WO2003020432A1 - Dispositif d'arrosage comprenant une tete d'arroseur pivotable bidirectionnellement - Google Patents

Dispositif d'arrosage comprenant une tete d'arroseur pivotable bidirectionnellement Download PDF

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Publication number
WO2003020432A1
WO2003020432A1 PCT/EP2002/009306 EP0209306W WO03020432A1 WO 2003020432 A1 WO2003020432 A1 WO 2003020432A1 EP 0209306 W EP0209306 W EP 0209306W WO 03020432 A1 WO03020432 A1 WO 03020432A1
Authority
WO
WIPO (PCT)
Prior art keywords
sprinkler head
actuating element
hollow shaft
drive device
adjusting device
Prior art date
Application number
PCT/EP2002/009306
Other languages
German (de)
English (en)
Inventor
Christoph Schiedt
Original Assignee
Gardena Manufacturing Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gardena Manufacturing Gmbh filed Critical Gardena Manufacturing Gmbh
Priority to DE50212517T priority Critical patent/DE50212517D1/de
Priority to EP02769975A priority patent/EP1420889B1/fr
Publication of WO2003020432A1 publication Critical patent/WO2003020432A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/04—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet
    • B05B3/0409—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet with moving, e.g. rotating, outlet elements
    • B05B3/0418—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet with moving, e.g. rotating, outlet elements comprising a liquid driven rotor, e.g. a turbine
    • B05B3/0422—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet with moving, e.g. rotating, outlet elements comprising a liquid driven rotor, e.g. a turbine with rotating outlet elements
    • B05B3/0431—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet with moving, e.g. rotating, outlet elements comprising a liquid driven rotor, e.g. a turbine with rotating outlet elements the rotative movement of the outlet elements being reversible
    • B05B3/0436—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet with moving, e.g. rotating, outlet elements comprising a liquid driven rotor, e.g. a turbine with rotating outlet elements the rotative movement of the outlet elements being reversible by reversing the direction of rotation of the rotor itself

