GBT20234 Vehicle Rolling Stock

7.13 Vehicle crushing

7.13.1

Place the power plug and vehicle plug of the recommended cable from the manufacturer on the cement floor in any normal way. Use regular

The car tire is used to crush the sample at a pressure of 5000N ± 250N and a speed of 8km/h to 2km/h. The tire specification is P225/75R15 or the same

Wait for the load, install steel wheel rims on the tires, and inflate them to a pressure of 220kPa ± 10 kPa. The sample should be kept or blocked in a fixed position to avoid testing

The sample undergoes actual movement. Grinding pressure should not be applied to protrusions. If the cable component has a liquid medium cooling device, the liquid medium should

Work at rated pressure.

7.13.2 Use additional specimens and ordinary car tires with moderate load and inflation pressure at rated pressure, with a load of 11000N ± 550N

Repeat the rolling test of 7.13.1 under the same pressure.

7.13.3 Conduct vehicle compaction test on the charging cable according to the methods in 7.13.1 and 7.13.2. During the test, the charging cable is placed flat on the cement

On the ground, the tire is rolled in a direction perpendicular to the axial direction of the charging cable. If the cable component has a liquid medium cooling device, it should be cooled in the liquid medium

Crush the two types of charging cable samples for rated pressure operation and emptying liquid medium separately.