Reciprocating piston engine connecting rod has the size of the first
division, the bulk connected to the crankshaft pin, the small head
connected to the piston pin.
Piston
work will be transmitted through the connecting rod to the crankshaft,
intake, exhaust agricultural bushing and compression stroke crankshaft
and through the connecting rod to drive the piston. The connecting rod is under pressure for a while and then subjected to tension, so it must have a high strength. Connecting
rod is generally made of medium carbon steel (carbon 0.40-0.60%) or
alloy forging pressure made of its cross-section usually with the shape
of the big head and cover together to form a circle, so as to nest in
the crankpin neck, both sides with Connecting rod bolt fastening, small hole in the connecting rod set copper bush to match the piston pin.
To
reduce the friction between the FB090 bronze roll-up bushing with the
large connecting rod and crankshaft pin, the middle must be lined with a
bearing. Bearing
is made of two thin steel cylindrical bottom tile, the bottom tile
inside casting or centrifugal casting cast a layer of wear-resistant
white metal. This wear-resistant white metal sleeve bushings like a tin-based
alloy, containing tin, antimony, copper, lead and other metals, the
nature of soft and wear-resistant, gasoline car engine to use it.
In
the full floating piston pin connecting rod small hole, in order to
reduce the friction of the connecting rod small head and pin, the middle
of the bushing. The bushing is generally made of rolled copper alloy sheet, which is pressed fit in the connecting rod small hole hole.
In
general, the right side of the connecting rod is provided with a hole
collinear with the bulkhead of the connecting rod connected with the
connecting rod bearing, which is specially designed for the connecting
rod small head oil. When
the connecting rod moves upward (to the right of the engine), the oil
is injected into the piston pin by the main journal through the oil
passage of the connecting rod shaft and then through the small head on
the right side of the connecting rod. Another
set is connecting the middle of the rod by the big bearing hole and the
small hole communicating with an oil hole, the oil hole instead of the
small hole on the right side of the connecting rod, the oil is no longer
spray from the right side of the connecting rod ,
It is directly pressed into the connecting rod small hole bearing
bushing through the oil passage hole between the middle of the
connecting rod.
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