Hi, I have some more information. But, I am not sure whether or not this will help.
Based on another site Robox Irdirection-红外方向传感器模块-Arduino爱好者 - Powered by Discuz! I see that the library and the example code have changed. I can't download the new zip file as I am required to register and I don't know how to register.
If you want to, you can certainly try downloading the new zip and see whether it will work.
Good luck.