Rocket heat-proof layer sleeving tool

A sleeve tool for a heat-proof layer of a rocket belongs to the field of rocket manufacturing and assembling and comprises a central pull shaft, a fixing plate, an upper locking plate, a guide column and a lower supporting locking plate. One end of the central pull shaft is fixedly connected with the lower support locking plate; a first positioning locking pin is arranged on the lower supporting locking plate, the rocket cabin section is placed on the lower supporting locking plate, and an internal metal piece of the rocket cabin section is positioned and locked through the first positioning locking pin; one end of the guide column is fixedly connected with the lower support locking plate; the other end of the central pull shaft penetrates through an upper locking plate, a second positioning locking pin is arranged on the upper locking plate, and an external heat-proof layer of the rocket cabin section is positioned and locked through the second positioning locking pin; the other end of the center pull shaft