Wheel disc type multi-aluminum alloy pipe hardness automatic measuring device and use method thereof

The invention discloses a wheel disc type multi-aluminum alloy pipe hardness automatic measuring device which comprises a device frame, a driving device is installed at one end of the outer side of the device frame, a cross rod is installed between the top ends of the device frame, and hardness measuring meters are installed in sliding rails at the bottoms of the two ends of the cross rod. The invention further discloses a use method of the wheel disc type multi-aluminum alloy pipe hardness automatic measuring device. The use method comprises the following steps that a rectangular aluminum alloy pipe is placed in a rectangular groove in one side of a wheel disc mechanism, one end of the rectangular aluminum alloy pipe is limited by a positioning device, and the other end of the rectangular aluminum alloy pipe is reset and locked by a check block on a self-locking device. When the measuring device is used, only the rectangular aluminum alloy pipe needs to be put in and taken out, and the remaining part is automatically completed by the measuring device; workers do not need to carry out other steps, so that more time can be saved; a plurality of stations are arranged on the wheel disc, and a plurality of rectangular aluminum alloy pipes can be placed in the stations, so that the measuring efficiency is greatly improved, and the workload is reduced.