CN208966763U - A kind of composite material tie-bar type hydraulic cylinder - Google Patents
A kind of composite material tie-bar type hydraulic cylinder Download PDFInfo
- Publication number
- CN208966763U CN208966763U CN201821770199.6U CN201821770199U CN208966763U CN 208966763 U CN208966763 U CN 208966763U CN 201821770199 U CN201821770199 U CN 201821770199U CN 208966763 U CN208966763 U CN 208966763U
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- piston rod
- cylinder barrel
- composite layer
- steel liner
- rear end
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
A kind of composite material tie-bar type hydraulic cylinder, it is related to industrial machinery and engineering machinery field, including cylinder barrel, drive end bearing bracket, rear end cap and piston rod, cylinder barrel includes cylinder barrel steel liner, cylinder barrel composite layer, cylinder barrel composite layer is wrapped in the outside of cylinder barrel steel liner, is fixed between cylinder barrel steel liner and cylinder barrel composite layer by mutually matched multiple cylinder barrel bumps steps；Piston rod includes piston rod attachment, piston rod steel liner, piston rod composite layer, the rear end of piston rod attachment and the front end of piston rod steel liner are mutually welded, piston rod composite layer is wrapped in lining in the rear end and piston rod steel of piston rod attachment, is fixed between piston rod steel liner and piston rod composite layer by mutually matched multiple piston rod bumps steps.The utility model is by increasing bond area between composite layer and steel liner, to increase the bond strength of the two, to improve the reliability of cylinder barrel or piston rod using the structure.
Description
Technical field
The utility model relates to industrial machinery and engineering machinery field more particularly to the structures of hydraulic cylinder.
Background technique
Light-weight design is a developing direction of engineering machinery and field of industrial machinery.Hydraulic cylinder as engineering machinery and
A most widely used critical component in industrial machinery is even more essential component to large-scale engineering machinery etc..Hydraulic cylinder it is light
Quantization is of great significance for engineer machinery operation precision and energy loss reduction.The most fundamental advantage of composite material hydraulic cylinder
It is the significant weight for mitigating components and raising bearing capacity.With regard to current technology level, the piece surface of simple composite material
Quality and dimensional accuracy are unable to satisfy the requirement of key part such as cylinder barrel and piston rod in hydraulic cylinder, can only use thus
The method of steel liner outer layer covers composite material realizes light-weighted purpose.And most scheme is steel liner and multiple
The connection of condensation material is fixed by gluing knot, its internal pressure is non-constant when due to hydraulic cylinder works, often in change
In change, will cause has the tendency that removing between the two.Such scheme causes greatly to interfere to the reliability operation of hydraulic cylinder, can
Reduce service life.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and it is hydraulic to provide a kind of composite material tie-bar type
Cylinder is mainly designed by reasonable structure to reach the high reliability of composite material hydraulic cylinder.
Purpose of the utility model is realized as follows: a kind of composite material tie-bar type hydraulic cylinder, including cylinder barrel, front end
Lid, rear end cap and piston rod, cylinder barrel is between drive end bearing bracket and rear end cap, and drive end bearing bracket is connect with rear end cap by screw rod, piston
The rear end of bar is located in cylinder barrel, cylinder barrel and drive end bearing bracket are stretched out in front end；The cylinder barrel includes cylinder barrel steel liner, cylinder barrel composite material
Layer, cylinder barrel composite layer is wrapped in the outside of cylinder barrel steel liner, between cylinder barrel steel liner and cylinder barrel composite layer
It is fixed by mutually matched multiple cylinder barrel bumps steps；The piston rod includes piston rod attachment, piston rod steel liner, work
Stopper rod composite layer, the rear end of piston rod attachment and the front end of piston rod steel liner are mutually welded, piston rod composite layer
Be wrapped in lining in the rear end and piston rod steel of piston rod attachment, piston rod steel liner and piston rod composite layer it
Between fixed by mutually matched multiple piston rod bumps steps.
The utility model is strong come the combination that both increases by increasing bond area between composite layer and steel liner
Degree, to improve the reliability of cylinder barrel or piston rod using the structure.
The utility model is nested with steel sleeve in the front end of the piston rod composite layer, and steel sleeve, piston rod are multiple
Condensation material layer, piston rod attachment are connected by screw to.The threaded hole of screw can provide admittedly to tighten tailpiece of the piston rod part connecting part
Fixed or retaining part, is conveniently tightened, and can also be increased steel sleeve and is connected through a screw thread and is fixed on piston rod composite layer
Outside provides relatively reliable connection type.
In order to rationally facilitate installation steel sleeve, the steel sleeve is separable type.
The cylinder barrel bumps step of the utility model is trapezoidal, rectangle, arc-shaped middle one of which.
The piston rod bumps step of the utility model is trapezoidal, rectangle, arc-shaped middle one of which.
The cylinder barrel composite layer of the utility model be polymer matrix composites, using glass fibre, aramid fiber or
Carbon fiber is made, and piston rod composite layer is polymer matrix composites, using glass fibre, aramid fiber or carbon fiber system
At.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram of piston rod.
Fig. 3 is the first structural schematic diagram in the portion I in Fig. 1.
Fig. 4 is second of structural schematic diagram in the portion I in Fig. 1.
Fig. 5 is the third structural schematic diagram in the portion I in Fig. 1.
Specific embodiment
As shown in Figs. 1-2, composite material tie-bar type hydraulic cylinder, including cylinder barrel 8, drive end bearing bracket 6, rear end cap 15 and piston rod
1, cylinder barrel 8 is between drive end bearing bracket 6 and rear end cap 15, and drive end bearing bracket 6 is connect with rear end cap 15 by screw rod 10 and nut 16, piston
The rear end of bar 1 is located in cylinder barrel 8, cylinder barrel 8 and drive end bearing bracket 6 are stretched out in front end.
