Cantilever crane vibration suppression device, elevating fire truck and cantilever crane vibration suppression method

Abstract

The invention relates to a cantilever crane vibration suppression device, an elevating fire truck and a cantilever crane vibration suppression method. The cantilever crane vibration suppression method comprises a first method, the first method comprises the steps that at least two sub-control signals needing to be input to a proportional valve are determined according to the to-be-executed action of a cantilever crane (10), and the proportional valve is used for controlling the action of the cantilever crane (10); and the at least two sub-control signals are sequentially overlapped and input to the proportional valve at intervals of preset time, and the sub-control signal input later is configured to reduce vibration caused by the sub-control signal input earlier. According to the method, a time-sharing control signal input method is adopted, vibration caused by the earlier input sub-control signal to the cantilever crane is reduced through the later input sub-control signal, and vibration of the cantilever crane is effectively restrained.

Description

Technical field [0001] The present invention relates to the field of construction machinery, and in particular, therefore, a boom inhibition device, a high fire truck and an arm frame inhibition method. Background technique [0002] The boom of the large span raised fire truck is composed of a multi-fold arms (usually above 3 or more), and a variable amplitude cylinder is arranged in the connection hinge of each arm, and each section is realized by controlling the telescopic movement of the galloid cylinder. The unfamiliar movement of the arm. [0003] Since the connection hinge point of the entire arm holder is much longer, the length of the arm is poor, resulting in a sway when the boom is unfolded and retracted, especially when starting and stopping instantaneous, in an instant. When the boom is raised to a high-altitude stationary watering operation, the arm holder is swayed due to the inversion of water. In addition, due to changes in external excitement load such as strong ...

AI Technical Summary

Problems solved by technology

However, by reducing the speed of action and adjusting the buffer time to reduce the jib shaking, the deployment time of the vehicle jib is sacrificed, which is equivalent to reducing the efficiency of vehicle rescue for fire rescue equipment

However, when the boom is stationary, the boom shakes caused by changing external loads such as water spraying operations or strong winds, even if the movement speed of the boom is reduced and the buffer time is increased, the shaking of the boom cannot be effectively suppressed.

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