Hydraulic damper with adjustable damping

Abstract

The invention discloses a hydraulic damper with adjustable damping. The hydraulic damper is arranged on an automobile. A hydraulic loop d is connected between an upper oil cavity b and a lower oil cavity c. An oil pressure cavity is arranged on the hydraulic loop d and comprises an oil pressure chamber, a piston valve core and two springs. The piston valve core and the two springs are arranged in the oil pressure chamber. The piston valve core divides the oil pressure cavity into a chamber e and a chamber f. Two through holes are formed in the piston valve core. The front end of a pipeline d1 is connected with the upper oil cavity b, and the tail end of the pipeline d1 is connected with the oil pressure cavity and is connected with a pipeline d3 in a bypass mode. The pipeline d3 is connected with the chamber f. A pipeline d6 is connected with the chamber f and the lower oil cavity c. The front end of a pipeline d5 is connected with the lower oil cavity c, and the tail end of the pipeline d5 is connected with the oil pressure cavity and is connected with a pipeline d4 in a bypass mode. The pipeline d4 is connected with the chamber e. A pipeline d2 is connected with the chamber e and the upper oil cavity b. Pressure difference between the two ends of the oil pressure chamber is used for pushing the piston valve core to move, so that the communication area of an oil pipe and the piston valve core is changed, the speed of oil liquid is changed when the oil liquid passes through the piston valve core, so that damping is changed, and accordingly a damping value is automatically adjusted according to road conditions in real time.

Description

technical field [0001] The invention relates to a shock absorber installed on an automobile, in particular to a hydraulic shock absorber with adjustable damping. Background technique [0002] In order to speed up the attenuation of the vibration of the frame and the body to improve the ride comfort of the car, shock absorbers are installed inside the suspension system of most cars. The basic principle of the shock absorber is to use damping to consume the energy generated in the vibration to achieve vibration reduction. The hydraulic shock absorber uses the small hole throttling fluid damping technology to realize the damping characteristics of the suspension system. The cylinder barrel also reciprocates, so that the oil in the housing repeatedly flows from one inner cavity through some narrow pores into the other inner cavity. At this time, the friction between the hole wall and the oil and the internal friction of the liquid molecules are formed. The damping force on vib...

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Problems solved by technology

[0003] In order to solve the above problems, the present invention provides a hydraulic shock absorber with adjustable damping, which aims to solve the problems of traditional shock absorbers such as unstable performance, complex structure, and low service life.

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