Fluid coupling takes control of belt drives
A
Voith Turbo product story
Edited by the Engineeringtalk editorial team
Mar 29, 2004
The TPKL fill-controlled fluid coupling helps create a compact and actively controlled drive, especially for belt conveyors.
The TPKL fill-controlled fluid coupling helps create a compact and actively controlled drive, especially for belt conveyors.
Since its introduction, more than 150 drives have been successfully installed - primarily in the USA and Australia, but also in China, Korea, France and Indonesia.
The development of the fill-controlled TPKL coupling combines years of experience gained by Voith Turbo from hundreds of complex belt conveyor drives with the continuously growing demands made by the market to modern drive systems.
The TPKL coupling concept is predestined for the control of highly complex drive systems, for example belt conveyors with several tripper drive stations and axle distances of over 10km.
In practical service, the coupling has proven itself as a very reliable, low-maintenance drive component with an availability rating of over 98%.
A typical characteristic of fill-controlled Voith turbo couplings is that the volume of the operating medium in the coupling can be steplessly changed by controlling the fluid circuit.
Therefore, the transmitted torque and also the speed of the driven machine can be varied.
In conveyor applications, the Voith Turbo TPKL concept primarily performs: startup control; time ramping; belt control; creep speed control (approximately 15%); natural and controlled load sharing; frequent startups under load; and speed recognition of driving drum, protection against drum slip.
During the development of the new TPKL coupling, special attention was paid to high thermal capacities, combined with compact design.
The omission of movable parts contributes to the robustness of the coupling.
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