Control device and control method for motor of movable weighing heavy goods transfer vehicle

Abstract

The invention discloses a control device and a control method for a motor of a moveable weighing type cargo transfer truck. The control device is connected to the motor disposed on a lift platform, and is characterized by comprising an execution control circuit unit connected with the motor and used for controlling a rotational speed of the motor, and further comprising a weighing sensor, an upperlimit switch and a lower limit switch that are connected with the execution control circuit unit; the execution control circuit unit controls start and stop of the motor according to load informationinput by the weighing sensor; and the execution control circuit unit controls a moving range of the lift platform on a vertical direction according to a signal input by the upper limit switch or lower limit switch. The lift control, load limitation and overcurrent protection on the moveable weighing type cargo transfer truck within a certain height travel are implemented, and the safety protection performance of the moveable weighing type cargo transfer truck is improved.

Description

technical field [0001] The invention belongs to the field of motor control, and in particular relates to a control device and a control method for a motor of a movable weighing and heavy-duty cargo transfer vehicle. Background technique [0002] At present, the state is vigorously supporting the development of the new energy industry, and has clearly put forward the goal of energy saving and emission reduction. At present, many large supermarkets, large shopping malls, and logistics companies use human transfer vehicles or diesel forklifts for their transfer platforms. Using human transfer vehicles is time-consuming and laborious. It is inconvenient to move; diesel forklifts have problems such as loud noise, serious pollution and low efficiency, so a new type of pure electric mobile weighing heavy-duty transfer vehicle is urgently needed to replace the original diesel forklift and human-powered transfer vehicle. There are still many safety problems in the car, such as: the t...

AI Technical Summary

Problems solved by technology

[0002] Now the country is vigorously supporting the development of the new energy industry, and clearly puts forward the goal of energy conservation and emission reduction. At present, many large supermarkets, large shopping malls, and logistics companies use human-powered transfer vehicles or diesel engine forklifts for their transfer platforms. Using human-powered transfer vehicles is time-consuming and labor-intensive. It is inconvenient to move; diesel forklifts have problems such as loud noise, serious pollution, and low efficiency, so there is an urgent need for a new type of pure electric mobile weighing heavy-duty transfer vehicle to replace the original diesel forklift and manpower transfer vehicle, and the electric transfer vehicle currently on the market There are still many safety problems in the car, such as: the transfer car is limited by the mechanical strength, the transfer car lacks reasonable control over the weight of the cargo, and the overload will damage the transfer car; when the goods are raised or lowered by chain transmission on the lifting platform, if If the goods rise too high, they will easily fall, and if they fall too low, they will touch the ground and damage the platform; in order to save time, the staff load a large amount of goods at one time, so that the motor is in the state of over-current operation for a long time, the motor lacks over-current protection, and the motor often burns out and other phenomena, for this reason the present invention proposes a control device and control method for the motor of a movable weighing heavy-duty cargo transfer vehicle

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