Multifunctional steering oil cylinder, hydraulic steering system and steering axle

Abstract

The invention relates to a multifunctional steering oil cylinder, a hydraulic steering system using the oil cylinder and a steering axle. The oil cylinder comprises a cylinder body, wherein a partition plate is arranged in the cylinder body, the cylinder body is movably provided with a first piston and a second piston, a piston rod is arranged on the second piston, the partition plate is providedwith a first mounting hole, a second mounting hole is formed in one end of the cylinder body, the first piston, the partition plate and the second piston divide an inner cavity of the cylinder body into a first cavity, a second cavity, a third cavity and a fourth cavity, the cylinder body is provided with a first oil port communicating with the first cavity, the cylinder body is provided with a second oil port communicating with the second cavity, the cylinder body is provided with a third oil port communicating with the third cavity, and the cylinder body is provided with a fourth oil port communicating with the fourth cavity. When the oil cylinder of the structure is equipped with different hydraulic systems, functions of a hydraulic power-assisted system and hydraulic self-steering canbe realized, the universality is high, the oil cylinder of the same structure can be used for the hydraulic power-assisted steering system and a hydraulic self-steering system, and the cost is saved.

Description

technical field [0001] The invention relates to the field of vehicle steering systems, in particular to a multifunctional steering oil cylinder, a hydraulic steering system and a steering axle using the oil cylinder. Background technique [0002] Trailer steering axles are divided into power-assisted steering and self-steering. Steering axles generally include left wheels 1, right wheels 2, axles 3 and oil cylinders, as well as left steering knuckle arms 4, right steering knuckle arms 5 and connecting left and right steering wheels. Tie rod 6 of the articulated arm, such as figure 1 with figure 2 shown. However, the former mostly adopts the form of a single-acting oil cylinder, and the number of oil cylinders 7 is two, such as figure 1 shown. The latter mostly adopts a centered locking cylinder 9 or a cylinder structure, such as figure 2 shown. According to the above situation, the two types of steering axles and oil cylinders cannot be used in common. In this way, w...

AI Technical Summary

Problems solved by technology

According to the above situation, the two types of steering axles and oil cylinders cannot be used in common. In this way, when other requirements remain unchanged, they need to be produced and managed according to two different products, which will virtually increase product management costs and cause more problems. inventory

In addition, the power steering axle needs to install oil cylinders at the left and right positions respectively, the structure is complicated, the weight of the whole bridge is heavy, the cost is high, and it will consume more fuel at the same time

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