GB/T 13873-2015 English PDF (GB/T13873-2015)

GB/T 13873-2015: Road Vehicles - Trailer Test Procedure
Delivery: 9 seconds. Download (& Email) true-PDF + Invoice.
Get Quotation: Click GB/T 13873-2015 (Self-service in 1-minute)
Historical versions (Master-website): GB/T 13873-2015
Preview True-PDF (Reload/Scroll-down if blank)

GB/T 13873-2015
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.080.10
T 71
Replacing GB/T 13873-2009
Road Vehicles - Trailer Test Procedure
ISSUED ON: SEPTEMBER 11, 2015
IMPLEMENTED ON: DECEMBER 01, 2015
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Terms and definitions ... 5 
4 Test vehicles ... 5 
5 Test preparation ... 5 
6 Measurement method of the main structural and technical characteristic
parameters ... 6 
7 Test method of the strength of contacting area to the fifth wheel of semitrailer
... 16 
8 Test method of the connection strength to the supporting device of the
semitrailer ... 19 
9 Test method of the braking performance ... 22 
10 Test method of reliability ... 22 
Road Vehicles - Trailer test procedure
1 Scope
This Standard specifies the measurement method of the main structural and
technical characteristic parameters of freight trailer (hereinafter referred to as
trailer), the test methods of the strength of contacting area to the fifth wheel and
the connection strength to the supporting device of the semitrailer, and the test
method of braking performance and reliability of the trailer.
This Standard applies to test of trailers which run on roads and urban roads.
2 Normative references
The following documents are indispensable for the application of this document.
For dated references, only the dated version applies to this document. For
undated references, the latest edition (including all amendments) applies to this
document.
GB/T 3730.1, Motor vehicles and trailers. Types. Terms and definitions
GB/T 3730.2, Road vehicle. Masses. Vocabulary and codes
GB/T 3730.3, Motor vehicles and towed vehicles. Dimensions of vehicles.
Terms and definitions
GB 7258, Technical specifications for safety of power-driven vehicles
operating on roads
GB/T 12534, Motor vehicles. General rules of road test method
GB/T 12674, Motor vehicles. Weight parameter. Measuring method
GB 12676, Technical requirements and testing methods for commercial
vehicle and trailer braking systems
GB/T 13594, Antilock braking performance and test procedure for motor
vehicles and their trailers
GB/T 23336, General technical requirements for semitrailer
attachments of the trailer, the external fastening degree, the lubrication status
and the sealing condition of each assembly.
5.1.3 Check the assembly and adjustment mass of the trailer; they shall comply
with the technical requirements of the manufacturer.
5.1.4 Check the installation of the anti-lock braking device of the trailer; it shall
comply with the provisions of GB 7258.
5.2 Technical inspection
5.2.1 Technical inspection is performed after the general inspection of the trailer
is passed, and before the performance test.
5.2.2 The road conditions of the technical inspection shall comply with
provisions of GB/T 12534.
5.2.3 The traveled distance is not less than 100 km; control the driving speed
within the range of 50% ~ 80% of the maximum speed of the tractor; keep the
driving speed as constant as possible; pay attention to the working condition of
each assembly and component of the trailer during driving, especially the
performance of mechanisms such as steering, braking, connection and light
signal; if abnormal phenomena are found, stop the vehicle to inspect
immediately; find out the cause and eliminate it; then continue the inspection
and test; record the situation in detail.
6 Measurement method of the main structural and
technical characteristic parameters
6.1 Measurement of mass parameters of the trailer
6.1.1 Measurement equipment
According to the mass of the to-be-test trailer, select a weight-bridge (or an axle
load meter) which has the appropriate scale and the accuracy not less than
0.5%. The weight-bridge (or the axle load meter) shall be used within the validity
period of the test. The surface of the weight-bridge and the entrance and exit of
the weight-bridge shall be on the same plane.
6.1.2 Measurement method of the draw-bar trailer
6.1.2.1 Measurement of the unladen mass of the draw-bar trailer and the
axle-load mass of every axle
When the to-be-test trailer is towed by the tractor to drive from one direction
onto the weight-bridge at a low speed, successively measure the front-axle
6.1.3.3 Processing of mass measurement results
For the calculation of the measurement results, see Table 1.
