Safety protection device for preventing door plate from falling

Abstract

The invention discloses a safety protection device for preventing a door plate from falling. The safety protection device comprises a base, a pushing oil cylinder, a fixed shaft, a falling prevention stop block and a transmission rod; a cylinder barrel of the pushing oil cylinder is fixed to one side of a door plate lifting rail through the base; a limiting mechanism is installed on a piston rod of the pushing oil cylinder; a sliding groove is formed in the limiting mechanism; a limiting shaft is fixed to the end of the transmission rod; the limiting shaft is located in the sliding groove and can slide relative to the sliding groove; the fixed shaft is sleeved with one end of the falling prevention stop block, and the end of the falling prevention stop block can rotate relative to the fixed shaft; the end, arranged on the fixed shaft in a sleeving manner, of the falling prevention stop block is fixedly connected with the transmission rod; and the piston rod of the pushing oil cylinder stretches and retracts to drive the limiting shaft to move so as to drive the transmission rod and the falling prevention stop block to rotate relative to the fixed shaft. According to the safety protection device for preventing the door plate from falling, real-time protection is conducted through the mechanical stop block, protection is free of time delay, and stability is high.

Description

technical field [0001] The invention relates to a safety protection device for a folding door, in particular to a safety protection device for preventing a door panel from falling. Background technique [0002] During the opening process of a folding door panel composed of multiple door panels, since the power mechanism for lifting the door panel is mostly driven by electric power, and the door panel is heavy, there may be situations such as power failure or lifting chain breakage. At this time, the door panel is under the action of its own gravity It will suddenly fall down, causing serious injury to the operators and equipment under the door panel. [0003] Most of the existing anti-fall structures are complicated in mechanism, occupy a large space, and are difficult to install and use in a limited space, and most of them are delayed protection. There is a time difference between the door panel falling and the protection taking effect, and there are certain safety hazards....

AI Technical Summary

Problems solved by technology

[0002] During the opening process of a folding door panel composed of multiple door panels, since the power mechanism for lifting the door panel is mostly driven by electric power, and the door panel is heavy, there may be situations such as power failure or lifting chain breakage. At this time, the door panel is under the action of its own gravity It will suddenly fall down, causing serious injury to the operators and equipment under the door panel

[0003] Most of the existing anti-fall structures are complicated in mechanism, occupy a large space, and are difficult to install and use in a limited space, and most of them are delayed protection. There is a time difference between the door panel falling and the protection taking effect, and there are certain safety hazards. Therefore, The existing anti-fall devices cannot meet the use scenarios where space resources are tight and the requirements for anti-fall are high

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