CN2648147Y - Power-off spring returning electric control hydraulic actuating mechanism - Google Patents
Power-off spring returning electric control hydraulic actuating mechanism Download PDFInfo
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- CN2648147Y CN2648147Y CN 03263232 CN03263232U CN2648147Y CN 2648147 Y CN2648147 Y CN 2648147Y CN 03263232 CN03263232 CN 03263232 CN 03263232 U CN03263232 U CN 03263232U CN 2648147 Y CN2648147 Y CN 2648147Y
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Abstract
The utility model relates to a power-off spring recovery electrical control hydraulic execution mechanism which is provided with a unidirectional gear pump (1); one end of the unidirectional pump (1) is connected with a check valve (2); the other end of the unidirectional pump (1) is respectively connected with an oil path of a dual-coil electrical control hydraulic electromagnetic valve (3) and an oil cylinder (4) with a spring; the other end of the check valve (2) is also respectively connected with the oil path of the dual-coil electrical control hydraulic electromagnetic valve (3) and the oil cylinder (4) with the spring; the utility model is also provided with a power supply input terminal (6) and a position sensor (5) which is connected with the oil cylinder (4) with the spring; an output of the position sensor (5) and the power supply input terminal (6) are all connected with an execution mechanism control circuit (7); an output of the execution mechanism control circuit (7) is connected with an unidirectional gear pump drive motor (8) and an execution circuit (9); a coil b at one end of the dual-coil electrical control hydraulic electromagnetic valve (3) and a capacitance C which is connected with the coil b form a capacitance charge and discharge circuit (10); one route of the execution circuit (9) is connected with the capacitance charge and discharge circuit (10); the other route of the execution circuit (9) is connected with a coil a at the other end of the dual-coil electrical control hydraulic electromagnetic valve (3). The utility model is characterized by simple structure, low cost and high reliability, etc.
Description
Technical field:
The utility model relates to a kind of electrically controlled and hydraulically actuator, especially a kind of spring to break homing position type electrically controlled and hydraulically actuator.
Background technique:
At present, applied spring to break homing position type electrically controlled and hydraulically actuator has following two kinds of structures basically in the industrial production: a kind of oil cylinder and hydraulic parts such as single electric-controlled hydraulic solenoid valve open in usual by ratchet pump, fuel tank, electric-controlled hydraulic selector valve, electric-controlled hydraulic stop valve, band spring formed.When electricity was arranged, forward and reverse motion of oil cylinder take-off lever (actuator) relied on the electric-controlled hydraulic selector valve to switch oil circuit and realizes; During outage, single electric-controlled hydraulic solenoid valve open in usual is opened, and the oil cylinder piston both sides are communicated with, and the oil cylinder take-off lever resets under spring action.Its major defect is that the hydraulic parts that is adopted is too many, the connecting pipeline complexity, volume is big, cost is high, and the necessary long-term charged work of single electric-controlled hydraulic solenoid valve open in usual, phenomenon is more serious to such an extent as to electromagnetic valve coil generates heat, and has not only influenced also to make working life its application be subjected to the restriction of ambient temperature.Another kind of then by the automatic diverter valve (patent No. 00252673.5) of double-direction gearpump and electrically controlled and hydraulically actuator or have the oil cylinder of automatic reverse hydrovalve (01272226.X), band spring of auto-lock function and hydraulic partss such as single electric-controlled hydraulic solenoid valve open in usual are formed.Though reduced hydraulic partss such as fuel tank, electric-controlled hydraulic stop valve, functions such as self-locking have also been increased, but because of double-direction gearpump has draining hole (this is that the double-direction gearpump structure determines), so dredge oil amount is many, need frequent repairing, and still exist the disadvantage that single electric-controlled hydraulic solenoid valve open in usual must long-term charged work be brought.
Summary of the invention:
The utility model is in order to solve existing in prior technology complex structure, technical problem that reliability is low, and a kind of simple in structure, spring to break homing position type electrically controlled and hydraulically actuator that reliability is high is provided.
