CN206539757U - A kind of pole at a slow speed more turns round electrohydraulic actuators - Google Patents
A kind of pole at a slow speed more turns round electrohydraulic actuators Download PDFInfo
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- CN206539757U CN206539757U CN201720044853.4U CN201720044853U CN206539757U CN 206539757 U CN206539757 U CN 206539757U CN 201720044853 U CN201720044853 U CN 201720044853U CN 206539757 U CN206539757 U CN 206539757U
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- oil cylinder
- magnetic valve
- output shaft
- valve
- slow speed
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Abstract
Electrohydraulic actuators are turned round at a slow speed the utility model discloses a kind of pole more.Compared with many rotary power units that conventional motors drive, hydraulic-driven causes whole system more to stablize, it is possible to achieve the pole less than 1rpm of mechanism is turned round at a slow speed.Multiple Hydraulic Elements micro hydraulic power unit is integrated into the utility model so that whole mechanism is compacter, is easy to arrangement and the installation of practical application.The utility model uses modularized design, and whole mechanism has been divided into drive part, control section and executable portion, easy to assembly, is easy to maintenance.
Description
Technical field
Electrohydraulic actuators (hereinafter referred to as many rotary power units) are turned round at a slow speed the present invention relates to a kind of pole more.Exactly
Say, be related to one kind using two hydraulic cylinder drivens, the pole electrohydraulic actuators for turning round rotation drivings at a slow speed can be realized more.
Background technology
Executing agency is, using the driving of certain ad hoc fashion, the drive of straight line or rotary motion to be provided under the control of electric signal
Dynamic device.Many rotary power units are one kind of executing agency, and it needs to go to perform some required movements by multiple rotations.Hold
The type of drive of row mechanism is electronic nothing more than, surges, pneumatic three kinds, many rotary power units on current staple market it is main according to
By motor driving.Although motorized motions technology maturation, it is easy to circular motion, using motor driving pole difficult to realize at a slow speed
(such as per minute one to two turns) is rotated, it is necessary to configure multi-stage speed-reducing case, cost is high, volume is big, and does not possess damping characteristics,
Pole at a slow speed in the case of kinetic stability and system reliability all decline.Surge Incoercibility of the driving using liquid, can be with
By adjusting the fluid flow entered in oil cylinder come the outgoing position and speed of control cylinder, so as to realize the drive of arbitrary velocity
It is dynamic.By reasonably configuring oil cylinder number and position, the pole slow rotation of many rotary power units can be also realized.Hydraulic-driven
Advantage is also very prominent, and stable drive is reliable, can carry buffering, and precision is high, and response is fast, can be press-fited during failure by unloading
Putting guarantee system pressure will not continue to raise, and reduce the destruction and influence caused on system.Set by suitable structure and system
Meter, can be achieved low-speed and large-torque driving, and easy to operate.Therefore, in petrochemical industry, oil, chemical industry in many industries such as ship, is adopted
Many rotary power units are driven with hydraulic technique, the switch motion of valve can be more effectively realized, especially can be well
Meet some particular/special requirements.
The content of the invention
The present invention proposes a kind of pole many revolution electrohydraulic actuators at a slow speed.Its general principle is by two hydraulic jacks
Interoperation, drives output shaft to do pole gyration at a slow speed, realizes valve or switch on and close.Its gyration exported
Rotating speed can be with steady operation in below 1rpm, and can realize that any rotating speed in the case of middle and slow speed of revolution will by changing systematic parameter
Ask.
In order to realize above-mentioned requirements, the present invention is adopted the following technical scheme that：Whole mechanism by two hydraulic cylinders, output shaft and
Crank, two magnetic valves, micro hydraulic power unit, controller, angular transducer, wherein pressure switch compositions, micro hydraulic
Power unit is drive part；Magnetic valve, controller, pressure switch, angle transducer are control section；Hydraulic jack and output shaft
For executable portion
Described micro hydraulic power unit includes safety valve, fuel tank, check valve, hydraulic pump, motor.
Described controller acceptance angle sensor signal, and electromagnetism valve events and motor speed are controlled, realize to performing machine
The control of structure rotative speed.
