Method and device for controlling discharge rate of mixer truck and mixer truck

Abstract

Disclosed are a method and a device for controlling the discharge rate of a mixer truck and the mixer truck, comprising the control device, wherein the control method comprises the following steps: a) acquiring sound signals by detecting the working sound emitted by pumping equipment as materials are being pumped thereby; b) processing, analyzing by sampling, and extracting features of sound signals obtained; c) calculating the material pumping rate of the pumping equipment during material pumping according to characteristics of the information obtained from step b); d) controlling the discharge rate of the mixer truck using the pumping rate obtained according to a pre-stored control strategy. The control device provided is used to realize the control method, and is easy to install, has low costs, and greatly facilitates function upgrading and retrofitting of existing mixer trucks. The mixer truck comprising the control device, when operated with the pumping equipment, can adjust its own rotation rate and discharge rate in real time, cooperating with the pumping equipment much better and reducing the occurrence of overflow or empty suction by a hopper of the pumping equipment during operation.

Description

technical field [0001] The invention relates to a control method applied in the field of engineering machinery, in particular to a method for controlling the unloading speed of a mixer truck. In addition, the invention also relates to a control device for the unloading speed of a mixer truck, and a mixer truck with the control device. Background technique [0002] figure 1 Scene for concrete machinery construction. The machine on the left is a concrete transport mixer truck, and the machine on the right is a concrete pump truck. The concrete transport mixer truck transports the commercial concrete from the concrete mixing station to the construction site, and then the mixer truck pours the concrete into the hopper of the concrete pump truck, and the concrete pump truck then pumps the concrete material in the hopper to the construction site. The mixing drum 21 of the mixer truck is used for loading concrete materials. When unloading, the concrete enters the hopper 23 of th...

AI Technical Summary

Problems solved by technology

The problem that often occurs is that the feeding speed is difficult to control, and it is always fast and slow

1) If the discharge speed is too fast, the concrete material in the hopper of the pump truck will overflow, resulting in waste; the operator often takes a shovel to shovel the overflowed concrete material back into the hopper, which consumes physical strength and increases the labor intensity of the operator

2) If the discharge speed is too slow, the concrete in the hopper will be exhausted quickly, and the pumping system of the pump truck will be sucked out, which will affect the pumping efficiency, and it will also easily cause a large vibration of the boom

[0005] At present, there is no good solution to the existing problems in the existing technology. For the speed of the mixer truck unloading and the pump truck pumping material, it is impossible to coordinate with each other, dynamically and real-time adjust the unloading speed or Pump material speed to ensure consistency with each other and reduce the occurrence of overflow or suction

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