An emergency unlocking device for a door system

Abstract

The invention discloses an emergency unlocking device for a door system. The emergency unlocking device for the door system comprises an assembled unlocking support, a resetting torsional spring, a lead screw, a slide way, a wedge block, a locking torsional spring, a nut assembly, a transmission rack, a motor, an air cylinder, an air cylinder support, a connecting assembly, a support frame, a linkage rack, a roller, an unlocking rotating shaft, a switch assembly, a retainer ring, an unlocking spring, an anti-friction ring, a buffer head and a pull rod. By the emergency unlocking device for the door system, the door system can be ensured to be unlocked automatically under the condition that the door system does not have electricity or gas, so that a door leaf can be unlocked effectively under the emergency condition, and remote electric unlocking can be realized. The emergency unlocking device for the door system has few parts, is simple in structure and convenient to assemble, and has good application prospect.

Description

technical field [0001] The invention relates to the technical field of door system components, in particular to an emergency unlocking device for a door system. Background technique [0002] At present, the door system emergency unlocking devices used in door systems such as rail transit vehicles, bus doors, and rail transit screen doors have complex structures, high costs, difficult maintenance, and no remote unlocking function. For example, in the emergency unlocking device of the existing rail transit vehicle door system, the mechanical structure of the wire rope is used for unlocking. In some applications, due to the limitations of the working conditions and installation conditions, the wire rope unlocking device cannot meet the design requirements. The emergency unlocking device has many parts, complex structure, high cost, and is difficult to maintain; it cannot be unlocked through the electrical unit, and the emergency unlocking function of the door must be realized t...

AI Technical Summary

Problems solved by technology

[0002] At present, the door system emergency unlocking devices used in door systems such as rail transit vehicles, bus doors, and rail transit screen doors have complex structures, high costs, difficult maintenance, and no remote unlocking function

For example, in the emergency unlocking device of the existing rail transit vehicle door system, the mechanical structure of the wire rope is used for unlocking. In some applications, due to the limitations of the working conditions and installation conditions, the wire rope unlocking device cannot meet the design requirements. The emergency unlocking device has many parts, complex structure, high cost, and is difficult to maintain; it cannot be unlocked through the electrical unit, and the emergency unlocking function of the door must be realized through manual operation; moreover, it cannot be unlocked by remote control, and it has certain problems when using it. limitation

Images