The invention provides a sleeve shaft offset type environment loading in-situ mechanical test device, and relates to the technical field of
material structure property detection. Comprising a driving motor, a top plate, an outer supporting column, a motor fixing plate, a gear set, an upper fixing plate, a bidirectional lead screw forward section, a bidirectional lead screw reverse section, a
force sensor, an upper loading cross beam, a lower loading cross beam, a lead screw nut, an inner supporting column, a first
flange corrugated
pipe, a second
flange corrugated
pipe, a lower fixing plate, an offset inner sleeve shaft, an offset outer sleeve shaft, a sample upper chuck and a
test sample. The device comprises a sample lower chuck, a gas regulating valve interface, a vacuumizing interface, a push rod motor, an in-situ observation window, an environment cabin and a bottom plate, the top plate and the bottom plate are connected through the outer supporting columns, and the motor fixing plate, the upper fixing plate and the lower fixing plate are sequentially connected between the top plate and the bottom plate. The bidirectional lead screw between the upper and lower fixing plates serves as a
power transmission core to realize motion conversion; the
force sensor collects load data in real time, and sealing isolation in the movement process is guaranteed through the
flange corrugated
pipe.