CN106523475A - External liquid-controlled electromechanical actuator - Google Patents
External liquid-controlled electromechanical actuator Download PDFInfo
- Publication number
- CN106523475A CN106523475A CN201611195440.2A CN201611195440A CN106523475A CN 106523475 A CN106523475 A CN 106523475A CN 201611195440 A CN201611195440 A CN 201611195440A CN 106523475 A CN106523475 A CN 106523475A
- Authority
- CN
- China
- Prior art keywords
- control
- control unit
- pressure
- pipeline
- pipe road
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/001—Servomotor systems with fluidic control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/25—Pressure control functions
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses an external liquid-controlled electromechanical actuator which comprises a first hydraulic working pipe, a second hydraulic working pipe, a double-way variable displacement motor, a first control unit, a second control unit, an adjusting oil cylinder, a third control unit, a first external control pipe and a second external control pipe. According to the external liquid-controlled electromechanical actuator, the second control unit, the third control unit and the adjusting oil cylinder are matched so that impact of the working pipes on the double-way variable displacement motor due to too-high pressure can be effectively prevented. The second control unit of the external liquid-controlled electromechanical actuator is switched between a first position and a second position according to the pressure difference between the first external control pipe and the second external control pipe, so that switching of the position of the second control unit is controlled by the external pipes, and displacement of the double-way variable displacement motor can be selectively controlled by external control.
Description
Technical field
The present invention relates to electromechanical integration technology area, more particularly to a kind of electromechanical actuator of outside hydraulic control.
Background technology
Double-action variable displacement motor can undertake load in two rotation directions, specifically, as two with double-action variable displacement motor
The pressure of first working line and the second working line of individual port connection is different, and double-action variable displacement motor becomes being capable of driving load.
Such as, when the first working line more than the second working line pressure when, double-action variable displacement motor towards a rotation direction driving load,
And when the first working line is less than the pressure in the second working line, double-action variable displacement motor drives negative towards another rotation direction
Carry.
However, control system of the prior art cannot be according to the pressure control in the first working line and the second working line
The discharge capacity of double-action variable displacement motor processed, that is to say, that no matter the pressure of the first working line and the second working line has much, two-way
The discharge capacity of variable displacement motor is constant, and so as to cause motor, because pressure is excessive, discharge capacity is constant and damage, or causes motor because of pressure mistake
It is little and discharge capacity is constant and is short of power.
The content of the invention
For above-mentioned technical problem present in existing technology, the present invention's implements there is provided a kind of electromechanics of outside hydraulic control
Actuator.
To solve above-mentioned technical problem, the technical solution used in the present invention is：
A kind of electromechanical actuator of outside hydraulic control, including：
First hydraulic pipeline；
Second hydraulic pipeline；
Double-action variable displacement motor, which is used to be connected with first fluid pressure line and second fluid pressure line；
First control unit, which is passed through the first branch line and is connected with first fluid pressure line, by second branched pipe
Road is connected with second fluid pressure line；First control unit has makes first branch line and second branched pipe road
The first position blocked, with blocking first branch line, and make the of the second branched pipe road backflow fuel tank
Two positions and have and make first branch line backflow fuel tank, and make the 3rd position that the second branched pipe road blocks；
Second control unit, which is passed through Three branched pipe road and is connected with first fluid pressure line, by the 4th branched pipe
Road is connected with second fluid pressure line；Second control unit has makes institute Three branched pipe road block and make the described 4th
The first position of branch line conducting and make that the Three branched pipe road turns on and make that the 4th branch line blocks the
Two positions；
Oil cylinder is adjusted, which includes that cylinder body, the piston being arranged in the cylinder body and one end are connected with the piston, another
End stretch out the cylinder body after the piston rod that is connected with the swash plate of the double-action variable displacement motor, the piston is by the work in the cylinder body
Plug chamber is divided into rod chamber and rodless cavity；The outlet of second control unit is connected with control piper, the control piper point
Into quintafurcation pipeline and the 6th branch line, the quintafurcation pipeline is connected with the rodless cavity, the 6th branched pipe
Road is connected with the rod chamber；
3rd control unit, which is arranged on the quintafurcation pipeline, and the 3rd control unit has makes the control
First position and block the control piper and make the rodless cavity backflow fuel tank that tubulation road is connected with the rodless cavity
The second position, wherein：
Second control unit has two second unit control mouths, and two second unit control mouths are respectively with the
One external control pipeline and the second external control pipeline connection, so that when the pressure in the first external control pipeline is more than institute
When stating the pressure in the second external control pipeline, second control unit is in the second position, when first external control
When pressure in pipeline is less than the pressure in the second external control pipeline, second control unit is in the second position；
3rd control unit has a 3rd unit control mouth, the 3rd unit control mouth and the control pipe
Road connects, and when the pressure in the control piper increases, the 3rd control unit switches to the second position from first position.
