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Up-and-over garage door - has electric motor drive with chain to raise pivoted arms, and door counterbalanced by spring strut
Up-and-over garage door - has electric motor drive with chain to raise pivoted arms, and door counterbalanced by spring strut
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机译:上翻式车库门-带有链条的电动马达驱动以升高枢转臂,并通过弹簧支柱平衡门
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摘要
The lower edge of the door leaf is located by rollers running in vertical guides secured to the door frame. An electric motor (15) with a reduction gear, drives a transverse shaft with a sprocket (19) at each end. The chain (21) driven by thesprocket (19) passes over three further wheels (23, 25, 26) with fixed mountings. The chain actuates the arm (33) which has a fixed pivot (27) at the end and is pivoted on the door plate at the other (13). The door is counterbalanced by a spring strut (9) and in its open position is supported in a ceiling mounted guide (35).
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