EP0362559B2 - Actuating device for a sprinkler or the like - Google Patents

Abstract

In an actuating device (1) for a transportable sprinkler or the like, a water motor (11) has a reducing gear unit (19), whose gear or toothed wheels (41, 42, 43) are located outside the water guide in a separate gear chamber (19) and are therefore dry, the gear chamber (19), however, being integrated into the housing (12) of the water motor (11) in such a way that it is arranged adjacently next to a reversing chamber (23) which serves to guide the water, in which reversing chamber a reversing valve (22) of a reversing device (21) for the alternating reversal of the water motor (11) in both directions of rotation is accommodated. The water motor (11) is input-connected via an output pinion (44) to a carrier (5), a self-engaging overload clutch (77) being arranged in the drive connection. A bypass water guide (86) which works in a pressure-dependent manner and has simple flap valves is additionally provided between the reversing chamber (23) and a rotor chamber (26) which adjoins this axially as well as adjoining the gear chamber (20). Combined with an extremely compact design of the water motor (11) a high functional reliability is thereby produced. <IMAGE>

Description

The invention relates to a drive device according to the preamble of claims 1 and 7. It expediently has a liquid or flow drive in particular in that at least part of that with the sprinkler water to drive to drive at least a movement of the irrigation device or Like. Is used. For this purpose it is in one Housing provided a liquid guide, which a drive rotor is suspended, which may the desired movement function via a gear executes so that there are beneficial effects surrender. Such irrigation devices are well known.

The drive rotor is in the form of a turbine wheel as well as the gearbox within a nozzle housing and within the water supply, the gearbox runs constantly in a water bath. The gearbox can be mounted on a hollow axle attached bracket immediately behind the turbine wheel be stored and within the water-filled Engage the housing in an internal ring gear, which is connected to the housing. Thereby the result is a very advantageous irrigation device with the drive device a back and forth going movement over a stepless adjustable distance and also a sprinkler almost a rectangular field possible is.

The invention is further the object to avoid disadvantages of known solutions and in particular a drive device of the kind mentioned, which create a further improved functionality and in particular enables a particularly compact design.

The features are to solve this task of claim 1 suitable. The gear is essentially from the water-bearing areas shifted out and preferably in one separate gear chamber arranged so that its output element, for example an output pinion, without special sealing problems and therefore Accessible to save space for operator intervention can be made. There is also pollution of the gearbox due to water contamination avoided, and it is a particularly smooth-running Gearbox running through a lubricant or by using self-lubricating materials for reaching the gear wheels.

The transmission is useful in a cross section essentially circular section-shaped gear chamber arranged over an arc angle can extend from less than 180 °, so that it takes up very little space. The Gearbox chamber is appropriate on the outer circumference from part of an axisymmetric or approximately cylindrical housing shell and inside this housing jacket by a for example approximately level and to the housing axis limited approximately parallel partition, so that the remaining, possibly larger part of the interior of this Housing jacket for the water supply available stands. The gear chamber is on the front Cross walls closed, in which all transmission axes can be supported and the appropriate over the entire inside width of the casing go through, but in the area of the next the water-bearing transmission Chamber for the passage of water with appropriate Openings are provided.

The latter, water-bearing chamber, which are at least partially essentially the same Longitudinal section of the housing like the gear chamber can also be used for accommodation further functional parts of the drive device be used. Is preferred within this chamber a changeover valve or the like Switching device housed with which the Drive rotor or the output pinion of the transmission alternating in both directions can be driven by that a switching element depends on the rotation by the movement generated by the drive device is converted. The said longitudinal section the case is in at least one drying chamber separated from the water supply and at least one water-bearing wet chamber divided, with corresponding in each chamber Functional parts can be accommodated. As a result, as well as the arrangement of the changeover valve directly adjacent to the housing axis not only the length of the gearbox of the water motor, but also its width or diameter are significantly reduced, such that its outer diameter is approximately in the Magnitude of its length, namely around 50 mm, lies.

A chamber accommodating the drive rotor expediently closes in the longitudinal direction of the housing directly to the mentioned longitudinal section forward, i.e. towards the water flow, at, this rotor chamber from the side by side adjacent to each other Chambers through the associated, continuous Transverse wall can be separated, in which the Drive rotor is to be stored. The prime mover is appropriately supported with a very thin shaft, which is sealed in the transverse wall and in drive engagement within the gear chamber with the gearbox.

In a further embodiment of the invention Drive rotors arranged axially parallel to the housing eccentric to the housing or the rotor chamber located in the housing axis arranged, its outer diameter opposite corresponding to the inside width of the rotor chamber is smaller. This allows the rotor axis of the Drive rotor on the one hand close to the transmission axes can be relocated and on the other hand between which is further away from the outer circumference of the Drive rotor lying area of the housing shell and the drive rotor drive nozzles or Associated nozzle channels housed space-saving or formed with a relatively large cross section will.

