WO1999042388A1 - Aiguillage pour dispositif convoyeur, notamment convoyeur suspendu - Google Patents

Aiguillage pour dispositif convoyeur, notamment convoyeur suspendu Download PDF

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Publication number
WO1999042388A1
WO1999042388A1 PCT/EP1999/001059 EP9901059W WO9942388A1 WO 1999042388 A1 WO1999042388 A1 WO 1999042388A1 EP 9901059 W EP9901059 W EP 9901059W WO 9942388 A1 WO9942388 A1 WO 9942388A1
Authority
WO
WIPO (PCT)
Prior art keywords
track section
switch
switch tongue
section
conveyed goods
Prior art date
Application number
PCT/EP1999/001059
Other languages
German (de)
English (en)
Inventor
Wilhelm Lutsch
Original Assignee
Wf Logistik 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 Wf Logistik Gmbh filed Critical Wf Logistik Gmbh
Publication of WO1999042388A1 publication Critical patent/WO1999042388A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B25/00—Tracks for special kinds of railways
    • E01B25/22—Tracks for railways with the vehicle suspended from rigid supporting rails
    • E01B25/26—Switches; Crossings

Definitions

  • the invention relates to a switch for a conveyor device, in particular a hanging conveyor device, in which conveyed goods carriers provided with rollers are movably guided on running rails, the switch having a first switch tongue switchable between a first position and a second position, which in the first position has a connection end of a first connects a stationary track section to a connection end of a second stationary track section to guide conveyed goods carriers from the first track section to the second track section, and which is separated from the first track section in the second position.
  • Overhead conveyors are used, for example, in the clothing industry, in large laundries or in dispatch warehouses to transport items of clothing to certain processing or treatment stations.
  • the rails are attached to the underside of a supporting structure to be fastened to the ceiling by means of retaining webs.
  • the running tracks have a roof profile or a square profile with an upper edge, from which two running surfaces for the rollers of the conveyed goods protrude at an angle to each other.
  • the conveyed goods carriers are so-called trolleys with V-shaped carriages, which are supported with respective pairs of rollers hanging from the rails.
  • the trolleys have holders on their underside for hanging in hangers with items of clothing attached to them.
  • the known switch has three stationary running track sections hanging on a supporting frame, which are to be connected to correspondingly assigned running tracks of the overhead conveyor device in order to connect three conveyor lines to the turnout.
  • the switch also has two movable running rails which form the switch tongues or switch legs and which are coupled to one another for joint actuation via a coupling mechanism.
  • One of the switch tongues serves, if necessary, to connect a first stationary running track section to a second stationary running track section, wherein it is articulated at one end to the second running track section and can be pivoted between a position of the connection to the first running track section and a position of the decoupling from the first running track section .
  • the other switch tongue is used to connect the first stationary track section to the third stationary track section and is articulated at one end to the third track section, being pivotable between a position of the coupling to the first track section and the decoupling from the first track section.
  • the coupling mechanism ensures that one of the switch tongues comes into the position of the coupling to the first track section when the other switch tongue is moved into the position of the decoupling from the first track section. With such switches, it can happen, for example, due to carelessness when switching the switch tongues that the switch tongues - 3 - position, so that none of the switch tongues comes into contact with the first track section correctly.
  • the switch tongue-side connection end of the first track section is then open or is then exposed.
  • the switch is conveyed via the first track section, they come free from the rail guide at the open connection end and can fall off the switch or put the conveyor out of operation.
  • a corresponding situation can arise if, at the time of switching of the switch, a conveyed goods carrier immediately approaches the switch-tongue-side connection end of the first track section and reaches the connection end before one of the switch tongues has assumed the position of the connection to the first track section.
  • the invention has for its object to provide a switch of the type mentioned, in which with simple means a safeguard against falling of the conveyed goods is realized with an open connection end of the first track section.
