GB/T 26949.1-2020 English PDF (GB/T26949.1-2020)

GB/T 26949.1-2020: Industrial trucks - Verification of stability - Part 1: General
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GB/T 26949.1-2020
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 53.060
J 83
GB/T 26949.1-2020 / ISO 22915-1:2016
Replacing GB/T 26949.1-2012
Industrial trucks - Verification of stability -
Part 1: General
(ISO 22915-1:2016, IDT)
ISSUED ON: NOVEMBER 19, 2020
IMPLEMENTED ON: JUNE 01, 2021
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3 
1 Scope ... 6 
2 Normative references ... 7 
3 Terms and definitions ... 7 
4 Truck stability tests ... 10 
References ... 15 
Foreword
The following parts have been released or are to be released for GB/T 26949,
“Industrial trucks - Verification of stability”:
-- 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 powered devices;
-- Part 11: Industrial variable-reach trucks;
-- Part 12: Industrial variable-reach trucks with mast 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: Burden and personnel carriers;
-- 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 1200
mm;
-- Part 22: Lateral-and front-stacking trucks with and without elevating
operator position;
-- Part 23: Truck-mounted forklift;
-- Part 24: Rough-terrain rotary variable-reach trucks.
This Part is Part 1 of GB/T 26949.
This Part was drafted in accordance with the rules given in GB/T 1.1-2009.
This Part replaces GB/T 26949.1-2012, “Industrial trucks - Verification of
stability - Part 1: General”; compared with GB/T 26949.1-2012, the main
technical changes are as follows:
-- Delete “cargo and personnel vehicles” (see Chapter 1 of version 2012);
-- Modify “normative references” (see Chapter 2; Chapter 2 of version 2012);
-- Add “(3.1, 3.2)” (see 3.3);
-- Add notes (see 3.4, 3.5);
-- Modify the expression of maintaining the initial position of the truck on the
tilt table (see 4.3.2; 4.3.2 of version 2012).
The translation method that is used in this Part is equivalent to ISO 22915-
1:2016 “Industrial trucks - Verification of stability - Part 1: General”.
The documents of our country that have a consistent correspondence with the
international documents that are referenced in this Part are as follows:
-- GB/T 6104.1-2018, Industrial trucks - Terminology and classification - Part
1: Types of industrial trucks (ISO 5053-1:2015, IDT)
-- GB/T 8591-2000, Earth-moving machinery - Seat index point (eqv ISO
5353:1995)
-- GB/T 8420-2011, Earth-moving machinery - Physical dimensions of
operators and minimum operator space envelope (ISO 3411:2007, IDT)
This Part was proposed by China Machinery Industry Federation.
This Part shall be under the jurisdiction of National Technical Committee of
Industrial Trucks (SAC/TC 332).
The drafting organizations of this Part: Hangcha Group Co., Ltd., Beijing
Materials Handling Research Institute, Anhui Heli Co., Ltd., Noblelift Intelligent
Equipment Co., Ltd., Ruyi Joint Stock Co. Ltd., Longhe Intelligent Equipment
Industrial trucks - Verification of stability -
Part 1: General
1 Scope
This Part of GB/T 26949 specifies the stability that is related to the safety of
industrial trucks which are defined by ISO 5053-1, and the verification methods.
The industrial trucks which are involved in this Part refer to self-propelled or
pedestrian-propelled trucks with wheels, except for trucks running on tracks.
These trucks can be controlled by the operator, or unmanned, which are used
for handling, towing, pushing, lifting, stacking or layer stacking in the shelf.
This Part specifies the basic test specifications and requirements for the
verification of stability of industrial trucks (hereinafter referred to as “trucks”).
This Part applies to the following truck types and their specific conditions:
a) Counterbalanced trucks with mast which are specified in ISO 22915-2;
b) Reach and straddle trucks which are specified in ISO 22915-3;
c) Pallet stackers, double stackers and order-picking trucks with operator
position elevating up to and including 1 200 mm lift height, which are
specified in ISO 22915-4;
d) Single-side-loading trucks which are specified in ISO 22915-5;
e) Bidirectional and multidirectional trucks which are specified in ISO 22915-
7;
f) Additional stability test for trucks operating in the special condition of
stacking with mast tilted forward and load elevated, which are specified in
ISO 22915-8;
g) Counterbalanced trucks with mast handling freight containers of 6 m (20
ft) length and longer, which are specified in ISO 22915-9;
h) Additional stability test for trucks operating in the special condition of
stacking with load laterally displaced by powered devices, which are
specified in ISO 22915-10;
i) Industrial variable-reach trucks, which are specified in ISO 22915-11;
< Trucks other than variable-reach and rough-terrain trucks> meet the following
operating conditions:
a) The fork is basically level; the stacking operation is carried out on a solid,
smooth, level and paved road;
b) Perform the operation when the load centroid is approximately in the
longitudinal median plane of the truck;
c) The mast or fork is tilted backward (if possible); the load is in a low
(operating) position; it operates on a solid, smooth, level and paved road;
for forward-moving trucks, the mast or fork is completely retracted back;
d) The load/operator is running or operating in the lifting state (the truck is
specially designed for this operating condition).
