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US 6,332,747 B1Granted
Coupling apparatus for detachably attaching an excavating device to excavator
AssigneeDaemo Engineering Co., Ltd.
InventorWon-Hae Lee
Life of this patent
Estimating the term…
Abstract
A coupling device for automatically coupling an excavating device or a hammer device to an excavator includes an arm coupler fixed to one end of an arm of the excavator and a link coupler fixed to an operation link of the arm of the excavator. The excavating device includes a pair of brackets having a pair of the assembling holes. Piston rods, contained in the arm coupler and the link coupler and inserted into the assembling holes, connect the brackets of the excavating device to the excavator.
Claims31
A coupling apparatus in an excavator, comprising:
- an arm coupler fixed to one end of an arm of said excavator, said arm coupler having a first cylinder containing a pair of first pistons and first side openings;
- a link coupler fixed to one end of an operational link of said excavator, said link coupler having a second cylinder containing a pair of second pistons and second side openings;
- a connecting member directly connected to and fixed between said arm coupler and said link coupler, maintaining a first fixed distance between longitudinal center lines of said arm coupler and said link coupler;
- an excavating device having two pairs of first and second holes respectively formed on a pair of brackets, said first holes having a first common center line spaced apart from a second common center line passing through centers of said second holes by a second fixed distance same as said first fixed distance;
- a pair of first piston rods each formed on an outer end of said first pistons contained in said arm coupler, protruding outwardly through one of said first side openings, rotatably inserted into said first holes for connecting said excavating device to said excavator;
- and
- a pair of second piston rods each formed on an outer of said second pistons contained in said link coupler, protruding outwardly through one of said second side openings, rotatably inserted into said second holes for connecting said excavating device to said excavator.
4 more elements
A coupling apparatus in an excavator, comprising:
- a pair of couplers fixed to an arm link and an operation link of said excavator, each having a cylinder;
- a connector directly connected to and fixed between said couplers, having a first fixed distance between longitudinal center lines of said couplers;
- a pair of pistons contained in said cylinder of each of said couplers, each having a piston rod being formed on an outer end of each piston and a piston head formed on an inner end of said each piston and opposite to said piston rod;
- guide holes formed on each piston head of said pair of pistons;
- a supporting rod, disposed between said pistons and inserted into said guide holes of said pistons for supporting said pistons;
- and
- a resilient member disposed between said piston heads of said pistons and inserted around said supporting rod.
4 more elements
A coupling apparatus in an excavator, comprising:
- a pair of couplers fixed to an arm and an operation link of said excavator, each having a cylinder;
- a connector directly connected to and fixed between said couplers, maintaining a predetermined fixed distance between longitudinal center lines of said couplers;
- first and second pistons contained in each of said couplers, each piston having a piston rod formed on an outer end of said piston and a piston head formed on an inner end of said piston and opposite to said piston rod;
- a guide hole formed on said piston head of said first piston;
- a supporting rod formed on said piston head of said second piston, disposed between said first and second pistons and inserted into said guide hole of said first piston for supporting said first and second pistons;
- and
- a resilient member disposed between said first and second pistons and inserted around said supporting rod.
4 more elements
Dependencies are inferred from the claim text.