Diaphragm wall down-the-hole hammer trenching machine and use method thereof

A diaphragm wall down-the-hole hammer trenching machine, comprising a crane, a guide frame, a push-pull device, cluster down-the-hole hammers, gas collecting hoods, a high-pressure medium pipe or cable, and a slurry discharge pipe;

• wherein the crane suspends the guide frame;
• the cluster down-the-hole hammers are connected to the bottom of the guide frame by means of the push-pull device;
• the cluster down-the-hole hammers are rectangular, and are in a separate arrangement;
• each cluster down-the-hole hammer comprises a primary hammer and secondary hammers;
• and the plurality of the secondary hammers are disposed on each primary hammer, the secondary hammers being down-the-hole hammers driven by a high-pressure medium or electrically;
• a lower part of each primary hammer is provided with one gas collecting hood;
• the high-pressure medium pipe or cable passes through the guide frame to enter a primary hammer distribution pipeline to drive the secondary hammers to perform percussive drilling;
• mud channels are formed in each primary hammer;
• and
• the slurry discharge pipe passes through the guide frame and communicates with the gas collecting hoods.