hole Y11-X1 and Y11-X2 place oil circuit, LS pressure limiting valve E13 and choke valve N29, be communicated with outside secondary transfer after LS pressure limiting valve E14, the oil-in of shuttle valve X15 is connected between choke valve N28 and overflow valve E13, another oil-in of shuttle valve X15 is connected between choke valve N29 and 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 the pressure hydraulic fluid port P2 of actuating unit and pilot operated directional control valve Y11, the control mouth of pressure-compensated valve G5 is connected between the oil-in of the oil-out of shuttle valve X15 and shuttle valve X14, the oil-out of shuttle valve X14 is controlled a mouthful LS2 with the presser sensor of actuating unit and is communicated with, the oil-in of overflow valve E12 is connected between pressure-compensated valve G5 and pressure hydraulic fluid port 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 pressure hydraulic fluid port P1 after the oil-in serial connection choke valve N18 of precursor overflow valve E4, E5 is in parallel 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 the reversal valve that can automatically reset and regulate with ratio, when handle pushes away forward, and reversal valve C2 conducting, handle is during to 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 in pilot valve, B2, C2, the working hole A2-P of D2, B2-P, C2-P, D2-P is communicated with the working hole D5-B of solenoid operated directional valve D5 respectively, the pilot control opening Y11-d2 of pilot operated directional control valve Y11 in the working hole A2-A of reversal valve A2 and 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 the working hole D6-T of solenoid operated directional valve D6 in the pilot control piece and shuttle valve X16 is communicated with, the working hole C2-A of reversal valve C2 is connected on the oil circuit that the oil-in of the working hole D6-P of solenoid operated directional valve D6 and shuttle valve X16 is communicated with, the working hole D9 of solenoid operated directional valve D9 in the working hole D2-A of reversal valve D2 and pilot control piece is communicated with.
Described pilot control piece 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 after the oil-out place oil circuit series connection overflow valve E17 of solenoid operated directional valve D9, 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 after 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 Y11-d1 of pilot operated directional control valve Y11 and the pilot control opening Y16-d of the pilot operated directional control valve Y16 of pilot operated directional control valve group 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 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 rock drilling control valve group is communicated with, the pilot control opening Y13-d of pilot operated directional control valve Y13 in the working hole D7-B of solenoid operated directional valve D7 and 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 large 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 overflow valve E7, two oil-ins of shuttle valve X20 are connected on respectively between two oil-ins and LS pressure limiting valve E10, 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 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 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 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 with the pilot control piece and turn round various combinations actions, has simplified the control operation program, the handled easily hand operation.
(2) the present invention's pressure oil of adopting pressure compensation and load-sensitive to control executing agency carries out preferential gating parallel control, the road load-sensitive that feeds back to variable pump that pressure is larger is controlled mouth, make variable pump that pressure and flow can parallelly according to loading demand be 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 automatically realize rotation pressure control advance, propelling pressure controls and impacts and surge is controlled and advanced.
Description of drawings
Fig. 1 is the schematic diagram of the adjustable rock drilling control system of a kind of hydraulic gate of the present invention.
Fig. 2 is the schematic diagram of pilot control piece 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 pilot control piece 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-pilot control piece, 2-rock drilling control valve group, 3-pilot control piece, 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.
As shown in Figure 1, the invention provides a kind of adjustable rock drilling control system of hydraulic gate, rock drilling control system that this is adjustable comprises actuating unit, executing agency, pilot control piece 1, rock drilling control valve group 2, pilot control piece 3, pilot valve 4, pilot operated directional control valve group 6, pressure-control valve group 7; Wherein actuating unit comprises the variable pump that three load-sensitives are controlled, there are pressure port P, P1, P2 and presser sensor to control mouthful LS1, a LS2 on variable pump, control mouthful required pressure of load of LS1, LS2 feedback according to presser sensor, drive oil pump P1, P2 required pressure oil is provided.
As shown in Figure 2, pilot control 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 two position, three-way electromagnetic change 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 pressure hydraulic fluid port 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.
