CN110030226A - A kind of anti-bias load hydraulic cylinder based on heterogeneous frictional interface elastohydrodynamic lubrication performance - Google Patents
A kind of anti-bias load hydraulic cylinder based on heterogeneous frictional interface elastohydrodynamic lubrication performance Download PDFInfo
- Publication number
- CN110030226A CN110030226A CN201910317748.7A CN201910317748A CN110030226A CN 110030226 A CN110030226 A CN 110030226A CN 201910317748 A CN201910317748 A CN 201910317748A CN 110030226 A CN110030226 A CN 110030226A
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- Prior art keywords
- hydraulic cylinder
- wall
- heterogeneous
- bias load
- piston
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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
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
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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
- F15B15/1428—Cylinders
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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
- F15B15/1447—Pistons; Piston to piston rod assemblies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/02—Bearing surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J10/00—Engine or like cylinders; Features of hollow, e.g. cylindrical, bodies in general
- F16J10/02—Cylinders designed to receive moving pistons or plungers
- F16J10/04—Running faces; Liners
Abstract
The invention belongs to anti-bias load low friction hydraulic cylinder technical fields, and in particular to a kind of anti-bias load hydraulic cylinder based on heterogeneous frictional interface elastohydrodynamic lubrication performance.A kind of anti-bias load hydraulic cylinder based on heterogeneous frictional interface elastohydrodynamic lubrication performance, including piston and cylinder barrel uniformly bury in the subsurface stratum of the piston outer wall or the subsurface stratum of inner wall of cylinder and are furnished with ball-type Particulate Inclusion.The present invention has the characteristics that frictional force is small, abrasion loss is small, leakage rate is low, anti-bias load.
Description
Technical field
The invention belongs to anti-bias load low friction hydraulic cylinder technical fields, and in particular to one kind is based on heterogeneous frictional interface bullet stream
The anti-bias load hydraulic cylinder of greasy property.
Background technique
Hydraulic cylinder is one of main executive component of Hydraulic Power Transmission System, it is that the pressure energy of oil liquid is converted to machinery
Can, it realizes in linear reciprocating motion or the energy conversion device and hydraulic system of swing and applies most executive components.It is existing
Hydraulic cylinder and piston between it is in sealing contact be mostly sealing ring it is in sealing contact, the sealing of this form increases piston rod movement
Resistance, the abrasion between Barrel of Hydraulic Cylinders inner wall and piston is increased, so that the dynamic characteristic of hydraulic cylinder is difficult to improve.
Existing scholar develops a kind of servo hydraulic cylinder (ZL200910272743.3) of varying clearance seal at present.Piston with
Between cylinder barrel, variable elastic packing gap is constructed by lip-like composite deformation structure；Using pressure autocompensation mechanism, formed
The clearance seal flow field that can adapt to pressure change automatically, makes hydraulic cylinder interior leakage leakage quantity be reduced to 95mL/ under 31.5MPa pressure
min。
The appearance of clearance seal servo hydraulic cylinder, although largely solving the problem that frequency response is low, internal leakage is big,
But thus bring wear problem increasingly highlights.Due to, without sealing ring, supporting the power of piston complete between friction pair
Oil liquid in gap entirely, and this support force is very limited.In addition, heavily loaded high-speed servo hydraulic cylinder is in real work
In, due to self weight, the factors such as unstable, piston rod amount of deflection of operating condition, it can cause the bias of piston rod and piston, make piston
Biggish contact pressure is generated between the friction subcomponent such as inner wall of cylinder, piston rod and support ring, with the increasing for using the time
Add, gap enlargement between kinematic pair, this will cause the bearing capacity of oil liquid in gap to reduce, and oil film is destroyed, to make piston
Dry contact occurs between the friction subcomponent such as inner wall of cylinder, piston rod and support ring, eventually lead to be seriously worn with it is huge
Economic loss.
In conclusion there are the following problems for existing hydraulic cylinder: frictional force is big, abrasion loss is big, leakage rate is big, unbalance loading contact
The disadvantages of power is big.
