AS ISO 22915.21:2021 Industrial trucks一Verification of stability Part 21: Order-picking trucks with operator position elevating above 1 200 mm.
4.2.3 Tests2, 3,4and5
The truck shall be positioned on the tilt table with the line, M—N, parallel to the tilt axis, X—Y, of the tilt table. See Table 1.
in all positions, the castor wheel(s) shall be turned away from X-Y to the orientation that produces minimum stability.
Point M is the point located on the drive/steer axle end of the truck and defined as follows.
a) For trucks with a single drive (steer) wheel: point M shall be the vertical projection onto the tilt table of the point of intersection between the centreline of the drive/steer axle and the centreline of the drive wheel width.
b) For trucks with a drive/steer axle in an articulating frame articulated in the centre plane of the truck: point M shall be the vertical projection onto the tilt table of the point of intersection between the lateral axis of the articulating frame and the centre plane, A—A, of the truck.
c) For trucks with dual drive (steer) wheels: point M shall be the vertical projection onto the tilt table of the point of intersection between the centreline of the drive/steer axle and the centre plane, A—A, of the truck.
d) For trucks with a single or dual non-sprung castor wheel: point M shall be the vertical projection onto the tilt table of the point of intersection between the centreline of the castor wheel axle and the centreline of the castor wheel width.
e) For trucks with non-articulated, non-sprung castors or wheels and a non-articulated drive wheel:
1) for the non-sprung castor or wheel, point M shall be the vertical projection onto the tilt table of the point of intersection between the centreline of the castor or wheel axle and the centreline of the castor or drive wheel width, with the non-sprung castor or wheel being positioned with the centreline of the castor wheel axle nearer to the centre plane of the truck;
for the non-articulated drive wheel, point M shall be the vertical projection onto the tilt table of the point of intersection between the centreline of the drive wheel axle and the centre line of the drive wheel width.
f) For trucks with a sprung castor or wheel: point M shall be the vertical projection onto the tilt table of the point of intersection between the centreline of the drive wheel axle and the centreline of the drive wheel width.
As shown in Table 1. point N is defined as the centre point of the area of contact between the tilt table surface and the front load wheel closest to the tilt axis, X—Y, of the tilt table.
4.3 Lift height
Lift heights for tests shall be measured from the tilt table to the upper-most point of the load carrying surface.
5 Verification of stability
The stability shall be verified in accordance with Table 1.AS ISO 22915.21 pdf download.