Technical solution of the present utility model is: a kind of spring to break homing position type electrically controlled and hydraulically actuator,
A. be provided with ratchet pump 1, an end and the one-way valve 2 of ratchet pump 1 join, the other end respectively with twin coil electric-controlled hydraulic solenoid valve 3 oil circuits and the band spring oil cylinder 4 join; The other end of one-way valve 2 also respectively with twin coil electric-controlled hydraulic solenoid valve 3 oil circuits and the band spring oil cylinder 4 join;
B. be provided with power input 6, with the position transducer 5 that joins of oil cylinder 4 of band spring, the output of position transducer 5 and power input 6 all join with actuating mechanism controls loop 7, and the output in actuating mechanism controls loop 7 is joined with ratchet pump drive motor 8 and executive circuit 9; One end-coil b of twin coil electric-controlled hydraulic solenoid valve 3 and the capacitor C of joining with it constitute capacitor charge and discharge circuit 10, and executive circuit 9 one tunnel joins with capacitor charge and discharge circuit 10, and the other end coil a of another road and twin coil electric-controlled hydraulic solenoid valve 3 joins.
Described ratchet pump 1 joins by the oil cylinder 4 of fuel tank 11 with the band spring, and twin coil electric-controlled hydraulic solenoid valve 3 also joins with fuel tank 11.
Described ratchet pump 1 joins by the oil cylinder 4 of fuel tank 11 with twin coil electric-controlled hydraulic solenoid valve 3 and band spring.
Described one-way valve 2 joins by the oil cylinder 4 of fuel tank 11 with the band spring, and twin coil electric-controlled hydraulic solenoid valve 3 also joins with fuel tank 11.
Described one-way valve 2 joins by the oil cylinder 4 of fuel tank 11 with twin coil electric-controlled hydraulic solenoid valve 3 and band spring.
Be provided with rectification circuit 12 between described executive circuit 9 and twin coil electric-controlled hydraulic solenoid valve 3 coil a, the capacitor charge and discharge circuit 10.
Special construction design of the present utility model, make it promptly can use the ratchet pump to overcome the disadvantage of using the existing draining of double-direction gearpump, need not again between ratchet pump and oil cylinder, electric control reversing valve to be set, simple in structure, cost is low, volume is little, also has auto-lock function simultaneously; And the executive circuit of formations such as use relay is controlled two automatically controlled solenoid valves, long-term charged to have substituted solenoid valve charged for a long time with relay, can save the energy, prolonged the working life of solenoid valve relatively, improve the whole system functional reliability and enlarged the Environmental Conditions temperature range.
Description of drawings:
Fig. 1 is that the utility model embodiment 1 oil circuit connects and schematic block circuit diagram.
Fig. 2 is the utility model embodiment 1 concrete structure signal and a circuit diagram.
Fig. 3 is that the utility model embodiment 2 oil circuit connects and schematic block circuit diagram.
Fig. 4 is the utility model embodiment 2 concrete structure signal and a circuit diagram.
Embodiment:
Below in conjunction with description of drawings embodiment of the present utility model.
Embodiment's 1 working principle:
1. when connecting ac power supply, if when the contact of switch S A1, SA2 is all not closed, relay K A2 not electric, break contact KA2-1 closure, delayed relay KA1 gets.Because delayed relay KA1 powers on through just action after the t1 time (ms), so in t1 break contact KA1-1 closure in the time, rectification circuit DW1 t1 in the time output DC be depressed on the twin coil electric-controlled hydraulic solenoid valve 3 automatically controlled end a coils, 3 actions of twin coil electric-controlled hydraulic solenoid valve, oil circuit is closed.Reach t1 and postpone relay K A1 action during the time, contact KA1-1 disconnects, voltage is zero to the twin coil electric-controlled hydraulic solenoid valve 3 automatically controlled end a coils, and another contact KA1-3 of delayed relay KA1 also is disconnected simultaneously, and the voltage on the twin coil electric-controlled hydraulic solenoid valve 3 automatically controlled end b coils also is zero.Promptly powering on t1 after the time, under and the situation that power supply still keeps all not closed at switch S A1, SA2, the coil of twin coil electric-controlled hydraulic solenoid valve 3 does not have voltage, and its oil circuit is closed.
