Solution

Dynamically balanced manipulators for handling radioactive materials. EMA linear actuators are used to move the slave arm relative to the master arm in a tilt and skew motion. The actuators are an integral part of the mechanism and act as load bearing struts, carrying the full reactive loads. The models used are the 5kN and 2.5kN continuous (model C) with 24VDC motors.

Products Used

• EMA - Electric Linear Actuator

Solution

Container handling system for British Nuclear Fuels Ltd.

4 off A075 Rolaram linear actuators operate a scissor lift mechanism, which raises and lowers containers as part of the encapsulation process.

Products Used

• Rolaram - Electric Linear Actuator

Solution

Developed by BNS Nuclear Services with whom Power Jacks worked in close partnership to design and manufacture the main linear actuation unit engaging the machine with the reactor standpipe. Four additional screw jacks act as stabilisers when the machine is coupled to the standpipe.

The linear actuator is designed to lift and lower the 20kN load over a stroke of 525mm with the end of travel signalled by proximity sensors installed in the actuator. To maintain a rigid column over the stroke the actuator has two internal guidance mechanisms for the ram. As a safety feature the ram is fitted with a proprietary clutch to act, as a mechanical fail safe, to prevent an overload condition should external control systems fail. Powering the actuator is a 0.75kW motor with integral brake.

Products Used

• Screw Jacks - E-Series Machine Screw
• EMA - Electric Linear Actuator (custom design)
• System Components - Hand Wheel