CN202531013U - Positioning control system of hydraulic rock drill - Google Patents
Positioning control system of hydraulic rock drill Download PDFInfo
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- CN202531013U CN202531013U CN2012200264114U CN201220026411U CN202531013U CN 202531013 U CN202531013 U CN 202531013U CN 2012200264114 U CN2012200264114 U CN 2012200264114U CN 201220026411 U CN201220026411 U CN 201220026411U CN 202531013 U CN202531013 U CN 202531013U
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Abstract
The utility model provides a positioning control system of a hydraulic rock drill, which can realize multiple different positioning actions. The positioning control system comprises a power mechanism, an actuating mechanism, a positioning guide handle, a positioning switching valve group and a positioning multi-way valve group, wherein the power mechanism comprises two variable pumps sensitively controlled by a load pressure; each variable pump is provided with power ports P and P1 and a pressure sensitive control port LS1; the variable pumps controls the power ports P and P1 to provide power oil to the load according to the pressure of the power oil needed by the load, which is measured by the pressure sensitive control port LS1; the positioning guide handle comprises four reversing valves A1, B1, C1 and D1 and a positioning rocker with two buttons; the positioning rocker controls the disconnection and connection of the four reversing valves and controls the opening size of the valve cores of the reversing valves through an offset angle; and the positioning switching valve group comprises eight electromagnetic reversing valves, four of which are connected in series with the other four electromagnetic reversing valves. The positioning control system of the hydraulic rock drill, disclosed by the utility model, has the advantages of operational flexibility, positioning accuracy and more humanization for operation.
Description
Technical field
The utility model relates to a kind of positioning control system, is specifically related to a kind of positioning control system 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.The positioning control system of tradition hammer drill only adopts the location banked direction control valves to control executing agency; Can realize the function of locating; Accomplish the action of location; Control but when need realizing multiple different location action, just need to increase handle, this is big and locate problems such as inaccurate with regard to having caused occupation space, makes troubles also for the hammer drill operating personnel.
Summary of the invention
In view of this, the utility model provides a kind of positioning control system of hydraulic gate, can realize multiple different location action.
A kind of positioning control system of hydraulic gate, this positioning control system comprises: actuating unit, executing agency, location guide's handle, location transfer valve group, location banked direction control valves group; Wherein actuating unit comprises the variable pump of the responsive control of two load pressures; Variable pump is provided with power mouth P, P1 and presser sensor control mouthful LS1; The required power oil pressure of load that variable pump is measured according to presser sensor control mouthful LS1, control power mouth P and P1 provide power oil to load; Location guide's handle comprises four reversal valves and a handle that has two buttons; The break-make of four reversal valves of handle control; And the openings of sizes through deviation angle control reversal valve, the power oil that location guide's handle is accepted to provide from actuating unit also provides power oil to location transfer valve group;
Location transfer valve group comprises eight solenoid operated directional valves; Wherein four solenoid operated directional valves are with after other four solenoid operated directional valves are connected; Again with every group of solenoid operated directional valve parallel connection; Eight solenoid operated directional valves switching-overs of two button controls on the guide handle of location, and eight solenoid operated directional valves send guide's control signal to the pilot control opening of the pilot operated directional control valve of location banked direction control valves group, and said guide's control signal is the valve switching-over of the pilot operated directional control valve in the banked direction control valves group of control location;
Location banked direction control valves group comprises solenoid operated directional valve, seven pilot operated directional control valves and shuttle valve; Wherein the pilot control opening of pilot operated directional control valve receives guide's control signal of the solenoid operated directional valve of self-align transfer valve group, and according to this control signal control executing agency, carries out corresponding action.
Four reversal valve A1, B1, C1, D1 of said location guide's handle are and can automatically reset and reversal valve that the band ratio is regulated, when handle pushes away forward, and reversal valve A1 conducting; Handle when pusher, reversal valve D1 conducting; When handle pushes away left, reversal valve C1 conducting; When handle pushes away to the right, reversal valve B1 conducting; Reversal valve A1, B1, C1, the working hole A1-P of D1, B1-P, C1-P, D1-P in the guide's handle of location are communicated with the power mouth P1 of actuating unit respectively, and the working hole A1-A of reversal valve A1, B1, C1, D1, B1-A, C1-A, D1-A are communicated with the oil-in of location transfer valve group respectively.
Described location transfer valve group comprises two-position four-way solenoid operated directional valve Y28a, Y28b, Y28c, Y28d, Y29a, Y29b, Y29c, Y29d, and wherein the working hole Y28a-A of solenoid operated directional valve Y28a, Y28b, Y28c, Y28d, Y28b-A, Y28c-A, Y28d-A are communicated with working hole Y29a-P, Y29b-P, Y29c-P, the Y29d-P of solenoid operated directional valve Y29a, Y29b, Y29c, Y29d respectively; Solenoid operated directional valve Y28a, Y28b, Y28c, the working hole Y28a-P of Y28d, Y28b-P, Y28c-P, Y28d-P in the transfer valve group of location are communicated with working hole A1-A, B1-A, C1-A, the D1-A of reversal valve A1, B1, C1, D1 respectively; The working hole Y28a-B of solenoid operated directional valve Y28a, Y28b, Y28c, Y28d, Y28b-B, Y28c-B, Y28d-B are communicated with the pilot control opening of pilot operated directional control valve in the banked direction control valves of location respectively; The working hole Y29a-B of solenoid operated directional valve Y29a, Y29b, Y29c, Y29d, Y29b-B, Y29c-B, Y29d-B are communicated with the pilot control opening of location banked direction control valves pilot operated directional control valve respectively, and the working hole Y29a-A of solenoid operated directional valve Y29a, Y29b, Y29c, Y29d, Y29b-A, Y29c-A, Y29d-A are communicated with the pilot control opening of location banked direction control valves pilot operated directional control valve respectively with respectively.
