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GB/T 26949.9-2018 PDF in English


GB/T 26949.9-2018 (GB/T26949.9-2018, GBT 26949.9-2018, GBT26949.9-2018)
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GB/T 26949.9-2018: PDF in English (GBT 26949.9-2018)

GB/T 26949.9-2018
Industrial trucks--Verification of stability--Part 9. Counterbalanced trucks with mast handling freight containers of 6 m length and longer
ICS 53.060
J83
National Standards of People's Republic of China
Replace GB/T 26561-2011
Industrial vehicle stability verification - Part 9. Handling
6m and above length freight containers
Counterbalanced forklift
Industrialtrucks-Verificationofstability-Part 9.Counterbalancedtrucks
(ISO 22915-9.2014, IDT)
Published on.2018-07-13
Implementation of.2019-02-01
State market supervision and administration
China National Standardization Administration issued
Content
Foreword III
1 range 1
2 Normative references 1
3 Terms and Definitions 1
4 working conditions 2
4.1 Overview 2
4.2 Container part lift 2
5 Test conditions 2
5.1 Overview 2
5.2 Prevailing wind 2
5.3 Wind 2
5.4 Position of the vehicle on the inclined platform 3
5.5 Test load 4
5.6 lifting height 4
6 Stability verification 6
7 mark 6
Foreword
GB/T 26949 "Industrial Vehicle Stability Verification" has or plans to release the following parts.
--- Part 1. General;
---Part 2. Counterbalanced forklift;
--- Part 3. Forward and legged forklifts;
--- Part 4. Pallet stacker, double stacker and picking truck with lifting position of not more than 1200mm;
--- Part 5. Side forklifts (one side);
--- Part 7. Two-way and multi-directional operation of the forklift;
--- Part 8. Additional stability tests for stacking operations under gantry forward and load lift conditions;
---Part 9. Counterbalanced forklifts carrying freight containers of 6m and longer lengths;
--- Part 10. Additional stability tests for stacking operations under lateral load conditions of power units;
--- Part 11. Telescopic forklift;
--- Part 12. Telescopic forklifts carrying freight containers of 6m and longer lengths;
--- Part 13. Off-road forklifts with gantry;
--- Part 14. Off-road telescopic forklift;
--- Part 15. Counterbalanced forklifts with articulated steering;
--- Part 16. Walker vehicles;
--- Part 17. Cargo and personnel carriers;
--- Part 20. Additional stability tests for operation under load bias conditions;
--- Part 21. Picking vehicles with an operator position elevation greater than 1200 mm;
--- Part 22. Three-way stacker forklifts with or without operator position;
--- Part 23. Truck-carrying forklifts;
--- Part 24. Off-road rotary telescopic forklift.
This part is the ninth part of GB/T 26949.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB/T 26561-2011 "balanced heavy forklift handling 6m and above length freight containers with additional stability
The main technical changes compared with GB/T 26561-2011 are as follows.
--- Added "terms and definitions" (see Chapter 3);
--- Revised the "test requirements", "test method" and "test list" chapters, some of which are referenced
ISO 22915-1, the rest is adjusted to "Chapter 4 Operating Conditions", "Chapter 5 Test Conditions" and "Chapter 6 Stability Test"
In the certificate (see Chapters 4, 5, and 6, and Chapters 3, 4, and 5 of the.2011 edition).
This part uses the translation method equivalent to ISO 22915-9.2014 "Industrial Vehicle Stability Verification Part 9. Handling 6m and its
Balanced heavy-duty vehicles with gantry above the length of freight containers.
The documents of our country that have a consistent correspondence with the international documents referenced in this part are as follows.
---GB/T 1413-2008 Series 1 container classification, size and rated quality (ISO 668.1995, IDT)
---GB/T 6236-2008 Agricultural and forestry tractors and machinery driver's seat marking points (ISO 5353.1995, MOD)
--- GB/T 7392-1998 Series 1 container technical requirements and test methods for insulated containers (ISO 1496-2.1996,
IDT)
--- GB/T 26949.1-2012 Industrial vehicle stability verification Part 1. General (ISO 22915-1.2008, IDT)
--- GB/T 26949.10-2011 Industrial vehicle stability verification - Part 10. Under lateral load conditions
Additional stability test for stacking operations (ISO 22915-10.2008, IDT)
--- GB/T 26949.20-2016 Industrial vehicle stability verification - Part 20. Addition to work under load offset conditions
Stability test (ISO 22915-20.2008, IDT)
This section also made the following editorial changes.
--- In order to comply with the customary title in China's industry, the standard name was changed to "Industrial Vehicle Stability Verification Part 9. Handling
Counterbalanced forklifts for freight containers of 6m and above length".
This part was proposed by the China Machinery Industry Federation.
This part is under the jurisdiction of the National Industrial Vehicle Standardization Technical Committee (SAC/TC332).
This section is responsible for drafting units. Anhui Heli Co., Ltd., Beijing Crane Transportation Machinery Design and Research Institute Co., Ltd.
Participated in the drafting of this section. Linde (China) Forklift Co., Ltd., Zhejiang Special Equipment Inspection and Research Institute.
