Speed detection device for passenger conveying device

The invention relates to a speed detection device for a passenger conveying device. A speed detection device for a passenger conveying device includes: an encoder including a rotating shaft; the first transmission wheel is used for being connected to a main shaft of the passenger conveying device in an anti-torsion mode; the second transmission wheel is connected to a rotating shaft of the encoder in an anti-torsion manner; the flexible transmission part is constructed to be annular and connected to the first transmission wheel and the second transmission wheel, the flexible transmission part is constructed to transmit rotation of the first transmission wheel to the second transmission wheel in proportion, and the encoder is constructed to detect the rotation speed and/or the rotation direction of the first transmission wheel according to the rotation of the second transmission wheel. 本发明涉及用于乘客输送装置的速度检测装置。一种用于乘客输送装置的速度检测装置包括：编码器，其包括转轴；第一传动轮，其用于抗扭转地连接到乘客输送装置的主轴；第二传动轮，其抗扭转地连接到编码器的转轴；和挠性传动件，其构造成环形并且连接到第一传动轮和第二传动