Testing device and method for testing wear characteristics of shield cutterhead and cutter

Abstract

The invention discloses a testing device and method for testing wear characteristics of a shield cutterhead and cutter. The testing device comprises a testing model box body, wherein a soil filling opening is formed in the top of the testing model box body; the soil filling opening is packaged through a flange disc; a detachable baffle plate is arranged on one side face of the testing model box body; a speed regulating motor is fixed on a test bench; a rotary shaft of the speed regulating motor is connected with a transmission shaft; the transmission shaft is connected with a cutterhead modelarranged in the testing model box body; the testing method comprises S1 to S10. According to the testing device and method, a simulation test is carried out through the cutterhead model of a shield machine; test researches of the wear characteristics of the cutterhead and the cutter with different configurations, and the wear characteristics of the cutterheads and cutters caused by different typesof muck, different cutterhead rotary speeds and operation time, can be realized; meanwhile, a wear reduction effect on the shield cutterhead and cutter of muck improvement can be cchecked, and the abrasion amount on the cutterhead and the cutter in shield construction is predicated; effective quantitative guidance is provide for the shield construction in time.

Description

technical field [0001] The invention relates to the field of tunnel and underground engineering tests, in particular to a test device and method for testing the wear characteristics of shield cutter heads. Background technique [0002] As the main tunneling part of the shield machine, the configuration of the cutter head is usually determined before construction. Since shield construction often encounters various geological conditions, such as upper soft and lower hard strata, weak surrounding rock, quicksand and sand layers, hard rock, etc., the configuration of cutterheads and cutters often needs to take into account various stratum conditions. The slag produced under different stratum conditions will wear the cutter head to varying degrees. Abnormal wear not only leads to low efficiency of shield tunneling, increases the loss of shield equipment and project cost, but also delays the construction period. Frequent The tool change operation is also likely to greatly threate...

AI Technical Summary

Problems solved by technology

The slag produced under different stratum conditions will wear the cutter head to varying degrees. Abnormal wear not only leads to low efficiency of shield tunneling, increases the loss of shield equipment and project cost, but also delays the construction period. Frequent The tool change operation is also likely to cause a great threat to the safety of the operators and even the engineering

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