CN103511393A - Hydraulic cylinder - Google Patents
Hydraulic cylinder Download PDFInfo
- Publication number
- CN103511393A CN103511393A CN201310498184.4A CN201310498184A CN103511393A CN 103511393 A CN103511393 A CN 103511393A CN 201310498184 A CN201310498184 A CN 201310498184A CN 103511393 A CN103511393 A CN 103511393A
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- China
- Prior art keywords
- spring
- hydraulic cylinder
- fixing rod
- oil hydraulic
- fixing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention relates to an executive component in a hydraulic system. A hydraulic cylinder comprises a cylinder body, a spring and a spring fixing rod, wherein the spring fixing rod is used for fixing the spring. The overall length of the spring is 132mm, and the screw pitch is 16.52mm. The hydraulic cylinder is applied to a main engine of a certain model, through repeated verification, the failure modes that the spring is broken, permanently deforms beyond repair, and is insufficient in resilience can be avoided, the improved effect is obvious, and the service life of the hydraulic cylinder is effectively prolonged.
Description
Technical field
The present invention relates to the executive component in a kind of hydraulic system.
Background technique
Oil hydraulic cylinder is that a kind of pressure energy liquid converts mechanical energy to realize the energy conversion device of straight reciprocating motion.In some complicated oil hydraulic cylinder (the general 8～l0 MPa of working pressure), often to realize with spring the reset function (stretch out at action of hydraulic force lower piston rod, reset at spring-force driven dual lower piston rod) of piston rod.Be different from the use of normal conditions lower spring, in oil hydraulic cylinder, spring is subject to spatial constraints, stressed more complicated, and motion is frequent, very easily damages.
Summary of the invention
The present invention relates to the oil hydraulic cylinder that a kind of Security and stability are higher.
Oil hydraulic cylinder of the present invention, comprises cylinder body, the spring fixing rod of spring and fixing spring, and its medi-spring overall length is 132mm, pitch is 16.52 mm.
Preferably, the internal diameter of spring fixing rod is than little 3 mm of spring inside diameter.
Oil hydraulic cylinder of the present invention is applied on certain type main frame, and through checking repeatedly, spring non-cracking, permanent deformation cannot be extensive
The failure mode such as multiple, restoring force is not enough occurs, improvement effect is obvious, has effectively extended the working life of oil hydraulic cylinder.
accompanying drawing explanation
Fig. 1 is partial sectional view of the present invention.
Fig. 2 is safety coefficient mean value and the cycle-index graph of relation of measuring point after improving.
Fig. 3 is for improving the flexible travel displacement figure of rear spring.
embodiment
As shown in the figure, oil hydraulic cylinder of the present invention, comprises cylinder body, the spring fixing rod of spring and fixing spring, and its medi-spring overall length is 132mm, and pitch is 16.52 mm, and because spring force increases, spring rate reduces, and can extend spring working life.The internal diameter of spring fixing rod is than little 3 mm of spring inside diameter, thereby spring fixing rod and spring inside diameter are matched, bending or complications while avoiding spring motion.
Spring after improving is carried out to finite element analysis, and carry out verification experimental verification.As seen from Figure 2, safety coefficient mean value reduces along with the increase of cycle-index equally, but be greatly improved before improving, when test cycle number of times reaches 1.6e5, safety coefficient just drops to 1.0 left and right, compare original structure spring, obviously increase working life, and Safety performance is greatly improved.
From Fig. 2, improving the flexible travel displacement figure of rear spring can find out, the reset case of improving rear spring is good, and the fluctuation while replying raw footage after compression obviously reduces, and basic controlling in the reasonable scope.
Claims (2)
1. oil hydraulic cylinder, comprises cylinder body (3), the spring fixing rod (2) of spring (1) and fixing spring, and its medi-spring overall length is 132mm, pitch is 16.52 mm.
2. oil hydraulic cylinder as claimed in claim 1, is characterized in that the internal diameter of spring fixing rod (2) is than little 3 mm of spring (1) internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310498184.4A CN103511393A (en) | 2013-10-22 | 2013-10-22 | Hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310498184.4A CN103511393A (en) | 2013-10-22 | 2013-10-22 | Hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103511393A true CN103511393A (en) | 2014-01-15 |
Family
ID=49894649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310498184.4A Pending CN103511393A (en) | 2013-10-22 | 2013-10-22 | Hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103511393A (en) |
-
2013
- 2013-10-22 CN CN201310498184.4A patent/CN103511393A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140115 |