System, method and device for setting of cantilever operating speed

Abstract

The invention discloses a system, a method and a device for setting of the cantilever operating speed. A controller in the system determines current angular speed in operation of a cantilever according to a cantilever operating angle measured by an inclination angle sensor to perform closed-loop control according to the current angular speed and a preset target angular speed, and a current value of a proportional valve current signal when the current angular speed reaches the target angular speed is determined to be the current maximum calibrated current value of the cantilever. The cantilever operating speed can be set automatically and effectively, the factor of nonuniform experience of technicians is eliminated, setting results of the same cantilever can be approximately identical, setting durations are also approximately identical, efficiency in setting operation can be improved, and accordingly the problems of high deviation of the setting results and low efficiency in setting operation when the maximum calibrated current value of the cantilever operating speed of a concrete pump truck is set manually in the prior art can be solved.

Description

technical field [0001] The invention relates to the field of boom control of concrete pump trucks, in particular to a system, method and device for setting the operating speed of a boom. Background technique [0002] The boom system is an important part of the concrete pump truck. The boom structure is mainly composed of rigid structures and has a large mass. During the expansion and contraction of the boom, the inertia is large and the position of the center of mass changes quickly. Therefore, the boom is extended and retracted. Speed ​​control research is a key technical point to realize the stable deployment and safe control of the boom, which is beneficial to prevent premature fatigue damage of the boom structure. [0003] Such as figure 1 As shown, the principle of controlling the operating speed of the boom system in the prior art is: after the boom pump 1 is started, the pressure oil is pumped, the controller 4 controls the unloading valve 2 to be energized, and the ...

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Problems solved by technology

[0007] Embodiments of the present invention provide a system, method, and device for setting the operating speed of the boom, which are used to solve the problem of large deviations in the setting results and difficult setting operations when manually setting the maximum calibrated current value of the operating speed of the concrete pump truck boom in the prior art. The problem of inefficiency

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