EP0538760B1 - Conveyor and endless chain assembly for railway track working machines - Google Patents

Conveyor and endless chain assembly for railway track working machines Download PDF

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Publication number
EP0538760B1
EP0538760B1 EP92117802A EP92117802A EP0538760B1 EP 0538760 B1 EP0538760 B1 EP 0538760B1 EP 92117802 A EP92117802 A EP 92117802A EP 92117802 A EP92117802 A EP 92117802A EP 0538760 B1 EP0538760 B1 EP 0538760B1
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EP
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Prior art keywords
excavating
chain
clearing
track
machine
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EP92117802A
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German (de)
French (fr)
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EP0538760A1 (en
Inventor
Josef Ing. Theurer
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Franz Plasser Bahnbaumaschinen Industrie GmbH
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Franz Plasser Bahnbaumaschinen Industrie GmbH
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B27/00Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers
    • E01B27/06Renewing or cleaning the ballast in situ, with or without concurrent work on the track
    • E01B27/10Renewing or cleaning the ballast in situ, with or without concurrent work on the track without taking-up track

Definitions

  • the invention relates to a conveyor or clearing chain arrangement for track construction machines, in particular for a ballast bed cleaning machine, for receiving and transporting ballast ballast, with an endless conveyor or clearing chain arranged on a machine frame and guided in a height-adjustable guide channel and connected to a chain drive , wherein the guide channel has a clearing bar located below the track during work and, in the case of an inclined arrangement, a higher discharge point distant in the machine longitudinal direction from the clearing bar and is formed in the transition region to the clearing bar in a direction approximately parallel to the track plane, and furthermore the clearing bar for the purpose of changing the effective clearing width is designed to be pivotable or adjustable in the horizontal plane.
  • Such a conveyor or clearing chain arrangement is already known, according to US Pat. No. 3,850,251, in which an endless conveyor or clearing chain is arranged on the machine frame of a ballast bed cleaning machine which can be moved by rail and is designed such that it can be adjusted in height.
  • the chain is passed under the track grate and further along a machine's long side in an ascending chain guide longitudinal track to a downstream screening plant, into which the ballast ballast is dropped for cleaning.
  • the chain is then returned to the pick-up point in a longitudinal path leading down the other side of the machine.
  • a chain drive is located at the upper deflection point.
  • the lower ends of the guide channels or chain guide longitudinal tracks, which are bent in the horizontal plane, are connected to one another by a clearing bar, which consists of two parts or elements. These elements are connected both to the longitudinal tracks and to one another in an articulated manner and can be pivoted in the horizontal plane - with the V-shaped bend of the clearing beam and spreading the longitudinal tracks against one another.
  • the length of the clearing beam which can be brought into contact with the ballast is adjustable, so that the cleaning machine can also be used in switch areas in which the track grate or the ballast bed is wider than on the track.
  • Another according to the preamble of claim 1, known according to US-PS 4,614,238 conveyor or clearing chain arrangement also has an endless clearing chain, which is based on chain guide longitudinal tracks and a clearing bar which can be carried out under the track and is constructed in two parts is arranged on the machine frame of a ballast bed cleaning machine in a height-adjustable manner.
  • the two elements of the clearing beam are either articulated or telescopically connected to each other and are adjusted against each other by means of a drive, whereby the length of the clearing beam can be changed to adapt to different track widths.
  • ballast bed cleaning machine in which a broaching member, each with its own endless broaching chain, is arranged such that it can be adjusted in height.
  • the clearing elements are mounted on the machine frame so as to be pivotable about a horizontal axis running in the cross-machine direction and are swiveled or lowered into the ballast bed flanks at the start of work, after which they are rotated about a vertical axis into a working position below the track grate.
  • the ballast brought by these clearing elements to the two sides of the track must be transported up to a screening plant using a bucket chain and conveyor belts.
  • a ballast clearing machine described in US Pat. No. 4,882,860 has a clearing member with an endless chain which is height-adjustable on a long side of a machine frame and is pivotably mounted about a vertical axis and can be pivoted in under the track grate for work.
  • the picked up ballast is conveyed up by the chain and thrown onto a transport conveyor belt running above the machine frame in the machine longitudinal direction.