Preferably, first control unit has two first module control mouths, the first module control mouth difference
Connect with first branch line and the second branched pipe road, so that when the pressure in first branch line is equal to institute
When stating the pressure in second branched pipe road, first control unit is in first position, when in first branch line
When pressure is more than the pressure in the second branched pipe road, first control unit is in the second position, when described first point
When pressure in bye-pass is less than the pressure in the second branched pipe road, first control unit is in the 3rd position.
Preferably, first control unit is three position three-way change valve.
Preferably, the 3rd control unit is two position three way directional control valve.
Preferably, the 3rd control unit is proportional reversing valve.
Compared with prior art, the beneficial effect of the electromechanical actuator of outside hydraulic control of the invention is：The outside of the present invention
The electromechanical actuator of hydraulic control pass through the second control unit and the 3rd control unit and adjust oil cylinder coordinate effectively can prevent because
Working line hypertonia and the impact to double-action variable displacement motor.
Pressure official post of second control unit of the present invention according to the first external control pipeline and the second external control pipeline
Which switches between the first position and the second position, so that the switching of the position of the second control unit is controlled by exterior line
System, so as to the discharge capacity that external control selectively controls double-action variable displacement motor can be passed through.
Description of the drawings
Fig. 1 is the structural representation of the electromechanical actuator of the outside hydraulic control of the present invention.
In figure：
1- double-action variable displacement motors；The first working lines of 2-；The second working lines of 3-；The first control units of 4-；First point of 5-
Bye-pass；6- second branched pipes road；The second control units of 7-；8- Three branched pipes road；The 4th branch lines of 9-；10- the 3rd is controlled
Unit processed；11- control pipers；12- quintafurcation pipelines；The 6th branch lines of 13-；14- adjusts oil cylinder；15- fuel tanks；101- is oblique
Disk；16- the first external control pipelines；17- the second external control pipelines.
Specific embodiment
To make those skilled in the art be better understood from technical scheme, below in conjunction with the accompanying drawings and specific embodiment party
Formula elaborates to the present invention.
As shown in Figure 1 The embodiment provides a kind of electromechanical actuator of outside hydraulic control, for according to work pressure
The discharge capacity of power or operating pressure difference control double-action variable displacement motor 1, the electromechanical actuator of the outside hydraulic control include：First hydraulic
Pipeline；Second hydraulic pipeline；Double-action variable displacement motor 1, which is used for and first fluid pressure line and second hydraulic tube
Road connects；First control unit 4, which is passed through the first branch line 5 and is connected with first fluid pressure line, by second branched pipe
Road 6 is connected with second fluid pressure line；First control unit 4 has makes first branch line 5 and the second branch
First position that pipeline 6 is blocked, with blocking first branch line 5, and make 6 withdrawing oil of second branched pipe road
The second position of case 15 and have and make first branch line 5 backflow fuel tank 15, and block the second branched pipe road 6
The 3rd position；Second control unit 7, which is passed through Three branched pipe road 8 and is connected with first fluid pressure line, by the 4th point
Bye-pass 9 is connected with second fluid pressure line；Second control unit 7 has makes institute Three branched pipe road 8 block and make
First position and the Three branched pipe road 8 is turned on and is made the 4th branched pipe that 4th branch line 9 is turned on
The second position that road 9 is blocked；Adjust oil cylinder 14, it include cylinder body, the piston being arranged in the cylinder body and one end with it is described
Piston connects, the piston rod that the other end is connected with the swash plate 101 of the double-action variable displacement motor 1 after stretching out the cylinder body, the work
Plunger shaft in the cylinder body is divided into rod chamber and rodless cavity by plug；The outlet of second control unit 7 is connected with control
Pipeline 11, the control piper 11 are divided into quintafurcation pipeline 12 and the 6th branch line 13, the quintafurcation pipeline 12 with
The rodless cavity connection, the 6th branch line 13 are connected with the rod chamber；3rd control unit 10, which is arranged on described
On quintafurcation pipeline 12, the 3rd control unit 10 has make the control piper 11 connect with the rodless cavity first
Position and block the control piper 11 and make the rodless cavity flow back the second position of fuel tank 15, wherein：Described second
Control unit 7 has two second unit control mouths, two second unit control mouths respectively with the first external control pipeline
16 connect with the second external control pipeline 17, so that when the pressure in the first external control pipeline 16 is more than outside described second
During pressure in portion's control piper 17, second control unit 7 is in the second position, when the first external control pipeline 16
When interior pressure is less than the pressure in the second external control pipeline 17, second control unit 7 is in the second position；Institute
State the 3rd control unit 10 and there is a 3rd unit control mouth, the 3rd unit control mouth is connected with the control piper 11
Logical, when the pressure in the control piper 11 increases, the 3rd control unit 10 switches to the second position from first position.
