Where can I find the patent for the Joda busbar raising frame automatic screw device? The patent number is ZL 2014 2 0446264.5. china patent
This is likely Chinese utility model CN203999849. The number you refer to is the application number.
ZL (zhuānlì) refers to the granted version of an application number. So ZL 201420446264 is the granted utility model of application number 201420446264, which is utility model 203999849.