Described location banked direction control valves group comprises 1 three seven energising magnetic reversal valve D, 6 three seven logical pilot operated directional control valve Y1, Y2, Y3, Y4, Y5, Y6; 14 choke valve N1, N2, N3; N4, N5, N6, N7, N8, N9, N10, N11, N12, N13, N14,7 shuttle valve X1, X2, X3, X4, X5, X6, X7 and 4 one way valve Z1, Z2, Z3, Z4; Also comprise 3 overflow valve E1, E2, E3,1 reducing valve J and 3 choke valve N15, N16, N17;
The working hole Y1-A of pilot operated directional control valve Y1 and Y1-B respectively with working hole Y1-X1 and Y1-X2 internal communication at pilot operated directional control valve Y1, be attempted by on the oil-in of shuttle valve X1 behind series throttle N1 and the choke valve N2 respectively on the working hole Y1-X1 of pilot operated directional control valve Y1 and the Y1-X2 place oil circuit; The working hole Y1-A of pilot operated directional control valve Y1 and Y1-B are communicated with the carry arm oil cylinder, and also are communicated with fuel tank behind connect respectively on working hole Y1-A and the Y1-B place oil circuit one way valve Z1 and the one way valve Z2; The oil-out of shuttle valve X1 is through the presser sensor control mouthful Ls1 of choke valve N15 link variable pump, and the pilot control opening Y1-d1 of pilot operated directional control valve Y1, Y1-d2 are communicated with working hole Y29c-A, the Y29d-A of solenoid operated directional valve Y29c, Y29d;
The working hole Y2-A of pilot operated directional control valve Y2 and Y2-B respectively with working hole Y2-X1 and Y2-X2 internal communication at pilot operated directional control valve Y2, be attempted by on the oil-in of shuttle valve X2 behind series throttle N3 and the choke valve N4 respectively on the working hole Y2-X1 of pilot operated directional control valve Y2 and the Y2-X2 place oil circuit; Working hole Y2-A and the Y2-B of pilot operated directional control valve Y2 are communicated with angling cylinder, and also are communicated with fuel tank behind connect respectively on working hole Y2-A and the Y2-B place oil circuit one way valve Z3 and the one way valve Z4; The oil-out of shuttle valve X2 is communicated with another oil-in of shuttle valve X1, and the pilot control opening Y2-d1 of pilot operated directional control valve Y2, Y2-d2 are communicated with working hole Y28a-B, the Y28b-B of solenoid operated directional valve Y28a, Y28b;
The working hole Y3-A of pilot operated directional control valve Y3 and Y3-B respectively with working hole Y3-X1 and Y3-X2 internal communication at pilot operated directional control valve Y3, be attempted by on the oil-in of shuttle valve X3 behind series throttle N5 and the choke valve N6 respectively on the working hole Y3-X1 of pilot operated directional control valve Y3 and the Y3-X2 place oil circuit; The working hole Y3-A of pilot operated directional control valve Y3 and Y3-B are communicated with the folding arm oil cylinder; The oil-out of shuttle valve X3 is communicated with another oil-in of shuttle valve X2, the pilot control opening Y3-d1 of pilot operated directional control valve Y3, Y3-d2 and solenoid operated directional valve Y29a, Y29b, working hole Y29a-A, Y29b-A be communicated with;
The working hole Y4-A of pilot operated directional control valve Y4 and Y4-B respectively with working hole Y4-X1 and Y4-X2 internal communication at pilot operated directional control valve Y4, be attempted by on the oil-in of shuttle valve X4 behind series throttle N7 and the choke valve N8 respectively on the working hole Y4-X1 of pilot operated directional control valve Y4 and the Y4-X2 place oil circuit; The working hole Y4-A of pilot operated directional control valve Y4 and Y4-B are communicated with propeller pitching oil cylinder; The oil-out of shuttle valve X4 is communicated with another oil-in of shuttle valve X3, and the pilot control opening Y4-d1 of pilot operated directional control valve Y4, Y4-d2 are communicated with working hole Y28c-B, the Y28d-B of solenoid operated directional valve Y28c, Y28d;
The working hole Y5-A of pilot operated directional control valve Y5 and Y5-B respectively with working hole Y5-X1 and Y5-X2 internal communication at pilot operated directional control valve Y5, be attempted by on the oil-in of shuttle valve X5 behind series throttle N9 and the choke valve N10 respectively on the working hole Y5-X1 of pilot operated directional control valve Y5 and the Y5-X2 place oil circuit; The working hole Y5-A of pilot operated directional control valve Y5 and Y5-B are communicated with the propeller oscillating oil cylinder; The oil-out of shuttle valve X5 is communicated with another oil-in of shuttle valve X4, and the pilot control opening Y5-d1 of pilot operated directional control valve Y5, Y5-d2 are communicated with working hole Y29a-B, the Y29b-B of solenoid operated directional valve Y29a, Y29b;
The working hole Y6-A of pilot operated directional control valve Y6 and Y6-B respectively with working hole Y6-X1 and Y6-X2 internal communication at pilot operated directional control valve Y6, be attempted by on the oil-in of shuttle valve X6 behind series throttle N11 and the choke valve N12 respectively on the working hole Y6-X1 of pilot operated directional control valve Y6 and the Y6-X2 place oil circuit; The working hole Y6-A of pilot operated directional control valve Y6 and Y6-B are communicated with the propeller compensating cylinder; The oil-out of shuttle valve X6 is communicated with another oil-in of shuttle valve X5, and the pilot control opening Y6-d1 of pilot operated directional control valve Y6, Y6-d2 are communicated with working hole Y29c-B, the Y29d-B of solenoid operated directional valve Y29c-B, Y29d-B;
The working hole D-A of solenoid operated directional valve D and D-B respectively with working hole D-X1 and D-X2 internal communication at solenoid operated directional valve D, be attempted by on the oil-in of shuttle valve X7 behind series throttle N13 and the choke valve N14 respectively on the working hole D-X1 of solenoid operated directional valve D and the D-X2 place oil circuit; The working hole D-A of solenoid operated directional valve D and D-B are communicated with the dozer oil cylinder; The oil-out of shuttle valve X7 is communicated with another oil-in of shuttle valve X6, and another oil-in of shuttle valve X7 is communicated with fuel tank;
Overflow valve E1, E2, E3 parallel connection; Overflow valve E1 oil-in is communicated with series throttle N16 on the oil circuit that belongs to power mouth P; Overflow valve E2 oil-in is communicated with power mouth P; Overflow valve E3 oil-in is communicated with series throttle N17 and reducing valve J on the oil circuit that belongs to power mouth P, the oil-out of overflow valve E1, E2, E3 is communicated with fuel tank; The power mouth P of actuating unit also is communicated with oil-in Y1-P, Y2-P, Y3-P, Y4-P, Y5-P, Y6-P and the D-P of pilot operated directional control valve Y1, Y2, Y3, Y4, Y5, Y6 and solenoid operated directional valve D respectively.
