引进美国特雷克斯公司生产线制造的33—07自卸载重汽车在我矿使用一年。该车采用康明斯发动机,载重36t,制动系统为前后轮制动,有独立管路的内胀蹄式制动器。制动毂与轮毂用24个英制3/4″螺栓连接,无防松装置,使用时螺栓易松脱。从外面看不见,检查很不方便,采场与停车场义较远,工作中容易出事故。轻者螺栓脱扣,重者螺栓被剪断,均造成制动失灵。螺栓被剪断后,轮毂与制动毂的接触面被划伤,不能使用,需要修复。下面为一修复实例。在图1的a处明显被划伤,出现两条环形沟槽,沟深4mm,宽约 The introduction of the United States Terex production line manufactured 33-07 dump trucks in mine for one year. The car uses Cummins engine, load 36t, brake system for the front and rear wheel brake, a separate line of internal expansion brake shoe. Brake hub and hub with 24 inch 3/4 "bolt connection, no anti-loose device, the bolt easy to use when used from the outside can not see, inspection is very convenient, stool and parking far meaning, work easy The light of the bolt tripping, heavy bolts were cut, are caused by brake failure.After the bolt is cut off, the contact surface of the hub and the brake hub is scratched, can not be used, you need to repair the following is a repair example. Clearly scratched at a of Fig. 1, two annular grooves appear, with a groove depth of 4mm and a broad width