CN203939800U - Oil hydraulic cylinder - Google Patents
Oil hydraulic cylinder Download PDFInfo
- Publication number
- CN203939800U CN203939800U CN201320651934.2U CN201320651934U CN203939800U CN 203939800 U CN203939800 U CN 203939800U CN 201320651934 U CN201320651934 U CN 201320651934U CN 203939800 U CN203939800 U CN 203939800U
- Authority
- CN
- China
- Prior art keywords
- spring
- hydraulic cylinder
- oil hydraulic
- utility
- model
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of oil hydraulic cylinder, comprise cylinder body, the spring fixing rod of spring and fixing spring, its medi-spring overall length is 132mm, pitch is 16.52mm.Oil hydraulic cylinder described in the utility model is applied on certain type main frame, and through checking repeatedly, spring occurs without failure modes such as fracture, permanent deformation cannot recover, restoring force deficiencies, and improvement effect is obvious, has effectively extended the working life of oil hydraulic cylinder.
Description
Technical field
The utility model 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 realize 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 with spring.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 utility model relates to a kind of Security and the higher oil hydraulic cylinder of stability.
Oil hydraulic cylinder described in the utility model, 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 diameter of spring fixing rod is than little 3 mm of spring inside diameter.
Oil hydraulic cylinder described in the utility model is applied on certain type main frame, and through checking repeatedly, spring occurs without failure modes such as fracture, permanent deformation cannot recover, restoring force deficiencies, and improvement effect is obvious, has effectively extended the working life of oil hydraulic cylinder.
brief description of the drawings
Fig. 1 is partial sectional view of the present utility model.
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 described in the utility model, 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 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.
Improving the flexible travel displacement figure of rear spring from Fig. 2 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 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 |
|---|---|---|---|
| CN201320651934.2U CN203939800U (en) | 2013-10-22 | 2013-10-22 | Oil hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320651934.2U CN203939800U (en) | 2013-10-22 | 2013-10-22 | Oil hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203939800U true CN203939800U (en) | 2014-11-12 |
Family
ID=51859116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320651934.2U Expired - Fee Related CN203939800U (en) | 2013-10-22 | 2013-10-22 | Oil hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203939800U (en) |
-
2013
- 2013-10-22 CN CN201320651934.2U patent/CN203939800U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| MX338947B (en) | Cylinder shock assembly. | |
| CN204924518U (en) | Quick sensor of big displacement power | |
| WO2014012293A8 (en) | Internal-combustion engine connecting rod having hard base and soft structure | |
| EP2587087A3 (en) | Hydraulic shock absorber | |
| WO2012033982A3 (en) | High pressure pump including hollow stud | |
| CN203939800U (en) | Oil hydraulic cylinder | |
| CN202468288U (en) | Plunger and water inlet and outlet valve assembly of cleaning machine | |
| CN103185115A (en) | Pseudo-rigid-body model of flexible slider-crank mechanism | |
| CN202402435U (en) | Bolt-nut structure for high-temperature high-pressure shielding electric pump | |
| CN205545151U (en) | Plane deformation measuring photovoltaic module surface loading test device | |
| CN103511393A (en) | Hydraulic cylinder | |
| CN203197930U (en) | Simple anti-skidding mechanical arm | |
| CN205908609U (en) | Controllable anti -loosening connecting structure of engine cylinder housing pretightning force | |
| CN202892267U (en) | Back folding device of wheel chair | |
| CN204025226U (en) | A kind of spring reverse motion for piston mechanism | |
| CN204123812U (en) | Full-automatic stamping machine | |
| CN203335522U (en) | Stainless steel minitype cylinder | |
| CN203189597U (en) | Oil pressure damping device with external oil way | |
| CN103410805A (en) | Floating one-way double-rod air cylinder | |
| CN204152964U (en) | The fixed structure of unidirectional needle bearing sheetmetal spring and retainer | |
| CN204476999U (en) | Combination lock screw | |
| CN204239583U (en) | A kind of buffer stopper for motor car engine | |
| CN204941906U (en) | A kind of Novel compressor piston bar | |
| CN205184679U (en) | Appurtenance of assembly piston | |
| CN103511395A (en) | Anti-rotating anti-head-lowering device of piston rod of air cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141112 Termination date: 20151022 |
|
| EXPY | Termination of patent right or utility model |