CN104235112A - Hydraulic cylinder capable of improving sealing property - Google Patents
Hydraulic cylinder capable of improving sealing property Download PDFInfo
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- CN104235112A CN104235112A CN201310227316.XA CN201310227316A CN104235112A CN 104235112 A CN104235112 A CN 104235112A CN 201310227316 A CN201310227316 A CN 201310227316A CN 104235112 A CN104235112 A CN 104235112A
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- cylinder
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- piston rod
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Abstract
The invention relates to a hydraulic cylinder capable of improving sealing property. The hydraulic cylinder comprises a cylinder body, wherein the two ends of the cylinder body are respectively and hermetically provided with a cylinder cover and a cylinder bottom, a piston rod axially penetrates in the cylinder covers in a sliding manner, and one end of the piston rod is fixedly provided with a piston; the two end walls of the cylinder body are provided with oil inlets and oil outlets, and the piston rod is fixed with the piston by a nut. According to the hydraulic cylinder, the piston and the piston rod are fixedly connected through the nut, therefore, the stable operation of the piston in the working process can be ensured. The hydraulic cylinder provided by the invention is scientific in design and reasonable in structure, is likely to realize, and is capable of effectively improving the sealing property and service life of the hydraulic cylinder.
Description
Technical field
The invention belongs to oil hydraulic cylinder technical field, specifically, is a kind of oil hydraulic cylinder improving sealability.
Background technique
Sternly often there is not oil leakage phenomenon due to cylinder cap and cylinder body seal in traditional oil hydraulic cylinder, not only reduces the quality of oil hydraulic cylinder, and affect the work of equipment.In addition, cause because cylinder cap is poorly sealed dust to enter oil cylinder inside, reduce the working life of oil cylinder.Because piston rod has certain length, when oil cylinder internal pressure is larger, piston rod is easily out of shape, thus reduces the sealability of piston and affect oil hydraulic cylinder simultaneously and normally work.Generally cast by molten iron due to piston and form, its scurf resistance is low, often needs to change, and improves maintenance cost.
By retrieval, find following patent publication us related with the present patent application, publication number is CN201368083, the document discloses a kind of single-action piston type hydraulic cylinder, by cylinder barrel, be arranged on the piston in cylinder barrel, and the piston rod to be connected with piston forms, the two ends of cylinder barrel are respectively equipped with end cap and bottom, the damping device be connected with piston rod is provided with in lower support, a point pad is provided with in described piston, one end of pad is divided to stretch out from piston, the external part of pad is divided to be provided with point pressing spring and spring seat, the other end of piston rod stretches out from the end cap of cylinder barrel, side on cylinder barrel is fixed with oil inlet pipe and oil connection by oil pipe fixed base, its opposite side is provided with back leakage connection, interference fit limited location cover in the hole of lower support set by described bottom rear end, stop collar and bottom are welded into one.
By contrast, above-mentioned patent publication us and present patent application have relatively big difference in technological scheme.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide that a kind of structure is simple, working stability is reliable and improve the oil hydraulic cylinder of sealability.
Technical solution of the present invention is achieved in that
A kind of oil hydraulic cylinder improving sealability, comprise cylinder body, cylinder body two ends are sealed and installed with cylinder cap and cylinder bottom respectively, in cylinder cap, coaxial slip installs a piston rod, one end of this piston rod is fixed with piston, cylinder body end walls is separately installed with filler opening and oil outlet, described piston rod is solidly installed by nut and piston.
And, the outer rim of described piston is coaxially installed with three O RunddichtringOs.
And the outer rim of described piston electroplates a layers of copper, the thickness of this layers of copper is 0.4mm.
And described cylinder cap is a cylindrical sleeve body structure, and is coaxially arranged in cylinder body, this cylinder cap one end and cylinder body are coaxially installed with seal ring, and coaxial installation one cylindrical sleeve between the other end with cylinder body, this cylinder cap outboard end and piston rod coaxially install a dust-proof cushion.
Advantage of the present invention and good effect are:
1, the cylinder cap of this structure is a cylinder body and co-axial seal is arranged in cylinder body, is ensured the sealing of cylinder cap, prevents leakage of oil and dust from entering in cylinder body, effectively improve the sealability of oil hydraulic cylinder by seal ring and dustproof rubber.
2, in this structure, piston and piston rod are solidly installed by nut, ensure that piston operates steadily in work process and do not loosen.
3, this structure is by electroplating a layers of copper in the outer rim of piston, improves the wear-resisting property of piston, reduces maintenance rate, effectively improves the working life of oil hydraulic cylinder.
4, design science of the present invention, rational in infrastructure, is easy to realize, and effectively improves sealability and the working life of oil hydraulic cylinder.
Accompanying drawing explanation
Fig. 1 is structure sectional view of the present invention.
