CN107524654B - A kind of vane type servo oscillating hydraulic cylinder and apply its mechanical equipment - Google Patents
A kind of vane type servo oscillating hydraulic cylinder and apply its mechanical equipment Download PDFInfo
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- CN107524654B CN107524654B CN201711009937.5A CN201711009937A CN107524654B CN 107524654 B CN107524654 B CN 107524654B CN 201711009937 A CN201711009937 A CN 201711009937A CN 107524654 B CN107524654 B CN 107524654B
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- oil
- bearing
- thrust bearing
- rotor
- end cap
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Classifications
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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
- F15B15/12—Characterised by the construction of the motor unit of the oscillating-vane or curved-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
Abstract
The invention belongs to mechanical manufacturing fields, especially a kind of vane type servo oscillating hydraulic cylinder and apply its mechanical equipment, including drive end bearing bracket, rear end cap, stator and rotor, stator and rotor are assemblied between drive end bearing bracket and rear end cap, rotor is placed in stator interior, N number of oil pocket is equipped between rotor and stator, the present invention in drive end bearing bracket and rear end cap by arranging oil circuit, and pass through the adjusting compensation of throttle valve, the centripetal hydrostatic bearing of radial direction and axial thrust hydrostatic bearing are formed between end cap and rotor, play low friction startup, anti-bias load, the effects that low friction, and frame mode is reasonable, reduce assembly difficulty and assembly space, effectively expand application range, and the fit-up gap of oscillating cylinder can be further reduced, prevent oil leak, it is significant during the use of precision equipment.
Description
Technical field
The invention belongs to machinery field, especially a kind of vane type servo oscillating hydraulic cylinder and its mechanical equipment is applied.
Background technology
Spiral swing hydranlic pressure jar is divided into spiral oscillating cylinder and vane type oscillating cylinder, wherein spiral oscillating cylinder it is newest and also compared with
The representational prior art is：Double-pole spiral face oscillating oil cylinder and publication No. disclosed in publication number CN105275910A
A kind of Telescopic-swivel hydraulic cylinders of CN102322457A, basic principle are to realize rotation fortune using the screw pair of king bolt lift angle
Dynamic special hydraulic cylinder, rifle bar and the cylinder body of output shaft fix 2 degree of freedom, piston interior surface helical tooth and spiral with bearing
The spiral tooth engagement of stick, the rifle bar surface shape of output shaft are identical with outer surface of piston shape.By to piston both sides fuel feeding,
Make piston up-down, so that rifle bar passive rotation.Although spiral oscillating cylinder possesses stable drive, good airproof performance etc. excellent
Point, but due to the influence of its drive mechanism, high-speed motion can not be realized, it is difficult in the extensive use of SERVO CONTROL field.
Based on drawbacks described above, the research to swing-type cylinder and production at present focuses more on vane type oscillating cylinder, vane type
Oscillating cylinder is a kind of to be integrally fixed at blade motionless on housing there are two types of blade, is called stator vane, the other is being fixed on output
Blade in drive shaft, is called rotor blade, makes rotor swing by input hydraulic pressure oil between the stator and the rotor, so as to export
Torque.Vane type oscillating cylinder by high-precision processing compounding technique, can realize cooperation accurate between stator and rotor from
And realize longer service life, smaller abrasion, smaller friction, it is outstanding the effect of.At present, vane type oscillating cylinder is ground
Study carefully to focus primarily upon with production mode reform and improve leakproofness and assembling repair easy to disassemble etc., such as CN101328858B and
CN106837914A patents disclose related art scheme.But spiral swing hydranlic pressure jar disclosed in the prior art is in some special applications
Under environment, the shortcomings that but some can not overcome：1st, under high frequency use environment, stator and rotor or sealing material and stator rotor
Between high-speed friction, fever is serious, 2, under high frequency environment for a long time using can unstable wear, the service life is made to contract, and wears and can also
Damage causes amount of leakage to increase, 3, existing vane type oscillating cylinder can only bear torque, have and make compared with big load when axially, leaf can be aggravated
Frictional force between piece side and two end cap, work long hours fever and serious wear；When radially having compared with big load, can aggravate
Contact between drive shaft and bearing, so as to increase abrasion, fever is serious, can not work long hours.4th, it is high-precision when requiring
During the dynamic control of degree, the requirement to oscillating cylinder starting friction power is very high, had not only needed extremely low leakage rate, but also has needed frictional force
What is controlled is very low, and high requirement is proposed to processing conditions, realizes difficult, it is difficult to and it successfully processes and assembles, existing structure
The problems such as being also present with abrasion, fever and leakage increase in high-speed cruising.For these problems, it has been disclosed that on swing
The correlation technique of formula hydraulic cylinder does not make progress or breaks through.
