CN207377893U - A kind of hydrostatic support formula servo oscillating hydraulic cylinder and apply its mechanical equipment - Google Patents
A kind of hydrostatic support formula servo oscillating hydraulic cylinder and apply its mechanical equipment Download PDFInfo
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- CN207377893U CN207377893U CN201721393798.6U CN201721393798U CN207377893U CN 207377893 U CN207377893 U CN 207377893U CN 201721393798 U CN201721393798 U CN 201721393798U CN 207377893 U CN207377893 U CN 207377893U
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Abstract
The utility model belongs to mechanical manufacturing field, especially a kind of hydrostatic support formula 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 utility model 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 more particularly to a kind of hydrostatic support formula servo oscillating hydraulic cylinder and apply its machinery
Equipment.
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 hydrostatic support formula servo oscillating hydraulic cylinder and applies its mechanical equipment, is designed by oil circuit
The defects of realizing and hydrostatic support technology used on kind of hydrostatic support formula servo oscillating hydraulic cylinder, overcoming existing product.
The technical scheme is that：
A kind of hydrostatic support formula servo oscillating hydraulic cylinder, including drive end bearing bracket, rear end cap, stator and rotor, stator and rotor
It is assemblied between drive end bearing bracket and rear end cap, rotor is placed in stator interior, and N number of oil pocket is equipped between the blade and stator of rotor, preceding
Axis hole is offered in the middle part of end cap and rear end cap, the drive end bearing bracket and/or rear end exterior surface offer N number of high pressure fuel source oil inlet
Hole is provided with N number of radial bearing throttle valve in the drive end bearing bracket and/or rear end cap, and the N number of radial bearing of axis hole Nei Kai societies goes out
Oilhole, N number of radial bearing oil outlet are connected with the oil outlet end of N number of radial bearing throttle valve, the drive end bearing bracket and/or
Thrust bearing drain pan is opened up on rear end cap end face, thrust bearing oil leak hole is opened up in thrust bearing drain pan, thrust bearing is let out
Oilhole is connected with drain line, and region is thrust surface between thrust bearing drain pan and axis hole.
Further, hydrostatic support formula servo oscillating hydraulic cylinder of the present invention, N number of radial bearing throttle valve into
Pass through oil communication, the oil inlet end of wherein at least one radial bearing throttle valve and at least one high pressure fuel source oil inlet between oily end
Hole connects.
Further, hydrostatic support formula servo oscillating hydraulic cylinder of the present invention, at least one radial bearing are fuel-displaced
Hole periphery opens up static-pressure oil chamber.
Further, on the outside of hydrostatic support formula servo oscillating hydraulic cylinder of the present invention, the drive end bearing bracket and/or rear end cap
Sealing framework at axis hole is installed, sealing ring is provided in sealing framework.
Further, hydrostatic support formula servo oscillating hydraulic cylinder of the present invention, the drive end bearing bracket and/or rear end cap are with determining
O-ring is installed between sub- end face.
Present invention simultaneously discloses a kind of mechanical equipment, the mechanical equipment includes any one hydrostatic support formula described above
Servo oscillating hydraulic cylinder, it is any one that the mechanical equipment includes engineering machinery, robot, testing machine, the vehicles, precision machine tool
Kind.
The principle of the present invention and advantageous effect have：
1st, by stator and rotor assembling between two end caps, the shaft of rotor is assigned into axis hole, the end of rotor swivel
The end face of end cap and rear end cap is bonded in front, and hydraulic oil is from high pressure fuel source fuel feed hole by radial bearing throttle valve from radial bearing
When oil outlet flows into radial bearing oil leak hole, it is centripetal that high pressure oil film forms radial direction static pressure between front and rear cover and the shaft of rotor
Bearing, static-pressure oil chamber form static pressure oil pad and provide better bearing-surface at this time；Simultaneously on thrust surface rotor blade with before
Axial static pressure thrust bearing is formed between end cap and the end face of rear end cap.It is throttled by N number of radial bearing in front and rear cover
The adjusting compensating action of valve, makes rotor be suspended on the radial in the axis hole of front and rear cover；Pass through the N number of of drive end bearing bracket and rear end cap
The compensating action to be formed that turned in the axial direction to rotor of throttle valve is also prevented from rotor swivel two end caps of end contact simultaneously
End face.Such structure makes rotor form high pressure oil film between end cap in axial direction and radial direction both direction, that is, realizes rotor
Suspended state is in closed space on the whole.After stator and rotor are separated by static pressure oil film, rotor is completely in
Oil film suspended state, in this operating condition, stator rotor are not in contact with wearing completely, theoretical service life endless；Rotor exists
Under suspended state, it can realize that oscillating cylinder close to zero friction launch, greatly improves the dynamic control performance of oscillating cylinder；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 load can be resisted, prevents contact of the stator 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.