Definitions

  • Irrigation device with bidirectional swiveling sprinkler head Irrigation device with bidirectional swiveling sprinkler head.
  • the invention relates to a sprinkling device with a sprinkler head which can be pivoted bidirectionally relative to a fixed base about a pivot axis within a limited pivot angle range.
  • Such devices are used, for example, as sector sprinklers with a vertical pivot axis or as square sprinklers with a horizontal pivot axis.
  • the base can be designed as a stand, as an earth spike, as a recessed housing, etc.
  • the swivel angle range can typically be selected to be variable using an adjusting device.
  • the direction of the swivel movement is switched over automatically when one of two end positions of the swivel angle range is reached by means of an adjusting device, for example by a gear element is switched or the outflow direction is changed to an impeller.
  • an output gear of a reduction gear is coupled to a water-carrying hollow shaft of the sprinkler head via an O-ring slip clutch.
  • the direction of rotation of the pivoting of the sprinkler head is switched by changing the flow direction of a turbine.
  • US Pat. No. 5,383,600 describes a circular sprinkler in which a slip clutch is provided by an O-ring and the swiveling direction of the sprinkler head is switched while the direction of rotation of a turbine remains the same by switching a rocker switch at the output of the transmission.
  • a mechanical changeover of a gear rocker is also found in a sprinkler according to US Pat. No. 4,901,924, where adjustment of the sector width of a sprinkling sector is possible independently of the angular position of the sprinkler head by means of special elastic driver means.
  • the object of the present invention is to provide a sprinkling device of the type mentioned in the introduction, which provides advantageous measures against damage in the event of incorrect handling.
  • the adjusting device can therefore generally tolerate mishandling of the type described in the introduction.
  • the ability of the actuating element for non-destructive disengagement from the receptacle can also be used for a targeted manual adjustment of the swivel angle and / or the alignment of the sprinkler head with respect to the base.
  • the setting device can be rotated further directly or via the sprinkler head, in particular in order to return the receptacle to the actuating element, which then engages again in the receptacle and assumes its regular operating position.
  • the adjustment device can be rotated further by hand or under the influence of the drive device, for which purpose the actuating element, advantageously in disengaged form, slides over the circumferential surface of the adjusting device with little tangential force on the actuating element in comparison to the switching force until it radially returns into the receptacle engages.
  • the rotatability by hand can be exploited when assembling the sprinkler device, in that the adjusting device is in a mounting position rotated relative to the operating position, which is a disengaged position of the actuating element, without contacting or displacing the actuating element against the attachment.
  • Drive device is attached and the receptacle is brought to the actuating element by turning the adjusting device.
  • the actuating element is a rod-shaped, inherently flexurally elastic part, preferably a spring steel wire, which is moved essentially tangentially with respect to the adjusting device in order to switch the pivoting direction and radially out of the way with a slight elastic deflection against an inserting restoring force Can disengage the recording
  • the elastic deformability can also be advantageously used during the switchover, in that the actuating element is elastically deformed during the movement tangential to the pivot axis until a switchover threshold force is overcome and undergoes a bracing, which ensures a quick complete switchover when the switchover threshold is reached .
  • the actuating element is to be dimensioned such that the switching threshold force is reached in the case of a specific deflection.
  • the deflection is preferably less than ⁇ 15 °, in particular less than ⁇ 10 ° on both sides of the central position.
  • the actuating element is advantageously mounted such that it can be tilted transversely to its longitudinal extent, the tilting position preferably lying in the middle third of the longitudinal extent, in particular approximately at half its length.
  • a safety measure is expedient, which can be provided by limiting the torque that can be transmitted between the drive device and the sprinkler head.
  • a torque limitation is known from EP 0 362 559 B2 in the form of an overload clutch engaging axially under the action of a compression spring.
  • part of such an overload safety device is formed on a hollow shaft of the hollow shaft, which transmits the pivoting movement from the drive device to the sprinkler head.
  • the rotary coupling is advantageously provided by interlocking structures on the hollow shaft that are parallel to the swivel axis on the one hand and a countershaft that engages with it by axial plugging on the other hand.
  • the countershaft is preferably, as assumed below, an output shaft at the transmission output of the drive device.
  • the countershaft can also be present in the sprinkler head and can engage with a hollow shaft connected to the sprinkler head.
  • the hollow shaft engages in the countershaft advantageously by axially plugging the hollow shaft onto the countershaft.
  • the overload protection is preferably provided in that parts of the interlocking structures are designed as radially elastically yielding segments with engagement structures parallel to the pivot axis.
  • the response torque of the overload protection device can be adapted to an individual combination of sprinkler head and drive device, for example, by the number and size of the elastically yielding segments and / or by the depth of engagement of the interlocking structures, such adaptation measures also being able to be distributed between the hollow shaft and the counter shaft.
