Side Pull, also commonly known as Side Loading, has plagued many owners and users of wire rope hoists.
The OSHA definition of a side pull is when a portion of the hoist pull acting horizontally when the hoist lines are not operated vertically. The dangers of side pull include damage to the wire rope, drum, and rope guide. Side pulling can also result in a very unsafe condition for the operator and nearby personnel.
It is a common misconception that side pull detection can only be installed on a single reeved hoist. This is not true. Laser View Technologies Crane Sentry® Side Pull can be installed on either Single Reeved or Double Reeved hoists.
The difference between using a single or double reeved hoist is dependent on if the hoist has a single drum or pair of drums. Heavier duty hoists that provide “true vertical lift” are typically dual reeved.
The Hoist Side Pull needs to be mounted differently depending on the type of hoist being used. Below are examples of how side pull can be detected when lifting on a single or double reeved hoist:
For this application, the Side Pull mounts to dead end of wire rope
There is more than one method for detecting side pulling on a double reeved hoist:
1. Equalizer Sheave
In this application, the Side Pull mounts to one leg of the equalizer sheave.
2. Equalizer Bar
In this application, 2 ropes dead-end into the equalizer bar. Mount side pull to one of these dead ends.
Installation of Crane Sentry® Hoist Side Pull is simple; it is clamped to the wire rope and the controller is mounted to the trolley hoist body.