Beneficial effect: the utility model has increased location guide's handle and location transfer valve group; Can accomplish other products through two buttons on location guide's handle and the handle and need six actions that handle could be accomplished; Can control 12 kinds of different location action, make flexible operation, accurate positioning, operation simultaneously also more humane.
Description of drawings
Fig. 1 is the schematic diagram of the positioning control system of the utility model hydraulic gate.
Fig. 2 is the structure chart of the utility model location guide's handle.
Fig. 3 is the structure chart of the utility model location transfer valve.
Fig. 4 is the partial structurtes figure of the utility model location banked direction control valves.
Wherein, 1-dynamic structure, 2-executing agency, 8-location guide's handle, 9-location transfer valve group, 10-location banked direction control valves group
The specific embodiment
Below in conjunction with the accompanying drawing embodiment that develops simultaneously, the utility model is described in detail.
Shown in accompanying drawing 1, the positioning control system of a kind of hydraulic gate of the utility model, it comprises actuating unit, executing agency, location guide's handle 8, location transfer valve group 9, location banked direction control valves group 10, wherein:
Actuating unit comprises the variable pump of the responsive control of two load pressures; Variable pump is provided with power mouth P, P1 and presser sensor control mouthful LS1; The required power oil pressure of load that variable pump is measured according to presser sensor control mouthful LS1, control power mouth P and P1 provide power oil to load;
Shown in accompanying drawing 2, location guide handle 8 comprises that four can automatically reset and reversal valve A1, B1, C1, D1 and a handle that has two buttons that the band ratio is regulated, the break-make of four reversal valves of handle control, and when handle pushes away forward, reversal valve A1 conducting; Handle when pusher, reversal valve D1 conducting; When handle pushes away left, reversal valve C1 conducting; When handle pushes away to the right, reversal valve B1 conducting; The pushing direction of handle is controlled the break-make of corresponding reversal valve A1, B1, C1, D1, and controls the openings of sizes of the spool of reversal valve through deviation angle;
Shown in accompanying drawing 3; Location transfer valve group 9 comprises eight two-position four-way solenoid operated directional valve Y28a, Y28b, Y28c, Y28d, Y29a, Y29b, Y29c, Y29d; Wherein solenoid operated directional valve Y28a, Y28b, Y28c, Y28d connect with solenoid operated directional valve Y29a, Y29b, Y29c, Y29d respectively, and every group of solenoid operated directional valve parallel connection after will connecting.
The working hole Y28a-A of solenoid operated directional valve Y28a, Y28b, Y28c, Y28d, Y28b-A, Y28c-A, Y28d-A are communicated with working hole Y29a-P, Y29b-P, Y29c-P, the Y29d-P of solenoid operated directional valve Y29a, Y29b, Y29c, Y29d respectively.
Shown in accompanying drawing 4; Location banked direction control valves 10 comprises 1 three seven energising magnetic reversal valve D, 6 three seven logical pilot operated directional control valve Y1, Y2, Y3, Y4, Y5, Y6; 14 choke valve N1, N2, N3; N4, N5, N6, N7, N8, N9, N10, N11, N12, N13, N14,7 shuttle valve X1, X2, X3, X4, X5, X6, X7 and 4 one way valve Z1, Z2, Z3, Z4; Also comprise 3 overflow valve E1, E2, E3,1 reducing valve J and 3 choke valve N15, N16, N17;
The working hole Y1-A of pilot operated directional control valve Y1 and Y1-B respectively with working hole Y1-X1 and Y1-X2 internal communication at pilot operated directional control valve Y1, be attempted by on the oil-in of shuttle valve X1 behind series throttle N1 and the choke valve N2 respectively on the working hole Y1-X1 of pilot operated directional control valve Y1 and the Y1-X2 place oil circuit; The working hole Y1-A of pilot operated directional control valve Y1 and Y1-B are communicated with the carry arm oil cylinder, and also are communicated with fuel tank behind connect respectively on working hole Y1-A and the Y1-B place oil circuit one way valve Z1 and the one way valve Z2; The oil-out of shuttle valve X1 is through the presser sensor control mouthful Ls1 of choke valve N15 link variable pump;
The working hole Y2-A of pilot operated directional control valve Y2 and Y2-B respectively with working hole Y2-X1 and Y2-X2 internal communication at pilot operated directional control valve Y2, be attempted by on the oil-in of shuttle valve X2 behind series throttle N3 and the choke valve N4 respectively on the working hole Y2-X1 of pilot operated directional control valve Y2 and the Y2-X2 place oil circuit; Working hole Y2-A and the Y2-B of pilot operated directional control valve Y2 are communicated with angling cylinder, and also are communicated with fuel tank behind connect respectively on working hole Y2-A and the Y2-B place oil circuit one way valve Z3 and the one way valve Z4; The oil-out of shuttle valve X2 is communicated with another oil-in of shuttle valve X1;
The working hole Y3-A of pilot operated directional control valve Y3 and Y3-B respectively with working hole Y3-X1 and Y3-X2 internal communication at pilot operated directional control valve Y3, be attempted by on the oil-in of shuttle valve X3 behind series throttle N5 and the choke valve N6 respectively on the working hole Y3-X1 of pilot operated directional control valve Y3 and the Y3-X2 place oil circuit; The working hole Y3-A of pilot operated directional control valve Y3 and Y3-B are communicated with the folding arm oil cylinder; The oil-out of shuttle valve X3 is communicated with another oil-in of shuttle valve X2;
The working hole Y4-A of pilot operated directional control valve Y4 and Y4-B respectively with working hole Y4-X1 and Y4-X2 internal communication at pilot operated directional control valve Y4, be attempted by on the oil-in of shuttle valve X4 behind series throttle N7 and the choke valve N8 respectively on the working hole Y4-X1 of pilot operated directional control valve Y4 and the Y4-X2 place oil circuit; The working hole Y4-A of pilot operated directional control valve Y4 and Y4-B are communicated with propeller pitching oil cylinder; The oil-out of shuttle valve X4 is communicated with another oil-in of shuttle valve X3;
