DOLL at bauma 2016

DOLL will be exhibiting trailers which have been optimised regarding payload and application area, price-performance ration, quality and reliability, safety and longevity

Trailers on display:

• panther low-loader: 1+3-axle combination; the dolly is firmly fixed with the gooseneck

• VARIO semi low-loader: 4 axles with friction steered axle; a robust, flexible vehicle for the construction sector

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DOLL panther:

The 4-axle panther low-loader in 1 + 3 combination (type T4E-S2A) is the result of consistent further development of the panther series according to the market’s requirements. These are mostly payload optimised vehicles combined with easy handling for the construction industry.

The 1-axle dolly and the 3-axle rear running gear are the perfect combination for an optimum load distribution in the low-bed (even in extended version) with a payload of approx. 50 t. The trailer combination exhibited will be illustrating a dolly which is firmly fixed to the gooseneck. The loading process of construction machinery can be effected via hydraulic rear ramps and a hydraulically liftable low-bed which is a clear advantage in narrow building lots. On the other side, removable dolly versions, which can only be loaded from the front side, require more shunting which is not even possible due to the lack of space.

With the combination exhibited, DOLL has manufactured a trailer type which can be utilised for all kinds of construction machinery – even the newly developed offset feeders can be transported without any problems thanks to an intermediate table.

Further advantages:

• In the past years, 2 + 3 or 2 + 4 combinations have been used to get a comparable payload. However, these stand for additional economical expenditures.

• The fifth-wheel load of the gooseneck can be adjusted via keypad (CAN bus) from 17.5 t to 25 t. This makes the trailer suitable for 3-axle and 4-axle trucks at the same time.

• Depending on the cargo and required payload an economic 3-axle truck is sufficient.

• The stepless fifth-wheel load adjustment guarantees an optimum compensation with the dolly axle (no overloading of the dolly’s axle load!)  

• The dolly can even be lifted in loaded condition which ensures better shunting.

• The drive-over height of the running gear is only 780 mm in lowered position. The low-bed is designed in such ways that a telescoping by 1.5 m can be realised with full payload.

One version of the panther 1 + 3 combination has especially been developed for construction machinery of the industrial sector. With this variation, the trailer has a telescoping flatbed up to 13 m combined with a very low loading height of only 300 mm as well as a continuous rear excavator recess. Another feature is that the dolly can be detached at the connection to the low-bed. During the loading process of construction vehicles this disconnection point is being activated and the compensating gooseneck together with the fixed dolly are separated from the low-bed.   

Semi low-loaders

Also the second trailer on display is a versatile all-rounder for every vehicle fleet related to construction. The 4-axle semi low-loader with the proven DOLL friction steered axle is extendible and equipped with a

• hydraulic double ramp

• a rear excavator recess and

• wheel recesses between the first and second axle.

One special feature are drive-on ramps on each side of the low-bed which make the loading process much easier. Due to the low dead weight this trailer also has a payload of approx. 46 t. The trailer type is robust and universally applicable due to the equipment with all necessary components such as a comprehensive DOLL lashing package, extensions, intermediate table, hydraulic lateral displacement of the double ramps and side wall on the fifth-wheel load. The outer frame has sufficient twist locks for the transportation of different ISO containers. The excellent manufacturing quality ensures the reliability and longevity of the semi low-loader.

Information on DOLL panther

DOLL panther will be exhibited at bauma 2016 for the third time – its construction principles and characteristic features have not been changed: the ORIGINAL remains the ORIGINAL.

All panther trailers are a symbol of quality and safety, not only when driving but also from an economical approach. The panther scores with lowest costs for maintenance and wear. Up to now, there has not been a single warranty claim and the 5-year guarantee has not come into use – all this with more than 4,000  delivered axle lines of which many have already been driven for more than 500,000 km. This is a clear fact that speaks for itself.

The interpretation of the independent wheel suspension with double wishbone and high-speed axle (sometimes more is less and not the other way round) has set new milestones. The manufacturing precision, which meets all the requirements of engineering, as well as the use of premium components ensure the quality, reliability and longevity of panther trailers.

It is a matter of course that DOLL is also able to manufacture trailers with pendulum axles. However, these are more suitable for the usage in harsh off-road conditions where the pendulum arms can demonstrate their full force. This mostly applies to military, oilfield or mining applications. It could be expected that – with compact design – the pendulum axle has poorer kinematics and therefore a higher wear as well as less driving stability.

For this reason the development of the panther running gears is concentrated on the modular construction series to be able to meet the demands of different branches and countries. In detail, these include solutions like panther trailers with friction steered axles for an optimum curve negotiability or the DOLLtronic system based on CAN bus which ensures the operation of all hydraulic functions via radio remote control.