Steering axle linkage system and crane

Abstract

The invention discloses a steering axle linkage system and a crane. The steering axle linkage system comprises a first oil cylinder, a second oil cylinder, a front steering axle and a rear steering axle. The first oil cylinder is arranged on the front steering axle and can synchronously stretch out and draw back along with steering of the front steering axle, and the second oil cylinder is arranged on the rear steering axle and can drive the rear steering axle to conduct steering. A rodless cavity of the first oil cylinder communicates with one in a rodless cavity and a rod cavity of the second oil cylinder, a rod cavity of the first oil cylinder communicates with the other one in the rodless cavity and the rod cavity of the second oil cylinder, thus stretching out and drawing back of thefirst oil cylinder can make the second oil cylinder to synchronously stretch out and draw back in a linkage mode, and the second oil cylinder stretches out and draws back so as to drive the rear steering axle to conduct steering to enable the steering direction of the rear steering axle to be opposite to that of the front steering axle. The steering axle linkage system is simple in structure and accurate in control.

Description

technical field [0001] The invention relates to the technical field of automobile steering, in particular to a steering bridge linkage system and a crane. Background technique [0002] At present, the development trend of truck crane products is obvious towards large-scale and super-large. In terms of design, it is necessary to increase the axle of the car to meet the demand for super-large tonnage products. Therefore, truck crane products with five or more axles have appeared. In order to ensure that multi-axle vehicles To improve the maneuverability and reduce tire wear, the multi-axle steering technology that increases the rear axle steering is generally adopted. At present, the rear axle steering technology of large-tonnage truck cranes mainly includes tie rod rear axle steering technology and electro-hydraulic control rear axle steering technology. [0003] Problems with pull-rod rear axle steering technology: [0004] 1. There are many pull rods and rocker structures...

AI Technical Summary

Problems solved by technology

[0004] 1. There are many pull rods and rocker structures to be arranged, which take up a lot of space and are difficult to arrange;

[0005] 2. The connection between the tie rod and the rocker arm is prone to gaps, and the tie rod is easily deformed and bent under impact, and the corner deviation is large, which is easy to wear tires;

[0006] 3. The rear axle has no locking function, and the high-speed stability is poor

[0008] 1. Control components have high precision requirements and high price and cost;

[0009] 2. The low temperature performance of the system is poor;

[0010] 3. The system is complex, and the cost of later use and maintenance is high;

[0011] 4. High professional maintenance requirements and poor convenience

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