CN108679038A - A kind of novel mechanical self-locking hydraulic actuator - Google Patents
A kind of novel mechanical self-locking hydraulic actuator Download PDFInfo
- Publication number
- CN108679038A CN108679038A CN201810769073.5A CN201810769073A CN108679038A CN 108679038 A CN108679038 A CN 108679038A CN 201810769073 A CN201810769073 A CN 201810769073A CN 108679038 A CN108679038 A CN 108679038A
- Authority
- CN
- China
- Prior art keywords
- cylinder barrel
- piston rod
- screw rod
- hydraulic
- rod
- 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
- 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
-
- 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
- F15B15/262—Locking mechanisms using friction, e.g. brake pads
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
A kind of novel mechanical self-locking hydraulic actuator, including cylinder barrel, piston rod, hydraulic fluid port one and hydraulic fluid port two, it is characterised in that further include screw rod, clutch-plate and hydraulic motor；The piston rod right end is mounted in the cylinder barrel, and left end stretches out on the left of the cylinder barrel, and the piston rod inner is hollow structure and is tapped with internal thread, left end closing, and right end opens；Barrel is provided with screw hole on the right side of the cylinder barrel, the spiro rod length is more than the cylinder barrel length, the external screw thread to match with the piston rod internal thread is tapped in one segment length of screw rod left end, the screw rod left end in the screw hole from stretching into the cylinder barrel and being stretched into the hollow structure of the piston rod by the internal thread and external screw thread cooperation, and the externally threaded helix angle is less than Self-locking angle on the screw rod；The screw rod right end stretches out outside the cylinder barrel, and is connected with the hydraulic motor by clutch-plate described in two panels；The hydraulic fluid port one and hydraulic fluid port two are separately positioned on the left and right ends of the cylinder barrel side wall.
Description
Technical field
The present invention relates to hydraulic actuator technical fields, more particularly to a kind of novel mechanical self-locking hydraulic actuator.
Background technology
With the raising of Hydraulic Elements manufacturing technology level and the fast development of hydraulic technique, hydraulic control system exists
All conglomeraties play considerable effect.However hydraulic system is because there are mechanical loss, the pressure loss, leakages in transmission
Situations such as loss, occurs, and can cause hydraulic actuator that can not accurately realize predeterminated target, or even can be led due to depression of bearing force
The generation of major accident is caused, therefore ensures that the steady load ability of hydraulic actuator is in the important research of current hydraulic system
Hold.
Invention content
The purpose of the present invention is to solve existing hydraulic cylinders in load conditions, the problem of sealing due to oil leak, leads
The actuator of cause cannot accurately be moved to the problem of precalculated position.The present invention provides a kind of execution of novel mechanical self-locking hydraulic pressure
Device, including cylinder barrel, piston rod, hydraulic fluid port one and hydraulic fluid port two, it is characterised in that further include screw rod, clutch-plate and hydraulic motor；Its
In,
The piston rod right end is mounted in the cylinder barrel, and left end stretches out on the left of the cylinder barrel, the piston rod inner
For hollow structure and it is tapped with internal thread, left end closing, right end opens；
Barrel is provided with screw hole on the right side of the cylinder barrel, and the spiro rod length is more than the cylinder barrel length, the screw rod left end
The external screw thread to match with the piston rod internal thread is tapped in one segment length, the screw rod left end stretches into institute from the screw hole
It states in cylinder barrel and is stretched into the hollow structure of the piston rod by the internal thread and external screw thread cooperation, it is described on the screw rod
Externally threaded helix angle is less than Self-locking angle；
The screw rod right end stretches out outside the cylinder barrel, and is connected with the hydraulic motor by clutch-plate described in two panels；
The hydraulic fluid port one and hydraulic fluid port two are separately positioned on the left and right ends of the cylinder barrel side wall.
Further, when hydraulic oil pushes the piston rod to move left and right, the hydraulic motor passes through the clutch-plate
It drives the screw rod while rotating so that the movement of the piston rod is synchronous with the rotation of screw rod holding.