  • a particularly advantageous construction of a sprinkling device from a drive device, a sprinkler head pivoted about a pivot axis by the latter, which is held axially directly and without mediation of the adjusting device inserted axially between the sprinkler head and drive device, enables, on the one hand, a cost-effective modular construction from the number of individually different combinations small number of separately prefabricated modules, which can be put together with little effort into the finished combinations in their individual combination variety, in particular in the case of a one-piece device which surrounds the hollow shaft connecting the sprinkler head and drive device without its own axial mounting.
  • the hollow shaft is formed on the sprinkler head module and is inserted in a receptacle of the drive device in the axial direction and is held axially relative to the drive device by corresponding holding means provided on the hollow shaft and / or drive device.
  • the equivalent variant, that the hollow shaft is formed on the drive device and is inserted axially into a receptacle of the sprinkler head, is implicitly included and is therefore not dealt with separately in the following.
  • the holding means are provided on the part of the drive device by a locking washer, through the central opening of which the hollow shaft is inserted with the spring tongues of the locking washer spreading radially inwards.
  • the spring tongues are supported against the axial pull-out direction on the outer surface of the hollow shaft and thus place them axially with respect to the drive mechanism. direction firmly.
  • Axial fixing can also be done by a snap or snap connection or the like.
  • the hollow shaft is inserted through the ring opening of the adjusting device, which is preferably formed without a separate axial holding means for the sprinkler head and the drive device and is enclosed axially between the sprinkler head and the drive device solely by fixing the hollow shaft in the drive device.
  • the insertion depth of the hollow shaft can be limited by an axial stop of the sprinkler head on one side and the drive device on the other side of the adjustment device, with different adjustment devices then having the same axial extent in the stop area.
  • the ring opening of the adjusting device preferably surrounds the hollow shaft directly. However, the insertion depth can also be given by a direct axial stop of the sprinkler head on the housing of the drive device.
  • a plurality of different adjusting devices and several different sprinkler heads can advantageously be combined to form different irrigation devices with a uniform drive device, wherein, in turn, a plurality of sprinkler heads can be used with at least one of the several adjusting devices.
  • All sprinkler heads have the same structure with regard to the connecting elements with the drive device, in particular those with the holding means of the drive devices engaging elements of the sprinkler heads, the means for sealing the hollow shaft against the housing of the drive device and the rotary coupling elements are the same or at least compatible with the unitary drive device.
  • several drive devices can also be included in the series in such a way that different drive devices can be combined with one sprinkler head.
  • Fig. 1 is an oblique view of a drive device
  • FIG. 2 shows a longitudinal section through FIG. 1
  • Fig. 3 is an axial view in the receptacle for the sprinkler head
  • Fig. 4 is a view of an inlet-side nozzle plate against the inflow direction
  • FIG. 5 shows a section through FIG. 4
  • Fig. 6 is a view of a switchable swirl plate in the direction of flow
  • Fig. 7 is a view of the switchable swirl plate according to Fig. 6 against the flow direction 8 shows a sprinkler arrangement with drive device, adjusting device and sprinkler head (without shown gear elements and turbine)
  • Fig. 9 is a spring washer for axially fixing the sprinkler head
  • Fig. 10 shows an output shaft of the drive device in longitudinal section
  • Fig. 11 is a view of the output shaft of FIG. 10 in the axial direction
  • Fig. 12 is an axial plan view of an adjusting disc of an adjustment direction
  • FIG. 13 shows a section through FIG. 12
  • FIGS. 13 and 14 shows an adjusting element for the adjusting disk according to FIGS. 13 and 14
  • FIG. 16 shows a complementary disk to the adjusting disk according to FIG. 15
  • the drive device sketched in FIG. 1 in an oblique view with the housing HO partially cut open and in FIG. 2 in a sectional plane containing the main axis contains, in a manner known per se, an input-side impeller TU known as a turbine, a speed-reducing and torque-converting gear GE and an output shaft AW, the rotation of which is coupled with the pivoting of a sprinkler head about a pivot axis.
  • the pivot axis SA of the sprinkler head which is also the axis of rotation of the output shaft, advantageously coincides with the axis of rotation DA of the turbine ne TU together, which then together form a main axis of the drive device and enable a particularly compact structure of the drive device.
  • the drive device is flowed through by the water which is discharged via the sprinkler head and is driven by at least part of the water.
  • the main flow direction runs in the main axis direction from the side of the turbine to the outlet opening at the output shaft.
  • the housing HO of the drive device has an essentially circular cylindrical outer contour and is closed on the input side by an input plate EP and on the output side by a cover GD. In the example shown, the cover is made in one piece with the outer side wall.
  • the housing HO of the drive device is typically inserted into the sprinkler housing of a sprinkler device.
  • the entire surface of the input plate EP is supplied with water from a pressurized water source, in particular a motor pump or a public piped water supply.
