Tirfir Coilomatic Essay Example

for lifting and pulling tasks as long as they do not exceed the rated capacities. The diagrams below depict different applications of Tirfors. When using the operating handle on L1, a lever action is utilized to move the cable through the 45mm machine. The machines do not have ratchets, so the operating handle does not need to be used through its full stroke. In cramped spaces, short strokes can be performed. The handle can be placed in any position during its stroke.

When using the Tirfor machine, if one person finds the operation too challenging, they should stop the work. Then, reeve the hauling cable through a snatch block to allow pulling on two parts of the cable. If the task is still too hard, add more blocks. It is crucial to never substitute the telescopic operating handle with any other object. In case the shear pin breaks, refer to the 'Overloads' section.

(See over for diagram) Place the operating handle on the reverse operating lever (L2) and twist to lock into position. To slacken the wire cable or lower the load, move the operating handle back and forth.

The cable moves through the machine in both forward and backward strokes of the lever. One person can lift the indicated safe working load with normal effort. If more effort than normal is needed, the shear pin in the forward operating handle stub may shear and prevent further forward or upward movement. However, reverse action is still possible by using L2 to slacken or lower the load. To fix this issue, remove the damaged shear pin from the operating handle and replace it with a new one.

Spare pins can be found in the cable release lever. It is important to avoid using non-standard shear pins as they can cause damage to the machine. Remember to order replacement pins and keep them in the cable release lever.

To ensure that all the cable gripping mechanisms are in proper working order, it is important to perform lubrication as per Standard Test Records 15. For this, place the reversing lever L2 midway in the slot and apply oil in front and behind the lever. This will ensure that both jaws receive adequate lubrication. Failure to lubricate a Tirfor properly can lead to a condition known as 'pumping'.

This problem arises when one jaw of the machine's grip becomes stuck on the cable, preventing the other jaw from taking on the load. When the operating handle is pulled down, the machine climbs 25mm up the cable. However, when the handle is moved up again, the machine moves down the same 25mm due to the jaw being locked onto the cable. Another sign of inadequate lubrication is a jerky motion when lowering the load. It is crucial not to exceed the machine's maximum working load and to only use it for its intended applications. Trying to operate the cable release mechanism while the machine is under load should never be attempted. Additionally, one should never obstruct the operating levers or the cable release lever, nor operate the forward and reverse levers simultaneously.