  • the clearing element cannot be adjusted in height in its position of use, so that the clearing depth cannot be changed or adapted to different circumstances.
  • the acute-angled deflection of the chain to raise the ballast is complex and associated with increased wear in the arch area. This configuration also makes the space requirement in the area of the sleeper head relatively large, which considerably limits the possible uses in the area of switches.
  • ballast cleaning machine which is equipped on both longitudinal sides with swiveling elements that have an endless chain of clearing and can be swiveled under a vertical axis under the track.
  • the ballast cleared by them to the side of the track bed is lifted conveyed up and deposited on longitudinal conveyor belts for removal.
  • the object of the present invention is to create a clearing chain arrangement that can be used with minimal changeover times in tracks or switch areas with different ballast bed widths.
  • the processing of turnouts is thus possible in particular without any interruption of the machine's right of way, manual retrofitting or length change of the clearing chain also being unnecessary.
  • the operator only needs to clear the clearing unit on the side of the branch track using the remote control device in the work cabin of the cleaning machine adjust in the transverse direction of the track.
  • the clearing chain can be continuously adapted to the changing width of the ballast bed with minimal effort, without having to stop the machine.
  • the measure according to claim 5 is also expedient, thereby ensuring that the ballast entrained by the clearing chain is also completely deflected in the direction of the ascending guideway and is not thrown to the side in an uncontrolled manner by the centrifugal force.
  • each clearing unit is designed in accordance with claim 6, the completely unimpeded pivotability of the clearing unit in the transverse direction of the track as well as vertically - for example when the transfer position is assumed - is thereby advantageously ensured.
  • the advantage of the development of the invention set out in claim 7 is that the space requirement of the clearing chain arrangement in the area directly next to the sleeper heads is kept as small as possible, so that the cleaning machine even in unfavorable space conditions - e.g. at the point in switches, where the long switch sleepers are replaced by normal sleepers - can be used optimally.
  • the design of the arrangement according to claim 8 allows on the one hand the maximum pivoting of the two clearing beams to each other in the normal track, without hindering each other; on the other hand, the greatest possible clearing width is achieved when a clearing unit is fully swiveled out in the switch area.
  • a broaching chain designed according to claims 9 and 10 can be easily guided around all deflection points and changes in direction of the chain guide longitudinal tracks and the broaching bar in all positions with a minimum of wear and a maximum of safety.
  • the development according to claim 11 ensures the necessary compensation of the change in length of the orbit of the clearing chain when pivoting the clearing bar about its vertical pivot axis, so that the chain remains constant and evenly tensioned.
  • a track construction machine shown in FIG. 1 and designed as a ballast bed cleaning machine 1 has a machine frame 4 which can be moved on a track 3 by means of running gears 2.
  • the working direction of the machine 1 is indicated by an arrow 5.
  • a conveyor or clearing chain arrangement 6 provided on the machine frame 4 consists of two broaching units 7, 8 which are horizontally opposite one another with respect to the longitudinal axis of the machine, each of which has an endless conveyor or clearing chain 10 which is guided in a guide channel and connected to a chain drive 9.
  • Each clearing unit 7, 8 can be adjusted to the machine frame 4 by means of its own height adjustment drive 11 and transverse adjustment drive 12 and for receiving ballast ballast on a bed located under the track 3 Ballast receiving point 13 and transport of this ballast to a higher discharge point 14 arranged downstream in the working direction. Subsequently, the ballast falls into a screening system 15 having an eccentric drive and is cleaned therein.
  • a conveyor belt 16 serves to reintroduce the cleaned ballast into or under the track 3, while the overburden is transported away via a conveyor system 17.
  • a track lifting unit 18 is fastened to the machine frame 4 in the area of the receiving point 13.
  • An auxiliary chain 19 is arranged directly upstream of each clearing unit 7, 8 in the working direction.
  • the auxiliary chain 19 is arranged on the machine frame 4 so that it can be adjusted in height by means of a drive 20, and its mode of operation will be explained later. All of the drives and units provided on the machine 1, including the travel drive, are supplied with power via an energy center 21 and controlled using an operating device 23 housed in a work cabin 22.
  • each of the two clearing units 7, 8 has an obliquely ascending or descending longitudinal chain guide track 24, 25 and a clearing bar 26 in the form of a chain guide element 27 which can be pivoted in a horizontal plane to the longitudinal tracks to guide its endless clearing chain 10.
