Oil cavity interconnecting two-stage vibration isolation balanced suspension

Abstract

The invention belongs to the technical field of automobile suspensions and particularly relates to an oil cavity interconnecting two-stage vibration isolation balanced suspension. The suspension comprises an automobile frame and two-stage shock absorbers. The two two-stage shock absorbers are arranged oppositely and connected with the automobile frame. Each two-stage shock absorber comprises a balance swing frame and oil cylinders. The middle portions of the balance swing frames are rotationally connected with the automobile frame. The two ends of each balance swing frame are connected with the automobile frame through the corresponding oil cylinders. The two ends of each oil cylinder are hinged to the automobile frame and the corresponding balance swing frame. Swing arms are hinged to thetwo ends of each balance swing frame. Dampers are arranged between the swing arms and the balance swing frames. The two ends of each damper are hinged to the corresponding swing arm and the corresponding balance swing frame. First-stage vibration isolation suspension systems are composed of the swing arms, the balance swing frames and the structures between the swing arms and the balance swing frames. Second-stage vibration isolation suspension systems are composed of the balance swing frames, the automobile frame and the structures between the balance swing frames and the automobile frame. The suspension has the low vibration transmission rate and the large suspension stroke, vibration of a ground-tire system can be further fully filtered, and a better vibration isolation effect is provided for upper installed parts such as a compartment.

Description

technical field [0001] The invention belongs to the technical field of automobile suspension, and in particular relates to a two-stage vibration-isolation balance suspension with interconnected oil chambers. Background technique [0002] Suspension is the basic guarantee for the comfort, safety and smoothness of the car, and has an important impact on the dynamic quality of the car. Due to the heavy load and complex working conditions of commercial vehicles (especially special commercial vehicles), the suspension system is required to have strong bearing capacity and vibration isolation capacity at the same time. In addition, with the increasingly stringent international environmental protection regulations, new indicators have been put forward for the vibration and noise levels and comfort of commercial vehicles. Therefore, it is necessary to develop a new type of vibration isolation suspension suitable for commercial vehicles. [0003] There are many types of commercial ...

AI Technical Summary

Problems solved by technology

Therefore, this type of suspension is generally stiff, and the comfort under small load conditions is poor

[0005] Chinese patent CN20160073560 discloses a multifunctional suspension interconnection system for oil and gas vehicles. The system realizes the interconnection of all oil cylinders on adjacent two axles by connecting the oil cylinders on each wheel of two adjacent axles, ensuring that each wheel has a better Grounding performance, so that the anti-rolling and anti-pitching ability of the suspension is enhanced, but the oil circuit of this system is more complicated. Once a certain oil cylinder is damaged, it will cause the failure of the entire suspension, and the reliability is low.

This kind of suspension can take into account comfort and load sharing, but there are many structural load components, and the longitudinal dimension is large, so it is not compact enough

[0007] Chinese patent CN201410818816 discloses the leaf spring cross-type balanced suspension. On the basis of the leaf spring balanced suspension, the leaf springs are cross-installed to save the longitudinal space and make the wheelbase of the rear axle more compact. Some structural fixing devices of the suspension are too low, which greatly affects the passability of the vehicle and is easy to damage the suspension

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