Understood according to above-mentioned, when the first working line 2 is more than the second working line 3, the first control unit 4 is in first
Position, the first working line 2 are blocked by the first control unit 4, and the hydraulic oil in the second working line 3 flows back to fuel tank 15, two-way
Variable displacement motor 1 rotates to drive load in one direction.And when the first working line 2 is excessive, make the first external control pipeline
Pressure of 16 pressure more than the second external control pipeline 17, so that the second control unit 7 switches to the second position, so that
Hydraulic oil in first working line 2 is entered in control piper 11 by the second control unit 7, the hydraulic oil in control piper 11
Unit the 3rd is caused to switch to the second position by the 3rd unit control mouth, so that the hydraulic oil oil sump tank 15 in rodless cavity,
And quintafurcation pipeline 12 is truncated, the hydraulic oil in control piper 11 enter rod chamber through the 6th branch line 13 so that
Direction movement of the piston rod towards the inclination angle increase of the swash plate 101 for making double-action variable displacement motor 1, so that the row of double-action variable displacement motor 1
Amount increase, the situation for increasing 2 pressure of the first working line of adaptation increase because of 2 pressure of the first working line so as to effectively prevent
Situation that is big and causing double-action variable displacement motor 1 to damage occurs.Correspondingly, when the second working line 3 is more than the first working line 2
When, the first control unit 4 is in the second position, and the second working line 3 is blocked by the first control unit 4, in the first working line 2
Hydraulic oil flow back to fuel tank 15, double-action variable displacement motor 1 rotates to drive load in the opposite direction.And when 3 mistake of the second working line
When big, the pressure of the second external control pipeline 17 is made more than the pressure of the first external control pipeline 16, so that the second control is single
Unit 7 switches to first position, so that the hydraulic oil in the second working line 3 enters control piper by the second control unit 7
In 11, the hydraulic oil in control piper 11 causes Unit the 3rd to switch to the second position by the 3rd unit control mouth, so that
Hydraulic oil oil sump tank 15 in rodless cavity, and quintafurcation pipeline 12 is truncated, the hydraulic oil in control piper 11 is through the 6th
Branch line 13 is into rod chamber so that piston rod is moved towards the direction of the inclination angle increase of the swash plate 101 for making double-action variable displacement motor 1
It is dynamic, so that the discharge capacity increase of double-action variable displacement motor 1, the situation for increasing 3 pressure of the second working line of adaptation, so as to effectively prevent
Having stopped causes the situation that double-action variable displacement motor 1 is damaged to occur because 3 pressure of the second working line increases.
It follows that the second control unit 7 and the 3rd control unit 10 and regulation oil cylinder 14 effectively can be prevented because of work
Make that loine pressure is too high and impact to double-action variable displacement motor 1.
Second control unit 7 of the present invention is according to the first external control pipeline 16 and the pressure of the second external control pipeline 17
Official post its switch between the first position and the second position so that the switching of the position of the second control unit 7 receive exterior line
Control, selectively control the discharge capacity of double-action variable displacement motor 1 so as to external control can be passed through.
Preferably, first control unit 4 has two first module control mouths, the first module control mouth difference
Connect with first branch line 5 and the second branched pipe road 6, so that when pressure in first branch line 5 etc.
During pressure in the second branched pipe road 6, first control unit 4 is in first position, when first branched pipe
When pressure in road 5 is more than the pressure in the second branched pipe road 6, first control unit 4 is in the second position, works as institute
When stating pressure in the first branch line 5 less than pressure in the second branched pipe road 6, first control unit 4 is in
3rd position.
