Fixed reliable wear -resisting welt

The utility model belongs to the technical field of the mechanical product part, specific theory is exactly a fixed reliable wear -resisting welt, including fixing the wear -resisting welt on the baseplate, wear -resisting welt on be equipped with the shoulder hole, wear -resisting welt by arranging that bolted connection in the shoulder hole is to the base plate, the shoulder hole in the buffering packing ring of having planted, the buffering packing ring pastes the pore wall department of leaning on at the shoulder hole, the shoulder hole include first, second, third hole section, first, third hole section close on the both sides of wear -resisting welt, second hole period number be greater than the aperture of second hole section in between first, the third hole section and aperture first, third hole section, the diameter of aperture and bolt of second hole section identical, be equipped with the buffering packing ring between the mounting hole of bolt and wear -resisting welt, avoided resulting in fricati