2. when oil cylinder 4 take-off levers of needs band spring are moved to the left, the make contact of switch S A1, switch S A2 contact still disconnects, motor M is connected power supply, drive ratchet pump 1 and rotate, hydraulic oil is from the oilhole A sucking-off of the oil cylinder 4 of band spring, enters from the A hole of ratchet pump, the B orifice flow goes out.Since one-way valve 2 allow to the B hole from the A hole by and the oil circuit of twin coil electric-controlled hydraulic solenoid valve 3 close, so high pressure oil all enters the B chamber of the oil cylinder 4 of band spring, under the effect of high pressure oil, the take-off lever of the oil cylinder 4 of band spring is moved to the left (moving to the compressed direction of spring); When reaching lead limit switch SW1 position, the contact SW1-1 of lead limit switch SW1 is disconnected, and perhaps during the arbitrary position before not arriving lead limit switch SW1 position, the contact of switch S A1, SA2 is disconnected the motor M stall.At this moment, under the effect of spring restoring force, the take-off lever of the oil cylinder 4 of band spring should move right, but because one-way valve 2 restriction hydraulic oil reverse flow cross and the oil circuit of twin coil electric-controlled hydraulic solenoid valve 3 is closed, the take-off lever of the oil cylinder 4 of band spring can only stop at current location, realize that there is electricity in actuator and during the motor stop state, has auto-lock function at whole device.At this moment, the normal opened contact KA1-2 closure of delayed relay KA1, charging circuit work, capacitor C obtains the VDC charging.
3. when the take-off lever of the oil cylinder 4 that needs the band spring moves right, the contact of switch S A1 is disconnected, the make contact of switch S A2, relay K A2 gets, break contact KA2-1 disconnects, delayed relay KA1 dead electricity, its normal opened contact KA1-2 disconnects, break contact KA1-3 closure, the b coil of capacitor C and twin coil electric-controlled hydraulic solenoid valve 3 is connected, the capacitor C discharge makes 3 actions of twin coil electric-controlled hydraulic solenoid valve, oil circuit is opened (behind the capacitor C discharge off, the voltage on the coil b is zero hold oil circuit open mode).Under the effect of spring restoring force, the high pressure oil in the oil cylinder 4 of band spring in the B chamber will flow to the A chamber of the oil cylinder 4 of band spring by twin coil electric-controlled hydraulic solenoid valve 3, and the take-off lever of the oil cylinder 4 of band spring just moves right.
Stop in the arbitrary position that resets if desired and self-locking, with the contact disconnection of switch S A2, then according to above-mentioned principle (the 1st), the oil circuit of twin coil electric-controlled hydraulic solenoid valve 3 is closed immediately, and the take-off lever of the oil cylinder 4 of band spring promptly is locked on the current location.
4. when power cut-off, no matter which kind of position switch S A1, SA2 are in, and delayed relay KA1 is with dead electricity, and with the 3rd described principle, the take-off lever (actuator) of the oil cylinder 4 of band spring will reset under the effect of spring restoring force, i.e. power-off restoration.
The utility model embodiment 2 oil circuit connects as shown in Figure 3: have two places inequality with embodiment 1, what first place was different is the oil cylinder of the oil cylinder 4 of band spring for the unequal list of both sides capacity (two) take-off lever and band spring, therefore, fuel tank 11 need be set.Can on embodiment 1 basis ratchet pump 1 be joined by the oil cylinder 4 of fuel tank 11 with the band spring, twin coil electric-controlled hydraulic solenoid valve 3 also joins with fuel tank 11.Ratchet pump 1 is joined by the oil cylinder 4 of fuel tank 11 with twin coil electric-controlled hydraulic solenoid valve 3 and band spring.Perhaps one-way valve 2 is connected on the oil inlet end of ratchet pump 1, one-way valve 2 joins by the oil cylinder 4 of fuel tank 11 with the band spring, twin coil electric-controlled hydraulic solenoid valve 3 also joins with fuel tank 11, perhaps allows one-way valve 2 join by the oil cylinder 4 of fuel tank 11 with twin coil electric-controlled hydraulic solenoid valve 3 and band spring.What second place was different is that rectification circuit 12 is two half-bridges or full bridge rectifier.
