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 as well as makes this possible to begin with. Conveyor technology or crane systems are further examples of the usage of chain hoists.
Like all hoists, chain hoists are at the mercy of recurrent testing in accordance with the task equipment directive (2009/104/EG) of the EU. If the overload protection is also mechanical and designed by means of a friction clutch, only the FRKPS from WIKA can be viewed as for the test. In the abbreviation FRKPS the ?F? means ?Force? which identifies these devices 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 guarantee the safety of individuals and machines. Additionally it is important to ensure that the reliability of the application is definitely guaranteed. Minimal downtimes and zero-maintenance and service outlay are the goal. The DGUV (German social accident insurance) also stipulates that all 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 manufactured from section steel.
Principle of operation of a chain hoist test set
The FRKPS consists of a force transducer, a display unit and the guide sleeves suitable for the respective chain thickness. As a way to check the release force of the friction clutch, the force transducer is hooked into the chain alongside the appropriate adapter sleeve. Then they move upwards together contrary to the bottom of the chain hoist and block the chain. The force transducer measures the maximum force until the friction clutch is activated and transmits this value to the display unit. The user 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. In order to be able to use the FRKPS in rough environmental conditions without the problems, the force transducer meets the high ingress protection of IP67. The best 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 also be easily operated with gloves because of large buttons. The entire system consisting of 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 on this topic can be found in the flyer ? Dynamic set for checking friction clutches on chain hoists?. Details of our model FRKPS chain hoist test set are available on the WIKA website.