FIELD: mechanical engineering; tower cranes. SUBSTANCE: invention relates to device for assembling tower crane truss members. Device makes it possible to form detachable butt-joining of beams and trusses of hollow configuration, being parts of assembly members of metal structure placed one onto the other. Device contains linings. Lower lining part in form of base is welded to top beam being underlying member of structure, while its upper part in form of rod is driven into lower part of beam being part of overlaying member of structure. Rod is provided with two cross holes made at right angle relative to each other which serve to pass detachable mounting fingers. EFFECT: facilitated assembling of mast members of lifting tower crane. 8 cl, 3 dwg
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