Although relevant in the prior art with spiral swing hydranlic pressure jar, there is no in view of the foregoing drawbacks successfully manage mode,
But be disclosed in a kind of low friction dynamic and static back guide sleeve hydraulic cylinders of publication No. CN103867526A proposed in approximate field as
Lower scheme, it by being uniformly arranged three sound pressure oil grooves on the hole wall of guide sleeve, three sound pressure oil grooves and piston rod
Cylindrical makes between piston rod and guide sleeve, because sound pumping cavity keeps pressure film supporting, to save traditional into oil pocket
Sealing ring plays the advantages that abrasion is small, and frequency response is high.The technology is in linear hydraulic cylinder by hydrostatic support Technology application
On a kind of preferable thinking.
But spiral swing hydranlic pressure jar and a kind of described low friction dynamic and static back guide sleeve hydraulic pressure of CN103867526A
Cylinder is since motion mode is different, and there are notable differences for structure.Specifically, oscillating motor is by stator, rotor, end cap etc. zero
Part close fit forms, and a fitting tight device being rotated by hydraulic energy realization rotor, it is in the sky of very little
Between in by input hydraulic pressure power so as to exporting very high torque.And linear hydraulic cylinder is generally by cylinder body, piston, piston rod group
Into principle is to realize that piston rod carries out linear reciprocating motion by hydraulic energy, and the shape of linear oscillating cylinder is compared with structure
It is simple compared with spiral swing hydranlic pressure jar.For spiral swing hydranlic pressure jar to being equipped with strict requirements, part shape is increasingly complex, especially turns
The complicated shape of son makes to form multi-surface contact between rotor and stator and front and rear cover, but need to take into account rotor and stator and
Seal request and external installation association between front and rear cover etc..And this architectural difference is also based on, although existing
Technology proposes the technical inspiration that hydrostatic support technology is applied to linear hydraulic cylinder, but there is no and above carried in spiral swing hydranlic pressure jar
Hydrostatic support technology can be applied by going out Rational structure.
The content of the invention
The present invention discloses a kind of vane type servo oscillating hydraulic cylinder, is realized by oil circuit design in kind of a hydrostatic support formula servo
The defects of hydrostatic support technology is used on oscillating motor, overcomes existing product.
The technical scheme is that：
A kind of vane type servo oscillating hydraulic cylinder and its mechanical equipment is applied, including drive end bearing bracket, rear end cap, stator and turned
Son, stator and rotor are assemblied between drive end bearing bracket and rear end cap, and rotor is placed in stator interior, is set between the blade and stator of rotor
There is N number of oil pocket, drive end bearing bracket and rear end cap offer all holes, and the drive end bearing bracket and/or rear end exterior surface offer N number of high pressure oil
N number of radial bearing flow controller and N number of thrust bearing flow controller, drive end bearing bracket are installed in source fuel feed hole, drive end bearing bracket and/or rear end cap
And/or N number of radial bearing oil outlet is offered in rear end cap axis hole, the connection of the oil outlet end of N number of radial bearing flow controller it is N number of to
Mandrel holds oil outlet, and radial bearing drain pan, radial bearing draining are opened up between the end face and axis hole of drive end bearing bracket and/or rear end cap
Radial bearing oil leak hole is offered in slot, radial bearing oil leak hole is connected with radial bearing drain line, drive end bearing bracket and/or rear end
Thrust bearing is opened up on lid end face and goes out oil groove and thrust bearing drain pan, thrust bearing goes out in oil groove to open up N number of thrust bearing and goes out
Oilhole, N number of thrust bearing oil outlet are communicated with the oil outlet end of N number of thrust bearing flow controller, opened up only in thrust bearing drain pan
Thrust bearing oil leak hole, thrust bearing oil leak hole are connected with thrust bearing drain line, and thrust bearing goes out oil groove and thrust bearing is let out
Region is thrust surface between oil groove.
