Multi-connecting-rod cast aluminum rear auxiliary frame

The invention discloses a multi-connecting-rod cast aluminum rear auxiliary frame which comprises a rear beam, a front beam and a longitudinal beam which are of an integrated cast structure. The spring arm mounting point is arranged on one side of the middle of the longitudinal beam, and an inclined strut used for assisting the spring arm mounting point in use is fixed between the rear beam and the longitudinal beam; the upper cross arm support is integrally arranged on the lower portion of the outer side of the longitudinal beam, the inclined struts are symmetrically arranged on the two sides of the rear beam, the inclined struts and the rear beam are combined to form an n-shaped structure, and a frame-shaped structure is formed among the rear beam, the longitudinal beam and the inclined struts. According to the multi-connecting-rod cast aluminum rear auxiliary frame, an n-shaped structure and a frame-shaped structure are applied, the contradiction between the requirement for high rigidity of a spring arm mo