CN106930998A - A kind of enhanced lightweight hydraulic cylinder of carbon fibre composite - Google Patents
A kind of enhanced lightweight hydraulic cylinder of carbon fibre composite Download PDFInfo
- Publication number
- CN106930998A CN106930998A CN201710353675.8A CN201710353675A CN106930998A CN 106930998 A CN106930998 A CN 106930998A CN 201710353675 A CN201710353675 A CN 201710353675A CN 106930998 A CN106930998 A CN 106930998A
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- Prior art keywords
- cylinder
- carbon fibre
- fibre composite
- piston
- hydraulic cylinder
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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
- F15B15/1447—Pistons; Piston to piston rod assemblies
-
- 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
- F15B15/1438—Cylinder to end cap assemblies
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses a kind of enhanced lightweight hydraulic cylinder of carbon fibre composite, including the hydraulic cylinder being connected to form with cylinder bottom and cylinder cap respectively by cylinder barrel two ends, piston and the piston rod being connected with piston are provided with cylinder barrel, stretched out outside hydraulic cylinder in the hole that described piston rod one end is set from cylinder cap, piston rod is equipped with dynamic sealing with the hole inwall and piston of cylinder cap with inner wall of cylinder, the first hydraulic fluid port and the second hydraulic fluid port being connected with hydraulic oil system are respectively equipped with cylinder bottom and cylinder cap, drive the piston both sides in cylinder barrel to slide by hydraulic oil；The cylinder barrel is made up of metal inner lining in outer surface covering carbon fibre composite enhancement layer, the carbon fibre composite enhancement layer be by intensity more than 3500MPa carbon fibre material for reinforcing material, thermosetting resin be matrix, be made of wet winding technology technique.The apparatus structure is simple, and its is lightweight while with intensity, rigidity, anti-fatigue performance, can be used for the fields such as engineering machinery, space flight and aviation, auto industry.
Description
Technical field
The present invention relates to a kind of hydraulic cylinder, and in particular to a kind of enhanced lightweight hydraulic cylinder of carbon fibre composite.
Background technology
At present, hydraulic technique forward direction high pressure, high speed, high reliability, highly integrated direction fast development.The section of engineering machinery
Energyization, lightweight develop the Hydraulic Elements for causing that its needs is gentlier more reliable；In aircraft and aerospace field, hydraulic system and
The characteristics of element must possess lightweight, high intensity；Light-weight design in auto industry turns into the effective of automotive energy-saving emission-reducing
Approach, and the light-weight design of Hydraulic Elements is its important part.Hydraulic cylinder performs unit as important in hydraulic system
Part, its lightweight is imperative.Tradition using metal material manufacture hydraulic cylinder in order to meet intensity, rigidity, fatigue resistance and
The requirement such as security, it is necessary to improve safety coefficient, so allows for that hydraulic cylinder weight is big, over-designed expends material.Realize liquid
Cylinder pressure lightweight is that product structure optimization is carried out on the basis of fully conditions researching is carried out first, next to that high-strength low-density
The development and application of new material.
In numerous lightweighting materials, carbon fibre composite has excellent comprehensive mechanical property：Specific strength（Intensity
The ratio between with density）, specific modulus（The ratio between modulus and density）With than energy-absorbing（The energy that effectively unit mass absorbs in destruction length）
Height, typically in more than 3500MPa, tensile modulus of elasticity is 23000-43000MPa to tensile strength, is set rigidity or equal strength is waited
Meter principle under, carbon fiber composite structure than low-carbon (LC) steel construction loss of weight more than 50%, than magnesium/aluminium alloy structure loss of weight up to 30%；
Meanwhile, carbon fibre composite has good anti-fatigue performance, corrosion resistance, and part service life is high, therefore, by carbon fiber
Materials application can not only reach lightweight purpose in hydraulic cylinder, can also obtain better performance.
There is a small amount of company to manufacture hydraulic cylinder using carbon fibre composite at present.Such as, sent in Hanover's exhibition in 2015
The carbon fiber hydraulic cylinder of gram company displaying, domestic Han Chen hydraulic pressure company it is also proposed similar carbon fiber hydraulic cylinder.In composite wood
Material is connected them with metal material mostly using schemes such as cementing, screw, pins.There is degumming hidden danger and not enough may be used in cementing scheme
Lean on, and inconvenient detachable maintaining；Screw, pin connection scheme easily cause the destruction of composite layer.Lightweight can make liquid
Cylinder pressure has a lower energy consumption, saves power, improves economy, hydraulic product is met the requirement of energy-conserving and environment-protective, engineering machinery,
There is huge application potential in the fields such as Aero-Space, auto industry.
