Lifting and falling platform as well as control system and control method thereof

Abstract

The invention discloses a control system of a lifting and falling platform. The control system comprises a lifting and falling signal input device, a lifting and falling drive device, a slow motion detecting switch and a controller, wherein the lifting and falling signal input device is used for receiving working platform falling signals; the lifting and falling drive device is used for driving the working platform to lift and fall; the slow motion detecting switch is used for detecting the position of the working platform, starts to disconnect after the working platform falls to a preset position, and starts to connect after the working platform is lifted to the preset position; the controller is in communication connection with the lifting and falling signal input device, the lifting and falling drive device and the slow motion detecting switch and is used for acquiring the working platform falling signals and judging whether the slow motion detecting switch is disconnected or not, if no, the lifting and falling drive device is controlled to drive the working platform to fall, and if yes, the working platform is controlled to stop after a preset period of time. Safety and stability are improved. The invention further discloses the lifting and falling platform comprising the control system and a control method of the lifting and falling platform.

Description

technical field [0001] The invention relates to the field of lifting platforms, in particular to a lifting platform and a control system thereof. In addition, the present invention also relates to a control method of the lifting platform. Background technique [0002] Lifting platforms, especially scissor-type lifting platforms, in the process of descending, in order to ensure the stability of the product, protect the safety of workers, and prevent the fork arm from being caught by the personnel next to the equipment, the design standards of the working platform require that when the scissors When descending to the position where the distance between the forks does not exceed 50mm, the descending of the working platform shall stop. And the handle must be returned to the neutral position, and it is allowed to continue to descend after more than 3 seconds. That is, it is necessary to stop the descent after the working platform drops to the second pause position. In the prior...

AI Technical Summary

Problems solved by technology

[0003] However, due to the detection error of the quick-action travel switch, there will be a difference in stroke between opening and closing. There is a height difference of about 0.5-0.8 meters between the height of the second pause and the height of the detection of high-speed walking when rising. There is a risk of overturning at high speeds

After switching to the slow-moving travel switch, the detection error is reduced and the height difference is prevented. However, due to its slow response, there will be false pauses during the second stop, and there will be two or more down pauses.

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