Torsion protection adapter for mobile hose coupling systems

Abstract

Torsion protection adapter for mobile hose coupling systems, which is freely movable in conjunction with the connected hoses, characterized in that the outer part (1) and inner part (2) are held freely rotatable via a bearing arrangement (4) axially fixed by a snap ring (5) and have a sealing ring (3) to protect against contamination by media pressure.

Description

[0001] The technical field of the invention is the use of mobile, freely movable hose lines. Such hose lines are commonly used, for example, in irrigation, firefighting, or agriculture.

[0002] State-of-the-art axially locking fixed couplings of well-known standards (e.g., the "Storz" system) are used to connect these hose lines to each other and for extensions. Such couplings allow for easy connection of hose lines via a bayonet lock (with "lugs").

[0003] One-piece coupling-hose nozzle assemblies are known, in which the rotational movement of the coupling process is transferred directly to the hose. Arrangements are also known in which hose nozzles are secured by means of a union coupling ring during the coupling process, providing a positive fit in the axial direction and a friction fit in the radial direction. With the latter arrangement, twisting of the hose during the coupling process can be advantageously prevented. This technology has been proven in practice and is sufficient for temporary, stationary hose installation.

[0004] It becomes problematic when, in mobile hose applications, an unintentional twisting of the hose occurs after the actual coupling process. This occurs, for example, when pulling or dragging multi-part hose bends across the floor. Friction on the ground exerts uncontrolled torsional forces on the hose. This can cause creases that impair or completely prevent the flow of media. The latter can lead to a complete failure. Furthermore, pressure buildup poses a safety risk due to the hose bursting, resulting in system failure.

[0005] With this state of the art, reliable compensation of torsional phenomena under mobile operating conditions cannot be achieved.

[0006] The invention solves these problems by compensating for torsional phenomena under mobile operating conditions as disclosed in claim 1.

[0007] The drawing shows an embodiment that the inventor considers preferable for agricultural use. Here, the hose (09) is secured to an inner part (02) designed as a nozzle with a multi-part clamping ring (10). The outer part (01) is also designed with a connecting thread for adapting a commercially available rigid coupling. Any combination of nozzle or threaded connection is possible.

[0008] In any case, thanks to the bearing arrangement (04) between the outer part (01) and inner part (02), both connection sides of the torsion protection adapter can rotate freely against each other. This directly compensates for torsion phenomena and relieves the strain on the hose. As a result, the operational reliability and service life of the hoses used can be significantly improved. In addition, the functional functionality and the overall cable or towing length can be significantly extended, which leads to a significant increase in reach for the user. Furthermore, the round design protects the subsurface. The torsion protection adapter can slide and roll within the hose assembly without any protruding parts and prevents furrows from forming on loose soils / subsurfaces. When not in use, the design can be stored together with the hose line on existing reel devices as usual.

[0009] Due to its adaptability to existing coupling standards, the invention can be advantageously marketed both for new equipment and for retrofitting hose systems. List of reference symbols 1 outer part (capsule with threaded connection) 2 inner part (spout) 3 Sealing ring 4 bearing arrangement for axial and radial loads 5 Snap ring For positive fixing of bearing arrangement, grommet and capsule 6 scraper ring 7 threaded holes 8 Lubrication device 9 Hose 10 clamping ring, multi-part 11 connection threads 12 Fixed coupling

Claims

[1] Torsion protection adapter for mobile hose coupling systems, which is freely movable in conjunction with the connected hoses, characterized by that the outer part (1) and the inner part (2) are held so as to be freely rotatable by means of a bearing arrangement (4) which is axially fixed by a snap ring (5) and have a sealing ring (3) to protect against contamination by media pressure. [2] Torsion protection adapter according to claim 1, characterized by that one or more externally accessible, non-protruding lubricating devices (8) are provided. [3] Torsion protection adapter according to one of the preceding claims, characterized by that a scraper ring (6) is provided for protection against externally penetrating contaminants, which can be removed with at least one threaded pressure bore (07) for maintenance purposes or replacement. [4] Torsion protection adapter according to one of the preceding claims, characterized bythat the outer and inner parts are each designed optionally with a connection nozzle for a hose or a connection thread for the adaptation of a commercially available fixed coupling (12).

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