Tough trucks heading for CeMAT

The new hydrodynamic torque converter drive trucks in the DFG/TFG 316-320 and DFG/TFG 425-435 ranges can handle payloads of to 3500kg with maximum stacking height of 7.5m.

All the trucks, which are manufactured at the Moosburg production plant in Bavaria, are powered by Kubota engines. Marek Scheithauer, head of product management of IC powered counterbalanced trucks at Jungheinrich, explains: "These industrial engines, tried and tested around the world in heavy-duty construction machinery, already deliver high torque at low revs.”

 

The robust trucks feature high-grade, durable components and are suitable for tough operations in different climate zones. According to Scheithauer, the need for trucks that can operate in harsh operating environments inspired Jungheinrich to apply the latest in-house engineering developments to the new torque converter’s core components. These include innovations to the mast, chassis and steering axle.

The counterweight on the new stacker is an integral part of the load-bearing chassis, while the steering axle was integrated in the counterweight. "The centre of gravity is not only extremely low but also optimally positioned between the axles,” continues Scheithauer. This gives the truck its excellent stability and makes additional, electronic stabilisers redundant. Scheithauer adds that this translates into high dynamic driving stability and ensures good safety characteristics, both when stationary and on the move. 

The Jungheinrich transmission shaft in the new torque converter features an integrated non-wear wet multi-disc brake. Scheithauer comments: "Compared with standard drum brakes, wet multi-disc brakes mean almost no service costs.”

 

The cooling system functions fully even in very high ambient temperatures. The radiator is a single unit made of 100% aluminium. This makes the new torque converters suitable for operations in very hot settings and protects them from dust and other harmful environmental factors.

Due to the high grade components, servicing is fast, easy and economic. Scheithauer explains: "When carrying out a service, we can still guarantee high stacker availability and minimise interruptions to production and logistics work flows.” The L-shaped engine bonnet can be tilted almost 90°, while the quick-release side panels provides easy access to the engine compartment.

Operator comfort was a key consideration at the design stage. The slim steering column, for example, affords greater leg room, and the truck operator can easily adjust the seat to his or her needs and reap the benefits of fatigue-free stacker operation. Other items, such as beaker holder and clip pad, contribute to an uncluttered workstation. 

The new models feature an electric parking brake as standard. The operator simply presses a button to activate the brake. A new lifting mast design ensures improved view of the payload, forks and general working area, with Scheithauer adding:  "Good all-round visibility is not only conducive to relaxed yet concentrated and safe truck operation, but also to higher handling turnover rates.”

 

Workstations

 

In addition to showcasing new trucks at CeMAT 2014, Jungheinrich will be presenting a range of redesigned driver workstation innovations. These have already been integrated in its latest series of hydrostatic drive trucks, as well as the Series 4 and Series 5 electric counterbalance trucks.

Technical innovations include a Duo Pilot control unit integrated in the multi-adjustable armrest, giving the driver precise and responsive control of all truck operations. 

A newly-developed compact mast improves all-round visibility. Chains and hoses lie inside the uprights and the mast is more compact. Stefan Pfetsch, head of product and portfolio management for counterbalanced trucks, says: "This gives the driver an even better all-around view than the excellent view through the mast achieved in earlier Jungheinrich forklifts.” 

A new interactive driver dialogue system rounds off the new workstation. The multi-function display keeps the driver informed in real time on the status of all situation-relevant details. The layout is easy to read, yet displays all crucial information.

The control panel features freely assignable function keys, for example, to activate optional modules, such as driver assistance systems. This means even simpler menu navigation. Pfetsch remarks: "In addition to improving ergonomics this further enhances safety and improves productivity.”