Highly integrated hydraulic servo oil cylinder having buffering and overload protection functions
A highly integrated and overload protection technology, applied in the field of hydraulic servo cylinder and high frequency hydraulic servo cylinder, it can solve the problem of high operating frequency, and achieve the effect of high operating frequency, light weight and small installation space.
Active Publication Date: 2015-01-21
SHANDONG UNIV
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Problems solved by technology
[0004] The present invention aims at the problems existing in the existing hydraulic servo cylinders under the working conditions of high operating frequency and large vibration and impact, and provides a highly integrated hydraulic servo cylinder with buffering and overload protection functions
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[0029] Below in conjunction with accompanying drawing this patent is described further.
[0030] As shown in the figure, the composition of the highly integrated hydraulic servo cylinder with buffer and overload protection functions includes: electro-hydraulic servo valve 1, micro hydraulic accumulator 2, safety valve 3, expansion plug Ⅰ 4, joint body 5, tail earring 6, Tensile pressure sensor 7, guide ring Ⅰ 8, combination seal ring Ⅰ 9, cylinder barrel 10, cylinder rod 11, guide ring Ⅱ 12, combination seal ring Ⅱ 13, O-ring 14, end cover 25, dust-proof seal ring 16, elastic circlip 17 , swing rod 18, bearing 19, rod end earring 20, expansion plug II 21, one-way valve 22, one-way valve oil circuit plate 23, pipe clamp 24, displacement sensor 25, high-pressure oil circuit hole P, low-pressure oil circuit hole R and Ball bearings and several screw and nut standard parts.
[0031] The cylinder 10 is processed with an inner cavity that is dynamically matched with the piston at t...
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The invention discloses a highly integrated hydraulic servo oil cylinder having buffering and overload protection functions. The highly integrated hydraulic servo oil cylinder comprises a cylinder barrel, wherein an end cover matched with the front end face and an end cover matched with the rear end face are arranged in the front and the back of the cylinder barrel respectively, the cylinder barrel, the front end cover and the rear end cover form a cylinder body provided with a hollow cavity, a piston rod and a piston which are machined integrally are installed in the hollow cavity of the cylinder body, a high-pressure oil way hole and a low-pressure oil way hole are formed in the cylinder body, and a tension and pressure sensor is installed on the rear end cover. Each of the high-pressure oil way hole and the low-pressure oil way hole is provided with a connector body fixed to the cylinder barrel, one connector body is communicated with a high-pressure loop, and the other connector body is communicated with a low-pressure loop. An electro-hydraulic servo valve, a one-way valve, a safety valve and a hydraulic accumulator are installed on the cylinder body, the hydraulic oil inflow end of the one-way valve is communicated with a system low-pressure loop hole through a one-way valve oil way plate, and the hydraulic oil outflow end of the one-way valve is communicated with a rod cavity of the oil cylinder. The hydraulic accumulator is communicated with a rodless cavity of the oil cylinder, the high-pressure end of the safety valve is communicated with the rodless cavity of the oil cylinder, and the low-pressure end of the safety valve is communicated with the system low-pressure loop.
Description
technical field [0001] The invention relates to a highly integrated hydraulic servo cylinder, especially a high-frequency hydraulic servo cylinder with buffer and overload protection functions, belonging to the technical field of hydraulic servo transmission. Background technique [0002] Hydraulic servo cylinders have the characteristics of large thrust, light weight, high integration, fast dynamic response, and high control precision, and are widely used in construction machinery, metallurgical machinery, ships, aerospace, robots and other fields. However, none of the existing hydraulic servo cylinder products has the function of elastic cushioning and overvoltage protection, and it is very easy to cause hydraulic servo cylinder seals, electro-hydraulic servo valves, sensors or actuation under the conditions of high operating frequency and large vibration impact. Objects are damaged to varying degrees or their working life is greatly shortened. [0003] Chinese patent doc...
Claims
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IPC IPC(8): F15B15/16F15B15/20F15B15/22F15B15/28F16J15/16F16J15/06
CPCF15B15/16F15B15/20F15B15/22F15B15/28F16J15/06F16J15/16
Inventor 荣学文宋锐柴汇李贻斌孟健张国腾
Owner SHANDONG UNIV
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