Electro Hydraulic Thruster Operated Rail Clamps
Electro Hydraulic Thruster Operated Rail Clamps are used in moving machines like Travelling Trippers of coal handling plant, Gantry Cranes and Semi Gantry Cranes.
In case of Travelling Tripper, even though it is stopped by shutting off the drive, the running tripper belt drags the tripper on the rail. To avoid this dragging, Thruster operated rail clamps are used.
In case of Gantry and Semi Gantry Cranes, Thruster Operated Rail clamps are used to hold the cranes to the rail in case of storm and avoid Toppling. Hence, Thruster rail clamp is also known as Storm Brake or Parking Brake or Hoist Brake.
Operation of Thruster rail clamp – when the machine power is put on, the Thruster operates opening the clamp against spring force and the machine moves freely on the rail. When the power to machine is shut, thruster is shut, closing the clamps on the rail with the spring force.
Depending upon Travelling Tripper capacity, following models are available-
| Sr. No. | Model | Clamping Force | Thruster | Thruster Stroke |
| 1. | TRC 500 | 500 kg | 50 kg | 50 mm |
| 2. | TRC 1000 | 1000 kg | 80 kg | 50 mm |
| 3. | TRC 1500 | 1500 kg | 120 kg | 60 mm |
| 4. | TRC 2000 | 2000 kg | 200 kg | 60 mm |
| 5. | TRC 3000 | 3000 kg | 300 kg | 60 mm |