Connecting mechanism and cooler

According to the connection mechanism and the cooler, pipe plates are fixedly arranged at the two ends of a pipe body, flange plates are embedded in the pipe plates, threaded holes are formed in the two sides of the flange plates in a penetrating mode, plugging pieces are connected to the threaded holes in a threaded mode, an oil inlet pipe is fixedly arranged at the top of the pipe body, and an oil inlet is formed in the oil inlet pipe. According to the utility model, the plurality of threaded holes are formed in the flange plate and can be in threaded connection with the plugging pieces or the heat exchange pipes, the number of the connected heat exchange pipes is correspondingly increased or decreased according to the cooling requirement, the remaining heat exchange pipes are plugged by the plugging pieces, and different oil inlets and oil outlets can be used according to the requirement, so that the cooling time of oil is adjusted. According to the cooling device, the pipe bodies serve as the containing a