  • the two longitudinal chain guide tracks 24, 25 of each clearing unit 7, 8 are arranged directly next to one another in the transverse direction of the machine and are formed in the transition region to the clearing bar 26 in a direction approximately parallel to the track plane (see FIG. 1).
  • the chain drive 9 is located in each case at the upper deflection point of the clearing chains 10, which is assigned to the discharge point 14.
  • Each clearing unit 7, 8 is articulated with its upper end region on the machine frame 4, wherein a joint which can move on all sides within a small swivel range can be provided for storage.
  • the chain guide elements 27 or broaching bars 26 are bar-shaped and can be arranged around a vertical swivel axis 28 arranged at one end by means of their own swivel drive 29 between an approximately parallel position to the track axis 30 (shown in broken lines in FIG. 2) and an approximately be pivoted in the transverse direction of use. In the latter position, the two broaching beams 26 - as seen in the longitudinal direction of the track - are arranged one behind the other, the length of the Direction of work of the front broach corresponds approximately to the length of a sleeper in the track.
  • each bar-shaped chain guide element 27 there is a deflection roller 31 for changing or reversing the direction of the clearing chain 10 guided along both longitudinal sides of the chain guide element 27.
  • the direction of rotation of the two clearing chains 10 is in opposite directions, so that the clearing units 7, 8 each form part of the ballast ballast convey to opposite side of the track bed.
  • each clearing unit 7, 8 is equipped with a deflection plate 33, which is fastened on the outside to the horizontal part of the longitudinal chain guide track 24 and runs vertically and approximately parallel to the longitudinal axis of the machine and serves to deflect the ballast.
  • the clearing chains 10 have clearing blades 34 which - to form the chain - are articulated on all sides by means of universal joints 32. Because of these universal joints, the clearing chains 10 can be deflected in any direction.
  • the clearing chains 10 are guided in the transition area formed by the descending chain guide longitudinal track 25 with the chain guide element 27 pivoted in the machine transverse direction with the aid of guide rollers 35 with vertically extending axes of rotation 36.
  • the guide rollers attached to the chain guide longitudinal track 25 serve to support the free ends of the Scraper blades 34, which are provided with scratch fingers 54.
  • other types of clearing chain guidance not shown here, would also be conceivable in this area.
  • the two clearing units 7, 8 are in the raised position shown in dash-dotted lines in FIG. 1, with clearing bars 26 aligned approximately parallel to the longitudinal axis of the machine
  • the auxiliary chains 19 are lowered into the ballast ballast while the machine is slowly moving forward.
  • the respective clearing unit 7, 8 or clearing beam 26 is then lowered by means of the height adjustment drive 11, while the auxiliary chains 19 are raised again and put out of operation.
  • the chain drive 9 switched on, the clearing beams 26 are pivoted in under the track grating by means of the pivoting drives 29.
  • the resulting relaxation of the tension of the clearing chain 10 is compensated for by an automatic tensioning device 37 (not explained in more detail) arranged in the upper end region of the clearing unit.
  • the clearing unit on the side of the branch track is continuously adjusted by means of the transverse adjustment drive 12 in accordance with the lengthening switch sleepers. This takes place on the basis of the operating device 23 arranged in the cabin 22 without the machine 1 being stopped or the operator having to leave the cabin. If the greatest possible transverse pivoting has been achieved, the chain guide element 27 or the clearing bar 26 in question is rotated parallel to the longitudinal direction of the track, the clearing unit is lifted up and pivoted back into the machine frame 4.
  • a clearing unit 38 of a further embodiment of the invention is illustrated in a very schematic manner in FIG. 3, namely the one on the right with respect to a working direction 39 (the clearing unit opposite is not shown here for the sake of a better overview).
  • a conveyor or clearing chain 41 driven by a chain drive 40 and guided in a guide channel is formed from clearing blades 42 which are connected to one another via universal joints 55.
  • the clearing chain can be swiveled in under the track at a receiving point 45 using a horizontally pivotable clearing bar 44.
  • the ascending and descending chain guide longitudinal tracks 47, 48 leading the clearing chain 41 to and from a higher-lying discharge point 46 arranged downstream in the working direction are arranged one above the other - especially in the area adjacent to the sleeper heads 49 of the track 43 - by the width measured in the transverse direction of the track to be able to design the clearing unit 38 as narrow as possible.
  • a swivel drive for swiveling the clearing bar 44 about a vertical swivel axis 51, based on the working position of the clearing unit 38, is indicated at 50.
  • the height and cross adjustment of the clearing unit 38 is carried out by height and cross adjustment drives 52, 53.

