Adjustable speed regulating calibration locating device

The invention provides an adjustable speed regulating calibration locating device which comprises an adjusting bolt, a fixed nut and a locating eccentric head. The adjusting bolt penetrates through a threaded hole of a speed regulator cover and is in threaded connection with the speed regulator cover, the top of the adjusting bolt is fixed to the speed regulator cover through the fixed nut, the bottom of the adjusting bolt is fixedly connected with the locating eccentric head, and the locating arc face of the locating eccentric head is in smooth contact connection with the surface of an accelerator driving lever on an accelerator gear rack. The adjustable speed regulating calibration locating device has the advantages that when an engine is calibrated, variable adjustment can be carried out within the largest adjusting range according to different needs through the rotation motion of the adjusting bolt and the locating eccentric head fixed together with the adjusting bolt, the power use needs for different purposes of a diesel engine are met, and operation is easy; the structure is simple, the number of parts is small, machined molded surfaces only include circles and planes, no special molded surface exists, machining and manufacturing cost is low, and high universality is achieved.