CN108591192A - A kind of multiposition actuator for hydraulic system - Google Patents
A kind of multiposition actuator for hydraulic system Download PDFInfo
- Publication number
- CN108591192A CN108591192A CN201810764383.8A CN201810764383A CN108591192A CN 108591192 A CN108591192 A CN 108591192A CN 201810764383 A CN201810764383 A CN 201810764383A CN 108591192 A CN108591192 A CN 108591192A
- Authority
- CN
- China
- Prior art keywords
- valve
- hydraulic
- piston
- actuator
- hydraulic system
- 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.)
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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
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/085—Servomotor systems incorporating electrically operated control means using a data bus, e.g. "CANBUS"
-
- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
-
- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
-
- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B2015/206—Combined actuation, e.g. electric and fluid actuated
Abstract
The invention discloses a kind of multiposition actuator for hydraulic system, which includes：The trigger of at least three kinds states can be positioned, the switch being operatively engaged with the pump in hydraulic system, the hydraulic reservoir in hydraulic valve and hydraulic system between hydraulic cylinder and piston, wherein trigger can be positioned at the neutral state that (i) valve is closed and switch is opened, (ii) forward travel state that valve is closed and switch is closed, and (iii) reverse state valve is opened, switch is opened.The present invention a kind of multiposition actuator for hydraulic system, can it is multi-faceted, easily control hydraulic power system.
Description
Technical field
The present invention relates to hydraulic system technical fields, and in particular to a kind of multiposition actuator group for hydraulic system
Part.
Background technology
Powered hydraulic tool is used in numerous applications, to provide desired machine to the user in being widely applied range
Tool advantage, for suppressing, shaping, crimp, cut or otherwise manipulating one or more workpiece.One sample application is to use
In the crimping tool of manufacture electrical connection, such as in the end of electric wire by terminal compression joint, another sample application is in cutting element
In, hydraulic pressure provides the power of cutting workpiece.Traditional hydraulic tool generally comprises tool body, fluid reservoir, hydraulic pump, restriction
The cylinder of chamber and can piston of the indoor pressing stroke of transit chamber (i.e. forward stroke) from initial position to high-level position, general
The effect of pressurized fluid injecting chamber, these tools may include a variety of different work heads, these work heads removably connect
It is connected in main body, and is suitable for by piston operation with workpiece manipulation as needed.Traditional tool generally includes manual operation
Fluid reflux valve, referred to herein as " control valve " can reduce the pressure in chamber, to accommodate when manual open
Fluid in the chamber returns to reservoir so that piston is with the help of spring or other biasing members back to the contracting in chamber
Return is set.Typical fluid reflux valve is biased to close, and is opened manually when by lower button or control stick, by flow of pressurized
Body is discharged from chamber.In certain tools, button preferably must be held in recessed position, to be emptied completely the chamber of hydraulic fluid and complete
Full reduced time piston, these tools also typically include the relief valve being automatically brought into operation so that the pressure of the fluid of injecting chamber is no more than
Predetermined threshold.Relief valve generally includes to close the movable needle of fluid escapes opening and the spring by needle holding in the opening, spring
It is calibrated such that only when pressure reaches predetermined threshold in the power applied on needle, the effect of the Fluid pressure of needle in the chamber
Under automatically move, referred to herein as " setting pressure " of pressure relief valve, when pressure is less than predetermined threshold, referred to herein as relief valve
" recirculation pressure ".Traditional electric tool also typically includes the switch for operating motor, and transfer tube is by hydraulic fluid
It is pumped from liquid storage device to cylinder, opening for motor is opened and closed using trigger or similar control device on most of tools
It closes, the trigger of motor and the button of opening return valve separate and different.Therefore, this configuration need individually operated trigger and
Control valve button, wherein operator must press trigger and operate motor to close motor switch, and individually press control valve by
Button that hydraulic fluid is discharged from cylinder.Although satisfactory in many aspects, it is known that powered hydraulic tool by various
The problem of, therefore, there is still a need for using the new hydraulic system and tool of this system.