In addition " the Elastohydrodynamic lubrication that teachers should be waited to deliver by Wuhan University Of Technology Chen Ke
In point contact on the surfaces of particlerein-forced composite " (particle enhancing symbol
The makes point contact elastohydrodynamic lubrication of condensation material) it mentions in a text about the heterogeneous frictional interface point contact bullet stream based on enhancing particle
The research of lubrication.Studies have shown that the frictional interface of the particle containing enhancing can form micro-bulge at particle under case of heavy load, when
Particle can increase the thickness of oil film under the conditions of specific branch, enhance the bearing capacity of oil film, and can reduce contact surface
Frictional force.
Summary of the invention
The present invention is directed to overcome the deficiencies in the prior art, provide that a kind of frictional force is small, abrasion loss is small, leakage rate
Low, anti-bias load the hydraulic cylinder based on heterogeneous frictional interface elastohydrodynamic lubrication performance.
To achieve the above object, the technical solution adopted by the present invention is that: one kind be based on heterogeneous frictional interface elastohydrodynamic lubrication
Can anti-bias load hydraulic cylinder, including piston and cylinder barrel, in the subsurface stratum of the piston outer wall or the subsurface stratum of inner wall of cylinder uniformly
It buries and is furnished with ball-type Particulate Inclusion.
Preferably, the ball-type Particulate Inclusion is h=in the cloth depth of burying of the piston outer wall or inner wall of cylinder subsurface stratum
0.02mm~0.08mm.
Preferably, the ball-type Particulate Inclusion diameter is d=0.02mm~0.08mm, elastic modulus E2=450GPa~
650GPa。
Preferably, the ball-type Particulate Inclusion is distributed spacing l along the piston outer wall or inner wall of cylinder axis direction1=
0.2mm~1mm is distributed spacing l along the piston outer wall or inner wall of cylinder circumferencial direction2=0.2mm~1mm.
Preferably, the matrix of the piston or cylinder barrel as ball-type Particulate Inclusion, elastic modulus E2=100GPa~
200GPa。
Preferably, the hydraulic cylinder is single-piston rod heavy-load hydraulic cylinder.
Preferably, gap delta=10 μm~15 μm of the piston outer wall and inner wall of cylinder.
The present invention buries cloth ball-type Particulate Inclusion in the piston outer wall of hydraulic cylinder or the subsurface stratum of inner wall of cylinder, can be in piston weight
It carries under operating condition, reduces the internal leakage of hydraulic cylinder.
The present invention buries cloth ball-type Particulate Inclusion in the piston outer wall or inner wall of hydraulic cylinder, can occur in piston and inner wall of cylinder
When high strong contact, enhance the bearing capacity of oil film, improves hydraulic cylinder offset load resistance.
Therefore, the present invention has the characteristics that frictional force is small, abrasion loss is small, leakage rate is low, anti-bias load.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the invention；
Fig. 2 is the partial enlarged view in Fig. 1 at I, II two；
Another structural schematic diagram Fig. 3 of the invention；
Fig. 4 is the partial enlarged view in Fig. 3 at III, IV two；
Fig. 5 is heterogeneous frictional interface pattern schematic diagram under heavy duty；
In figure: 1 piston, 2 cylinder barrels, 3 ball-type Particulate Inclusions.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description, not to the limit of its protection scope
System.
Embodiment 1
A kind of anti-bias load hydraulic cylinder based on heterogeneous frictional interface elastohydrodynamic lubrication performance, 1 outer wall of piston of the hydraulic cylinder
With gap delta=10 μm~15 μm of 2 inner wall of cylinder barrel of hydraulic cylinder, frictional interface at this time is in ehl status.Such as Fig. 1 institute
Show, buries cloth ball-type Particulate Inclusion 3 in the subsurface stratum of 1 outer wall of piston, bury cloth depth h=0.02mm~0.08mm.Ball-type is mingled with
Grain 3 is distributed spacing l in the axial direction1=0.2mm~1mm is along the circumferential direction distributed spacing l2=0.2mm~1mm.The ball-type
The elastic modulus E of Particulate Inclusion 31=450GPa~650GPa, matrix of the piston 1 as ball-type Particulate Inclusion 3, elasticity modulus
E2=100~200 GPa.Diameter d=0.02mm~0.08mm of the ball-type Particulate Inclusion 3.