The axial extent of the rotor chamber needs only slightly larger than that of the drive rotor to be during the axial extension of the in the longitudinal direction adjoining, cross-divided Chambers only about the size of the associated one Gearbox length needs to be. In the area of the rotor chamber can also the housing a smaller outside width than in the area of the gear chamber have, so that the rotor chamber of an end cap closing it with a Ring collar can be encroached on its outside width equal to that of the housing in the area the gear chamber is. This allows the water motor in a very simple way than self-contained Assembly only by plugging in in a substantially cylindrical receptacle to be assembled.

The gearbox expediently has a very high one Reduction ratio so that the drive rotor can be operated at high speed. Through this reduction ratio and through the sealed bearing of the drive rotor the transmission can be essentially self-locking be when it is from the side of its output gear is driven here.

To damage in the event of such Avoiding force application is according to a second Embodiment of the invention according to claim 7 in the drive connection between the drive rotor and the in drive engagement with the transmission Component, for example a carrier, stand or Like. The irrigation device, an overload clutch intended. Advantageously points the overload clutch coupling links on that under Compressed force interlocked in almost every relative position interlock, their interlocking however against the pressure force in case of overload can skip.

For storage of the drive device or Water motor, which is expedient with the one to be driven Part opposite the stand or the like pivots, a shaft is advantageously provided, the detachable but essentially rigid with the Housing of the water motor is connected and the pivotable or rotatable relative to the water motor Carrier part axially against the water motor in such a way ensures that the outer circumference of the Overload clutch can be surrounded. Is this Shaft designed as a hollow shaft, so it serves at the same time as the line connection between one hose connection provided on the support or the like. and the housing of the water motor. The overload clutch can also be used for other than provided the drive device described be.

Another embodiment of the invention, in particular a drive device of the described Type, also results from that entering the housing of the water motor Water flow depending on the flow rate or at least partly from the pressure can be routed around the drive rotor, that the corresponding partial flow the drive rotor not acted upon in the sense of the drive effect, although this partial flow through the rotor chamber passed through and for example only by directors of the application of the Drive rotor is held. The partial flow is expediently by at least one pressure relief valve between one to the side of the gearbox lying water-carrying chamber and the rotor chamber controlled, the valve closing part in Form a simple plate in the rotor chamber so resiliently printed against a passage opening may be that it reaches a predetermined Pressure lifts off and bypassing the passage the or the valve channels released. Appropriately are two valve closing parts by the tongue-like Ends of a flat material strip formed, just about halfway between these ends is attached to the associated transverse wall and thereby two protruding in opposite directions Spring arms and the ends of the valve closing parts forms. This results in a very simple and compact training, especially since the or the spring arms between the valve channels and the Rotor axis or between the transverse wall and the opposite end of the drive rotor arranged at a distance from the rotor axis can be smaller than half the outer diameter of the drive rotor.

Fig. 1

eine mit einer erfindungsgemäßen Antriebsvorrichtung versehene Beregnungsvorrichtung in teilweise geschnittener Ansicht,

Fig. 2

die Antriebsvorrichtung gemäß Fig. 1 in vergrößerter Darstellung und im wesentlichen im Axialschnitt, jedoch um 90° verdreht,

Fig. 3

den Wassermotor gemäß Fig. 2 in vergrößerter Darstellung und

Fig. 4

den Wassermotor gemäß Fig. 3 in Ansicht von links und teilweise geschnittener bzw. aufgeschnittener Darstellung.

These and further features of preferred developments of the invention are evident from the claims and also from the description and the drawings, the individual features being implemented individually or in groups in the form of subcombinations in one embodiment of the invention and in other areas, and can represent advantageous and protectable versions. An embodiment of the invention is shown in the drawings and is explained in more detail below. The drawings show:

Fig. 1

a sprinkler device provided with a drive device according to the invention in a partially sectioned view,

Fig. 2

1 in an enlarged view and essentially in axial section, but rotated by 90 °,

Fig. 3

2 in an enlarged view and

Fig. 4

3 in a view from the left and partially cut or cut view.

As shown in FIG. 1 in particular, it is an inventive one Drive device 1, for example for swiveling operation of a sprinkler 2 provided with a stand 3, a Ground anchors or the like can be set up. The stand 3 has in the illustrated embodiment two V-shaped diverging downwards, in the longitudinal direction of the sprinkler extending, approximately U-shaped stand 4 on, with their ends laterally in two end carriers 5, 6 are inserted and with these the console or the stationary or immovable component of the Form irrigation device 2, on and between which a nozzle housing 7 than that of the drive device 1 driven movable component is stored. The nozzle housing 7 has on it Top side at least one longitudinal row of different aligned spray nozzles 8 on which is practically a kind of water curtain on one level emerges from the swivel movement - seen in the longitudinal direction - to the left and / or is inclined to the right and thereby a base area of adjustable size, for example a lawn or a bed, sprinkled.

