Geoprobe7822DT直推式多功能钻探车是美国Geoprobe公司专门为土壤地下水污染调查领研发，该设备结构紧凑，功能多样，重量约为3.5吨，配备58马力的8缸久保田柴油发动机，液压达到4000psi，可在一些其他设备采样受限的区域进行作业。
7822DT的核心部件是GH64液压冲击锤，冲击频率每分钟可达1920次，每次冲击力在20000磅以上。内置六动 头，可提供双向旋转快速路面钻探、混凝土取芯、进行锚定或螺旋钻探功能。冲击锤也具有回拔功能，具有超 过20吨回拔力的绞盘系统。
7822DT配置为主机、1.5英寸钻杆、2.25英寸钻杆、2.25英寸双套管土壤采样系统、MC5土壤采样系统、SP16地下水采样系统、4.25中控螺旋钻系统、灌注系统等。
7822DT Specifications
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Stroke
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78 in.
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1,981 mm
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Weight
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7,555 lb.
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3,427 kg
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Width
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60 in.
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1,524 mm
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Length (folded)
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133 in.
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3,378 mm
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Height (folded)
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99.5 in.
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2,527 mm
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Height (unfolded)
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184 in.
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4,674 mm
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Lateral Movement (side-to-side)
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25 in.
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635 mm
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Oscillation
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+/- 10 degrees
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Foot Travel
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20.5 in.
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521 mm
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Extension
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15.5 in.
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394 mm
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Down Force
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36,000 lb.
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160 kN
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Retraction Force
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48,000 lb.
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214 kN
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Hydraulic Pressure (system)
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4,000 psi
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276 bar
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Hydraulic Flow Rate (system)
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40 gpm
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151 Lpm
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Hammer System
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GH64
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Percussion Rate
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32 Hz
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Torque (hammer motor)
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(see below)
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Rotation Rate (hammer motor)
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(see below)
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Fuel Capacity (diesel)
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17 gal
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64L
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Engine (diesel)
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Kubota, 4-cylinder turbo
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Engine Power
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58 hp
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43 Kw
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Outrigger Extension
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N/A
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Rear Stabilizer Lift
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2,000 lb.
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907 kg
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Ground Speed
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0-5 mph
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0-8 kph
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Surface Load
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4.6 lb/in2
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0.32 kg/cm2
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Winch Rating
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2,350 lb.
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1,066 kg
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Winch Speed
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0-110 fpm
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0-34 m/min
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GH64 Hammer Specifications
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Torque (high torque/low speed)
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450 ft. lb.
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610 N·M
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Torque (low torque/high speed)
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225 ft. lb.
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305 N·M
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Rotation speed (low speed/high torque)
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0-250 rpm
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Rotation speed (high speed/low torque)
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0-500 rpm
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Augerhead Specifications
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Torque (high torque/low speed)
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4,000 ft. lb.
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5,423 N·M
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Torque (low torque/high speed)
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2,000 ft. lb.
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2,712 N·M
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Hex adapter
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1-5/8 in
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41 mm
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Rotation speed (low speed/high torque)
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0-75 rpm
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Rotation speed (high speed/low torque)
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0-150 rpm (GA4000)
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Rotation speed (high speed/low torque)
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0-750 rpm (GA4100)
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