Title:
HYDRAULIC OPERATING MECHANISM FOR HIGH PRESSURE SWITCH AND HYDRAULIC WORKING CYLINDER THEREOF
Document Type and Number:
WIPO Patent Application WO/2015/192602
Kind Code:
A1
Abstract:
A hydraulic operating mechanism for a high pressure switch and a hydraulic working cylinder thereof. The hydraulic working cylinder comprises a cylinder body (11) that is provided with an inner cavity and a main piston (18) that is assembled into the inner cavity of the cylinder body (11) in a sealing sliding mode. An auxiliary piston (9) independent from a piston rod (1) is assembled in a rod cavity of the cylinder body (11) along the left and right direction in a sliding mode. An area difference exists between the total area of a left-side pressure acting surface, which is leftward and acted by hydraulic oil, of the auxiliary piston (9) and the total area of a right-side pressure acting surface, which is rightward and acted by the hydraulic oil, of the auxiliary piston (9). A left limiting structure and a right limiting structure for stopping the auxiliary piston at a left limiting part and a right limiting part in the motion stroke of the auxiliary piston (9) are disposed in the rod cavity corresponding to the motion stroke set for the auxiliary piston (9). The hydraulic working cylinder can reduce the acceleration of the piston rod (1) after the motion speed of the piston rod (1) meets the requirement. Also provided is the hydraulic operating mechanism using the hydraulic working cylinder.
Inventors:
GU GENQUAN (CN)
ZHAO XIANLI (CN)
WANG YAHUI (CN)
TAO PING (CN)
LIU ZHENHUA (CN)
ZHAO XIANLI (CN)
WANG YAHUI (CN)
TAO PING (CN)
LIU ZHENHUA (CN)
Application Number:
PCT/CN2014/092207
Publication Date:
December 23, 2015
Filing Date:
November 25, 2014
Export Citation:
Assignee:
STATE GRID CORP CHINA (CN)
HENAN PING GAO ELECTRIC CO LTD (CN)
PING GAO GROUP CO LTD (CN)
HENAN PING GAO ELECTRIC CO LTD (CN)
PING GAO GROUP CO LTD (CN)
International Classes:
F15B15/17; F15B15/24; F16J1/00; F16J9/00; H01H33/34
Foreign References:
| CN2851676Y | 2006-12-27 | |||
| CN1039289A | 1990-01-31 | |||
| CN202493517U | 2012-10-17 | |||
| CN203394925U | 2014-01-15 | |||
| DE102011088240A1 | 2013-06-13 | |||
| JPH09137802A | 1997-05-27 |
Attorney, Agent or Firm:
ZHENGZHOU RUIXIN INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
郑州睿信知识产权代理有限公司 (CN)
郑州睿信知识产权代理有限公司 (CN)
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