BS ISO 22915-7:2016 download.Industrial trucks — Verification of stability Part 7: Bidirectional and multidirectioflal trucks.
This part of ISO 22915 specifies the tests for verit’ing the stability of bidirectional and multidirectional trucks with tilting or non-tilting mast or fork arms.
It Is also applicable to trucks operating under the same conditions when equipped with load-handling attachments.
2 Normative references
The following documents, in whole or in part, are normatively referenced in BS ISO 22915-7 and are indispensable for its applicatian. For dated references, only the edition cited applies. For undated references, the Latest edition of the referenced document (including any amendments) applies.
ISO 5053-I, Industrial trucks — Terminology and ciassifi cation — Part!: 7)’pes of industrial trucks ISO 22915-1 Industrial trucks — Verification of stability — Part 1: General
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 50534 and 1St) 22915.1 apply.
4 Test conditions
4.1 General
The test conditions shall be in accordance with ISO 22915-1.
4.2 PosItion o[the truck on the tilt table
4.2.1 Load/steer axle and drive/steer axle
The toad/steer axle and drive/steer axle are defined by Figure 1.
4.2.2 Tests 1 to S
The truck shall be positioned on the tilt table so that Its drive/steer axle, B—B, and outrigger (load/steer)
axle, C—C, are parallel to the tilt axis. X—Y, of the tilt table. See Table 1,
4.2.3 Tests 6 to 9
The truck shall be positioned on the tilt table with the line, M-N. or the outrigger (load/steer) axle, C—C,
parallel to the tilt axis, X-Y. oIthe tilt table. See Table 1.
Point M Is defined as follows.
a) For trucks with a sprung castor 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 centreiine of the drive wheel width.
b) For trucks with drive/steer wheels in an articulated frame: point M shall be the vertical projection onto the tilt table of the point of intersection between the articulated frame axle and the lateral axis of the articulated frame.
c) 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 centroline of the drive/steer axle and the centreline of the drive wheel width.
As shown in Table 1. point N is defined as the centre paint of the area of contact between the tilt table surface and the load wheel nearest to the tilt axis, X—Y, of the tilt table.
4.3 Datum point posItions
4.3.1 General
Test 1 may be conducted with the horizontal position of the load datum point, E, unchanged when elevated from its lowered position as shown in FIgure 2.
With the prescribed test load, set the mast vertical and then elevate to approximately 300 mm above the tilt table. With the shank of the front face of the fork arm set vertical, establish point E, as shown in Figure 2 a) and b). on the fork arms or fork carrier having a fixed relationship to the centre of gravity of
the test load. Point E shall be used to provide a reference datum point. F. on the tilt table. When the mast Is elevated, a new point, Ft. on the tilt table might occur, as shown in Figure 2 c) and d). This new point may be returned to the original location of F, as shown in Figure 2 e) and f).
For trucks with tilting masts, changes in the location of Ft may be corrected by varying the tilt ol the mast within the limits provided by the design of the truck. See Flguie 2 a). c) and e).
For trucks with non-tilting masts, the location of Ft Is subject to regional requirements (see 422).
4.3.2 Regional requirements for trucks with non-tilting masts
4.3 2.1 North America
The location of Ft shall not be corrected, Only correction by varying the mast tilt is permissible.
4.322 All other regIons
Adjustments In the fork arms or fork carrier tilt, fork carrier retraction (where provided) or retraction of the mast may be used to correct for changes in the location of point Ft. within the limits provided by the design of the truck. See Figure 2 b), d) and 1).
4.4 lift height for tests simulating travel
For tests simulating travel (Tests 5,6 and 7), the upper face of the fork arms, measured at the heel of the fork arm, shall be positioned 300 mm above the tilt table for trucks with a rated capacity less than or equal to lOt, and 500 mm for trucks with a rated capacity of greater than lot.