Fluid coupling type TVVS
The fluid coupling type TVVS is equivalent to the fluid coupling type TVV, enhanced with an annular chamber. When standing still, the fluid levels in the delay chamber, working circuit and the annular chamber are the same. The driven machine starts up extremely gently and the increase in torque is dependent upon the load. The coupling also protects the drive against overload and dampens torsional vibrations. This protects your system and increases its productivity.
The fluid coupling type TVVS is predominantly used in belt conveyor drives.
We offer fluid couplings with water as the operating medium (type TWVVS) especially for potentially explosive atmospheres or with outer casing made of spheroidal cast iron (type TUVVS) for use in operations with relevant material requirements.
Temperature monitoring systems (MTS, BTS, BTM) increase the availability of the drive and boost the productivity of the system.
Voith GmbH & Co. KGaA
74564 Crailsheim, Germany
Sales, Technical Consulting, Quotations
Tel. +49 7951 32-409
Fax +49 7951 32-213
Service, Spare parts, Repair
Tel. +49 7951 32-1020
Fax +49 7951 32-554
24/7 Technical Emergency Helpline
+49 7951 32-1616
Benefits and uses
- Load-free motor run-up
- Gentle start up of the belt conveyor – up to 45s
- Protects the drive in case of an overload
- Dampens torsional vibration in the drive
- Protects system components - the service life of your system increases
- Robust and unsusceptible to environmental influences
- Wear-free power transmission - reduces maintenance and repairs
- Automatic load sharing in multi-motor drives protects your motor against overload
- Sequential startup of the motors reduces the load on the supply circuit
- Automatic adjustment to the load condition of the belt through extended torque build-up
Typical fields of use
- Belt conveyors
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Dimensions in mm
Hydrodynamic couplings transmit mechanical power from the motor to the driven machine via a flow of fluid. This occurs by means of two bladed wheels positioned face to face. The primary wheel (red) is connected with the motor and acts like a rotary pump, the secondary wheel (blue) is connected to the driven machine and acts like a turbine. Power transmission is proportional to the fill level in the working circuit. As a result of the mechanical separation of the drive and driven sides, the hydrodynamic couplings transfer the power wear-free and dampen the torsional vibration and torque shocks in the drive chain at the same time.
Constant-filled couplings are self-contained drive components. The different types of constant-filled couplings are mainly differentiated by the volumetric chambers , where their automatically controlled fill and emptying have a decisive influence upon start-up behavior. The demand of the drive application determines the coupling type and capacity. Constant-filled couplings are mainly used for soft start, torque limitation and dampening the torsional vibration behavior of the drive. .
Voith doesn't just supply couplings, we are also your engineering partner for customer-specific drive solutions:
- Designing of complete drives
- Dimensioning the coupling for the optimal use of your system
- Analysis and optimization of the operating state of drives in existing systems (retrofit)
- We can advise you about the selection of optimal start-up technologies
- Competence in systems for all mining equipment and the bulk material industry