The working hole Y5-A of pilot operated directional control valve Y5 and Y5-B respectively with working hole Y5-X1 and Y5-X2 internal communication at pilot operated directional control valve Y5, be attempted by on the oil-in of shuttle valve X5 behind series throttle N9 and the choke valve N10 respectively on the working hole Y5-X1 of pilot operated directional control valve Y5 and the Y5-X2 place oil circuit; The working hole Y5-A of pilot operated directional control valve Y5 and Y5-B are communicated with the propeller oscillating oil cylinder; The oil-out of shuttle valve X5 is communicated with another oil-in of shuttle valve X4;
The working hole Y6-A of pilot operated directional control valve Y6 and Y6-B respectively with working hole Y6-X1 and Y6-X2 internal communication at pilot operated directional control valve Y6, be attempted by on the oil-in of shuttle valve X6 behind series throttle N11 and the choke valve N12 respectively on the working hole Y6-X1 of pilot operated directional control valve Y6 and the Y6-X2 place oil circuit; The working hole Y6-A of pilot operated directional control valve Y6 and Y6-B are communicated with the propeller compensating cylinder; The oil-out of shuttle valve X6 is communicated with another oil-in of shuttle valve X5;
The working hole D-A of solenoid operated directional valve D and D-B respectively with working hole D-X1 and D-X2 internal communication at solenoid operated directional valve D, be attempted by on the oil-in of shuttle valve X7 behind series throttle N13 and the choke valve N14 respectively on the working hole D-X1 of solenoid operated directional valve D and the D-X2 place oil circuit; The working hole D-A of solenoid operated directional valve D and D-B are communicated with the dozer oil cylinder; The oil-out of shuttle valve X7 is communicated with another oil-in of shuttle valve X6, and another oil-in of shuttle valve X7 is communicated with fuel tank.
Whole annexation:
The power mouth P1 of actuating unit respectively with location guide handle 8 in reversal valve A1, B1, C1, the working hole A1-P of D1, B1-P, C1-P, D1-P is communicated with, the working hole A1-A of reversal valve A1, B1, C1, D1, B1-A, C1-A, D1-A respectively with locate transfer valve group 9 in solenoid operated directional valve Y28a, Y28b, Y28c, the working hole Y28a-P of Y28d, Y28b-P, Y28c-P, Y28d-P be communicated with; The working hole Y28a-B of solenoid operated directional valve Y28a, Y28b, Y28c, Y28d, Y28b-B, Y28c-B, Y28d-B are communicated with pilot control opening Y2-d1, Y2-d2, the pilot control opening Y4-d1 of pilot operated directional control valve Y4, the Y4-d2 of the pilot operated directional control valve Y2 of location in the banked direction control valves 10 respectively; The working hole Y29a-B of solenoid operated directional valve Y29a, Y29b, Y29c, Y29d, Y29b-B, Y29c-B, Y29d-B are communicated with pilot control opening Y5-d1, Y5-d2, the pilot control opening Y6-d1 of pilot operated directional control valve Y6, the Y6-d2 of the pilot operated directional control valve Y5 of location in the banked direction control valves 10 respectively; The working hole Y29a-A of solenoid operated directional valve Y29a, Y29b, Y29c, Y29d, Y29b-A, Y29c-A, Y29d-A are communicated with pilot control opening Y3-d1, Y3-d2, the pilot control opening Y1-d1 of pilot operated directional control valve Y1, the Y1-d2 of the pilot operated directional control valve Y3 of location in the banked direction control valves 10 respectively;
The power mouth P of actuating unit is communicated with oil-in Y1-P, Y2-P, Y3-P, Y4-P, Y5-P, Y6-P and the D-P of pilot operated directional control valve Y1, Y2, Y3, Y4, Y5, Y6 and solenoid operated directional valve D respectively; The power mouth P of actuating unit also is communicated with overflow valve E1, E2, the E3 of three parallel connections; Power mouth P is communicated with series throttle N16 on the oil circuit that belongs to overflow valve E1 oil-in; Power mouth P and overflow valve E2 oil-in; Power mouth P is communicated with series throttle N17 and reducing valve J on the oil circuit that belongs to overflow valve E3 oil-in, the oil-out of overflow valve E1, E2, E3 is communicated with fuel tank, and overflow valve E1, E2, E3 shield.
The overall operation process:
Pressure oil flows into location guide's handle 8 from actuating unit, when not touching the button:
When handle pushes away forward, reversal valve A1 conducting, pressure oil is got into the valve body of reversal valve A1 by the A1-P mouth; From A1-A mouth flow reversing valves A1 and outflow location guide's handle 8; And get into the valve body of location transfer valve 9, and flow into solenoid operated directional valve Y28c from the Y28c-P mouth of solenoid operated directional valve Y28c, flow out and flow into solenoid operated directional valve Y29c by the Y28c-A mouth from the Y29c-P mouth of solenoid operated directional valve Y29c; Flow out the back by the Y29c-A mouth and get into location banked direction control valves 10; The spool that drives pilot operated directional control valve Y1 is moved to the left, and pressure oil gets into Y1 through the working hole Y1-P of pilot operated directional control valve Y1, and a part of pressure oil gets into executing agency from Y1-B outflow back lifts pivoted arm; Through behind the carry arm oil cylinder through flow back to pilot operated directional control valve Y3 from Y1-A; After Y1-T1 flows out, return fuel tank, another part pressure oil flows out from Y1-X2, feeds back to oil pump through throttle orifice N2 and shuttle valve X1.
Handle when pusher, reversal valve D1 conducting, pressure oil is got into the valve body of reversal valve D1 by the D1-P mouth; From D1-A mouth flow reversing valves D1 and outflow location guide's handle 8, and get into the valve body of locating transfer valve 9, and flow into solenoid operated directional valve Y28d from the Y28d-P mouth of solenoid operated directional valve Y28d; Flowed out and flowed into solenoid operated directional valve Y29d from the Y29d-P mouth of solenoid operated directional valve Y29d by the Y28d-A mouth, flow out the back by the Y29d-A mouth and get into location banked direction control valves 10, the spool that drives pilot operated directional control valve Y1 moves right; Pressure oil gets into Y1 through Y1-P; Part pressure oil flows out entering carry arm oil cylinder from Y1-A puts down pivoted arm, through flowing back to pilot operated directional control valve Y3 from Y1-B behind the carry arm oil cylinder, after Y1-T2 flows out, returns fuel tank; Another part pressure oil flows out from Y1-X1, feeds back to oil pump through throttle orifice N1 and shuttle valve X1.