As shown in Figure 3, rock drilling control valve group 2 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 pilot operated directional control valve Y7 and Y7-B respectively with working hole Y7-X1 and Y7-X2 in pilot operated directional control valve Y7 internal communication, working hole Y7-B is communicated with executing agency, series throttle N20 respectively on working hole Y7-X1 and Y7-X2 place oil circuit, LS pressure limiting valve E6 and choke valve N21, be communicated with outside secondary transfer after LS pressure limiting valve E7, the oil-in of shuttle valve X8 is connected between choke valve N20 and LS pressure limiting valve E6, another oil-in of shuttle valve X8 is connected between choke valve N21 and 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 the pressure hydraulic fluid port P1 of actuating unit and pilot operated directional control valve Y7, the control mouth of pressure-compensated valve G1 is connected between the oil-in of the oil-out of shuttle valve X8 and shuttle valve X9, controlling a mouthful LS1 with the presser sensor of actuating unit after the oil-out place oil circuit serial connection choke valve N19 of shuttle valve X9 is communicated with,
the working hole Y8-A of pilot operated directional control valve Y8 and Y8-B respectively with working hole Y8-X1 and Y8-X2 in pilot operated directional 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 executing agency after Fill valve Z5 and trimmer valve E8 parallel connection, be serially connected between working hole Y8-B and executing agency after Fill valve Z6 and trimmer valve E9 parallel connection, series throttle N22 respectively on working hole Y8-X1 and Y8-X2 place oil circuit, LS pressure limiting valve E10 and choke valve N23, be communicated with outside secondary transfer after LS pressure limiting valve E11, the oil-in of shuttle valve X10 is connected between choke valve N22 and LS pressure limiting valve E10, another oil-in of shuttle valve X10 is connected between choke valve N23 and 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 the pressure hydraulic fluid port P1 of actuating unit and pilot operated directional control valve Y8, the control mouth of pressure-compensated valve G2 is connected between the oil-in of the oil-out of shuttle valve X10 and shuttle valve X11, the oil-out of shuttle valve X11 is communicated with another oil-in of shuttle valve X9,
the working hole Y11-A of pilot operated directional control valve Y11 and Y11-B respectively with working hole Y11-X1 and Y11-X2 in pilot operated directional 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 executing agency after Fill valve Z11 and trimmer valve E15 parallel connection, be serially connected between working hole Y11-B and executing agency after Fill valve Z12 and trimmer valve E16 parallel connection, series throttle N28 respectively on working hole Y11-X1 and Y11-X2 place oil circuit, LS pressure limiting valve E13 and choke valve N29, be communicated with outside secondary transfer after LS pressure limiting valve E14, the oil-in of shuttle valve X15 is connected between choke valve N28 and overflow valve E13, another oil-in of shuttle valve X15 is connected between choke valve N29 and 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 the pressure hydraulic fluid port P2 of actuating unit and pilot operated directional control valve Y11, the control mouth of pressure-compensated valve G5 is connected between the oil-in of the oil-out of shuttle valve X15 and shuttle valve X14, the oil-out of shuttle valve X14 is controlled a mouthful LS2 with the presser sensor of actuating unit and is communicated with, the oil-in of overflow valve E12 is connected between pressure-compensated valve G5 and pressure hydraulic fluid port 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 pressure hydraulic fluid port P1 after the oil-in serial connection choke valve N18 of precursor overflow valve E4, E5 is in parallel 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.
As shown in Figure 4, pilot control piece 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 after the oil-out place oil circuit series connection overflow valve E17 of solenoid operated directional valve D9, 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 after the working hole D7-A place oil circuit series connection overflow valve E18 of solenoid operated directional valve D7.
As shown in Figure 5, pilot valve 4 comprises four reversal valve A2, B2, C2, D2 and handles that can automatically reset and regulate with ratio, and handle is controlled the break-make of four reversal valves, when handle pushes away forward, and reversal valve C2 conducting; Handle is during to 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 by deviation angle.