Cylinder barrel 8 includes cylinder barrel steel liner 8.2, cylinder barrel composite layer 8.1, and cylinder barrel composite layer 8.1 is wrapped in cylinder
The outside of cylinder steel liner 8.2, by mutually matched more between cylinder barrel steel liner 8.2 and cylinder barrel composite layer 8.1
A cylinder barrel bumps step 2 is fixed.Cylinder barrel steel liner 8.2 uses solid drawn tube, and cylinder barrel composite layer 8.1 is resin base
Composite material is made of glass fibre, aramid fiber or carbon fiber.
Piston rod 1 includes piston rod attachment 1.1, piston rod steel liner 1.3, piston rod composite layer 1.2, piston rod
The rear end of connector 1.1 and the front end of piston rod steel liner 1.3 are mutually welded, and piston rod composite layer 1.2 is wrapped in piston rod
On the rear end and piston rod steel liner 1.3 of connector 1.1, piston rod composite layer 1.2 is polymer matrix composites, using glass
Glass fiber, aramid fiber or carbon fiber are made.Wherein before wrapping up piston rod composite layer 1.2, need piston rod steel
1.3 surface of matter liner derusted, oil removing, the processes such as descale, in order to avoid influence adhesion strength.Piston rod composite layer
1.2, according to the specific works environment and running parameter of part, select reasonable binding material, winding material, winding process etc..Its
Middle 1.2 surface of composite layer need to spray one layer of ceramics in its outer surface, it is coarse to reach piston rod surface after roughening treatment
Degree, dimensional accuracy and corrosion resistance etc. require.Lead between piston rod steel liner 1.3 and piston rod composite layer 1.2
It is fixed to cross mutually matched multiple piston rod bumps steps 3.Steel sleeve is nested in the front end of piston rod composite layer 1.2
1.4, steel sleeve 1.4 is separable type, and steel sleeve 1.4, piston rod composite layer 1.2, piston rod attachment 1.1 pass through screw
Connection.
As shown in figure 3, cylinder barrel bumps step 2 is trapezoidal.
As shown in figure 4, cylinder barrel bumps step 2 is rectangle.
As shown in figure 5, cylinder barrel bumps step 2 is arc-shaped.
Piston rod bumps step 3 is trapezoidal, rectangle, arc-shaped middle one of which, the shape of shape and cylinder barrel bumps step 2
Equally.The depth and width of cylinder barrel bumps step 2 and piston rod bumps step 3 can be adjusted according to circumstances, by increasing composite wood
Bond area between the bed of material and steel liner, to increase the bond strength of the two, to improve the cylinder barrel 8 using the structure or live
The reliability of stopper rod 1.
Claims (6)
1. a kind of composite material tie-bar type hydraulic cylinder, including cylinder barrel, drive end bearing bracket, rear end cap and piston rod, cylinder barrel are located at drive end bearing bracket
Between rear end cap, drive end bearing bracket is connect with rear end cap by screw rod, the rear end of piston rod is located in cylinder barrel, cylinder barrel is stretched out in front end and
Drive end bearing bracket；It is characterized by: the cylinder barrel includes cylinder barrel steel liner, cylinder barrel composite layer, cylinder barrel composite layer package
In the outside of cylinder barrel steel liner, pass through mutually matched multiple cylinder barrels between cylinder barrel steel liner and cylinder barrel composite layer
Concave-convex step is fixed；The piston rod includes piston rod attachment, piston rod steel liner, piston rod composite layer, piston rod
The rear end of connector and the front end of piston rod steel liner are mutually welded, and piston rod composite layer is wrapped in the rear end of piston rod attachment
With lining in piston rod steel, pass through mutually matched multiple work between piston rod steel liner and piston rod composite layer
Stopper rod bumps step is fixed.
2. composite material tie-bar type hydraulic cylinder according to claim 1, it is characterised in that: in the piston rod composite layer
Front end be nested with steel sleeve, steel sleeve, piston rod composite layer, piston rod attachment are connected by screw to.
3. composite material tie-bar type hydraulic cylinder according to claim 2, it is characterised in that: the steel sleeve is separable type.
4. composite material tie-bar type hydraulic cylinder according to claim 1, it is characterised in that: the cylinder barrel bumps step is ladder
Shape, rectangle, arc-shaped middle one of which.
5. composite material tie-bar type hydraulic cylinder according to claim 1, it is characterised in that: the piston rod bumps step is ladder
Shape, rectangle, arc-shaped middle one of which.
6. composite material tie-bar type hydraulic cylinder according to claim 1, it is characterised in that: the cylinder barrel composite layer is tree
Resin-based composite is made of glass fibre, aramid fiber or carbon fiber, and piston rod composite layer is that resin base is compound
Material is made of glass fibre, aramid fiber or carbon fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821770199.6U CN208966763U (en) | 2018-10-30 | 2018-10-30 | A kind of composite material tie-bar type hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821770199.6U CN208966763U (en) | 2018-10-30 | 2018-10-30 | A kind of composite material tie-bar type hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208966763U true CN208966763U (en) | 2019-06-11 |
Family
ID=66764736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821770199.6U Active CN208966763U (en) | 2018-10-30 | 2018-10-30 | A kind of composite material tie-bar type hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208966763U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113915333A (en) * | 2021-10-21 | 2022-01-11 | 北京航空航天大学 | Piston rod, production method thereof and hydraulic device |
-
2018
- 2018-10-30 CN CN201821770199.6U patent/CN208966763U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113915333A (en) * | 2021-10-21 | 2022-01-11 | 北京航空航天大学 | Piston rod, production method thereof and hydraulic device |
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