  • the inlet plate has three inlet openings EA, which are grouped uniformly around the axis of rotation DA of the turbine TU, and which are followed by guide channels DKO of a nozzle plate KP in the axis-parallel direction.
  • Inlet plate EP and nozzle plate KP are fixed to one another and to the housing HO.
  • the flow path of the water flowing through the inlet openings EA continues after the axially parallel channels DKO of the nozzle plate KP in nozzle channels DKR or DKL of a switchable swirl plate DP.
  • the flow directions of the nozzle channels DKR or DKL are inclined towards the main axis in such a way that the flow is perpendicular to the axis of rotation DA of the turbine and tangential with respect to a circle around this axis of rotation DA has directed flow component, this flow component being directed in the same direction within a first group of nozzles DKR and in the opposite direction to the second group of nozzles DKL.
  • the nozzle channels DKR, DKL are preferably set tangentially obliquely against the main axis direction.
  • the swirl plate DP can be switched between two stable end positions in such a way that the swirl plate in a bearing SL can be rotated by a small angle about the axis of rotation DA relative to the nozzle plate KP and in a first end position the inputs of the first group of nozzle channels, in the second End position the second group of nozzle channels DKL are in the extension of the guide channels DKO of the nozzle plate KP, so that depending on the end position assumed by the swirl plate DP, only one of the two nozzle groups DKR or DKL is flowed through and the tangential component of the water emerging from the swirl plate can thereby be switched over is.
  • the swirl plate DP is latched with the central bearing recess onto the bearing journal designed as a slotted sleeve on the nozzle plate and is held axially by latching projections.
  • the nozzle plate has a projection KV which points radially outwards and which is essentially secured against rotation in one Housing guide is inserted.
  • the swirl plate DP has a corresponding radial projection DV, which likewise lies in the housing guide mentioned, but which has a smaller width than the housing guide and remains for mechanical elements such as the spring tongues FU and also the receptacle BA for the actuating element.
  • the turbine wheel TU is preferably pressed onto the turbine shaft TW just like a first transmission gearwheel in the transmission.
  • the flow against the turbine wheel via at least three nozzle channels DKL, DKR, which are evenly distributed around the axis of rotation DA, is of particular advantage in relation to the bearing load on the first shaft bearing TLU of the turbine shaft, since the balanced force effect means that hardly any transverse forces act on the radial slide bearing Shaft bearing TLU occur.
  • the frictional forces when the turbine wheel starts up are very low, which is particularly important in particular at low pressure and / or low flow.
  • the first bearing TLU of the turbine shaft is advantageously located in the axial direction in the region of the axial extension of the turbine wheel TU or at most by the amount of this extension beyond the turbine wheel.
  • the turbine shaft TW is advantageously of small diameter, in particular less than 2 mm, and is advantageously made of stainless steel.
  • the impeller has a narrow, annular contact surface around the turbine shaft, with which the impeller can be supported on the gear housing against the axially acting inflow forces.
  • the turbine shaft can additionally be mounted in an axially spaced second shaft bearing TLO.
  • the good force balance of the turbine wheel with respect to the axis of rotation DA due to the uniform distribution of the at least three nozzle channels advantageously also has the consequence that in the second turbine bearing TLO there are almost no lateral loads and so that only very low frictional forces occur.
  • the diameter of the blade circle of the turbine wheel is very large compared to the diameter of the turbine shaft and is preferably at least ten times the diameter of the turbine shaft.
  • a pressure-dependent bypass flow path is provided, for which in Outlined example, the input plate EP has a central opening OE, against which a stamp BT is pressed against the water pressure by a spring FE.
  • the stamp BT closes the opening OE completely and water flows only via the guide channels DKO and nozzle channels DKL or DKR and the turbine to the outlet AU of the housing HO of the drive device.
  • the stamp BT is lifted from the opening OE and an increasing proportion of water flows bypassing the turbine, in particular in water channels close to the wall, to the outlet AU of the housing.
  • the speed-reducing gear between the turbine TU and an output shaft is advantageously not exposed to the water flow and thus against damage caused by dirt particles that get between tooth flanks and gear wheels and depending on the gear stage to block the Drive or damage to gear elements can be protected.
  • the gearbox is housed in a GH gearbox.
  • the gearbox housing is closed in one direction by a cover GT with an outlet opening AO after the gearbox elements have been mounted in the gearbox housing.
  • a watertight encapsulation of the gear unit is not required; a dirt-proof seal against the water flow is sufficient.
  • This enables an advantageous coupling of the output shaft of the drive device, sketched in detail in a preferred embodiment in FIGS. 10 and 11, to the last gear stage, in which a high torque can occur, in such a way that the gear housing GH to the output shaft AW in the housing cover GT has an output or output opening AO, through which a gear element fixed to the output shaft, preferably connected in one piece, in particular a gearwheel ZW engaging in the last stage of the gear, projects into the gear housing, whereas coupling elements ZK of the output shaft for coupling to a sprinkler head lie outside the gearbox.
  • the opening AO of the gearbox housing has an upper edge OK facing the output shaft, which runs in a plane perpendicular to the pivot axis SA, about which the output shaft can be rotated bidirectionally.
