Conveyer-belt weigher having double weighing frame

The utility model relates to a strap balance with double balance frames, comprising a first weighing device which is composed of a balance frame and a sensor subassembly, a second weighing device which is composed of a balance frame and a sensor subassembly, and a weighing displaying controller. The first weighing device and the second weighting device are arranged in the same measured strap machine. The weighing displaying controller is connected with the first weighing device and the second weighing device through leads. The utility model has the advantages of automatic error and over error detection, automatic fault detection, etc. Besides, the utility model can automatically send out alarm signals to remind operators to deal in time.