The invention relates to a single-coil
magnetorheological fluid normal
stress testing device. The single-coil
magnetorheological fluid normal
stress testing device includes an upper magnetic conduction plate, a steel
I beam, an iron core, a lower magnetic conduction plate, a lower magnetic conduction shaft sleeve, a lower shearing shaft disc, an upper shearing shaft disc, an upper magnetic conduction shaft sleeve, a bearing sleeve, a motor support, a
coupling and a motor; the upper magnetic conduction plate and the lower magnetic conduction plate are fixedly connected with each other through the steel
I beam; one side of a space between the upper magnetic conduction plate and the lower magnetic conduction plate is connected with the iron core, and the other side of the space is provided with the upper shearing shaft disc and the lower shearing shaft disc; the upper shearing shaft disc is installed on the upper magnetic conduction plate through a
ball bearing and the bearing sleeve; the motor is installed above the upper magnetic conduction plate through the motor support; the motor is connected with the upper shearing shaft disc through the
coupling; and the lower shearing shaft disc is installed on the lower magnetic conduction plate through a linear bearing. According to the single-coil
magnetorheological fluid normal
stress testing device of the invention, a single-coil device is adopted, so that the whole structure of the single-coil magnetorheological fluid normal stress testing device is simple and compact, and easy to be assembled; and a non-magnetic O-shaped check ring is arranged at the outer edge of the lower shearing shaft disc, so that the
climb of magnetorheological fluid can be prevented; and the steel
I beam fixing structure is adopted, so that a gap of the upper shearing shaft disc and the lower shearing shaft disc can be ensured.