Quick coupling with centering device
A technology of centering device and coupling, applied in mechanically driven excavators/dredgers, construction, earthmoving machines/shovels, etc., can solve problems such as damage, wear, infeasibility, etc., and achieve easy-to-achieve effects
Pending Publication Date: 2021-10-22
LEIBHERR HYDRAULIKBAGGER GMBH
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Due to the deflection of the movable power coupling part, coupling or coupling-in of the guide element becomes difficult or even impossible
Therefore, if the coupling is performed with force to overcome the misalignment, it may result in higher wear or damage
Method used
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Embodiment Construction
[0042] The preferred embodiment of the quick coupling according to the invention discussed below is basically the quick coupling according to EP 1 239 087 A1, in which case a centering device is additionally provided, which will be described in detail below. The elements and properties of the quick coupling according to the invention which are not described in detail below preferably correspond to one of the embodiments disclosed in EP1239087A1.
[0043]The quick coupling according to the invention comprises boom-side and tool-side quick coupling parts which can be reversibly locked to each other via a spaced apart, parallel pair of locking shafts. The quick coupling has a power loop coupling device comprising a tool-side power coupling part fixed to the tool-side quick coupling part and a boom-side power coupling part fixed to the boom-side quick coupling part. The tool-side power coupling part is movably mounted on the quick coupling part via a spring device 16 and is referr...
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The invention relates to a quick coupling for coupling a tool to a boom of a working device, comprising boom-side and tool-side quick coupling parts which can be locked to each other via two spaced-apart locking shafts; and a power loop coupling device for automatically coupling the tool-side power interface to the boom-side power interface. The power loop coupling device comprises boom-side and tool-side power coupling parts, the power coupling parts are moved towards each other on an annular track by common pivoting about a first locking axis and thereby automatically coupled to each other. At least one of the power coupling parts is movably supported. The quick coupler is provided with a centering device; the centering device holds the movable power coupling part in a central position irrelevant to its orientation and prevents movement in the absence of external forces and enables movement of the movable power coupling part in the case of automatic coupling on the basis of the external forces generated by the coupling process.
Description
technical field [0001] The invention relates to a quick coupling for coupling a tool to a boom of a working device according to the preamble of claim 1 and to a working device having such a quick coupling. Background technique [0002] Pivoting quick couplers are widely used in certain work equipment, such as hydraulic excavators, because they allow simple and quick exchange of various tools, such as hydraulic grab buckets, excavation buckets, pliers and similar devices. For coupling, first only one of the two locking shafts of the quick coupling has to be positioned and engaged. Advantageously, this can be a transverse pin which is hooked into a hook-shaped eye on the opposite quick coupling part. The quick coupling part on the boom side can then be pivoted relative to the tool about the engaged locking shaft in order thereby to reach a locking position in which the second locking shaft can be locked. The latter usually consist of a pair of locking bolts which can be sepa...
Claims
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IPC IPC(8): E02F3/96
CPCE02F3/96E02F3/3654E02F3/3663
Inventor T·齐特巴特R·格劳
Owner LEIBHERR HYDRAULIKBAGGER GMBH