2013 Newly Powerful GQ-20 Big Pile Hole Drilling Rig

1.Big torque, lightweight, 2.Walking device, easy to move and find accurate hole position., 3.easy to operate, smooth. - details see: https://www.machineto.com/2013-newly-powerful-gq-20-big-pile-hole-drilling-rig-10098852

Place of Origin:Chongqing China (Mainland)	Brand Name:Chongtan	Model Number:GQ-20	Quality:Highest
Drilling Construction Technologies:Diamond bit drilling , PDC bit drilling , DTH hammer drilling	Scope of Application:use forward-circulation and reverse circulation drilling methods	Scope of Application 2:Drilling large diameter pile for building,skyscraper,dam,harbor,bridge	Scope of Application 3:mainly used in drilling large diameter well
Feature 1:Mast structure, top-drive head can move down or up along with	Feature 2:Strength and rigidity	Feature 3:Large torque, compact structure, easy to move	Feature 4:Top-drive head is equipped with hydraulic chuck, drilling Efficiently.
Feature 5:Reasonable arrangement, easy to operate, smooth and quick.

2013 Newly Powerful GQ-20 Big Pile Hole Drilling Rig

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GQ-20 engineering drilling machine is newly designed special for large diameter pile hole drilling, can use forward-circulation and reverse circulation drilling methods mainly used in drilling large diameter pile for building, skyscraper, dam, harbor, bridge etc. and drilling large diameter well.

Technical Specifications

hole dia (mm)		Φ2000 mm
drilling capacity (m)		60 m
Active drill pipe		180×180×4434 mm (PathΦ115 mm)
top drive head speeds(r/min)	forward	9.5,10.5,28.4,44.1,65.9
top drive head speeds(r/min)	reverse	10.7
Hoist wire rope lifting speed ( m/s )		forward 0.78,1.36,2.34,3.63
top drive head	max torque (N.m)	55 kN·m
	top drive head inner hole (mm)	182×182 mm
	top drive head max push force(KN)/ pull force	113/154kN
	top drive head stroke(mm)	1000 mm
Hoist	hoist lift capacity with singlerope(KN))	58 kN
	Single rope speed increase speed	0.78 m/s
	Reel diameter	300 mm
	Rope capacity	30 m
	Rope diameter	Φ19.5 m
	Rack mobile travel	1550 mm
	Open orifice distance	1038 mm
	The rig Dimensions (length × width × height)	5000×2400×2840 mm
	The rig Dimensions (length × width × height)	5000×2400×3070 mm (With walking)
	Rig the total weight	12500kg
Rig power	Motor model: Y250M-4	55 kw;1480 r/min