Technical solution
The invention mainly solves the technical problem of providing a kind of multiposition actuators for hydraulic system, special
Sign is that the actuator includes：The trigger that at least three kinds states can be positioned operationally connects with the pump in hydraulic system
The switch of conjunction, the hydraulic reservoir in hydraulic valve and hydraulic system between hydraulic cylinder and piston, wherein trigger can be positioned at (i)
The neutral state that valve is closed and switch is opened, the forward travel state that (ii) valve is closed and switch is closed, and (iii) reversed shape
State valve is opened, and switch is opened.
Optionally, wherein when trigger is navigated to neutral state, pump is not run, without hydraulic fluid in cylinder and
It is flowed between container, and piston is static.
Optionally, wherein when trigger is navigated to forward condition, pump operation, hydraulic fluid flows into cylinder, piston quilt
Extend.
Optionally, wherein when trigger is navigated to inverse state, hydraulic fluid flows to container, piston contracting from cylinder
It returns.
The beneficial effects of the invention are as follows：
The present invention a kind of multiposition actuator for hydraulic system, can it is multi-faceted, easily control hydraulic pressure
Dynamical system.
Description of the drawings
Fig. 1 is the schematic diagram according to the hydraulic system of this theme.
Fig. 2 is the schematic diagram according to the modification hydraulic system of this theme.
Fig. 3 is the schematic cross section according to the hydraulic tool of this theme.
Fig. 4 is the schematic diagram according to the multiposition actuator of this theme.
Embodiment
The preferred embodiments of the present invention will be described in detail below so that advantages and features of the invention can be easier to by
It will be appreciated by those skilled in the art that so as to make a clearer definition of the protection scope of the present invention.
In one embodiment as shown in fig. 1, the cylinder of limit chamber 21 is included according to the hydraulic system of this theme 1
20, piston 31 is movably at least partially disposed in chamber 21, piston 31 have rear surface 33 and front surface 34, and by
It is configured to execute work on workpiece.
As shown in Figure 1, piston 30 is pushed to the offset position towards the rear end 23 of cylinder by piston return spring 32,
The rear end of cylinder is also referred to as air cylinder base 23, and air cylinder base 23 is connected to supply line 50, the first return line 70 and second
Return line 80, supply line and first and second lines of return provide fluid communication, supply pipe between liquid storage device 40 and chamber 21
Line 50 is configured as providing fluid communication between reservoir 40 and chamber.As shown in Figs. 1-3, system and tool include pump 60, are used
In pumping hydraulic fluid by feeding pipe, into chamber, and relative to the rear surface of piston 33, so as to make piston 30 relative to
Chamber advances.In one embodiment as shown in fig. 1, hydraulic system is electrohydraulic system, wherein pump 60 is connected to motor 120
Or other kinds of motor, it is connected to power supply 140, when motor switch 130 is closed, motor 120 obtains dynamic from power supply 140
Power is with transfer tube 60, to promote hydraulic fluid to reach room 21 by supply line 50 from liquid storage device 40, and against piston 30
Rear surface 33, for activating the switch 130 of motor to be controlled by actuator 110.In certain embodiments, communication channel can be machine
Tool connects, according to this theme, it is to be understood that and pump can also be manually operated, rather than by motor, therefore do not utilize
Switch 130.When hydraulic fluid is pumped into chamber 21 and rear surface 33 relative to piston by feeding pipe, hydraulic pressure is in chamber
Increase in interior and piston rear surface, piston is promoted to hold movement, this movement of piston to be known as forward relative to chamber and cylinder
" forward stroke " of " advance ", " advance ", " pressing stroke " or piston, the front end of cylinder is also referred to as cylinder head.In forward stroke
In, piston return spring 32 is compressed between the front surface 34 of piston and cylinder head 22, when pressure is discharged from chamber, piston
Piston 30 is moved to the rear end 23 of cylinder by return spring.This towards cylinder rear end movement referred to as " retraction ", " retraction ",
" retraction stroke " of " retraction ", " retraction ", " counterattack " or piston.First return line 70 is provided between chamber 21 and liquid storage device 40
Be in fluid communication, and be configured as hydraulic fluid being transported to liquid storage device 40 from chamber 21, hydraulic system and tool include using
In the control valve 90 for the flow for adjusting the hydraulic fluid in the first return pipeline, the construction of control valve 90 is not by the special of this theme
Limitation, and may include one or more guiding valves, gate valve, ball valve etc. comprising flow control member 96 (see Fig. 3) is used for
The fluid flowing in the first reflux pipeline is limited, and " fluid control component " is part control valve being inserted into fluid stream, such as
Shown in Fig. 3, control valve 90 can be guiding valve, and wherein flow control member 96 is inserted into the fluid stream of the first reflux pipeline 70
Spool, flow control member can take other forms, such as form associated with other kinds of valve according to this theme,
For example, flow control member can be the gate in gate valve, the ball in ball valve, butterfly or disk in inclined plate valve, ball valve or
Diaphragm etc. in the plug of rotary valve, diaphragm valve.
