Automatic spring tensioning device TENSOREX ® C+

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Spring device based on Spiral springs Very good solution for Rail and Tramway lines outdoor as in tunnel

In service from 2008s

Approved from the most important European Rail Authorities

Sold about 4000 units

TENSOREX C+ , RC

TENSOREX ® spring tensioning device systems Type C+

RFI Latina ( Rome ) – Italy -

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TENSOREX ® C+ : NEW SPIRAL SPRING TENSIONING DEVICE

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TENSOREX ® C+ working principle

FOCL = ƒ(T/R)

T[Nm]

T1

T2

shaft rotation [rad]

F OCL

OCL movement

R

F OCL

Rotation axis

Fix spring part

Variable pulley

Spiral spring

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TENSOREX ® C+ ADVANTAGES

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TENSOREX ® C+ ADVANTAGES

Installation Tensorex – 1 Supervisor, 1 Engineer, 3 men for 2 hours, 1 MEWP (mobile elevating work platform), 1 block and tackle Balance Weight – 1 Supervisor, 1 Engineer, 7 men for 5 hours, 2 MEWP (mobile elevating work platform), 1 RRV (rail-road

vehicle) crane Safety Tensorex – Remains mounted on the pole after a wire failure Balance Weight – Does not remain on the pole after a wire failure

Down Time Tensorex – Tension the overhead wires, reconnect the wires Balance Weight – Lift into place, replace damaged components (guide, pulleys, etc), tension the overhead wires, reconnect

pulley system and yoke plate to the wires Maintenance Tensorex – No scheduled maintenance required, read tension scale and compare to temperature Balance Weight – Grease pulley bearings, measure height & compare to temperature

Handling Tensorex 200-750 lbs Balance Weight 1500-3000 lbs

Design & Aesthetics Tensorex – Small, compact design; Pole design flexibility (size and weight total is less) Balance Weight – large, visible from ground level; larger poles required for load and nesting of the weight

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TENSOREX ® C+ back fitting details

1

Type A Pin 2xø19 L=60 1

2 2

Type B Pin ø24 L=500 3

Pin ø16 Fork L=19mm

3 3

1

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TENSOREX ® C+ selection chart

200300400500600700800900

1,0001,1001,2001,3001,4001,5001,6001,7001,8001,9002,0002,1002,2002,3002,4002,5002,6002,700

25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105

SPAN

LEN

GTH

[m

]

ΔT [°C]

How to use the Tensorex selection diagrams First example Span length = 500 meters Temperature variation ΔT [°C] = 50°C ( -10°C ÷ +40°C ) Crossing point between curves 400 and 450,so: Tensorex type 450 or higher Second example Span length = 700 meters Temperature variation ΔT [°C] = 60°C ( -10°C ÷ +50°C )

Every curve shows Tensorex C+ with 50 mm steps compensating length

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TENSOREX ® C+ type tests

Fatigue test 26.03.2010 - Politecnico of Milan. 120 years of life has been simulated Ultimate tensile strength 05.07.2010 – Politecnico of Milan. Breaking load 72 KN ( ropes breaks ) Release tests 19.05.2010 – TRC+ 750/2000, in Netherland ( Rotterdam ). OCL length 60 meters 09.08.2010 – TRC+ 750/1000, in Germany ( Lübbenau ). OCL length 250 meters, including 3 cantilevers Efficiency tests 21.01.2011 – Politecnico of Milan ,TRC+ 750/2000, result error within ±5% 30.06.2011 – Politecnico of Milan, TRC+1100/1000, result error within ±3% 16.12.2011 - Politecnico of Milan, TRC+8401800, result error within ±3% Salt spray test 19-12-2011- Politecnico of Milan, TRC+750/1000. 500 hours test in according to EN ISO 9227

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TENSOREX C+ markets

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TENSOREX C+ , RC

TENSOREX C+