As shown in Figure 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 large 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 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 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.
the integrated connection relation: in pilot control 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 is communicated with, the working hole D3-A of solenoid operated directional valve D3 respectively with pilot operated directional control valve group 6 in the pilot control opening Y12-d of pilot operated directional control valve Y12 and the pilot control opening Y17-d of pilot operated directional control valve Y17 be communicated with, the working hole D4-A of solenoid operated directional valve D4 respectively with pilot operated directional control valve group 6 in the pilot control opening Y19-d of pilot operated directional control valve Y19 and the pilot control opening Y7-d1 of the pilot operated directional control valve Y7 in rock drilling control valve group 2 be communicated with,
The pilot control opening Y11-d2 of pilot operated directional control valve Y11 in pilot valve 4 in the working hole A2-A of reversal valve A2 and 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 the working hole D6-T of solenoid operated directional valve D6 in pilot control piece 3 and shuttle valve X16, the working hole C2-A of reversal valve C2 is connected between the oil-in of the working hole D6-P of solenoid operated directional valve D6 and shuttle valve X16, and the working hole D2-A of reversal valve D2 is communicated with the working hole D9-of solenoid operated directional valve D9;
in pilot control piece 3 the working hole D9-P of solenoid operated directional valve D9 respectively with pilot operated directional control valve group 6 in the pilot control opening Y16-d of pilot operated directional control valve Y16 and the pilot control opening Y11-d1 of the pilot operated directional control valve Y11 in rock drilling control valve group 2 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 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 rock drilling control valve group 2 is communicated with, the pilot control opening Y13-d of pilot operated directional control valve Y13 in the working hole D7-B of solenoid operated directional valve D7 and pilot operated directional control valve group 6 is communicated with,
The working hole Y16-P of pilot operated directional control valve Y16 in pilot operated directional control valve group 6 is connected between shuttle valve X8 and overflow valve E7, two oil-ins of shuttle valve X20 are connected on respectively between two oil-ins and overflow valve E10, 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 executing agency.
The overall work process: solenoid operated directional valve D1 and D5 get electric after, solenoid operated directional valve D1 conducting, solenoid operated directional valve D5 commutation, pressure oil is flowed through after reducing valve J1 decompression as pilot control from pressure hydraulic fluid port P.
when electromagnetic valve D4 and D3 simultaneously electric, solenoid operated directional valve D4 and D3 conducting, guide oil is by after electromagnetism D1, D5, 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, one the tunnel enters the d1 mouth of pilot operated directional control valve Y7 in rock drilling control valve group 2, drive pilot operated directional control valve Y7 commutation, the pressure oil that is provided by actuating unit pressure port P1 enters executing agency after through pilot operated directional control valve Y7, realize that hammer drill impacts, another road directly enters the valve body of pilot operated directional control valve group 6, drives pilot operated directional control valve Y19 commutation, pilot operated directional control valve Y19 conducting, the pressure oil that flows out from solenoid operated directional valve D3 enters the valve body of pilot operated directional control valve group 6, drives pilot operated directional control valve Y17 commutation, and pilot operated directional control valve Y17 disconnects the control oil pressure of pilot operated directional control valve Y18, pilot operated directional control valve Y18 conducting, the conducting of pilot operated directional control valve Y7 simultaneously makes the pressure oil of load feedback by choke valve N21, enter the valve body of pilot operated directional control valve group 6 after A mouth LS pressure limiting valve E7, and the pressure oil by choke valve N21 through shuttle valve X8 with pressure feedback to pressure-compensated valve G1, be divided into two-way after remote adjustment pressure oil process pilot operated directional control valve group Y19, one the tunnel flows back to fuel tank through overflow valve E24, 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 is connected in parallel, and because arranging little value, E23 feeds back to pressure-compensated valve G1, its oil pressure is the setting value of E23, thereby realize the little impact of hammer drill.