The almost cylindrical housing, which in the Area of the drive device 1 expanded downwards is pointing to the drive device 1 turned, front end one into one Bearing opening of the associated carrier 6 engaging Bearing pin 9 on. The other end of the the nozzle housing 7 forming the nozzle carrier with a hollow shaft protruding over this end 10 stored in the associated carrier 5. The nozzle housing 7 suitably consists of two side Half shells made of plastic, with tongue and groove interlock and by ultrasonic welding or the like. substantially liquid-tight with each other are connected.

The drive device 1 has a drive motor a fluid powered motor in the form of a Water motor 11 on the housing 12th forms a self-contained unit, which in essentially completely within the nozzle housing 7 lies and only with a short rear End section for connecting the gearbox to the carrier 5 from the rear end of the nozzle box 7 protrudes. The lying housing axis 13 of the water motor 11 coincides with the axis of rotation or swivel of the nozzle housing 7 together, the Hollow shaft 10 firmly in the rear end of the housing 11 used and rotatable in the plastic existing carrier 5 is stored. Right away behind and is coaxial with the hollow shaft 10 into the associated end face of the carrier 5 Connection for a water pipe in the form of a Hose connection, preferably a plug-in coupling member a quick coupling. About the hose connector 14 is through the hollow shaft 10 the inside of the housing 12 or the water motor 11 is supplied with pressurized water, the then completely by one at the front end the housing 11 provided water outlet connection 15 emerges again. On the in the housing axis 13 lying, nozzle-shaped water outlet connection 15 is an angular elbow 16 sealed with one end attached, the other end from below into one nozzle line lying within the nozzle housing 7 17 is inserted. This nozzle line 17th extends in the longitudinal direction of the nozzle housing 7 continuously over all spray nozzles 8, such that these with the inner ends of their nozzle holes together directly to the nozzle line 17 are connected, the cross sections of which are essential or several times smaller than that of the nozzle housing 7 are. The housing 12 of the water motor 11 is centered immediately behind the nozzle line 17 in a receptacle 18 of the nozzle housing 7 is used and for example through in the rear end wall of the nozzle housing 7 engaging cams secured against twisting. The recording 18 can through several ribs distributed over the circumference or the like. Formed on the outer circumference of the Housing 12 abut.

In the rear end of the housing 12 as Gear motor trained water motor 11 is a multi-stage, namely five to ten stages, preferably eight-stage reduction gear 19 provided, of which a first gear stage through the input side drive connection of the Gearbox and another gear stage through the be formed on the output side drive connection can. The gear 19 is in one of the water channels between the hollow shaft 10 and the water outlet connection 15 sealed separate gear chamber 20 of the housing 12 provided the length of this gear chamber 20 µm about half smaller than the outside diameter of the housing 12 can be in its area.

For alternating switching of the swivel direction of the nozzle housing 7 is a switching device 21 provided by a Swiveling movement between two control positions actuated switch valve 22. This switch valve 22 is in a switching chamber 23 arranged, which are in the same longitudinal section of the Housing 12 as the gear chamber 20 is located however, the water flow between the hollow shaft 10 and the water outlet connection 15 or directly to the associated end of the hollow shaft 10 is connected.

The water flowing through the water supply drives a drive rotor 24 of the hydraulic motor at, this drive rotor 24 a at least turbine wheel exposed to a jet 25 in a rotor chamber 26. This rotor chamber 26 is axial within the housing 12 immediately following the gear chamber 20 and the switching chamber 23 are provided. The housing However, 12 points in the area of the rotor chamber 26 opposite the area of the gear chamber 20 and the switching chamber 23 a smaller one Inner and / or outer diameter. The Rotor chamber 26 is immediately from the switching chamber 23 with the flowing water supplied, which then from the rotor chamber 26 immediately exits through the water outlet connection 15.

The housing 12 consists essentially of two housing parts placed in the axial direction 27, 28 and an end cap 29 through Centered against each other and waterproof by ultrasonic welding or the like connected with others. The rear housing part 27 forms the rear end of the nozzle housing 7 penetrating end or forehead collar as well the gear chamber 20 and the switching chamber 23 over most of their axial extent. The front housing part 28 is with his rear, stepped in the outer diameter Centered in the front, inside diameter complementary expanded end of the housing part 27 used and forms a short distance in front of the rear housing part 27 an approximately rectangular to the housing axis 13, in one piece with him formed transverse wall 30 which the rotor chamber 26 opposite the gear chamber 20 tight and opposite the switching chamber 23 spatially separated. In the rear area forms the rear housing part 27 formed in one piece with it End wall 31, through which the said Forehead collar protrudes backwards and the front one End of the hollow shaft 10 carries.