6.1.4 Measurement method of the center-axle trailer
6.1.4.1 Measurement of the unladen mass and the axle-load mass of the
center-axle trailer
Use a tractor to tow the to-be-test center-axle trailer from one direction onto the
platform of the weight-bright at a low speed; separate the center-axle trailer
from the tractor; release the supporting device; measure the unladen mass of
the center-axle trailer G’ao; then, connect the center-axle trailer with the tractor,
move and set out to drive the wheels of the center-axle trailer onto the platform
of the weight-bridge; measure the axle-load mass of the center-axle trailer G’aso;
then, from the opposite direction, use the same method to sequentially weigh
the unladen mass of the center-axle trailer G’’ao and the axle-load mass of the
center-axle trailer G’’aso. When the measurement is performed, stop the center-
axle trailer steadily; relax the brake; adjust the supporting device to the
horizontal position of the bearing plane of the center-axle trailer.
6.1.4.2 Measurement of the maximum total mass and the maximum axle-
load mass of the center-axle trailer
Bring the center-axle trailer to the maximum total mass status; use the method
of 6.1.4.1 to measure, under full load, the maximum total mass of the center-
axle trailer G'a, the maximum axle-load mass of the center-axle trailer G’as, AND,
from the opposite direction, the maximum total mass of the center-axle trailer
G’’a and the maximum axle-load mass of the center-axle trailer G’’as.
6.1.4.3 Processing of mass measurement results
For the calculation of the measurement results, see Table 1.
6.2 Measurement of the mass-center position of the trailer
6.2.1 Calculation of the mass-center horizontal position
6.2.1.1 Calculation of the mass-center horizontal position of the draw-bar
trailer
6.2.1.1.1 The horizontal distance from the mass-center to the front-axle
center line
Calculate according to Formula (1) at no load:
Where:
B -- the horizontal distance from the mass-center to the rear-axle center line at
full load, in millimeters (mm);
6.2.1.2 Calculation of the mass-center horizontal position of the
semitrailer
6.2.1.2.1 The horizontal distance from the mass-center to the traction pin
center line of the semitrailer
Calculate according to Formula (5) at no load:
Where:
A0 -- the horizontal distance from the mass-center to the traction pin center line
of the semitrailer at no load, in millimeters (mm);
Gs02 -- axle-load mass of the semitrailer at no load, in kilograms (kg);
Gs0 -- unladen mass, in kilograms (kg);
Z -- wheelbase (projection distance from the traction pin center to the axle
center of the semitrailer on the horizontal plane), in millimeters (mm).
Calculate according to Formula (6) at full load:
Where:
A -- the horizontal distance from the mass-center to the traction pin center line
of the semitrailer at full load, in millimeters (mm);
Gs2 -- the maximum axle-load mass of the semitrailer, in kilograms (kg);
Gs -- the maximum total mass, in kilograms (kg).
6.2.1.2.2 The horizontal distance from the mass-center to the axle center
of the semitrailer
Calculate according to Formula (7) at no load:
Where:
hg0 -- mass-center height of the draw-bar trailer, in millimeters (mm);
G02α -- rear-axle axle-load mass after the draw-bar trailer is tilted by an angle α,
in kilograms (kg);
G02 -- rear-axle axle-load mass of the draw-bar trailer, in kilograms (kg);
G0 -- unladen mass of the draw-bar trailer, in kilograms (kg);
Z -- wheelbase of the draw-bar trailer, in millimeters (mm);
α -- the angle of inclination of the draw-bar trailer, in degrees (°);
Rs0 -- the wheel static radius, in millimeters (mm).
6.2.2.2 Measurement of the mass-center height of the semitrailer
The mass-center height of the semitrailer can be calculated by superimposing
the assembly mass-center.
6.2.2.3 Measurement of the mass-center height of the center-axle trailer
The mass-center height of the center-axle trailer can be calculated by
superimposing the assembly mass-center.
6.3 Measurement of geometrical parameters and technical characteristic
parameters of the trailer
6.3.1 The surface of the measurement site shall be a clean, level and intact
horizontal ground, and the area shall be able to accommodate the projection of
the trailer shape on the ground.