Preferably, first control unit 4 is three position three-way change valve.
Preferably, the 3rd control unit 10 is two position three way directional control valve.
Preferably, the 3rd control unit 10 is proportional reversing valve.
Above example is only the exemplary embodiment of the present invention, is not used in the restriction present invention, protection scope of the present invention
It is defined by the claims.Those skilled in the art can be made respectively to the present invention in the essence and protection domain of the present invention
Modification or equivalent are planted, this modification or equivalent also should be regarded as being within the scope of the present invention.
Claims (5)
1. a kind of electromechanical actuator of outside hydraulic control, it is characterised in that include：
First hydraulic pipeline；
Second hydraulic pipeline；
Double-action variable displacement motor, which is used to be connected with first fluid pressure line and second fluid pressure line；
First control unit, which is passed through the first branch line and is connected with first fluid pressure line, by second branched pipe road with
The second fluid pressure line connection；First control unit has makes first branch line and second branched pipe road cut
Disconnected first position, with blocking first branch line, and make the second branched pipe road flow back the second of fuel tank
Putting and having makes first branch line backflow fuel tank, and makes the 3rd position that the second branched pipe road blocks；
Second control unit, which is passed through Three branched pipe road and is connected with first fluid pressure line, by the 4th branch line with
The second fluid pressure line connection；Second control unit has makes institute Three branched pipe road block and make the 4th branch
First position and make the Three branched pipe road turn on and make the second that the 4th branch line is blocked that pipeline is turned on
Put；
Oil cylinder is adjusted, which includes that cylinder body, the piston being arranged in the cylinder body and one end are connected with the piston, and the other end is stretched
The piston rod being connected with the swash plate of the double-action variable displacement motor after going out the cylinder body, the piston is by the plunger shaft in the cylinder body
It is divided into rod chamber and rodless cavity；The outlet of second control unit is connected with control piper, and the control piper is divided into
Quintafurcation pipeline and the 6th branch line, the quintafurcation pipeline are connected with the rodless cavity, the 6th branch line with
The rod chamber connection；
3rd control unit, which is arranged on the quintafurcation pipeline, and the 3rd control unit has makes the control pipe
First position that road is connected with the rodless cavity and block the control piper and make the of the rodless cavity backflow fuel tank
Two positions, wherein：
Second control unit has two second unit control mouths, two second unit control mouths respectively with first outside
Portion's control piper and the second external control pipeline connection, so that when the pressure in the first external control pipeline is more than described the
During pressure in two external control pipelines, second control unit is in the second position, when the first external control pipeline
When interior pressure is less than the pressure in the second external control pipeline, second control unit is in the second position；
3rd control unit has a 3rd unit control mouth, and the 3rd unit control mouth is connected with the control piper
Logical, when the pressure in the control piper increases, the 3rd control unit switches to the second position from first position.
2. the electromechanical actuator of outside hydraulic control according to claim 1, it is characterised in that first control unit has
Two first module control mouths, the first module control mouth respectively with first branch line and the second branched pipe road
Connection, so that when the pressure in first branch line is equal to the pressure in the second branched pipe road, first control
Unit processed is in first position, when the pressure in first branch line is more than the pressure in the second branched pipe road,
First control unit is in the second position, in the pressure in first branch line is less than the second branched pipe road
Pressure when, first control unit be in the 3rd position.
3. the electromechanical actuator of outside hydraulic control according to claim 1, it is characterised in that first control unit is three
Position three-way diverter valve.
4. the electromechanical actuator of outside hydraulic control according to claim 1, it is characterised in that the 3rd control unit is two
Position three-way diverter valve.
