HF-9 rotary drilling rig for large diameter pile construction

Introudction of the HF-9 rotary drilling rig      

• HF-9 rotary drilling rig is mainly used in core drill with diamond bit or hard tungsten-carbide tipped bit in the field of geology, metallurgy, coal mine, hydrological and engineering drilling.
• HF-9 rotary drilling rig can also be used in the fields of superficial-zone petroleum and natural gas mining, mine's gallery ventilation and water discharge tunnel drilling as well as foundation pile construction in large diameter.
• HF-9 rotary drilling rig is compact in construction, rational in overall arrangement, moderate in weight, convenient in assembling and suitable in the range of rotation speed.
• HF-9 rotary drilling rig Equipped with water brake, the rig is in normal-open clutch mechanism.
• The hoist is in low-position operation for its lifting and stopping and other advantages.

.Specifications of the HF-9 rotary drilling rig :

Drilling depth----------------------------   2000~4000m(6560~13120feet) 

Spindle dia---------------------------- 118mm(4.65inch)

Spindle speed (rpm) ----------------------------- Positive: 73; 94; 132; 207; 333;209; 267; 376; 589; 948

                                                                              Negative: 69; 198

 Spindle torque ----------Positive: 18088; 14150; 10044; 6417; 3986N·m(13330; 10429; 7402; 4729; 2938 lbf·ft 6364; 4978; 3534; 2258; 1402 N·m(4690; 3669; 2605; 1664; 1033 lbf·ft) 

Negative: 19109; 6723 N·m(14083; 4955 lbf·ft)

Hexagonal kelly--------------------------------Φ114x102mm(Φ4.49x4.02inch);    Φ89x79 mm(Φ3.5x3.11inch) 

Dia of drill rod----------------------------Φ102      Φ89   Φ71 mm(Φ4.02  Φ3.5   Φ2.8 inch) 

Spindle stroke------------------------------1200mm(47.2inch)

Sliding stroke of drill rig------------------------------ 800mm(31.5inch) 

Max. Lifting force--------------------------------    643KN(144546 lbf) 

Max. Pressurizing force--------------------------  339KN(76207 inch) 

Winding Drum capacity----------------------------350m(1148    feet)

 Steel wire dia. -----------------------------   26mm(1.02 inch) 

Max. Single-wire hoisting force (the third layer) --------------------------150KN(33720 lbf)

Single-wire lifting speed of hoist---------------------------0.75;   0.96; 1.35; 2.12; 3.4 m/s(2.46; 3.15; 4.43; 6.95; 11.15feet/m) 

Drilling angle (without vertical arm) ----------------------------78°-90°

Dimensions( with electric motor) --------------------------------5730x2040x3396mm(225.6x80.3x133.7inch) 

Weight (with electric motor) ---------------------------------------------  10.2T(22491 lb)

Dimensions (with diesel engine) ----------------------------------------6088x2040x3396mm(239.7x80.3x133.7inch) Weight (with diesel engine) ----------------------------------------------  10.8T(23814 lb)

3. Power unit

Electric motor model--------------------   Y315L1-4

Power --------------------------------160KW(215HP) 

Rotating speed of electric motor---------------------1480rpm

Diesel engine model-------------------------  Cummins 6CTA 

Power---------------------------178KW(240HP) 

Rotating speed of diesel engine---------------------   2200rpm