The utility model relates to an automatic inclined shaft of adjusting wire rope tension expands equipment of digging, this equipment sets up in the inclined shaft, dig the dolly including tension automatic balance head rope linkage with expanding, tension automatic balance head rope linkage comprises wedge becket bridle, medium plate, last connecting pin, baffle, clamp plate, curb plate, intercommunication hydro -cylinder, coupling assembling, cushion, well connecting pin, switching -over fork, lower connecting pin, wedge becket bridle upper portion and haulage cable link to each other, and the lower part links to each other with medium plate upper portion, and the hydro -cylinder cylinder body is fixed with curb plate upper portion, and piston head and medium plate under shield, clamp plate, the cushion relative motion between the curb plate that links to each other constitutes the adjusting device of pull buckle structure, and two such structures are passed through coupling assembling and have been formed tension automatic balance head rope linkage, the curb plate with expand dig the dolly through well connecting pin, switching -over fork, down the connecting pin be connected, automatic balance head rope linkage passes through high pressure fuel pipe and hydro -cylinder cavity of resorption intercommunication. The utility model discloses an expand in the equipment when digging traversing that the atress is even, stability is good, the security is high, and practical, and is convenient.