The invention discloses a novel mounting and positioning apparatus used for a
transformer. The novel mounting and positioning apparatus is used for guiding and positioning the
transformer (1) in a process when the
transformer (1) is mounted in a compartment apparatus (9) which has a
square cross section; the novel mounting and positioning apparatus comprises an inclined plane guiding frame
assembly (91) mounted in the compartment apparatus (9), and a positioning and jointing apparatus (3) which is fixedly connected with the transformer (1) through a fastening part (30); the inclined plane guiding frame
assembly (91) comprises four inclined plane guiding frames which are hinged on the corner plates (913) which are fixedly arranged at the four corners of the compartment apparatus (9); each inclined plane guiding frame comprises a rotary arm part (911) which is hinged with the corresponding corner plate (913) through a hinged part (914), and an inclined plane part (912) which is fixedly connected with the rotary arm part (911) and is inclined outwardly from the bottom up; and the positioning and jointing apparatus (3) comprises a square roller supporting frame (32).