Embodiment's 2 working principles:
1. when connecting ac power supply, the contact of switch ZSA1, ZSA2 is all not closed, relay K A2 not electric, break contact KA2-1 closure, delayed relay KA1 gets.Because delayed relay KA1 powers on through just action after the t1 time (ms), so in t1 break contact KA1-1 closure in the time, rectification circuit DW1 t1 in the time output DC be depressed on the twin coil electric-controlled hydraulic solenoid valve 3 automatically controlled end a coils, 3 actions of twin coil electric-controlled hydraulic solenoid valve, oil circuit is closed.Reach t1 and postpone relay K A1 action during the time, contact KA1-1 disconnects, voltage is zero to a coil of twin coil electric-controlled hydraulic solenoid valve 3, and another contact KA1-3 of delayed relay KA1 also is disconnected simultaneously, and the voltage on the b coil of twin coil electric-controlled hydraulic solenoid valve 3 also is zero.Promptly powering on t1 after the time, under and the situation that power supply still keeps all not closed at switch ZSA1, ZSA2, the coil of twin coil electric-controlled hydraulic solenoid valve 3 does not have voltage, and its oil circuit is closed.
2. when the oil cylinder 4 of needs band spring was moved to the left, servocontroller was with control switch ZSA1 closure, and switch ZSA2 still disconnects, motor M is connected power supply, drive ratchet pump 1 and rotate, hydraulic oil is from the B hole sucking-off of fuel tank, enters from the A hole of ratchet pump, the B orifice flow goes out.Since one-way valve 2 allow to the B hole from the A hole by and the oil circuit of twin coil electric-controlled hydraulic solenoid valve 3 close, so high pressure oil all enters the B chamber of the oil cylinder 4 of band spring, under the effect of high pressure oil, the take-off lever of the oil cylinder 4 of band spring is moved to the left (moving to the compressed direction of spring); By comparing with the position signal of sensor 5, when reaching the servocontroller given location, servocontroller is the disconnection of control switch ZSA1, the motor M stall.At this moment, under the effect of spring restoring force, the take-off lever of the oil cylinder 4 of band spring should move right, but because one-way valve 2 restriction hydraulic oil reverse flow cross and the oil circuit of twin coil electric-controlled hydraulic solenoid valve 3 is closed, the take-off lever of the oil cylinder 4 of band spring can only stop at current location, realize that there is electricity in actuator and during the motor stop state, has auto-lock function at whole device.At this moment, the normal opened contact KA1-2 closure of delayed relay KA1, charging circuit work, capacitor C obtains the VDC charging.
3. when the take-off lever of the oil cylinder 4 that needs the band spring moves right, servocontroller disconnects control switch ZSA1, switch ZSA2 closure, relay K A2 gets, break contact KA2-1 disconnects, delayed relay KA1 dead electricity, its normal opened contact KA1-2 disconnects, break contact KA1-3 closure, the b coil of capacitor C and twin coil electric-controlled hydraulic solenoid valve 3 is connected, the capacitor C discharge makes 3 actions of twin coil electric-controlled hydraulic solenoid valve, oil circuit is opened (behind the capacitor C discharge off, the voltage on the coil b is zero hold oil circuit open mode).Under the effect of spring restoring force, high pressure oil in the oil cylinder 4 of band spring in the B chamber will flow to fuel tank 11 through the oilhole B of fuel tank 11 by twin coil electric-controlled hydraulic solenoid valve 3, simultaneously, hydraulic oil is from the A hole sucking-off of fuel tank 11, enter the A chamber of the oil cylinder 4 of band spring, the take-off lever of the oil cylinder 4 of band spring just moves right.Stop in the arbitrary position that resets if desired and self-locking, then servocontroller is with the disconnection of control switch ZSA2, according to above-mentioned principle (the 1st), the oil circuit of twin coil electric-controlled hydraulic solenoid valve 3 is closed immediately, and the take-off lever of the oil cylinder 4 of band spring promptly is locked on the current location.
4. when power cut-off, no matter which kind of state switch ZSA1, switch ZSA2 are in, and delayed relay KA1 is with dead electricity, and with the 3rd described principle, the take-off lever (actuator) of the oil cylinder 4 of band spring will reset under the effect of spring restoring force, i.e. power-off restoration.