3rd, another advantage of said structure is that pipeline is integrated in cover internal, and this mode eliminates external complex
Pipeline is installed, most preferably when only can enter high pressure oil, but since the connection of pipeline can all the way from high pressure fuel source fuel feed hole
Fuel feeding is carried out to four throttle valves, inside and outside space has been saved, has been reduced when being connected to oscillating oil cylinder with outer liquid cylinder pressure
Installation difficulty, structure is more compact, therefore application space is expanded.
4th, hydrostatic support technology is taken to form oil film supporting in sealing space, therefore fit-up gap can compare existing product
Smaller improves precision and prevents from revealing, reduces the pollution and maintenance using process, the meaning weight in the use of precision instrument and equipment
Greatly.
Description of the drawings
Fig. 1 is assembling schematic diagram of the present invention.
Fig. 2 is the end view of drive end bearing bracket of the present invention and rear end cap.
Fig. 3 is drive end bearing bracket of the present invention and rear end cap internal structure schematic diagram.
Fig. 4 is sectional arrangement drawing of the present invention.
Specific embodiment
With reference to shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, a kind of hydrostatic support formula servo oscillating hydraulic cylinder of the present invention and application its
Mechanical equipment, including drive end bearing bracket 1, rear end cap 4, stator 2 and rotor 3, stator and rotor be assemblied in drive end bearing bracket 1 and rear end cap 4 it
Between, rotor is placed in stator interior, and N number of oil pocket 5 is equipped between the blade and stator of rotor, and the middle part of drive end bearing bracket 1 and rear end cap 4 is opened
Equipped with axis hole 6, the drive end bearing bracket 1 and 4 outer surface of rear end cap offer 1 high pressure fuel source fuel feed hole 7, the drive end bearing bracket and rear end
It is provided with 4 radial bearing throttle valves 8 in lid, the 6 Nei Kai societies of axis hole, 4 radial bearing oil outlets 9, described 4 to mandrel
The oil outlet end that oil outlet 9 is held with 4 radial bearing throttle valves 8 connects, and is opened up only on the drive end bearing bracket and rear end cap end face
Thrust bearing drain pan 10 opens up thrust bearing oil leak hole 11, thrust bearing oil leak hole 11 and draining in thrust bearing drain pan 10
Pipeline 12 connects, and region is thrust surface 13 between thrust bearing drain pan 10 and axis hole.
As further optimization, a kind of hydrostatic support formula servo oscillating hydraulic cylinder of the present invention, 4 radial bearings throttling
Connected between the oil inlet end of valve 8 by oil circuit 18, the oil inlet end of one of radial bearing throttle valve 8 and a high pressure fuel source into
Oilhole 7 connects.
As further optimization, a kind of hydrostatic support formula servo oscillating hydraulic cylinder of the present invention, each radial bearing goes out
9 periphery of oilhole opens up static-pressure oil chamber 14.
Optimize as further, a kind of hydrostatic support formula servo oscillating hydraulic cylinder of the present invention, axis hole on the outside of the drive end bearing bracket
Place is equipped with sealing framework 15, and sealing ring 16 is provided in sealing framework.
As further optimization, a kind of hydrostatic support formula servo oscillating hydraulic cylinder of the present invention, the drive end bearing bracket and rear end cap
O-ring 17 is installed between stator faces.
Present invention simultaneously discloses a kind of mechanical equipment, the mechanical equipment includes hydrostatic support formula servo oscillating described above
Hydraulic cylinder, the mechanical equipment include engineering machinery, robot, testing machine, the vehicles, precision machine tool any one.