Further, vane type servo oscillating hydraulic cylinder of the present invention, the oil inlet of N number of radial bearing flow controller
Pass through oil communication, wherein at least one radial bearing flow controller between end and the oil inlet end of N number of thrust bearing flow controller
Oil inlet end and/or the oil inlet end of at least one thrust bearing flow controller connected at least one high pressure fuel source fuel feed hole.
Further, vane type servo oscillating hydraulic cylinder of the present invention, thrust bearing drain line and radial bearing
Drain line connects.
Further, vane type servo oscillating hydraulic cylinder of the present invention, the radial bearing oil outlet periphery open up
Static-pressure oil chamber.
Further, vane type servo oscillating hydraulic cylinder of the present invention, the drive end bearing bracket and/or rear end cap and stator
O-ring is installed between end face.
Present invention simultaneously discloses a kind of mechanical equipment, the mechanical equipment includes vane type servo oscillating hydraulic pressure described above
Cylinder, the mechanical equipment include engineering machinery, robot, testing machine, the vehicles, precision machine tool.
The principle of the present invention and advantageous effect have：
1st, hydraulic oil is flowed into from radial bearing oil outlet to mandrel from high pressure fuel source fuel feed hole by radial bearing throttle valve
When holding oil leak hole, high pressure oil film forms static pressure radial bearing between front and rear cover and the shaft of rotor, and static-pressure oil chamber carries at this time
For better bearing-surface, the compensating action by N number of throttle valve is being formed radially centripetal hydrostatic bearing, rotor is made to hang on the radial
Float in the axis hole of front and rear cover；Hydraulic oil enters thrust bearing from high pressure fuel source fuel feed hole and goes out oil groove inflow thrust bearing draining
During slot, high pressure oil film forms static pressure plane thrust bearing on thrust surface, passes through the thrust bearing throttle valve in front and rear cover
It is common to adjust compensating action, prevent the swivel end contact drive end bearing bracket of rotor and the end face of rear end cap.Such structure makes rotor
High pressure oil film is formed between end cap in axial direction and radial direction both direction, that is, realizes rotor on the whole in closed space Nei Chu
In suspended state.After stator and rotor are separated by static pressure oil film, rotor is completely in oil film suspended state, in this work
Under state, stator rotor is not in contact with wearing completely, theoretical service life endless；Rotor can realize swing under suspended state
Cylinder greatly improves the dynamic control performance of oscillating cylinder close to zero friction launch；Static pressure oil film possesses certain rigidity and bears
The ability of load, even if drive shaft is subject to larger axially or radially load, static pressure oil film still can resist load, anti-fastening
Contact of the son with rotor.
2nd, the present invention in, be not in contact with rubbing between stator and rotor, fever come solely from hydraulic oil, by by it is each to
Mandrel is held between throttle valve through oil communication, and wherein at least one radial bearing throttle valve is kept to connect with inflow pipeline
It is logical, hydraulic oil can be extended in the circulation length of pipeline and time, effective heat dissipation, so as to solve housing heating problem, and this
Kind mode reduces installation difficulty when being connected to oscillating oil cylinder with outer liquid cylinder pressure.
3rd, it is individually for thrust bearing to set oil circuit and thrust bearing throttle valve is installed, the oil film of thrust surface can be effectively improved
The advantages of bearing strength and accuracy, the carrying of oscillating cylinder is bigger, this kind of oil circuit arrangement is more apparent.
4th, the present invention is not generated on the premise of end cap function is increased and appointed by the way that oil circuit is rationally integrated in front and rear cover
The change of what external structure, and since more reliable oil film seal can further reduce fit-up gap, beneficial to peace installation and dismantling
It unloads, therefore the application field of product of the present invention is enable to extend.
5th, hydrostatic support technology is taken to form oil film supporting between each accessory in the sealing space of oscillating cylinder, therefore than passing
The fit-up gap of system oscillating cylinder can reduce, and effectively avoid draining, pollution caused by reducing energy consumption and reducing use in the process.On
Stating advantage makes product Ying Yu of the present invention meanings in accurate or stringent intensity requirement apparatus field very great.
Description of the drawings
Fig. 1 is schematic cross-sectional view of the present invention.
Fig. 2 is assembling structure schematic diagram of the present invention.
Fig. 3 is drive end bearing bracket of the present invention and rear end cap end elevation view.
Fig. 4 is drive end bearing bracket of the present invention and rear end cover structure front view.
