Tool capable of fast disassembling work roller jaw of straightening machine

The utility model discloses a tool capable of fast disassembling a work roller jaw of a straightening machine, and belongs to the technical field of maintenance tools of the straightening machine. The tool is used for overcoming the shortcomings that the jaws used in a work roller of the straightening machine is large in number and difficult to replace, the shaft neck of the work roller is damaged easily and the replacement cost is high. According to the technical scheme, a hydraulic driving device is fixed to a moving trolley, a disassembling device is connected with the hydraulic driving device and comprises a connection ring, a connection rod, a core shaft and an ejector rod, the connection ring is connected with the hydraulic driving device, the two ends of the connection rod are connected with the connection ring and the core shaft, the ejector rod penetrates through the center of the core shaft, one end of the ejector rod is connected with the hydraulic driving device, and the other end of the ejector rod is opposite to the work roller. The tool is simple in structure and convenient to use, the design press-in force F can be 200T to the maximum degree, the requirement on sites can be completely met, the work roller jaw can be disassembled fast, the shaft neck of the work roller can not be damaged, the disassembled jaw can be repeatedly used, and therefore the production cost is lowered, and the economic benefit is remarkable.