Automatic control method and system for lifting operation of crane

Abstract

The invention discloses an automatic control method for lifting operation of a crane. The automatic control method comprises the following step: (1) judging whether a current control mode is an automatic control mode or not, if so, executing the subsequent steps; (2) outputting an engine rotation speed control signal to control an engine to work at corresponding rotation speed, and simultaneously outputting a proportional solenoid valve control signal to control a proportional solenoid valve to open with corresponding opening degree. When the crane enters the automatic control mode, the engine rotation speed control signal is output to control the engine to work at corresponding rotation speed, and the proportional solenoid valve control signal is simultaneously output to control the proportional solenoid valve to open with the corresponding opening degree. The automatic control method for the lifting operation of the crane disclosed by the invention can be used for enabling an operator to reduce and even get rid of work of continuously operating an accelerator pedal and a proportional solenoid valve operation handle, so that the attention can be paid to other operation, part of working pressure of the operator can be released, and the labor intensity of the operation personnel can be lowered. The invention further discloses an automatic control system for lifting operation of the crane.

Description

technical field [0001] The invention relates to the technical field of hoisting equipment, in particular to an automatic control method and system for hoisting operation of a crane. Background technique [0002] At present, the assembly and disassembly of small parts, as well as the hoisting construction of large heavy objects, all require cranes to accurately place these heavy objects that are inconvenient or immovable by manpower to the required positions. Cranes play a role in these tasks. played a huge role. [0003] At present, most cranes are controlled by hydraulic pressure. At present, there are many combinations of hydraulic pumps and motors for crane operations. Taking variable pumps and quantitative motors as examples, the operating mechanism of crane operations is to ensure the output of the hydraulic pump through the engine, and to ensure the output of the hydraulic pump through the proportional solenoid. The action of the valve control handle controls the open...

AI Technical Summary

Problems solved by technology

In addition, many engineering occasions require continuous operation, and various external adverse factors interfere, which undoubtedly makes the lifting operation appear arduous and arduous.

Moreover, the traditional hoisting mode relies entirely on the operator's experience, which cannot achieve the stability of the hoisting and the continuity of the action.

[0008] In addition, the traditional operation can only realize the lifting action by continuously operating the proportional solenoid valve joystick and the accelerator pedal. The operation mode is single, and the operator's continuous concentration is likely to cause fatigue and slack attention

[0009] Furthermore, based on the control process, the signal acquisition will be disturbed by human or external factors, resulting in fluctuations in the input signal; and in the signal processing stage, due to the single function of signal processing, the output of the system is not stable, and even serious consequences

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