Shield tail escape device for shield tunneling machine

The utility model discloses a shield tail escape device for a shield tunneling machine, which comprises a shell, an adsorption device, a fixing device, a fixing device and a driving device, and is characterized in that the adsorption device is embedded on the surface of the shell and is used for fixing the escape device on the shield tail of the shield tunneling machine; the electric heating device is arranged in the shell and used for heating the local area of the shield tail of the shield tunneling machine; the temperature control devices are arranged on the two sides of the electric heating device and used for measuring whether a proper temperature is reached or not and regulating and controlling the heating condition; according to the utility model, fewer accessories are used, the shield tail part of the shield tunneling machine is heated and cooled in a proper temperature interval to cause thermal expansion and cold contraction to generate deformation, and a gap is formed between the shield tail part and