Anti-clamping and anti-rolling device

The utility model discloses an anti-clamping and anti-rolling device which comprises an upper anti-clamping piece and a lower anti-clamping piece, the upper anti-clamping piece is provided with a plurality of first square grooves and a plurality of first anti-clamping strips, the lower anti-clamping piece is provided with a plurality of second square grooves and a plurality of second anti-clamping strips, each second square groove is opposite to one first square groove, and each second square groove is opposite to one second anti-clamping strip. Each second anti-clamping strip is opposite to one first anti-clamping strip, the limiting strip is arranged in a limiting groove of the upper anti-clamping piece and fixedly connected with the upper anti-clamping piece, the limiting strip is used for adjusting the distance between the upper anti-clamping plate and the lower anti-clamping plate, and the microswitch is arranged on the limiting strip and used for adjusting the distance between the upper anti-clamping pl