5. the electromechanical actuator of outside hydraulic control according to claim 4, it is characterised in that the 3rd control unit is ratio
Example reversal valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611195440.2A CN106523475A (en) | 2016-12-22 | 2016-12-22 | External liquid-controlled electromechanical actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611195440.2A CN106523475A (en) | 2016-12-22 | 2016-12-22 | External liquid-controlled electromechanical actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106523475A true CN106523475A (en) | 2017-03-22 |
Family
ID=58340625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611195440.2A Pending CN106523475A (en) | 2016-12-22 | 2016-12-22 | External liquid-controlled electromechanical actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106523475A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19509869A1 (en) * | 1995-03-17 | 1996-09-26 | Sauer Sundstrand Gmbh & Co | Control and regulation system for automotive hydrostatic drive |
| US5709282A (en) * | 1995-03-31 | 1998-01-20 | Fiat-Hatachi Excavators S.P.A. | Traveling control system for hydraulically driven vehicle |
| CN1695017A (en) * | 2003-01-29 | 2005-11-09 | 布鲁宁赫斯海诺马帝克有限公司 | Control of a hydrostatic gearbox |
| CN101871477A (en) * | 2010-06-22 | 2010-10-27 | 上海萨澳液压传动有限公司 | Intermediate-pressure control two-position variable axial plunger hydraulic motor |
| CN203639965U (en) * | 2013-10-16 | 2014-06-11 | 天津柳工机械有限公司 | Hydraulic device for traveling of bulldozer |
| CN106168235A (en) * | 2015-05-18 | 2016-11-30 | 丹佛斯动力***有限责任两合公司 | For controlling the apparatus and method of hydraulic machinery |
-
2016
- 2016-12-22 CN CN201611195440.2A patent/CN106523475A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19509869A1 (en) * | 1995-03-17 | 1996-09-26 | Sauer Sundstrand Gmbh & Co | Control and regulation system for automotive hydrostatic drive |
| US5709282A (en) * | 1995-03-31 | 1998-01-20 | Fiat-Hatachi Excavators S.P.A. | Traveling control system for hydraulically driven vehicle |
| CN1695017A (en) * | 2003-01-29 | 2005-11-09 | 布鲁宁赫斯海诺马帝克有限公司 | Control of a hydrostatic gearbox |
| CN101871477A (en) * | 2010-06-22 | 2010-10-27 | 上海萨澳液压传动有限公司 | Intermediate-pressure control two-position variable axial plunger hydraulic motor |
| CN203639965U (en) * | 2013-10-16 | 2014-06-11 | 天津柳工机械有限公司 | Hydraulic device for traveling of bulldozer |
| CN106168235A (en) * | 2015-05-18 | 2016-11-30 | 丹佛斯动力***有限责任两合公司 | For controlling the apparatus and method of hydraulic machinery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7243591B2 (en) | Hydraulic valve arrangement | |
| CN104214150B (en) | Double-hoist hydraulic control system and there is its engineering machinery | |
| CN106762991A (en) | The electromechanical actuator of the hydraulic control with steady regulatory function | |
| JP2016114129A (en) | Electric type operation device and work machine with electric type operation device | |
| CN109356893A (en) | The hydraulic control system of luffing loop wheel machine | |
| CN203214291U (en) | Concrete pump truck and automatic reverse pump device thereof | |
| CN207526787U (en) | The hydraulic system of coupling of petroleum casing pipe screw-on machine | |
| CN102400968A (en) | Hydraulic valve, hydraulic system and concrete pumping equipment | |
| CN106523453A (en) | Electromechanical actuator having cavity prevention function | |
| CN106523475A (en) | External liquid-controlled electromechanical actuator | |
| CN106168203A (en) | A kind of pumping system and engineering machinery | |
| CN106594002A (en) | Electromechanical actuator having throttling cushioning function | |
| CN106762990A (en) | Outside automatically controlled electromechanical actuator | |
| CN111108292B (en) | Hydraulic system | |
| CN102168696A (en) | High-low pressure switching control system, concrete pumping system and device | |
| CN108035928A (en) | A kind of regeneration support leg valve and the leg control system equipped with the valve | |
| CN106523452A (en) | Electromechanical actuator | |
| CN104176664A (en) | Hydraulic system for preventing forward running of telescopic arm of crane and crane | |
| CN106762992A (en) | Electromechanical actuator with pressure holding function | |
| CN102900718A (en) | Changeover valve device for hydraulic system and hydraulic system for crawler crane | |
| CN203394737U (en) | Concrete delivery pump integrated valve block with high-and-low voltage switching function | |
| CN105952611B (en) | A kind of absorption system piston reversing pumping device | |
| CN104481944A (en) | Depressurizing system and engineering machinery | |
| KR101669680B1 (en) | Hydraulic circuit for construction machinery | |
| CN106762993A (en) | Automatically controlled electromechanical actuator with protecting against shock function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170322 |
|
| RJ01 | Rejection of invention patent application after publication |