Hydraulic Rail Stretching Machine

The Hydraulic Rail Stretching Machine is a hydraulic rail tensor and rail puller designed for rail stress relief, seamless long rail relaying and section adjustment on common tracks. It is suitable for 50 kg/m, 60 kg/m and 75 kg/m rail types and is used in field conditions where the operating temperature is lower than the rail locking temperature.

By applying hydraulic pulling force, the machine stretches a zero-stress rail length to the required locking-temperature length before the rail is re-locked. Its wedge iron locking form grips the rail waist rather than the rail head surface, helping avoid damage to the rail head during operation.

The machine is intended for railway maintenance and infrastructure teams handling seamless track stress relief, broken rail repair and track seam adjustment. According to the product description, one machine with a variety of configuration can meet different field working methods, while offering light weight, simple manipulation and strong rail pulling force.

It can also support an alternative to the traditional broken rail repair method by enabling in-situ re-welding without inserting short rails. This helps save time and labour, expand the operating rail temperature range and prevent changes to the actual rail locking temperature.