AS 22915.9 pdf download

AS 22915.9 pdf download.Industrial trucks—Verifcation of stability
1  Scope
This part of ISO 22915 specifies the tests for verifying the stability of counterbalanced trucks with masts when handling empty or laden freight containers of 6 m (20 ft) length and longer. It is applicable to these types of industrial trucks that are equipped with forks, a spreader, (top lift and side lift), or other load handling means applicable for container handling. This International Standard does not apply to trucks when handling a container which has a mobile centre of gravity (see ISO 3874).
5  Test condition
5.1  General See ISO 22915-1. The tests take into account the normal degree of eccentric loading of containers defined in ISO 3874. When handling empty containers with integral refrigeration unit (reefer), as specified in ISO 1496-2, account needs to be taken of the offset loading according to ISO 22915-20. 5.2  Prevailing wind The tests shall not be carried out in a prevailing wind that would significantly affect the test results.For tests 1 and 2 (see Table 1), the truck shall be positioned on the tilt table, so that the load axle C-C is parallel to the tilt axis X-Y of the tilt table. For tests 3, 4, and 5 (see Table 1), the truck shall be positioned on the tilt table in a turning position with line M-N parallel to the tilt axis X-Y of the tilt table. The steer wheel nearest to the tilt axis of the tilt table shall be parallel to the tilt axis. Point M is defined as the intersection of the longitudinal centre plane, A-A, of the truck with the projection of the pivot point of the articulated steer axle onto the tilt table. Point N indicates the centre point of the area of contact between the tilt table surface and the load wheel nearest the tilting axis. 5.5  Test load 5.5.1  General The test load shall consist of a load corresponding to the weight of the container and a load or force simulating the effect of the wind on the container. 5.5.2  Basic load The test load shall be equivalent to a container 2,90 m (9 ft 6 in) high (see ISO 668), in either the laden or unladen condition, with a mass equivalent to the rated load as specified by the manufacturer, acting through its centre of gravity. When using fork arms to handle containers, the test load shall act through the centre of gravity positioned 1 220 mm horizontally from the front face of the fork arm shank and at a height that corresponds to the midpoint of the height of a 2,90 m (9 ft 6 in) container. When using top lift, side lift, or other load handling means, the position of the centre of gravity shall be determined by the connection points to the test load, e.g. twist locks into the corner fittings.Where the load handling means can be adjusted laterally to the truck longitudinal centre line, ISO 22915-10 can apply. Where the load handling means has positional adjustment capability in the direction of the truck longitudinal centre line, other than mast tilt, the tests shall be carried out at both extremes of adjustment. 5.5.3  Wind force The effect of this force can be simulated in the tests by one or the other of the following methods: a) applying this force normal to the lateral tipping axis of the truck horizontally through the load centre of gravity; b) applying a vertical load, in addition to the test load, giving an equivalent moment to the wind force acting when the slope is at the required tilt angle as specified in the table of tests. 5.6  Lift height 5.6.1  Lift height for tests simulating stacking Test 1 (see Table 1) shall be conducted with the horizontal position of the load datum point (e.g. point E) unchanged when elevated from its lowered position [see Figure 3 a), b) and c)]. With the prescribed test load, set the mast vertical and perpendicular to the tilt table and then elevate to approximately 300 mm. Using the shank of the front face of the fork arm or load-engaging means, establish a point E [see Figure 3 a)], on the fork arms or load-engaging means having a fixed relationship to the centre of gravity of the test load. This point E shall be used to provide a reference datum F on the tilt table. When the mast is elevated, a new point F1 on the tilt table may occur [see Figure 3 b)]. By the following adjustments, this new point F1 can be returned to the original location of F [see Figure 3 c)]. Changes in the location of F1 shall be corrected by varying the tilt of the mast within the limits provided by the design of the truck.