The content of the invention
The technical problems to be solved by the invention are：A kind of carbon fibre composite enhancing hydraulic cylinder is proposed, for meeting
Lightweight needs and higher and higher intensity, rigidity, fatigue resistance, security of hydraulic cylinder etc. are required.This carbon fiber is combined
For the relatively conventional hydraulic cylinder of Material reinforcement hydraulic cylinder, simple structure, it is easy to detachable maintaining possesses intensity higher, rigidity, resists
Fatigue behaviour, while its weight can mitigate 30% or so, the hydraulic cylinder can be used for engineering as the executive component of hydraulic system
The fields such as machinery, space flight and aviation, auto industry.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：
A kind of enhanced lightweight hydraulic cylinder of carbon fibre composite, including be connected with cylinder bottom and cylinder cap respectively group by cylinder barrel two ends
Into hydraulic cylinder, it is characterised in that：Be provided with piston and the piston rod being connected with piston in the cylinder barrel, described piston rod one end from
Stretched out outside hydraulic cylinder in the hole set on cylinder cap, piston rod is equipped with dynamic close with the hole inwall and piston of cylinder cap with inner wall of cylinder
Envelope, is respectively equipped with the first hydraulic fluid port and the second hydraulic fluid port on cylinder bottom and cylinder cap, first hydraulic fluid port and the second hydraulic fluid port respectively with hydraulic oil
System is connected, and drives the piston both sides in cylinder barrel to slide by hydraulic oil；The cylinder barrel covers carbon by metal inner lining in outer surface
Fibrous composite enhancement layer constitute, the carbon fibre composite enhancement layer be by intensity more than 3500MPa carbon fiber
Material is reinforcing material, thermosetting resin is matrix, is made of wet winding technology technique.
Used as improvement, the wet therapy forming process of the carbon fibre composite enhancement layer refers to：Carbon fibre precursor, carbon is fine
Dimension unidirectional cloth and carbon fiber arrowband cloth first carry out impregnation using thermosetting resin, are then wound into as core under tension force
Metal inner lining on, the last cured demoulding obtains cylinder barrel.
Used as improvement, in the wet therapy forming process, the canoe of carbon fibre material is after impregnation：On metal inner lining
The bottom using carbon fiber unidirectional cloth wind, intermediate layer using carbon fibre precursor wind, outermost layer use carbon fiber arrowband cloth
Winding；Wound without pretightning force using internal layer in the carbon fiber unidirectional cloth winding layer of the bottom, winding angle is 0 °；To intermediate layer
Carbon fibre precursor winding layer applies pretightning force, and winding angle is 45 ° to 90 °；Outermost carbon fiber arrowband cloth winding layer is used
Without pretightning force winding, winding angle is 90 °；It is heating and curing by 130 to 140 DEG C after the completion of winding, carbon fiber is combined after the demoulding
Material reinforcement layer and metal inner lining are tightly bonded together.
Used as improvement, the cylinder bottom is provided with buffering confined space, and piston is provided with and buffering confined space near cylinder bottom side
The cushion collar of cooperation.
Used as improvement, the metal inner lining is the thin cylinder that a kind of two ends inside thickeies, thin cylinder and cylinder cap and cylinder
Bottom is connected through a screw thread, and the screw thread is the fine thread of 6 class precisions；The metal inner lining interlude inwall is carried out at surface
Reason, makes its surface roughness roughness Ra value between 0.1 to 0.4.
Used as improvement, the metal inner lining interlude inner wall surface processing mode is：First in metal inner lining interlude inwall
Chrome-faced, thickness of coating is 30 to 40 μm, honing or polishing after chromium plating.
As improvement, before cylinder cap and cylinder bottom coordinate with thin cylinder screw thread and tighten, happy Thailand's adhesive is added on screw thread,
To improve threaded connection reliability.
Used as improvement, the thermosetting resin uses phenolic resin or epoxy resin M03 adhesives, and thermosetting resin is in carbon
Ratio in fibrous composite enhancement layer is more than 20%.
Used as improvement, the carbon fibre composite enhancement layer outer surface of the cylinder barrel sprays one layer of aromatic polyester fibres material
As protective coating.
Used as improvement, the piston rod surface is by chromium plating process, 15 to 25 μm of thickness of coating；Piston is connected with piston rod
Using H9 grades of cooperation, the surface roughness Ra of piston rod is 0.63 to 2.5 μm in aperture；Cushion collar and piston that piston passes through both sides
Bar is fixed.
