CN110259757A - A kind of hydraulic cylinder technology of hydrostatic support hydraulic lock - Google Patents
A kind of hydraulic cylinder technology of hydrostatic support hydraulic lock Download PDFInfo
- Publication number
- CN110259757A CN110259757A CN201910510671.5A CN201910510671A CN110259757A CN 110259757 A CN110259757 A CN 110259757A CN 201910510671 A CN201910510671 A CN 201910510671A CN 110259757 A CN110259757 A CN 110259757A
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- China
- Prior art keywords
- piston
- hydraulic
- cylinder barrel
- cylinder
- rod
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- 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
- 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
- F15B15/08—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
- F15B15/1428—Cylinders
-
- 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
- F15B15/1447—Pistons; Piston to piston rod assemblies
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- 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
- F15B15/1457—Piston rods
-
- 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
- F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
-
- 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
- F15B15/26—Locking mechanisms
-
- 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
- F15B15/26—Locking mechanisms
- F15B2015/268—Fluid supply for locking or release independent of actuator pressurisation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The present invention discloses a kind of hydrostatic support hydraulic lock hydraulic cylinder, including rod chamber, rodless cavity and unlocking chamber, three cavitys.It is characterized in that: cylinder barrel, rear end cap, rodless cavity hydraulic fluid port, left piston form rodless cavity；Cylinder barrel, left piston, lock sleeve, right piston, unlocking hydraulic fluid port form unlocking chamber；Cylinder barrel, piston rod, guide sleeve, right piston, rod chamber hydraulic fluid port form rod chamber.Right piston, lock sleeve, left piston successively fill is reloaded into cylinder barrel afterwards on the piston rod, is respectively charged into guide sleeve and rear end cap at cylinder barrel both ends.Rod chamber oil inlet and rodless cavity oil inlet are respectively equipped on cylinder barrel outer diameter.It has the advantages that structure is simple, easy to use, service life is long, safe and reliable.Oil cylinder realizes any position locking within the scope of effective travel, locks without dedicated hydraulic, and any position locking can be realized in displacement sensor etc., and completes zero mobile characteristic under by big load.The simple operation to hydraulic system is reduced, improves work efficiency, reduce manufacturing cost.
Description
Technical field:
The invention belongs to hydraulic lock manufacturing technology fields, more particularly to a kind of hydrostatic support hydraulic lock and hydraulic cylinder one
Change technology.
Background technique:
Hydraulic lock hydraulic cylinder is to combine both hydraulic lock and hydraulic cylinder function, controls liquid in hydraulic system for replacing
Push back the component of the positive chamber in road Yu anti-chamber reliable connected.It is stretched in stroke range in hydraulic system for controlling hydraulic cylinder piston rod
When stopping out or during retracting, need to increase the valve that contends with, hydraulic lock or by PLC Closed Hydraulic control system to hydraulic
The displacement sensor that cylinder is equipped with carries out reading and feeds back to servo valve to control the displacement of piston rod stretching, and the valve that contends with, hydraulic
Lock does not accomplish zero leakage.Hydraulic cylinder in a latched condition by external force when, piston rod keep a certain position when can fail, cause liquid
Absolute latch functions are not achieved in pressure cylinder piston bar auto-extending or retraction.It causes this reason there are also hydraulic cylinders in use
Fifth wheel damages sealing element, component processing precision, fluid flow characteristics.Therefore it is difficult to solve in existing hydraulic cylinder manufacturing technology
This phenomenon.
Summary of the invention:
The shortcomings that in order to overcome above-mentioned present technology, the present invention relates to a kind of hydraulic cylinder technology of hydraulic lock, hydraulic cylinders
It is hydraulic to provide a kind of hydraulic lock with zero leakage for the problem of leakage causes liquid presses piston pole auto-extending or retracts in occurring
Cylinder, exact position locking.
In order to achieve the above objectives, hydraulic lock hydraulic cylinder of the present invention, including cylinder barrel 1., piston rod 2., guide sleeve 3.,
Cylinder bottom 4., lock sleeve 5., left piston 6., right piston 7., head 8., fixing sleeve is 9..Wherein 4. and with cylinder bottom cylinder bottom connects
Cylinder barrel 1., the cylinder barrel other end connection guide sleeve 3., the piston assembly inside cylinder barrel, piston assembly by piston rod 2., right piston
7., lock sleeve 5., 6. left piston forms.Cylinder barrel 1. and cylinder bottom 4. between have adjusting nut, have rod chamber on cylinder barrel outer diameter
There is rodless cavity oil inlet on oil inlet, cylinder bottom, have unlocking chamber oil inlet on piston rod.It (position of 3 hydraulic fluid ports can be according to product
Actual installation position be adjusted).
The hydraulic lock hydraulic cylinder is made of 3 cavitys, respectively rod chamber, rodless cavity, unlocking chamber.Rod chamber has cylinder barrel
1., guide sleeve 3., 8. the head of the piston rod of right piston 7., with unlocking oil circuit 2., with unlocking hydraulic fluid port forms；Unlocking chamber has cylinder barrel
1., left piston 6., 2. the piston rod of right piston 7., with unlocking oil circuit forms；Rodless cavity have cylinder barrel 1., cylinder bottom 4., left piston 6.
