Product innovations 2012 - 2013 - Schwab Verkehrstechnik AG

Product innovations
2012 - 2013
New
System innovation Product development
AZK – the automatic tow coupler
- Replaces conventional draw hooks and screw couplers
- Price – for – value revamping of old vehicles
- Both coupling and decoupling operations carried out without staff
- Allows network operation of old vehicles as multiple section trains
Technical optimisation
Buffer + with automated
grease lubrication
- Significant increase of service life
- Prevents from riff formation
- Minimal maintenance costs
- Eliminates completely the manual re – lubrication
CLFTS – Draw gear
- Weight reduction of 17 kg
compared to LFTS
- Higher service life
- Less wear and cost optimisation
SCHWAB – Gas hydraulic
- Now compliant to EN 15227
- Intelligent hydraulic = 1g buffer
- Customisable to specific projects
100th anniversary of
our foundation
Schwab Verkehrstechnik
- Innovations for couplings, buffers
and draw gears

Technical optimisation
Improving safety and saving money of
coupling operation: that’s what we do
Schwab tow couplers have transformed manual screwing into a
safe and cost–saving connection
The tough competition in the railway industry is forcing operators to continuously
set higher quality and comfort standards. By introducing a
clock face schedule and/or reopening local line, the use of additional
trains at peak demands is not appropriated and often not compatible
with regular headways. One solution is to use a Multiple Unit (MU) with
an automatic coupler, which offers a full operational flexibility. Many
operators are still using MU’s equipped with screw couplers which increase
the costs and the operating time compared to an automatic coupling
system, due to the manned operations. The dilemma for the operator
is that, because of the construction of the car body, the screw coupling
cannot be substituted with an automatic coupling, and the operation
costs of a new MU are pushing the budget too much.
Domino tow coupling system
Schwab Verkehrstechnik AG can now respond to this need by providing
an automatic tow coupling which replaces the screw coupling.Coaches
can be connected by means of the tow coupler at the same time mechanically,
electrically and pneumatically, which saves operation time and
increases the reliability.The coupling principle consists of transmitting
the tensile forces over the draw gear in the middle, while side buffers
convey the compression forces. Both free – stroke and tensioning devices
are included in the coupler.Another unique feature of the Schwab
coupling is its ability to allow a soft coupling operation on straight trakks
as well as in curves by shifting the coupler head out over the buffer line.
Once mechanically coupled, the tow coupler is drawn right behind
the surface of the side buffers and firmly tightened. Coupling operation
can be carried out at very low speeds, which is highly appreciated by the
train driver and increases passenger comfort. The free – stroke and tensioning
devices are driven by the compressed air of the feed pipe. They
Conventional draw hook system
are triggered by a control unit placed
below the car body right behind
the rail guard.
As system provider, Schwab
Verkehrstechnik AG also delivers
the buffers with synthetic insertions
and the draw gears.
Author: Laurent Léger
Coupler Development
www.schwab-vt.ch
Source: Railway Gazette International 9/2012
Page 122

Technical optimisation
Buffer + with automated
grease lubrication
Focus
Product
The new self – greasing buffer + lubricates its own head as long as up to 12 months.
Manual re-lubrication during this period of time is no longer needed. Additionally, this contributes towards reducing
the friction and preventing from formation of riffs. Life service of the Buffer + is greatly increased thanks
to the reduction of the wear and to an improved gliding behaviour. The lubricant dispenser can be filled up with
different types of lubricants. Schwab Verkehrstechnik AG is able to check the different types of grease according
to a reliable functioning of the lubricant dispenser.
Borehole in
buffer plate
Body housing and
lubricant conduct
Lubricant dispenser
Product development
New buff and draw bar:
Schwab Gas – hydraulic
Our proven technology, now compliant to EN 15227
The hydraulic is equipped with an overload protection as a return stroke
damper as well. The hydraulic can be customised according to the specified
coupling speeds and to the vehicle masses thanks to the variable
orifice.
Lid
Self – greasing Buffer +
Vorteile auf einen Blick
- Erhebliche Verlängerung der
Puffer-Lebensdauer
- Keine Wartungskosten,
eliminiert vollständig die
manuelle Nachschmierung
Autor: Gérald Siegrist
Buffer Development
www.schwab-vt.ch
Source: CAD Simulation Construction
Schwab Verkehrstechnik AG
Illustration shows the actual force – stroke
chart compared with the predicted data.

