Titanium alloy double telescopic oil cylinder
A double-telescopic oil cylinder and titanium alloy technology, applied in the direction of fluid pressure actuators, etc., can solve the problems that the oil cylinder cannot meet the requirements of the rail height of the motor car, etc., so as to reduce the space size, reduce the weight, and solve the problem of long-term lock The effect of tight and safe pressure relief
Active Publication Date: 2013-08-07
SHANXI PINGYANG IND MACHINERY
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[0017] Titanium alloy double telescopic oil cylinder, including cylinder bottom 1 and top cover 2, between cylinder bottom 1 and top cover 2, there is a live column 3, and the live column 3 is covered with a middle cylinder 4 made of titanium alloy TC4 and an aluminum alloy LC4 The outer cylinder 5 made, the bottom circumferential surface of the live column 3 and the middle cylinder 4 are all provided with a combined piston seal 6, and the upper circumferential surfaces of the live column 3 and the middle cylinder 4 are all provided with a combined piston rod seal 7 and a dustproof seal. O-ring 9 and back-up ring 10 distributed up and down are arranged on the cylindrical surface where cylinder bottom 1 and outer cylinder 5 are in contact, and the sealing between each part of the oil cylinder is made of narrow and deep polyurethane cutting seal, and the side wall of outer cylinder 5 A hydraulic control check valve 11 is fixed;
[0018] The hydraulic control check valve 11 inclu...
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The invention particularly relates to a titanium alloy double telescopic oil cylinder, and the problems that an existing oil cylinder cannot meet the requirements of a bullet train track height and is inconvenient to carry are solved. A middle cylinder and an outer cylinder are sleeved outside a plunger, piston combination seals are arranged at the bottom of the plunger and the bottom of the middle cylinder, piston rod combination seals and dustproof rings are arranged on the upper portion of the plunger and the upper portion of the middle cylinder, an O-shaped ring and a check ring are arranged on the cylindrical surface of a bottom cylinder, and a hydraulic control one-way valve is fixed on a side wall of the outer cylinder. The hydraulic control one-way valve comprises a casing, an upper cavity quick connector and a lower cavity quick connector are arranged on the outer side of the casing, the upper cavity quick connector is communicated with an upper cavity oil port and an oil port on the upper portion of an ejector rob, the lower cavity quick connector is communicated with a lower cavity oil port and an oil port on the lower portion of the ejector rob, the lower cavity oil port is communicated with the middle cylinder and the bottom of the plunger, a first oil duct is arranged in the outer cylinder, a second oil duct is arranged in the middle cylinder, and screws and oil duct seal plugs are arranged at the upper end of the outer cylinder and the upper end of the middle cylinder. Height dimensions of the oil cylinder are reduced, weight of the oil cylinder is reduced, and the strength requirements of the thin-wall middle cylinder are also met.
Description
technical field [0001] The invention relates to hydraulic components for high-speed railways, in particular to a titanium alloy double telescopic oil cylinder. Background technique [0002] During the "Twelfth Five-Year Plan" period, with the rapid development of my country's high-speed railways, high-speed trains will have new breakthroughs in terms of structure and performance. In order to improve the running speed of the train, the stability of the body, etc., there are certain differences between high-speed trains and ordinary trains. The most typical structural differences are: first, the height of the rails is low; second, the weight of the body. [0003] Whether the high-speed railway can operate safely depends on two key points: first, high-speed trains require safe and reliable operation; second, in the event of a sudden accident on the line, rapid rescue and removal of railway obstacles are required as quickly as possible. [0004] At present, the size of the main...
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IPC IPC(8): F15B15/26F15B15/16
Inventor 郑海燕马占江饶小锋张俊华吕晶霞
Owner SHANXI PINGYANG IND MACHINERY