The following parts have been issued or are planned to be issued under the general title of GB/T 26949 Industrial trucks - Verification of stability:
——Part 1: General;
——Part 2: Counterbalance trucks with mast;
——Part 3: Reach and straddle truck;
——Part 4: Pallet stackers, double stackers and order-picking trucks with operator position elevating up to and including 1,200mm lift height;
——Part 5: single-side-loading trucks;
——Part 7: Bidirectional and multidirectional trucks;
——Part 8: Additional stability test for trucks operating in the special condition of stacking with mast tilted forward and load elevated;
——Part 9: Counterbalance trucks with mast handling freight containers of 6 m length and longer;
——Part 10: Additional stability test for trucks operating in the special condition of stacking with load laterally displaced by powered devices;
——Part 11: Industrial variable-reach trucks;
——Part 12: Industrial variable-reach trucks handling freight containers of 6 m length and longer;
——Part 13: Rough-terrain trucks with mast;
——Part 14: Rough-terrain variable-reach trucks;
——Part 15: Counterbalance trucks with articulated steering;
——Part 16: Pedestrian-propelled trucks;
——Part 17: Cargo and personnel carriers;
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——Part 20: Additional stability test for trucks operating in the special condition of offset load, offset by utilization;
——Part 21: Order-picking trucks with operator position elevating above 1,200mm;
——Part 22: Lateral- and front-stacking trucks with and without elevating operator position lifting operator position;
——Part 23: Industrial and RTT lorry-mounted trucks;
——Part 24: Rough-terrain rotary variable-reach trucks.
This is Part 15 of GB/T 26949.
This part is developed in accordance with the rules given in GB/T 1.1-2009.
The part, by translation, is identical to ISO 22915-15:2013 Industrial trucks - Verification of stability - Part 15: Counterbalanced trucks with articulated steering.
The Chinese documents consistent and corresponding with the normative international documents in this part are as follows:
——GB/T 6104-2005 Powered industrial trucks - Terminology (ISO 5058:1987, IDT);
——GB/T 26949.1-2012 Industrial trucks - Verification of stability - Part 1: General (ISO 22915-1:2008, IDT).
The following editorial changes have been made with respect to ISO 22915-15:2013:
——the illustration of “Truck position on tilt table (Test 2)" in Table 1 of the text is corrected due to error.
This part was proposed by China Machinery Industry Federation.
This part is under the jurisdiction of SAC/TC 332 National Technical Committee on Industrial Trucks Standardization Administration of China.
Industrial trucks - Verification of stability - Part 15: Counterbalanced trucks with articulated steering
1 Scope
This part of GB/T 26949 specifies the tests for verifying the stability of counterbalanced fork-lift trucks with articulating steering and with mast, equipped with fork arms or load-handling attachments.
It is not applicable to trucks with retractable devices such as a retractable mast or fork.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 5053 Powered industrial trucks - Terminology
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 5053 and ISO 22915-1 apply.
4 Test conditions
4.1 General
See ISO 22915-1.
4.2 Truck position on tilt table
4.2.1 Load and steer axles
The load and steer axles are defined by Figure 1.
Keys:
A-A——the longitudinal centre plane of truck;
B-B——the steel axle;
C-C——the load axle.
Figure 1 Load and steer axles
4.2.2 Test 1
The truck shall be positioned on the tilt table so that the load axle is parallel to the tilt axis, X-Y, of the tilt table, with the steering on full lock. See Table 1.
4.2.3 Test 2
The truck shall be positioned on the tilt table so that the load axle and the steel axle are parallel to X-Y. See Table 1.
4.2.4 Test 3, 4 and 5
The lateral stability tests according to Table 1 shall be conducted on the side of the truck which is the least stable.
The truck shall be positioned on the tilt table in a turning position with line M-N parallel to X-Y. See Table 1.
Point M is defined as the centre point of the area of contact between the tilt table surface and the rear wheel nearest to the tilt axis, X-Y, of the tilt table.
Point N is defined as the centre point 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
Test 1 shall be conducted with the horizontal position of the load datum point, E, unchanged when elevated from its lowered position, as shown in Figure 2.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Test conditions
5 Verification of stability