  • the output shaft contains a carrier plate TR with a sliding surface GF running in a plane perpendicular to the pivot axis SA.
  • the output shaft is guided with the side of the gearwheel ZW through the opening, which is preferably circular about the swivel axis SA, the gearwheel ZW engaging in the last gear stage, and rests with the gear surface GF on the upper edge.
  • the radius of the sliding surface is larger, that of the gear ZW smaller than that of the opening AO.
  • the output shaft is advantageously permanent due to a pressing force acting parallel to the swivel axis with the sliding surface GF against the upper edge OK of the gearbox.
  • housing GH pressed, without an additional connection of the output shaft and gear is required.
  • the sliding surface GF and the circumferential upper edge OK seal the gear housing sufficiently at this position against dirt carried in the water flow.
  • a centering stage OS which points from the plane of the sliding surface GF to the gearwheel ZW, centers the output shaft with little play in the opening AO.
  • the end of the turbine shaft facing away from the turbine TU can be held laterally in a central shaft guide of the gearwheel ZW.
  • the pressing force of the sliding surface GF of the output shaft against the upper edge OK of the opening AO advantageously takes place in that the output shaft is supported against the housing cover which closes the housing of the drive device toward the sprinkler head with the interposition of an element which is elastically deformable parallel to the direction of the pivot axis.
  • An additional sliding washer is advantageously inserted between the housing cover GD and the output shaft.
  • An arrangement is particularly advantageous in which such an elastic element comprises an annular seal RD, in particular a lip seal, which surrounds the outlet opening AU of the housing HO which additionally surrounds a hollow shaft HW leading to the sprinkler head and connected to its pivoting as a mechanical seal.
  • the output shaft AW advantageously contains coupling elements on which driver structures parallel to the swivel axis are formed.
  • Counter structures on a hollow shaft of a sprinkler head can engage in the driver structures by simply plugging the hollow shaft in the axial direction of the swivel axis SA and thus produce a rotary coupling between the output shaft and the sprinkler head.
  • the rotary coupling between the output shaft and the sprinkler head advantageously has an overload safety device, preferably in the form of a torque limiter, in order to avoid damage, in particular if the direction of movement is incorrectly handled, by violently manually turning the sprinkler head against the drive device.
  • an overload safety device preferably in the form of a torque limiter
  • the structure given below yields radially and elastically when a threshold predetermined by the dimensioning of the structures is exceeded, thereby preventing damage to the sprinkler head, the interlocking structures or the gearbox.
  • the torque threshold can advantageously be adapted to the respective sprinkler head type by varying the engagement depth of the structures by designing the counterstructure on the part of the sprinkler head or the hollow shaft connected to it in a rotationally fixed manner, or the axial engagement length. Will the Segmentation carried out on the hollow shaft, so the elastic parameters of the segments are still available for adaptation.
  • a constant toothing on the side of the drive shaft can provide a maximum engagement depth and, by flattening the tooth tips while maintaining the depth of the tooth base of the counter-toothing of an axially attached hollow shaft, the radial displacement of the flexible elements of the structures necessary for triggering the overload protection and thus the transferable Torque can be varied.
  • the output shaft outlined in FIGS. 10 and 11 has, as a driver structure, a tooth structure ZK parallel to the swivel axis and pointing radially inwards on a plurality of cylinder wall segments ZA, offset in the example from three by the same angle about the swivel axis.
  • a counter structure in the form of an external toothing HZ of a hollow shaft HW of a sector sprinkler head SR (FIG. 8) does not take place over the entire axial length of the segments ZA, so that the segments are exceeded by elastic radial bending around their segment base on the carrier disk TR of the output shaft a torque threshold between the output shaft and sprinkler head act as overload protection by torque limitation.
  • the segments are clearly spaced from each other and allow a large flow cross-section to flow through the water into the hollow shaft leading to the sprinkler head.
  • the hollow shaft is sufficiently removed from the base of the segment when plugged on.
  • the segments can also be formed on the hollow shaft.
  • a hollow shaft HW inserted into the receiving opening AU of the drive device has a smooth outer surface, at least in the area of the ring seal RD, preferably in the form of a circular cylinder jacket which is in contact with the Ring seal forms a sliding sealing surface, wherein the ring seal, as described, can advantageously also serve as an elastically deformable element in the direction of the pivot axis for generating an axial pressing force of the output shaft support plate on the output opening of the gear housing.
  • a seal between the hollow shaft HW and the housing HO of the drive device can also be provided by other sliding seal arrangements, in particular also by an annular seal which is firmly connected to the hollow shaft and which slides on a smooth surface of the housing HO in the region of the outlet opening AU.
  • FIGS. 10 and 11 additionally has support wall sections EZ, which run from the carrier plate TR to the outlet opening AU, preferably parallel to the pivot axis, as cylinder jacket segments, by means of which the output shaft counteracts, preferably with the interposition of further elements axially supports the housing cover GD.
