Elevator Pulleys

General

Elevator pulleys also called drum pulley, bucket pulley, bucket elevator drum pulley. From the installation postion in the bucket elevator, it has two types. One is bucket elevator head pulley, another is bucket elevator tail pulley.

Construction of pulleys elevator drum

The bucket elevator head pulley is located at the top of the bucket elevator. The tail pulley drum installed at the bottom of the bucket elevator. Their composition and structure are similar, they are generally the same. Both of head and bottom drum is composed of roller and shafts.

The elevator belt (rubber elevator belt or PVC elevator belt) is running around the head drum pulley and the tail drum pulley. The elevator bucket installed on the elevator belt by elevator bolt (common elevator bolt or fang elevator bolt) , the bucket lifts with the materials(like grain, bean, coffee etc) and get the matrials moving and transportation.

Type of the elevator pulleys

Commonly we produce three kinds of the elevator pulleys:

Inner cone type:

This is mostly used abroad (outside of China), the production cost will be more higher than the common plate type. The inner cone shape is a good design which is easily let the materials running, decreasing the material stacking rate inside the drum pulley.

Plate type

This type of elevator pulley is make by the plate sheet. Cut and roll, installed the bearing and shaft. For the head pulley drum, it coated with the rubber layer.

There is two kinds of rubber layer, one is the whole rubber layer type. Another is the lagging materials changable type.

We recommend the lagging materials changable type. It is easy for the maintenance. When one surface segment is broken, You don’t need to discard the whole head drum. All you have to do is replace the damaged part of the surface lagging materials.

Rate-cage type

This type is mainly used for bucket elevator tail pulley. Please look at the white part below. We called it Rat-cage type. You can also see from the picture. The tail pulley drum in this form are not easy to pile up materials. Because the bucket elevator needs to lift different materials. Materials must not contaminate each other.

On the left of the white tail pulley of the bucket elevator in the below photos is the second pulley type talked in above: Full-coated rubber layer plate type elevator pulley.

Differences between head pulley and tail pulley

The head elevator pulleys are the driven drum. It can’t skid by contacted with the belt. So the head elevator pulley drum should be covered with rubber layer.

And it is usually easy to wear. We have now designed this lagging materials pattern. By sectional insert the segment. If one or more pieces(segment) are broken we can replace them. There is no need to change the whole head elevator pulleys. Cause economic loss and also waste of time.

The tail pulley drum is no motivation. It is worked by the force of the head pulley. Carry out the bucket elevator material elevating and conveying.

The bucket elevator tail pulley is no need the rubber coated suface.

But the tail pulley contact the materials, so the most important it can’t pile up the materials. So we design the first pulley type-Cone type, and the third type – Rat cage type.