Wǒmen zài xíngli chuánsòngdài qián děngle bàn ge xiǎoshí.
We waited at the baggage carousel for half an hour.
Tips
usage
Standard airport terminology. 传送带 (chuansongdai) by itself is the generic 'conveyor belt' used in factories or supermarkets. Casual speakers may also say 行李转盘 (xingli zhuanpan) - 'baggage turntable.'