When handle pushes away left, reversal valve C1 conducting, pressure oil is got into the valve body of reversal valve C1 by the C1-P mouth; From C1-A mouth flow reversing valves C1 and outflow location guide's handle 8, and get into the valve body of locating transfer valve 9, and flow into solenoid operated directional valve Y28b from the Y28b-P mouth of solenoid operated directional valve Y28b; Flowed out and flowed into solenoid operated directional valve Y29b from the Y29b-P mouth of solenoid operated directional valve Y29b by the Y28b-A mouth, flow out the back by the Y29b-A mouth and get into location banked direction control valves 10, the spool that drives pilot operated directional control valve Y3 moves right; Pressure oil gets into Y3 through Y3-P; Part pressure oil flows out the folding arm oil cylinder of back entering from Y3-A lifts pivoted arm, through flowing back to pilot operated directional control valve Y3 from Y3-B behind the folding arm oil cylinder, after Y3-T2 flows out, returns fuel tank; Another part pressure oil flows out from Y3-X2, feeds back to oil pump through throttle orifice N5 and shuttle valve X3.
When handle pushes away to the right, reversal valve B1 conducting, pressure oil is got into the valve body of reversal valve B1 by the B1-P mouth; Behind the B1-A mouth flow reversing valves B and flow out location guide's handle 8, and get into the valve body of location transfer valve 9, and flow into solenoid operated directional valve Y28a from the Y28a-P mouth of solenoid operated directional valve Y28a; Flowed out and flowed into solenoid operated directional valve Y29a from the Y29a-P mouth of solenoid operated directional valve Y29a by the Y28a-A mouth, flow out the back by the Y29a-A mouth and get into location banked direction control valves 10, the spool that drives pilot operated directional control valve Y3 is moved to the left; Pressure oil gets into Y3 through Y3-P; Part pressure oil flows out the folding arm oil cylinder of back entering from Y3-B puts down pivoted arm, through flowing back to pilot operated directional control valve Y3 from Y3-A behind the folding arm oil cylinder, after Y3-T1 flows out, returns fuel tank; Partial pressure oil flows out from Y3-X2 simultaneously, feeds back to oil pump through throttle orifice N6 and shuttle valve X3.
When pressing the button for the moment, Y28a, Y28b, Y28c, Y28d replace simultaneously:
When handle pushes away forward, reversal valve A1 conducting, pressure oil is got into the valve body of reversal valve A by the A1-P mouth; Behind the A1-A mouth flow reversing valves A1 and flow out location guide's handle 8, and get into the valve body of location transfer valve 9, and flow into solenoid operated directional valve Y28c from the Y28c-P mouth of solenoid operated directional valve Y28c; Flow out the back by the Y28c-B mouth and get into location banked direction control valves 10; The spool that drives pilot operated directional control valve Y4 is moved to the left, and pressure oil gets into pilot operated directional control valve Y4 through Y4-P, and a part of pressure oil gets into the propeller oil cylinder from Y4-B outflow back bows propeller; Through flowing back to pilot operated directional control valve Y4 from Y4-A behind the propeller oil cylinder; After Y1-T1 flows out, return fuel tank, another part pressure oil flows out from Y4-X2, feeds back to oil pump through throttle orifice N8 and shuttle valve X4.
Handle when pusher, reversal valve D1 conducting, pressure oil is got into the valve body of reversal valve D1 by the D1-P mouth; Behind the D1-A mouth flow reversing valves D1 and flow out location guide's handle 8, and get into the valve body of location transfer valve 9, and flow into solenoid operated directional valve Y28d from the Y28d-P mouth of solenoid operated directional valve Y28d; Flow out the back by the Y28d-B mouth and get into location banked direction control valves 10; The spool that drives pilot operated directional control valve Y4 moves right, and pressure oil gets into pilot operated directional control valve Y4 through Y4-P, and a part of pressure oil gets into the propeller oil cylinder from Y4-A outflow back faces upward propeller; Through flowing back to pilot operated directional control valve Y4 from Y4-B behind the propeller oil cylinder; After Y1-T2 flows out, return fuel tank, another part pressure oil flows out from Y4-X1, through feeding back to oil pump behind throttle orifice N7 and the shuttle valve X4.
When handle pushes away left, reversal valve C1 conducting, pressure oil is got into the valve body of reversal valve C1 by the C1-P mouth; Behind C1-A mouth flow reversing valves C1, also flow out location guide's handle 8, and get into the valve body of location transfer valve 9, from the Y28b-P mouth inflow solenoid operated directional valve Y28b of solenoid operated directional valve Y28b; Flow out the back by the Y28b-B mouth and get into location banked direction control valves 10; The spool that drives pilot operated directional control valve Y2 moves right, and pressure oil gets into pilot operated directional control valve Y2 through Y2-P, and a part of pressure oil gets into motor from Y2-A outflow back just changes motor; Flow back to pilot operated directional control valve Y2 through behind the motor from Y2-B; After Y2-T2 flows out, return fuel tank, another part pressure oil flows out from Y2-X1, through feeding back to oil pump behind throttle orifice N3 and the shuttle valve X2.
When handle pushes away to the right, reversal valve B1 conducting, pressure oil is got into the valve body of reversal valve B1 by the B1-P mouth; Behind the B1-A mouth flow reversing valves B1 and outflow location guide's handle 8 gets into the valve body of locating transfer valve 9, and flows into solenoid operated directional valve Y28a from the Y28a-P mouth of solenoid operated directional valve Y28a; Flow out the back by the Y28a-B mouth and get into location banked direction control valves 10; The spool that drives pilot operated directional control valve Y2 is moved to the left, and pressure oil gets into pilot operated directional control valve Y2 through Y2-P, and a part of pressure oil gets into motor from Y2-B outflow back and makes the motor counter-rotating; Flow back to pilot operated directional control valve Y3 through behind the motor from Y2-A; After Y2-T1 flows out, return fuel tank, partial pressure oil flows out from Y2-X2 simultaneously, feeds back to oil pump through throttle orifice N4 and shuttle valve X2.