The rear housing part 27 also forms a partition formed in one piece with it 32, both on the end wall 31 and on the Inner circumference of the housing shell of this housing part 27 on opposite sides connects and after attaching the front Housing part 28 also close to the associated Side of the transverse wall 30 connects. This, for example approximately flat and to an axial plane the parallel partition 32 of the housing is opposite this axial plane about its thickness transversely offset to gear 19 so that the gear chamber 20 a smaller volume than the switching chamber 23 has. Protrudes from the end wall 31 the housing is in one piece with the end wall 31 trained, sleeve-shaped water inlet connection 33 over part of the height of the partition 32, this water inlet connection 33 the intermediate wall 32 formed in one piece with it partially penetrated, but in the area of its inner Front end in the form of a circular section only to the switching chamber 23 open and to the gear chamber 20 closed is. The water inlet connection 33 has an internal thread into which the hollow shaft 10 with one provided at its front end External thread is screwed in so that the end face opposite the closed part the inner end of the water inlet connection 33 is braced.

The turbine wheel 25 of the drive rotor 24 has a rotor shaft 34 inserted into a hub of only about 2 to 3 mm in diameter, whose via the rear end of the turbine wheel 25 protruding end penetrates a bearing sleeve 35 and in the bearing opening of this bearing sleeve 35 an annular seal 36 is sealed. The, with the drive rotor 34 and a rotor pinion 37 forming a self-contained structural unit Bearing sleeve 35, the outer diameter slightly is larger than that of the rotor pinion 37 from the side of the rotor chamber 26 into one Sealed opening in the transverse wall 30 inserted so that the rotor pinion 37 with part of its Extends into the gear chamber 20 and there the drive connection of the drive rotor 24 with the transmission 19 manufactures. The further away from Turbine wheel 25 on the side facing away from it Side of the bearing sleeve 35 and the rotor pinion 37 lying end of the rotor shaft 34 can be in one the gear chamber 20 protruding bearing eye the transverse wall 30 may be stored in a corresponding Section of the intermediate wall 32 sealed intervenes and thereby precisely aligned and is additionally supported.

Roughly symmetrical on either side of one approximately rectangular to the intermediate wall 32 lying axial plane of the drive conductor 24 or the housing 12 the gear 19 each have a cylindrical pin shape Transmission axis 39 or 40, with each transmission axis with its front end in the housing part 28 or in a blind hole in the transverse wall 30 and with its rear end in a blind hole of the housing part 27 is held. On each gear axis 39, 40 is a plurality of same, stepped gears 41, 42, 43 axially arranged next to each other, each the smaller gear stage of the one Gear axis the larger in diameter Drive gear stage of the other gear axis. The larger gear stage in diameter first gear 41 of the gear axis 39 directly driven by the rotor pinion 37, while a gear stage smaller in diameter of the last gear 43 of the same gear axis 39 an output pinion 44 of the transmission 19 forms that in diameter compared to the rest, smaller gear stages is larger and through a window 47 over the inner circumference of an inner one Forehead collar 46 protrudes, which is concentric within into the rear end wall of the nozzle housing 7 engaging front collar 45 lies.

The two are in the area of the output pinion 44 Forehead cuffs 45, 46 over one piece with them trained, almost shell-shaped pinion housing connected to each other, which is the output pinion 44 over most of it Extent, namely up to the window 47 protruding area and also at the rear Front and covers one in a bearing opening of the output pinion 44 forms a projecting bearing projection, the rear end of the gear axis in its blind hole 39 is supported. The rear end of the gear axis 40 also extends over part of the Axial extent of the front collar 46, the associated Area for the inclusion of this rear End reinforced with an appropriate bearing eye is.

The outer circumference of the same in diameter large, larger gear stages of the gear wheels 41, 42, 43 extend close to the associated side the partition 32 and close to the inner circumference of the casing of the housing 12 or the gear chamber 20, this coat in the range the transmission chamber 20, as in particular FIG. 3 can be seen on the inner circumference for the recording the gears with a recess is that it is thinner in this area than in the other areas.

To apply the turbine wheel 35 with a drive water jet are two approximately tangential in opposite directions the circumference of the turbine wheel 25 directed drive nozzles 48, 49 provided, one of which the direction of rotation in one and the other the Direction of rotation in the opposite direction certainly. The nozzle openings 48, 49 are over nozzle channels lying approximately axially parallel to the housing 12 50, 51 line-connected to the switching chamber 23, the nozzle channels 50, 51 from the bulkhead 30 both substantially free protrude into the switching chamber 23 as well the transverse wall 30 approximately to the front Project end cap 29 into rotor chamber 26.

