Paving thickness keeping device for paver

The utility model relates to a paving thickness maintaining device for a paver, which comprises an adjusting roller arranged below an ironing plate, the adjusting roller is horizontally arranged, a lifting mechanism is arranged on the ironing plate, the lifting mechanism drives the adjusting roller to lift vertically, the lifting rack is connected with a height adjusting mechanism, and the heightadjusting mechanism drives the adjusting roller to lift vertically. The height adjusting mechanism is used for adjusting the lifting height of the adjusting roller driven by the lifting mechanism, theheight adjusting mechanism adjusts the height of the adjusting roller driven by the lifting mechanism after the paving thickness is set before the paver starts to pave, and after adjustment, the lifting mechanism is started to enable the adjusting roller to move downwards. According to the adjusting device, the adjusting roller abuts against the base face through the adjusting mechanism, so thatthe distance between the ir