QC/T 1057-2017 (QCT1057-2017)

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Related Standard	Status	PDF
QC/T 1057-2017	English	279	Add to Cart	4 days [Need to translate]	Snow chains for vehicle	QC/T 1057-2017	Valid	QC/T 1057-2017

QC/T 1057-2017
Snow chains for vehicle
Car snow chains
range
This standard specifies the terms and definitions, requirements, test methods, the same type of judgment and packaging requirements for automotive snow chains.
This standard applies to Ml car snow chains.
Normative references 2
The following documents are essential for the application of this standard. For dated references, only the dated version applies
This standard. For undated references, the latest version (including all amendments) is applicable to this standard.
GB/T 12534 General rules for automotive road test methods
GB 21670 Technical requirements and test methods for brake systems of passenger cars
3 terms and definitions
Column F terms and definitions apply to this standard.
3.1
Snow chains for vechicle
A device installed on automobile tires to increase tire and road grip.
3.2
Packed snow covered track
A flat straight track of compacted snow of at least 500 m in length and 50 m in width, with a slope of < 2%, the snow compaction index measured by the CTI needle anthropometer (see attached
Record A) is 70 ~ 80.
3.3
Ice covered track
A flat straight track with a length of at least.200 m, a width of 20 m, and an ice surface friction coefficient of 0.1-0.2, with a slope of < 2%.
4 Requirements
4.1 General requirements
4.1.1 The appearance of automobile snow chains should be complete, without cracks and delamination, and there should be no sharp corners that damage the road surface; the surface of the snow chains should be free of rust
Corrosion, no plating fall-off, no cracks, no extrusion deformation; should be assembled tightly.
4.1.2 The loading and unloading of automobile snow chains should be quick and convenient.
4.1.3 The automobile snow chains should not damage the tires during installation, use and removal.
4.1.4 After the car snow chain is installed, the side surface protruding from the inner side of the tire should not be larger than 20mm, and the side surface protruding from the outer side of the tire should not be large
To 25 mm.
4.1.5 After the car snow chain is installed, it should not interfere with the vehicle during driving.
4.2 Performance requirements
4.2.1 Braking performance requirements.
When testing in accordance with 5.2, the MFDDCMFDD of a vehicle snow chain test vehicle installed on a compacted snow straight road is sufficient for vehicle braking
The average deceleration issued, see GB 21670) and the MFDD ratio of the same test vehicle without a car snow chain should be not less than
1.3.
MFDD of an automobile snow chain test vehicle installed on an ice straight road and MFDD of an automobile snow chain-free vehicle installed in the same test vehicle
The ratio should be no less than 1.3.
4.2.2 Traction performance requirements.
When tested in accordance with 5.3, the maximum traction of a vehicle snow chain test vehicle installed on a compacted snow straight road is the same as that of the same test vehicle.
The maximum traction ratio of the automobile snow chains should not be less than 1.2.
4.2.3 Loading requirements.
When testing in accordance with 5.4, the test vehicle equipped with the automobile snow chains shall drive at least 80 km on the specified test road,
Drive at least 20km on icy asphalt or concrete roads.
The test vehicle should be able to start normally on climbing roads. During the test, the tires installed with the car's snow chains should not continuously skid.
The pavement should not be damaged, the car snow chains should not break during the test, and the car snow chains should be complete after the test.
5 Test method
5.1 Test conditions
5.1.1 Environmental conditions.
Test ambient temperature.-15 ° C or less.
5.1.2 Meteorological conditions.
The test should be snow-free and fog-free; the wind speed is not greater than 5 m/s during the test.
5.1.3 Test vehicle.
The test vehicle is a two-wheel drive four-wheel passenger vehicle equipped with ABS system. The vehicle condition should meet the technical requirements of the vehicle. The vehicle load is
Ready quality plus two testers in the front row and necessary test equipment.