As part of a new lifting solution, or retrofitted to existing equipment, the MotoSuiveur load arrest device from SIGUREN technologies provides unparalleled protection against multiple causes of dropped loads.
MotoSuiveur is not a hoist brake, it's something revolutionary and innovative. It transforms your approach to crane safety.
MotoSuiveur protects against uncontrolled loads caused by hoist brake, gearbox, motor or control system failures, including overspeed and overhoist scenarios.
The MotoSuiveur load arrester meets the recommendations of the Office for Nuclear Regulation's ONR Technical Assessment Guide 56 (TAG 56) for Nuclear Lifting Operations in addressing a range of lifting challenges.
Download our mini brochure, find technical information in our MotoSuiveur catalogue, or read on for more details.
In the case of uncontrolled loads, safety concerns which arise from traditional hoist safety brakes can all be solved via the integration of the MotoSuiveur load arrest device. The concerns solved by the MotoSuiveur unit include:
A MotoSuiveur can replace multiple safety systems to deliver permissive safety in a single independent device, reducing complexity, implementation time and cost. And, because it isn't a friction-based calliper brake, its response times are significantly faster.
As the exclusive supplier of the MotoSuiveur device, SCX Special Projects has not only installed them on numerous nuclear licenced sites, but also for aerospace and defence applications too.
The MotoSuiveur load arrest consists of a worm and wheel gearbox mounted directly to the hoist drum. The worm is a permissive system that only operates if fully functional and healthy, and which allows the wheel and barrel to rotate at any speed within the hoist’s normal operating parameters.
Any large differential acceleration between the worm and wheel will cause the system to mechanically lock, safely arresting the load. This provides mechanical failsafe protection in the event of any electrical or mechanical failure.
Should an arrest situation occur, hydraulic damping of the worm absorbs any impact force, bringing the load to a safe stop within 30° rotation of the drum. Dependent on rope and barrel configurations, this could translate to a load drop of as little as just 30mm before arrest. Compare this to traditional hoist safety brakes and the difference can be substantial.
The incorporation of a MotoSuiveur load arrest device means the reliance on the integrity of the motor, gearbox, drum or shaft is reduced. This allows for the incorporation of a torque limiter between the motor and gearbox which provides mechanical protection against any overload, such as in the event of a snagged load or double blocking.
When an arrested load is being held by the worm and wheel, an optional integrated independent recovery motor can drive the worm to remotely recover the arrested load.
We actively encourage people to see for themselves how the innovative design of the MotoSuiveur load arrest device has revolutionised hoist safety. Please use the contact form below to request a demonstration.
MotoSuiveur® mobile demonstration kit
An SCX company
SCX Special Projects Ltd
Roman Ridge Road, Sheffield, S9 1GA, United Kingdom
t: +44 (0)114 262 6199
e: info@scx.co.uk