Spring Support of Mills and Crushers - Vibration Control
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Spring Support of Mills and Crushers
Spring Support of Mills and Crushers
Typical Spring Unit
Mills and crushers of all types cause are arranged in parallel to the spring sys- • The use of correctly designed
significant vibrations in their nearby tem to minimise the mass of the founda- elastic support systems will result
vicinity. This can lead to disturbances, tion while simultaneously stabilising the in lower stresses in the mill
damage and subsequently even the system. components. This will lead to
interruption of operations in power increased lifetime, longer main-
Significant advantages provided by the
plants and other industries. tenance-free periods and there-
GERB system include:
fore higher availability of the
A major concern is unquestionably the
plant.
damaging effect of vibrations in the • The mass of mill foundations
control room of the power plant. Vibra- equipped with the GERB system • Realignment of the foundation
tions can affect the control instruments is just 40 % or even less than that system in the event of soil set-
for the plant as well as individual instru- of conventional foundations. tlement is possible.
ments, control units and switch gears Shimming can be carried out with-
• Nowadays, certain types of mills
that are situated adjacent to the boiler. out any interruption to the mill
may even be vibration isolated by
operation.
Over the last 50 years, GERB has devel- so-called direct spring support that
oped and introduced elastic foundation functions without any foundation • The GERB system ensures the
systems for vibration isolation of coal mass. effective protection of the mill
mills. These systems are not only used against seismic loads. Therefore,
• Smaller foundations are more cost-
in almost all of Germany’s power plants, the danger of earthquake
effective and produce savings in
but also in many other power stations damage to the mills is mini-
terms of erection time.
and industries throughout the world. mised.
• When the mill mill foundations are
Spring support enables much smaller • The GERB system ensures lower
separate from the boiler house
and more compact mill foundations to vibration levels which in turn will
building, the erection of the mill
be used than the conventional massive benefit the personnel, the plant
foundations is independent of the
ones that were previously considered and the surrounding area.
erection of the main building. Mills
necessary.
may be erected either before or
Static loads are supported by the spring after the construction of the main Strict production methods in the
units, which are equipped with high qual- building, which means that mills manufacture of spring units and
ity, fatigue-free coil springs. Special ve- can be commissioned earlier if so Viscodampers® combined with
locity proportional GERB Viscodampers® desired. continuous quality control during
production ensure that the lifetime
• The installation of the elastic support
of GERB vibration isolation systems
system prevents the transmission
will be at least compatible with that
of vibrations to surrounding buildings.
of the entire plant.
Consequently, potential damage
to buildings, control instrumen- GERB vibration isolation systems
tation and sensitive equipment are supplied ready for installation.
is completely eliminated.
Upon request, GERB mounting
engineers are able to facilitate
the installation and adjustment
of the system on-site.
Typical Spring-Viscodamper® Combination
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FUJICAR Crusher, Japan MITSUI MIIKE Crusher, Japan
Spring Supported Mill
3
ALSTOM Coal Mill, Poland
Christian Pfeiffer Cement Mill, Germany
Loesche Slag Mill, Germany Loesche Mill for Slag Processing, Belgium 4
Spring Support of Mills and Crushers
Reference List (Excerpt)
Country Power Plant / Plant Manufacturer
Australia Loy Yang A and B EVT
Northern PS Babcock
Austria Duernrohr EVT
Riedersbach Loesche
Timelkam II EVT
Brazil Sotelca Babcock
Bulgaria Maritza East Alstom
China Beijing Thermal P/S Babcock
Castle Peak, Hong Kong Babcock E
Dingzhou Power Plant Beijing Electr. Pow. Equip.
Huaneng XinDian Power Pl. Shenyang Heavy Mach. Pl.
Denmark Asnaes Babcock
Fynsvaerket Loesche
Finland Meri Pori Babcock
France Platres la Farge Claudius Peters
Germany Altbach Babcock
Badenwerk EVT
Buschhaus Babcock
Frimmersdorf Babcock
Niederaussem Alstom
Weisweiler Babcock
Greece Aghios Dimitrios Stein, EVT
CEMTEC Cement Pipe Mill, UAE India Chandrapur-7 / MSEB BHEL
Neyveli EVT
Neyveli Zero Unit Alstom
Ireland Shannonbridge Babcock
Italy Brindisi Babcock E
Japan Hiroshima Miike Crusher
Ishikawa FUJICAR Crusher
Jordan Aqaba Babcock
Netherlands Amer Babcock
Gelderland Babcock E
Hemweg 8 Babcock
Poland Pomorzany Babcock
Belchatow Alstom
Spain Mairama Babcock
South Africa Duvha Babcock
Turkey Catalagzi EVT
Elbistan Babcock
UAE Emirates Aluminium CEMTEC
USA Betlehem Steel (M.D.) Claudius Peters
Lafarge (N.Y.) Claudius Peters
Babcock Pipe Mill, Germany
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worldwide
GERB Schwingungsisolierungen
Spring Support of Mills and Crushers
MUE_04/16 · Design: Sijades, Berlin · Printed: Woeste, Essen
GmbH & Co. KG
If you would like to receive a quotation for a vibration isolation system of Roedernallee 174-176
mills or crushers then simply send us the following data: 13407 Berlin/Germany
Tel. +49 (0)30 4191-0
Manufacturer, type and size of mill or crusher Fax +49 (0)30 4191-199
Total weight
Normal speed or speed range Ruhrallee 311
Weight of the motor 45136 Essen/Germany
Layout drawing Tel. +49 (0)201 26604-0
Fax +49 (0)201 26604-40
If further data for the installation is available it would help us in terms of
optimising our proposal and minimising the costs for the foundation system
of your mill or crusher. info@gerb.com
www.gerb.com
Certified to ISO 9001 ISO 14001 BS OHSAS 18001
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