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• Product description

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• Introduction The YSSL-300 water well drilling rig is a tracked loading, fully hydraulic driven, and dual power head drilling rig. Mainly suitable for water well drilling construction, and also suitable for the construction of large tonnage prestressed anchor holes and drainage holes in geotechnical engineering such as water electrical station engineering, railways, highway slopes, etc; Pipe shed hole system in underground engineering; Grouting reinforcement holes; Small foundation pile holes; And prevention and control projects for landslides and rock collapse disasters< br/> The drilling rig is equipped with front and rear power heads, which can achieve various drilling methods, such as using a single rotation method for the inner and outer drilling tools; Internal drilling tool forward rotation and outer casing reverse rotation drilling method; When using a power head, conventional rotary drilling and impact rotary drilling can be performed. Drilling rigs can have different combinations of process methods, so they have great adaptability to various formations and complex working conditions. They can effectively solve the problem of difficult drilling in loose cover strata, gravel layers, and fractured bedrock layers, and have a wide range of applications.
  
  Main features ● The drilling rig is a dual power head type drilling rig, which does not require active drilling rods; The extended 7m stroke greatly reduces the number of guide rods, improves drilling efficiency, and reduces the accident rate in the hole; And it can achieve full range pressurized or depressurized drilling
  ● The drilling rig has two power heads and can achieve multiple drilling methods
  ● When drilling in fractured layers and accumulations, the drill pipe power head is connected to the downhole impactor and drill bit to achieve impact rotary drilling. The casing power head drives the casing to rotate and protect the wall. The two power heads can synchronize to achieve rapid drilling
  ● During construction in loose cover layers, quicksand layers, and mud layers, the internal drilling tools are ordinary rotary drilling tools or long spiral drilling tools. The front power head drives the casing to rotate and protect the wall
  ● When drilling in relatively complete formations, a separate power head can be used for conventional rotary drilling and impact rotary drilling
  ● The spindle of the drilling rig power head has a floating function, effectively protecting the drill pipe threads; The casing power head also serves as a pipe twisting machine, which can achieve mechanization of drilling tool unloading and twisting
  ● The feeding mechanism of the drilling rig and the winch can be used simultaneously to meet special process requirements and reduce labor intensity
  ● The hydraulic motor, operating valve, and oil pump of the drilling rig are made of international products, while other components are selected from well-known domestic products to ensure stable, reliable, and long-lasting performance of the entire machine
  ● The power configuration of the drilling rig is strong, meeting the construction requirements of various process methods such as pipe following drilling, cone drilling, impact rotary drilling, and double wall reverse circulation drilling
  ● The drilling rig has complete functions and strong accident handling ability
  
  Technical Parameter

  Borehole diameter（mm）And depth (m)
  Tube diameter	φ219/φ273 / Depth 0-80 (depending on geological conditions)
  Borehole diameter	φ150 / Depth 300
  Drill pipe and casing specifications
  Conventional drill pipe（mm）	φ89×2000; φ89×6000
  Dual-wall drill pipe（mm）	φ114×2000; φ114×6000
  Specification of casing（mm）	φ273×2000; φ219×2000
  Power head
  High output torque（Nm）
  Drill pipe power head	8000
  Tubing power head (also used as a twisting machine)	16000
  Drill pipe power head output speed (rpm)	0~40/80(low-end)/ 0~50/100（）
  Output speed (rpm) of casing power head	7 (low-end)/ 0~13/20（）
  Mast and feed system
  Provide progress（mm）
  Drill pipe power head	7000
  Casing power head	1500
  Large feed force（kN）
  Drill pipe power head	65
  Casing power head	40
  Large lifting force（kN）
  Drill pipe power head	110
  Casing power head	40
  The diameter of the through-hole of the orifice guide device（mm）	300
  Main winch lifting capacity（kN）	70
  Lifting speed（m/min）	35
  Auxiliary winch lifting capacity（kN）	15
  Lifting speed（m/min）	30
  Drilling rig power（kw）	125(Six cylinder Firewood oil engine drive)
  Total weight（kg）	Approximately 13500 (based on actual weight)
  Gradeability（°）	20
  Ground pressure（Mpa）	＜0.04
  Drilling rig form	Integrated (tracked chassis, meeting transportation needs)
  External dimensions of drilling rig
  Transportation status（m3）	11.5*2.2*3.3(Based on actual dimensions)
  Working condition（m3）	5.45*2.2*12(Based on actual dimensions)