Container clamping device

The invention relates to the technical field of container fixing, and provides a container clamping device. The container clamping device comprises a fixing frame, the fixing frame is provided with a height-adjustable fixing cavity, and the fixing cavity is used for allowing a fixing platform to be inserted so that the fixing frame can be fixed to the fixing platform; the folding arm is rotationally connected to the fixing frame; and the clamping assembly is rotationally connected to the end, away from the fixing frame, of the folding arm, and the clamping assembly is provided with a clamping cavity used for clamping a container. When the device is used for obtaining an oil sample, a container is clamped by the clamping assembly, the container is pushed to be close to an outlet of a valve by stretching out and drawing back of the folding arm, and when an inlet of the container is aligned to the outlet of the valve, an operator can operate the valve with two hands, so that the valve is slowly opened, and the o