Automatic staircase handrail area overspeed device tensioner

The utility model relates to an automatic staircase handrail area overspeed device tensioner, tension wheel bracket (10) and slider (3) are connected through lock nut, slider (3) are equipped with direction slotted hole (11), slider (3) are fixed on truss top chord (1), install on tension wheel bracket (10) through the axle one by one bearing roller wheel (7), handrail area guide (2) with the bolt fastening on tension wheel bracket (10), tensioning pull rod (5) rear end is passed through the nut and is fixed on angle type spare (12) of tension wheel bracket (10) front end, tensioning pull rod (5) front end is followed bend lateral opening and tensioning pressure spring (4) of slider (3) in proper order and is passed. The utility model discloses welding tensioning support on the staircase chord member has been avoided to the effectual handrail area off tracking that prevents moves. 本实用新型涉及种自动扶梯扶手带张紧装置，张紧轮支架（10）和滑动件（3）通过锁紧螺母连接，滑动件（3）设有导向长圆孔（11），滑动件（3）固定在桁架上弦杆（1）上，托辊轮（7）通过轴逐个安装在张紧轮支架（10）上，扶手带导向件（2）用螺栓固定在张紧轮支架（10