When pressing the button two, Y29a, Y29b, Y29c, Y29d replace simultaneously:
When handle pushes away forward, reversal valve A1 conducting, pressure oil is got into the valve body of reversal valve A1 by the A1-P mouth; Flow out location guide's handle 8 behind the A1-A mouth flow reversing valves A1; And get into the valve body of location transfer valve 9, and and flow into solenoid operated directional valve Y28c from the Y28c-P mouth of solenoid operated directional valve Y28c, flow out and flow into solenoid operated directional valve Y29c by the Y28c-A mouth from the Y29c-P mouth of solenoid operated directional valve Y29c; Flow out the back by the Y29c-B mouth and get into location banked direction control valves 10; The spool that drives pilot operated directional control valve Y6 is moved to the left, and pressure oil gets into pilot operated directional control valve Y6 through Y6-P, and a part of pressure oil gets into the propeller compensating cylinder from Y6-B outflow back stretches out the propeller compensation; Through flowing back to pilot operated directional control valve Y6 from Y6-A behind the propeller compensating cylinder; After Y6-T1 flows out, return fuel tank, another part pressure oil flows out from Y6-X2, feeds back to oil pump through throttle orifice N12 and shuttle valve X6.
Handle when pusher, reversal valve D1 conducting, pressure oil is got into the valve body of reversal valve D1 by the D1-P mouth; Behind D1-A mouth flow reversing valves D1, flow out location guide's handle 8; And get into the valve body of location transfer valve 9, and flow into solenoid operated directional valve Y28d from the Y28d-P mouth of solenoid operated directional valve Y28d, flow out and flow into solenoid operated directional valve Y29d by the Y28d-A mouth from the Y29d-P mouth of solenoid operated directional valve Y29d; Flow out the back by the Y29d-B mouth and get into location banked direction control valves 10; The spool that drives pilot operated directional control valve Y6 moves right, and pressure oil gets into pilot operated directional control valve Y6 through Y6-P, and a part of pressure oil gets into the propeller compensating cylinder from Y6-A outflow back regains the propeller compensation; Through flowing back to pilot operated directional control valve Y6 from Y6-B behind the propeller compensating cylinder; After Y6-T2 flows out, return fuel tank, another part pressure oil flows out from Y6-X1, feeds back to oil pump through throttle orifice N11 and shuttle valve X6.
When handle pushes away left, reversal valve C1 conducting, pressure oil is got into the valve body of reversal valve C1 by the C1-P mouth; Behind C1-A mouth flow reversing valves C1, flow out location guide's handle 8; And get into the valve body of location transfer valve 9, and and flow into solenoid operated directional valve Y28b from the Y28b-P mouth of solenoid operated directional valve Y28b, flow out and flow into solenoid operated directional valve Y29b by the Y28b-A mouth from the Y29b-P mouth of solenoid operated directional valve Y29b; Flow out the back by the Y29b-B mouth and get into location banked direction control valves 10; The spool that drives pilot operated directional control valve Y5 moves right, and pressure oil gets into pilot operated directional control valve Y5 through Y5-P, and a part of pressure oil gets into the propeller compensating cylinder from Y5-A outflow back swings propeller left; Through flowing back to pilot operated directional control valve Y5 from Y5-B behind the propeller compensating cylinder; After Y5-T2 flows out, return fuel tank, another part pressure oil flows out from Y5-X1, feeds back to oil pump through throttle orifice N9 and shuttle valve X5.
When handle pushes away to the right, reversal valve B1 conducting, pressure oil is got into the valve body of reversal valve B1 by the B1-P mouth; Flow out location guide's handle 8 behind the B1-A mouth flow reversing valves B1; And get into the valve body of location transfer valve 9, and flow into solenoid operated directional valve Y28a from the Y28a-P mouth of solenoid operated directional valve Y28a, flow out and flow into solenoid operated directional valve Y29a by the Y28a-A mouth from the Y29a-P mouth of solenoid operated directional valve Y29a; Flow out the back by the Y29a-A mouth and get into location banked direction control valves 10; The spool that drives pilot operated directional control valve Y5 is moved to the left, and pressure oil gets into pilot operated directional control valve Y5 through Y5-P, and a part of pressure oil gets into the propeller compensating cylinder from Y5-B outflow back swings propeller to the right; Through flowing back to pilot operated directional control valve Y5 from Y5-A behind the propeller compensating cylinder; After Y5-T1 flows out, return fuel tank, another part pressure oil flows out from Y5-X2, feeds back to oil pump through throttle orifice N10 and shuttle valve X5.
Claims (4)
1. the positioning control system of a hydraulic gate is characterized in that, this positioning control system comprises: actuating unit, executing agency, location guide's handle (8), location transfer valve group (9), location banked direction control valves group (10); Wherein actuating unit comprises the variable pump of the responsive control of two load pressures; Variable pump is provided with power mouth P, P1 and presser sensor control mouthful LS1; The required power oil pressure of load that variable pump is measured according to presser sensor control mouthful LS1, control power mouth P and P1 provide power oil to load;
Location guide's handle (8) comprises four reversal valves and a handle that has two buttons; The break-make of four reversal valves of handle control; And the openings of sizes through deviation angle control reversal valve, the power oil that location guide's handle (8) is accepted to provide from actuating unit also provides power oil to location transfer valve group (9);
Location transfer valve group (9) comprises eight solenoid operated directional valves; Wherein four solenoid operated directional valves are with after other four solenoid operated directional valves are connected; Again with every group of solenoid operated directional valve parallel connection; Eight solenoid operated directional valves switching-overs of two button controls on location guide's handle (8), and eight solenoid operated directional valves send guide's control signal to the pilot control opening of the pilot operated directional control valve of location banked direction control valves group (10), and said guide's control signal is the valve switching-over of the pilot operated directional control valve in the control location banked direction control valves group (10);
Location banked direction control valves group (10) comprises solenoid operated directional valve, seven pilot operated directional control valves and shuttle valve; Wherein the pilot control opening of pilot operated directional control valve receives guide's control signal of the solenoid operated directional valve of self-align transfer valve group (9), and according to this control signal control executing agency, carries out corresponding action.
