Universal coupling for implementing synchronous movement of special-shaped large-span rolling doors

Abstract

The invention discloses a universal coupling for implementing synchronous movement of special-shaped large-span rolling doors. The universal coupling comprises a first connecting flange, a first flange fork, a second flange fork, a first cross shaft, a transmission shaft, a third flange fork, a fourth flange fork, a second cross shaft, and a second connecting flange. One end of the first connecting flange is connected with a first roll shaft which is connected with a rolling door. The first flange fork is connected with the other end of the first connecting flange. The first flange fork and the second flange fork are alternately arranged and connected through the first cross shaft. One end of the transmission shaft is connected with the second flange fork. The third flange fork is connected with the other end of the transmission shaft (4). The third flange fork and the fourth flange fork are alternately arranged and connected through the second cross shaft. One end of the second connecting flange is connected with a second roll shaft, and the other end of the second connecting flange is connected with the fourth flange fork. The universal coupling has the advantages that construction quantity is reduced, cost is reduced, and synchronism is achieved.

Description

technical field [0001] The invention relates to a shaft coupling, in particular to a universal shaft coupling for realizing synchronous operation of special-shaped large-span rolling doors. Background technique [0002] Around the corridors, halls, and escalator openings of commercial buildings, it is necessary to install folding and lifting fire shutter doors for fire protection. The working principle of the existing folding and lifting fire shutter door is that the fixing frame is fixed to the ceiling with expansion bolts first, and the transmission roller shaft is installed at a certain distance from the ceiling. One end of the wire rope is connected to the transmission roller shaft, and the other end of the wire rope passes through The fixed pulley welded on the fixed frame is connected with the metal pull ring set on the fireproof curtain body; at the same time, there is a bottom support at the bottom of the fire shutter, and the two ends of the bottom support can slide...

AI Technical Summary

Problems solved by technology

[0004] 1. Affect the construction speed and increase the cost

Every 10 meters along the straight line and at every corner, a set of columns need to be set up to fix the guide rail, which not only increases the material cost of the columns, but also cumbersome construction, increases the workload of the construction, delays the construction progress, increases the The construction intensity and labor cost are also greatly increased, which greatly increases the total cost

[0005] 2. Running synchronization is difficult to control

When a fire start signal or stop signal is sent to the motor, due to the large number of motors and the slight difference in the response time of each motor start and stop, it is difficult to control the synchronization of each motor operation, resulting in uneven stretching or folding of roller blinds everywhere. synchronization, it is difficult to meet the requirements of fire testing and acceptance

[0006] 3. The space utilization rate is not high, which affects the appearance

Occupies a lot of space due to the addition of many columns to fix the guide rails

Moreover, for commercial buildings with higher requirements, setting up many columns for fire protection requirements also affects the appearance

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