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Power System and Transmission System of SANY Motor Grader

in Welcome to the Forum ! Thu Jan 05, 2017 9:03 am
by caterpillar • 28 Posts

Driving force of full hydraulic Motor Graders is offered by engine then sent to variable pump to drive variable motorin balance box to control the rear 4 wheels after speed reduction. SANY SHG 190 is equipped with Euro ⅡDeutzengine with a rated power of 148kw. This BF6M1013EC diesel engine features turbo-charged & water-cooling.Roller Compactor Cooling system is improved after reasonable combination and design. Windward space of radiator is increased.Seal performance of radiator upper tank & expansion water tank is improved. The same is true of electric fan’spower. Capacity of fuel tank is increased from 260L to 300L. Besides above, radiator fluid level alarm and fuelsuction filter are added to highly improve integrated performance of engine.

Transmission system consists of hydraulic pump, hydraulic motor, rear frame, reducing balance box, tubes, and so on.Driving force offered by engine is sent to wheels & working device to make the motor grader travel and work. Road Machinery Traditionaltransmission system of motor grader is as shown in Figure 1. It functions as passing driving force, reducing speed, keepingbalance, braking and loading by assembly of gearbox, transmission shaft, driving axle and balance box (chain-transmission type). Mini Excavator The disadvantages of traditional system include overlong route, high failure rate, hard maintenance,high cost, etc.

According to transmission features of full hydraulic motor grader, SANY firstly creates multi-functional rear axle balancedbox assy as shown in Figure 2 which can replace traditional hydraulic force motor grader’sassy of gearbox, transmissionshaft, driving axle and balance box. Excavator SANY balanced box assy functions as passing driving force, reducing speed, keepingbalance, braking and loading. It’s driven by gears. Each reducing balance box contains 7 shafts and 11 gears. Overallspeed reduction ratio is 33.726. In order to make SHG series motor grader work under steplessauto shift gear at a speed from0~31.6 km/h, the max rotary speed of hydraulic motor must be reduced to the rotary speed of wheels from 4500r/min to133.4r/min. Sany Spanish

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