rail transport l transmission
Special rail vehicles
With the arrival of Gmeinder in the Wikov
Group, the position in the field of drives
for special rail vehicles is also fundamentally changing. It was this extensive experience with special gearboxes for rail vehicles that contributed to the decision for
the takeover of the German competitor.
So far, this segment has been missing
in Wikov's portfolio, or it has not been focussed on. The mosaic of products has
therefore received gearboxes and drives
for railway motor cars, railway cranes, maintenance of traction lines, tamping machines, and machines for the laying,
installation, maintenance, and renewal
Wikov is also opening its door to the
market of the diesel train unit (DMU),
where Gmeinder is an established supplier of complete drive solutions up to a speed of 200 km/h. In the past, for example,
they have supplied bevel gearboxes for
the IC3 unit of Danish railways.
Locomotive gearboxes are also the domain of mainly Gmeinder. These generally
include shunting and freight locomotives
in the whole range of designs from diesel,
through diesel-electric, to solutions with
paw motors used in electric locomotives.
Wikov complements its portfolio with powerful gearboxes for sprung drives for
passenger locomotives up to a speed of
200 km/h and a power output of 1.4 MW.
in gearbox testing
Wikov, as one of the few companies producing gearboxes, has a testing facility for
gearboxes, which allows for the simulation of the torque characteristics of a rail
vehicle running cycle. With new testing
equipment, the behaviour of the gearboxes can be tested as closely as possible to
the real conditions of rolling stock operation. The whole system is equipped with
stepless regulation of torque and engine
speed. This makes it possible to simulate
the driving characteristics of the vehicle,
such as: accelerating, climbing, descending, and braking. Using the recorded
speed, torque, or temperature, the gearbox can be tuned to be as ready as possible for actual operation. Gearboxes can
be cooled by blowing air through special
fans simulating the flow of air around the
gearbox in the real environment of the vehicle. The entire system is protected against overload by software. Test results are
immediately applied to the design of the
gearboxes – for example: to modify gear
design, gearbox cooling, or to further reduce noise. The system of hydraulic cylinders can simulate a dynamic load of
up to 300 m.s-2 and is equipped with two
1.4 MW engines – one for driving and the
other for braking.
In addition, Wikov has gained valuable
experience in testing drives for extreme
cold conditions. Customers from Russia in
particular require this type of test. Wikov
uses a cooling box of modular sandwich
design, so the box is easy to assemble
and disassemble. It is equipped with two
2×26 kW compressors with additional
fans, so it is possible to gradually cool the
gearbox, or the entire drive, to –45 °C.
For rolling stock gearboxes, the so-called
hard start is used, when the gearbox is
started without oil preheating. Obviously,
during such tests temperatures inside the
gearbox, pressures, torque, speed, and vibration are measured.
has increased to more than 3,000 gearboxes per year, and further significant
growth is expected for all types of rolling
stock. Wikov is going to expand its sales
network in key global territories using
Gmeinder's extensive network. The company is now directing its development activities to further increase the useful properties of the product portfolio and to
develop remote diagnostics.
Wikov MGI a.s. – production facility
Zbečník 356, 549 31 Hronov
phone.: +420 491 488 111
The current production and assembly capacity of gearboxes at the Wikov Group
Is a traditional (production in Hronov began in 1884 and in Pilsen in 1918) and the largest manufacturer
of industrial gearboxes and transmission equipment in the Czech Republic, and is also one of the world's
leading manufacturers of industrial gearboxes. In its current form, the Wikov Industry engineering group
began to establish itself on the market in 2002. In the Czech Republic, its companies include
Wikov Gear s.r.o. based in Pilsen (manufacture of industrial gearboxes, high-speed gearboxes and gears),
Wikov MGI a.s. based in Hronov (industrial gearboxes, gearboxes for renewable energy sources – wind
and tidal power plants, as well as drives and gearboxes for rail vehicles), Wikov Sázavan s.r.o. (manufacture of machine parts and engineering components), and Detail CZ (manufacture of precision parts for
trucks, construction and agricultural machinery). The group uses its Orbital2 company for the design and
construction of planetary gearboxes. Gmeinder Getriebe Gruppe, a German company manufacturing and
servicing gearboxes for rail vehicles, became part of the Wikov Group in 2019. In the same year,
the Wikov-RS facility for the assembly of rail vehicle gearboxes was established in the Russian city of Tver,
as a joint venture between Wikov Industry and PKTS, a Russian manufacturer of rail vehicles. The entire
Wikov Industry group currently employs more than 1,000 people, with annual sales of USD 120 million.
The whole group is profitable in the long run.