Hydraulic pin pulling tool

Abstract

The utility model relates to the field of pin puller, especially a hydraulic pin pulling tool, which comprises a fixing disc, an extension oil cylinder, a connecting lug seat, a dismounting pin shaft, a connecting pin rod and an anti-dropping ring, a supporting cylinder pipe is fixedly installed on the side of the lower end of the fixing disc, a connecting port is formed in the inner side of the fixing disc, a pin rod supporting seat is fixedly installed on the upper end of the extension oil cylinder, a pin rod connecting seat is fixedly installed on the output end of the extension oil cylinder, a threaded connecting rod is fixedly installed on the lower end of the connecting lug seat, a limiting block is fixedly installed on the left end of the connecting pin rod, a movable cavity is formed in the right side of the surface of the connecting pin rod, a reset spring is fixedly installed in the movable cavity, and a limiting ball is fixedly installed on the reset spring. The utility model has the advantages of small size, low manufacturing cost, simple assembly, convenient operation, reduced damage of the pin shaft, saved labor cost, improved work efficiency, and application in the disassembly of the connecting pin between the rear groove body and the coal return body.

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