Locking mechanism for removable base plate on vibratory compactor
First Claim
1. A locking mechanism for a base plate of a vibratory compactor, the locking mechanism comprising:
- a locking actuator configured to alternately lock and unlock the base plate relative to the vibratory compactor; and
a hydraulic control circuit in fluid communication with a source of pressurized hydraulic fluid and the locking actuator, the hydraulic control circuit including;
a hydraulic pilot-pressure-actuated, 2-position spool valve, wherein the spool valve is configured to move to a first position when pressurized hydraulic fluid from the source is supplied to the spool valve in a first direction, and move to a second position when the pressurized hydraulic fluid from the source is supplied to the spool valve in a second direction, and wherein;
in the first position of the spool valve the pressurized hydraulic fluid flows through the spool valve and through a first flow passage to a second side of the locking actuator to move the locking actuator to a locked position; and
after the locking actuator is in the locked position, the pressurized hydraulic fluid flows through the spool valve and through a second flow passage to a hydraulic motor configured to power the vibratory compactor; and
in the second position of the spool valve the pressurized hydraulic fluid flows through the spool valve and through a third flow passage to a first side of the locking actuator to move the locking actuator to an unlocked position; and
after the locking actuator is in the unlocked position, the pressurized hydraulic fluid is diverted from the third flow passage to flow back to the spool valve and to the source.
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Accused Products
Abstract
A locking mechanism for a base plate of a vibratory compactor includes a locking actuator configured to alternately lock and unlock the base plate relative to the vibratory compactor, and a hydraulic control circuit in fluid communication with a source of pressurized hydraulic fluid and the locking actuator. The hydraulic control circuit includes a hydraulic pilot-pressure-actuated, 2-position spool valve, wherein the spool valve is configured to move to a first position when pressurized hydraulic fluid from the source is supplied to the spool valve in a first direction, and move to a second position when the pressurized hydraulic fluid from the source is supplied to the spool valve in a second direction. In the first position of the spool valve the pressurized hydraulic fluid moves the locking actuator to a locked position, and after the locking actuator is in the locked position, the pressurized hydraulic fluid operates a hydraulic motor configured to power the vibratory compactor. In the second position of the spool valve the pressurized hydraulic fluid moves the locking actuator to an unlocked position.
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Citations
20 Claims
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1. A locking mechanism for a base plate of a vibratory compactor, the locking mechanism comprising:
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a locking actuator configured to alternately lock and unlock the base plate relative to the vibratory compactor; and a hydraulic control circuit in fluid communication with a source of pressurized hydraulic fluid and the locking actuator, the hydraulic control circuit including; a hydraulic pilot-pressure-actuated, 2-position spool valve, wherein the spool valve is configured to move to a first position when pressurized hydraulic fluid from the source is supplied to the spool valve in a first direction, and move to a second position when the pressurized hydraulic fluid from the source is supplied to the spool valve in a second direction, and wherein; in the first position of the spool valve the pressurized hydraulic fluid flows through the spool valve and through a first flow passage to a second side of the locking actuator to move the locking actuator to a locked position; and after the locking actuator is in the locked position, the pressurized hydraulic fluid flows through the spool valve and through a second flow passage to a hydraulic motor configured to power the vibratory compactor; and in the second position of the spool valve the pressurized hydraulic fluid flows through the spool valve and through a third flow passage to a first side of the locking actuator to move the locking actuator to an unlocked position; and after the locking actuator is in the unlocked position, the pressurized hydraulic fluid is diverted from the third flow passage to flow back to the spool valve and to the source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A vibratory compactor, comprising:
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a vibratory mechanism; a hydraulic motor configured to drive the vibratory mechanism; a removable base plate; and a locking mechanism for selectively engaging the removable base plate to retain the removable base plate on the vibratory compactor, the locking mechanism comprising; a locking actuator configured to alternately lock and unlock the base plate relative to the vibratory compactor; and a hydraulic control circuit in fluid communication with a source of pressurized hydraulic fluid and the locking actuator, the hydraulic control circuit including; a hydraulic pilot-pressure-actuated, 2-position spool valve, wherein the spool valve is configured to move to a first position when pressurized hydraulic fluid from the source is supplied to the spool valve in a first direction, and move to a second position when the pressurized hydraulic fluid from the source is supplied to the spool valve in a second direction, and wherein; in the first position of the spool valve the pressurized hydraulic fluid flows through the spool valve and through a first flow passage to a second side of the locking actuator to move the locking actuator to a locked position; and after the locking actuator is in the locked position, the pressurized hydraulic fluid flows through the spool valve and through a second flow passage to the hydraulic motor; and in the second position of the spool valve the pressurized hydraulic fluid flows through the spool valve and through a third flow passage to a first side of the locking actuator to move the locking actuator to an unlocked position; and after the locking actuator is in the unlocked position, the pressurized hydraulic fluid is diverted from the third flow passage to flow back to the spool valve and to the source. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A vibratory compactor, comprising:
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a vibratory mechanism; a hydraulic motor configured to drive the vibratory mechanism; a removable base plate; and a locking mechanism for selectively engaging the removable base plate to retain the removable base plate on the vibratory compactor, the locking mechanism comprising; a locking actuator configured to alternately lock and unlock the base plate relative to the vibratory compactor; and a hydraulic control circuit in fluid communication with a source of pressurized hydraulic fluid and the locking actuator, the hydraulic control circuit being configured such that the only control input received by the control circuit from outside of the control circuit is the direction of flow of the pressurized hydraulic fluid supplied to the control circuit from the source of pressurized hydraulic fluid, and wherein; flow of the hydraulic fluid in a first direction causes the locking actuator to lock the base plate relative to the vibratory compactor, and the hydraulic motor operates to drive the vibratory mechanism; and flow of the hydraulic fluid in a second direction opposite from the first direction causes the locking actuator to unlock the base plate relative to the vibratory compactor, and operation of the hydraulic motor is stopped. - View Dependent Claims (20)
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Specification