3.2 Normal operating conditions
< Variable-reach and rough-terrain trucks> meet the following operating
conditions:
a) Perform the stacking operation on a solid, smooth, level and paved road
under the combined state when the cantilever crane lifts/extends and fork
is basically level;
b) Perform the operation when the load centroid is approximately in the
longitudinal median plane of the truck;
c) For trucks with mast, operate the load in the lifting state when the mast is
tilted back not more than 10° and the load centroid is not more than 600
mm backward;
d) Operate the load in the lifting state when the fork is tilted backward;
e) The mast or fork of the rough-terrain truck is tilted backward, and the load
is in a low (operating) position; it runs on an unleveled ground or a
damaged surface; if possible, any forward/telescoping mechanism shall
be completely retracted back.
3.3 Operating conditions other than normal
When the operating conditions are different from those specified in 3.1 or 3.2,
the truck shall meet one of the following conditions:
a) Different specific conditions that are stipulated by relevant applicable
standards (such as trucks operating in the special conditions of stacking
with load laterally displaced by powered devices or offset load, offset by
Notes:
M-N -- tilt axis that represents the truck.
Figure 2 -- Tilt axis
3.6 Tip-over
The truck loses stability and tips over.
Note: It is not regarded as tip-over when one or more wheels leave the tilt table,
or when the frame contacts the tilt table.
4 Truck stability tests
4.1 Test requirements
The stability of the truck shall be verified by one of the following test methods.
If the truck passes all the tests without tipping over or meets the requirements
through calculations, it is considered stable.
When comparing the calculated value and the test value, the test value is
considered to be the true value of stability.
4.2 Verification steps
4.2.1 Operation and test criteria for tilt table
The truck shall be placed on the tilt table according to the conditions that are
specified in the relevant parts of GB/T 26949. During each test, the tilt table
shall be smoothly tilted to the specified inclination.
For all specified tests, when the tilt table reaches the required inclination, the
truck shall not tip over.
In addition to trucks handling freight containers of 6 m length and longer, one
or more wheels are allowed to leave the tilt table, or part of the frame is allowed
to contact the tilt table. If this happens, the truck is allowed to re-stabilize in the
new position or to tip over without external restraints.
Before the moment of tip-over, the safety measures against tip-over shall not
have any restraint effect on the truck.
4.2.2 Calculation
Through calculation, it can be determined whether the stability value meets the
regulations.
GB/T 26949.1-2020
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 53.060
J 83
GB/T 26949.1-2020 / ISO 22915-1:2016
Replacing GB/T 26949.1-2012
Industrial trucks - Verification of stability -
Part 1: General
(ISO 22915-1:2016, IDT)
ISSUED ON: NOVEMBER 19, 2020
IMPLEMENTED ON: JUNE 01, 2021
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3 
1 Scope ... 6 
2 Normative references ... 7 
3 Terms and definitions ... 7 
4 Truck stability tests ... 10 
References ... 15 
Foreword
The following parts have been released or are to be released for GB/T 26949,
“Industrial trucks - Verification of stability”:
-- 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 powered devices;
-- Part 11: Industrial variable-reach trucks;
-- Part 12: Industrial variable-reach trucks with mast 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: Burden and personnel carriers;
-- 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 1200
mm;
-- Part 22: Lateral-and front-stacking trucks with and without elevating
operator position;
-- Part 23: Truck-mounted forklift;
-- Part 24: Rough-terrain rotary variable-reach trucks.
This Part is Part 1 of GB/T 26949.
This Part was drafted in accordance with the rules given in GB/T 1.1-2009.
This Part replaces GB/T 26949.1-2012, “Industrial trucks - Verification of
stability - Part 1: General”; compared with GB/T 26949.1-2012, the main
technical changes are as follows:
-- Delete “cargo and personnel vehicles” (see Chapter 1 of version 2012);
-- Modify “normative references” (see Chapter 2; Chapter 2 of version 2012);
-- Add “(3.1, 3.2)” (see 3.3);
-- Add notes (see 3.4, 3.5);
-- Modify the expression of maintaining the initial position of the truck on the
tilt table (see 4.3.2; 4.3.2 of version 2012).
The translation method that is used in this Part is equivalent to ISO 22915-
1:2016 “Industrial trucks - Verification of stability - Part 1: General”.
The documents of our country that have a consistent correspondence with the
international documents that are referenced in this Part are as follows:
-- GB/T 6104.1-2018, Industrial trucks - Terminology and classification - Part
1: Types of industrial trucks (ISO 5053-1:2015, IDT)
-- GB/T 8591-2000, Earth-moving machinery - Seat index point (eqv ISO
5353:1995)
-- GB/T 8420-2011, Earth-moving machinery - Physical dimensions of
operators and minimum operator space envelope (ISO 3411:2007, IDT)
This Part was proposed by China Machinery Industry Federation.
This Part shall be under the jurisdiction of National Technical Committee of
Industrial Trucks (SAC/TC 332).
The drafting organizations of this Part: Hangcha Group Co., Ltd., Beijing
Materials Handling Research Institute, Anhui Heli Co., Ltd., Noblelift Intelligent
Equipment Co., Ltd., Ruyi Joint Stock Co. Ltd., Longhe Intelligent Equipment
Industrial trucks - Verification of stability -
Part 1: General
1 Scope
This Part of GB/T 26949 specifies the stability that is related to the safety of
industrial trucks which are defined by ISO 5053-1, and the verification methods.
The industrial trucks which are involved in this Part refer to self-propelled or
pedestrian-propelled trucks with wheels, except for trucks running on tracks.
These trucks can be controlled by the operator, or unmanned, which are used
for handling, towing, pushing, lifting, stacking or layer stacki...