when solenoid operated directional valve D3 must not be electric, 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, one the tunnel enters the pilot control opening of pilot operated directional control valve Y7 in rock drilling control valve group 2, drive pilot operated directional control valve Y7 commutation, pilot operated directional control valve Y7 conducting, the pressure oil that is provided by actuating unit pressure port P1 enters executing agency after through pilot operated directional control valve Y7, realize that hammer drill impacts, the pressure oil of load feedback is by choke valve N21 simultaneously, enter the valve body of pilot operated directional control valve group 6 after LS pressure limiting valve E7, and the pressure oil by choke valve N21 through shuttle valve X8 with pressure feedback to pressure-compensated valve G1, also by shuttle valve X9 control pump, another road enters the valve body of pilot operated directional control valve group 6, drives pilot operated directional control valve Y19 commutation, 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 commutation and make its disconnection, pressure oil only flows back to fuel tank through overflow valve E24 by after pilot operated directional control valve Y19, feeds back to pressure compensation G1 because E24 arranges large 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, enter into pilot valve 4 valve bodies from the pilot pressure oil of solenoid operated directional valve D5 output, after pilot valve C2, enter into the valve body of pilot control piece 3 and be divided into two-way, the one tunnel through entering into the valve body of rock drilling main valve 2 after solenoid operated directional valve D6, drive pilot operated directional control valve Y8 commutation, pilot operated directional control valve Y8 conducting, the pressure oil that is provided by actuating unit pressure hydraulic fluid port P1 enter executing agency after through pilot operated directional control valve Y8, realize that hammer drill advances; According to the pressure oil of load feedback by choke valve N23, LS pressure limiting valve E11 and through entering the valve body of pilot operated directional control valve group 6 after shuttle valve X20, and the pressure oil by N23 through shuttle valve X10 with pressure feedback to pressure-compensated valve G1, also by shuttle valve X11 control pump; Enter the pressure oil of pilot operated directional control valve group 6 valve bodies, after pilot operated directional control valve Y13, enter the valve body of pressure-control valve group 7, flow back to fuel tank after 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, thereby realizes the hammer drill flow-control of advancing at a slow speed.
Solenoid operated directional valve D7 gets when electric, its spool commutation, pressure oil is from entering the valve body of pilot operated directional control valve 6 after solenoid operated directional valve D7 flows out, drive pilot operated directional control valve Y13 commutation, pilot operated directional control valve Y13 disconnects, and at this moment propelling pressure, reach maximum by LS pressure limiting valve E11 setting, it is maximum that thereby solenoid operated directional valve D7 disconnects 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, after reversal valve B2, enter into the valve body of pilot control piece 3 and be divided into two-way, the one tunnel through entering into the valve body of rock drilling main valve 2 after solenoid operated directional valve D6, drive pilot operated directional control valve Y8 commutation, pilot operated directional control valve Y8 conducting, the pressure oil that is provided by actuating unit pressure port P1 enter executing agency after through pilot operated directional control valve Y8, realize that hammer drill falls back; Simultaneously pressure oil is by choke valve N22, LS pressure limiting valve E10 and through entering the valve body of pilot operated directional control valve group 6 after shuttle valve X20, and the pressure oil by choke valve N22 through shuttle valve X10 with pressure feedback to pressure-compensated valve G1, also remove control pump by shuttle valve X11; Enter the Long-distance Control pressure oil of pilot operated directional control valve group 6 valve bodies, after pilot operated directional control valve Y13, enter the valve body of pressure-control valve group 7, through flowing back to fuel tank after overflow valve E20, overflow valve E20 can control G2 oil circuit pressure size; Flow back to fuel tank after another road process shuttle valve X16, solenoid operated directional valve D7, 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 commutation, pressure oil is from entering the valve body of pilot operated directional control valve 6 after solenoid operated directional valve D7 flows out, drive pilot operated directional control valve Y13 commutation, pilot operated directional control valve Y13 disconnects, and at this moment propelling pressure, reach maximum by LS pressure limiting valve E10 setting, it is maximum that thereby solenoid operated directional valve D7 disconnects the adjusting realization propelling flow that passes through overflow valve E18 simultaneously, and hammer drill retreats 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, after reversal valve D2, enter in the valve body of pilot control piece 3 and be divided into two-way, one the tunnel flows back to fuel tank through solenoid operated directional valve D9, overflow valve E17, regulates the revolution flow thereby control Y11 valve core opening size by 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 commutation, pilot operated directional control valve Y11 conducting, the pressure oil that is provided by actuating unit pressure port P2 enters executing agency after through pilot operated directional control valve Y11, realizes the hammer drill revolution; Simultaneously load feedback pressure oil is through after N28, by shuttle valve X15 with pressure feedback to pressure-compensated valve G5, also by shuttle valve X14 control pump, another road enters pilot operated directional control valve group 6, drives pilot operated directional control valve Y16 commutation.