Abstract

Conveying or clearing chain arrangement (6) for a ballast bed cleaning machine (1) with, arranged on a machine frame (4) and guided in a height-adjustable guide duct, an endless conveying or clearing chain (10) which is connected to a chain drive (9). The guide duct has, situated under the track (3) in working use, a clearing beam (26) and, in the case of inclined arrangement, a higher-situated discharge station (14) at a distance from the clearing beam in the longitudinal direction of the machine. The clearing beam (26) is designed to be pivotable or displaceable for the purpose of changing the effective clearing width in the horizontal plane. There are provided - forming in each case an independent clearing unit (7, 8) having its own vertical and transverse displacement drives (11, 12) - two clearing beams (26) designed to be separate from one another, each clearing unit (7, 8) being assigned an endless clearing chain (10) with a chain drive (9) as well as two longitudinal chain-guide webs (24, 25) situated on the same longitudinal side of the machine. <IMAGE>

Description

Die Erfindung betrifft eine Förder- bzw. Räumkettenanordnung für Gleisbaumaschinen, insbesondere für eine Schotterbett-Reinigungsmaschine, zur Aufnahme und zum Transport von Bettungsschotter, mit einer an einem Maschinenrahmen angeordneten und in einem höhenverstellbaren Führungskanal geführten, mit einem Kettenantrieb verbundenen endlosen Förder- bzw. Räumkette, wobei der Führungskanal einen im Arbeitseinsatz unterhalb des Gleises befindlichen Räumbalken und bei geneigter Anordnung eine in Maschinenlängsrichtung vom Räumbalken distanzierte, höhergelegene Abwurfstelle aufweist und im Übergangsbereich zum Räumbalken in eine zur Gleisebene etwa parallele Richtung abgebogen ausgebildet ist, und wobei ferner der Räumbalken zwecks Veränderung der effektiven Räumbreite in horizontaler Ebene verschwenk- oder verstellbar ausgebildet ist.The invention relates to a conveyor or clearing chain arrangement for track construction machines, in particular for a ballast bed cleaning machine, for receiving and transporting ballast ballast, with an endless conveyor or clearing chain arranged on a machine frame and guided in a height-adjustable guide channel and connected to a chain drive , wherein the guide channel has a clearing bar located below the track during work and, in the case of an inclined arrangement, a higher discharge point distant in the machine longitudinal direction from the clearing bar and is formed in the transition region to the clearing bar in a direction approximately parallel to the track plane, and furthermore the clearing bar for the purpose of changing the effective clearing width is designed to be pivotable or adjustable in the horizontal plane.

Es ist bereits - gemäß US-PS 3,850,251 - eine derartige Förder- bzw. Räumkettenanordnung bekannt, bei der eine endlose Förder- bzw. Räumkette am Maschinenrahmen einer schienenverfahrbaren Schotterbett-Reinigungsmaschine angeordnet und zu diesem höhenverstellbar ausgebildet ist. Die Kette wird zum Zweck der Schotteraufnahme quer unter dem Gleisrost hindurchgeführt und weiters entlang einer Maschinenlängsseite in einer aufsteigenden Kettenführungs-Längsbahn zu einer in Arbeitsrichtung nachgeordneten Siebanlage, in die der Bettungsschotter zur Reinigung abgeworfen wird. Danach wird die Kette in einer an der anderen Maschinenlängsseite abwärtsführenden Längsbahn wieder zur Aufnahmestelle zurückgeführt. Am oberen Umlenkpunkt befindet sich ein Kettenantrieb. Die unteren, in horizontaler Ebene abgebogenen Enden der Führungskanäle bzw. KettenführungsLängsbahnen sind über einen Räumbalken miteinander verbunden, der aus zwei Teilen oder Elementen besteht. Diese Elemente sind sowohl mit den Längsbahnen als auch miteinander gelenkig verbunden und können in horizontaler Ebene - unter V-förmiger Abknickung des Räumbalkens und Spreizung der Längsbahnen gegeneinander - verschwenkt werden. Auf diese Weise ist die mit dem Schotter in Kontakt bringbare Länge des Räumbalkens verstellbar, so daß die Reinigungsmaschine auch in Weichenbereichen eingesetzt werden kann, in denen der Gleisrost bzw. die Schotterbettung breiter als beim Streckengleis ist.Such a conveyor or clearing chain arrangement is already known, according to US Pat. No. 3,850,251, in which an endless conveyor or clearing chain is arranged on the machine frame of a ballast bed cleaning machine which can be moved by rail and is designed such that it can be adjusted in height. For the purpose of picking up the ballast, the chain is passed under the track grate and further along a machine's long side in an ascending chain guide longitudinal track to a downstream screening plant, into which the ballast ballast is dropped for cleaning. The chain is then returned to the pick-up point in a longitudinal path leading down the other side of the machine. A chain drive is located at the upper deflection point. The lower ends of the guide channels or chain guide longitudinal tracks, which are bent in the horizontal plane, are connected to one another by a clearing bar, which consists of two parts or elements. These elements are connected both to the longitudinal tracks and to one another in an articulated manner and can be pivoted in the horizontal plane - with the V-shaped bend of the clearing beam and spreading the longitudinal tracks against one another. In this way, the length of the clearing beam which can be brought into contact with the ballast is adjustable, so that the cleaning machine can also be used in switch areas in which the track grate or the ballast bed is wider than on the track.

