Brake fixing device for operating shadowless lamp

The brake fixing device for the operating shadowless lamp comprises a fixing base and an installation block, the installation block is fixedly connected to the top of the fixing base and is vertically arranged, a circular groove is formed in the center of the top of the installation block, an installation rod is vertically arranged over the installation block, through holes are formed in the two ends of one side of the installation rod, and the through holes are communicated with the circular groove. A hollow block is fixedly connected to one side of the mounting block, a sliding plate slides in the hollow block, inserting rods matched with the through holes are fixedly connected to the two ends of one side of the sliding plate and are horizontally arranged, the two inserting rods penetrate through one side of the mounting block and slide in the circular groove, and a moving mechanism used for moving the sliding plate is arranged in the hollow block. The mounting rod can be mounted and dismounted conveniently