(1). The torque of hoist motor shall not be lower than 180% of the rated torque.
(2). It shall have good rope-threading performance and shall not jam or block the rope.
(3). All rotating exposed parts shall be equipped with hood or protective device.
(4). the brake must stop construction gondola lift with 125% rated load within a slip distance of no more than 100mm.
(5). Clutch and friction drive are prohibited
(6). The ratio of rope wheel diameter to rope diameter should not be less than 20.
(7). Under static test load ( 150% rated load), the brake acts for 15min and the slip distance is no more than 10mm.
(8). It must be equipped with a manual sliding device to make the suspension platform descend smoothly when the power is off.
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