Loco Drop Tables
Hartex has full Loco Drop Tables designed to accommodate one, two and three axle bogies. The control of the table is through a PLC, which is programmed for automatic operation. The precise positioning of the drop table is automatically monitored, thereby providing the operator with maximum convenience and decreasing the wear and tear on the drive mechanism, designed for many years of reliable, safe operation.
Single Axle Drop Tables
Hartex single axle drop tables are designed for rapid change out of locomotive combination wheel set and motor assemblies. These drop tables are capable of operating with multiple service tops. Control systems utilize PLC for integration of interlocks to provide maximum operator and machine safety. Automatic lubrication systems also maximize lift system component longevity.
Operator Controls – Release Top
These systems utilize PLC control to allow the operator to select the destination of the drop table. Once the travel is initiated, the drop table smoothly accelerates to full speed, travels until the stop is within range, decelerates to a creep speed and stops in position at the centre of the selected track.
Body Stands – Release Top
Body stands support the locomotive during the truck change-out procedure. The body stand may be moved parallel to the locomotive for easy jacking pad positioning. The body stand support pad be manually raised and extended to ensure proper contact with the locomotive jacking pad.
The service top is designed with an elevated rail section for easy access to the locomotive truck assembly. A locking system supports the service top when the drop table carriage is not in position. Lock bars transmit crossover loads to the pit walls so that the drop table carriage is never subjected to this crossover loading.
Traction Motor Dolly
Single-axle service tops may be provided with a traction motor dolly to support and align the traction motor frame during change-out. Large diameter rollers allow the dolly to be easily positioned and a latch mechanism holds the dolly in position. The hydraulic cylinder uses a 110V power pack.
Carriage Drive System
The carriage drive system uses scissor arrangement hydraulic cylinders to raise and lower the drop table. The hydraulic cylinders are located within the scissor arm mechanism and offers reduced underground accommodation than traditional screw type drop tables.
Release tops are used to cover the area where the dismounted bogie set or axle is raised through the shop floor. They can be located on one of the shop tracks so the bogie can be rolled to a wheelset repair area. Release stops that are located on a shop track location may be designed to accommodate the rollover load of a locomotive passing through.
Rail Loco Drop Table
These systems are typically custom-designed and manufactured to meet the specific needs of each customer, which provides engineers, designers and facility owners with a wide range of options.