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, after reversal valve A2, enter into the valve body of rock drilling main valve 2, drive pilot operated directional control valve Y11 commutation, pilot operated directional control valve Y11 conducting, the pressure oil that is provided by actuating unit pressure hydraulic fluid port P2 enters executing agency after through pilot operated directional control valve Y11, realizes the hammer drill counter-rotating; Simultaneously pressure oil through choke valve N29 after, by shuttle valve X15 with pressure feedback to pressure-compensated valve G5, also by 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, one the tunnel enters the pilot control opening of pilot operated directional control valve Y7 in rock drilling control valve group 2, drive pilot operated directional control valve Y7 commutation, pilot operated directional control valve Y7 conducting, the pressure oil that is provided by actuating unit pressure port P1 enters executing agency after through pilot operated directional control valve Y7, realize the hammer drill percussion action, load feedback pressure oil is by choke valve N21 simultaneously, enter the valve body of pilot operated directional control valve group 6 after LS pressure limiting valve E7, and the pressure oil by choke valve N21 through shuttle valve X8 with pressure feedback to pressure-compensated valve G1, also by shuttle valve X9 control pump, another road enters the valve body of pilot operated directional control valve group 6, drives the Y19 commutation.
The pressure oil that flows out from reversal valve C2 enters into the valve body of pilot control piece 3 and is divided into two-way, one the tunnel through entering into the valve body of rock drilling main valve 2 after solenoid operated directional valve D6, drive pilot operated directional control valve Y8 commutation, pilot operated directional control valve Y8 conducting, the pressure oil that is provided by actuating unit pressure port P1 enters executing agency after through pilot operated directional control valve Y8, realizes that hammer drill advances; Load feedback pressure oil is by choke valve N23, LS pressure limiting valve E11 and through entering the valve body of pilot operated directional control valve group 6 after shuttle valve X20 simultaneously, through flowing into overflow valve E20 after pilot operated directional control valve Y13, can regulate propelling pressure, and the pressure oil by choke valve N23 through shuttle valve X10 with pressure feedback to pressure-compensated valve G1, also by shuttle valve X11 control pump; Flow back to fuel tank after another road process shuttle valve X16, solenoid operated directional valve D7, 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 pilot control piece 3 and is divided into two-way, and one the tunnel flows back to fuel tank through solenoid operated directional valve D9, overflow valve E17, controls the revolution flow thereby regulate pilot operated directional control valve Y11 valve core opening size; 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 commutation, pilot operated directional control valve Y11 conducting, the pressure oil that is provided by actuating unit pressure port P1 enters executing agency after through pilot operated directional control valve Y11, realizes the hammer drill revolution; Simultaneously load feedback pressure oil is through after N28, by shuttle valve X15 with pressure feedback to pressure-compensated valve G5, also by shuttle valve X14 control pump; Another road enters the valve body of pilot operated directional control valve group 6, drives the Y16 commutation.
when pressure oil drives pilot operated directional control valve Y16 and pilot operated directional control valve Y19 commutation, 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 enters the working hole Y16-T of pilot operated directional control valve Y16, through entering the pilot control opening Y18-d of pilot operated directional control valve Y18 after pilot operated directional control valve Y17, pilot operated directional control valve Y18 one sets the pilot operated directional control valve of commutation pressure only, Y18P-S disconnects when propelling pressure sets value greater than Y18, pressure oil by pilot operated directional control valve Y19 is directly by flowing back to fuel tank after overflow valve E24, realize remote adjustment large impact controlled pressure, another road enters pilot operated directional control valve Y18 to E23, realizes the little impulsive control pressure of remote adjustment, when propelling pressure sets value less than it, the do not commutate P-S conducting of Y18 of pilot operated directional control valve Y18, pressure oil by pilot operated directional control valve Y19 is divided into two-way, one the tunnel directly realizes remote adjustment large impact controlled pressure by overflow valve E24, another road enters pilot operated directional control valve Y18 to E23, realizes the little impulsive control pressure of remote adjustment, because E23, E24 conducting simultaneously gets the small value, thereby realize little impact, namely propelling pressure is controlled impact.