  • a locking device for blocking conveyed goods carriers is provided with an open connection end of the first track section, which has a locking element arranged on a support element in the vicinity of the connection end of the first track section and movable between a blocking position and a release position which is in the blocking position when the connecting end of the first running rail section is open, in order to prevent conveyed goods carriers from moving in the direction towards the connecting end of the first running rail section, and which engages with a part of the first switch tongue and is forcibly pushed into the release position by the first switch tongue , when the first switch tongue moves into its first position, namely the position of the connection to the first track section - 4 -, the locking element located in the release position lets the conveyed goods pass through unhindered.
  • the automatically effective locking device ensures that the locking element automatically assumes the blocking position and protrudes blocking the path of the conveyed goods carrier on the first track section when it is released from the release position by the first switch tongue. This happens as soon as the first switch tongue is moved out of its first position, namely the position of the connection to the first track section. In this way it is ensured with a high degree of certainty that conveyed goods carriers that are fed along the first running track section are stopped before reaching the connecting tongue end of the first running track section - and are thus prevented from falling out of the running track guide as long as the connecting end of the first running track section is open , ie is not connected to a switch tongue.
  • the blocking element in the blocking position is engaged by a driver on the switch tongue and moved into the release order when the switch tongue moves into its first position. The conveyed goods carriers can then freely pass through the connecting end of the first track section connected to the switch tongue.
  • the locking device can be implemented with a few, simply constructed parts without major assembly work and can be retrofitted, in particular in conventional turnouts, with little effort.
  • the locking element is a pivotably mounted rocker arm which, under the action of gravity, automatically moves from the release position into the blocking position. - 5 - position tilts when it comes free from a switch tongue moved out of its first position.
  • the rocker arm can, for example, be pivotably mounted on a stationary retaining web above the first running rail section near the connection end about a tilting axis running transversely to the first running rail section and can have two lever arms, one of which protrudes into the path of the conveyed goods carrier in the blocking position and is lifted in the release position from the first track section and of which the other is designed as an engagement element for the driver element of the switch tongue in question.
  • the first switch tongue is articulated and thus pivotably fastened between the first position and the second position on the connection end of the second track section.
  • the switch have a switch switch which can be switched between a first and a second position and which in the first position connects the connecting end of the first running track section to the connecting end of a third running track section in order to convey conveyed goods from the first running track section to the third running track section to conduct, and which in the second position is separated from the first track section, wherein the first switch tongue and the second switch tongue are coupled together for actuation, in order to alternate the first
  • the second switch tongue is pivotally attached between the first and the second position at the connection end of the third track section and wherein the locking element engages with a part of the second switch tongue and from the second switch tongue is forcibly moved into the release position when the second - 6 -
  • Turnout tongue is moved to its first position.
  • the first track section is always released for the transport of conveyed goods carriers, as long as one of the two switch tongues is correctly connected to the first track section.
  • the locking device ensures that conveyed goods carriers that are fed along the first track section are stopped before they can reach the open connection end of the first track section.
  • a first locking element is arranged on the first switch tongue in the vicinity of its connection end to be connected to the connection end of the first track section that it protrudes into the path of the conveyed goods carrier on the first track section in order to prevent conveyed goods carriers with the open connecting end of the first running track section from moving towards the connecting end of the first running track section when the first switch tongue leaves its first position, the blocking element, however, conveying goods carrier can pass freely to the connection end of the first track section when the first switch tongue is in its first position.
  • a locking element is also arranged on the second switch tongue in the vicinity of its connection end to be connected to the connection end of the first track section in such a way that it blocks the path of the conveyed goods carriers on the first Track section protrudes to prevent conveyed goods carriers from moving towards the connection end of the first track section when the connection end of the first track section is open - 7 - the second switch tongue leaves its first position, the second blocking element, however, allowing goods carriers to pass unimpeded to the connection end of the first track section when the second switch tongue is in its first position, and the blocking element of the switch tongue located in the second position of that first
