Element for connecting a lattice system
AssigneeTerex Demag GmbH
InventorMichael Martin
Life of this patent
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Abstract
An element is provided for connecting the chords of a lattice system, which consists of upper chords and lower chords, between which struts and/or stays are arranged, to a telescopic boom head. Thereby, the lower chords are directly connected to the telescopic boom head by means of bolts, while the upper chords can be connected to the telescopic boom head by a connecting element of variable length in such a way that—with respect to the connection of the lower chords—the upper chords can be connected to one another at a variable angle, and wherein the connecting element consists of two butt straps which can each be fastened at one end of mutually facing ends of the upper chords and can be connected to one another at different points.
Claims5
Element for connecting the chords of a lattice system, which consists of upper chords (3,4) and lower chords (5,6), between which struts and/or stays (8) are arranged, to a telescopic boom head, the lower chords (5,6) being directly connected to the telescopic boom head by means of bolts (7), while the upper chords (3,4) can be connected to the telescopic boom head by a connecting element of variable length in such a way that—with respect to the connection of the lower chords—the upper chords can be connected to one another at a variable angle, and wherein the connecting element consists of two butt straps (1,2) which can each be fastened at one end of mutually facing ends of the upper chords and can be connected to one another at different points.
Element according to any one of the preceding claims,
- characterised in that
- each butt strap (1,2) is configured as a two-armed lever, the arms enclosing an angle of <90° and a bore being provided in the region where the arms meet to fasten the butt strap at the end of the upper chord.
Element according to any one of the preceding claims,
- characterised in that
- one arm has a multiple of the length of the other arm and in that one bore is provided on the shorter arm and an approximately central bore and one arranged at the end are provided on the longer arm, to connect the butt straps (1,2) with one another.
Element according to any one of the preceding claims,
- characterised in that
- the butt straps (1,2) have different lengths.
Dependencies are inferred from the claim text.