Embodiment 2
A kind of anti-bias load hydraulic cylinder based on heterogeneous frictional interface elastohydrodynamic lubrication performance, 1 outer wall of piston of the hydraulic cylinder
With gap delta=10 μm~15 μm of 2 inner wall of cylinder barrel of hydraulic cylinder, frictional interface at this time is in ehl status.Such as Fig. 3 institute
Show, buries cloth ball-type Particulate Inclusion 3 in 2 inner wall subsurface stratum of Barrel of Hydraulic Cylinders, bury cloth depth h=0.02mm~0.08mm.Ball-type folder
Miscellaneous particle 3 is distributed spacing l in the axial direction1=0.2mm~1mm is along the circumferential direction distributed spacing l2=0.2mm~1mm.It is described
The elastic modulus E of ball-type Particulate Inclusion 31=450GPa~650GPa, matrix of the cylinder barrel 2 as ball-type Particulate Inclusion 3, elasticity
Modulus E2=100~200GPa.Diameter d=0.02mm~0.08mm of the ball-type Particulate Inclusion 3.
The application buries cloth ball-type Particulate Inclusion 3 in 1 outer wall of piston or 2 inner wall of cylinder barrel of hydraulic cylinder, sends out in heavy-load hydraulic cylinder
When raw unbalance loading, contact surface can be deformed, and form the microstructure of class texture, the microstructure of the class texture is i.e. in piston
1 or 2 inner wall of cylinder barrel form micro-bulge as shown in Figure 5, the formation of the micro-bulge can lock dynamic pressure oil film, improve lubrication
State.Since ball-type Particulate Inclusion 3 is distributed in the subsurface stratum of 2 inner wall of 1 outer wall of piston or cylinder barrel, even if skin-material is worn
Its structure will not be destroyed at once, can still play a role and generate reliable hydrodynamic lubrication oil film on surface, reduce hydraulic
Abrasion between 1 outer wall of 2 inner wall of cylinder cylinder barrel and piston.Since 1 outer wall of piston or 2 inner wall of cylinder barrel in hydraulic cylinder bury cloth ball-type folder
Miscellaneous particle 3 can reduce the internal leakage of hydraulic cylinder under 1 severe duty of piston；It can occur in 1 outer wall of piston and 2 inner wall of cylinder barrel high
When strong contact, enhance the bearing capacity of oil film, improves hydraulic cylinder offset load resistance.
Therefore, the present invention has the characteristics that frictional force is small, abrasion loss is small, leakage rate is low, anti-bias load.
Claims (7)
1. a kind of anti-bias load hydraulic cylinder based on heterogeneous frictional interface elastohydrodynamic lubrication performance, including piston and cylinder barrel, feature exist
In: it is uniformly buried in the subsurface stratum of the piston outer wall or the subsurface stratum of inner wall of cylinder and is furnished with ball-type Particulate Inclusion.
2. a kind of anti-bias load hydraulic cylinder based on heterogeneous frictional interface elastohydrodynamic lubrication performance according to claim 1, special
Sign is: the ball-type Particulate Inclusion the piston outer wall or inner wall of cylinder subsurface stratum bury cloth depth be h=0.02mm~
0.08mm。
3. a kind of anti-bias load hydraulic cylinder based on heterogeneous frictional interface elastohydrodynamic lubrication performance according to claim 2, special
Sign is: the ball-type Particulate Inclusion diameter is d=0.02mm~0.08mm, elastic modulus E2=450GPa~650GPa.