The above in the switching chamber 23 Parts of the nozzle channels 50, 51 are by two symmetrical on both sides of the axial plane 38 duct cross-section elongated in cross-section 52 formed, about the axial plane 38 parallel center planes are parallel to each other. In the rotor chamber 26 protruding parts of the Nozzle channels 50, 51 are separated by, respectively with one of the duct connection 52 via a passage opening 30 connected in the transverse wall Channel sections 53 formed on the im Diameter reduced casing of the front Housing part 28 with their turbine wheel Connect 25 opposite sides and towards to the turbine wheel 25 in cross section thereby narrower be that their are adjacent to each other Walls towards the turbine wheel 25 in Cross section diverge while their from each other facing walls essentially parallel to each other in the levels of the associated walls the duct connection 52 lie. That of the rotor shaft 34 facing sides of the channel sections 53 are up to the rear face of the turbine wheel 25 closed and then to Formation of the nozzle openings of the drive nozzles 48, 49 open. The front, facing away from the transverse wall 30 Ends of the channel sections 53 are in front Assembly of the end cap 29 open and are at Put the end cap 29 with end closures 54 closed on the inside of the front wall protrude the end cap 29 in one piece, so that a very simple manufacture of the Housing in plastic is possible.

The switching device 21 or the switching valve 22 has a for carrying out a Control movement mounted switching member 55, the one at right angles to the housing axis, preferably axis lying in the axial plane 38 proportionate between two end positions small angle pivotable and in Fig. 4 in its middle position is shown. For swiveling Storage, the switching member 55 approximately T-shaped rocker 56, the T-head bridge lies within the switching chamber 23 and their T-foot the end wall 31 movable, however sealed with an annular seal 58 so penetrating switching pin 57 forms that the free End of the switching pin 57 to the rear over the Forehead cuffs 45, 46 protrudes. The switching pin 57 is located between these foreheads 45, 46. On both sides of the switching pin 57 has the rocker 56 on the associated side of the T-head piece one each bearing edge protruding against the end wall 31 59 with which they work in the area of the inner End face of the end wall 31 on both sides of the seal 58 is supported so that the pivot axis in the plane of this inside and perpendicular to T-headpiece is in the middle of its length.

The rocker 56 is essentially for actuating one parallel to it, plate or provided strip-like valve body 61, the formed by a leg of an angle profile and between the T-head piece of the rocker 56 and the free ends of the nozzle channels 50, 51 or the duct connection 52 is located. The valve body 61 is essentially only due to support with the rocker 56, with an intermediate layer connected to a strip-shaped leaf spring 60, which only at the cam-shaped ends of the corresponding to the leaf spring 60 concavely curved T-head piece rests and thereby a structural unit forms with the valve body 61 that they in the Center of its length from a spigot of this valve body 61 is penetrated closely and axially secured. The other leg of the valve body 61, the opposite the adjacent longitudinal edge of the valve body is slightly offset to the inside on the side of the Securing the T-head piece of the rocker 56.

The valve body 61 or that of the rocker 56 turned away, slightly raised end surface areas are the valve seats 62, the opposite End faces of the duct connection 52 assigned to which the valve body 61 in one Axial range of the housing 12 is opposite that approximately with the inner end face of the water inlet connection 33 coincides. In every Swing end position of the rocker 56 is one of the two valve seats 62 closed and the other opened, the valve body 61 from the central position 4 initially via the central Connection taken with the leaf spring 60 and then over one of these facing cams by the associated cam of the rocker 56 against the valve seat 62 can be pressed. Against linear movements towards the valve seats 62 is the valve body 61 by a between the counter seats lying on the valve seats 62 63 secured by a similar to the duct connection 52 protruding freely from the transverse wall 30 Web is formed and a middle projection of the valve body 61 is opposite. Against The valve body 61 is longitudinal displacements by at least one fuse 64 opposite secured the housing 12, which is conveniently by an axial web on the inside of the housing shell and / or on the outer circumference of the water inlet connection 33 forming connecting piece is formed and in a corresponding groove in the middle of the associated longitudinal edge of the valve body 61 with sufficient cross play. The fuse 64 bridges also engage in corresponding ones Grooves of the T-head part of the rocker 56 with an even bigger cross game. Is it made of rubber Material existing valve body 61 once pivoted into a working position, see above he is in this position by the water pressure held until it is back on the rocker 56 in the another valve position is transferred.

On the hollow shaft 10 is within the Front collar 46 lying, by an outer peripheral toothing formed tread 65 rotatable stored, the smaller in diameter Output pinion 44 combs and opposite this is axially displaceable. The running ring 65 is opposite the carrier 5 to a predetermined one Torque locked or positively secured, whereby the drive connection between the water motor 11 or the nozzle housing 7 and the stand 3 is made.

