Constant-current sampler convenient to carry

The utility model discloses a constant-current sampler convenient to carry. The sampler comprises a sampler main body and a placement frame, the number of telescopic rods is three, a buffer plate is placed at the bottom end of the sampler main body, a first threaded cylinder is installed at the bottom end of the placement frame through a bearing, fixing bolts are installed on the telescopic rods through threads, and second threaded cylinders are hinged to lower rods of the telescopic rods. According to the utility model, the fastening bolts and the clamping plates are arranged on the two sidesof the placing rack; a plurality of sampler main bodies with different volumes can be fixed; simple structure, convenient and fast use, a buffer plate and a buffer spring are arranged in the placement frame; when the sampler main body is placed in the placing frame, the buffer effect is achieved, due to the fact that the sampler main body is expensive, vibration generated in the placing process can influence loosening of