Its operation principle is as follows：Output shaft is rotated under two oil cylinder alternating movements by assigned direction, left side cylinder movement,
The chamber of right side oil cylinder two is all connected with fuel tank, and in free movement state, its motion mode is determined by left side oil cylinder；In left side oil cylinder
Move to before dead point, controller detects output shaft angle, control corresponding electromagnetism valve events, promote magnetic valve commutation.It is logical
Magnetic valve commutation is crossed, the chamber that the right side oil cylinder of originally passive movement is specified leads to pressure oil, and oil cylinder is switched to active movement.Left side
Oil cylinder then changes into free movement state, is rotated further under the drive of right side oil cylinder with output shaft.
As preferred, micro hydraulic power unit is employed.By the safety valve in drive mechanism, fuel tank, check valve, liquid
Press pump, motor set are into a power unit so that the structure of whole actuator is compacter, and volume reduces, it is easy in life
Arrange and install in producing line.It directly can be changed as an integral module after going wrong to module, convenient fast
It is prompt.
As preferred, moved using Driven by Hydraulic Cylinder output shaft.Compared with electric drive, hydraulic-driven is more stable, and
The revolution of pole at a slow speed can be realized.
As preferred, the action of hydraulic buttery valve is controlled present invention employs controller, to realize mechanism in difference
The mutual cooperation campaign of hydraulic cylinder on position；The rotating speed of controller also controlled motor, so as to adjust the speed of rotation of output shaft；Control
Device processed receives the signal of angular displacement sensor, so as to realize the feedback regulation of whole mechanism.
As preferred, worked and switched come control system using pressure switch in patent of the present invention, it is ensured that in valve
After being turned on and off in place, stop the work of drive mechanism immediately, so as to protect valve not to be continuously increased because of executing agency
Output torque and damage, rise a kind of soft protective effect.
As preferred, system pressure is limited in the present invention using safety valve, realizes in drive part failure, prevents
Hydraulic system pressure is excessive and causes other to endanger.
The present invention's mainly has following advantage：
1. using hydraulic system driving output shaft rotation, compared with traditional electric drive, whole system is more stablized, structure
Simplification is compact, it is possible to achieve the pole of output shaft rotates at a slow speed requirement.
2. total modularized design, has been divided into drive part, control section and executable portion, assembling side by mechanism
Just, it is easy to maintenance, appropriate section can be directly changed when certain part goes wrong, so that cost-effective.
3. by magnetic valve sequence of movement, it can easily realize that rotating drives, and output speed can be stablized in pole
Low speed
4. in valve event, actuator shaft can be plugged when valve element reaches end of travel.Performed using electro-hydraulic
Mechanism, can raise the power supply for automatically shutting off executing agency, so as to realize the automatic guarantor to valve spool of valve by system pressure
Shield.
Brief description of the drawings
Fig. 1 is the structure diagram of mechanism of the present invention；
Embodiment
The present invention is further described with reference to the accompanying drawings and examples.
As shown in Figure 1：Many revolution electrohydraulic actuators are main by output shaft 1, right oil cylinder 2, right magnetic valve 3, oil at a slow speed for pole
Case 4, check valve 5, motor 6, hydraulic pump 7, safety valve 8, pressure switch 9, left magnetic valve 10, left oil cylinder 11, angular transducer 12,
Controller 13 and hydraulic circuit composition.
Left oil cylinder 11 is fixed on stand with right oil cylinder 2 by coercive mechanism, can be rotated around hinge.Have on output shaft 1
One arm vertically with output shaft, output shaft 1 is connected by this arms and left oil cylinder 11, right oil cylinder 2 with bearing pin, left oil cylinder 11 and the right side
Oil cylinder 2 can be relatively rotated around bearing pin, so as to ensure that oil cylinder can drive output shaft 1 to rotate in motion process.
Controller 13 receives the signal exported from angular transducer 12, so as to motor 6, right magnetic valve 3 and left electromagnetism
Valve 10 is controlled.When one of oil cylinder in rotation process close to before its dead point, controller control right magnetic valve 3 with it is left
The interoperation of magnetic valve 10 is to realize the conversion of cylinder action so that output shaft 1 can cross dead point and be rotated further；Work as output
When the rotating speed of axle 1 is too fast or excessively slow, controller can realize the control to output liquid flow in hydraulic pump 7 with controlled motor 6, so that
Regulation enters the flow of hydraulic oil in oil cylinder.
