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OwnerWalter Stowasser, Klaus Conrad +2inventors
InventorsWalter Stowasser, Klaus Conrad, Oliver Fries, Werner Michaeli
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The invention relates to a telescopic boom for a vehicle crane, comprising a base housing (1), which may be mounted to an upper construction on the vehicle crane in a horizontal joint (2), at the lower end thereof and has further horizontal joint (3), to which a tipping cylinder, for inclination of the telescopic boom, which may be connected to the upper construction, may be connected and several telescopic stages (4-11), running either in each other or in the base housing (1), all of which may be telescoped by means of a telescoping device (12) directly connected thereto and which may be locked relative to each other in the telescoped position. One of the telescoping stages (4-11) is embodied from two part pieces (4a, b) may be locked together by stage (4), and both part pieces (4a, b) are pivoted together by means of a hinge. The part pieces (4a, b) may be locked together by means of a locking device in respect of their longitudinal axis in a coaxial orientation and in at least one position, bent relative to each other. According to the invention, the hinge and locking device on the bending telescopic stage (4) lie within the internal contour of the next largest telescopic stage (5).
A telescopic boom for a vehicle crane, comprising a base housing (1) which, at its lower end, can be mounted in a horizontal rotary joint (2) on an upper construction of the vehicle crane and has a further horizontal rotary joint (3), to which a tipping cylinder that can be connected to the upper construction can be attached in order to incline the telescopic boom, and comprising a plurality of telescopic stages (4-11) which are in each case guided in one another or in the base housing (1), which can all be telescoped by means of a telescoping device (12) that can be coupled directly to the respective telescopic stage, and can be locked with respect to one another in the telescoped position, one of the telescopable telescopic stages (4-11) being assembled as a telescopic stage that can be angled in its axial length from two portions (4a, b) and the two portions (4a, b) being capable of being pivoted in relation to each other by means of a hinge, and the portions (4a, b) being capable of being locked to each other by means of a locking device with regard to their longitudinal axes in a coaxial alignment and in at least one position angled in relation to each other, characterized in that the hinge on the locking device of the telescopic stage (4) that can be angled lies within the inner contour of the next largest telescopic stage (5).
Dependencies are inferred from the claim text.