Vacuum cylinder fixing device for light commercial vehicle

The utility model relates to the technical field of vacuum servo brake systems of commercial vehicles, in particular to a vacuum cylinder fixing device of a light commercial vehicle. The vacuum cylinder is installed on the oil can filling support through a fixing device, the fixing device comprises a vacuum cylinder upper cylinder column head, a first fixing end and a second fixing end on the twosides of the middle of the vacuum cylinder, a main supporting frame fixedly connected with the first fixing end and the second fixing end, and an auxiliary supporting frame fixedly connected with thecylinder column head. The main supporting frame comprises an upper support and a lower support, the two sides of the upper support are provided with a left dovetail part and a right dovetail part, theleft dovetail part is fixedly connected with a first fixing end, the right dovetail part is fixedly connected with a second fixing end, and therefore the main supporting frame is fixedly connected with the vacuum cylinder. And