Product category:
Industrial Motors
News Release from: Lenze | Subject: Geared motors
Edited by the Engineeringtalk Editorial
Team on 17 August 2005
Geared motors assist in rail link safety
The Channel Tunnel Rail Link includes 78 high integrity doors fitted with louvres for ventilation and blast protection, all powered by Lenze geared motors.
The Channel Tunnel Rail Link (CTRL) is a section of high-speed track running in a tunnel under London In the tunnel are 78 high integrity doors fitted with louvres for ventilation and blast protection
This article was originally published on Engineeringtalk on 21 Feb 2000 at 8.00am (UK)
Related stories
Lenze G-motion geared motors now available as IP65
The Lenze G-motion range of geared motors available from Bedford based Lenze Limited is now available with IP65 protection
Aluminium worm-geared motors fit straight in
The new Spaggiari SW range of aluminium worm-geared motors is designed to interchange with existing models
The louvres are remotely controlled and powered by Lenze geared motors with a disconnect clutch, a combination that is compact and reliable in this safety critical environment.
The main contractor for the CTRL, Emcor Rail, chose Booth Industries of Bolton to design and construct 78 cross-passage steel bulkheads and doors.
Booth is a market leader in the design and manufacture of special doors, windows and walls, particularly for fire and blast protection systems.
In this case the company turned to Jacksons Power Transmission of Stoke-On-Trent for a compact geared motor to control the louvres, plus a disconnect clutch that allows the louvres to close in the event of a power failure.
Jacksons used a Lenze smooth bodied permanent magnet motor for 24V supply together with a three-stage planetary gearbox.
The motor has no fan and is enclosed to IP54 with a body diameter of only 70mm.
Output is 110W at 3000rev/min and full torque is available down to zero speed.
The planetary gearbox provides a compact solution for an inline drive with a ratio of 93 and a body diameter of only 52mm.
Output is 23Nm at 32 rev/min and mounting is easy with a foot connected to the face of the gearbox.
The other part of the drive package is a disconnect clutch manufactured by Intorq (formerly Lenze Brakes).
This clutch is bearing mounted and chain driven from the gearbox with a rating of 30Nm.
It is normally engaged with a 24V supply connecting the geared motor to the louvres.
In the event of a power failure the clutch disengages leaving no residual torque and allowing a spring mechanism to close the louvres and contain any potential blasts.
The package of Lenze equipment supplied by Jacksons Power Transmission is a key part of the Booth Industries door design and was chosen for the space-saving compact dimensions, high reliability and zero maintenance requirements. Request a free brochure from Lenze ...
• Lenze: contact details and other news
• Email this article to a colleague
• Register for the free Engineeringtalk email newsletter
• Engineeringtalk Home Page
Search the Pro-Talk network of sites