The switching device 21 points to the setting the swivel angle and the swivel range two immediately to the rear end of the Housing 12 adjoining, ring-like and around Housing axis 13 rotatable adjustment parts 66, 67 on, one of which is the rear end of the case 12 or surrounds the forehead collar 45 with a collar, while the other, the same trained adjustment part 66 with his collar in the opposite Protrudes towards the rear. The adjustment parts 66, 67 are directly adjacent to two subsequent hubs 68, 69 on a freely in the direction to the water motor 11 projecting bearing sleeve 70 of the carrier 5, which the hollow shaft 10th surrounds at a distance and in the area of the hubs 68, 69 a relatively easy to overcome locking corrugation for the engagement of corrugated segments of the hubs 68, 69 has, so that the adjusting parts 66, 67 with only one predetermined stiffness are to be rotated and hold it securely in the set position.

Each setting part 66, 67 has one over the Outer periphery of his collar protruding tab-like Handle attachment 71, 72 on, so at the end an outer collar segment of the associated Adjustment part 66, 67 is that these collar segments as well as the handle lugs 71, 72 when they are adjacent Adjustment parts 66, 67 in a common Level are provided and the collar segment one of the handle parts each the collar of the other grip part overlaps on the outer circumference.

In the contiguous, the collar and the hubs 68, 69 connecting, ring-shaped Areas of the adjustment parts 66, 67 are segment-shaped Slots 73, 74 for the entry or Passage through the switching pin 57 is provided End driving stops for the switching pin 57 form, the driving stops by mutual Twist the adjustment parts 66, 67 in their mutual distance and by common Rotating the adjusting parts 66, 67 in their position changed compared to an axial or reference plane can be.

So the last-mentioned one-way possibility limited to a predetermined setting range is adjacent to the outside of the bearing sleeve 70 and in the same direction as this above Stop 75 of the carrier 5 is provided, the in corresponding, the slots 73, 74 approximately diametrically opposite slots of the washer-shaped Areas of the adjusting parts 66, 67 engages. So that the rocker 56 or the switching pin 57 after reaching its respective end position can be overloaded, a protective mandrel 76 after freely provided on the rear of the housing 12, that in the ring-shaped areas of the Adjustment parts 66, 67 assigned stop surfaces are compared to the driving areas of the Slots 73, 74 correspondingly in the circumferential direction are offset and by stepped end faces of this Slits 73, 74 can be formed. Of the Protective mandrel 76 is located on that of the housing axis 13 opposite side of the switching pin 57 and stands between the forehead cuffs 45, 46 of the End wall 31 freely to the rear about as far as that Shifter pin 57 before, so that it before installing the Water motor 11 in the carrier 5 also one Protective shield for the switching pin 57 forms.

The switching device can work can also be found in DE-PS 19 12 315, to those for further details and effects Reference is made.

The output shaft formed by the output pinion 44 of the water motor 11 is with the stand 3 with the interposition of one within the Carrier 5 lying overload clutch 77 drive-connected, between the tread 55 and the bearing sleeve 70 acts. For this purpose the Runner 65 at the end of a cup-shaped intermediate sleeve 78 provided with a predetermined Radial play within the bearing sleeve 70 as well as on the hollow shaft 10, that its rear end forming the bottom of the bowl performed directly on the circumference of the hollow shaft 10 is, while its front, the tread 65 End with one in it inserted guide sleeve 83 on the hollow shaft 10 is stored. The rear end of the intermediate sleeve 78 forms a coupling member 79 of the overload clutch 77 while the other coupling link 80 through an inner, between the sleeve ends lying, enforce by the hollow shaft 10 Ring collar of the bearing sleeve 70 is formed, the end facing away from the running ring 65 for the Support an end or shaft collar 84 of the Hollow shaft 10 with the interposition of at least one Seal 85 or an axial sliding ring is used.

The rear face of the coupling link 79 and the front end face of the coupling member 80 points across the circumference, complementary front teeth 81, whose Teeth on both sides so inclined side flanks have them to their head areas become narrower. Between the coupling link 79 and the guide sleeve 83 is within the Intermediate sleeve 78 and around the hollow shaft 10 a pre-tensioned as a helical compression spring Coupling spring 82 provided which the coupling member 79 of the on the guide sleeve 83 axially displaceably arranged intermediate sleeve 78 presses into engagement with the coupling member 80. The housing 12 and the carrier 5 through excessive torque loaded against each other, so the teeth of the coupling links skip 79, 80 one another, the coupling member 79 against the force of the clutch spring 82 under the flank pressure of the teeth axially shifted and achieved by a correspondingly fine tooth pitch is that the coupling member 79 in almost every Rotational position again in its rotational engagement returns with the coupling member 80.

