Forklift and its speed control method and speed control device

Abstract

The invention discloses a speed control method of a forklift. The method includes the steps that a swinging angle signal is generated according to the swinging angle of an operating handle; the angle section where the swinging angle is located is determined according to the swinging angle signal, and the swinging angle of the operating handle of the forklift includes multiple angle sections; the rotating amplitude of an accelerating knob in the forklift is detected; and the running speed of the forklift is controlled according to the swinging angle signal, the angle section where the swinging angle is located and the rotating amplitude of the accelerating knob. By means of the speed control method of the forklift, the forklift can be controlled to start smoothly under the conditions that the swinging angle of the operating handle is quite small and the rotating amplitude of the accelerating knob is the maximum, the running speed of the forklift is limited according to the swinging angle of the operating handle, and therefore the potential safety hazard that the forklift pulls a driver to run is effectively avoided. The invention further discloses a speed control device of the forklift and the forklift comprising the speed control device of the forklift.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a speed control method of a forklift, a speed control device of a forklift and a forklift. Background technique [0002] In the related art, when operating the handle operating lever in the pedestrian-operated forklift, the handle angle sensor outputs an open sensing signal or a closing sensing signal to the main controller, and then the main controller The signals perform two different operations respectively. Specifically, the main controller controls the drive motor to "rotate" or "not rotate" according to the on-sensing signal or the off-sensing signal. [0003] The defect that the relevant technology exists is: because the driver of the walking operation type stacking forklift is to walk and follow the forklift to operate the forklift, and the handle operating rod has a length of about 1 meter, therefore, even if the handle operating rod is pushed down In the case of a sma...

AI Technical Summary

Problems solved by technology

[0003] The defect that the relevant technology exists is: because the driver of the walking operation type stacking forklift is to walk and follow the forklift to operate the forklift, and the handle operating rod has a length of about 1 meter, therefore, even if the handle operating rod is pushed down In the case of a small angle, the speed of the forklift can still reach the highest

There is no buffer in the process of increasing the speed of the vehicle, resulting in the forklift not starting smoothly

And if the acceleration knob is turned to the maximum at this time, the forklift will quickly reach the maximum speed, and the driver has not yet had time to walk at the maximum speed of the forklift to keep pace with the forklift due to inertia, so it is easy for the forklift to pull the driver to run situation, and in this case, it is easy for the driver to make a wrong operation and cause a safety accident

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