Product development
Greater lightness:
CLFTS - draw gear
Technical optimisation
The 2 spring sets were replaced by a central spring with centrical force
transmission. Wear has been significantly reduced by removing the yoke
screws.
• Weight reduction of 17 kg
• Life service increased thanks to less wear
• Cost optimisation.
CLFTS (new design)
LFTS (conventional design)
CLFTS
Total weight approx. 66 kg
Rounded washer 660-101-121 removed
Slotter nut and splint pins removed
Pressure plate 713-00014 (2.9 kg)
Spring set with 6 pads
spacer screw removed
LFTS
Total weight approx. 83 kg
Rounded washer 660-101-121
2 x slotter nut and splint pins
Yoke screw 660-101-037 (12,5 kg)
Double spring set with 2 x 5 Pads
2 x spacer screw
Difficult assembly, many components
Focus
Product
Easy – to – assembly thanks to only 1 spring set

Our range at a glance
Schwab Verkehrstechnik:
Basic product range
Couplings
Automatic couplings:
automatic tow coupler, Schwab type, type 10 Scharfenberg
compatible, +GF+
Intermediate couplings: orders’ complementary couplings
Rescue couplers: UIC compliant
Adapters: for different kind of coupling systems
Buff and draw bar: hydraulic
Optional: special executions, repairs and overhauling
Buffer +
Side buffers: Cat. A (30kJ / 40 kJ), Cat. C/ Cat. L
Diagonal buffers: Cat. A/ Cat. C
Buffers for passenger coaches: S110 and Buffer 2000
Buffer plates: plastic insertions or steel plates
Spring set systems:
elastomer (Tecs – Pak ® ) / hydraulic / hybrid (combination of
hydraulic and elastomer)
Optional: with automated grease lubrication
Draw gears
Draw gear for freight waggons
Draw gear for passenger coaches
Draw gear for special vehicles
Double spring draw gear: specially for installation in small places
Short draw hook: directly assembled in the head stock
Coupling bars
Cushion bar for 4 – axle waggons
Product certification: nearly all items of our product range are covered
by a TSI approval.
Info
SCHWAB automatic coupler
Buffer + for passenger coaches with
non – metallic insertion
CLFTS: the new draw gear
Smooth coupling

1912 - 2012: Company’s foundation anniversary
Innovation, safety and
certified quality
Schwab Verkehrstechnik AG offers:
System solutions for railway buff and draw
• Reliability: we supply more than 90% of the Swiss railway network,
including mountain railways, with our products – almost the entire
network trusts our products and services!
• Strong focus on Research & Development: nine development
engineers make up over 25% of our total staff.
• Manufacturing Strength: our average buffer output is 12.000 p.a.
(producing one buffer every 36 minutes), and over 3.000 coupler units
have been delivered since the company’s foundation in 1912.
• Your partner for Special Executions / Special Solutions
for the purposes of Energy Absorption, Special Applications,
Maintenance and Service.
Company certification: ISO 9001:2008 since 1994; EBA since 1993 /
2000; Q1 of the DB since 1998 and DIN EN15085-5 category CL4 of the
welding technology, UIC standards, etc.
Contacts
Schwab Verkehrstechnik AG
Ebnatstrasse 150A
CH-8207 Schaffhausen (Switzerland)
Tel: +41 (0)52 631 27 86
Facsimile: +41 (0)52 631 28 41
Company
portrait
Schwab Verkehrstechnik: Pioneering
products for the railway since 1912
www.schwab-vt.ch
verkehrstechnik@schwab-vt.ch
© 8/2012 Schwab Verkehrstechnik AG / Conzept: ideenatelier.ch