Torsion spring of equal-pitch cone, industrial door balance mechanism and industrial lifting door

Abstract

The invention provides a torsion spring of an equal-pitch cone, an industrial door balance mechanism and an industrial lifting door. A torsion spring body is in an equal-pitch conic shape, and the two ends of the torsion spring body are a pre-tightening end and a fixed end correspondingly; the torsion spring and a flat cone pulley are arranged on a transmission shaft and are coaxial with the transmission shaft, and a steel wire rope wound on the flat cone pulley is connected with a door plate; the fixed end of the torsion spring is fixed to a base, and the pre-tightening end of the torsion spring is provided with pre-tightening torsion force; and when the torsion is balanced with the gravity of the door plate, the transmission shaft drives the flat cone pulley to rotate to lift the door plate. The pre-tightening torsion of the torsion spring of the equal-pitch cone is kept consistent with the door weight, so that the automatic balance of the drawing force and the door weight can be realized when the lifting door ascends and descends.

Description

technical field [0001] The invention relates to an industrial lifting door, in particular to a conical torsion spring with equal pitch, an industrial door balance mechanism and an industrial lifting door. Background technique [0002] With the rapid development of logistics, more and more industrial lifting doors are used in warehouses. At present, the balance system of industrial lifting doors on the market mainly relies on the cooperation between the conical tower wheel and the cylindrical torsion spring: when the lifting door is closed, the cylindrical torsion spring maintains the maximum preload (torsion force); The torque gradually decreases. Since the weight of the lifted door remains unchanged, in order to make the torque of the torsion spring close to the weight of the door, a tapered tower pulley with a gradually smaller diameter is used. , requiring different numbers of cylindrical torsion springs and different shapes of conical cone pulleys. [0003] The above s...

AI Technical Summary

Problems solved by technology

However, the size of each industrial lifting door is different, so the number of torsion springs is different, and the corresponding taper of the tower wheel is also different, which will cause complex calculations, high costs, and inconvenient maintenance during use.

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