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| Illustration 1 | g06121896 |
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Right Side of Machine (1) Vibratory motor | |
Vibratory motor (1) is located on the front drum on the right side of the machine.
The vibratory motor turns the eccentric weight drive shaft when the vibratory system is operating. This motor is a piston motor with fixed-displacement. This motor has a bent axis.
Rubber isolation mounts dampen the vibration that is transmitted from the drum to the machine when the vibratory system is operating.
Each vibratory motor contains an integral flushing valve. The flushing spool directs oil from the low-pressure side of the loop into the motor case drain.
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| Illustration 2 | g06131387 |
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Vibratory Motor (cross Section) (2) Output shaft (3) Output shaft flange (4) Piston (5) Valve plate (6) Barrel assembly | |
When the vibratory system is operating, supply oil from the vibratory pump enters the motor. Supply oil is directed to the inlet port of valve plate (5). The valve plate directs oil into the piston chamber in barrel assembly (6). Oil pressure forces pistons (4) that are aligned with the inlet port to move out of the barrel assembly.
As pistons (4) are forced out of barrel assembly (6), the pistons exert a thrust against output shaft flange (3). In this case, output shaft (2) rotates. The barrel assembly and pistons rotate with the output shaft.
As barrel assembly (6) rotates, pistons (4) align with the outlet port in valve plate (5). The rotation of the barrel assembly forces oil out of the piston chambers and into the low-pressure side of the hydrostatic loop. The low-pressure oil acts on the flushing spool (not shown) and then returns to the inlet side of the hydraulic pump.