German tower crane manufacturer Wolffkran is to add a new model to its Compact series in the form of the Wolff 8095 Compact. The company’s first trolley jib crane in the 900 tonne/metre class.
The new Wolff 8095 Compact
The new model is available in two variants the two fall 25 tonne 8095.25 or the four fall 8095.40 with a 40 tonne maximum capacity which also features a double trolley with automatic coupling, for additional flexibility to adapt to different applications. Both offer jib lengths from 30 up to 80 metres in five metre increments, with maximum 80 metre jib tip capacities of 10.5 and 8.6 tonnes respectively.
Double trolley
Wolff says that the main advantage of its new Double trolley is that no one needs to climb on the jib to manually separate the trolleys. In two fall operation with a single trolley, the 8095.40 achieves a point-bearing capacity of 9.4 tonnes - 10.3 tonnes with ‘Wolff Boost’. The new crane is ideally installed on Wolff’s 2.9 x 2.9 metre TV 29 tower, and when combined with the larger TV 33, enables freestanding tower heights of up to 100 metres.
Mohamed Abouelezz, head of business and product development said: “With the new Wolff 8095 Compact, we have succeeded in designing our largest trolley jib crane to date with an impressive lifting capacity. Thanks to its tower top section, which is about six metres shorter than the cross jib version, it is very compact and economical. And it comes with a new feature that makes operation even more flexible: the automatically couplable double trolley.”
The transition from four to three chords and the double trolley
And from above
The high capacities are, says the company due to both the lighter weight separable trolleys, but also to the four chord design of the first three jib sections, instead three chords. Project manager Markus Richter says that the design "optimises force transmission in the jib and makes individual components lighter, enabling significantly higher lifting capacity than with a three chord design.”
The winch and loading jib
The 110 kW winch achieves line speeds of up to 160 metres a minute, m/min. For lower power demands, the hoist reduced by up to 50 percent helping reduce the size of the generator required. A hoist rope support on the jib is said to reduce ‘rope sag’ from seven metres to just 1.5 metres, minimising the risk of catching another cranes hoist rope while slewing.
The hoist rope support
Wolff says that the new crane cane be assembled with a standard 350 tonne All Terrain crane, while the tie ins for the jib can be adjusted directly from the tower top section without the need for a mobile crane.
The 8095 Compact also features improved bolt storage at critical locations where bolt installation is particularly demanding. For example, in the counter jib section, where bolts weighing up to 70kg can now be installed without excessive effort. Additionally, a wide access route to the driver’s cab, a maintenance platform for the slewing gears, and galvanised walkways all help to improve safety and ease of working during assembly, maintenance and tear down.
The bolt storage feature
The counter jib walkway and pendant supports
Other safety equipment includes Electronic overload protection, anti-collision interface, fine positioning modes, automatic performance optimisation for hoisting and trolley travel, as well as ‘Wolff Link’ remote maintenance system with real time display of the crane.
The new crane will be officially launched at Bauma in April. See: Vertikal.net Events
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