Right magnetic valve 3 and left magnetic valve 10 have three operating positions, when left magnetic valve 10 with right magnetic valve 3 in centre
During position, left oil cylinder 11 and right oil cylinder 2 are in free state；When left magnetic valve 10 is in Y4 positions, the left piston of oil cylinder 11
Bar is inwardly retracted, and during in Y3 positions, piston rod is outwards ejected；When right magnetic valve 3 is in Y2 positions, the right piston rod of oil cylinder 2
Outwards ejection, during in Y1 positions, piston rod is inwardly retracted.
When the pressure of executing agency reaches a certain setting value, pressure switch 9 can be triggered, the power supply of motor 6 is cut off, plays guarantor
Protect the effect of powered valve.In addition, when output shaft 1 is stuck or cylinder piston rod is blocked, pressure rise in whole oil circuit,
In order to prevent the whole executing agency of too high pressure damage, safety valve 8 is with the addition of in oil circuit.System pressure reaches certain value
When, safety valve 8 is opened, and unnecessary hydraulic oil will flow back to oil cylinder to ensure that whole oil circuit has certain pressure and is unlikely to pressure again
It is too high.
Apparatus of the present invention work a complete flow can be as a work period, including the mistake of four actions
Journey：
As shown in figure 1, oil cylinder hinge can be with the circle phase using output shaft arm lengths as radius with the central point line of output shaft 1
Four points W1, W2, W3, W4 are given, this four points are respectively the corresponding dead point of two oil cylinders, therefore, to avoid driving oil cylinder
Dead point, every time when the crank for driving output shaft is located at the intermediate angle at two dead points, the actions of two oil cylinders is just alternately once.
For example, when crank is in angle shown in Fig. 1, the closely dead point W2 of left oil cylinder 11.Now left magnetic valve 10 is in interposition
Put, left oil cylinder 11 is in free state.Right magnetic valve 3 is in Y2 positions, and the right piston rod of oil cylinder 2 is outwards ejected.Now, right oil cylinder
2 rotate clockwise with crank from W2；When reaching W2 and W3 midpoint, controller 13 controls right magnetic valve 3 to be in interposition
Put, right oil cylinder 2 is in free state, left magnetic valve 10 jumps to Y3 positions, and the left piston rod of oil cylinder 2 is outwards ejected, drive crank
Continue along rotating clockwise, the dead point W3 for crossing right oil cylinder is rotated to W4.When crank rotates W3 to W4 midpoint, controller 13
Left magnetic valve 10 is controlled to jump to centre position, left oil cylinder 11 is in free state, and right magnetic valve 3 jumps to Y1 positions, it is right
The piston rod of oil cylinder 2 is inwardly retracted, and crank is driven along continuing to rotate clockwise, after the dead point W4 for crossing left oil cylinder 11, to W1
Rotate.Similarly, behind the midpoint for reaching W4 and W1, the switching that controller passes through magnetic valve so that right oil cylinder 2 is in free shape
State, and the piston rod of left oil cylinder 11 is retracted, and drives crank to be rotated further, so as to complete the rotation of a cycle.
Whole mechanism, which can be realized, to be rotated backward, and principle is similar with said process.