Claims (6)
1. a kind of hydrostatic support formula servo oscillating hydraulic cylinder, including drive end bearing bracket（1）, rear end cap（4）, stator（2）And rotor（3）,
Stator and rotor are assemblied in drive end bearing bracket（1）And rear end cap（4）Between, rotor is placed in stator interior, the blade and stator of rotor it
Between be equipped with N number of oil pocket（5）, drive end bearing bracket（1）And rear end cap（4）Middle part offer axis hole（6）, it is characterised in that：The front end
Lid（1）And/or rear end cap（4）Outer surface offers N number of high pressure fuel source fuel feed hole（7）, set in the drive end bearing bracket and/or rear end cap
It is equipped with N number of radial bearing throttle valve（8）, the axis hole（6）The N number of radial bearing oil outlet of Nei Kai societies（9）, it is described N number of to mandrel
Hold oil outlet（9）With N number of radial bearing throttle valve（8）Oil outlet end connection, on the drive end bearing bracket and/or rear end cap end face
Open up thrust bearing drain pan（10）, thrust bearing drain pan（10）Inside open up thrust bearing oil leak hole（11）, thrust bearing lets out
Oilhole（11）With drain line（12）Connection, thrust bearing drain pan（10）Region is thrust surface between axis hole（13）.
2. by hydrostatic support formula servo oscillating hydraulic cylinder described in claim 1, it is characterised in that：N number of radial bearing section
Flow valve（8）Oil inlet end between pass through oil circuit（18）Connection, wherein at least one radial bearing throttle valve（8）Oil inlet end with extremely
A few high pressure fuel source fuel feed hole（7）Connection.
3. by hydrostatic support formula servo oscillating hydraulic cylinder described in claim 1, it is characterised in that：It is described at least one to mandrel
Hold oil outlet（9）Periphery opens up static-pressure oil chamber（14）.
4. by hydrostatic support formula servo oscillating hydraulic cylinder described in claim 1, it is characterised in that：The drive end bearing bracket and/or after
Sealing framework (15) on the outside of end cap at axis hole is installed, sealing ring (16) is provided in sealing framework.
5. by hydrostatic support formula servo oscillating hydraulic cylinder described in claim 1, it is characterised in that：The drive end bearing bracket and/or after
O-ring (17) is installed between end cap and stator faces.
6. a kind of mechanical equipment, it is characterised in that：The mechanical equipment includes any one hydrostatic support described in claim 1-5
Formula servo oscillating hydraulic cylinder, it is arbitrary that the mechanical equipment includes engineering machinery, robot, testing machine, the vehicles, precision machine tool
It is a kind of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721393798.6U CN207377893U (en) | 2017-10-25 | 2017-10-25 | A kind of hydrostatic support formula servo oscillating hydraulic cylinder and apply its mechanical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721393798.6U CN207377893U (en) | 2017-10-25 | 2017-10-25 | A kind of hydrostatic support formula servo oscillating hydraulic cylinder and apply its mechanical equipment |
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| Publication Number | Publication Date |
|---|---|
| CN207377893U true CN207377893U (en) | 2018-05-18 |
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ID=62336191
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721393798.6U Active CN207377893U (en) | 2017-10-25 | 2017-10-25 | A kind of hydrostatic support formula servo oscillating hydraulic cylinder and apply its mechanical equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575429A (en) * | 2017-10-25 | 2018-01-12 | 烟台比吉流体控制技术有限公司 | A kind of hydrostatic support formula servo oscillating hydraulic cylinder and apply its plant equipment |
| CN110273887A (en) * | 2019-07-03 | 2019-09-24 | 江苏恒立液压股份有限公司 | Servo actuator |
| CN112357725A (en) * | 2020-11-26 | 2021-02-12 | 中国矿业大学 | Multi-rope tension balancing adjusting device and method |
-
2017
- 2017-10-25 CN CN201721393798.6U patent/CN207377893U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575429A (en) * | 2017-10-25 | 2018-01-12 | 烟台比吉流体控制技术有限公司 | A kind of hydrostatic support formula servo oscillating hydraulic cylinder and apply its plant equipment |
| CN110273887A (en) * | 2019-07-03 | 2019-09-24 | 江苏恒立液压股份有限公司 | Servo actuator |
| CN110273887B (en) * | 2019-07-03 | 2021-06-01 | 江苏恒立液压股份有限公司 | Servo actuator |
| CN112357725A (en) * | 2020-11-26 | 2021-02-12 | 中国矿业大学 | Multi-rope tension balancing adjusting device and method |
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