As shown in Figure 1, actuator 110 is configured as passing through each position operation and control by actuator communication port 111
Valve.In one embodiment, actuator communication port 111 includes the control valve actuator 95 for being connected to flow control member 96,
Actuator communication channel 111 may include other means of communication, and actuator is used for mobile valve, actuator can by control valve from
The operation of first position 91 that bias is opened is to the 2nd 92 and the 3rd 93 position closed, so that flow control member is inserted into the
In the fluid stream of one return line, to the flowing of the hydraulic fluid in the first return line 70 of limitation.Control valve 90 is by spring
94 are biased into open first position 91, by control valve operation to the 2nd 92 or the 3rd 93 position of closing, to compression control
Valve spring 94, control valve 90 can be biasings or without biasing, and can further be biased to first by other means
Position 91, for example, the actuator 110 wherein biased promotes control valve open first position.In one aspect, control valve itself is not no
Including biasing element, such as spring (i.e. without biasing), but first position is only pushed to by the actuator of biasing, works as actuating
For device no longer at the 2nd 92 or the 3rd 93 closed position operation control valve, control valve will return to the first open position 91 of bias,
To allow hydraulic fluid to flow to liquid storage device from chamber.According to this theme, at least one of control valve and actuator are biased,
So that control valve is normally opened in first position 91.In one embodiment according to this theme, when control valve is in the first, second He
When being moved between the third place, flow control member is in the fluid return line of return valve along fluid flow direction non-parallel
Side shifts up.It is appreciated that when referring to the fluid flow direction on " control valve ", it refers in the first return pipeline
Fluid flow direction, in the side with the position of control valve direct neighbor and with the control valve of fluid communication, first line of return
Chamber is led in part.
Relief valve 100 and control valve 90 parallel connection, relief valve and control valve between chamber and liquid storage device are independent of one another
Ground works, and not serial communication, hydraulic fluid can flow to liquid storage by one in pressure reducing valve and control valve from chamber
Device, without passing through another valve, wherein pressure relief valve and the control valve parallel connection between chamber and liquid storage device.Fig. 2 shows
The modified system 1A of system 1 shown in FIG. 1,90,100 parallel communications of valve, 70,80 parallel communications of return line, in Fig. 2 are gone out
In, valve 90,100 is connected in parallel, and return line 70, and 80 link together before being connected to chamber and cistern, valve
190,100 parallel communications, and 70,80 parallel communications of return line.Referring specifically to Fig. 2 shows modified system 1A including previous
Chamber 21, relief valve 100, pump 60, actuator 110, control valve 90 and the liquid storage device 40 of description, it can be seen that 100 He of relief valve
Control valve 90 is separated from each other and mutual indepedent and parallel connection.It may also be seen, however, that supply line 50, first line of return 70 and second
The line of return 80 all point-blank links together before being connected to chamber.Equally, this three line 50,70,80 with storage
It also links together on another straight line before 40 connection of layer.Connect with cylinder chamber 21 or liquid storage device 40 although Fig. 2 is depicted
Logical the first reflux pipeline 70 and the second reflux pipeline 80 engaged before, it will be appreciated that valve 90,100 is still parallel
, with concatenated on the contrary, wherein hydraulic fluid flows to cylinder chamber 21 from liquid storage device 40, vice versa, will firstly flow over decompression for this
One in valve 100 and control valve 90, then another flowing.According to this theme, the hydraulic system and tool of this theme include
Actuator 110, also referred to as trigger, actuator is configured as by turning off the switch 130 come pump operation 60, and is configured
For operation control valve 90.As shown in Figure 1, actuator 110 is communicated by actuator communication port 111 with control valve 90, Huo Zheji
Tool is connected to control valve, and actuator 110 can be in the first position 91 that bias is opened and the second position 92 being closed and third position
Operation control valve 90 between setting 93.One embodiment tool is depicted in figure 3, and part therein is shown specifically in figure, Fig. 3
It shows the hydraulic tool 10 according to this theme, and includes tool body 11, which at least partially defines circle
Cylinder 20.In one aspect, cylinder is closed and is supported in tool body at least partly, and cylinder defines chamber 21, wherein
Piston 30 is movably disposed, and piston 30 is biased in piston return spring 32 on the retracted position of rear end 23 of cylinder, piston
Return spring is arranged between the front surface 34 of piston 30 and the front end 22 of cylinder 20, and piston 30 can be by will be in chamber 21
Hydraulic pressure is applied to the rear surface 33 of piston and advances towards the front end of cylinder.