Claims (7)
1. many revolution electrohydraulic actuators are main by output shaft, right oil cylinder, right magnetic valve, fuel tank, check valve, electricity at a slow speed for a kind of pole
Machine, hydraulic pump, safety valve, pressure switch, left magnetic valve, left oil cylinder, angular transducer, controller and hydraulic circuit composition；
Described left oil cylinder is fixed on stand with right oil cylinder by coercive mechanism, can be rotated around hinge；Have one on output shaft
Perpendicular to the crank of output shaft, output shaft is connected by crank and left oil cylinder, right oil cylinder with bearing pin, left oil cylinder and the equal energy of right oil cylinder
Relatively rotated around bearing pin, so as to ensure that oil cylinder can drive output shaft rotation in motion process；
Described controller receives the signal exported from angular transducer, and motor, right magnetic valve and left magnetic valve are controlled
System；Before wherein one oil cylinder runs into rotation process, controller controls the interoperation of right magnetic valve and left magnetic valve,
Realize the conversion of cylinder action so that output shaft can cross corresponding dead point and be rotated further；When output rotating speed is too fast or mistake
When slow, controller can realize the control to output liquid flow in hydraulic pump with controlled motor, so as to adjust into oil cylinder
Oil mass；
Described right magnetic valve and left magnetic valve have three operating positions, when left magnetic valve and right magnetic valve are in an intermediate position
When, left oil cylinder and right oil cylinder are in free state；When left magnetic valve is in Y4 positions, left cylinder piston rod is inwardly retracted,
During in Y3 positions, piston rod is outwards ejected；When right magnetic valve is in Y2 positions, right cylinder piston rod is outwards ejected, and is in
During Y1 positions, piston rod is inwardly retracted；
After the completion of valve switch action, the output shaft of executing agency can be blocked, and now system pressure can be raised rapidly；But it is
When system pressure reaches setting value, pressure switch can be triggered, motor power is cut off, protection valve is unlikely to by excessive effect
Power；
When output shaft is stuck or cylinder piston rod is blocked, pressure rise in whole oil circuit, after certain pressure is reached, safety valve
Open, unnecessary hydraulic oil will flow back to oil cylinder so as to ensure that the pressure of whole system is unlikely to too high.
2. a kind of pole according to claim 1 at a slow speed more turns round electrohydraulic actuators, it is characterised in that：Using hydraulic pressure conduct
Drive force output shaft, to realize the pole of gyroaxis many revolution drivings at a slow speed.
3. a kind of pole according to claim 1 at a slow speed more turns round electrohydraulic actuators, it is characterised in that：Using controller control
Magnetic valve processed is redirected, and allows two hydraulic cylinder interoperations before dead point is run into, and realizes that output shaft is continuously rotated；Using control
Device controlled motor is rotated, and realizes the regulation of rotating speed.
4. a kind of pole according to claim 1 at a slow speed more turns round electrohydraulic actuators, it is characterised in that：Pass through angle sensor
Working condition is fed back to controller by device, improves the control accuracy of mechanism.
5. a kind of pole according to claim 1 at a slow speed more turns round electrohydraulic actuators, it is characterised in that：Hydraulic Elements are whole
Synthesize micro hydraulic power unit so that structure is compacter, be easy to arrangement and application.
6. a kind of pole according to claim 1 at a slow speed more turns round electrohydraulic actuators, it is characterised in that：Reach dynamic in valve
Make after end of travel, the power supply of executing agency can be cut off immediately by pressure switch, thus protect operated valve not by
To excessive driving force.
7. a kind of pole according to claim 1 at a slow speed more turns round electrohydraulic actuators, it is characterised in that：By adding safety
Valve realizes the overload protection of oil circuit, and addition pressure switch ensures that when oil circuit overloads motor power can be cut off in time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720044853.4U CN206539757U (en) | 2017-01-07 | 2017-01-07 | A kind of pole at a slow speed more turns round electrohydraulic actuators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720044853.4U CN206539757U (en) | 2017-01-07 | 2017-01-07 | A kind of pole at a slow speed more turns round electrohydraulic actuators |
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|---|---|
| CN206539757U true CN206539757U (en) | 2017-10-03 |
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| CN201720044853.4U Active CN206539757U (en) | 2017-01-07 | 2017-01-07 | A kind of pole at a slow speed more turns round electrohydraulic actuators |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678413A (en) * | 2017-01-07 | 2017-05-17 | 上海卡威机械技术有限公司 | Hyperslow multi-turn electrohydraulic executing mechanism |
-
2017
- 2017-01-07 CN CN201720044853.4U patent/CN206539757U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678413A (en) * | 2017-01-07 | 2017-05-17 | 上海卡威机械技术有限公司 | Hyperslow multi-turn electrohydraulic executing mechanism |
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