Pressure and shear force testing mechanism of pressure-shear testing machine

The utility model relates to a pressure and shear force testing mechanism of a pressure-shear testing machine, which is used for detecting the mechanical property of a basin-type support and comprises an upper bearing plate, a lower bearing plate, a horizontal bearing roller device and a shearing device, wherein the upper bearing plate and the lower bearing plate are oppositely arranged; the basin-type support is placed on the lower bearing plate; the shearing device comprises a shearing plate; the basin-type support, the shear plate, the horizontal bearing roller device and the upper bearing plate are sequentially arranged from bottom to top, and pressure is applied through the upper bearing plate; the horizontal bearing roller device is mounted at the bottom of the upper bearing plate and comprises a roller mounting plate, a roller and a roller; the roller is mounted on the mounting plate through a rolling shaft and protrudes out of the surface of the mounting plate; and the rollers are supported on the upp