Multi-posture adaptive bolt fastening device

The invention discloses a multi-posture adaptive bolt fastening device, belongs to the field of bolt fastening tools, and aims to improve the adaptability of the multi-posture adaptive bolt fastening device. Comprising a displacement base, a right arm wrist and a left arm wrist. The displacement base comprises a rack and a two-way screw rod; two ends of the bidirectional lead screw are movably mounted in an inner cavity of the rack, the left end and the right section of the bidirectional lead screw are in threaded connection with moving nuts, and the top ends of the moving nuts are connected with steering engines; a steering engine at the left end of the bidirectional screw rod is in transmission connection with the left arm wrist to drive the left arm wrist to rotate; a steering engine at the right end of the two-way lead screw is in transmission connection with the right arm wrist to drive the right arm wrist to rotate. And through the arrangement of the two-way lead screw and the steering engine, the right