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Excavator power system

May 17, 2022

Power Transmission Route Table

1. Walking power transmission route: diesel engine - coupling - hydraulic pump (mechanical energy is converted into hydraulic energy) - distribution valve - central rotary joint - walking motor (hydraulic energy is converted into mechanical energy) - reduction box - driving wheel ——Rail chain crawler——to realize walking

2. Slewing motion transmission route: diesel engine - coupling - hydraulic pump (mechanical energy is converted into hydraulic energy) - distribution valve - slewing motor (hydraulic energy is converted into mechanical energy) - reduction box - slewing bearing - realize rotation

3. Boom movement transmission route: diesel engine - coupling - hydraulic pump (mechanical energy is converted into hydraulic energy) - distribution valve - boom cylinder (hydraulic energy is converted into mechanical energy) - realization of boom movement

4. Stick movement transmission route: diesel engine—coupling—hydraulic pump (mechanical energy is converted into hydraulic energy)—distribution valve—stick cylinder (hydraulic energy is converted into mechanical energy)—the stick movement is realized

5. Bucket movement transmission route: diesel engine - coupling - hydraulic pump (mechanical energy is converted into hydraulic energy) - distribution valve - bucket cylinder (hydraulic energy is converted into mechanical energy) - bucket movement is realized


The composition and function of the power system

·Intake system——net cover→hose→air filter→hose→supercharger→hose→intercooler→hose→engine

Exhaust system - supercharger → expansion joint → muffler → exhaust pipe

·Cooling system - water tank→hose→thermostat→water pump→diesel engine→hose→water tank

Throttle control system - stepper motor → reducer → worm gear drive → throttle cable → diesel throttle - high idle speed, low idle speed limit switch

·Fuel System--

Oil inlet system: fuel tank → hose → hand pump → coarse filter → fine filter → diesel engine

Oil return system: diesel engine → hose → fuel tank (the amount of oil returned is relatively large, and it is used for partial cooling)


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