Embodiment
Below in conjunction with accompanying drawing, also by specific embodiment, the invention will be further described, and following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
A kind of oil hydraulic cylinder improving sealability, as shown in Figure 1, comprise cylinder body 6, cylinder body two ends are sealed and installed with cylinder cap 3 and cylinder bottom 12 respectively, in cylinder cap, coaxial slip installs a piston rod 7, and one end of this piston rod is fixed with piston 8, and the other end of this piston rod is positioned at cylinder body outside and is fixedly mounted with suspension ring 1, these suspension ring are solidly installed by nut 2 and piston rod, cylinder body end walls are separately installed with filler opening 5 and oil outlet 11.
In the present embodiment, the sealing configuration of described cylinder cap and cylinder body is: described cylinder cap is a cylindrical sleeve body structure, and be coaxially arranged in cylinder body, this cylinder cap one end and cylinder body are coaxially installed with seal ring 4, coaxial installation one cylindrical sleeve 15 between the other end with cylinder body, coaxially clamp a collar 14 between this cylindrical sleeve and piston rod, this cylinder cap outboard end and piston rod coaxially install a dust-proof cushion 16.
The mounting structure of this cylinder cap and cylinder body not only good sealing effect, prevent dust from entering oil cylinder inside, and this cylinder cap takes into account the effect of guide sleeve, makes hydraulic cylinder works steady, effectively improves quality and the working life of oil hydraulic cylinder.
Owing to working long hours, occur to prevent piston and piston rod joint loosening, described piston rod is solidly installed by nut 10 and piston, and bottom nut, install a spring stop piece 13.This structure effectively prevent piston work relax, ensure that the functional reliability of oil hydraulic cylinder.
In order to ensure the sealing of piston and inboard wall of cylinder block, the outer rim of piston being provided with three O RunddichtringOs 9, electroplating a layers of copper in the outer rim of piston, the thickness of this layers of copper is 0.4mm, and object is the working life of improving piston.The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. one kind is improved the oil hydraulic cylinder of sealability, comprise cylinder body, cylinder body two ends are sealed and installed with cylinder cap and cylinder bottom respectively, in cylinder cap, coaxial slip installs a piston rod, one end of this piston rod is fixed with piston, cylinder body end walls is separately installed with filler opening and oil outlet, it is characterized in that: described piston rod is solidly installed by nut and piston.
2. the oil hydraulic cylinder of raising sealability according to claim 1, is characterized in that: the outer rim of described piston is coaxially installed with three O RunddichtringOs.
3. the oil hydraulic cylinder of raising sealability according to claim 1 and 2, is characterized in that: the outer rim of described piston electroplates a layers of copper, and the thickness of this layers of copper is 0.4mm.
4. the oil hydraulic cylinder of raising sealability according to claim 1, it is characterized in that: described cylinder cap is a cylindrical sleeve body structure, and be coaxially arranged in cylinder body, this cylinder cap one end and cylinder body are coaxially installed with seal ring, coaxial installation one cylindrical sleeve between the other end with cylinder body, this cylinder cap outboard end and piston rod coaxially install a dust-proof cushion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310227316.XA CN104235112A (en) | 2013-06-08 | 2013-06-08 | Hydraulic cylinder capable of improving sealing property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310227316.XA CN104235112A (en) | 2013-06-08 | 2013-06-08 | Hydraulic cylinder capable of improving sealing property |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104235112A true CN104235112A (en) | 2014-12-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310227316.XA Pending CN104235112A (en) | 2013-06-08 | 2013-06-08 | Hydraulic cylinder capable of improving sealing property |
Country Status (1)
| Country | Link |
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| CN (1) | CN104235112A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439025A (en) * | 2016-10-24 | 2017-02-22 | 周末 | Construction hydraulic cylinder |
| CN107461376A (en) * | 2017-07-21 | 2017-12-12 | 本钢板材股份有限公司 | For improving the hydraulic cylinder of sealing property |
| CN110315285A (en) * | 2019-05-22 | 2019-10-11 | 苏州剑派实业有限公司 | A kind of preparation method of automobile high-strength wearable fastener |
| CN111926251A (en) * | 2020-07-23 | 2020-11-13 | 泰州市振亚机械设备有限公司 | Ultrahigh pressure oil cylinder and production process thereof |
-
2013
- 2013-06-08 CN CN201310227316.XA patent/CN104235112A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439025A (en) * | 2016-10-24 | 2017-02-22 | 周末 | Construction hydraulic cylinder |
| CN107461376A (en) * | 2017-07-21 | 2017-12-12 | 本钢板材股份有限公司 | For improving the hydraulic cylinder of sealing property |
| CN110315285A (en) * | 2019-05-22 | 2019-10-11 | 苏州剑派实业有限公司 | A kind of preparation method of automobile high-strength wearable fastener |
| CN111926251A (en) * | 2020-07-23 | 2020-11-13 | 泰州市振亚机械设备有限公司 | Ultrahigh pressure oil cylinder and production process thereof |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141224 |