Double-duty shock
This small shock absorber cushions moving parts and provides an end-stop in motion control equipment such as that used in the packaging and materials handling industries. It also supplies a digital output to signal the end of movement, just like a limit switch.
|
When the moving part contacts the piston rod, piston and magnet are pushed up the cylinder.
|
When the magnet comes within 1.4 - 2.2 mm of the sensor, current density in the sensor changes and the sensor circuit produces a switching signal that can be evaluated by the machine controller. As an optional extra, the circuit can also output an analog signal to monitor the operating status of the shock absorber. This monitoring signal reduces voltage when the piston moves too fast as a result of oil leakage or overload conditions.
Norm Macenzie, Enidine Inc. , 7 Center Dr., Orchard park, NY 14127; Tel: (716) 662-1900.
Double-duty brake
The Electro Released Bifunctional brake combines two braking systems into one:
|
Bifunctional brake doubles as a foot brake and as a hand brake.
|
Parking.
With no electric power to the brake (vehicle ignition off), springs force armature 1 against armatures 2 and 3, clamping the brake's friction material.
Standard braking. With ignition on (electric power), the magnet attracts armature 1. Armature 2, constructed from a non-magnetic material, isolates armature 3. Consequently, armature 3 is free to move against the friction material when actuated by the brake pedal.
In emergencies, a potentiometer senses excess pressure on the brake pedal. This signal may be used to cut power to the brake coil, thereby adding spring force to hydraulic pressure for maximum braking effect.
Warner Electric; Tel: (815) 389-3771; Fax: (815) 389-2582; www.warnerelectric.com .
Tweet This
7 
