Hydraulic cylinder sealed by self-adaptive sealing ring
A self-adaptive sealing and ring sealing technology, applied in the field of hydraulic cylinders, can solve the problems of affecting the life of hydraulic cylinders, complicated assembly process, easy to heat up, etc., and achieve the effect of enhancing sealing effect, improving working performance and fast frequency response.
Inactive Publication Date: 2018-11-30
WUHAN UNIV OF SCI & TECH
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Problems solved by technology
However, its assembly process is relatively complicated, and it is prone to heat during high-speed and high-frequency response, which affects the life of the hydraulic cylinder
Method used
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[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0019] Such as figure 1 As shown, the present invention is an adaptive sealing ring sealing hydraulic cylinder, including a cylinder 1, a cylinder head 2, a piston 3, a piston rod 4, and a first oil port and a second oil port arranged on the cylinder 1; The piston 3 and the piston rod 4 are integrally formed, the piston 3 is provided with three annular rectangular grooves, the annular sealing ring 7 is installed in the middle annular rectangular groove, and the support belt 8 is installed on the annular ring symmetrically distributed on both sides of the annular sealing ring 7. In the rectangular groove, the center of the piston 3 is provided with two cross oil passages, the longitudinal oil passage communicates with the annular groove where the annular sealing ring is installed, and the two ends of the transverse oil passage respecti...
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The invention provides a hydraulic cylinder sealed by a self-adaptive sealing ring. The hydraulic cylinder sealed by the self-adaptive sealing ring comprises a cylinder barrel, a cylinder head, a piston and a piston rod, and a first oil port and a second oil port, wherein the first oil port and the second oil port are arranged on the cylinder barrel. The piston and the piston rod are integrally formed. Three annular rectangular grooves are formed in the piston. An annular sealing ring is installed in the annular rectangular groove in the middle. Support belts are installed in the annular rectangular grooves which are symmetrically distributed in the two sides of the annular sealing ring. Two cross oil ways are arranged in the center of the piston. The lengthways oil way communicates with the annular groove provided with the annular sealing ring. The two ends of the transverse oil way communicate with a rod cavity and a rodless cavity respectively. A first check valve and a second checkvalve are arranged on the parts, on the two sides of the lengthways oil way, of the transverse oil way respectively. The opening direction of the first check way is from the rodless cavity to the rodcavity. The opening direction of the second check valve is from the rod cavity to the rodless cavity. The hydraulic cylinder sealed by the self-adaptive sealing ring has the characteristics of beingsimple in structure, quick in response, small in frictional resistance, good in sealing performance, high in reliability and long in service life.
Description
technical field [0001] The invention relates to the technical field of hydraulic cylinders, in particular to an adaptive sealing ring sealing hydraulic cylinder. Background technique [0002] The hydraulic cylinder is one of the key components of the servo hydraulic system. Due to the special working conditions, the servo hydraulic cylinder is required to have a long life, high frequency response, good reliability and low friction, so as to meet the requirements of the dynamic and static characteristics of the servo hydraulic system. Therefore, the sealing form and material selection between the piston and cylinder of the servo hydraulic cylinder are very important, and it is an important factor restricting the high frequency and speed of the servo hydraulic cylinder. [0003] The seal between the piston and the cylinder is installed on the piston, and its main function is to seal the gap between the piston and the cylinder to prevent internal leakage of hydraulic oil. The...
Claims
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Login to View More IPC IPC(8): F15B15/14F15B15/20
CPCF15B15/1447F15B15/1452F15B15/202
Inventor 郑华生朱学彪李扬崔刚卢云丹
Owner WUHAN UNIV OF SCI & TECH