Safety control system for fork of forklift and method of control system

Abstract

The invention discloses a safety control system for a fork of a forklift and a method of the control system. A controller acquires a fork angle signal detected by a tilt angle sensor, a fork altitudesignal detected by an altitude switch and a fork load signal detected by a load sensor, controls the opening changes of a forward tilting solenoid valve, a backward tilting solenoid valve, a lifting solenoid valve and a falling solenoid valve, and realizes a fork extreme position buffer function, a fork forward tilting angle limiting function, a fork backward tilting speed limiting function and afork one-key leveling function. The safety control system and the method realize fork low-position buffer control, high-altitude forward tilting angle control, backward tilting speed control and one-key leveling control, so that the safety, the comfort and the convenience of drivers are improved.

Description

technical field [0001] The invention relates to the field of safety control of forklift forks, in particular to a control system and a control method for realizing the safety of forklift forks. Background technique [0002] With the rapid development of China's market economy and forklift industry, the utilization rate of forklifts in all walks of life is getting higher and higher. People's requirements for forklifts have shifted from functional requirements to high efficiency, safety, comfort, energy saving and other requirements. As the simplest and most commonly used forklift work attachment, the fork is used to carry goods of various shapes and weights. As an important component of the forklift, the corresponding working environment of the fork is becoming more and more complicated. In order to ensure the safety of the forklift Safety performance, which puts forward higher requirements for the safety control of forklifts. [0003] At present, there are the following pro...

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Problems solved by technology

[0003] At present, there are the following problems in the use of forks that need to be improved: (1) The forks tilt forward to the limit position, and the goods fall off due to inertia, causing casualties; the forks tilt back to the limit position, and the goods move backward due to inertia , causing the cargo to squeeze or injure the operator

(2) The driver inadvertently leans forward excessively when operating the fork, which may cause the cargo to fall or the forklift to tip over

(3) The reclining speed of the fork has not been controlled accordingly, causing the cargo to be easily squeezed or injured by the operator when it exceeds the corresponding height

(4) The forklift is not equipped with an active stabilization system, and the operator must manually adjust and level the fork, which causes great inconvenience when stacking goods on the shelf or picking up goods from the shelf

[0004] Although foreign countries have achieved active stability control and achieved good results, due to the blockade of foreign technology to my country, there are very few domestic research technicians on fork safety control. At present, this technology is in a blank state in China. The forklift industry is still at the low-end level. The main competitiveness lies in the low cost. It mainly relies on low prices to occupy the market. my country's technical reserves for high-end forklifts are far from enough. Under this current situation, solve and improve the corresponding problems of forklifts. For the safety performance of high-lift forklifts, it is of far-reaching significance to fill this technical gap in my country's forklift industry and improve the foreign competitiveness of my country's forklift industry.

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