4. a kind of anti-bias load hydraulic cylinder based on heterogeneous frictional interface elastohydrodynamic lubrication performance according to claim 1,2 or 3,
It is characterized by: the ball-type Particulate Inclusion is distributed spacing l along the piston outer wall or inner wall of cylinder axis direction1=0.2mm
~1mm is distributed spacing l along the piston outer wall or inner wall of cylinder circumferencial direction2=0.2mm~1mm.
5. a kind of anti-bias load hydraulic cylinder based on heterogeneous frictional interface elastohydrodynamic lubrication performance according to claim 4, special
Sign is: the matrix of the piston or cylinder barrel as ball-type Particulate Inclusion, elastic modulus E2=100GPa~200GPa.
6. a kind of anti-bias load hydraulic cylinder based on heterogeneous frictional interface elastohydrodynamic lubrication performance according to claim 5, special
Sign is: the hydraulic cylinder is single-piston rod heavy-load hydraulic cylinder.
7. a kind of anti-bias load hydraulic cylinder based on heterogeneous frictional interface elastohydrodynamic lubrication performance according to claim 6, special
Sign is: gap delta=10 μm~15 μm of the piston outer wall and inner wall of cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910317748.7A CN110030226A (en) | 2019-04-19 | 2019-04-19 | A kind of anti-bias load hydraulic cylinder based on heterogeneous frictional interface elastohydrodynamic lubrication performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910317748.7A CN110030226A (en) | 2019-04-19 | 2019-04-19 | A kind of anti-bias load hydraulic cylinder based on heterogeneous frictional interface elastohydrodynamic lubrication performance |
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| Publication Number | Publication Date |
|---|---|
| CN110030226A true CN110030226A (en) | 2019-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910317748.7A Pending CN110030226A (en) | 2019-04-19 | 2019-04-19 | A kind of anti-bias load hydraulic cylinder based on heterogeneous frictional interface elastohydrodynamic lubrication performance |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101092981A (en) * | 2007-07-25 | 2007-12-26 | 天津市天锻压力机有限公司 | Anti partial loading oil cylinder in use for large size hydraulic machine |
| CN101725588A (en) * | 2009-11-10 | 2010-06-09 | 武汉科技大学 | Hydraulic cylinder with clearance sealed type deformed piston |
| CN102518618A (en) * | 2011-12-27 | 2012-06-27 | 山东天一液压科技股份有限公司 | Hydraulic cylinder |
| CN103867526A (en) * | 2014-04-11 | 2014-06-18 | 武汉科技大学 | Low-friction hybrid support guide sleeve hydraulic cylinder |
| CN109253127A (en) * | 2018-03-22 | 2019-01-22 | 太原科技大学 | A kind of ball head structure anti-bias load heavy duty servo hydraulic cylinder |
-
2019
- 2019-04-19 CN CN201910317748.7A patent/CN110030226A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101092981A (en) * | 2007-07-25 | 2007-12-26 | 天津市天锻压力机有限公司 | Anti partial loading oil cylinder in use for large size hydraulic machine |
| CN101725588A (en) * | 2009-11-10 | 2010-06-09 | 武汉科技大学 | Hydraulic cylinder with clearance sealed type deformed piston |
| CN102518618A (en) * | 2011-12-27 | 2012-06-27 | 山东天一液压科技股份有限公司 | Hydraulic cylinder |
| CN103867526A (en) * | 2014-04-11 | 2014-06-18 | 武汉科技大学 | Low-friction hybrid support guide sleeve hydraulic cylinder |
| CN109253127A (en) * | 2018-03-22 | 2019-01-22 | 太原科技大学 | A kind of ball head structure anti-bias load heavy duty servo hydraulic cylinder |
Non-Patent Citations (1)
| Title |
|---|
| KEYING CHEN，LIANGCAI ZENG，ZHENPENG WU，FEILONG ZHENG: "Elastohydrodynamic lubrication in point contact on the surfaces of particle-reinforced composite", 《AIP ADVANCES》 * |
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Application publication date: 20190719 |