Measuring weir plate for measuring flow of measuring weir

The invention relates to the technical field of measuring weir plates, and discloses a measuring weir plate for measuring the flow of a measuring weir, which comprises a plurality of mounting mechanisms I, and two adjacent mounting mechanisms I are clamped; the mounting mechanism II is positioned on one side of the mounting mechanism I; the third mounting mechanism is located on the other side of the first mounting mechanism; a second positioning mechanism is rotatably mounted at the position, close to the rear end, of the side, away from the first mounting mechanism, of the third mounting mechanism, and a first positioning mechanism is rotatably mounted at the position, close to the rear end, of the side, away from the first mounting mechanism, of the second mounting mechanism. A first vertical plate, a second vertical plate and a switching mechanism are clamped into the first mounting mechanism, the second mounting mechanism and the third mounting mechanism, the first vertical plate and the second vertical