Further, after the piston rod reaches precalculated position, hydraulic oil fuel cut-off, the piston rod stops movement
The hydraulic motor is simultaneously stopped operating simultaneously, and the screw rod is simultaneously stopped rotation.
The present invention provides a kind of novel mechanical self-locking hydraulic actuator, can be realized reliable while bearing big load
Clamping simultaneously can function pinpoint at an arbitrary position.In steady load, moreover it is possible to prevent from causing to load energy due to leakage
The problem of power decline causes piston rod to fall back.
Description of the drawings
Fig. 1 is the integrally-built explosive view of the present invention.
Fig. 2 is the sectional view of cylinder barrel in the present invention, piston rod, screw rod and clutch-plate
In figure：1 cylinder barrel, 2 hydraulic fluid ports one, 3 hydraulic fluid ports two, 4 piston rods, 5 screw rods, 6 clutch-plates, 7 hydraulic motors
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.Meanwhile orientation described by claims of the present invention and specification is with Figure of description
Subject to shown orientation, it should be understood that when the present invention, which puts orientation, to change, the orientation accordingly changes.
The present invention provides a kind of novel mechanical self-locking hydraulic actuator structural schematic diagrams, referring to Fig. 1, Fig. 2.Described one
Planting novel mechanical self-locking hydraulic actuator includes：Cylinder barrel 1, hydraulic fluid port 1, hydraulic fluid port 23, piston rod 4, screw rod 5, clutch-plate 6, hydraulic pressure
Motor 7.
It is a kind of explosive view of novel mechanical self-locking hydraulic actuator as shown in Figure 1, 2, including cylinder barrel 1, hydraulic fluid port 1, oil
Mouth 23, piston rod 4, screw rod 5, clutch 6, hydraulic motor 7.It is hollow structure inside the piston rod 4, in hollow structure
Surface is tapped with internal thread, and 5 outer surface of the screw rod is designed with external screw thread and cooperates with the female piston rod 4,
The externally threaded helix angle for wherein designing the screw rod 5 is less than its Self-locking angle.4 left end of the piston rod is from the cylinder barrel 1
It stretches out, right end is sleeved in the cylinder barrel 1, by inputting high pressure oil in hydraulic fluid port 23, pushes piston rod 4 to be moved to the left, when needing
When stating piston rod 4 and moving right, high pressure oil is inputted by hydraulic fluid port 1, the piston rod 4 is pushed to move right.
5 length of the piston rod is more than the length of the cylinder barrel 1, and left end has to be externally threaded in a segment length, left
End is extend into from 1 right end of the cylinder barrel in the cylinder barrel 1, and the hollow knot of the piston rod 4 is rotated by screw-thread fit
In structure.
5 right end of the piston rod is connected by two panels clutch-plate 6 with hydraulic motor 7.The hydraulic motor 7 passes through clutch-plate
6 drive screw rod 5 to rotate so that the movement of piston rod 4 and the mobile holding synchronous regime of screw rod 5.Piston rod 4 reaches precalculated position
Afterwards, 23 fuel cut-off of hydraulic fluid port, at the same screw rod 5 due to hydraulic motor 7 stops operating and under the rubbing action of two clutch-plates 6
Slow down and stops operating.Since 5 externally threaded helix angle of screw rod realizes self-locking less than Self-locking angle.
Claims (3)
1. a kind of novel mechanical self-locking hydraulic actuator, including cylinder barrel, piston rod, hydraulic fluid port one and hydraulic fluid port two, it is characterised in that also
Including：Screw rod, clutch-plate and hydraulic motor；Wherein,
The piston rod right end is mounted in the cylinder barrel, and left end stretches out on the left of the cylinder barrel, during the piston rod inner is
Hollow structure is simultaneously tapped with internal thread, and left end closing, right end opens；
Barrel is provided with screw hole on the right side of the cylinder barrel, and the spiro rod length is more than the cylinder barrel length, one section of the screw rod left end
The external screw thread to match with the piston rod internal thread is tapped in length, the screw rod left end stretches into the cylinder from the screw hole
It is stretched into the hollow structure of the piston rod in cylinder and by the internal thread and external screw thread cooperation, the outer spiral shell on the screw rod
The helix angle of line is less than Self-locking angle；
The screw rod right end stretches out outside the cylinder barrel, and is connected with the hydraulic motor by clutch-plate described in two panels；
The hydraulic fluid port one and hydraulic fluid port two are separately positioned on the left and right ends of the cylinder barrel side wall.
