Quick connection device, functional arm and robot

A quick connection device, comprising a sleeve configured to be connected with a first member to be connected and a moving assembly movably disposed in the sleeve along an axial direction of the sleeve, wherein the moving assembly comprises:

• a support base disposed in the sleeve;
• a mounting base, configured to be connected with a second member to be connected and movably disposed along the axial direction relative to the support base;
• a locking member, fixed to the mounting base and configured to cooperate with the support base to achieve a locking state and an unlocking state, and to restrict movement of the mounting base towards a direction away from the support base in the locking state and allow movement of the mounting base towards a direction away from the support base in the unlocking state;
• a limiting member, configured to restrict movement of the moving assembly in the sleeve when the mounting base is in an initial position corresponding to the locking state, and release limiting when the mounting base moves a preset distance towards the direction away from the support base, in order to allow the moving assembly to move out of the sleeve;
• and
• a travel limiting component, connected to the mounting base, and the travel limiting component is configured to restrict further movement of the mounting base relative to the support base when the mounting base moves a preset distance.