EN581-2培训资料.pptVIP

Tilting chairs Apply for tilting chair with value ? and ? between 90° and 120°. Load the chair with 11 loading discs (10kg, ?350mm and 48mm thick) so that the disc are firmly settle against the back rest. Rocking chair Carry out test in most adverse floor surface (e.g. carpet, rubber) Load the chair with 8 loading discs against the chair back Rock the chair forwards as far as practicable until the back is vertical All to rock rearwards freely under gravity Reclining chairs with footrest Apply for reclining chair with ? 55° and and ? between 90 ° and 120 ° Load the back with 8 loading disc and 3 onto the foot rest at distance Z from the intersection of the seat and back Value Z ranged from 474mm to 194mm for ? from 0 ° to 60 ° Reclining chair without footrests Apply for reclining chair with ? 45° and and ? between 90° ° and 120 ° Load the back with 8 loading disc and 3 onto the front of the seat t at distance X from the intersection of the seat and back Value X ranged from 614mm to 314mm for ? from 0 ° to 60 ° BS EN 581 - 3:2007 Part 3: Mechanical safety requirements and test method for table Stability Stability Vertical static load Vertical static load Horizontal fatigue test Horizontal fatigue test * Sideways overbalancing for seating without arms Place stops against the feet on one side Apply 600N vertically at a point 60mm from the edge of the side nearest the stopped feet at the most adverse position likely to overbalance Apply 20N sideways force horizontal force outwards from the loaded point, maintain 5 sec Sideways overbalancing for seating with armrests Place stops against feet of one side. Apply 250N vertical load at a point 100mm to the side of the fore and aft centerline of the seat and between 175mm and 250mm forward to the rear edge of the seat. Apply 350N vertical force on the centerline of the armrest up to 40mm inwards from the outer edge of the arm at the most adverse position along its length Apply 20N horizontal force perpendicular to line joini