Safe brake for rolling door

Abstract

The invention provides a safe brake for a rolling door. The safe brake comprises an end cover, a wheel disc, and a ratchet wheel and a pawl which are matched with each other, wherein the periphery of the ratchet wheel is fixedly connected with the periphery of the end cover; the end cover is fixed at the tail end of a rolling drum rotary shaft of the rolling door through a bearing; the wheel discis fixed in a round groove of the end cover; and the pawl is arranged in the middle of the ratchet wheel, is matched with the ratchet wheel and is fixed on the wheel disc. The safe brake is arranged at either end or two ends of the rolling drum rotary shaft of the rolling door. The number and installing positions of the safe brake can be adjusted according to the actual requirements of a rolling door structure. The safe brake for the rolling door has the advantages of simple structure, simple action principle, reliable brake effect, capability of effectively avoid accidents, convenient use, and capability of being applied to rolling door mechanisms with different sizes in different occasions; and the size and number of the safe brake can be selected and the installation position of the safe brake can be set according to the actual size and actual requirements of the rolling door.

Description

technical field [0001] The invention relates to a safety brake technology of a door mechanism, in particular to a safety brake for rolling doors which can be applied to industrial doors, garage doors and the like. Background technique [0002] In order to facilitate opening and closing and save space, relatively large doors such as industrial doors or garage doors generally adopt a rolling door structure. malfunction. In response to this problem, there are currently safety brake devices installed on the rolling door machine to prevent the rolling door from falling too fast, but these safety brake devices generally use a free-fall centrifugal mechanism, because the structure of the free-fall centrifugal mechanism is relatively complicated and the manufacturing accuracy is required. Higher, so its manufacturing cost is also very high, accounting for about 50% of the cost of the door operator; in addition, because the volume and model of the rolling door used in different occa...

AI Technical Summary

Problems solved by technology

[0002] In order to facilitate opening and closing and save space, relatively large doors such as industrial doors or garage doors generally adopt a rolling door structure. Does not work properly

In response to this problem, there are currently safety brake devices installed on the rolling door machine to prevent the rolling door from falling too fast, but these safety brake devices generally use a free-fall centrifugal mechanism, because the structure of the free-fall centrifugal mechanism is relatively complicated and the manufacturing accuracy is required. Higher, so its manufacturing cost is also very high, accounting for about 50% of the cost of the door operator; in addition, because the volume and model of the rolling door used in different occasions are different, the model of the door operator on the rolling door must also be different , which requires that the safety brake device must be specially designed according to the model of the door operator, and its application range is limited, and the manufacturing cost and inventory cost of the enterprise are extremely high.

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