  • Track section is so far away that it no longer protrudes in the path of the conveyed goods.
  • the movement sequences of the switch tongues during mutual switching and the arrangements of the locking elements are realized in such a way that when the switch tongues alternately switch between the respective first and second positions, the blocking element of the switch tongue transitioning to the second position still protrudes into the path of the conveyed goods carrier for so long , until the blocking element of the other switch tongue which is going to the first position has approached the first track section so far that it protrudes into the path of the conveyed goods carrier in a blocking manner.
  • the connecting end of the first track section is open, i. H. if both switch tongues are in an intermediate position, at least one of the blocking elements always protrudes into the path of the conveyed goods carrier in a blocking manner.
  • the locking elements can be rigidly attached to the switch tongue - and can be designed, for example, as an extension arm on the switch tongue underside.
  • the blocking element or elements are provided as movable cantilevers, so that the first blocking element is movably arranged on the first switch tongue, in such a way that when the first switch tongue is moved out of its first position, it is inevitable Movement relative to the first - 8th -
  • Turnout tongue in a position in which it protrudes into the path of the conveyed goods on the first track section.
  • the second locking element is movably arranged on the second switch tongue.
  • the blocking element in question moves away from the first track section with a delay in relation to the switch tongue assigned to it, when the switch tongue in question is moved out of its first position, and approaches the first switch track in advance when the switch tongue of is transferred from their second position to the first position.
  • the locking elements can for example be displaceably arranged on the relevant switch tongues blocking rods, as are described in the following description of the figures with reference to FIGS. 2a and 2b.
  • the locking elements could also be designed as articulated arms that can be folded in and out.
  • FIG. 1 a shows, as an exemplary embodiment of the invention, a switch for a suspended conveyor device of the type described in the introduction in a first switch position with the locking device in the release position, parts of the supporting structure being shown partially broken.
  • Fig. 1 b shows the switch according to Fig. 1 a in a second switch switching state with the locking device in the release position. - 9 -
  • FIGS. 1 a and 1 b shows the switch according to FIGS. 1 a and 1 b with the locking device in the blocking position and the open connecting end of the first track section.
  • Fig. 2b shows a partially broken side view of the first track section of the second embodiment with an open connection end.
  • FIG. 2c shows the situation according to FIG. 2b with a view of the open one
  • Fig. 3a shows in a partially broken and cut
  • FIG. 1 Perspective view of a detail of a third embodiment of the invention, in which locking elements are arranged on mutually switchable switch tongues.
  • FIG. 3b shows the switch tongue according to FIG. 2a with a view of the switch in FIG.
  • the switch according to FIGS. 1 a - 1 c has a supporting frame 3 to be fastened to a ceiling mount, with stationary running rail sections 7, 9 and 11 arranged thereon suspended via mounting webs 5, which are to be connected to relevant running rails of the overhead conveyor device by three conveying paths to connect to the switch.
  • the switch also has two movable tracks 13, 15, which represent the switch tongues or switch legs.
  • the first switch tongue 13 is used, if necessary, with the first stationary track section 7 - 10 - to connect the second stationary track section 9 for the passage of conveyed goods carriers 17.
  • the first switch tongue 13 is articulated at its end 19 to the second track section 9 and can be between the first position shown in FIG. 1 a, namely the position of the connection to the first track section 7, and the second position shown in FIG. 1 b , namely the position of the decoupling from the first running rail section 7.
  • the second switch tongue 15 serves to connect the first track section 7 to the third track section 11, the second switch tongue 15 being articulated at its end 21 to the third track section 11.
  • the second switch tongue 15 can be pivoted between the first position of the connection to the first running rail section 7 shown in FIG. 1 b and the second position of the decoupling from the first running rail section 7 shown in FIG. 1 a.
  • the switch tongues 13 and 15 are coupled to one another for joint actuation via a coupling device, which is indicated only incompletely at 23. Such coupling devices for switch tongues are known, so that a detailed description is unnecessary.
  • the coupling device and the means (not shown) for movably holding the switch tongues 13, 15 on the support frame 3 cause the first switch tongue 13 to be automatically guided into its second position according to FIG.
