A crane comprising at least three parts articulately interconnected in a plane in the form of a pillar , a crane arm and a lifting boom inserted therebetween, - wherein the lifting boom has a main beam which is pivotally connected to the pillar via an inner joint and is pivotally connected to the crane arm via an outer joint , - wherein the lifting boom comprises a parallel strut pivoting parallel to the main beam , which via an inner link pivotally coupled between the parallel strut and the main beam , as well as an outer link pivotally coupled between the parallel strut and the main beam together with the main beam form a parallel trapezoidal geometry, - wherein the inner link, hereinafter referred to as the horizontal link , is arranged to be actuated by an angular adjusting device acting between the main beam and the horizontal link so as to pivot about its pivot point in the main beam , as well as via the parallel strut and the outer link, hereinafter referred to as the knee link , to adjust the angular position of the crane arm relative to the main beam in the outer joint , - wherein a lifting yoke is pivotally journaled in the main beam , which for lifting and lowering the lifting boom is actuated by a lifting device , - wherein the horizontal link and the lifting yoke are mutually connected via a strut of a fixed length articulately connected to both of them, whereby the lifting yoke is slavishly brought along in the pivoting of the horizontal link under the action of the angle adjusting device , characterized in - that the lifting yoke forms a two-armed lever, which at one end is articulately connected to the lifting device at a pivot point and at an opposite end is articulately connected to the strut at a pivot point , and is pivotally mounted in the main beam via a pivot point located between the pivot points and , separate from the journaling of the main beam in the pillar . - wherein the lifting boom has a main beam which is pivotally connected to the pillar via an inner joint and is pivotally connected to the crane arm via an outer joint , - wherein the lifting boom comprises a parallel strut pivoting parallel to the main beam , which via an inner link pivotally coupled between the parallel strut and the main beam , as well as an outer link pivotally coupled between the parallel strut and the main beam together with the main beam form a parallel trapezoidal geometry, - wherein the inner link, hereinafter referred to as the horizontal link , is arranged to be actuated by an angular adjusting device acting between the main beam and the horizontal link so as to pivot about its pivot point in the main beam , as well as via the parallel strut and the outer link, hereinafter referred to as the knee link , to adjust the angular position of the crane arm relative to the main beam in the outer joint , - wherein a lifting yoke is pivotally journaled in the main beam , which for lifting and lowering the lifting boom is actuated by a lifting device , - wherein the horizontal link and the lifting yoke are mutually connected via a strut of a fixed length articulately connected to both of them, whereby the lifting yoke is slavishly brought along in the pivoting of the horizontal link under the action of the angle adjusting device , characterized in - that the lifting yoke forms a two-armed lever, which at one end is articulately connected to the lifting device at a pivot point and at an opposite end is articulately connected to the strut at a pivot point , and is pivotally mounted in the main beam via a pivot point located between the pivot points and , separate from the journaling of the main beam in the pillar . <EOS>