Ladder Tracks
Ladder Track System “Reduced Maintenance and Exceptional Environmental Efficiency”
The ladder track was developed by the Railway Technical Research Institute of Japan and consists of ladder-type sleepers fastened to 2 longitudinal pre-stressed concrete supports. Tubular steel joints are used to maintain track gauge.
Ladder tracks offer reduced maintenance and exceptional environmental efficiency giving them a structure well-suited to the needs of the 21st century. From the sale of ladder ties to proposals for construction methods and related systems, Kiyota works on machinery development to provide its customers with total service support.
Types of ladder tracks
- -Reduced track maintenance-Ballasted ladder track
- -Exceptional environmental efficiency-Floating ladder track
-Reduced track maintenance-
Ballasted ladder track
Featuring end joint beams to prevent sleepers from sinking, Ballasted ladder tracks are available in non-sleeper pad types with sleepers laid directly on the ballast and sleeper pad types with the sleeper pads fixed to the underside of the sleeper.
-Exceptional Environmental Efficiency-
Floating ladder track
Categorized according to their sleeper pad, floating ladder tracks consist of “rubber-based anti-vibration types” or “polyurethane-based sleeper pad types.” The latter is further divided into an “L-shaped concrete bed type” made from an L-shaped concrete pedestal and a “ductile cast iron pedestal type” made using the pedestal method.
Anti-vibration type floating ladder track
L-shaped concrete bed type floating ladder track
Ductile cast iron pedestal type floating ladder track
Construction examples
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Ballasted ladder track
- CLIENTKobe Electric Railway Co., Ltd.
- AREA Arima Line, between Hanayama and Oike Stations
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Anti-vibration type floating ladder track
- CLIENTNankai Electric Railway Co., Ltd.
- AREA Nankai Main Line, Izumisano Station
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L-shaped concrete bed type floating ladder track
- CLIENTNankai Electric Railway Co., Ltd.
- AREA Airport line, between Izumisano and Rinku Town Stations
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L-shaped concrete bed type floating ladder track (for expansion joints)
- CLIENTNankai Electric Railway Co., Ltd.
- AREA Nankai Main Line, between Izumiotsu and Tadaoka Sations
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Lateral brace type floating ladder track
- CLIENTKeihan Electric Railway Co., Ltd.
- AREA Keihan Main Line, between Temmabashi and Kyobashi Stations
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Ladder sleepers for track joints
- CLIENTKobe Electric Railway Co., Ltd.
- AREA Ao Line, between Aina and the Kawaike Signal Box
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Ladder sleeper installation using self-propelled trolley
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Ladder sleeper installation using a medium-sized over-raise rail shifter