  • a switch actuation mechanism (not shown) for the switch tongues 13, 15 serves to alternately connect the switch tongues 13, 15 to the first running rail section 7, as is shown in FIGS. 1 a and 1 b. - 1 1 -
  • the running track sections 7, 9, 1 1, 13, 15 have a roof-shaped profile with running surfaces 27, 29 which protrude from the upper roof edge at an angle to one another downwards and to opposite sides.
  • the running surfaces 27, 29 serve to support pairs of rollers 31, 33 of the conveyed goods carriers 17 designed as trolley cars.
  • 1 a - 1 c a trolley carriage 17 is shown in a simplified representation.
  • the trolley 17 has two V-shaped drives 35, which are supported by the rollers 31, 33 hanging on a relevant rail and are connected at their lower ends by a support rod 39 for hangers 41 to be attached to them.
  • a clothes hanger 41 is shown.
  • a plurality of clothes hangers 41 with items of clothing located thereon can be provided on the support rod 39.
  • the locking device 43 has a two-sided lever 47 as a locking element, which is pivotably mounted on the support web 5 of the first running rail section 7 adjacent to the connection end 45 about a horizontal tilt axis.
  • the locking element 47 could be provided on a mounting part that is stationary with respect to the first running rail section 7 than the mounting web 5. The torque due to gravity is greater in the lever arm 49 facing away from the connecting end 45 than in the opposite lever arm 51, so that the lever 47 automatically tilts into the blocking position according to FIG.
  • the rocker arm locking element 47 on its lever arm 51 is supported by a driver element 55 on the top of the turnout tongue 13 or respectively connected to the first track section 7 15 engaged and pivoted into the release position according to FIG. 1 a or FIG. 1 b.
  • Each switch tongue 13, 15 has in the vicinity of its free connection end such a driving element 55, which in the example has a hook shape.
  • the driver element 55 of the first switch tongue 13 releases the rocker arm locking element 47 as soon as the switch tongue 13 moves out of its first position.
  • the rocker arm locking element 47 then tilts into the blocking position according to FIG. 1 c, in order finally to be engaged by the driver element 55 of the second switch tongue 15 on the lever arm 51 and to be pivoted into the release position according to FIG. 1 b when the second switch tongue 1 5 engages in its first position.
  • the locking device functions when the switch is switched from the state shown in FIG. 1 b to the state shown in FIG. 1 a. - 13 -
  • the switch tongues each have a vertical movement component upwards when pivoting from the first position and a corresponding vertical movement component downwards when pivoting into the first position, so that the respective driver element 55 causes the lever arm 51 of the rocker arm locking element 47 Approaching the rocker arm locking element 47 can engage from above.
  • the locking element can be biased towards the blocking position by spring force.
  • FIGS. 2a-2c a second exemplary embodiment of the invention is sketched in partial representations. Apart from the locking measures, the second exemplary embodiment corresponds to the first exemplary embodiment shown in FIGS. 1 a - 1 c. Elements in FIGS. 2a-2c that correspond in construction or in terms of their function to elements in FIGS. 1a-1c are each identified by the same reference numbers.
  • FIG. 2a shows the first track section 7, the switch tongue 13 in its first position and a locking element 47 held in its release position by the first switching tongue 13.
  • the locking element 47 is a two-sided rocker arm which is attached to one of the connecting ends 45 of the first track section 7 provided support element 6 for the switch tongue 13 or 15 in question is arranged to be pivotable about a substantially horizontal tilt axis 8.
  • Cross bar 10b below the first track section 7 protrudes into the path of the conveyed goods carrier. Thus, no conveyed goods carrier can reach the open connection end 45 of the first track section 7.
  • the switch tongue 13 (or the switch tongue 15 (not shown)) is moved into the first position according to FIG. 2a, the lower end of the switch tongue 13 (or 15) in question comes with the crossbar 10a on the shorter lever arm of the rocker arm 47 in engagement.
  • the switch tongue then presses the rocker arm 47 into the release position according to FIG. 2a.
  • the rocker arm 47 lies essentially horizontally below the track section 7 and the switch tongue 13 (or 15).
  • the rocker arm 47 has no blocking effect on the conveyed goods carrier of the type shown in FIGS. 1 a - 1 c, since the stirrup legs of the conveyed goods carrier 17 marked with 24 in FIG. 1 c form a sufficiently large space in the upper region near the rail, so that there can be no collision with the cross bars 10a and 10b of the rocker arm 47.
  • the exemplary embodiment according to FIGS. 2a-2c is particularly characterized in that the locking device 6, 8, 47 can be retrofitted in a simple manner and without any noteworthy conversion measures to existing and already installed switches of conventional type.
