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Locking mechanism for removable base plate on vibratory compactor

  • US 9,926,676 B1
  • Filed: 09/28/2016
  • Issued: 03/27/2018
  • Est. Priority Date: 09/28/2016
  • Status: Active Grant
First Claim
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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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