Advance remote adjustment pressure E19, E20 to be connected in series simultaneously again anti-sticking valve A, T mouth, the setting value that surpasses anti-sticking valve E25 when the rotation pressure of rotary power unit feedback, after Long-distance Control pressure oil process anti-sticking valve E25 through pilot operated directional control valve Y13, E25 is servo valve because of the anti-sticking valve, namely 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 by overflow valve E20, thereby realizes normally advancing, and namely rotation pressure is controlled and advanced.Surge also reduces when propelling pressure sets value lower than Y18.
When propelling pressure reduces, surge reduces the bit freezing problem that still can't resolve, be that continuous rising of rotation pressure reaches the sensor settings value, solenoid operated directional valve D6, D3, D4 give electricity, 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 automatically change into little impact;
If do not need the capable of preventing sticking function, anti-sticking valve E25 is transferred to maximum pressure value, it is not worked.
Claims (6)
1. the adjustable rock drilling control system of a hydraulic gate, it is characterized in that, rock drilling control system that this is adjustable comprises actuating unit, executing agency, pilot control piece (1), rock drilling control valve group (2), pilot control piece (3), pilot valve (4), pilot operated directional control valve group (6), pressure-control valve group (7);
Wherein actuating unit comprises the variable pump that three load-sensitives are controlled, there are pressure hydraulic fluid port P, P1, P2 and presser sensor to control mouthful LS1, a LS2 on variable pump, control mouthful required pressure of load of LS1, LS2 feedback according to presser sensor, and provide pressure oil by pressure hydraulic fluid port P, P1, P2;
Pilot control piece (1) comprises three solenoid operated directional valve D1, D3, D4 and solenoid operated directional valve D5, pilot control piece (1) is accepted the pressure oil that actuating unit provides, controlled pressure oil is provided for other valve group as pilot control after decompression, and solenoid operated directional valve D4 provides the pilot control signal to 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 pilot control signal to 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 pressures recuperation valve, six restriction AB pressure; In case load pressure surpasses setting value, the overload overflow valve is opened, and allows 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 pilot control pressure signal from pilot control piece (1), pilot control piece (3) and pilot valve (4), and controls respectively executing agency 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 output in parallel 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 protecting each executing agency when overload or generation Qi Qi Xi;
Pilot control piece (3) comprises three solenoid operated directional valves, two overflow valves, a shuttle valve, the pilot pressure oil that pilot control piece (3) acceptance provides from pilot valve (4), and pilot control pressure is provided 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 pushing direction of handle is controlled the pilot pressure of four spools, and the angle of handle skew is controlled the output pressure size of spool, pilot valve (4) the pilot pressure oil that provides from pilot control piece (1) is provided and is provided pressure oil to pilot control piece (3), and the pilot operated directional control valve of returning rock drilling control valve group (2) provides the pilot control signal;
Pilot operated directional control valve group (6) comprises six pilot operated directional control valves, pilot operated directional control valve group (6) the remote pressure oil that provides from rock drilling control valve group (2) is provided and is switched to pressure-control valve group (7) by logic to carry out long-range pressure regulation, and the pilot operated directional control valve of pilot operated directional control valve group (6) is accepted the pilot control signal from pilot control piece (1), pilot control piece (3) and pilot valve (4) simultaneously; Pressure-control valve group (7) comprises four overflow valves, anti-sticking valve and sensor, and four overflow valves preset sizes values; The pressure oil that pressure-control valve group (7) acceptance provides from pilot operated directional 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 combinations reach remote adjustment or automatically control and advance the surge size.
