Top 4 Ways To Scrutinize The Cable Trolleys In Your Crane System

Posted by Kunal Sutar on January 27th, 2021

As per various equipment manufacturers, the load-bearing cable trolley is one of the most significant components of a crane system.

Consistent examination to measure the status of cable trolleys offered by these manufacturers and influencing aspects in the workstation’s setting is vital, both so as to augment the functionality of the crane system and make sure an ideal condition ergonomically for operators utilizing supported lifting and manual handling.

The manufacturers recommend the following procedure for checking the grade and performance of cable trolley.

1. Listen and feel
Listen for pale noises, scraping or squealing. Cable trolleys must run noiselessly and their passage must feel uniform and smooth along the complete length of the rail system.

2. Compare theoretical performance with real outcome

Estimate the theoretical preliminary force for the system. Usually for physically moving loads, crane system needs a preliminary force equal to between 1 and 1.5% of the whole mass of the load recalculated to compression and traction, comprising the weight of rail mechanisms, lifting equipment and any device. The moving force needed to keep the load in motion is not more than 1%

When making use of media supply, such as cable trolleys, cable carrier chains or alike, roughly 10-20 N must be added to this hypothetical value.

Project-specific load conditions might distress the starting and moving forces required, for instance where a telescoping crane is mounted with a small reclination so as to robotically go to return mode with the help of self-rolling and the lifting equipment unaffected.

As soon as the theoretical value is derived, the real outcome can assess for comparison and primary diagnosis.

Start by pulling the load at regular handling height by means of a dynamometer to fix the size of the preliminary and moving forces* vital to transport the load. This assessment is generally conducted 5 times at a speed equal to the standard pace of work, with the median value carefully chosen as the outcome.

3. Check the wheel contact surfaces in the profiles
Check the profile surfaces on which the cable trolley runs and clean if needed. The surface must be clean and dry. Sooner or far ahead, dirty and oily running surfaces would at all times have a bad impact of the crane system’s performance. Utilize a fresh, dry piece of cloth.

Though grease or oil may momentarily loosen the cable trolley in a thronged section where outside effects have triggered the worsening of a profile, this is just hiding the problem and will lead to occasional amplified rolling resistance by enticing dirt and debris to the runners and cable trolley wheels. Grease and oil put on profiles will also drop on top of workers and products.

4. Inspect the wheels
Dismantle the cable trolley from the profile for examination after receiving from manufacturer. Search for damage, debris or wear to comportments. If any of these are seeming, the cable trolley will require to be swapped. The wheel must not wobble by more than 0.1 mm. It must rotate freely and consistently with no problem.

Even though inspecting the status of cable trolleys offered by manufacturers is a significant part of strategic maintenance for a light crane system, it is not adequate in itself. How nicely a system functions is also influenced by factors such as the precision of installation, the condition of tracks, profiles and joints, the grade of accessories and extra components, and so on.