GB/T 26949.21-2023Industrial trucks - Verification of stability - Part 21: Order-picking trucks with operator position elevating above 1 200 mm (English PDF)

Foreword

This document was drafted in accordance with the rules provided in GB/T 1.1-2020 Directives

for Standardization - Part 1: Rules for the Structure and Drafting of Standardizing Documents.

This document is Part 21 of GB/T 26949 Industrial Trucks - Verification of Stability. GB/T

26949 has issued the following parts:

---Part 1: General;

---Part 2: Counterbalanced Trucks with Mast;

---Part 3: Reach and Straddle Trucks;

---Part 4: Pallet Stackers, Double Stackers and Order-picking Trucks with Operator

Position Elevating up to and Including 1,200 mm Lift Height;

---Part 5: Single-side-loading Trucks;

---Part 7: Bidirectional and Multidirectional Trucks1);

---Part 8: Additional Stability Test for Trucks Operating in the Special Condition of

Stacking with Mast Tilted Forward and Load Elevated;

---Part 9: Counterbalanced Trucks with Mast Handling Freight Containers of 6 m Length

and Longer;

---Part 10: Additional Stability Tests for Trucks Operating in the Special Conditions of

Stacking with Load Laterally Displaced by Power;

---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: Counterbalanced Trucks with Articulated Steering;

---Part 16: Pedestrian-propelled Trucks;

---Part 17: Towing Tractors, Burden and Personnel Carriers;

1) Currently being revised. After revision, the title of the document will be adjusted to Industrial Trucks -

Verification of Stability - Part 7: Bidirectional and Multidirectional Trucks.

---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 1,200 mm;

---Part 22: Lateral- and Front-stacking Trucks with and without Elevating Operator

Position;

---Part 24: Slewing Variable-reach Rough-terrain Trucks.

This document serves as a replacement of GB/T 26949.21-2016 Industrial Trucks - Verification

of Stability - Part 21: Order-picking Trucks with Operator Position Elevating above 1,200 mm.

In comparison with GB/T 26949.21-2016, apart from structural adjustments and editorial

modifications, the main technical changes are as follows:

---ISO 5053 is modified into ISO 5053-1 (see Chapter 1; Chapter 1 of Version 2016);

---The definition of "restricted steering" is modified (see 3.3; 3.3 of Version 2016);

---The requirements for casters in Test 2, Test 3, Test 4 and Test 5 are added (see 4.2.3);

---The stipulations of Point M of "trucks with rigidly supported single or tandem casters"

are modified [see 4.2.3 d); 4.2.3 d) of Version 2016];

---The description and statement of "operating speed" are modified (see Footnote b and c

of Table 1; Footnote b and c of Table 1 of Version 2016);

---The requirements for operating speed during the test are added (see Footnote g of Table

1);

---The Figure "Vehicle Position on Tilted Platform" is modified (see Table 1; Table 1 of

Version 2016).

This document identically adopts ISO 22915-21:2019 Industrial Trucks - Verification of

Stability - Part 21: Order-picking Trucks with Operator Position Elevating above 1,200 mm.

Please be noted that certain content of this document may involve patents. The institution

issuing this document does not undertake the responsibility of identifying these patents.

This document was proposed by China Machinery Industry Federation.

This document shall be under the jurisdiction of National Technical Committee on Industrial

Trucks of Standardization Administration of China (SAC/TC 332).

The drafting organizations of this document: NOBLELIFT Intelligent Equipment Co., Ltd.;

Beijing Materials Handling Research Institute Co., Ltd.; China Hoisting & Conveying

Equipment Quality Detection and Inspection Center (CHCIC); Hangcha Forklift Co., Ltd.;

Anhui Heli Co., Ltd.; Lonking (Shanghai) Forklift Co., Ltd.; Zhejiang Zhongli Machinery Co.,

Introduction

Stability is one of the important indicators for assessing the safety of industrial trucks. High-

lift order-picking trucks whose operator position can be elevated are mainly used in high-rise

rack warehouses. In recent years, due to the increase in the demand for order-picking from high-

rise racks, the domestic sales of this type of industrial trucks has also been increasing. It is of

great significance to standardize the stability verification requirements, achieve integration with

international standards, improve product's technical level and quality, and ensure operation

safety.

GB/T 26949 Industrial Trucks - Verification of Stability aims to establish the stability of

industrial trucks defined in ISO 5053-1 and its verification method. GB/T 26949 is proposed to

consist of the following parts:

---Part 1: General;

---Part 2: Counterbalanced Trucks with Mast;

---Part 3: Reach and Straddle Trucks;

---Part 4: Pallet Stackers, Double Stackers and Order-picking Trucks with Operator

Position Elevating up to and Including 1,200 mm 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: Counterbalanced Trucks with Mast Handling Freight Containers of 6 m Length

and Longer;

---Part 10: Additional Stability Tests for Trucks Operating in the Special Conditions of

Stacking with Load Laterally Displaced by Power;

---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: Counterbalanced Trucks with Articulated Steering;

---Part 16: Pedestrian-propelled Trucks;

Industrial Trucks - Verification of Stability - Part 21: Order-

picking Trucks with Operator Position Elevating above

1,200 mm

1 Scope

This document specifies the test method for verifying the stability of order-picking trucks with

operator position elevating above 1,200 mm (as defined in ISO 5053-1).

This document is applicable to the same type of trucks equipped with forks, platforms and / or

integral attachments under normal operating conditions.

This document does not apply to trucks equipped with load handling devices capable of moving

sideways or rotating away from the longitudinal center plane of the trucks.

2 Normative References

The contents of the following documents constitute indispensable clauses of this document

through the normative references in the text. In terms of references with a specified date, only

versions with a specified date are applicable to this document. In terms of references without a

specified date, the latest version (including all the modifications) is applicable to this document.

ISO 5053-1 Industrial Trucks - Vocabulary - Part 1: Types of Industrial Trucks

NOTE: GB/T 6104.1-2018 Industrial Trucks - Terminology and Classification - Part 1: Types of

Industrial Trucks (ISO 5053-1:2015, IDT)

ISO 22915-1 Industrial Trucks - Verification of Stability - Part 1: General

NOTE: GB/T 26949.1-2020 Industrial Trucks - Verification of Stability - Part 1: General (ISO

22915-1:2016, IDT)

3 Terms and Definitions

What is defined in ISO 5053-1 and ISO 22915-1, and the following terms and definitions are

applicable to this document.