Specifications:

• The spacious operation range of the extra long boom excavatorembodies far-reaching construction purpose and it is mainly usedfor dredging of river channels and lakes, demolition of buildingsand earth excavation. Supreme Power, High Reliability and Low FuelConsumption. Advanced and reliable hydraulic control system.

Description:

The spacious operation range of theextra long boom excavator embodies far-reaching constructionpurpose and it is mainly used for dredging of river channels andlakes, demolition of buildings and earthexcavation. 


A. Supreme Power, High Reliability andLow Fuel Consumption
Original packaging Comings enginewhich is equipped with electric throttle device can adjust fuelconsumption according to the engine power, realize automatic idlespeed and acceleration and decrease fuel consumption. Theenvironmental protection performance is improved and accords withenvironmental emission standard of EuropeanII. 
Large capacity fuel prefilter andoil-water separator improves fuel quality, decreases the earlywearing of fuel injection nozzle and extends the service life ofengine cylinder. 
The air filter uses macro-scalestructure and is equipped with air prefilter to realize three-stagefiltering which ensures clean air admission and decreases the earlywearing of cylinder components. It particularly satisfies for harshworking environment of heavy dust andwind. 
The muffler uses large capacityairflow section technology, which significantly improves the effectof muting and reduces noiseeffectively. 


B. Advanced and reliable hydrauliccontrol system 
New complete electric controlselective system 
According to different working loads,design different power selection methods, perform optimumperformance in the precondition of reducing fuel consumption andmake the engine and the main pump power reach the beststate.

 

Controlsystem of main pump capacity 
The main pump capacity can adjust automatically and realizecapacity proportional control of the executing system and reducepower loss of the main pump capacity. 
Mode selection system 
Power mode 
H mode: heavy operation excavation, rock or other rigid operationobjects. 
S mode: common operation excavation
L mode: fine, leveling or cleaning operation 
boom and bucket pole maintaining system 
Install boom and bucket pole maintaining valve to prevent them fromsettling, to lengthen the time when it is in the middle and thusimprove its safety and reliability.
Adjustment of the Rotational speed of Engine
The rotational speed of engine can be adjusted to achieve thehighest working efficiency
Natural Overheating Protection of Engine
If the temperature of engine coolant is higher than specified, thepump output and the rotational speed of engine will be reducedautomatically to avoid damage of the machine.
Automatic Idle Speed System
Automatic deceleration device: When the control stick is in themiddle, the automatic deceleration device can adjust the rotationalspeed of engine to the optimum value; while operating the controlstick, the rotational speed of engine can resume to the originalspeed automatically.
Electronic Fault Diagnosis Monitoring System
The electromechanical integrated intelligent monitor has beenadopted to carry out real-time monitoring on rotational speed,motor oil pressure, engine water temperature, fuel consumption, andthe voltage of the battery cell, etc of engine. The driver canlearn more of the machine`s conditions than before, and caneffectively prevent the development of fault.

B.Standard Equipments
1.Original packaging Japanese main pump: negative power + crosspower control system, flow rate of 2×220L/min. Energy-saving, withstandby function and quick response.

2.Original packaging Japanese main valve: rotary priority valve,boom collecting valve, bucket pole collecting valve, bucket polelocking valve, straight walking valve, oil return recovery valve,breaking hammer service valve, external connected bucket collectingpipeline are assembled in the valve, which has completefunctions.
3.Original packaging Japanese swing motor+ deceleration machine:With hydraulic time delay break, swing prevention valve, bufferstarting valve. The impact and swing can be reduced, thus thepositioning operation can be more accurate, and the life ofcomponents prolonged.
4.Japanese walking motor+ deceleration machine: With hydraulic timedelay break, buffer starting valve, double walking speedautomatic/manual switching, it is guaranteed that the moment androtational speed can adjust to the ground working environment.
5.The operators can control the operations accurately. It isflexible, portable and reliable.
6.Slewing bearing: Equipped with large diameter slewing bearing,which can stand the impact, with high loading capacity,full-sealing, self-lubricating, waterproof, dustproof and pollutionprevention.
7.Driving cab: Comfortable, spacious and safe. Well rounded andhigh strength driving cab with profiled bar framework, extremelylow vibration and noise, and greatest operation comfort.
The effective space of the driving cab has been greatly increasedand the sight has been broadened. The interior decoration is simplebut beautiful. The silicone oil damping vibration absorber, whichhas an effective absorbing ability, has been used to further reducethe noise and thus make the driving more comfortable.
8.Air conditioner and sound: high power cooling and heating airconditioner and stereophony sound.
9.Electronic monitoring system: With electronic detecting and soundand light alarming.
C.The completely reinforced components ensure the best excavationability
1.Crawler frame: The advanced X type crawler frame has reduced thedeformation and distortion of the left-right beam, which candistribute the stress arising from loading and working load evenlyalong the whole length of the beam. The left-right longeron hasadopted high quality steel plate which is pressed into a U longeronat onetime, and thus reduced the internal stress in welding andincreased its service life.
2.Slewing platform: The general structure has adopted differentbeam structures, with the optimized methods to increase the generalperformance. based on the design concept of uniform strength, themain beam has adopted the varying cross section structure.
3.Working device: The long boom and long bucket pole have adoptedBS550MC high strength steel plate, and optimized and reinforceddesign, which has greatly increased its strength andreliability.