2. the positioning control system of a kind of hydraulic gate as claimed in claim 1; It is characterized in that; Four reversal valve A1, B1, C1, D1 of said location guide's handle (8) are and can automatically reset and reversal valve that the band ratio is regulated, when handle pushes away forward, and reversal valve A1 conducting; Handle when pusher, reversal valve D1 conducting; When handle pushes away left, reversal valve C1 conducting; When handle pushes away to the right, reversal valve B1 conducting; Reversal valve A1, B1, C1, the working hole A1-P of D1, B1-P, C1-P, D1-P in location guide's handle (8) are communicated with the power mouth P1 of actuating unit respectively, and the working hole A1-A of reversal valve A1, B1, C1, D1, B1-A, C1-A, D1-A are communicated with the oil-in of location transfer valve group (9) respectively.
3. the positioning control system of a kind of hydraulic gate as claimed in claim 1; It is characterized in that; Described location transfer valve group (9) comprises two-position four-way solenoid operated directional valve Y28a, Y28b, Y28c, Y28d, Y29a, Y29b, Y29c, Y29d, and wherein the working hole Y28a-A of solenoid operated directional valve Y28a, Y28b, Y28c, Y28d, Y28b-A, Y28c-A, Y28d-A are communicated with working hole Y29a-P, Y29b-P, Y29c-P, the Y29d-P of solenoid operated directional valve Y29a, Y29b, Y29c, Y29d respectively; Solenoid operated directional valve Y28a, Y28b, Y28c, the working hole Y28a-P of Y28d, Y28b-P, Y28c-P, Y28d-P in the location transfer valve group (9) are communicated with working hole A1-A, B1-A, C1-A, the D1-A of reversal valve A1, B1, C1, D1 respectively; The working hole Y28a-B of solenoid operated directional valve Y28a, Y28b, Y28c, Y28d, Y28b-B, Y28c-B, Y28d-B are communicated with the pilot control opening of pilot operated directional control valve in the location banked direction control valves (10) respectively; The working hole Y29a-B of solenoid operated directional valve Y29a, Y29b, Y29c, Y29d, Y29b-B, Y29c-B, Y29d-B are communicated with the pilot control opening of location banked direction control valves (10) pilot operated directional control valve respectively, and the working hole Y29a-A of solenoid operated directional valve Y29a, Y29b, Y29c, Y29d, Y29b-A, Y29c-A, Y29d-A are communicated with the pilot control opening of location banked direction control valves (10) pilot operated directional control valve respectively.
4. the positioning control system of a kind of hydraulic gate as claimed in claim 1; It is characterized in that; Described location banked direction control valves group (10) comprises 1 three seven energising magnetic reversal valve D, 6 three seven logical pilot operated directional control valve Y1, Y2, Y3, Y4, Y5, Y6; 14 choke valve N1, N2, N3, N4, N5, N6, N7, N8, N9, N10, N11, N12, N13, N14,7 shuttle valve X1, X2, X3, X4, X5, X6, X7 and 4 one way valve Z1, Z2, Z3, Z4; Also comprise 3 overflow valve E1, E2, E3,1 reducing valve J and 3 choke valve N15, N16, N17;
The working hole Y1-A of pilot operated directional control valve Y1 and Y1-B respectively with working hole Y1-X1 and Y1-X2 internal communication at pilot operated directional control valve Y1, be attempted by on the oil-in of shuttle valve X1 behind series throttle N1 and the choke valve N2 respectively on the working hole Y1-X1 of pilot operated directional control valve Y1 and the Y1-X2 place oil circuit; The working hole Y1-A of pilot operated directional control valve Y1 and Y1-B are communicated with the carry arm oil cylinder, and also are communicated with fuel tank behind connect respectively on working hole Y1-A and the Y1-B place oil circuit one way valve Z1 and the one way valve Z2; The oil-out of shuttle valve X1 is through the presser sensor control mouthful LS1 of choke valve N15 link variable pump, and the pilot control opening Y1-d1 of pilot operated directional control valve Y1, Y1-d2 are communicated with working hole Y29c-A, the Y29d-A of solenoid operated directional valve Y29c, Y29d;
The working hole Y2-A of pilot operated directional control valve Y2 and Y2-B respectively with working hole Y2-X1 and Y2-X2 internal communication at pilot operated directional control valve Y2, be attempted by on the oil-in of shuttle valve X2 behind series throttle N3 and the choke valve N4 respectively on the working hole Y2-X1 of pilot operated directional control valve Y2 and the Y2-X2 place oil circuit; Working hole Y2-A and the Y2-B of pilot operated directional control valve Y2 are communicated with angling cylinder, and also are communicated with fuel tank behind connect respectively on working hole Y2-A and the Y2-B place oil circuit one way valve Z3 and the one way valve Z4; The oil-out of shuttle valve X2 is communicated with another oil-in of shuttle valve X1, and the pilot control opening Y2-d1 of pilot operated directional control valve Y2, Y2-d2 are communicated with working hole Y28a-B, the Y28b-B of solenoid operated directional valve Y28a, Y28b;
The working hole Y3-A of pilot operated directional control valve Y3 and Y3-B respectively with working hole Y3-X1 and Y3-X2 internal communication at pilot operated directional control valve Y3, be attempted by on the oil-in of shuttle valve X3 behind series throttle N5 and the choke valve N6 respectively on the working hole Y3-X1 of pilot operated directional control valve Y3 and the Y3-X2 place oil circuit; The working hole Y3-A of pilot operated directional control valve Y3 and Y3-B are communicated with the folding arm oil cylinder; The oil-out of shuttle valve X3 is communicated with another oil-in of shuttle valve X2, the pilot control opening Y3-d1 of pilot operated directional control valve Y3, Y3-d2 and solenoid operated directional valve Y29a, Y29b, working hole Y29a-A, Y29b-A be communicated with;
The working hole Y4-A of pilot operated directional control valve Y4 and Y4-B respectively with working hole Y4-X1 and Y4-X2 internal communication at pilot operated directional control valve Y4, be attempted by on the oil-in of shuttle valve X4 behind series throttle N7 and the choke valve N8 respectively on the working hole Y4-X1 of pilot operated directional control valve Y4 and the Y4-X2 place oil circuit; The working hole Y4-A of pilot operated directional control valve Y4 and Y4-B are communicated with propeller pitching oil cylinder; The oil-out of shuttle valve X4 is communicated with another oil-in of shuttle valve X3, and the pilot control opening Y4-d1 of pilot operated directional control valve Y4, Y4-d2 are communicated with working hole Y28c-B, the Y28d-B of solenoid operated directional valve Y28c, Y28d;
