Drilling machine with small volume and high speed for dust-free mechanical drilling

A drilling machine, comprising:

• a main body;
• an operating mechanism;
• a harmonic speed changer;
• a centralizer;
• a drainage tube controlling assembly;
• a dust collection device;
• a caterpillar track unit;
• a drill rod storage frame;
• and
• an electric motor-oil pump conversion box;
• wherein:
• the caterpillar track unit is fixed on both sides of the main body and in contact with a ground, to move the main body;
• the operating mechanism and the electric motor-oil pump conversion box are disposed on the main body;
• the main body comprises a main frame provided with a mounting plate;
• the mounting plate is connected to the operating mechanism through a rotary speed changer;
• the electric motor-oil pump conversion box is disposed on one side of the operating mechanism;
• the drill rod storage frame is connected to a front end of the mounting plate;
• the operating mechanism comprises a sliding frame assembly, a sliding guide rod, a propulsion cylinder, a compensating cylinder, a compensating slide, and a power head;
• the propulsion cylinder and the compensating cylinder are disposed on the sliding frame assembly in parallel;
• the propulsion cylinder is connected to the sliding guide rod;
• the compensating cylinder is connected to the compensating slide;
• an outer wall of the propulsion cylinder is provided with a chain, and the chain is connected to the compensating cylinder;
• the power head is disposed on the sliding guide rod;
• the power head clamps a drill rod through a connector;
• the centralizer and the drainage tube controlling assembly are disposed on the sliding frame assembly;
• the centralizer, the drainage tube controlling assembly, and the power head are on a horizontal line;
• the compensating slide is connected to a vertical rotary reducer;
• the vertical rotary reducer is connected to the harmonic speed changer;
• the harmonic speed changer comprises a support positioning column, a rack, and a harmonic reducer;
• the support positioning column is disposed on the mounting plate;
• the rack is disposed on an outer wall of the support positioning column;
• the harmonic reducer is connected to the rack;
• one side of the harmonic reducer is connected to the vertical rotary reducer through a support plate, and a horizontal rotary reducer is connected to a lower end of the harmonic reducer;
• the centralizer comprises a base, a press plate, a sleeve, an insertion plate, a link rod, and a hydro-cylinder;
• two ends of the base are respectively equipped with shaft sleeves, and the shaft sleeves are fixed on the sliding frame assembly through connecting pieces;
• the press plate is disposed on the base;
• the sleeve is disposed on the press plate;
• the insertion plate is disposed in the sleeve in a plug-in way;
• the link rod is connected to a top end of the insertion plate via a first hinge pin;
• the link rod is connected to the hydro-cylinder;
• and hydro-cylinder is disposed on the press plate through a second hinge pin;
• and
• the drainage tube controlling assembly comprises a first shell, a second shell, a hydraulic motor, and a base plate;
• a first rear end of the first shell and a second rear end of the second shell are both hinged on the base plate;
• a first support tube is disposed on a first front end of the first shell and a second support tube is disposed on a second front end of the second shell;
• the first support tube and the second support tube are connected to the sliding frame assembly;
• a driving wheel and a driven wheel are disposed in the first shell;
• the driving wheel is engaged with the driven wheel through a transmission chain;
• the driving wheel is connected to the hydraulic motor;
• and two driven wheels are disposed in the second shell.