2. the adjustable rock drilling control system of a kind of hydraulic gate as claimed in claim 1, it is characterized in that, in described pilot control piece (1), solenoid operated directional valve D1, D3, D4 are two position, three-way electromagnetic change 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 pressure hydraulic fluid port 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 respectively with the working hole D3-P of solenoid operated directional valve D3 and solenoid operated directional valve D4, the oil-in of D4-P and pilot valve (4) is communicated with, 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 is communicated with, the working hole D3-A of solenoid operated directional valve D3 respectively with pilot operated directional control valve group (6) in the pilot control opening Y12-d of pilot operated directional control valve Y12 and the pilot control opening Y17-d of pilot operated directional control valve Y17 be communicated with, the working hole D4-A of solenoid operated directional valve D4 respectively with pilot operated directional control valve group (6) in the pilot control opening Y19-d of pilot operated directional control valve Y19 and the pilot control opening Y7-d1 of the pilot operated directional control valve Y7 in rock drilling control valve group (2) be communicated with.
3. the adjustable rock drilling control system 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 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 pilot operated directional control valve Y7 and Y7-B respectively with working hole Y7-X1 and Y7-X2 in pilot operated directional control valve Y7 internal communication, working hole Y7-B is communicated with executing agency, series throttle N20 respectively on working hole Y7-X1 and Y7-X2 place oil circuit, LS pressure limiting valve E6 and choke valve N21, be communicated with outside secondary transfer after LS pressure limiting valve E7, the oil-in of shuttle valve X8 is connected between choke valve N20 and LS pressure limiting valve E6, another oil-in of shuttle valve X8 is connected between choke valve N21 and 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 the pressure hydraulic fluid port P1 of actuating unit and pilot operated directional control valve Y7, the control mouth of pressure-compensated valve G1 is connected between the oil-in of the oil-out of shuttle valve X8 and shuttle valve X9, controlling a mouthful LS1 with the presser sensor of actuating unit after the oil-out place oil circuit serial connection choke valve N19 of shuttle valve X9 is communicated with,
the working hole Y8-A of pilot operated directional control valve Y8 and Y8-B respectively with working hole Y8-X1 and Y8-X2 in pilot operated directional 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 executing agency after Fill valve Z5 and trimmer valve E8 parallel connection, be serially connected between working hole Y8-B and executing agency after Fill valve Z6 and trimmer valve E9 parallel connection, series throttle N22 respectively on working hole Y8-X1 and Y8-X2 place oil circuit, LS pressure limiting valve E10 and choke valve N23, be communicated with outside secondary transfer after LS pressure limiting valve E11, the oil-in of shuttle valve X10 is connected between choke valve N22 and LS pressure limiting valve E10, another oil-in of shuttle valve X10 is connected between choke valve N23 and 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 the pressure hydraulic fluid port P1 of actuating unit and pilot operated directional control valve Y8, the control mouth of pressure-compensated valve G2 is connected between the oil-in of the oil-out of shuttle valve X10 and shuttle valve X11, the oil-out of shuttle valve X11 is communicated with another oil-in of shuttle valve X9,
the working hole Y11-A of pilot operated directional control valve Y11 and Y11-B respectively with working hole Y11-X1 and Y11-X2 in pilot operated directional 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 executing agency after Fill valve Z11 and trimmer valve E15 parallel connection, be serially connected between working hole Y11-B and executing agency after Fill valve Z12 and trimmer valve E16 parallel connection, series throttle N28 respectively on working hole Y11-X1 and Y11-X2 place oil circuit, LS pressure limiting valve E13 and choke valve N29, be communicated with outside secondary transfer after LS pressure limiting valve E14, the oil-in of shuttle valve X15 is connected between choke valve N28 and overflow valve E13, another oil-in of shuttle valve X15 is connected between choke valve N29 and 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 the pressure hydraulic fluid port P2 of actuating unit and pilot operated directional control valve Y11, the control mouth of pressure-compensated valve G5 is connected between the oil-in of the oil-out of shuttle valve X15 and shuttle valve X14, the oil-out of shuttle valve X14 is controlled a mouthful LS2 with the presser sensor of actuating unit and is communicated with, the oil-in of overflow valve E12 is connected between pressure-compensated valve G5 and pressure