Many serious workplace accidents occur due to the manipulation of locks on safety doors in the machine guards that surround machinery. People working on and around machinery find clever ways of disengaging the locking mechanisms. They do this simply to make things easier for themselves while carrying out their work tasks without really seeing the risks it entails. At Axelent we have been working on lock solutions for preventing this in accordance with standard ISO14119.
Interlocking (door breaker)
A door breaker tells the machine if the safety door is open. This means that the door is monitored by the machine's system and sends a signal to the machine telling it whether it can run or not. The machine will only run if the door is firmly shut.
Guardlocking (door lock)
A door lock works in much the same way, by sending a signal, the difference being that the door is locked by a special key or locking device and cannot be opened until the machine is in safe mode.
A popular way of manipulating a lock is to unscrew and remove one of the parts of the breaker or lock. We have stopped this by using one-way screws. As the name implies, these screws can be screwed in but not unscrewed.
Ways of making safety doors quicker and easier to enter. Some locks can be manipulated to allow doors to remain open the whole time.
A handle on the inside of the safety door in the machine guards. If somebody gets stuck inside they can get out by pulling the emergency handle.
A lock that is used at emergency exits and escape routes. Doors fitted with this lock can always be opened from the inside, even when locked with a key.
Our X-Locks are equipped with a mechanical splint that requires handling to open and close the door from the outside.
Interlocking safety switch
A signal is emitted when the lock is properly locked.
A simple type of lock that locks the door as it shuts.
Works together with a touch-free door release and functions in a similar way to our X-Lock.
Machinery/installation designers have to take into account the intended application and a risk assessment in order to achieve the required level of safety.
They are straight, winding, long, short and are found in a variety of industries. One thing they all have in common is that they help to shift things from A to B. We are talking of course about conveyor belts. Another thing they have in common is Axelent, the company that supplies machine guards and smart cable routing products.
Nexans produce cabel systems for energy and communication. In their production facilities they use Axelent products for safety. »
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