Rahee Rail Expansion Joint design is based on proven design of thick-web switches which allows reciprocal movement of both tongue rail and stock rail up to 100 mm at each end along the length.

Switch type expansion joint design is proposed to eliminate the gap which causes severe impact during the movement of rolling stock. The basic concept of this design is to provide a curved guided path to uncut stock rail by precise machining of tongue rail. In this design both thick web tongue rails and stock rails are elastic fastened through the entire length using Canted chair.

Use of inner fastening for holding stock rail on both sides minimizes the possibility of dynamic gauge widening. The tip of tongue rail is housed in the recess under the head of stock rail which is formed by machining of the stock rail head. This reduces impact at entry and wear at switch tip.

Salient features of design:

• Gapless & Boltless
• No use of brackets
• No machining of Stock Rail
• Use of thick web tongue end forged rail
• Use of standard fastenings
• Ease of installation
• Lower noise and maintenance
• Excellent design for Heavy Haul and other applications
• Low product life cycle cost

RTT Glued insulated joints consist of glass fiber cloth insulated fish plates, a corresponding number of insulated high-tensile bolts and end posts made of insulating material.

They can be assembled in-situ or at work. Joints meet international standards for insulation resistance, pull load, deflection test, wet insulation test etc. Every fabricated/ assembled joint is checked for vertical and lateral alignment. Joints are subjected to insulation resistance tests in dry conditions. Pull out test is also carried out at work as a prototype test. The prototype test also includes insulation tests in dry conditions and tests in wet conditions.

Advantages

• Reduced wear in wheel overrunning area
• Reduced maintenance costs
• Reduced noise
• Greater riding comfort