  • the other elements can in particular comprise a sliding washer GS, which on the one hand abuts the ring seal and on the other hand has a sliding surface with a very low sliding friction resistance pointing towards the output shaft.
  • the support wall sections of the output shaft can slide directly on this sliding surface.
  • a preferably metallic locking washer SS with a radially outer sliding ring surface SG and from which radially inward and axially inclined to the output shaft spring tongues SZ is inserted between the sliding washer and supporting wall sections EZ.
  • the clear space enclosed by the spring tongues is smaller than the outer cross section of the hollow shaft.
  • the direction of rotation of the hollow shaft must be switched over when the respective swivel angle limit is reached, which, as described, is preferably achieved by switching the flow direction from the nozzle channels DKL or DKR to the turbine TU.
  • an adjusting device which contains limiting elements for the swivel angle range, is provided on the side of the outlet opening AU and thus separated from the swirl plate DP to be switched by the gearbox outside the housing AO of the drive device, and the switchover is effected by bridging the axial distance between the adjusting device and swirl plate Actuator BE.
  • This actuating element is preferably mounted such that it can be tilted transversely to its longitudinal direction in a central region, in particular between 30% and 70% of its axial length from the switchable swirl plate.
  • the movement of the actuating element preferably takes place both tangentially with respect to the swivel axis SA and the turbine axis of rotation DA both in the one-piece device and in the swirl plate DP.
  • the actuating element is a rod-shaped element which is essentially parallel to the axes SA and DA and which can be sealed in a particularly simple manner through a housing opening SO and with a section facing the setting direction outside and a section facing the swirl plate DP within the HO runs. The tilting movement takes place in the housing opening SO.
  • the actuating element is preferably held straight between swirl plate DP and adjusting device and with a holding section in the receptacle BA of the swirl plate.
  • the force transmission path from the stop of the sprinkler head to a limiter element of the actuating device up to the rotation of the swirl plate DP advantageously for each direction of switch an elastic force storage element, which absorbs an elastic deformation over a deformation path until the switchover threshold is overcome, which brings about a rapid switchover to the other end position when the switchover threshold is reached.
  • This energy storage is preferably carried out by the fact that the actuating element can be deformed to such an extent that when the sprinkler head strikes a limiter element of the adjusting device, it is deformed to a pretension until the switching threshold force is reached, and after the switching threshold has been overcome, the elastic restoring force and the return path are overcome quickly move the swirl plate to the other end position.
  • the actuating element BE is a spring steel wire which is dimensioned in accordance with the above requirements in such a way that it is elastically bent until the changeover threshold is reached and, after the changeover threshold has been overcome, a quick changeover takes place by resetting to the straight starting form.
  • the required deflection and spring force can be set by choosing the material and the wire thickness.
  • the spring steel wire used as the actuating element has a long end axially parallel section on the swirl plate DP has a short bent section which engages in the receptacle BA of the swirl plate.
  • the wire section facing the adjusting device EE runs outside the housing HO in a housing recess GZ radially set back against a circular cylindrical envelope.
  • this can also be pivotable about its axis parallel to the main axis of the drive device.
  • this can also be pivotable about its axis parallel to the main axis of the drive device.
  • An embodiment is particularly advantageous in which the actuating element lies in a receptacle MA of a driver element of the adjusting device and, on the one hand, remains in the receptacle MA within the force acting on the actuating element to switch over, but on the other hand when the driver element is larger Force can disengage non-destructively from the holder MA with further elastic deformation.
  • FIGS. 12 and 13 A first advantageous embodiment of a one-piece device is outlined in FIGS. 12 and 13.
  • the driver element is designed as a shim with a central recess MO surrounding the hollow shaft HW of the sprinkler head, as shown in FIG. 8, which has limiter elements LE along a structured circumference MU, e.g. movable tab of the type sketched in Fig. 14 can accommodate.
  • Two such delimiting elements enclose an angular range between them, within which a stop element connected to the sprinkler head is movable. When the stop element strikes one of the limiter elements, the adjusting disk MS is also rotated about the axis SA.
  • the shim has a receptacle MA for an actuating element, in particular a spring steel wire with a tangential tilting movement for the changeover, which, if appropriate with slight radial prestress, lies in the receptacle MA.
  • the receptacle MA is designed as a radial indentation and has radially outwardly extending side flanks which are spaced and / or shaped such that jamming of the actuating element is precluded. In the rest position of the actuating element, this runs approximately parallel to the pivot axis SA.
  • the actuating element When the actuating element is tilted symmetrically to a center plane containing the pivot axis SA, the actuating element has two rest positions corresponding to the end positions of the swirl plate, in which the longitudinal axis of the actuating element is inclined slightly in each case towards the center plane.
