Small region plane pin puller

The utility model relates to a small region plane pin puller, which relates to the removing technology of positioning and anti-rotating pins on the end surface of various units and pumps, and overcomes the defects in the prior art. The small region plane pin puller is formed by connecting an external threaded sleeve, an internal thread sleeve, a screw rod, a locking supporting plate and a screw rod nut, wherein the internal thread sleeve is twisted in the external thread sleeve to form a sleeve assembly, the sleeve assembly is sheathed on a pin, the screw rod passes through the supporting plate to be twisted in a pin hole to reach the thread bottom part of the pin hole, the nut is twisted in the screw rod to lock the supporting plate, the pin can be pulled out through rotating the sleeve assembly, and the pin can loosen through rotating the screw rod nut to stress or vibrate the screw rod, so that the pin can be quickly pulled out. The small region plane pin puller has the beneficial effects that: (1) the wor