  • the concept according to the invention of realizing a locking device at a switch interface with a locking element on one of the rails to be connected to one another (in the example on the rail 7) and an actuating element or driver element for the locking element on the other rail (in the example on the switch tongue 13 or on the switch tongue 15) can also be realized with differently shaped locking elements and driver elements.
  • a locking element is arranged on a movable switch tongue, which interacts with an actuating element or driver element on a stationary rail in order to force the locking element into the release position when the switch tongue and the stationary rail element are connected directly to one another.
  • conveyed goods carriers are to be transferred from the movable switch tongue to the stationary rail section in the conveying device.
  • the locking device ensures that goods carriers are blocked on the switch tongue as long as the switch tongue is not correctly connected to the stationary rail section.
  • FIGS. 3a and 3b A third exemplary embodiment of the invention is explained below with reference to FIGS. 3a and 3b. Elements in Figures 3a and 3b, the construction or function of elements in the
  • Figures 1 a - 1 c correspond to the same reference numerals, increased by 100, so that the following part of the description can essentially be limited to the differences between the third embodiment and the first embodiment.
  • FIG. 3a shows a first stationary running rail section 107 corresponding to the running rail section 7 in FIG. 1a.
  • This track section 107 can optionally be connected via switch tongues to a (not shown) second stationary track section corresponding to the track section 9 in FIG. 1 a and a (not shown) third track section corresponding to the track section 11 in FIG. 1 a.
  • the third exemplary embodiment according to FIGS. 3a and 3b corresponds to the first exemplary embodiment according to FIGS. 1 a - 1 c.
  • 3a shows a switch tongue 115 in its first position, namely the connection position to the first running rail section 107, in which it can forward conveyed goods carriers coming from the first running rail section 107 unhindered.
  • a locking element 147 is arranged on the inside of a leg 60 of the V-profile of the switch tongue 115, which has a first rod section 62 and which is guided in a plane parallel to the leg 60 and displaceable in a guide sleeve 61 on the leg 60, but non-rotatably has a second rod section 64 projecting at the lower end thereof laterally toward the other profile leg 63 of the switch tongue 115.
  • the blocking element 147 In the first position of the switch tongue 115 shown in FIG. 3a, the blocking element 147 is supported with its second rod section 64 on a web 65 which connects the two profile legs of the first track section 107 at the connection end of the first track section 107.
  • the locking element 147 is as far up as possible and - according to the inclination of the longitudinal axis of the first rod section 62 - moved backwards into the space between the two profile legs 60 and 63 of the switch tongue 115, so that the locking element 147 has no blocking effect may have on conveyor goods of the type shown in Fig. 1 a at 17.
  • the locking element 147 slides downward in the guide sleeve 61 relative to the switch tongue 1 15, whereby it initially moves forward supports with the second rod section 64 at the connection end of the first track section 107.
  • the blocking element 147 protrudes into the path of conveyed goods carriers (not shown) which are located on the first - 17 -
  • Track section 107 near the connection end of the first track section 107.
  • the locking element 147 could be biased by a spring force to the position shown in broken lines.
  • the other switch tongue which is in its first position when the switch tongue 115 shown is in the second position indicated by broken lines in FIG. 3b (and vice versa) is not shown in FIGS. 3a and 3b.
  • This other switch tongue is formed at its connection end to the first track section essentially in mirror image of the switch tongue 115.
  • the blocking element corresponding to the blocking element 147 of this other switch tongue protrudes blocking the transition of the other switch tongue from the second position to the first position into the path of the conveyed goods carrier on the first track section 107 before the blocking element 147 protrudes from the switch tongue 115 which changes into its second position the area of the blocking protrusion in the path of the conveyed goods carrier comes out, so that when the connecting end of the first track section 107 is open (both switch tongues in an intermediate - 18 - position) always protrudes blocking at least one of the locking elements into the path of the conveyed goods.
  • the blocking element with its second rod section 64 first abuts the front connection end of the first running rail section 107, and then it approaches as it approaches the switch tongue 115 on the first rail section 107 is increasingly pushed further into the space between the profile legs 60, 63 until it assumes the position shown in FIG. 3a.
  • the other switch tongue which, as shown in FIG. 3b, approaches its first position from the top right.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Intermediate Stations On Conveyors (AREA)
  • Chain Conveyers (AREA)