  • the stop element abuts against a limiting element, the actuating element is moved towards the center plane through the receptacle MA and possibly also over these are pushed out and deformed elastically until the force at the other end of the actuating element is sufficient to overcome the switching threshold.
  • the pivoting direction of the sprinkler head is reversed and the stop element moves away from the limiter element, so that the adjusting disk is put into the new rest position by the actuating element.
  • the actuating element moves radially out of the holder MA.
  • FIGS. 16 shows a two-disk arrangement of the one-part device, a first disk MS1 again having the receptacle MA and now carrying a first, permanently positioned limiter element LEF at a fixed circumferential position, for example as outlined in the receptacle MA from the disk plane.
  • a second disk MS2 is arranged coaxially to the first disk and has a second limiter element LEV in the plane of the first limiter element and at the same radius as this.
  • the second disk is angularly adjustable relative to the first disk about the pivot axis SA and, for example, frictionally connected to it or, as sketched in FIG. 16, is provided with a ring gear MK, in which a toothed actuating shaft accessible to the user engages, via the rotation of which the angular position of the second disc is adjustable in order to obtain a variable swivel angle range between the two limiter elements LEF and LEV, but one area limit with respect to the housing HO being fixed.
  • Exactly one receptacle MA is provided for the actuating element BE in the setting disk MS according to FIGS. 12 and 13 as well as in the first disk MS1 according to FIG. 15.
  • the actuating element lies against a circumferential surface UF and slides along it with low sliding friction force until the receptacle MA comes to the actuating element when the disk MS or MS1 is further rotated and it engages there, after which regular operation of the movement device is possible again.
  • the further rotation can take place either under the action of the drive device or manually.
  • the peripheral surface in the examples outlined, as can be seen in particular from FIG. 15, is not concentric to the pivot axis DA and, preferably radially opposite the receptacle MA, has a radial distance R1 from the pivot axis SA that is smaller than the radial distance R2 of the receptacle MA.
  • the drive plate of the one-piece device can also have a plurality of such receptacles, which are arranged at an angle to one another, for the actuating device. contain element, which then not only serve as a safeguard against excessive application of force, but also allow a quick manual adjustment of the orientation of the sprinkler head.
  • the circumferential surface UF in order to enable an automatic continuation with the actuating element disengaged from the receptacle MA under the action of the drive device, is designed without steps or steep flanks in the course of the pivot axis, so that when the actuating element disengaged from the receptacle due to incorrect handling, the circumferential surface UF no tangential driving force overcoming the switching threshold acts on the actuating element until it engages again in the receptacle and, when the sprinkler head continues to pivot, causes a switchover at the regular angular range limit by contacting a steep side flank of the receptacle.
  • the peripheral surface can, for example, be circular, offset eccentrically (EX) in the direction of the receptacle against the pivot axis SA.
  • an adjusting device in particular for square sprinklers, in which the angle of violent rotatability is limited by the housing structure, can be advantageous in an adjusting device in which two adjusting segment disks, which can be adjusted as a reference position over a limited angular range around the pivot axis, also include one limiting element each are provided, which are connected to one another in a friction-locking manner and are angle-adjustable relative to one another by overcoming the frictional force.
  • One of the segment disks has, along a circular arc around the pivot axis, a series of recordings of the type described, which can serve for the stepwise adjustability of the associated limiter element with respect to the actuating element.
  • the second segment disc can be the same series of Have receptacles, but is preferably designed entirely without a receptacle for the actuating element and transmits the force occurring when the regularly pivoted sprinkler head strikes the associated limiter element via the frictional engagement on the first segment disk and via this to the actuating element for switching over the pivoting direction.
  • a violent rotation of the sprinkler head then leads when the actuating element is disengaged from a receptacle to be inserted into the next receptacle and thus only to adjust the selected swivel angle limit of the first segment disk, which can be corrected again by actuating this segment disk.
  • Particularly advantageous for sprinkler heads for square sprinklers as well as for pivoted sector sprinklers is the option of being able to freely select the setting device for defining an angular range and to insert it when assembling a sprinkling device without separate fastening means between the sprinkler head and drive device, where the setting device can be axially locked by locking the Hollow shaft of the sprinkler head is set and its regular polar position about the pivot axis is predetermined by the receptacle MA and the position of the actuating element.
  • one and the same drive device can be provided for different types of sprinkler heads, which only match in the outer cross section of the hollow shaft and must be compatible with the coupling structure of the output shaft in the counter structures formed thereon.
  • the assembly of a movement device is particularly simple and inexpensive, in that a selected sprinkler head with the interposition of an adjusting device on the Hollow shaft with the hollow shaft is inserted into the output opening of the housing of the drive device.

