Posts Tagged: CSR



Curvo Ropeway: Non-Linear Aerial Urban Cable Cars by CSR

CURVO Ropeway's angular module. Image by CSR.

CURVO Ropeway’s angular module. Image by CSR.

A great thing about researching CPT is that sometimes you never know what you’re going to stumble onto next. Recently, I came across a ropeway manufacturer in India called Conveyor & Ropeway Services where a few years back they announced that they’ve invented a new type of aerial transit called the CURVO Ropeway. Without going into much detail at this time, some of the purported features of this technology include:

  • Cabin capacity: 8-10 persons
  • Tower “kerb” spacing: Every 80-90m
  • Tower footprint: 2.0 sq.m.
  • Line capacity: 2,000-2,500 pphpd (single track); 4,000-4,500 (double)
  • Cost: USD$27 – 50 million per kilometre
  • Average Speed: 12.5km/h

While the stats above are comparable to a MDG (if not more expensive, and lower capacity), it appears that main difference between the CURVO and its existing counterparts lies in its gripping mechanism. Since I’m not an engineer by trade, some of the terminology used to describe the technical features of the CURVO grip is not well understood. However, as I know some of our readers are more technically-oriented than I am, an excerpt from the original article has been pasted below that describes the company’s innovation:

CURVO Grip. Image by CSR.

CURVO Grip. Image by CSR.

” The crux of the CURVO Ropeway’s invention /development lies in designing the Gripping Device of the rope, in its vertical structure with respect to the rope, along with horizontal actuation of gripping means, and rendering it possible to shift centroid of suspended Cabin / Carriage, essentially required to negotiate the horizontal curve at line speed, keeping the grip structure clear of the Battery Rollers, whose main function is to provide horizontal support to the tensioned rope negotiating the curve. This could be done with relational adjustment of levels of the rails supporting the two wheel bogies on either side of the rope effecting changed suspension, and relief of the Rope on the Battery Roller system. Depending on city configurations, the Curvo lines should be able to cross each other.” 

So in plain language, it seems that CURVO’s claim to fame is that their cabins can make sharp corners without detaching from the propulsion cable. Exactly how many degrees it can turn and navigate is unclear. But based on a video that the company has released, it seems that their prototype line have modest cornering capabilities (skip to 6:41).

However, we already know from existing systems (i.e. Kolmarden Wildlife Park Cable Car) that unidirectional lines can already accomplish significant turns with light infrastructure. How this is different or similar to those features requires more investigation. If anything, perhaps due to geographic and language barriers, the video has created just as many answers as there are questions.

I always find it incredibly interesting to see how different companies around the world are constantly developing ideas and techniques to solve our urban transport challenges. Whether this technology catches on is unknown at this time — however, West Bengal and Dhaka, Bangladesh is reportedly in the midst of investigating its potential feasibility.

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