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GB/T 21296.3-2020 English PDF (GBT21296.3-2020)
GB/T 21296.3-2020 English PDF (GBT21296.3-2020)
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GB/T 21296.3-2020: Automatic instruments for weighing road vehicles in motion -- Part 3: Weighing axle loads
GB/T 21296.3-2020
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 17.100
N 13
Automatic Instruments for Weighing Road Vehicles in
Motion - Part 3: Weighing Axle Loads
ISSUED ON: NOVEMBER 19, 2020
IMPLEMENTED ON: JUNE 1, 2021
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 4
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 6
4 Product Model ... 7
5 Metrological Requirements ... 7
5.1 Accuracy Level ... 7
5.2 Relations between Accuracy Levels ... 7
5.3 Maximum Tolerances for In-motion Test ... 8
5.4 Scale Interval (d) ... 10
5.5 Minimum Capacity (Min) ... 10
5.6 Consistency between Indicating Devices and Printing Devices ... 11
5.7 Influence Quantities ... 11
5.8 Unit of Measurement ... 11
5.9 Operating Speed ... 11
6 Product Structural Requirements ... 11
6.1 Product Composition ... 11
6.2 Applicability Requirements ... 11
6.3 Requirements for Load Receptor ... 12
6.4 Requirements for Foundation Pit ... 21
6.5 Requirements for Electrical Cabinets ... 23
6.6 Grounding Requirements ... 23
7 Product Technical Requirements ... 23
7.1 General Requirements ... 23
7.2 Width of Load Receptor ... 23
7.3 Axle Identifier ... 23
7.4 Vehicle Identifier ... 24
7.5 Load Cell ... 24
7.6 Electronic Weighing Meter ... 24
8 Installation and Maintenance Requirements ... 24
8.1 General Requirements ... 24
8.2 Installation of Auxiliary Facilities ... 24
8.3 Equipment and Pavement Inspection ... 25
9 Test Methods ... 25
9.1 General Rules ... 25
9.2 Preparation before Test ... 25
9.3 In-motion Weighing Test ... 26
10 Inspection Rules ... 26
10.1 Type Inspection ... 26
10.2 Exit-factory Inspection ... 26
10.3 In-use Inspection ... 27
11 Marking, Packaging, Transportation and Storage ... 28
Automatic Instruments for Weighing Road Vehicles in
Motion - Part 3: Weighing Axle Loads
1 Scope
This Part of GB/T 21296 specifies the terms and definitions, product model, metrological
requirements, product structural requirements, product technical requirements, installation and
maintenance requirements, test methods, inspection rules, as well as product marking,
packaging, transportation and storage of automatic instruments for weighing axle loads of road
vehicles in motion (hereinafter referred to as axle load weigher WIM).
This Part applies to automatic weighing instruments that adopt single or multiple load-bearing
devices that are installed in the controlled weighing area and flush with the road surface to
simultaneously or separately support the entire axle or axle-group being measured, so as to
measure the wheel load (if applicable), axle load and axle-group load (if applicable) of road
vehicles in motion to further obtain the curb weight. In accordance with different wheel-bearing
modes, the automatic weighing instruments can be divided into three types: wheel loads, single-
axle and axle-group. The load receptor of the axle load weigher WIMs can be a single load
receptor, or multiple load receptors. The axle load weigher WIMs used for other occasions may
take this as a reference in the implementation.
This Part does not apply to weighing instruments or measuring systems, in which, the load
receptor or measuring device does not have relative movement with the vehicle in the horizontal
direction during measurement, such as: static wheel load gauges and load measurement devices
embedded in vehicle components, etc.
This Part does not apply to weighing instruments or measuring systems, in which, the load
receptor is simply placed on the road surface, and cannot guarantee that all tyres of the vehicle
under test and the upper surface of the load receptor are approximately on the same plane during
weighing.
This Part does not apply to weighing instruments that merely measure the wheel load on one
side, and then, obtain the axle load, axle-group load and curb weight by multiplying.
2 Normative References
The following documents are indispensable to the application of this document. 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.
GB/T 7551 Cells
GB/T 7724 Electronic Weighing Meter
GB/T 14250 Terminology of Weighing Instruments
GB/T 21296.1-2020 Automatic Instruments for Weighing Road Vehicles in Motion - Part 1:
General Technical Specification
GB/T 26389 Method of Classified Type of Weighing Instrument Products
GB/T 28699 Steel Structure Protection General Requirements of Coatings
QB/T 1588.1 Light Industry Machinery - General Specification for Welding Parts
QB/T 1588.2 Light Industry Machinery - General Specification for Cutting
QB/T 1588.4 Light Industry Machinery - General Specification for Products Painting
3 Terms and Definitions
The terms and definitions defined in GB/T 14250 and GB/T 21296.1-2020 are applicable to this
document. For ease of use, some terms and definitions of GB/T 21296.1-2020 are repeatedly
listed here.
