Pin shaft lubrication double-oiling device and grab bucket with same

The pin shaft lubricating double-oiling device comprises a pin shaft, a bearing bush, a shaft sleeve, a first oil nozzle and a second oil nozzle, an oil duct is arranged in the pin shaft, the first oil nozzle is installed on the end face of one end of the pin shaft, a first oil hole is formed in the bearing bush, and a second oil hole is formed in the shaft sleeve in the radial direction. The second oil nozzle is installed on the outer wall of the shaft sleeve, and an oil storage groove communicated with the second oil hole is further formed in the shaft sleeve. The pin shaft lubrication double-oiling device can be arranged at the hinged position of a supporting rod and a bucket clack of the grab bucket, the hinged position of the supporting rod and an upper bearing beam and the hinged position of the bucket clack and a lower bearing beam, during daily oiling maintenance, lubricating oil can be injected from the first oil nozzle on the pin shaft and can also be injected from the second oil nozzle on the shaft