The main drafters of this section. Wang Ying, Yang Xinlei, Zhong Haijian, Wang Dan, Wang Moyang, Li Yingxin, Ma Yijian.
The previous versions of the standards replaced by this section are.
---GB/T 26561-2011.
Industrial vehicle stability verification - Part 9. Handling
6m and above length freight containers
Counterbalanced forklift
1 Scope
This part of GB/T 26949 provides for the verification of the balance of gantry and handling of empty or full-load freight containers of 6m and above.
Test method for the stability of heavy forklifts.
This section applies to forks, spreaders (top lift and side lift) or other load handling devices for handling containers.
Forklift.
This section does not apply to forklift trucks carrying containers with a movable center of gravity (see GB/T 17382-2008).
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 10827.1-2014 Safety requirements and verification of industrial vehicles - Part 1. Self-propelled industrial vehicles (except driverless vehicles)
Vehicles, telescopic forklifts and carriers) (ISO 3691-1.2011, IDT)
GB/T 17382-2008 Series 1 container handling and bolting (ISO 3874.1997, IDT)
ISO 668 Series 1 container classification, size and rated quality (Series1freightcontainers-Classification, di-
Mensionsandratings)
ISO 1496-2.2008 Series 1 Container Technical Requirements and Test Methods Part 2. Insulated Containers (Series1freight
containers-Specificationandtesting-Part 2. Thermalcontainers)
ISO 5353.1995 Earth-moving machinery, tractors and agricultural machinery seat calibration points (Earth-movingmachinery, and
tractorsandmachineryforagricultureandforestry-Seatindexpoint)
ISO 22915-1 - Determination of stability of industrial vehicles - Part 1. General (Industrialtrucks-Verificationofstabili-
ty-Part 1.General)
ISO 22915-10 - Determination of stability of industrial vehicles - Part 10. Attachment to stacking under load conditions
Stability test (Industrialtrucks-Verificationofstability-Part 10.Additionalstabilitytestfor
Trucksoperatinginthespecialconditionofstackingwithloadlateralydisplacedbypowereddevices)
ISO 22915-20 - Determination of stability of industrial vehicles - Part 20. Additional stability test for operation under load offset conditions
(Industrialtrucks-Verificationofstability-Part 20.Additionalstabilitytestfortrucksoperatingin
Thespecialconditionofoffsetload,offbybyutilization)
3 Terms and definitions
The terms and definitions defined in ISO 22915-1 apply to this document.
4 working conditions
4.1 Overview
In addition to ISO 22915-1, the following conditions should also be met.
Operate the truck at an air speed of no more than 12.2 m/s (run and stack when the freight container is at normal operating altitude).
4.2 Partial lifting of the container
Lifting the container during operation so that the distance at the bottom of the container is higher than the seat calibration point (SIP) defined by ISO 5353 is not greater than
900mm.
Note. The hoisted container allows the operator at the low position on the vehicle to see the bottom of the container.
5 test conditions
5.1 Overview
See ISO 22915-1.
The normal degree of eccentric load of the container specified in GB/T 17382-2008 should be considered in the test.
When transporting empty containers of reefer containers with integral refrigeration units (refrigerators) as specified in ISO 1496-2, ISO 22915-
20 specified load offset requirements.
5.2 prevailing wind
The test should not be carried out during prevailing winds, otherwise the test results will be greatly affected.
5.3 Wind power
5.3.1 Longitudinal test
In the longitudinal test, the wind acting on the freight container shall be calculated according to formula (1).
F=ρ2×h×L×v
w×Cf1 (1)
In the formula.
F --- wind, the unit is cattle (N);
ρ ---air density, ρ=1.225kg/m3 (at 15°C);
h --- freight container height, h = 2.90m (9ft6in);
L --- freight container length (maximum length of the container designed by the vehicle), in meters (m);
Vw --- rated wind speed, vw = 12.2m/s;
Cf1 --- shape factor, Cf1 = 1.3.
For vehicles intended to be used in wind speeds greater than the rated wind speed of 12.2 m/s, vw should be replaced by the actual wind speed.
Note. Reference materials (such as lifting and building standards) confirm that a Cf1 value of 1.3 is appropriate for winds that are oriented perpendicular to the longitudinal axis of the freight container.
5.3.2 Lateral test
The effect of wind power in the lateral stability test is only apparent when handling containers. In the lateral test, it acts on the freight container
The wind should be calculated according to equation (2) (see Figure 1).
F=ρ2×v
w×Cf2×h×(Lsinα wcosα) (2)
In the formula.
Cf2---shape factor, Cf2=0.8;
-- --- the angle between the lateral tilting axis of the forklift and the longitudinal axis, in degrees (°);
w --- Container width, w = 2.44m.
For vehicles intended to be used in wind speeds greater than the rated wind speed of 12.2 m/s, vw should be replaced by the actual wind speed.
Note. Reference materials (such as lifting and building standards) confirm that for winds that are oriented perpendicular to the transverse tilting axis of the counterbalance forklift carrying the freight container,
A Cf2 value of 0.8 is suitable.