Composition.
(12) 2. high pressure oil passes through lock sleeve 5. throttle orifice flows to upper layer from oil inlet into the piston rod with unlocking oil circuit,
Lock sleeve 5., left piston 6., right piston 7. before keep stable internal pressure, 5. upper surface is penetrated through lock sleeve by helicla flute, steady
So that cylinder barrel is 1. generated plastic deformation under constant-pressure effect, make cylinder barrel 1. and lock sleeve 5. between keep stable gap, formation is non-
Contact-type hydrostatic support, hydraulic lock unlock.By oil inlet, 10. 2. upper rod cavity oil inlet injection pressure oil, piston rod stretch out；?
(11) 2. injection pressure oil, piston rod retract oil inlet.
After high pressure oil is from oil inlet (12) off-load, unlocking cavity pressure is zero, together with 1. cylinder barrel can be embraced tightly with piston assembly,
Hydraulic lock is in locking state.When hydraulic cylinder rod chamber or rodless cavity oil inlet, 2. piston rod is in illegal state and is absolute value,
Namely 2. piston " 0 " is displaced piston rod when by external force (external force is in the maximum endurance range of design) pressure or drawing.
Detailed description of the invention:
Fig. 1 is the structural schematic diagram of hydrostatic support hydraulic lock and hydraulic cylinder of the present invention.
In figure cylinder barrel 1., piston rod 2., guide sleeve 3., cylinder bottom 4., lock sleeve 5., left piston 6., right piston 7., head 8., Gu
Fixed set is 9.
Specific embodiment:
With reference to the accompanying drawing and example invention is further described in detail.
As shown in Figure 1, a kind of hydrostatic support hydraulic lock and hydraulic cylinder, the cylinder barrel 4. and with cylinder bottom connected including cylinder bottom 1., cylinder
The guide sleeve of cylinder other end connection 3., across guide sleeve 3. lock sleeve 5., left piston 6., 7. 9. right piston fixed with fixing sleeve
Piston rod 2. on.
The hydraulic lock hydraulic cylinder is made of 3 cavitys, respectively rod chamber, rodless cavity, unlocking chamber.Rod chamber have cylinder barrel 1., lead
To set 3., 8. the head of the piston rod of right piston 7., with unlocking oil circuit 2., with unlocking hydraulic fluid port forms；Unlocking chamber have cylinder barrel 1., it is left
Piston is 6., 2. the piston rod of right piston 7., with unlocking oil circuit forms；Rodless cavity by cylinder barrel 1., cylinder bottom 4., 6. left piston forms.
When (12) 2. high pressure oil passes through lock sleeve 5. throttle orifice flows to upper layer from oil inlet into the piston rod with unlocking oil circuit, locking
It is fixed 5., left piston 6., right piston 7. before keep stable internal pressure, 5. upper surface is penetrated through lock sleeve by helicla flute, in stabilization
So that cylinder barrel is 1. generated plastic deformation under pressure effect, make cylinder barrel 1. and lock sleeve 5. between keep stable gap, formation is non-to be connect
Touching type hydrostatic support, hydraulic lock unlock.By oil inlet, 10. 2. upper rod cavity oil inlet injection pressure oil, piston rod stretch out；Into
(11) 2. injection pressure oil, piston rod retract hydraulic fluid port.
After high pressure oil is from oil inlet (12) off-load, unlocking cavity pressure is zero, together with 1. cylinder barrel can be embraced tightly with piston assembly,
Hydraulic lock is in locking state.When hydraulic cylinder rod chamber or rodless cavity oil inlet, 2. piston rod is in illegal state and is absolute value,
Namely 2. piston " 0 " is displaced piston rod when by external force (external force is in the maximum endurance range of design) pressure or drawing.
Claims (4)
1. a kind of hydrostatic support hydraulic lock hydraulic cylinder such as Fig. 1, characteristically in include cylinder barrel 1., piston rod 2., guide sleeve 3., cylinder
Bottom 4., lock sleeve 5., left piston 6., right piston 7., head 8., the right piston 7., lock sleeve 5., 6. left piston successively fills
Pass through afterwards on the piston rod fixture nut 9. 2. tightened with piston rod be fixed in piston rod 2. on form hydraulic lock hydraulic cylinder
Piston assembly；Left piston 6., right piston be 7. located at lock sleeve 5. two sides；Piston assembly is by special tooling using high press fitting
Enter cylinder barrel 1. in, 1. 4. cylinder barrel is attached with cylinder bottom by screw thread, adjust good position after be 10. fixed with cylinder barrel locknut；It leads
1. screw thread is attached with cylinder barrel after 3. passing through piston rod to set 2..
2. according to hydraulic lock hydraulic cylinder described in claims 1 it is characterized in that the structural member forms three closed chambers
Body, respectively rodless cavity, unlocking chamber, rod chamber.Lock sleeve 5. with the left piston of two sides 6., right piston 7. and internal unlocking oil circuit
Form unlocking chamber, left piston 6., cylinder bottom 4., cylinder barrel 1. form rodless cavity, right piston 7., guide sleeve 3., piston rod 2., cylinder barrel 1.
