Tower crane balance arm and tower crane loading structure

The utility model belongs to the field of tower cranes, and discloses a tower crane balance arm which comprises a balance arm body. The balance arm body is composed of two lower chords and two upper chords, and one ends of the upper chords are fixedly connected with the corresponding lower chords. The other ends of the two upper chords are gathered on a connecting block, and a first connecting lug plate is arranged on the connecting block; the upper chord and the lower chord are made of square steel or round steel; the two ends of the two lower chords are connected through first connecting plates or first connecting pipes. The upper chord and the lower chord of the balance arm are designed by adopting square steel or round steel, the upper chord adopts the design of gradually closing up so as to form a connectable structure with a tripod of a suspension arm, through the optimization, the strength of the balance arm can be improved, and meanwhile, the utility model also discloses a tower crane loading structur