What is the function of the eccentric wheel in the elevator hall door?

The eccentric wheel of elevator hall door is used to adjust the gap with the door guide rail. Adjust the door wheel and the main and auxiliary door locks: the distance between the unhooking roller of the hall door lock and the blade of the door knife is 6-8 mm, especially for the synchronous door knife. It should be noted that the door cannot be closed due to the large gap. For gantry cranes, the door knife should be placed between the two wheels.

Extended data:

Keep the outer handle and lifting arm in the above positions, and put the inner handle in the "quick response" position. Turn the eccentric wheel to make it closely contact with the outer fork, and tighten the nut with a torque of 0.7 ~ 0.8 kg-m. ..

At this time, care should be taken to prevent the eccentric wheel from rotating. Then move the inner handle from the "quick response" position to the "slow response" position. At this point, the outer fork rod starts to move backwards from the front of the trough bottom, and when the inner handle is pulled to the lowest position, it should be moved by a distance of 4 ~ 6 mm, indicating that the adjustment is correct.

If the adjustment is inconsistent with the above situation, it is necessary to re-check whether the contact position between each fork piece and the roller is correct, whether it is stuck, whether the action is flexible, and whether each bar has resistance, and then make a new adjustment.

At the same time, it should be noted that when reassembling the hydraulic lifting cover assembly, it is necessary to check whether the gasket of the lifting cover is in good condition. Put the internal and external shift fork lever in front of the control valve swing lever, then tighten the screws of the hydraulic lifting cover and the oil pipe gland with 6-7 kg-m torque, and finally replace with new gear oil.

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