Hydraulic quick coupling

1. A hydraulic quick coupling for the coupling of structural components of cranes, cargo-handling machinery or construction machinery, which are separated or reset, comprising:

two interacting quick-coupling parts which are arranged respectively on the structural components, one quick-coupling part having at least one guide bolt which is configured to engage in a centering bore of the quick-coupling part lying opposite it, each quick-coupling part being provided with coupling plugs or coupling sleeves for the connection of the hydraulic lines, and at least one quick-coupling part being arranged movably on one structural component in order to connect or separate the two quick-coupling parts, wherein the movable quick-coupling part sits displaceably on a guide, the guide coupling the movable quick-coupling part to the one structural component, wherein the movable quick-coupling part is displaceable along the guide via a piston/cylinder arrangement, and wherein the movable quick-coupling part moves along the guide even when the two interacting quick-coupling parts are fully disengaged, wherein at least one of the two quick-coupling parts is arranged on a pivotable support bracket, and wherein the support bracket can be pivoted by a piston/cylinder arrangement.

2. The hydraulic quick coupling as claimed in claim 1 , wherein one quick-coupling part is arranged fixedly on one structural component, and the other quick-coupling part is arranged movably on the second structural component, where the other quick-coupling part is movable relative to the second structural component.

3. The hydraulic quick coupling as claimed in claim 1 , wherein at least one of the quick-coupling parts is spring-mounted in a support frame.

4. The hydraulic quick coupling as claimed in claim 3 , wherein the support frame is mounted movably on the structural component.

5. The hydraulic quick coupling as claimed in claim 3 , wherein the movable quick-coupling part spring-mounted in the support frame is fixed in its opened position by a second guide bolt that engages the centering bore from an opposite side as the guide bolt.

6. The hydraulic quick coupling as claimed in claim 3 , wherein a guide means fixes the movable quick-coupling part spring-mounted in the support frame in its open position.

7. The hydraulic quick coupling as claimed in claim 1 , wherein at least one lock is provided which locks the quick-coupling parts to one another in the coupled state.

8. The hydraulic quick coupling as claimed in claim 7 , wherein the lock secures the at least one guide bolt driven into the corresponding at least one centering bore.

9. The hydraulic quick coupling as claimed in claim 1 , wherein the piston/cylinder arrangement is coupled between the movable quick-coupling part and the one structural component, and where the movable quick-coupling part moves along the guide even when the two interacting quick-coupling parts are fully disengaged.

10. The hydraulic quick coupling as claimed in claim 9 , wherein the piston/cylinder arrangement is configured to move the movable quick-coupling part between a first, fully engaged position, and a second, fully retracted position.

11. The hydraulic quick coupling as claimed in claim 1 wherein said structural components are separated or reset for a specific use or for transport.

12. The hydraulic quick coupling as claimed in claim 1 wherein one quick-coupling part is movable relative to the structural component to which it is attached.