The utility model belongs to the technical field of liquid coupler disassembly, and particularly relates to a device for quickly disassembling a liquid coupler, which comprises a sliding rod, a limiting plate is fixedly arranged at the front end of the sliding rod, a connecting column is in threaded connection with the
tail end of the sliding rod, and the connecting column is in threaded connection with the liquid coupler. A balancing weight is arranged on the sliding rod in a sliding mode, two handles are symmetrically arranged on the balancing weight, traction ropes are fixedly connected to the handles, and the traction ropes are manually pulled to drive the balancing weight to slide on the sliding rod. When the hydraulic coupler dismounting device is used, the sliding rod is connected with the hydraulic coupler through the connecting column, then the counterweight block is pulled through the pulling
rope to
impact the limiting plate, and the sliding rod drags the hydraulic coupler out little by little under the action of
inertia, so that the dismounting speed of the hydraulic coupler is increased, and the risks of breakage and deformation of the lead screw are completely eradicated.