Fig. 5 is drive end bearing bracket of the present invention and rear end cover structure schematic diagram.
Specific embodiment
With reference to shown in Fig. 1 to Fig. 5, a kind of vane type servo oscillating hydraulic cylinder of the present invention and its mechanical equipment is applied, bag
Drive end bearing bracket 1, rear end cap 2, stator 3 and rotor 4 are included, stator and rotor are assemblied between drive end bearing bracket and rear end cap, and rotor is placed in fixed
It is sub internal, 4 oil pockets 5 are equipped between the blade and stator of rotor, drive end bearing bracket 1 and rear end cap 2 offer axis hole 6, the front end
Lid 1 and 2 outer surface of rear end cap offer 4 high pressure fuel source fuel feed holes 7, and 4 are equipped in drive end bearing bracket 1 and rear end cap 2 to mandrel
It holds flow controller 8 and 1 thrust bearing flow controller 9,4 radial bearing oil outlets is offered in the axis hole 2 of drive end bearing bracket 1 and rear end cap
The oil outlet end of 10,4 radial bearing flow controllers 8 connects the end face of 4 radial bearing oil outlets 10, drive end bearing bracket 1 and rear end cap 2
Radial bearing drain pan 11 is opened up between axis hole, radial bearing oil leak hole 12 is offered in radial bearing drain pan 11, it is centripetal
Bearing oil leak hole 12 is connected with radial bearing drain line 13, and opening up thrust bearing on 2 end face of drive end bearing bracket 1 and rear end cap goes out oil groove
14 and thrust bearing drain pan 15, thrust bearing goes out in oil groove 14 and opens up 1 thrust bearing oil outlet 16, thrust bearing oil outlet
16 communicate with the oil outlet end of thrust bearing flow controller 9, and thrust bearing oil leak hole 17, thrust shaft are opened up in thrust bearing drain pan 15
It holds oil leak hole 17 to connect with thrust bearing drain line 18, thrust bearing goes out region between oil groove 14 and thrust bearing drain pan 15
For thrust surface 19.
As further optimization, a kind of vane type servo oscillating hydraulic cylinder of the present invention, 4 radial bearing flow controllers 8
Oil inlet end and 1 thrust bearing flow controller 9 oil inlet end between pass through oil communication, wherein thrust bearing flow controller 9
Oil inlet end connected with high pressure fuel source fuel feed hole and (be not shown in figure connecting pipeline).
As further optimization, a kind of vane type servo oscillating hydraulic cylinder of the present invention, thrust bearing drain line 18 with to
Mandrel holds drain line 13 and connects and (be not shown in figure connecting pipeline).
As further optimization, a kind of vane type servo oscillating hydraulic cylinder of the present invention, the radial bearing oil outlet 10 weeks
While open up static-pressure oil chamber 20.
Present invention simultaneously discloses a kind of mechanical equipment, the mechanical equipment includes above-mentioned hydrostatic support formula servo oscillating hydraulic pressure
Cylinder, the mechanical equipment include engineering machinery, robot, testing machine, the vehicles, precision machine tool.
Claims (5)
1. a kind of vane type servo oscillating hydraulic cylinder, including drive end bearing bracket（1）, rear end cap（2）, stator（3）And rotor（4）, stator
And rotor is assemblied between drive end bearing bracket and rear end cap, rotor is placed in stator interior, and N number of oil is equipped between the blade and stator of rotor
Chamber（5）, drive end bearing bracket（1）And rear end cap（2）Offer axis hole（6）, it is characterised in that：The drive end bearing bracket（1）And/or rear end cap
（2）Outer surface offers N number of high pressure fuel source fuel feed hole（7）, drive end bearing bracket（1）And/or rear end cap（2）It is inside equipped with N number of to mandrel
Hold flow controller（8）With N number of thrust bearing flow controller（9）, drive end bearing bracket（1）And/or rear end cap axis hole（6）It inside offers N number of centripetal
Bearing oil outlet（10）, N number of radial bearing flow controller（8）Oil outlet end connect N number of radial bearing oil outlet（10）, drive end bearing bracket
（1）And/or rear end cap（2）End face and axis hole between open up radial bearing drain pan（11）, radial bearing drain pan（11）It is interior
Offer radial bearing oil leak hole（12）, radial bearing oil leak hole（12）With radial bearing drain line（13）Connection, drive end bearing bracket
（1）And/or rear end cap（2）Thrust bearing is opened up on end face and goes out oil groove（14）With thrust bearing drain pan（15）, thrust bearing goes out
Oil groove（14）Inside open up N number of thrust bearing oil outlet（16）, N number of thrust bearing oil outlet（16）With N number of thrust bearing flow controller
（9）Oil outlet end communicate, thrust bearing drain pan（15）Inside open up thrust bearing oil leak hole（17）, thrust bearing oil leak hole（17）
With thrust bearing drain line（18）Connection, thrust bearing go out oil groove（14）With thrust bearing drain pan（15）Between until region
Pushing surface（19）.