Landscapes

  • Nozzles (AREA)
  • Catching Or Destruction (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Abstract

L'invention concerne un dispositif d'arrosage comprenant une tête d'arroseur pouvant pivoter de manière bidirectionnelle par rapport à un socle fixe, autour d'un axe de pivotement, dans une zone angulaire de pivotement délimitée. Des mesures de sécurité ont été prévues pour empêcher que ladite tête d'arroseur ou un dispositif de réglage n'effectue des mouvements de rotation violents. Selon une de ces mesures, un élément d'actionnement (BE) conçu pour inverser un mécanisme de commande est accouplé à un dispositif de réglage déterminant la zone angulaire de pivotement de manière à ce que, d'une part cet élément d'actionnement (BE) soit, lors d'un fonctionnement régulier, logé dans un logement (MA) du dispositif de réglage et effectue des mouvements d'inversion, et d'autre part, puisse sortir de façon réversible et non destructive dudit logement (MA) en cas de rotation manuelle du dispositif de réglage. De préférence, l'élément d'actionnement (BE) est un fil d'acier à ressort. Une autre mesure de sécurité concerne une configuration particulièrement avantageuse d'un dispositif de protection contre une surcharge de couple.
PCT/EP2002/009306 2001-08-29 2002-08-21 Dispositif d'arrosage comprenant une tete d'arroseur pivotable bidirectionnellement WO2003020432A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE50212517T DE50212517D1 (de) 2001-08-29 2002-08-21 Beregnungsvorrichtung mit bidirektional schwenkbarem Regnerkopf
EP02769975A EP1420889B1 (fr) 2001-08-29 2002-08-21 Dispositif d'arrosage comprenant une tete d'arroseur pivotable bidirectionellement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10142145A DE10142145A1 (de) 2001-08-29 2001-08-29 Beregnungsvorrichtung mit bidirektional schwenkbarem Regnerkopf
DE10142145.1 2001-08-29

Publications (1)

Publication Number Publication Date
WO2003020432A1 true WO2003020432A1 (fr) 2003-03-13

Family

ID=7696877

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/009306 WO2003020432A1 (fr) 2001-08-29 2002-08-21 Dispositif d'arrosage comprenant une tete d'arroseur pivotable bidirectionnellement

Country Status (5)

Country Link
EP (1) EP1420889B1 (fr)
AT (1) ATE401129T1 (fr)
DE (2) DE10142145A1 (fr)
ES (1) ES2310606T3 (fr)
WO (1) WO2003020432A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7028920B2 (en) 2004-03-10 2006-04-18 The Toro Company Adjustable arc sprinkler with full circle operation

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2907349B1 (fr) * 2006-10-24 2009-01-23 Yuan Mei Corp Structure d'arroseur a fonctions multiples
EP2383042B1 (fr) * 2010-04-29 2013-08-14 Yuan Mei Corporation Passage d'eau pour arroseur rotatif intégré

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4892252A (en) * 1988-11-03 1990-01-09 L. R. Nelson Corporation Adjustable part circle sprinkler assembly
US4901924A (en) 1988-04-19 1990-02-20 Kah Jr Carl L C Sprinkler device with angular control
US5031833A (en) 1986-09-21 1991-07-16 Moshe Gorney Sprinkler
US5383600A (en) 1993-10-25 1995-01-24 Anthony Manufacturing Corp. Vandal resistant part circle pop-up gear driven rotary irrigation sprinkler
US5695123A (en) * 1995-10-16 1997-12-09 James Hardie Irrigation, Inc. Rotary sprinkler with arc adjustment device
EP0362559B2 (fr) 1988-10-06 1998-01-07 GARDENA Kress + Kastner GmbH Dispositif d'entraínement pour dispositif d'arrosage ou dispositif similaire

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5031833A (en) 1986-09-21 1991-07-16 Moshe Gorney Sprinkler
US4901924A (en) 1988-04-19 1990-02-20 Kah Jr Carl L C Sprinkler device with angular control
EP0362559B2 (fr) 1988-10-06 1998-01-07 GARDENA Kress + Kastner GmbH Dispositif d'entraínement pour dispositif d'arrosage ou dispositif similaire
US4892252A (en) * 1988-11-03 1990-01-09 L. R. Nelson Corporation Adjustable part circle sprinkler assembly
US5383600A (en) 1993-10-25 1995-01-24 Anthony Manufacturing Corp. Vandal resistant part circle pop-up gear driven rotary irrigation sprinkler
US5695123A (en) * 1995-10-16 1997-12-09 James Hardie Irrigation, Inc. Rotary sprinkler with arc adjustment device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7028920B2 (en) 2004-03-10 2006-04-18 The Toro Company Adjustable arc sprinkler with full circle operation

Also Published As

Publication number Publication date
DE50212517D1 (de) 2008-08-28
ES2310606T3 (es) 2009-01-16
ATE401129T1 (de) 2008-08-15
EP1420889B1 (fr) 2008-07-16
DE10142145A1 (de) 2003-03-20
EP1420889A1 (fr) 2004-05-26

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