Between the switching chamber 23 and the rotor chamber 26 is one of the nozzle channels 50, 51 immediate bypass water supply 86 is provided, through which to drive the water motor 11 serving amount of water essentially regardless of that through the water inlet connection 33 amount of water supplied to an approx constant measure is limited to an approximate to get constant engine speed. The each Excess water flows through openings 87 in the transverse wall 30 outside the outer circumference of the turbine wheel 25 directly in the rotor chamber or against the casing, the side faces of the Channel sections 53 and a platform-like elevation the transverse wall 30 directed into the rotor chamber 26, from where they are used to drive the Turbine wheel 25 through one of the drive nozzles 48, 49 leaking water through the water outlet connection 15 to the spray nozzles 8 of the Nozzle housing 7 is performed.

The passage openings 87 are parallel to Axial plane 38 as seen in FIG. 4, on both sides laterally outside the channel sections 53 and, perpendicular to it or perpendicular to the axial plane 38 seen in FIG. 3, between the channel sections 53 and the rotor shaft 34 or the latter bearing and the associated ends of the transmission axes 39, 40 supporting platform-like elevation close to the inner circumference of the rotor chamber 26. Each passage opening 87 has one Pressure relief valve 88, the movable, by a valve spring tongue 89 formed, flap-like The valve part is independent of the other valve part works, but formed in one piece with this is. The one located within the rotor chamber 26 Valve seat 90 of each pressure relief valve 88 is through a flat rising to the casing, the associated passage opening 87 surrounding Increase in the transverse wall 30 formed on the the respective valve spring tongue 89 flat under one predetermined spring tension is present. For generation this spring tension are the two valve spring tongues 89 through the widened ends of a flat spring strip 91 made of suitable metal formed in the area of a medium broadening between the valve spring tongues 89 by one Bolt 92, for example a self-tapping one Screw penetrates and with this in the Axial plane 38 for fastening against the transverse wall 30 is excited. When a predetermined one is reached Pressure drop between the switch chamber 23 and the rotor chamber 26 lift the Valve spring tongues 89 from the valve seats 90, so that the bypass water guide 86 is pressure-dependent is open.

On the inside of the front wall of the end cap 29, in addition to the end closures 54, are also curved, plate-shaped guide members 93 in one piece provided that the turbine wheel 25 via a Part of the outer circumference adjoining each other opposite sides of the drive nozzles 48, 49 or the channel sections 53, wherein the passage openings 87 essentially outside the outer circumference of these guide members 93. With its from the associated drive nozzle 48 or 49 opposite end closes each guide member 93 practically on the inner circumference of the jacket of the rotor chamber 26 due to the eccentric bearing of the turbine wheel 25 almost so that this inner circumference is a continuation of the guide member and forms a very high one Efficiency results because of the respective Drive nozzle 48 or 49 escaping water Turbine wheel 85 essentially only in the direction to leave the water outlet port 15.

On the inside of the front wall of the end cap 29 are also one-piece protruding alignment approaches 94 provided which the channel sections 53 overlap on the sides facing away from one another, so that the end cap 29 only in the correct one Mounting position placed on the housing part 28 can be. Finally, on the inside the end wall of the end cap 29 is a protruding piece, axial bearing journal located in the rotor axis 95 provided, the tapered end of the End face of a hub of the turbine wheel 25 with is a short distance away and thereby Axial play of the drive rotor 24 limited. Essentially all components of the drive device described can be made of plastic or plastic-like Materials exist, whereby only the leaf spring 60, the clutch spring 82, the Spring strips 91 and the bolt 92 and the Rotor shaft 34 and the transmission axes 39, 40 Metal can exist.

1 shows, the water motor 11 is in the nozzle housing 7 installed that the transmission 19 or the gear chamber 20 above the Water supply or the switching chamber 23 is located, which is provided below. That’s it Water entering the gear chamber prevented even better, taking care of any intrusion Leakage water a suitable exhaust opening or the like. Can be provided.

Claims (12)

