Anchor rod pulling resistance detection device

The invention relates to an anchor rod anti-pulling performance detection device, which relates to the field of engineering detection, and comprises a bracket platform, a drawing oil cylinder and a snap ring oil cylinder which are sequentially arranged along an anchor rod in a sleeving manner, a first oil cavity is formed in the drawing oil cylinder, a first oil nozzle is connected to the end, close to the support platform, of the drawing oil cylinder, and the first oil nozzle is communicated with the first oil cavity; the clamping ring oil cylinder is connected with a drawing piston extending into the drawing oil cylinder, a second oil cavity is formed in the clamping ring oil cylinder, a second oil nozzle is connected to the outer side of the clamping ring oil cylinder and communicated with the second oil cavity, and a clamping ring piston is slidably connected to the middle of the clamping ring oil cylinder. One end of the snap ring piston is located in the second oil cavity, and the other end is used for