Abstract: Scroll compressor, a vehicle air conditioner and a vehicle are disclosed. The scroll compressor includes a first end cover, a casing and a crankshaft. The casing is provided with a supporting portion having a first bearing mounting portion; the first end cover is provided with a second bearing mounting portion; a first end of the crankshaft is arranged in the first bearing mounting portion through a first bearing; a second end of the crankshaft is arranged in the second bearing mounting portion through a second bearing; and the first bearing mounting portion and the second bearing mounting portion cooperate with each other to form an axial limitation on the crankshaft.

Abstract: A method for collecting network usage data of a user in which access device in the network authenticates and authorizes the user, and an AAA server records the user's network resources information authenticated and authorized. IN addition, during network access a router records network usage information and sends the network usage information with UDP messages to an NSC, the NSC aggregates the collected network usage information, the association analysis server performs real-time association analysis for the aggregated network usage data and user network resource information uploaded from AAA server to obtain detailed network usage data of the user.