1. Drive mechanism (1) for a sprinkler (2) or the like with a hydraulic motor (11) defining a motor axis (13), which is provided in a casing (12) with at least one drive rotor (24) exposed to a water distribution system, as well as a gear and a control device (21) for different drive states of the drive mechanism (1), the gear (19) and the control device (21) being located in substantially adjacent chambers at right angles to the motor axis (13), namely a gear chamber (20) and a control chamber (23), characterized in that the gear chamber (20) is positioned substantially separately from the water distribution system.
2. Drive mechanism according to claim 1, characterized in that the gear chamber (20) is separated by a partition (30) at right angles to the rotor and/or at least one gear axis (39, 40) from a rotor chamber (26) for the drive rotor (24) and in particular the drive rotor (24) for drive connection with the gear (19) traverses said partition (30) with a rotor shaft (34) in a substantially sealed manner and that preferably the reduction gear (19) has two parallel, juxtaposed gear axes (39, 40) with alternately meshing, stepped gear wheels (41, 42, 43) and in particular the gear axes (39, 40) are located substantially symmetrically on either side of an axial plane (38) of a casing jacket in which is located the rotor shaft and which optionally forms a median plane of a control valve (22) or the control chamber (23).
3. Drive mechanism according to claim 1 or 2, characterized in that the control device for the driving rotation of the hydraulic motor (11) in both rotation directions has a reversing device (21) and/or a control valve (22) located in the water distribution system substantially adjacent to the gear (19) in the control chamber (23), which is sealed with respect to the gear chamber (20), the control device (21) being at right angles to the motor or rotor axis and/or to at least one gear axis (39, 40) adjacent to the gear (19) and in particular the control chamber (23) is separated from the gear chamber by a partition wall (32) roughly parallel to at least one of the axes.
4. Drive mechanism according to any one of the preceding claims, characterized in that a rotor chamber (26) receiving a turbine wheel (25), the gear chamber (20) and optionally the control chamber (23) are surrounded by a common casing jacket and in particular the rotor axis is displaced with respect to an approximately parallel casing axis (13) laterally from gear (19) and that preferably the control chamber (23) and the gear chamber (20) extend over substantially the same length portion of the casing (12) and in particular the partition wall (32) is eccentric to the casing jacket and to a frontal water inlet connection (33) for the casing (12) or the control chamber (23).
5. Drive mechanism according to any one of the preceding claims, characterized in that the casing (12) essentially comprises two casing parts (27, 28), which are engaged in the longitudinal direction, whereof preferably a rear casing part (27) essentially forms the gear chamber (20), optionally with the partition wall (32), and a front casing part (28) essentially forms a rotor chamber (26), a partition (30), front mounting supports for the gear shafts (39, 40), and connecting pieces (52) of nozzle ducts (51, 50) for the drive rotor (24) projecting into the control chamber (23) associated with a control valve (22).
6. Drive mechanism according to any one of the preceding claims, characterized in that a front casing part (28) is closed at its front end by an end cap (29) having a water exit connection (15) and water guide members (93) for the drive rotor (24) and the rear casing part (27) is closed by an end wall (31) constructed integrally therewith and traversed by a driven pinion (44) of the gear (19) and in which is provided the water inlet connection (33).
7. Drive mechanism for a sprinkler or the like with a hydraulic motor (11) defining a motor axis (13) and which is provided in a casing (12) with at least one drive rotor (24) exposed to a water distribution system and in particular a gear (19) and is incorporated into a drive connection, in particular according to any one of the preceding claims, characterized in that in the drive connection is provided a self-engaging safety clutch (77).
8. Drive mechanism according to any one of the preceding claims, characterized in that the hydraulic motor (11) is mounted in rotary manner on a support (5) constructed for connection to a post (3) or the like of the sprinkler (2), as well as being drive-connected via the gear (19) to said support (5), preferably accompanied by the interposing of a non-positive, self-engaging safety clutch (77).
9. Drive mechanism according to any one of the preceding claims, characterized in that the casing (12) of the hydraulic motor (11) is mounted with a hollow shaft (10) arranged in non-rotary manner thereon and in particular screwed into the water inlet connection (33) and that preferably opposite the hollow shaft (10) is rotatably mounted a blade rim (65) for the driven pinion (44) of the gear (19) and the blade rim (65) is drive-connected to the support (5) via a safety clutch (77).
10. Drive mechanism according to any one of the claims 7 to 9, characterized in that the safety clutch (77) has frontally toothed coupling members (79, 80) meshing with one another under spring tension and whereof preferably one is formed by an intermediate sleeve (78) mounting the hollow shaft (10) with respect to the support (5) and forming the blade rim (65) by the end remote from the gear (19) and which is displaceably arranged with respect to the hollow shaft (10) by a coupling spring (82) located around said shaft therein.
11. Drive mechanism according to any one of the preceding claims, characterized in that for diverting an excess partial flow of the water distribution system is provided a bypass water distribution system (86) substantially passing round the drive rotor (24) with respect to the hydraulic drive and is associated with the control chamber (23).
12. Drive mechanism according to claim 11, characterized in that the bypass water distribution system (86) is provided between a water inlet connection (33) and a water outlet connection (15) of the casing (12) and in particular in a partition (30) has at least one passage opening (87) from a reversing chamber (23) to a rotor chamber (26) which is separate from the nozzle ducts (50, 51), that preferably the bypass water distribution system (86) is controlled in pressure-dependent manner or with at least one overpressure valve (88), which in particular has a valve spring tongue (89) covering the passage opening (87) in the rotor chamber (26) and that in particular both ends of a spring strip (91) located between the nozzle ducts (50, 51) and the rotor axis in each case forms a valve spring tongue (89), whereof each covers a passage opening (87) located outside an adjacent nozzle duct (50 or 51) or outside the circumference of the turbine wheel (25).

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