Drive Couplings

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Conveyor Belt Installations and Related Components

DRIVES COUPLINGS.

On both horizontal and incline belt conveyors we make use of electric motors as a power

source. The power from the motor is transmitted to the drive pulley by means of torque

arm speed reducers or reduction gearboxes with suitable gear ratios. The motor and

drive pulley can be coupled to the gearbox by means of various types of couplings,

namely

(1) Pin couplings.

Cone-ring flexible type

Cone-ring flexible couplings

Heavy and Medium duty

(2) Tyre couplings.

(3) Disc/Grid couplings.

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(4) Fluid drive couplings.

Fluid coupling without delay chamber Fluid coupling with delay chamber

Torque arm speed reducers are also gearboxes with the exception that the torque arm

reducer is directly fitted to the drive pulley shaft and is anchored by means of

turn-buckles to the installation structure. The torque arm speed reducer is driven by

V-belts from the motor and also has the advantage of V-pulleys that can be changed to

alter the speed without interfering with the gear ratios.

Conveyors running at an incline require more power than those running horizontally. It is

for this reason that the horizontal conveyors are normally driven by a single head drive

pulley and the incline conveyor by a more complex. tandem drive, which is normally

situated at a point along the length of the belt as established in the design.

Tandem drives mean that two drive pulleys are used on the same belt. either driven by

two separate identical drive units, Figure 3, or by one drive unit through tandem gears

on the drive pulleys as shown in Figure 4.

Tabulated below are a few standard conveyor drive layout options:

Right Angled Drive Layouts

Parallel


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Multi- Drive Layouts

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Drive Couplings

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