2. by vane type servo oscillating hydraulic cylinder described in claim 1, it is characterised in that：N number of radial bearing flow controller
（8）Oil inlet end and N number of thrust bearing flow controller（9）Oil inlet end between by oil communication, wherein at least one to
Mandrel holds flow controller（8）Oil inlet end and/or at least one thrust bearing flow controller（9）Oil inlet end and at least one high pressure oil
Source fuel feed hole connection.
3. by vane type servo oscillating hydraulic cylinder described in claim 1, it is characterised in that：Thrust bearing drain line（18）With
Radial bearing drain line（13）Connection.
4. by vane type servo oscillating hydraulic cylinder described in claim 1, it is characterised in that：The radial bearing oil outlet（10）
Periphery opens up static-pressure oil chamber（20）.
5. a kind of mechanical equipment, it is characterised in that：The mechanical equipment is watched comprising any one vane type described in claim 1-4
Oscillating motor is taken, the mechanical equipment includes engineering machinery, robot, testing machine, the vehicles, precision machine tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711009937.5A CN107524654B (en) | 2017-10-25 | 2017-10-25 | A kind of vane type servo oscillating hydraulic cylinder and apply its mechanical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711009937.5A CN107524654B (en) | 2017-10-25 | 2017-10-25 | A kind of vane type servo oscillating hydraulic cylinder and apply its mechanical equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107524654A CN107524654A (en) | 2017-12-29 |
| CN107524654B true CN107524654B (en) | 2018-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711009937.5A Active CN107524654B (en) | 2017-10-25 | 2017-10-25 | A kind of vane type servo oscillating hydraulic cylinder and apply its mechanical equipment |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108443260A (en) * | 2018-06-07 | 2018-08-24 | 江苏钧微动力科技有限公司 | The special blade oscillating hydraulic cylinder of piece-shape type robot |
| CN113700696B (en) * | 2021-08-25 | 2022-11-18 | 江苏大学 | Friction adjustable cylinder with independent air supply at rear end |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5943221A (en) * | 1982-09-03 | 1984-03-10 | Hitachi Seiko Ltd | Method of manufacturing static-pressure bearing with orifice throttle |
| DD222670A1 (en) * | 1983-12-30 | 1985-05-22 | Leipzig Werkstoffpruefmasch | DEVICE FOR HYDROSTATIC STORAGE OF CYLINDRICAL KOERPERS |
| DE10210750B4 (en) * | 2002-03-12 | 2004-02-12 | Precise Präzisionsspindeln GmbH | High-speed spindle |
| CN2533284Y (en) * | 2002-04-12 | 2003-01-29 | 北京航空航天大学 | Static pressure balanced rotary actuator |
| CN101229590A (en) * | 2008-02-25 | 2008-07-30 | 哈尔滨工业大学 | Ultra-sophisticated aerostatic motorized spindle system |
| CN102840237B (en) * | 2012-07-27 | 2015-04-15 | 华中科技大学 | Liquid hydrostatic bearing capable of realizing oil distribution from end surface |
| CN103543011B (en) * | 2013-10-11 | 2016-04-13 | 华中科技大学 | A kind of hydrostatic support testing table |
| CN104653620B (en) * | 2015-01-07 | 2017-02-22 | 东南大学 | Simple assembly and disassembly device of hydrostatic bearing pinhole flow controller |
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Inventor after: Liu Hu Inventor after: Cui Yan Inventor after: Zhao Yangang Inventor after: Liu Guangwei Inventor after: Wang Yujie Inventor after: Liu Chenyu Inventor before: Liu Hu Inventor before: Zhao Yangang Inventor before: Liu Guangwei Inventor before: Wang Yujie Inventor before: Liu Chenyu |
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