ONVALLA Co., Ltd. and AMR Asia Co., Ltd. jointly designed a “Power Rail installation vehicle” for Thailand’s first straddle monorail mass transit lines: the Yellow Line (Lat Phrao–Samrong) and the Pink Line (Khae Rai–Min Buri). The Power Rail is the main power supply for the trains on both lines, and the vehicles are used to carry and install it along the guideway.
Key Facts
| Item | Detail |
|---|---|
| Partners | AMR Asia Co., Ltd. and ONVALLA Co., Ltd. (joint design) |
| Projects | MRT Yellow Line (Lat Phrao–Samrong) and MRT Pink Line (Khae Rai–Min Buri) |
| System type | Straddle monorail, the first in Thailand |
| Drive | Generator driving electric motors |
| Sets produced | 8 sets, manufactured and tested by ONVALLA |
| Longest load carried | Power Rail and accessories up to about 11 metres long |
How Is Each Installation Set Configured?
The vehicle’s drive system was designed to run on a generator that powers electric motors. Each installation set consists of two vehicles:
- A small installation vehicle, used to store the tools and equipment needed to install the Power Rail.
- A large installation vehicle, used to carry the Power Rail and its accessories, which are up to about 11 metres long.
Installation Progress
The first Power Rail installation set was installed at the Main Depot of the Pink Line project at the end of September 2020, with the second set scheduled for the Main Depot of the Yellow Line in early October 2020. The plan was to install all eight sets by the end of 2020, so that vehicles bearing the ONVALLA name would run overhead along Lat Phrao, Ram Inthra, Chaeng Watthana and Srinakarin roads.
What Does This Project Show?
The project shows ONVALLA’s capability beyond standard cranes: designing, manufacturing and testing special-purpose handling equipment together with a partner, for a customer’s specific application. If your project needs special handling equipment, see our crane solutions or contact our engineering team.