3.1 Axle Load Weigher
Axle load weigher refers to a weighing instrument that can measure the axle load (which can
be directly measured, or can be obtained by accumulating the separately measured wheel loads)
and the axle-group load in one weighing.
NOTE 1: axle load weigher may adopt a single load receptor or multiple load receptors.
NOTE 2: axle load weigher that can measure the axle-group load in one weighing is also called
axle-group load weigher.
[GB/T 21296.1-2020, Definition 3.7.2]
3.2 Axle Load Weigher WIM
Axle load weigher WIM refers to a WIM weighing instrument which adopts the axle load
weigher and its combination, which are embedded in the pavement, and with the upper surface
of the load receptor on the same plane as the pavement, to measure the axle load and axle-group
load (if applicable) of the vehicle, so as to obtain the gross vehicle mass.
[GB/T 21296.1-2020, Definition 3.7.3]
6.3.4.2 Position limiting system
For the low-speed axle load weigher WIM, an appropriate position limiting system shall be
designed and adjusted to allow the load receptor to have a certain movement clearance, without
colliding the surrounding roadbed or other surrounding objects that are not expected by the
design. The position limiting system shall have the function of preventing loosening and
retreating, and shall be convenient for repair, maintenance and adjustment. The various
components of the position limiting system shall receive the anti-corrosion treatment.
6.3.4.3 Embedment fastening
For the medium-speed and high-speed axle load weigher WIMs, the load receptors shall be
embedded in the pavement and fastened together with the pavement, so as to prevent the load
receptors from loosening or jumping out of the pavement, which may affect the weighing or
cause potential safety hazards.
6.3.4.4 Limit of control instrument
Weighing instruments with no clearance between the load receptor and the pavement must not
be used as control instruments.
6.3.5 Anti-skid requirements for the surface of load receptor
In accordance with different environmental conditions of service and product types, appropriate
anti-skid measures (such as: using anti-skid pattern steel pla...
Get QUOTATION in 1-minute: Click GB/T 21296.3-2020
Historical versions: GB/T 21296.3-2020
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GB/T 21296.3-2020: Automatic instruments for weighing road vehicles in motion -- Part 3: Weighing axle loads
GB/T 21296.3-2020
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 17.100
N 13
Automatic Instruments for Weighing Road Vehicles in
Motion - Part 3: Weighing Axle Loads
ISSUED ON: NOVEMBER 19, 2020
IMPLEMENTED ON: JUNE 1, 2021
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 4
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 6
4 Product Model ... 7
5 Metrological Requirements ... 7
5.1 Accuracy Level ... 7
5.2 Relations between Accuracy Levels ... 7
5.3 Maximum Tolerances for In-motion Test ... 8
5.4 Scale Interval (d) ... 10
5.5 Minimum Capacity (Min) ... 10
5.6 Consistency between Indicating Devices and Printing Devices ... 11
5.7 Influence Quantities ... 11
5.8 Unit of Measurement ... 11
5.9 Operating Speed ... 11
6 Product Structural Requirements ... 11
6.1 Product Composition ... 11
6.2 Applicability Requirements ... 11
6.3 Requirements for Load Receptor ... 12
6.4 Requirements for Foundation Pit ... 21
6.5 Requirements for Electrical Cabinets ... 23
6.6 Grounding Requirements ... 23
7 Product Technical Requirements ... 23
7.1 General Requirements ... 23
7.2 Width of Load Receptor ... 23
7.3 Axle Identifier ... 23
7.4 Vehicle Identifier ... 24
7.5 Load Cell ... 24
7.6 Electronic Weighing Meter ... 24
8 Installation and Maintenance Requirements ... 24
8.1 General Requirements ... 24
8.2 Installation of Auxiliary Facilities ... 24
8.3 Equipment and Pavement Inspection ... 25
9 Test Methods ... 25
9.1 General Rules ... 25
9.2 Preparation before Test ... 25
9.3 In-motion Weighing Test ... 26
10 Inspection Rules ... 26
10.1 Type Inspection ... 26
10.2 Exit-factory Inspection ... 26
10.3 In-use Inspection ... 27
11 Marking, Packaging, Transportation and Storage ... 28
Automatic Instruments for Weighing Road Vehicles in
Motion - Part 3: Weighing Axle Loads
1 Scope
This Part of GB/T 21296 specifies the terms and definitions, product model, metrological
requirements, product structural requirements, product technical requirements, installation and
maintenance requirements, test methods, inspection rules, as well as product marking,
packaging, transportation and storage of automatic instruments for weighing axle loads of road
vehicles in motion (hereinafter referred to as axle load weigher WIM).
