How can the manhole door of a rotary kiln be opened easily when its rotation has stopped?
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As shown in the figure, during operation the manhole seat of the rotary kiln rotates together with the kiln body. A vertical lifting rod is used for the manhole; the arm holder of the manhole is fixed to the frame, and the arm does not rotate along with the kiln body. During shutdown, the arm can be connected to the manhole door to open it. There are several issues to consider: 1. It is not possible for the manhole door to stop in the perfect position during shutdown; therefore, the lifting point is placed near the center of the manhole door. During shutdown, the arm rotates around this lifting point to open the door. However, with just one lifting point, the manhole door will rotate after it opens, resulting in the bolt holes for closing the door no longer aligning properly. Using two lifting points does not guarantee that they will be in the exact center, and in such cases the manhole door and its seat may not be concentric, making it difficult to close the door. 2. After the kiln stops, open the door; let the kiln rotate for a while longer, then stop it and close the door. How to ensure that the bolt holes align easily when closing the door. Please engage in active discussions
There are several pull rings on the blind plate surface, and two rotatable and telescopic pull rods are provided. It is possible to adjust the alignment, or use a steel cable with a flexible connection to align it by hand; inserting a few screws will stabilize it
Isn’t there a supplementary transmission? The speed should be fine, right?
A central shaft is welded at the center of the manhole cover; a support is raised and a G-shaped lifting device is used to lift the central shaft. To prevent the cover from rotating, a clamp can be attached to the lifting device.
Personally, I think Method 1 works: weld an internal hex bolt at the center of the manhole cover, use a slingshot to suspend it at the hole on the right side of the cantilever, and add another steel rope slingshot to lift the manhole cover handle on the left side; inserting a tension adjustment clip at the break in the slingshots will solve the problem
The suspension rod remains fixed, and a shaft is provided on the cover to connect to the fixed suspension rod.
Along the circumference of the manhole cover, install lifting lugs at the midpoint of every two bolt holes.