The present invention has had the advantage that compared with prior art：
First, the cylinder assembly of the hydraulic cylinder has used the carbon fibre composite of high intensity, and it is in intensity, rigidity, anti-tired
It is more much higher than existing all-metal hydraulic cylinder in labor performance；
Second, it is lightweight, the lightweight requirements in the fields such as engineering machinery, Aero-Space, auto industry can be met；
3rd, there is lower energy consumption, power is saved, economy is improved, hydraulic product is more preferably met the requirement of energy-conserving and environment-protective；Its
Four, because carbon fibre composite has good decay resistance, it is used under severe operating mode.
Brief description of the drawings
Fig. 1 is the enhanced hydraulic cylinder structure schematic diagram of lightweight of the present invention.
Fig. 2 is metal inner lining structural representation.
In figure:1- cylinder bottoms, the hydraulic fluid ports of 2- first, 3- metal inner linings, 4- carbon fibre composite enhancement layers, cushion collar after 5-,
6- pistons, 7- dynamic sealings one, cushion collar before 8-, 9- piston rods, 10- cylinder caps, the hydraulic fluid ports of 11- second, 12- dynamic sealings two.
Specific embodiment
In order to allow those skilled in the art scholar to more fully understand the present invention program, specific embodiment party of the invention is described below
Formula, and be described further with reference to accompanying drawing.
As shown in figure 1, a kind of enhanced lightweight hydraulic cylinder of carbon fibre composite, including by cylinder barrel two ends respectively with cylinder
The hydraulic cylinder that bottom 1 and cylinder cap 10 are connected to form, is provided with piston 6 and the piston rod 9 being connected with piston 6, the work in the cylinder barrel
Stretched out outside hydraulic cylinder in the hole that the one end of stopper rod 9 is set from cylinder cap 10, the hole inwall and piston 6 of piston rod 9 and cylinder cap 10 with
Inner wall of cylinder is equipped with dynamic sealing, and the first hydraulic fluid port 2 and the second hydraulic fluid port 11, first oil are respectively equipped with cylinder bottom 1 and cylinder cap 10
The hydraulic fluid port 11 of mouth 2 and second is connected with hydraulic oil system respectively, drives the both sides of piston 6 in cylinder barrel to slide by hydraulic oil；It is described
Cylinder barrel covers carbon fibre composite enhancement layer 4 and constitutes by metal inner lining 3 in outer surface, the carbon fibre composite enhancement layer
4 be by intensity more than 3500MPa carbon fibre material for reinforcing material, thermosetting resin be matrix, using Wet Winding Process into
Type technique is made.The high-strength aluminum alloy of the cylinder bottom 1, cylinder cap 10, piston 6, cushion collar by intensity more than 500MPa is made,
The material of the metal inner lining 3 is 45# steel, and the material of the piston rod 9 is hard chromium-plated steel.Dynamic sealing on the piston 6
1 and piston rod 9 on dynamic sealing 2 12 select corresponding standard component according to GB.
The carbon fibre material is carbon fibre precursor, carbon fiber unidirectional cloth and carbon fiber arrowband cloth, and the carbon fiber is combined
The wet therapy forming process of Material reinforcement layer 4 refers to based on carbon fibre precursor, supplemented by carbon fiber unidirectional cloth, carbon fiber arrowband cloth
Winding process；Specially：Carbon fibre precursor, carbon fiber unidirectional cloth and carbon fiber arrowband cloth are first carried out using thermosetting resin
Impregnation, is then wound on the metal inner lining 3 as core under tension force, and the last cured demoulding obtains cylinder barrel.
In the wet therapy forming process, the canoe of carbon fibre material is after impregnation：The bottom on metal inner lining 3
Wound using carbon fiber unidirectional cloth, intermediate layer is wound using carbon fibre precursor, outermost layer is wound using carbon fiber arrowband cloth；Most
The carbon fiber unidirectional cloth winding layer of bottom is wound using internal layer without pretightning force, and winding angle is 0 °；Carbon fiber to intermediate layer is former
Silk winding layer applies pretightning force, and winding angle is 45 ° to 90 °；Outermost carbon fiber arrowband cloth winding layer is used without pretightning force
Winding, winding angle is 90 °；It is heating and curing by 130 to 140 DEG C after the completion of winding, carbon fibre composite enhancing after the demoulding
Layer 4 and metal inner lining 3 are tightly bonded together.