This Part applies to automatic weighing instruments that adopt single or multiple load-bearing
devices that are installed in the controlled weighing area and flush with the road surface to
simultaneously or separately support the entire axle or axle-group being measured, so as to
measure the wheel load (if applicable), axle load and axle-group load (if applicable) of road
vehicles in motion to further obtain the curb weight. In accordance with different wheel-bearing
modes, the automatic weighing instruments can be divided into three types: wheel loads, single-
axle and axle-group. The load receptor of the axle load weigher WIMs can be a single load
receptor, or multiple load receptors. The axle load weigher WIMs used for other occasions may
take this as a reference in the implementation.
This Part does not apply to weighing instruments or measuring systems, in which, the load
receptor or measuring device does not have relative movement with the vehicle in the horizontal
direction during measurement, such as: static wheel load gauges and load measurement devices
embedded in vehicle components, etc.
This Part does not apply to weighing instruments or measuring systems, in which, the load
receptor is simply placed on the road surface, and cannot guarantee that all tyres of the vehicle
under test and the upper surface of the load receptor are approximately on the same plane during
weighing.
This Part does not apply to weighing instruments that merely measure the wheel load on one
side, and then, obtain the axle load, axle-group load and curb weight by multiplying.
2 Normative References
The following documents are indispensable to the application of this document. 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.
GB/T 7551 Cells
GB/T 7724 Electronic Weighing Meter
GB/T 14250 Terminology of Weighing Instruments
GB/T 21296.1-2020 Automatic Instruments for Weighing Road Vehicles in Motion - Part 1:
General Technical Specification
GB/T 26389 Method of Classified Type of Weighing Instrument Products
GB/T 28699 Steel Structure Protection General Requirements of Coatings
QB/T 1588.1 Light Industry Machinery - General Specification for Welding Parts
QB/T 1588.2 Light Industry Machinery - General Specification for Cutting
QB/T 1588.4 Light Industry Machinery - General Specification for Products Painting
3 Terms and Definitions
The terms and definitions defined in GB/T 14250 and GB/T 21296.1-2020 are applicable to this
document. For ease of use, some terms and definitions of GB/T 21296.1-2020 are repeatedly
listed here.
3.1 Axle Load Weigher
Axle load weigher refers to a weighing instrument that can measure the axle load (which can
be directly measured, or can be obtained by accumulating the separately measured wheel loads)
and the axle-group load in one weighing.
NOTE 1: axle load weigher may adopt a single load receptor or multiple load receptors.
NOTE 2: axle load weigher that can measure the axle-group load in one weighing is also called
axle-group load weigher.
[GB/T 21296.1-2020, Definition 3.7.2]
3.2 Axle Load Weigher WIM
Axle load weigher WIM refers to a WIM weighing instrument which adopts the axle load
weigher and its combination, which are embedded in the pavement, and with the upper surface
of the load receptor on the same plane as the pavement, to measure the axle load and axle-group
load (if applicable) of the vehicle, so as to obtain the gross vehicle mass.
[GB/T 21296.1-2020, Definition 3.7.3]
6.3.4.2 Position limiting system
For the low-speed axle load weigher WIM, an appropriate position limiting system shall be
designed and adjusted to allow the load receptor to have a certain movement clearance, without
colliding the surrounding roadbed or other surrounding objects that are not expected by the
design. The position limiting system shall have the function of preventing loosening and
retreating, and shall be convenient for repair, maintenance and adjustment. The various
components of the position limiting system shall receive the anti-corrosion treatment.
6.3.4.3 Embedment fastening
For the medium-speed and high-speed axle load weigher WIMs, the load receptors shall be
embedded in the pavement and fastened together with the pavement, so as to prevent the load
receptors from loosening or jumping out of the pavement, which may affect the weighing or
cause potential safety hazards.
6.3.4.4 Limit of control instrument
Weighing instruments with no clearance between the load receptor and the pavement must not
be used as control instruments.
6.3.5 Anti-skid requirements for the surface of load receptor
In accordance with different environmental conditions of service and product types, appropriate
anti-skid measures (such as: using anti-skid pattern steel pla...
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