Supporting device capable of automatically aligning and increasing force

The utility model discloses an automatic aligning and reinforcing support, which is characterized in that a piston end cover is in threaded connection with the bottom of a thrust piston, a return spring is arranged in an inner cavity at the upper part of the piston end cover, a stop end seat is arranged at the top of the return spring, a clamping sleeve and a steel ball are arranged at the top of the stop end seat, and a support rod is arranged in the piston end cover and the clamping sleeve; the supporting rod is located in the return spring, the top of the supporting rod penetrates out of the top of the cylinder body and is in threaded connection with a supporting cap, an ejection spring is installed at the bottom of the supporting cap, an ejection spring seat is installed at the bottom of the ejection spring, the ejection spring seat is in threaded connection with the top of the lifting piston, and the lifting piston is sleeved with a return spring. The return spring is located in a lower inner cavity of t