Fig. 4 is according to the schematic diagram of the alternative system 200 of this theme, and system 200 includes multiposition actuator 230,
It is operationally selectively engaged with switch 260 and guiding valve 270, and actuator 230 is supported on support element 250, support element
It can be pivotable support element, and include spring or other biasing members 210,220, in biasing or actuator being promoted to be in
Between or " stopping " position.Actuator 230 is operatively engaged with switch 260 so that when the end of actuator 230 234 is along arrow 1
Direction movement when, piston moves on " forward " direction.The end 234 of actuator is pressed on spring 220, compressed spring
220 and turn off the switch 260, to make hydraulic fluid pump (not shown) work, this causes " forward " of piston to move.Actuator
230 end 232 is moved along the direction of arrow 2, and compressed spring 210 simultaneously opens guiding valve 270, and guiding valve 270 is located at hydraulic fluid pipe
Section 272 and hydraulic cylinder and 274 are in the hydraulic fluid conduit between hydraulic cylinder.
The sequencing of above example is only for ease of description, can not represent the quality of embodiment.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；
And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (4)
1. a kind of multiposition actuator for hydraulic system, which is characterized in that the actuator includes：Can position to
The trigger of few three kinds of states, the switch being operatively engaged with the pump in hydraulic system, the hydraulic pressure between hydraulic cylinder and piston
Hydraulic reservoir in valve and hydraulic system, wherein trigger can be positioned at the neutral state that (i) valve is closed and switch is opened,
(ii) forward travel state that valve is closed and switch is closed, and (iii) reverse state valve are opened, and switch is opened.
2. a kind of multiposition actuator for hydraulic system according to claim 1, it is characterised in that：Wherein,
When trigger is navigated to neutral state, pump is not run, and is flowed between cylinder and container without hydraulic fluid, and piston
It is static.
3. a kind of multiposition actuator for hydraulic system according to claim 1, it is characterised in that：Wherein when
When trigger is navigated to forward condition, pump operation, hydraulic fluid flows into cylinder, and piston is extended.
4. a kind of multiposition actuator for hydraulic system according to claim 1, it is characterised in that：Wherein when
When trigger is navigated to inverse state, hydraulic fluid flows to container from cylinder, and piston is retracted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810764383.8A CN108591192A (en) | 2018-07-12 | 2018-07-12 | A kind of multiposition actuator for hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810764383.8A CN108591192A (en) | 2018-07-12 | 2018-07-12 | A kind of multiposition actuator for hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108591192A true CN108591192A (en) | 2018-09-28 |
Family
ID=63618261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810764383.8A Withdrawn CN108591192A (en) | 2018-07-12 | 2018-07-12 | A kind of multiposition actuator for hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108591192A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105899317A (en) * | 2014-04-23 | 2016-08-24 | 里奇工具公司 | Hydraulic press tool |
-
2018
- 2018-07-12 CN CN201810764383.8A patent/CN108591192A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105899317A (en) * | 2014-04-23 | 2016-08-24 | 里奇工具公司 | Hydraulic press tool |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180928 |