Form rod chamber.
3. making the elasticity of cylinder barrel material in unlocking chamber injection high pressure oil according in hydraulic lock hydraulic cylinder described in claims 2
Modulus makes it generate retrospective deformation, and cylinder barrel is made 1. to keep stable gap between piston assembly, forms non-contact type static pressure branch
It holds, hydraulic lock unlock.At this time in hydraulic cylinder rodless cavity or rod chamber into pressure oil, 2. hydraulic cylinder piston rod can normally stretch fortune
It is dynamic；When release in unlocking chamber, unlocking cavity pressure is zero, together with 1. cylinder barrel can be embraced tightly with piston assembly, at hydraulic lock
In locking state.When hydraulic cylinder rod chamber or rodless cavity oil inlet, 2. piston rod is in illegal state and is absolute value, that is, living
2. piston " 0 " is displaced stopper rod when by external force (external force is in the maximum endurance range of design) pressure or drawing.
4. be in locking state according to hydraulic lock described in claims 3, coupling mechanism force is the length according to lock sleeve 5.
It spends related with the elasticity modulus of diameter, cylinder barrel 1..The structure be it is mechanical, coupling mechanism force is big, it can be achieved that hydraulic cylinder zero is revealed, living
Stopper rod 2. within the scope of effective travel can any position locked, reaction speed is fast, structure is simple, at low cost.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910510671.5A CN110259757A (en) | 2019-06-13 | 2019-06-13 | A kind of hydraulic cylinder technology of hydrostatic support hydraulic lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910510671.5A CN110259757A (en) | 2019-06-13 | 2019-06-13 | A kind of hydraulic cylinder technology of hydrostatic support hydraulic lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110259757A true CN110259757A (en) | 2019-09-20 |
Family
ID=67918132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910510671.5A Pending CN110259757A (en) | 2019-06-13 | 2019-06-13 | A kind of hydraulic cylinder technology of hydrostatic support hydraulic lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110259757A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848190A (en) * | 2019-09-25 | 2020-02-28 | 张家口凯航液压科技有限公司 | Integrated load sensitive flow divider valve |
| CN110905871A (en) * | 2019-12-16 | 2020-03-24 | 广东志成电液科技有限公司 | Bus type electro-hydraulic cylinder with mechanical locking function and control method thereof |
| CN113217501A (en) * | 2021-04-30 | 2021-08-06 | 韶关液压件厂有限公司 | Hydraulic cylinder structure with clamp inside and using method thereof |
| CN114508521A (en) * | 2022-03-04 | 2022-05-17 | 烟台星辉航空液压有限公司 | Locking device for holding shafts tightly at any position |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203560201U (en) * | 2013-09-27 | 2014-04-23 | 北京航天发射技术研究所 | Built-in displacement sensor capable of interferential and internal locking of hydraulic cylinder |
| CN103967865A (en) * | 2014-05-29 | 2014-08-06 | 徐州徐工液压件有限公司 | Hydraulic cylinder with position locking function |
| CN107355439A (en) * | 2017-08-08 | 2017-11-17 | 华南理工大学 | A kind of integrated-type internal-expansion type mechanical interlocking hydraulic leg and its operation method |
| CN107401533A (en) * | 2017-08-08 | 2017-11-28 | 华南理工大学 | A kind of end control type internal-expansion type mechanical interlocking hydraulic jack and its operation method |
-
2019
- 2019-06-13 CN CN201910510671.5A patent/CN110259757A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203560201U (en) * | 2013-09-27 | 2014-04-23 | 北京航天发射技术研究所 | Built-in displacement sensor capable of interferential and internal locking of hydraulic cylinder |
| CN103967865A (en) * | 2014-05-29 | 2014-08-06 | 徐州徐工液压件有限公司 | Hydraulic cylinder with position locking function |
| CN107355439A (en) * | 2017-08-08 | 2017-11-17 | 华南理工大学 | A kind of integrated-type internal-expansion type mechanical interlocking hydraulic leg and its operation method |
| CN107401533A (en) * | 2017-08-08 | 2017-11-28 | 华南理工大学 | A kind of end control type internal-expansion type mechanical interlocking hydraulic jack and its operation method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848190A (en) * | 2019-09-25 | 2020-02-28 | 张家口凯航液压科技有限公司 | Integrated load sensitive flow divider valve |
| CN110905871A (en) * | 2019-12-16 | 2020-03-24 | 广东志成电液科技有限公司 | Bus type electro-hydraulic cylinder with mechanical locking function and control method thereof |
| CN113217501A (en) * | 2021-04-30 | 2021-08-06 | 韶关液压件厂有限公司 | Hydraulic cylinder structure with clamp inside and using method thereof |
| CN114508521A (en) * | 2022-03-04 | 2022-05-17 | 烟台星辉航空液压有限公司 | Locking device for holding shafts tightly at any position |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190920 |