A logistics vehicle with a fully active suspension system and its application

Abstract

The invention relates to a fully-active suspension system which comprises energy accumulators, electronic gear pumps, power cylinders, swing arms, a control system and steering knuckles, wherein the front end of each steering knuckle is cylindrical and the rear end of each steering knuckle is of a plate-like structure; a hub motor stator of each wheel is fixedly connected with the cylinder of eachsteering knuckle; the plate-like structure of each steering knuckle is fixedly connected with the side of one end of each swing arm; the upper surface of one end, connected with a hub, of each swingarm is connected with each power cylinder through a ball joint; the other end of each swing arm is connected with a vehicle body through a ball joint; each power cylinder communicates with a high-pressure oil outlet of each electronic gear pump through a second oil pipe; a low-pressure oil inlet of each electronic gear pump communicates with each corresponding energy accumulator through a first oil pipe; and the control system is connected with the electronic gear pumps through control lines. All-terrain road driving of small-sized vehicles such as logistics vehicles and the like is realized,and efficient vibration suppression and vibration absorption can be achieved.

Description

technical field [0001] The invention relates to the technical field of transportation machinery, in particular to a fully active suspension system and a logistics vehicle applied thereto. Background technique [0002] With the development of modern logistics, especially the last mile of express logistics and the development of takeaway food delivery, there is an urgent need for a logistics vehicle to replace human delivery logistics in the factory. At the same time, most of the hospital drug distribution is rail logistics or human carts, which have many defects. In particular, the distribution products are valuables such as liquid crystals and glass, soupy meals, and glass-packed injection medicines. These various items require logistics vehicles to have a very high vibration reduction effect to ensure the safety of the above items. [0003] For the logistics vehicles currently used in the field, the smaller logistics vehicles basically rely on tires to absorb vibration. Th...

AI Technical Summary

Problems solved by technology

[0003] For the logistics vehicles currently used in the field, the smaller logistics vehicles basically rely on tires to absorb vibration. The tires are directly connected to the vehicle body without a suspension system, and the vibration reduction effect is not good.

For a logistics vehicle equipped with a suspension system, the volume of the vehicle body is basically equivalent to that of a passenger vehicle, limited to the structural form of the suspension, and the volume of the vehicle body cannot be reduced. This kind of logistics vehicle has many advantages in terms of cost and structure for in-plant logistics limit

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