Buffering oil cylinder

Abstract

The invention provides a buffering oil cylinder, and relates to the technical field of hydraulic oil cylinders. The buffering oil cylinder comprises an oil cylinder body, a piston rod, a left end cover and a right end cover, and further comprises a piston body, an oil storage portion, a first valve portion and a second valve portion; and through reciprocated movement of the piston rod, when the piston body makes contact with the left end cover, the first valve portion makes contact with the left end cover, the first valve portion is opened, hydraulic oil inside a second oil cavity flows into afirst oil cavity through the oil storage portion to achieve the buffering function, when the piston body makes contact with the right end cover, the second valve portion makes contact with the rightend cover, the second valve portion is opened, hydraulic oil inside the first oil cavity enters the second oil cavity through the oil storage portion to achieve the buffering function, the technical problems that in the prior art, traditional buffering columns and buffering sleeves have special requirements for oil cylinder structures, the tolerance of the buffering columns and the buffering sleeves is difficult to control, and the buffering effect is lost by inattention are solved, and the technical effects that the buffering structure inside the oil cylinder is simple and the buffering effect is remarkable are achieved.

Description

technical field [0001] The invention relates to the technical field of hydraulic cylinders, in particular to a buffer cylinder. Background technique [0002] On construction machinery such as automobile cranes and aerial work vehicles, many oil cylinders need to be equipped with buffer structures, especially on the bottom side of the cylinder. During the return stroke of the oil cylinder, because of the load, the return speed is very fast and the pressure in the small cavity is very high. At this time, no matter Whether the customer needs cushioning or not, it is reasonable to design a cushioning structure on the side of the large cavity of the oil cylinder. This is not only the protection of the oil cylinder itself, but also the responsibility for the customer's complete machine. [0003] Common forms of cylinder bottom side buffering are nothing more than buffer columns and buffer sleeves. The performance of these two forms has been proven to be very stable and reliable. ...

AI Technical Summary

Problems solved by technology

[0004] However, the traditional buffer column and buffer sleeve have special requirements for the cylinder structure. For example, there must be enough space to arrange the buffer space at the bottom of the cylinder to accommodate the buffer column and buffer sleeve. If the thickness of the cylinder bottom is limited, it cannot be realized. In addition, the buffer column and buffer The tolerance of the sleeve is difficult to control, and the cushioning effect will be lost if you don't pay attention

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