16
BASIC STRUCTURE AND WORK PRINCIPLE
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Movement and power transmission route of excavator shown below:
l.
Traveling power route: diesel engine —— coupler —— hydraulic pump
（
mechanical
energy changed to hydraulic energy
）
—— distributor valve —— central swing joint ——
traveling motor
（
hydraulic energy changed to mechanical energy
）
—— sprocket ——
rubber crawler—— starting of traveling
2.
swing power route: diesel engine —— coupler —— hydraulic pump
（
mechanical energy changed to hydraulic energy
）
—— distributor valve—— swing
motor
（
hydraulic energy changed to mechanical energy
）
—— slewing bearing ——
realizing of wing
3.
Boom power route: diesel engine —— coupler —— hydraulic pump
（
mechanical energy changed to hydraulic energy
）
—— distributor valve —— boom
cylinder
（
hydraulic energy changed to mechanical energy
）
——boom movement
4.
Arm power route: diesel engine —— coupler —— hydraulic pump
（
mechanical
energy changed to hydraulic energy
）
—— distributor valve —— arm cylinder
（
hydraulic
energy changed to mechanical energy
）
—— arm movement
5.
Bucket power route:
diesel engine ——coupler —— hydraulic pump
（
mechanical energy changed to hydraulic energy
）
—— distributor valve ——
bucket cylinder
（
hydraulic energy changed to mechanical energy
）
—— bucket movement
