Hydraulic analysis of a reversible fluid coupling charles n. Its main components are two bladed wheels a pump wheel and a turbine wheel as well as an outer shell. At the same time, fluid couplings limit torque, provide load. Features of voith hirth serrationsadvantages angular surfaces provide positive locking transmission of most of the peripheral force high torque capacity the bolts only have to absorb a small axial force high loadbearing percentage on tooth flanks high wear resistance indexing accuracy. Water used as operating fluid for turbo couplings with. Voith hirth couplings, standard and custommade toothed. Helical gear box, helical gear reducer, helical reduction gearbox duration. The fluid coupling is normally mounted on the machine shaft or gearbox shaft to be driven outer. Since 1968, he has as sumed several international assignments for voith in france, spain, and the. The flatface design of series x65 couplings minimizes spillage during connection and disconnection. In this way, they increase the productivity of the vehicle or system. Depending on the coupling size, there are three different removal devices. They protect the driveline and thus extend the lifetime and availability of all connected drive components. Construction, working, operation and maintenance of fluid couplings.
Variable speed fluid couplings driving centrifugal compressors and other centrifugal machinery by gunther h. Mckinnon1 boeing north american, downey, ca danamichele brennen1 mcgettigan partners, philadelphia, pa christopher e. Voith fluid couplings working principle en youtube. As shown in above figure, power can be also transmitted from a motor a driver to a driven machine without direct operating principle using a pump, a turbine and associated piping. And the smooth, flat surfaces of the coupling are easily wiped clean, further reducing spillage. It has been used in automobile transmissions as an alternative to a mechanical clutch. More than 45 years of experience in perfecting drive systems that are subject to.
The coupling also protects the drive against overload and dampens torsional vibration, protecting your system and increasing its productivity. Design and mathematical modeling of fluid coupling for. The wearfree power transmission of voith fluid couplings is explained in this simple demonstration. Brennen california institute of technology, pasadena, ca abstract this paper presents a hydraulic analysis of a. Furthermore, spheroidal cast iron outer casings type tuvf are available and meet the required material specifications.
The hydrodynamic working principle of torque transmission through. Construction, working, operation and maintenance of fluid. Additionally, voith offers fluid couplings with water as the operating medium type twvf. Voith fluid couplings proven a million times 12 3 1 bucket wheel excavator in openpit lignite mine, czech republic 2 belt conveyor and stacker reclaimer in coal. A fluid coupling or hydraulic coupling is a hydrodynamic or hydrokinetic device used to transmit rotating mechanical power. Voith turbo, the specialist for hydrodynamic drive, coupling and braking systems for road, rail and industrial applications, as well as for ship propulsion systems, is a group division of voith ag. Coupleur hydraulique voith pdf the voith turbo coupling is a hydro dynamic coupling based on. Voith offers fluid couplings and solutions for highly efficient and reliable drive solutions for the mining industry and the handling of raw materials. Agnee gear motors, gear boxes and 3d printers 143,768 views. Using the hydrodynamic power transmission principle, a fluid flow transmits the power from the pump wheel. Voith is one of the largest familyowned companies in europe with a workforce of around 39,000, eur 5. Peikert regional manager voith transmissions, incorporated houston, texas gunther h. Currently this only includes software updates for the diwagnosis program, online service manuals for diwa transmissions, voith pump distributor information, manuals for certain voith marine products, and diwa and voith rail bulletin and service information that you can download or read online. The fluid coupling has an advantage over the mechanical coupling in the following areas.
The voith turbo fluid coupling type t basic design, shown in above figure. It also has widespread application in marine and industrial machine drives, where variable speed operation and controlled startup without shock loading of the power transmission. Highly flexible couplings from voith are specially developed for these requirements. Turbo coupling type t and dt turbo coupling type t is the basic ver sion of constantfill couplings, con sist ing of pump wheel, turbine wheel and outer shell. Hydrodynamic softstart couplings voith turbo, a group division of voith gmbh, is a specialist for. In drives consisting fluid couplings, there is no mechanical contact between the driver and the driven machine and power is transmitted by means of a fluid. Voith turbo, the specialist for hydrodynamic drive, coupling and braking systems for road, rail and industrial applications, as well as for ship propulsion systems, is a group division of voith gmbh. Connecting coupling on the input side outer wheel drive. The fluid coupling allows the motor to reach 8085% speed in a few seconds shift from point a to point b where it meets the stall curve of the fluid coupling slip100%, the point of maximum motor torque. It is used as an alternative for the mechanical clutch. This is critical when operations are located in potentially explosive atmospheres. The voith turbo fluid coupling type t basic design, shown in above figure, consists of a.
The hydrodynamic principle of a fluid coupling makes it easy to gently accelerate driven machines. Turbo coupling with constant fill connecting coupling type gpk. Service for fluid couplings hydraulic couplings voith. Variable speed drives fitted with a voith geared variable speed coupling are compact, efficient and offer unbeatable reliability. Fluid drives gyrol, voith, nelson fluid drives explore our costeffective solutions for gyrol, voith, nelson and bolier feed pump fluid drives and heat exchanger tube bundles. Operating principle standstill startup nominal operation there is oil orange in the working and delay chamber of the. The hydraulic removal device is designed to pull off tcouplings from the gear box shaft with a high force and a low screw torque at the same time. Its main com ponents are two bladed wheels a pump wheel and a. The voith turbo coupling is a hydro dynamic coupling based on.
So the maximal pulloff measurement varies up to 80t. A further range has been created by the addition of other parts to this basic type. Fluid couplings or hydraulic couplings work on the hydrodynamic principle. It is used in automotive transmission system, marine propulsion system and in industries for power transmission. This fluid coupling would capture the mechanical power from the main source, namely the i. Point c is the point of functioning of the fluid coupling after the motor has reached operating speed. The voith fluid coupling is a hydrodynamic coupling based on foettingers principle. The voith turbo coupling is a hydrodynamic coupling based on foettingers principle. Startup with increasing speed, the operating fluid in the working circuit is accelerated via the pump wheel.
149 177 1235 1401 674 129 273 381 733 937 1269 1225 797 1307 10 1015 739 1095 293 1101 338 888 592 438 759 1485 1366 475 592 657 1441 1107