CN204828400U - Low start -up pressure piston structure - Google Patents
Low start -up pressure piston structure Download PDFInfo
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- CN204828400U CN204828400U CN201520448620.1U CN201520448620U CN204828400U CN 204828400 U CN204828400 U CN 204828400U CN 201520448620 U CN201520448620 U CN 201520448620U CN 204828400 U CN204828400 U CN 204828400U
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Abstract
The utility model discloses a low start -up pressure piston structure, including the piston only, piston only bottom middle part is equipped with the atress end, and the atress end is boss or recess. The utility model discloses a boss shape of piston only bottom setting or the atress end that the recess appeared can increase the area of contact of preceding pressure oil of piston action and piston only to reduce the start -up pressure of piston only and improve the reaction sensitivity.
Description
Technical field
The utility model relates to a kind of piston structure, particularly the piston of wind-driven generator device, specifically a kind of low breakout pressure piston structure.
Background technique
Along with the development of science and technology, the social demand to the energy is in continuous increase, and mankind's environmental consciousness is in enhancing, more and more higher to the requirement of air quality, international, the domestic proportion of utilization to novel energies such as various pollution-free clean energy resource, renewable energy sourcess improves constantly.Wind energy is use more for convenience in all novel energies, and a kind of energy that user cost is lower can play considerable effect in international energy.
Need to use break in wind-driven generator, in break, piston is installed, but general break piston end surface is all plane structure, as shown in Figure 1-2, because processing exists certain difference, partial brake device piston end surface and oil hydraulic cylinder bottom surface are fitted closely, cause hydraulic oil can not enter the faying surface of piston end surface and oil hydraulic cylinder bottom surface, when making piston initialization, (piston not operating before) hydraulic oil active area to piston is too small, cause the too high and piston delay of response of piston breakout pressure, affect the performance of break.
Model utility content
The utility model aims to provide a kind of low breakout pressure piston structure, to solve existing break due to filler opening place fluid and the too high and piston delay of response of little the caused piston breakout pressure of piston interface, affects the problem of brake performance.
The utility model is achieved by following technical solution:
A kind of low breakout pressure piston structure, comprise piston only, described piston only center bottom is provided with force side, and described force side is boss or groove.
The beneficial effects of the utility model are:
Compared with prior art, the low breakout pressure piston structure that the utility model provides, the boss shape arranged by piston only bottom or the force side of groove type can increase the area of contact of pressure oil and piston only before piston action, to reduce the breakout pressure of piston only and to improve being quick on the draw property.And according to different brake structurals, for the break of oil-feed bottom piston cavity, force side is groove structure: for the break of oil-feed bottom piston cavity, and force side is boss structure.
Accompanying drawing explanation
Fig. 1 is existing bottom oil-feed brake plunger structural drawing;
Fig. 2 is existing side oil-feed brake plunger structural drawing;
Fig. 3-Fig. 4 is structural drawing of the present utility model;
Fig. 5 is the structural drawing of the utility model embodiment 1;
Fig. 6 is the structural drawing of the utility model embodiment 2;
In figure: 1-piston only, 2-force side, 3-oil hydraulic cylinder, 4-filler opening.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described further, but described in required protection domain is not limited to;
As shown in Figure 3-4, the low breakout pressure piston structure that the utility model provides, comprise piston only 1, described piston only 1 center bottom or surrounding are provided with force side 2, centered by described force side 2 or surrounding groove.The force side 2 of groove type arranged by piston only 1 bottom can increase the area of contact of pressure oil and piston only 1 before piston action, to reduce the breakout pressure of piston only 1 and being quick on the draw property of raising.
Embodiment 1: when the oil hydraulic cylinder 3 adopted is rising pouring hydraulic oil as shown in Figure 5, circular groove is offered in piston only 1 center bottom, when needs start piston, hydraulic oil passes through the filler opening 4 of oil hydraulic cylinder 3 center bottom to oiling in cylinder, first hydraulic oil be injected in groove, namely the area of contact between hydraulic oil and piston only 1 is made to be increased to groove area from original filler opening 4 area adding of groove, namely increase effectively the area of contact of piston only 1 relative to hydraulic oil, effectively can reduce the breakout pressure of piston only 1 and improve being quick on the draw property.
Embodiment 2: when the oil hydraulic cylinder 3 adopted is side feeding type as shown in Figure 6, in piston only 1 center bottom, circular boss is set, when starting piston, hydraulic oil passes through the filler opening 4 of oil hydraulic cylinder 3 sidewall to oiling in cylinder, first hydraulic oil be injected in the cavity outside boss, namely the area of contact between hydraulic oil and piston only 1 is made to be increased to cavity area from original filler opening 4 area adding of boss, namely increase effectively the area of contact of piston only 1 relative to hydraulic oil, effectively can reduce the breakout pressure of piston only 1 and improve being quick on the draw property.
Claims (1)
1. a low breakout pressure piston structure, comprises piston only (1), it is characterized in that: described piston only (1) center bottom is provided with force side (2), and described force side (2) are boss or groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520448620.1U CN204828400U (en) | 2015-06-26 | 2015-06-26 | Low start -up pressure piston structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520448620.1U CN204828400U (en) | 2015-06-26 | 2015-06-26 | Low start -up pressure piston structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204828400U true CN204828400U (en) | 2015-12-02 |
Family
ID=54686005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520448620.1U Expired - Fee Related CN204828400U (en) | 2015-06-26 | 2015-06-26 | Low start -up pressure piston structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204828400U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104930088A (en) * | 2015-06-26 | 2015-09-23 | 贵州新安航空机械有限责任公司 | Piston structure reducing starting pressure of brake |
-
2015
- 2015-06-26 CN CN201520448620.1U patent/CN204828400U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104930088A (en) * | 2015-06-26 | 2015-09-23 | 贵州新安航空机械有限责任公司 | Piston structure reducing starting pressure of brake |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 |