Hydraulic oil cylinder buffering system

Abstract

The invention discloses a hydraulic oil cylinder buffering system which comprises a two-position four-way electromagnetic reversing valve and a one-way valve group, wherein one end of the two-positionfour-way electromagnetic reversing valve is connected with two pipelines, the other end of the two-position four-way electromagnetic reversing valve is connected with the one-way valve group and a pipeline, the one-way valve group comprises a first one-way valve and a second one-way valve which are connected in parallel, and a throttle valve which is connected with the second one-way valve in series, the flow direction of the first one-way valve points to a hydraulic oil cylinder, and the flow direction of the second one-way valve is back on to the hydraulic oil cylinder. The hydraulic oil cylinder buffering system disclosed by the invention improves the stability and the operation comfort of the whole machine, reduces the physical impact of a piston on the oil cylinder, prolongs the service life of the oil cylinder, and has the advantages of simple structure, few types and quantity of hydraulic elements, low cost and stronger practicability.

Description

technical field [0001] The invention relates to a buffer system, in particular to a hydraulic oil cylinder buffer system. Background technique [0002] During the rapid movement of the hydraulic cylinder, strong impacts, noises and even mechanical collisions such as tie rods will be generated at the end of the stroke. Especially in the case of high pressure, this effect is more obvious and seriously affects the service life of the cylinder. Therefore Appropriate braking and buffering must be performed before the end of the movement to ensure the service life of the system and the cylinder. At present, most of the hydraulic cylinders for loaders have few cushioning designs (such as bucket cylinders), but only leave a margin in the design of the cylinder stroke, relying on the physical impact between the working device and the limit block to limit the position, so as to avoid The purpose of the tie rod, but because of the strong physical impact, on the one hand, it affects th...

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Problems solved by technology

[0004] In view of the above problems, the present invention provides a hydraulic cylinder buffer system, which aims to solve the problem that in the existing hydraulic system, due to the reaction of physical impact, the oil cylinder will also bear a reaction force, which affects the service life of the oil cylinder; In the initial stage of the oil process, it takes a period of time to pass through the throttle valve to drive the reversing valve to change direction, which affects the working efficiency of the hydraulic system; solve the complex structure of the hydraulic system, the variety and quantity of hydraulic components, the high risk of oil leakage, and the cost Higher, overall machine stability and poor operating comfort

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