Abstract

L'invention concerne un aiguillage pour un dispositif convoyeur dans lequel des supports (17) du matériau à transporter, munis de galets de roulement (31, 33), sont guidés mobiles sur des rails de roulement. L'aiguillage présente une lame (13) qui peut être commutée entre une première et une deuxième position, relie, dans la première position, une extrémité de raccordement (45) d'un premier tronçon (7) du rail de roulement avec une extrémité de raccordement d'un deuxième tronçon (9) du rail de roulement, et est séparée, dans la deuxième position, du premier tronçon (7) dudit rail de roulement. Un dispositif d'assujettissement (43) comporte un élément de blocage (47) qui est disposé sur au moins un élément de support (5) à proximité de l'extrémité de raccordement (45) du premier tronçon (7) du rail de roulement et peut être déplacé entre une position bloquée et une position libérée. Lorsque l'extrémité de raccordement (45) du premier tronçon (7) du rail de roulement est libre, l'élément de blocage est en position bloquée pour empêcher les supports (17) du matériau à transporter, de se déplacer en direction de l'extrémité de raccordement (45) du premier tronçon (7) du rail de roulement. Lorsque la première lame d'aiguillage (13) est amenée dans sa première position, l'élément de blocage vient en prise avec une partie de cette première lame d'aiguillage (13) et est poussé de force par cette dernière en position libérée, de sorte que l'élément de blocage (47) se trouvant en position libérée laisse passer librement les supports (17) du matériau à transporter.
PCT/EP1999/001059 1998-02-19 1999-02-18 Aiguillage pour dispositif convoyeur, notamment convoyeur suspendu WO1999042388A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998106990 DE19806990C2 (de) 1998-02-19 1998-02-19 Weiche für eine Fördereinrichtung, insbesondere Hängefördereinrichtung
DE19806990.1 1998-02-19

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WO1999042388A1 true WO1999042388A1 (fr) 1999-08-26

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ID=7858309

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Application Number Title Priority Date Filing Date
PCT/EP1999/001059 WO1999042388A1 (fr) 1998-02-19 1999-02-18 Aiguillage pour dispositif convoyeur, notamment convoyeur suspendu

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WO (1) WO1999042388A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29917312U1 (de) 1999-10-01 2001-02-15 Wf Logistik Gmbh Federnde Weichen-Schaltmechanik
DE50108962D1 (de) 2000-07-11 2006-04-20 Alexander Lechner Transportanlage
DE102012015040A1 (de) * 2012-07-28 2014-05-15 Volkswagen Aktiengesellschaft Schwerkraftförderanlage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4014269A (en) * 1975-10-29 1977-03-29 Bedford Beryl A Safety stop for overhead track switch
US4453469A (en) * 1982-04-05 1984-06-12 Bedford Beryl A Trolley stop for track switch
DE3519481C2 (fr) 1985-05-31 1989-03-16 Franz 8741 Unterelsbach De Gaertner

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2908369C3 (de) * 1979-03-03 1981-10-01 Röhling Anlagenbau GmbH u. Co, 4390 Gladbeck Weiche für eine Laufschienen aufweisende Hängebahneinrichtung
DE29615268U1 (de) * 1996-09-02 1998-01-08 Golz, Friedrich, 97799 Zeitlofs Weiche

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4014269A (en) * 1975-10-29 1977-03-29 Bedford Beryl A Safety stop for overhead track switch
US4453469A (en) * 1982-04-05 1984-06-12 Bedford Beryl A Trolley stop for track switch
DE3519481C2 (fr) 1985-05-31 1989-03-16 Franz 8741 Unterelsbach De Gaertner

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DE19806990C2 (de) 2000-03-09
DE19806990A1 (de) 1999-09-02

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