Hydraulic cylinder system for four-way shuttle bus

Abstract

The invention discloses a hydraulic cylinder system for a four-way shuttle bus. The hydraulic cylinder system for the four-way shuttle bus comprises a lifting hydraulic cylinder unit and a steering hydraulic cylinder unit, and each hydraulic cylinder unit comprises a plurality of hydraulic cylinders which are connected in series; an upper oil cylinder of the previous hydraulic cylinder is connected with a lower oil cylinder of the next hydraulic cylinder through an oil-way pipeline; overflow valves arranged corresponding to the positions of the upper oil cylinders of the hydraulic cylinders are further included; the overflow valves on different hydraulic cylinders are connected in parallel; two ends of each overflow valve communicate with an oil inlet and an oil outlet of the correspondinghydraulic cylinder; and the valves are conducted according to the pressure difference of the oil inlet and the oil outlet. According to the pipeline arrangement for the four-way shuttle bus, automatic compensation of a hydraulic loop can be achieved, pressure losses are reduced, the synchronization direction of all the hydraulic cylinders is guaranteed, and the stability of the four-way shuttle bus is improved.

Description

technical field [0001] The invention belongs to the field of four-way shuttle vehicle control, and in particular relates to a hydraulic cylinder system for a four-way shuttle vehicle. Background technique [0002] The four-way shuttle is a handling equipment in the storage field. It has the advantages of automatic control, fast movement speed, high handling efficiency, and high operating precision. It is widely used in various storage occasions. When the four-way shuttle is carrying goods, it needs to perform pallet lifting and walking reversing operations. At present, the common four-way shuttle car uses multiple hydraulic cylinders in series to realize the lifting and reversing of the four-way shuttle car. Although the synchronization of the hydraulic cylinders can be guaranteed, the uneven quality of the goods will cause the import and export of each hydraulic cylinder. The pressure difference is inconsistent, which in turn causes some hydraulic cylinders to be in place,...

AI Technical Summary

Problems solved by technology

At present, the common four-way shuttle car uses multiple hydraulic cylinders in series to realize the lifting and reversing of the four-way shuttle car. Although the synchronization of the hydraulic cylinders can be guaranteed, the uneven quality of the goods will cause the import and export of each hydraulic cylinder. The pressure difference is inconsistent, which leads to the situation that some hydraulic cylinders are already in place and some hydraulic cylinders are still not in place

[0003] In the technical solutions adopted in the prior art, there are problems that the oil circuit is too long and the arrangement of oil pipes is cumbersome. The key point is that the automatic compensation of the hydraulic circuit cannot be realized, resulting in a lack of stability in the hydraulic system

Images