A hydraulic shock absorber for construction machinery

Abstract

The invention discloses a hydraulic damping device for engineering machinery, which comprises a telescopic rod, a support platform, a sliding rod and a sleeve; There is a sliding hole A, the inner cavity of the telescopic hole and the inner cavity of the sliding hole A are respectively provided with spring B and spring A, the bottom of the sleeve is vertically provided with a telescopic rod, and the top of the telescopic rod slides vertically into the inner cavity of the telescopic hole , a hydraulic oil chamber is vertically opened in the middle of the top end of the telescopic rod. The spring A and the spring B of the present invention respectively buffer the downward movement of the telescopic hole and the sliding hole A. Compared with the traditional hydraulic buffer shock absorber, in the actual use of the device, the downward movement of the structure to be buffered is first Buffering by spring A and spring B can effectively avoid the situation that the traditional hydraulic shock absorber is too hard at the initial stage of shock absorption, and then make the buffering process of the hydraulic shock absorber smoother, more practical, and suitable for widespread promotion and use.

Description

technical field [0001] The invention relates to the technical field of hydraulic shock absorbers, in particular to a hydraulic shock absorber for engineering machinery. Background technique [0002] The hydraulic buffer shock absorber is a buffer member that relies on hydraulic damping to buffer and decelerate the object acting on it to a stop. The hydraulic buffer shock absorber can play a certain degree of protection. [0003] The existing hydraulic shock absorber has a simple structure, and the effect of shock absorption is only achieved by limiting the flow rate of the hydraulic oil through the bypass hole. However, the existing hydraulic shock absorber still has the following problems in the actual use process: question: [0004] 1. In the actual use of the existing hydraulic buffer shock absorber, in the initial stage of buffering, the flow rate of hydraulic oil is relatively slow, the buffer of the hydraulic buffer shock absorber is relatively hard, and the effect of...

AI Technical Summary

Problems solved by technology

[0004] 1. In the actual use of the existing hydraulic buffer shock absorber, in the initial stage of buffering, the flow rate of hydraulic oil is relatively slow, the buffer of the hydraulic buffer shock absorber is relatively hard, and the effect of buffer protection is poor;

[0005] 2. In the actual use of the existing hydraulic buffer shock absorber, after the buffering is completed, the reset speed of the hydraulic buffer shock absorber is relatively slow, resulting in insufficient buffer stroke for the next buffering work

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