First, the role of forklift crankshaft flywheel set
1. The function of the forklift of the forklift truck is to change the upward and downward movement force of the gas pressure transmitted from the piston rod connecting rod of the forklift to the torque rotating around its own axis, to output power externally, and to drive the valve train and the auxiliary devices. The crankshaft is subjected to changing gas pressure, inertial force and torque during operation, so the forklift crankshaft must have sufficient hardness and strength. The main journal of the crankshaft of the forklift is the support portion of the crankshaft and the axis of rotation, and is mounted in the main bearing housing bore of the cylinder block with a main bearing bush (tile bearing). In some engine types, the main shaft adopts a rolling bearing, the Connecting Rod journal is matched with the large end of the connecting rod, the crank is used to connect the main journal and the connecting rod journal, and the balance weight is used to balance the centrifugal force and the centrifugal torque generated during the engine operation to make the engine Smooth operation. An oil passage penetrating the main journal, the crank and the connecting rod journal is formed in the crankshaft to allow a certain pressure of lubricating oil to flow to lubricate the crankshaft crankshaft and the connecting rod bearing.
The front end shaft refers to the part before the first main shaft, usually equipped with a starting fan pulley , timing gear, oil retaining plate, etc., and some also equipped with a torsional vibration damper. The rear end shaft is the part after the last main journal. There are flanges for the flywheel, oil return threads and oil slingers.
2. The function of the forklift flywheel is to store part of the rotational energy of the crankshaft stroke to drive the shaft shank linkage mechanism over the top dead center and overcome the resistance of the other three auxiliary strokes while transmitting the power of the engine to the clutch. In order to make the flywheel have a large rotational inertia and a minimum mass, the mass of the flywheel is concentrated on the Rim . A ring gear is typically provided on the outer edge of the flywheel for engagement with the starter gear to activate the forklift engine.
Second, the composition of the forklift crankshaft flywheel
1. The forklift crankshaft is mainly composed of small forklift parts such as front end shaft, main journal, connecting rod journal, crank, balance weight and rear Axle .
2. The forklift flywheel is a disc made of cast iron with a toothed Ring on the outer edge that can mesh with the drive gear of the forklift starter. Timing gear, pulley and crankshaft torsional vibration damper.
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