The cylinder bottom 1 is provided with buffering confined space, and piston 6 is provided with and buffering confined space cooperation near the side of cylinder bottom 1
Cushion collar 5 afterwards.
The metal inner lining 3 is the thin cylinder that a kind of two ends inside thickeies, and thin cylinder leads to cylinder cap 10 and cylinder bottom 1
Threaded connection is crossed, the screw thread is the fine thread of 6 class precisions；The interlude inwall of the metal inner lining 3 is surface-treated, and is made
Its surface roughness roughness Ra value is between 0.1 to 0.4；The interlude inner wall surface processing mode of the metal inner lining 3 is：First
In the interlude inner wall surface chromium plating of metal inner lining 3, thickness of coating is 30 to 40 μm, honing or polishing after chromium plating.
Before cylinder cap 10 and cylinder bottom 1 coordinate with thin cylinder screw thread and tighten, happy Thailand's adhesive is added on screw thread, to improve
Threaded connection reliability.
The thermosetting resin uses phenolic resin or epoxy resin M03 adhesives, and thermosetting resin is compound in carbon fiber
Ratio in Material reinforcement layer 4 is more than 20%.
The outer surface of carbon fibre composite enhancement layer 4 of the cylinder barrel sprays one layer of aromatic polyester fibres material as protection
Coating.
The surface of the piston rod 9 is by chromium plating process, 15 to 25 μm of thickness of coating；Piston 6 is connected aperture and adopts with piston rod 9
With H9 grades of cooperation, the surface roughness Ra of piston rod 9 is 0.63 to 2.5 μm；Preceding cushion collar 8, rear buffering of the piston 6 by both sides
Set 5 is fixed with piston rod 9.
The foregoing is only the preferred embodiments of the present invention, it is noted that for those skilled in the art
For, on the premise of the technology of the present invention principle is not departed from, some modifications, improvement, replacement can be made, these are changed, improve, replace
Change and also should be regarded as protection scope of the present invention.
Claims (10)
1. the enhanced lightweight hydraulic cylinder of a kind of carbon fibre composite, including be connected with cylinder bottom and cylinder cap respectively by cylinder barrel two ends
The hydraulic cylinder of composition, it is characterised in that：Piston and the piston rod being connected with piston, described piston rod one end are provided with the cylinder barrel
Stretched out outside hydraulic cylinder in the hole set from cylinder cap, piston rod is equipped with dynamic with the hole inwall and piston of cylinder cap with inner wall of cylinder
Sealing, is respectively equipped with the first hydraulic fluid port and the second hydraulic fluid port on cylinder bottom and cylinder cap, first hydraulic fluid port and the second hydraulic fluid port respectively with hydraulic pressure
Oil system is connected, and drives the piston both sides in cylinder barrel to slide by hydraulic oil；The cylinder barrel is covered by metal inner lining in outer surface
Carbon fibre composite enhancement layer is constituted, and the carbon fibre composite enhancement layer is fine in the carbon of more than 3500MPa by intensity
Dimension material is reinforcing material, thermosetting resin is matrix, is made of wet winding technology technique.
2. the enhanced lightweight hydraulic cylinder of a kind of carbon fibre composite according to claim 1, it is characterised in that：The carbon
The wet therapy forming process of fibrous composite enhancement layer refers to：By carbon fibre precursor, carbon fiber unidirectional cloth and carbon fiber arrowband cloth
Impregnation first is carried out using thermosetting resin, is then wound under tension force on the metal inner lining as core, most afterwards through solid
Change the demoulding and obtain cylinder barrel.
3. the enhanced lightweight hydraulic cylinder of a kind of carbon fibre composite according to claim 2, it is characterised in that：It is described wet
In method moulding process, the canoe of carbon fibre material is after impregnation：The bottom on metal inner lining uses carbon fiber one-way
Cloth is wound, and intermediate layer is wound using carbon fibre precursor, and outermost layer is wound using carbon fiber arrowband cloth；In the carbon fiber list of the bottom
Wound without pretightning force using internal layer to cloth winding layer, winding angle is 0 °；Carbon fibre precursor winding layer to intermediate layer applies pre-
Clamp force, winding angle is 45 ° to 90 °；Outermost carbon fiber arrowband cloth winding layer is used without pretightning force winding, and winding angle is
90°；It is heating and curing by 130 to 140 DEG C after the completion of winding, carbon fibre composite enhancement layer and metal inner lining be tightly after the demoulding
It is bonded together.
