Green ripples timing scheme demonstration teaching aid

The utility model discloses a green ripples timing scheme demonstration teaching aid, which comprises a bracket, two montants of fixedly connected with on the blank of support, connect a plurality ofhorizontal poles on the montant, be provided with a plurality of roll piece on the horizontal pole, the box that rolls is connected to the piece that rolls, and the right -hand member fixed connectionof red strip and a IOU issued by a post office is in on rolling the piece, the left end winding is in on rolling the box, the vertical axis ranging rod passes through the magnetic stripe to be fixedon the montant. The utility model adopts the above structure, can express green ripples control strategy, nature directly perceived is strong, operates more in a flexible way. 本实用新型公开了种绿波配时方案演示工具，包括支架，所述支架的白板上固定连接有两根竖杆，所述竖杆上连接若干横杆，所述横杆上设置有若干个滚动块，所述滚动块连接滚动盒，红条和绿条的右端固定连接在所述滚动块上，左端缠绕在所述滚动盒上，竖轴测距尺通过磁条固定在所述竖杆上。本实用新型采用以上结构，可对绿波控制方案进行表达，直观性强，操作更灵活。