The working hole Y5-A of pilot operated directional control valve Y5 and Y5-B respectively with working hole Y5-X1 and Y5-X2 internal communication at pilot operated directional control valve Y5, be attempted by on the oil-in of shuttle valve X5 behind series throttle N9 and the choke valve N10 respectively on the working hole Y5-X1 of pilot operated directional control valve Y5 and the Y5-X2 place oil circuit; The working hole Y5-A of pilot operated directional control valve Y5 and Y5-B are communicated with the propeller oscillating oil cylinder; The oil-out of shuttle valve X5 is communicated with another oil-in of shuttle valve X4, and the pilot control opening Y5-d1 of pilot operated directional control valve Y5, Y5-d2 are communicated with working hole Y29a-B, the Y29b-B of solenoid operated directional valve Y29a, Y29b;
The working hole Y6-A of pilot operated directional control valve Y6 and Y6-B respectively with working hole Y6-X1 and Y6-X2 internal communication at pilot operated directional control valve Y6, be attempted by on the oil-in of shuttle valve X6 behind series throttle N11 and the choke valve N12 respectively on the working hole Y6-X1 of pilot operated directional control valve Y6 and the Y6-X2 place oil circuit; The working hole Y6-A of pilot operated directional control valve Y6 and Y6-B are communicated with the propeller compensating cylinder; The oil-out of shuttle valve X6 is communicated with another oil-in of shuttle valve X5, and the pilot control opening Y6-d1 of pilot operated directional control valve Y6, Y6-d2 are communicated with working hole Y29c-B, the Y29d-B of solenoid operated directional valve Y29c-B, Y29d-B;
The working hole D-A of solenoid operated directional valve D and D-B respectively with working hole D-X1 and D-X2 internal communication at solenoid operated directional valve D, be attempted by on the oil-in of shuttle valve X7 behind series throttle N13 and the choke valve N14 respectively on the working hole D-X1 of solenoid operated directional valve D and the D-X2 place oil circuit; The working hole D-A of solenoid operated directional valve D and D-B are communicated with the dozer oil cylinder; The oil-out of shuttle valve X7 is communicated with another oil-in of shuttle valve X6, and another oil-in of shuttle valve X7 is communicated with fuel tank;
Overflow valve E1, E2, E3 parallel connection; Overflow valve E1 oil-in is communicated with series throttle N16 on the oil circuit that belongs to power mouth P; Overflow valve E2 oil-in is communicated with power mouth P; Overflow valve E3 oil-in is communicated with series throttle N17 and reducing valve J on the oil circuit that belongs to power mouth P, the oil-out of overflow valve E1, E2, E3 is communicated with fuel tank; The power mouth P of actuating unit also is communicated with oil-in Y1-P, Y2-P, Y3-P, Y4-P, Y5-P, Y6-P and the D-P of pilot operated directional control valve Y1, Y2, Y3, Y4, Y5, Y6 and solenoid operated directional valve D respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200264114U CN202531013U (en) | 2012-01-20 | 2012-01-20 | Positioning control system of hydraulic rock drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200264114U CN202531013U (en) | 2012-01-20 | 2012-01-20 | Positioning control system of hydraulic rock drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202531013U true CN202531013U (en) | 2012-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200264114U Withdrawn - After Issue CN202531013U (en) | 2012-01-20 | 2012-01-20 | Positioning control system of hydraulic rock drill |
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| CN (1) | CN202531013U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561935A (en) * | 2012-01-20 | 2012-07-11 | 中船重工中南装备有限责任公司 | Positioning control system of hydraulic rock drilling machine |
| CN103771305A (en) * | 2014-01-16 | 2014-05-07 | 杭州爱知工程车辆有限公司 | Hydraulically-controlled proportional speed-adjusting energy-saving control system for overhead working automobile and control method thereof |
| CN103821777A (en) * | 2014-02-28 | 2014-05-28 | 金川集团股份有限公司 | Hydraulic control system with continuously-adjustable power for rock drilling machine |
| WO2021016885A1 (en) * | 2019-07-30 | 2021-02-04 | 广西恒日科技股份有限公司 | Hydraulic control system for fully hydraulic wheel rock drill |
| CN112664492A (en) * | 2019-10-16 | 2021-04-16 | 沈阳新松机器人自动化股份有限公司 | Double-valve-group parallel control hydraulic system |
-
2012
- 2012-01-20 CN CN2012200264114U patent/CN202531013U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561935A (en) * | 2012-01-20 | 2012-07-11 | 中船重工中南装备有限责任公司 | Positioning control system of hydraulic rock drilling machine |
| CN103771305A (en) * | 2014-01-16 | 2014-05-07 | 杭州爱知工程车辆有限公司 | Hydraulically-controlled proportional speed-adjusting energy-saving control system for overhead working automobile and control method thereof |
| CN103771305B (en) * | 2014-01-16 | 2016-04-20 | 杭州爱知工程车辆有限公司 | A kind of hydraulic control proportionality velocity modulation energy-saving control system for aerial platform and control method thereof |
| CN103821777A (en) * | 2014-02-28 | 2014-05-28 | 金川集团股份有限公司 | Hydraulic control system with continuously-adjustable power for rock drilling machine |
| CN103821777B (en) * | 2014-02-28 | 2016-04-13 | 金川集团股份有限公司 | The continuously adjustable hydraulic control system of rock drill power |
| WO2021016885A1 (en) * | 2019-07-30 | 2021-02-04 | 广西恒日科技股份有限公司 | Hydraulic control system for fully hydraulic wheel rock drill |
| CN112664492A (en) * | 2019-10-16 | 2021-04-16 | 沈阳新松机器人自动化股份有限公司 | Double-valve-group parallel control hydraulic system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121114 Effective date of abandoning: 20140219 |
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| RGAV | Abandon patent right to avoid regrant |