Stretching device in rectangle is quick parallel

The utility model belongs to the technical field of elongated cavity product manufacturing. A stretching device in rectangle is quick parallel, includes: the screw rod, the left end portion of screw rod is equipped with the connector, outer support body, interior supporter, the right -hand member of interior supporter rotates to be connected connector and interior supporter are along with the screw rod side -to -side movement, the end locating plate, end locating plate middle part is equipped with the through -hole that makes things convenient for the screw rod to pass, with hollow structure'sbody, during interior supporter and screw rod insert the inner chamber of body from the left end, the right -hand member portion of body be equipped with with screw rod complex screw, the end locating plate passes through the right -hand member of bolted connection at the body, the both sides face all is equipped with strip -shaped through groove around the body, and outer support body places instrip -shaped through groo