2. a kind of novel mechanical self-locking hydraulic actuator according to claim 1, it is characterised in that：When hydraulic oil pushes institute
When stating piston rod and moving left and right, the hydraulic motor drives the screw rod to rotate simultaneously by the clutch-plate so that the work
The movement of stopper rod is synchronous with the rotation of screw rod holding.
3. a kind of novel mechanical self-locking hydraulic actuator according to claim 1, it is characterised in that：When the piston rod arrives
Up to after precalculated position, hydraulic oil fuel cut-off, the piston rod stops the mobile while described hydraulic motor and is simultaneously stopped operating, institute
It states screw rod and is simultaneously stopped rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810769073.5A CN108679038A (en) | 2018-07-13 | 2018-07-13 | A kind of novel mechanical self-locking hydraulic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810769073.5A CN108679038A (en) | 2018-07-13 | 2018-07-13 | A kind of novel mechanical self-locking hydraulic actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108679038A true CN108679038A (en) | 2018-10-19 |
Family
ID=63813874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810769073.5A Pending CN108679038A (en) | 2018-07-13 | 2018-07-13 | A kind of novel mechanical self-locking hydraulic actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108679038A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973464A (en) * | 2019-04-22 | 2019-07-05 | 武汉华液传动制造有限公司 | Hydraulic, manual double-driving moves cylinder and application method and self-locking method |
| CN113404741A (en) * | 2021-06-28 | 2021-09-17 | 徐州重型机械有限公司 | Driving cylinder, vehicle steering system and vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060207421A1 (en) * | 2003-08-19 | 2006-09-21 | Supraventures Ag | Actuator |
| EP2239470A2 (en) * | 2009-04-09 | 2010-10-13 | Neumeister Hydraulik GmbH | Cylinder piston unit with locking means and method for locking and unlocking the same |
| CN103775430A (en) * | 2013-11-15 | 2014-05-07 | 杜雨轩 | Spiral self-locking hydraulic cylinder |
| CN107806456A (en) * | 2017-12-06 | 2018-03-16 | 富强鑫（宁波）机器制造有限公司 | One kind die sinking positional cylinder |
| CN108061076A (en) * | 2017-11-15 | 2018-05-22 | 北京新立机械有限责任公司 | A kind of hydraulic leg mechanical locking device |
-
2018
- 2018-07-13 CN CN201810769073.5A patent/CN108679038A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060207421A1 (en) * | 2003-08-19 | 2006-09-21 | Supraventures Ag | Actuator |
| EP2239470A2 (en) * | 2009-04-09 | 2010-10-13 | Neumeister Hydraulik GmbH | Cylinder piston unit with locking means and method for locking and unlocking the same |
| CN103775430A (en) * | 2013-11-15 | 2014-05-07 | 杜雨轩 | Spiral self-locking hydraulic cylinder |
| CN108061076A (en) * | 2017-11-15 | 2018-05-22 | 北京新立机械有限责任公司 | A kind of hydraulic leg mechanical locking device |
| CN107806456A (en) * | 2017-12-06 | 2018-03-16 | 富强鑫（宁波）机器制造有限公司 | One kind die sinking positional cylinder |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973464A (en) * | 2019-04-22 | 2019-07-05 | 武汉华液传动制造有限公司 | Hydraulic, manual double-driving moves cylinder and application method and self-locking method |
| CN109973464B (en) * | 2019-04-22 | 2024-03-19 | 武汉华液传动制造有限公司 | Hydraulic and manual double-driving cylinder, use method and self-locking method |
| CN113404741A (en) * | 2021-06-28 | 2021-09-17 | 徐州重型机械有限公司 | Driving cylinder, vehicle steering system and vehicle |
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|---|---|---|---|
| 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: 20181019 |