Geoprobe7822DT直推式多功能鉆探車是美國Geoprobe公司專門為土壤地下水污染調查領研發，該設備結構緊湊，功能多樣，重量約為3.5噸，配備58馬力的8缸久保田柴油發動機，液壓達到4000psi，可在一些其他設備采樣受限的區域進行作業。
7822DT的核心部件是GH64液壓沖擊錘，沖擊頻率每分鐘可達1920次，每次沖擊力在20000磅以上。內置六動 頭，可提供雙向旋轉快速路面鉆探、混凝土取芯、進行錨定或螺旋鉆探功能。沖擊錘也具有回拔功能，具有超 過20噸回拔力的絞盤系統。
7822DT配置為主機、1.5英寸鉆桿、2.25英寸鉆桿、2.25英寸雙套管土壤采樣系統、MC5土壤采樣系統、SP16地下水采樣系統、4.25中控螺旋鉆系統、灌注系統等。
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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