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MotoSuiveur® motor follower Hoist Safety Device

The revolutionary MotoSuiveur® failsafe brake from Siguren is a permissive safety system, which allows only safe operation of the hoist and protects against any mechanical or electrical hoist failures.

SCX Special Projects is the sole UK licenced supplier of the MotoSuiveur® hoist safety solution, which is increasingly being specified as a standard safety fitment at UK nuclear sites.

Annotated diagram of a MotoSuiveur® unit

Annotated diagram of a MotoSuiveur® unit

 

Safety concerns which arise from traditional hoist safety brakes can all solved via the integration of the MotoSuiveur® motor follower device. The concerns solved by the MotoSuiveur® device are:

  • Load Arrest - Protection against any hoist mechanism failure, excluding the rope
  • Overspeed - Protection, both mechanically and via firmware controls
  • Drop Height - Load is arrested within 30° rotation of the drum
  • Overload Protection - Allows incorporation of a torque limiter
  • Independent Recovery - Optional independent recovery mechanism

 

A MotoSuiveur® unit with a diagram showing load arrest rotation of 30°

A MotoSuiveur® unit with a diagram showing load arrest rotation of 30°

 

The MotoSuiveur® motor follower consists of a worm and wheel gearbox mounted directly to the hoist drum. The worm is a permissive system 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. Dependant on rope and barrel configurations, this could translate to a load drop of as little as just 15mm before arrest.

The incorporation of a MotoSuiveur® motor follower unit means the reliance on the integrity of the motor, gearbox, drum or shaft is reduced, allowing for the incorporation of a torque limiter between the motor and gearbox which provides mechanical protection against any overload. E.g. 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.

MotoSuiveur® unit on a Commercial Off-The-Shelf (COTS) crane

MotoSuiveur® unit on a Commercial Off-The-Shelf (COTS) crane

We actively encourage our clients to see for themselves how the innovative design of the MotoSuiveur® motor follower system has revolutionised the safety of hoist braking.

Get in touch now for more information, or to request a demonstration from our mobile demonstration kit.

MotoSuiveur® mobile demonstration kit

MotoSuiveur® mobile demonstration kit

Enquire about the MotoSuiveur Safety Device

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SCX Special Projects Ltd
Roman Ridge Road,
Sheffield, S9 1GA
Tel: +44 (0)114 243 1142
Email: info@scx.co.uk
An SCX Company