4. the enhanced lightweight hydraulic cylinder of a kind of carbon fibre composite according to claim 1, it is characterised in that：The cylinder
Bottom is provided with buffering confined space, and piston is provided with the cushion collar coordinated with buffering confined space near cylinder bottom side.
5. the enhanced lightweight hydraulic cylinder of a kind of carbon fibre composite according to claim 1, it is characterised in that：The gold
Category liner is the thin cylinder that a kind of two ends inside thickeies, and thin cylinder is connected through a screw thread with cylinder cap and cylinder bottom, the spiral shell
Line is the fine thread of 6 class precisions；The metal inner lining interlude inwall is surface-treated, and makes its surface roughness roughness
Ra values are between 0.1 to 0.4.
6. the enhanced lightweight hydraulic cylinder of a kind of carbon fibre composite according to claim 5, it is characterised in that：The gold
Belonging to liner interlude inner wall surface processing mode is：First in metal inner lining interlude inner wall surface chromium plating, thickness of coating be 30 to
40 μm, honing or polishing after chromium plating.
7. the enhanced lightweight hydraulic cylinder of a kind of carbon fibre composite according to claim 5, it is characterised in that：In cylinder cap
Coordinate with cylinder bottom and thin cylinder screw thread before tightening, happy Thailand's adhesive is added on screw thread, to improve threaded connection reliability.
8. the enhanced lightweight hydraulic cylinder of a kind of carbon fibre composite according to claim 1, it is characterised in that：The heat
Thermosetting resin uses phenolic resin or epoxy resin M03 adhesives, and thermosetting resin is in carbon fibre composite enhancement layer
Ratio is more than 20%.
9. a kind of enhanced lightweight hydraulic cylinder of the carbon fibre composite according to claim 1 to 8 any one, its feature
It is：The carbon fibre composite enhancement layer outer surface of the cylinder barrel sprays one layer of aromatic polyester fibres material and is applied as protection
Layer.
10. the enhanced lightweight hydraulic cylinder of a kind of carbon fibre composite according to claim 1 to 8 any one, it is special
Levy and be：The piston rod surface is by chromium plating process, 15 to 25 μm of thickness of coating；Piston uses H9 with piston lever attachment hole footpath
Level coordinates, and the surface roughness Ra of piston rod is 0.63 to 2.5 μm；Piston is fixed by the cushion collar of both sides with piston rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710353675.8A CN106930998A (en) | 2017-05-18 | 2017-05-18 | A kind of enhanced lightweight hydraulic cylinder of carbon fibre composite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710353675.8A CN106930998A (en) | 2017-05-18 | 2017-05-18 | A kind of enhanced lightweight hydraulic cylinder of carbon fibre composite |
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| Publication Number | Publication Date |
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| CN106930998A true CN106930998A (en) | 2017-07-07 |
Family
ID=59429693
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| CN201710353675.8A Pending CN106930998A (en) | 2017-05-18 | 2017-05-18 | A kind of enhanced lightweight hydraulic cylinder of carbon fibre composite |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327437A (en) * | 2017-08-01 | 2017-11-07 | 沈阳玉衡科技有限公司 | The composite hydraulic cylinder body and its manufacture method of a kind of band filling skeleton |
| CN109340209A (en) * | 2018-10-29 | 2019-02-15 | 山西平阳重工机械有限责任公司 | The double telescopic oil cylinders of carbon fiber for motor-car rescue |
| CN113803317A (en) * | 2021-08-30 | 2021-12-17 | 天津理工大学 | Carbon fiber reinforced composite structure hydraulic cylinder body |
| CN115416333A (en) * | 2022-08-26 | 2022-12-02 | 浙江大学 | Self-reinforced carbon fiber hydraulic cylinder reinforcing method |
| CN117780725A (en) * | 2023-12-26 | 2024-03-29 | 沈阳欧施盾新材料科技有限公司 | Light high-strength piston cylinder and piston based on fiber composite material and preparation method |
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| CN115416333A (en) * | 2022-08-26 | 2022-12-02 | 浙江大学 | Self-reinforced carbon fiber hydraulic cylinder reinforcing method |
| CN115416333B (en) * | 2022-08-26 | 2023-08-22 | 浙江大学 | Self-reinforced carbon fiber hydraulic cylinder reinforcing method |
| CN117780725A (en) * | 2023-12-26 | 2024-03-29 | 沈阳欧施盾新材料科技有限公司 | Light high-strength piston cylinder and piston based on fiber composite material and preparation method |
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Application publication date: 20170707 |