hydraulic fluid port 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 pressure hydraulic fluid port P1 after the oil-in serial connection choke valve N18 of precursor overflow valve E4, E5 is in parallel 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. the adjustable rock drilling control system 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 the reversal valve that can automatically reset and regulate with ratio, when handle pushes away forward, and reversal valve C2 conducting, handle is during to 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 in pilot valve (4), B2, C2, the working hole A2-P of D2, B2-P, C2-P, D2-P is communicated with the working hole D5-B of solenoid operated directional valve D5 respectively, the pilot control opening Y11-d2 of pilot operated directional control valve Y11 in the working hole A2-A of reversal valve A2 and rock drilling control valve group (2) is communicated with, the working hole B2-A of reversal valve B2 is connected on the oil circuit that another oil-in of the working hole D6-T of solenoid operated directional valve D6 in pilot control piece (3) and shuttle valve X16 is communicated with, the working hole C2-A of reversal valve C2 is connected on the oil circuit that the oil-in of the working hole D6-P of solenoid operated directional valve D6 and shuttle valve X16 is communicated with, the working hole of solenoid operated directional valve D9 in the working hole D2-A of reversal valve D2 and pilot control piece (3) is communicated with.
5. the adjustable rock drilling control system of a kind of hydraulic gate as claimed in claim 1, it is characterized in that, described pilot control piece (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 after the oil-out place oil circuit series connection overflow valve E17 of solenoid operated directional valve D9, 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 after 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 Y11-d1 of pilot operated directional control valve Y11 and the pilot control opening Y16-d of the pilot operated directional control valve Y16 of pilot operated directional control valve group (6) 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 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 rock drilling control valve group (2) is communicated with, the pilot control opening Y13-d of pilot operated directional control valve Y13 in the working hole D7-B of solenoid operated directional valve D7 and pilot operated directional control valve group (6) is communicated with.
6. the adjustable rock drilling control system of a kind of hydraulic gate as claimed in claim 1, 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 large value;
The working hole Y16-P of pilot operated directional control valve Y16 in pilot operated directional control valve group (6) is connected between the middle shuttle valve X8 of rock drilling control valve group (2) and the middle overflow valve E7 of rock drilling control valve group (2), two oil-ins of shuttle valve X20 are connected on respectively between two oil-ins and LS pressure limiting valve E10, E11 of shuttle valve X10 in rock drilling control valve group (2) in rock drilling control valve group (2), and in rock drilling control valve group (2), 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 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 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, the working hole E25-B of anti-sticking valve E25 is connected between the middle pilot operated directional control valve Y11 of rock drilling control valve group (2) and executing agency, and the E25-B mouth also is communicated with sensor.
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| Application Number | Priority Date | Filing Date | Title |
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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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| CN102561937A CN102561937A (en) | 2012-07-11 |
| CN102561937B true CN102561937B (en) | 2013-11-06 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| DE102016002555A1 (en) * | 2016-03-04 | 2017-09-07 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Apparatus and method for maintaining a generated hydraulic pressure |
| CN106351900B (en) * | 2016-09-27 | 2018-12-18 | 桂林航天工业学院 | A kind of anti-deflection rock drilling control system |
| 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 |
| CN110552923B (en) * | 2019-07-25 | 2020-12-08 | 武汉船用机械有限责任公司 | Synchronous control hydraulic system |
| CN110296115B (en) * | 2019-07-31 | 2024-04-19 | 中国铁建重工集团股份有限公司 | Drill jumbo and drill boom control hydraulic system thereof |
| CN110725816A (en) * | 2019-10-18 | 2020-01-24 | 金川集团股份有限公司 | Rock drilling hydraulic system |
| 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 |
| CN112983907B (en) * | 2021-04-27 | 2023-05-02 | 中国铁建重工集团股份有限公司 | Hydraulic control system for rock drilling impact |
| 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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| CN102561937A (en) | 2012-07-11 |
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