Cranes and their steering systems and rocker arms

Abstract

The invention discloses a crane as well as a steering system and a rocker arm thereof. The rocker arm comprises a fixed shaft, a front-axle rocker arm, a rear-axle rocker arm, a first locking mechanism and a second locking mechanism, wherein the front-axle rocker arm is hinged with the fixed shaft and provided with a first front-axle locking hole; the rear-axle rocker arm is hinged with the fixed shaft and provided with both a first rear-axle locking hole and a second rear-axle locking hole; the first locking mechanism is provided with a first locking part matched with both the first front-axle locking hole and the first rear-axle locking hole, as well as a first drive part for driving the first locking part to get in or out of the first front-axle locking hole and the first rear-axle locking hole; and the second locking mechanism is provided with a second locking part matched with the second rear-axle locking hole, as well as a second drive part for driving the second locking part to get in or out of the second rear-axle locking hole. The rocker arm has both a rocker arm linkage state and a rear-axle rocker arm locking state, so that the crane has both an all-wheel steering mode and a front-wheel rotating and rear-wheel locking mode correspondingly. The rocker arm has the advantages that the steering adjustment method is flexible and the rocker arm can adapt to various working conditions.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a crane, a steering system and a rocker arm thereof. Background technique [0002] Crane is a kind of construction machinery capable of lifting, transporting and loading and unloading materials. It is widely used in construction, transportation, ports, energy and farmland water conservancy and other fields, such as building bridges, installing power generation equipment, shipbuilding, and erecting wind power. generator set etc. [0003] The steering system is an important mechanism for the crane to realize the steering function. Existing crane steering systems are usually such as figure 1 As shown, the steering principle is as follows: the operator rotates the steering wheel 2, the angle actuator 3 obtains the information on the rotation angle of the steering wheel 2, and controls the steering gear 4 to drive the steering rod 5 to turn through the corresponding angle. The ...

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of using the existing steering system is that it is difficult to meet the needs of the crane under different working conditions

If the first and second axles are both front axles, the rear axle does not turn, which is difficult to meet the crane's flexible steering requirements during transition and attitude adjustment; if the first axle is the front axle of the vehicle, the second axle is the rear axle of the vehicle , when driving at high speed, the crane is prone to flick when turning, posing potential safety hazards

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