Elastic limit locator

The utility model relates to an elastic positioning and limiting device which comprises a positioning body. The utility model is characterized in that the elastic positioning and limiting device also comprises a pedestal (1), a rotating limit double-ear (2), a torque spring (3) and a single-ear pedestal (4), wherein the rotating limit double-ear (2) is connected with the positioning pedestal (1) by a pin (6) to realize the horizontal rotation of 180 DEG. The torque spring (3) is fixed between the single-ear pedestal (4) of a positioning device and the rotating limit double-ear (2) by a bolt pin (8). The elastic positioning and limiting device of the utility model horizontally turns in a large angle of 180 DEG. The elasticity of each positioning device is the same, which decreases the elastic unevenness of a contact system, improves the elasticity and reception characteristic of the contact system, enhances the operation speed of an engine and guarantees the driving safety.