INV-DE series
Synchronized lifting without uncoupling the train
INV-DE series electric lifting jacks are designed for synchronized lifting of railcars, locomotives and metro trains during scheduled maintenance, depot repair and overhaul. The equipment lifts rolling stock as a whole, without uncoupling, opening access to bogies and underfloor equipment.
The jacks operate in sets of 4 to 16 units controlled from a shared synchronization panel. The system continuously tracks the position of every column and keeps the car body strictly level throughout the entire lifting and lowering stroke.
The design is built around a self-locking screw pair: the load is held securely at any point of the stroke even during a complete power failure. Wheeled bases allow the jacks to be moved quickly around the shop and the set to be redeployed at a new repair station without crane operations.
Applications
Where the jacks are used
The INV-DE series is adapted to the dimensions and specifics of each customer's rolling stock.
Railcar depots
Lifting of passenger and freight cars during depot repair and overhaul, bogie and wheelset inspection.
Locomotive depots
Synchronized lifting of electric and diesel locomotive sections for bogie roll-out and traction drive maintenance.
Metro systems
Lifting complete metro trains in depots with restricted clearances, without uncoupling the cars.
Tram yards
Maintenance of trams and light rail vehicles, including low-floor rolling stock, with matched lifting heads.
Parameters
Technical specifications
Three base models cover lifting tasks from a single railcar to heavy locomotive sections.
| Parameter | INV-DE 30 | INV-DE 40 | INV-DE 50 |
|---|---|---|---|
| Lifting capacity, t | 30 | 40 | 50 |
| Lifting height, mm | 1600 | 1700 | 1750 |
| Lifting speed, m/min | 0.55 | 0.55 | 0.55 |
| Power supply | 3×380 V, 50 Hz | 3×380 V, 50 Hz | 3×380 V, 50 Hz |
| Motor power, kW | 4.5 | 5.5 | 7.5 |
| Units per set, pcs | 4–16 | 4–16 | 4–16 |
| Weight, kg | 780 | 860 | 980 |
Specifications can be adjusted to the customer's requirements.
Scope of supply
Standard package
The standard scope of supply covers everything needed to commission and operate the equipment.
- Electric lifting jacks — 4 to 16 units of the selected capacity
- Synchronization control panel — shared remote panel monitoring the position of every column
- Cable set — power and signal cables to interconnect the set
- Spare parts kit — spare parts, tools and accessories package
- Operating documentation — data sheet, operating manual, logbooks
- Options — extended lifting height, custom lifting heads, climatic versions
Safety
Multi-level protection system
Self-locking screw pair
The load is held mechanically at any point of the stroke — uncontrolled lowering is impossible even during a complete power failure.
Overload and misalignment protection
The synchronization system monitors the load and position of every column and stops lifting on any deviation.
Limit switches and emergency stop
End positions are restricted by limit switches, and emergency stop buttons are fitted on every column and on the shared panel.
Request a commercial proposal
Tell us the rolling stock type and the required capacity — our engineers will prepare a set specification and a price quote.