Description.
F --- wind;
a --- Parallel.
Figure 1 Wind of the transverse test
5.4 Location of the vehicle on the inclined platform
The vehicle shall be placed on the inclined platform as specified in Table 1. The load bridge and the steering bridge are indicated by their center lines. Figure 2 defines the load bridge and
The position of the steering axle.
Description.
AA---the longitudinal center plane of the vehicle;
BB---steering bridge;
CC---load bridge.
Figure 2 Longitudinal center plane and bridge
Test 1 and Test 2 (see Table 1), the vehicle should be placed on a tilting platform, and its load-bearing bridge CC should be parallel to the inclined axis of the inclined platform.
XY.
In tests 3, 4 and 5 (see Table 1), the vehicle should be placed in a tilted position on the inclined platform so that the MN line is parallel to the inclined platform.
Tilt axis XY. The steering wheel closest to the tilt axis should be parallel to the tilt axis XY.
The M point is defined as the projection of the intersection of the longitudinal center plane AA of the vehicle and the axis of the articulated steering axle on the inclined platform.
The N point is the center point of the contact surface between the inclined platform surface and the load wheel closest to the tilt axis.
5.5 Test load
5.5.1 Overview
The test load shall include a base load equivalent to the mass of the container and a load or force that simulates the wind acting on the container.
5.5.2 Basic load
The basic load should be equivalent to a 2.90m (9ft6in) high (full or no load) container (see ISO 668) with a mass equal to
The rated lifting capacity specified by the manufacturer, and the point of application is located on the center of mass.
When using a fork to carry the container, the center of mass of the basic load shall be applied to the horizontal distance of the front surface of the vertical section of the fork to be 1220 mm.
2.90m (9ft6in) high container at the midpoint of the height direction.
When using a top lift, side lift or other load handling device, the position of the center of mass should be determined by its connection to the base load.
Set, such as the point of contact between the twist lock and the corner piece.
If the load handling device has a lateral position adjustment function with respect to the longitudinal centerline of the vehicle, it shall comply with ISO 22915-10.
If the load handling device has a position adjustment function in the longitudinal center line direction of the vehicle in addition to the inclination of the gantry, the adjustment range is
Tests should be performed at both extreme positions.
5.5.3 Wind power
In the test, one of the following methods can be used to simulate the effects of wind.
a) horizontally acting on the center of gravity of the test load in a direction perpendicular to the transverse tilting axis of the forklift;
b) When the inclination of the inclined platform reaches the specified inclination angle in the test, an additional overturning moment is added to the wind in addition to the test load.
The vertical load of the action.
5.6 lifting height
5.6.1 Lifting height during simulated stacking test
When conducting test 1 (see Table 1), the horizontal position of the load reference point (such as point E) should not change when the take-up device is lifted from the low position [see figure
3a), Fig. 3b) and Fig. 3c)].
The gantry is vertical and the specified test load is raised to approximately 300 mm above the inclined platform. Use the front end of the fork vertical section or
The picking device establishes point E [see Fig. 3a)], and the fork or the picking device has a fixed relationship with the centroid of the test load. Point E should be used as the inclined platform point F
Reference benchmark. When the gantry is lifted, a new F1 point may be created on the tilting platform [see Figure 3b)]. By making the following adjustments,
The new F1 point can be returned to the initial position F (see Figure 3c)].
The positional change of the F1 point should be corrected by adjusting the inclination of the gantry within the design range of the vehicle.
a)
b)
c)
Figure 3 Reference point location
5.6.2 Lifting height during simulated belt operation test
When simulating a container operation test, the center of mass of the test load shall be at the seat calibration point (SIP) as defined in ISO 5353.
Square 2350mm.
Note. This lifting height does not apply to vehicles that have sufficient visibility in the direction of travel without raising the container, such as a high operator position or backwards operation.
(container rear). In these cases, the load can be located at the actual location specified by the manufacturer.
5.6.3 Simulating the lifting height without the container running test
For the simulation without the container running test, the measurement starts from the root of the fork, for the vehicle with the rated lifting weight not more than 10t, on the fork
The surface should be 300mm higher than the inclined platform; for vehicles with a rated lifting capacity greater than 10t, the upper surface of the fork should be 500mm higher than the inclined platform.
When the load handling device is not forked, the bottom of the load handling device shall be positioned above the seat calibration point (SIP) as defined by ISO 5353.
900mm.
Note. This lifting height does not apply to vehicles that have sufficient visibility in the direction of travel without raising the load handling device, such as a high operator position. These ones
In this case, the load can be located at the actual location specified by the manufacturer.
6 Stability verification
The stability of the vehicle should be verified according to Table 1.
When conducting tests 4 and 5, the wheels should not lose contact with the tilting platform or any structural components, nor should any part of the vehicle
Contact with the tilting platform.
7 mark
The actual lifting capacity of the container handling measured by the stability test shall be marked in accordance with the provisions of 6.3 of GB/T 10827.1-2014.
On the sign.
When the wind speed used in 5.3 is greater than the rated wind speed of 12.2 m/s, the actual wind speed for calculation shall be indicated.
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Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.