Indoor Gymnasium Folding Bleachers with Plastic Bleacher Seats

Retractable bleachers or telescopic bleachers, is a kind of automatic stretchable seating system used in small floor space.
When bleachers are stretched out, the outstretched chairs on the steps enable spectators to sit on comfortably and enjoy a visual feast. As the bleacher system is contracted as a drawer, it saves space for you to plan other activities. Retractable bleachers makes most of the limited room and satisfy various seating needs under different situations

Manual
Wheel bed
115x50x3mm bending plates
Frame beam
50x3mm steel
Post beam 
80x40x2 mm, 100x50x3mm steel
C-shape beam
180x50x3.2mm cold bent plate
Oblique lever
50×2 mm steel
Pedal
T=18mm laminated splint or plywood
Casters
127×32 mm polyurethane
Seats
High back foldable seats with/ without handrail, blow mode HDPE
Support wheels
30×30 mm nylon
Lock device
T= 4 steel plate
Electric
Wheel bed
115x50x3mm bending plates
Frame beam
50×3 mm steel
Post beam
80x40x2 mm, 100x50x3mm steel
C- shaped beam
180x50x3.2 mm cold bent plates
Oblique lever
50×2 mm steel
Motor
0.55 kw, 4 pole, 3 phase motor
Driving wheels
127x65mm polyurethane iron core wheel
Pedal
T=18mm laminated splint or plywood
Casters
127×32 mm polyurethane
Seats
High back foldable seats with/ without handrail, blow mode HDPE
Support wheels
30×30 mm nylon
Reducer
Cycloid needle round type reduce i=187