Claims (6)
1. spring to break homing position type electrically controlled and hydraulically actuator is characterized in that:
A. be provided with ratchet pump (1), an end of ratchet pump (1) and one-way valve (2) join, the other end respectively with twin coil electric-controlled hydraulic solenoid valve (3) oil circuit and the band spring oil cylinder (4) join; The other end of one-way valve (2) also respectively with twin coil electric-controlled hydraulic solenoid valve (3) oil circuit and the band spring oil cylinder (4) join;
B. be provided with power input (6), with the position transducer (5) that joins of oil cylinder (4) of band spring, the output of position transducer (5) and power input (6) all join with actuating mechanism controls loop (7), and the output of actuating mechanism controls loop (7) is joined with ratchet pump drive motor (8) and executive circuit (9); One end-coil b of twin coil electric-controlled hydraulic solenoid valve (3) and the capacitor C of joining with it constitute capacitor charge and discharge circuit (10), executive circuit (9) one tunnel joins with capacitor charge and discharge circuit (10), and the other end coil a of another road and twin coil electric-controlled hydraulic solenoid valve (3) joins.
2. spring to break homing position type electrically controlled and hydraulically according to claim 1 actuator, it is characterized in that: described ratchet pump (1) joins by the oil cylinder (4) of fuel tank (11) with the band spring, and twin coil electric-controlled hydraulic solenoid valve (3) also joins with fuel tank (11).
3. spring to break homing position type electrically controlled and hydraulically according to claim 1 actuator is characterized in that: described monodentate wheel pump (2) joins by the oil cylinder (4) of fuel tank (11) with twin coil electric-controlled hydraulic solenoid valve (3) and band spring.
4. spring to break homing position type electrically controlled and hydraulically according to claim 1 actuator is characterized in that: described one-way valve (2) joins by the oil cylinder (4) of fuel tank (11) with the band spring, and twin coil electric-controlled hydraulic solenoid valve (3) also joins with fuel tank (11).
5. spring to break homing position type electrically controlled and hydraulically according to claim 1 actuator is characterized in that: described one-way valve (2) joins by the oil cylinder (4) of fuel tank (11) with twin coil electric-controlled hydraulic solenoid valve (3) and band spring.
6. according to claim 1 or 2 or 3 or 4 or 5 described spring to break homing position type electrically controlled and hydraulically actuators, it is characterized in that: be provided with rectification circuit (12) between described executive circuit (9) and twin coil electric-controlled hydraulic solenoid valve (3) coil a, the capacitor charge and discharge circuit (10).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN 03263232 CN2648147Y (en) | 2003-09-27 | 2003-09-27 | Power-off spring returning electric control hydraulic actuating mechanism |
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CN 03263232 CN2648147Y (en) | 2003-09-27 | 2003-09-27 | Power-off spring returning electric control hydraulic actuating mechanism |
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CN2648147Y true CN2648147Y (en) | 2004-10-13 |
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CN 03263232 Expired - Fee Related CN2648147Y (en) | 2003-09-27 | 2003-09-27 | Power-off spring returning electric control hydraulic actuating mechanism |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105782523A (en) * | 2014-12-26 | 2016-07-20 | 江苏瑞朗博机械设备有限公司 | Valve assembly for triggering motion by means of pressure bar destabilizing in overpressure process |
CN108223816A (en) * | 2017-11-14 | 2018-06-29 | 张连生 | A kind of hydraulic-driven pilot-operated type quick action emergency valve |
-
2003
- 2003-09-27 CN CN 03263232 patent/CN2648147Y/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105782523A (en) * | 2014-12-26 | 2016-07-20 | 江苏瑞朗博机械设备有限公司 | Valve assembly for triggering motion by means of pressure bar destabilizing in overpressure process |
CN105782523B (en) * | 2014-12-26 | 2018-08-07 | 江苏瑞朗博机械设备有限公司 | The valve member of strut buckling trigger action when superpressure |
CN108223816A (en) * | 2017-11-14 | 2018-06-29 | 张连生 | A kind of hydraulic-driven pilot-operated type quick action emergency valve |
CN108223816B (en) * | 2017-11-14 | 2024-03-26 | 张连生 | Hydraulic drive pilot type emergency cut-off valve |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C19 | Lapse of patent right due to non-payment of the annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |