Chain hoists are employed for lifting and lowering freely moving loads. As a lifting device, the chain hoist supports, for instance, ergonomic lifting during assembly work and even makes this possible in the first place. Conveyor technology or crane systems are further examples of the utilization of chain hoists.
Like all hoists, chain hoists are subject to recurrent testing relative to the task equipment directive (2009/104/EG) of the EU. If the overload protection is also mechanical and designed in the form of a friction clutch, only the FRKPS from WIKA can be viewed as for the test. In the abbreviation FRKPS the ?F? stands for ?Force? which identifies the device as a force transducer. The ?RKPS?, which follows, abbreviates the German ?Rutschkupplungspr�fset? (friction clutch test set).
Chain hoist test set, also for section steel chains
The friction clutch on chain hoists should be checked regularly to ensure the safety of people and machines. Additionally it is important to ensure that the reliability of the application form is definitely guaranteed. Minimal downtimes and zero-maintenance and service outlay are the goal. The DGUV (German social accident insurance) also stipulates that lifting equipment should be checked regularly. However, users can save themselves the awkward handling of weights utilizing the FRKPS chain hoist test set. That is also ideal for chain hoists with chain links made of section steel.
Principle of operation of a chain hoist test set
The FRKPS includes a force transducer, a display unit and the guide sleeves suitable for the respective chain thickness. To be able to check the release force of the friction clutch, the force transducer is hooked into the chain together with the appropriate adapter sleeve. Then they move upwards together contrary to the bottom of the chain hoist and block the chain. Dejected measures the utmost force before friction clutch is activated and transmits this value to the display unit. An individual can read it off easily there. Around 99 data sets can be saved. This eliminates the major effort required when working with test weights.
Scope of performance of the chain hoist test set
The force transducer covers a measuring range between 40 kg to 3,500 kg. To become able to use the FRKPS in rough environmental conditions without the problems, the force transducer meets the high ingress protection of IP67. The greatest possible insensitivity of the force transducer to parasitic forces and moments is ensured by the design as a shear beam load cell. The display unit can be easily operated with gloves due to large buttons. The complete system comprising force transducer, two adapter sleeves for section steel chains and display unit is delivered in a practical and sturdy case. The FRKPS chain hoist test set combines simple operation with robustness for friction clutches on chain hoists.
Note
Further information with this topic are available in the flyer ?Test set for checking friction clutches on chain hoists?. Details of our model FRKPS chain hoist test set can be found on the WIKA website.