Adjusting device and gripping device

An adjusting device comprises a rotating mechanism, an adjusting assembly and a locking piece, the rotating mechanism comprises a rotating shaft and a plurality of pushing pieces, each pushing piece is provided with a conical face, the adjusting assembly comprises a plurality of adjusting mechanisms connected with the pushing pieces in a one-to-one correspondence mode, each adjusting mechanism comprises a supporting piece, a sliding piece, a ball seat and a ball pin, and the supporting piece is provided with a first through hole and a second through hole. The rotating shaft is slidably arranged in the first through hole, the sliding piece is slidably arranged in the second through hole and abuts against the conical surface, the ball seat is connected to the supporting piece, and the ball pin is rotatably arranged in the ball seat and connected with a tool; the locking piece is configured to abut against the side wall of the supporting piece. The utility model further discloses a grabbing device. According to