小型挖掘机

CARTER MINI EXCAVATOR (HYDRAULIC CRAWLER EXCAVATORS) SPECIFCATIONS CT85-7A Mini Excavator Engine CUMMINS B3.3(BC30060) Power 60KW/2200RPM In conformity with the EU III emission control regulations, a guarantee of super power Imported hydraulic system with dual pump and dual circuit, stable work performance, fast speed. Guarantee for 3 yrs under normal use and maintenance Imported hydraulic components, Japan made TOSHIBA main pump, Japan made KYB multi-circuit valve, swing motor, walking motor, Japan made or South Korea made gasoline tank On-line digital monitoring and control system GPS satellite position and remote diagnose system(optional) Cold&warm air conditioner supply under different kinds of weather conditions Light and handy pilot operating system Steel pedrail SPECIFICATIONS Engine Model U.S CUMMINS B3.3-C Operating weight 8.300 kg Travel speed 4.6/2.9km/h Bucket Capacity 0.36 0.4m3 Tracking force 70.8kn Engine power 60KW/2.200RPM gradeability 300(58%) Swing speed 11.0RPM Bucket digging force 54.8 kn Ground Pressure 38KPa Arm digging force 46.6 kn DIMENSIONS Boom Length 3.905 mm Arm Length 1.750 mm Upperstructure width 2.170 mm Undercarriage width 2.100 mm Overall Height with cabinet 2.540 mm Rear swing radius 1.835 mm Clearance under counter weight 785 mm Tumbler Distance 2.200 mm Ground clearance 370 mm Overall length for transportation 6.430 mm working range MAX digging radius 6.810 mm MAX digging radius at ground lever 6.680 mm MAX digging depth 4.375 mm MAX vertical wall digging depth 3.200 mm MAX digging height 7.310 mm MAX dumping height 4.950 mm MAX dozer cutting depth 430 mm MAX dozer lifting height 310 mm JAPAN KYB HYDRAULIC SYSTEM MAIN PUMP JAPAN KYB AXIAL PISTON PUMP JAPAN KYB 2 PUMP 2 CIRCUIT HYDRAULIC SYSTEM WITH CONSTANT HORSEPOWER CONTROL FLOW/PRESSURE 79.2*2 L/MIN / 2.200 RPM / 27.5 MPA PILOT PUMP GEAR PUMP FLOW/PRESSURE 20.9 L/min / 2.200 rpm / 3.9 mpa SWING MOTOR setting pressure 20.6MPA ATTACHMENTS over load pressure BOOM / ARM / BUCKET 30.5 MPA -------------------------------------------------------------------------------------------------------------------------------- An excavator is an consisting of an articulated arm (boom, stick), bucket and mounted on a (a rotating platform, like a ) atop an undercarriage with or . Their design is a natural progression from the . Usage Excavators are used in many ways: Digging of , holes, Material handling Brush cutting with hydraulic attachments General grading/landscaping Heavy lift, e.g. lifting and placing of pipes , especially, but not only Driving , in conjunction with a ConfigurationsExcavators come in a wide variety of sizes. The smaller ones are called a mini-excavator or . One manufacturer's largest model weighs 84,980 (187,360 ) and has a maximum bucket size of 4.5 m³ (5.9 yd³). The same manufacturer's smallest mini-excavator weighs 1470 kg (3240 lb), has a maximum bucket size of 0.036 m³ (0.048 yd³) and the width of its tracks can be adjusted to 89 cm (35 inches). Another company makes a mini excavator that will fit through a doorway with tracks that can be adjusted to only 70 cm (28 inches) wide.Excavator attachmentsIn recent years, hydraulic excavator capabilities have expanded far beyond excavation tasks with . With the advent of hydraulic powered attachments such as a , a or an , the excavator is frequently used in many applications other than excavation. Many excavators feature quick-attach mounting systems for simplified attachment mounting, increasing the machine's utilization on the jobsite. Excavators are usually employed together with and . Most wheeled versions, and smaller, have a small backfill (or dozer-) blade. This is a horizontal bulldozer-like blade attached to the undercarriage and is used for pushing removed material back into a hole. Prior to the 1990s, all excavators had a hang over, or "conventional" counterweight that hung off the rear of the machine to provide more digging force and lifting capacity. This became a nuisance in tight turn areas - the machine could not swing the second half of its cycle due to restricted turn radius. In the early 1990s The Komatsu Engineering Company launched a new concept excavator line that did away with the "conventional" counterweight design, and so started building the world's first tight tail swing excavators (PC128.PC138,PC228,PC308). These machines are now widely used though out the world.