Walo slip-form finisher

To make everything run smoothly

Walo glee-seam-work-maker transforms rough roads into smooth surfaces

Walo PP_1
Concrete can be used in a variety of ways – for bridges, towers and dams, from roadways to roundabouts. A particularly popular process is the production of sliding formwork, in which concrete is poured into a mould that moves continuously forward. The Swiss construction company Walo Bertschinger AG also considers this to be a fast and cost-effective process, not least thanks to the self-developed sliding formwork maker.
In 2007, Walo designed a unique ceiling finisher for concreting traffic circles. This was a resounding success, as the number of orders doubled. The company is hoping for a similar success with its new sliding formwork finisher, a further development of this tried-and-tested concrete ceiling pacouple for roundabouts. The sliding formwork production guarantees a continuous, uninterrupted, on-site cast, flawless surface – smoother and more durable than would be possible with piece-by-piece construction. However, conventional chipping finishers are inflexible and require a considerable amount of installation time, which drives up project and construction costs.

Solid ingenuity – so that nothing crumbles.

Walos’s self-developed sliding formwork maker is fast, flexible and cost-effective. “The sliding form itself is 1.5 times longer than the tried-and-tested finisher for roundabouts. The width can be adjusted in 5 centimeter increments from 2.5 to 6.6 meters. The machine can achieve between 2.5 and 6.6 metres in six hours,” explains mechanical engineer Bernhard Zingg. “Runways, highways, winding country roads — the flexibility of the machine and the associated Leica PaveSmart 3D control unit facilitates precise ceiling production.”

Walo PP_2
Walos’s self-developed sliding formwork paluder can be used for roads from 2.5 to 6.6 metres wide.

Thanks to the fully automatic leveling control of the Leica system (with 3D sensor technology), conductive wires are no longer required. “You can concrete where and when you want. The fact that wires, piles and survey ingesps no longer need to be attached and removed saves time and money – for you and the customer,” Zingg continues.

A stable relationship with Hamilton.

A central component of the new machine is the Interim Tier 4/Stage III B John Deere Motor PowerTech PVX 4.5L, approved by the FOEN (Swiss Federal Office for the Environment). This motor drives the hydraulic vibrators, four caterpillar chains, the generator and the steering cylinder. “A compact engine with an integrated Interim Tier 4/Stage III B diesel particulate filter, complete and easy to install – exactly what we were looking for. You can operate the finisher at very low speeds and thus reduce fuel consumption. If we don’t get the full power, the machine will rotate at 1200 rpm,” says B. Zingg. As on previous occasions, Walo relied on the professional input of John Deere sales partner Hamilton AG in the early stages of development. “What do I appreciate most about Hamilton? The great products, the proximity and the short communication channels: if we need something, we get it – and even quickly.” Four projects have already been completed with the new machine, including the “Rheinstrasse H2 Nord” project in Basel. In this project, commissioned by the City of Basel, two sections of the road were provided with black, 26 centimetre thick concrete over a distance of 90 metres each — and in just four hours. With such fast results, you may need a different excuse in the future if you come to work too late.

Exhaust gas stage: iT 4 /Stage III B
Engine Models: PowerTech PVX 4045HFC93
Displacement: 4.5 litres
Rated power: 93kW at 2200 rpm
Cylinder: 4
Air system: air/air-charge air cooling Air/Air-charge air cooling
Distributor: Hamilton AG, 8302 Kloten, Switzerland

Nicolas Stirnemann