6.3.2 Park the trailer on the measurement site and make the front wheels in a
straight position.
6.3.3 For the horizontal dimension of trailer, in addition to direct measurement,
use a heavy hammer to project the two ends of the measuring size onto the
ground; and project the longitudinal centerline of the trailer and the centerline
of each axis onto the ground; according to the projection points at both ends of
the measuring size on the ground, perform the measurement that is based on
the longitudinal centerline and the centerline of each axis.
6.3.4 For trailer height dimension, in addition to direct measurement, use
special measuring tools, such as measuring frame and height gauge, to
7 Test method of the strength of contacting area to the
fifth wheel of semitrailer
7.1 Static test
7.1.1 Test preparation
The test shall be carried out on the entire semitrailer or the representative parts
of the vehicle. The fixing device shall be firm and reliable; and it shall be
operated in strict accordance with the installation instructions of the traction pin
manufacturer.
7.1.2 Pre-test inspection
In the contacting area to the fifth wheel of semitrailer, neither convex and sharp
edges, nor holes which have sharp edges or holes which has a diameter of
more than 50 mm, are allowed.
7.1.3 Test procedure
When the representative part of the semitrailer or vehicle is tested, it shall load
to the maximum allowable load that is specified by the trailer manufacturer. The
test force FV/2 loading position is shown in Figure 1 and Figure 2. It may also
perform single-point loading or uniform loading according to the
recommendation of the semitrailer manufacturer.
When loading, it shall be supported by a steel pipe that has an inner diameter
of φ220 mm and an outer diameter of φ280 mm ~ φ300 mm, which is shown in
Figure 3.
GB/T 13873-2015
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.080.10
T 71
Replacing GB/T 13873-2009
Road Vehicles - Trailer Test Procedure
ISSUED ON: SEPTEMBER 11, 2015
IMPLEMENTED ON: DECEMBER 01, 2015
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Terms and definitions ... 5 
4 Test vehicles ... 5 
5 Test preparation ... 5 
6 Measurement method of the main structural and technical characteristic
parameters ... 6 
7 Test method of the strength of contacting area to the fifth wheel of semitrailer
... 16 
8 Test method of the connection strength to the supporting device of the
semitrailer ... 19 
9 Test method of the braking performance ... 22 
10 Test method of reliability ... 22 
Road Vehicles - Trailer test procedure
1 Scope
This Standard specifies the measurement method of the main structural and
technical characteristic parameters of freight trailer (hereinafter referred to as
trailer), the test methods of the strength of contacting area to the fifth wheel and
the connection strength to the supporting device of the semitrailer, and the test
method of braking performance and reliability of the trailer.
This Standard applies to test of trailers which run on roads and urban roads.
2 Normative references
The following documents are indispensable for the application of this document.
For dated references, only the dated version applies to this document. For
undated references, the latest edition (including all amendments) applies to this
document.
GB/T 3730.1, Motor vehicles and trailers. Types. Terms and definitions
GB/T 3730.2, Road vehicle. Masses. Vocabulary and codes
GB/T 3730.3, Motor vehicles and towed vehicles. Dimensions of vehicles.
Terms and definitions
GB 7258, Technical specifications for safety of power-driven vehicles
operating on roads
GB/T 12534, Motor vehicles. General rules of road test method
GB/T 12674, Motor vehicles. Weight parameter. Measuring method
GB 12676, Technical requirements and testing methods for commercial
vehicle and trailer braking systems
GB/T 13594, Antilock braking performance and test procedure for motor
vehicles and their trailers
GB/T 23336, General technical requirements for semitrailer
attachments of the trailer, the external fastening degree, the lubrication status
and the sealing condition of each assembly.
5.1.3 Check the assembly and adjustment mass of the trailer; they shall comply
with the technical requirements of the manufacturer.
5.1.4 Check the installation of the anti-lock braking device of the trailer; it shall
comply with the provisions of GB 7258.
5.2 Technical inspection
5.2.1 Technical inspection is performed after the general inspection of the trailer
is passed, and before the performance test.
5.2.2 The road conditions of the technical inspection shall comply with
provisions of GB/T 12534.
5.2.3 The traveled distance is not less than 100 km...