Eine weitere dem Oberbegriff des Anspruchs 1 entsprechende, gemäß US-PS 4,614,238 bekannte Förder- bzw. Räumkettenanordnung weist ebenso eine endlose Räumkette auf, die an Hand von Kettenführungs-Längsbahnen und einem unter dem Gleis durchführbaren und zweiteilig ausgebildeten Räumbalken am Maschinenrahmen einer Schotterbett-Reinigungsmaschine höhenverstellbar angeordnet ist. Die beiden Elemente des Räumbalkens sind entweder gelenkig oder teleskopisch miteinander verbunden und werden mittels eines Antriebes gegeneinander verstellt, wodurch sich die Länge des Räumbalkens zur Anpassung an verschiedene Gleisbreiten verändern läßt. Besonders bei der teleskopischen Ausführung ist es jedoch erforderlich, im Falle einer Verlängerung oder Verkürzung des Räumbalkens auch die Länge der Räumkette zu verändern, um sie der veränderten Gesamtlänge der Umlaufbahn anzupassen.Another according to the preamble of claim 1, known according to US-PS 4,614,238 conveyor or clearing chain arrangement also has an endless clearing chain, which is based on chain guide longitudinal tracks and a clearing bar which can be carried out under the track and is constructed in two parts is arranged on the machine frame of a ballast bed cleaning machine in a height-adjustable manner. The two elements of the clearing beam are either articulated or telescopically connected to each other and are adjusted against each other by means of a drive, whereby the length of the clearing beam can be changed to adapt to different track widths. In the telescopic version in particular, however, it is necessary to change the length of the clearing chain in the event of an extension or a shortening of the clearing beam in order to adapt it to the changed total length of the orbit.

Es ist auch - gemäß DE-OS 22 26 612 - eine Schotterbett-Reinigungsmaschine bekannt, bei der an jeder Maschinenlängsseite ein Räumorgan mit jeweils einer eigenen endlosen Räumkette höhenverstellbar angeordnet ist. Die Räumorgane sind am Maschinenrahmen um eine horizontale, in Maschinenquerrichtung verlaufende Achse verschwenkbar gelagert und werden zu Arbeitsbeginn in die Schotterbettflanken abgeschwenkt bzw. -gesenkt, wonach sie um eine vertikale Achse in eine Arbeitsstellung unterhalb des Gleisrostes gedreht werden. Der von diesen Räumorganen zu den beiden Gleislängsseiten verbrachte Schotter muß jeweils mittels einer Eimerkette und Förderbändern zu einer Siebanlage hochtransportiert werden.It is also known - according to DE-OS 22 26 612 - a ballast bed cleaning machine in which a broaching member, each with its own endless broaching chain, is arranged such that it can be adjusted in height. The clearing elements are mounted on the machine frame so as to be pivotable about a horizontal axis running in the cross-machine direction and are swiveled or lowered into the ballast bed flanks at the start of work, after which they are rotated about a vertical axis into a working position below the track grate. The ballast brought by these clearing elements to the two sides of the track must be transported up to a screening plant using a bucket chain and conveyor belts.

Eine in der US-PS 4,882,860 beschriebene Schotterräummaschine weist ein Räumorgan mit einer Endloskette auf, das an einer Längsseite eines Maschinenrahmens höhenverstellbar und um eine vertikale Achse verschwenkbar gelagert sowie für den Arbeitseinsatz unter den Gleisrost einschwenkbar ist. Der aufgenommene Schotter wird von der Kette hochgefördert und auf ein oberhalb des Maschinenrahmens in Maschinenlängsrichtung verlaufendes Transportförderband geworfen. Das Räumorgan ist in seiner Einsatzstellung nicht höhenverstellbar, wodurch die Räumtiefe nicht verändert bzw. unterschiedlichen Gegebenheiten angepaßt werden kann. Die spitzwinkelige Umlenkung der Kette zur Hochführung des Schotters ist aufwendig und mit erhöhtem Verschleiß im Bogenbereich verbunden. Auch wird durch diese Ausbildung der Platzbedarf im Schwellenvorkopfbereich relativ groß, wodurch die Einsatzmöglichkeiten im Weichenbereich erheblich eingeschränkt sind.A ballast clearing machine described in US Pat. No. 4,882,860 has a clearing member with an endless chain which is height-adjustable on a long side of a machine frame and is pivotably mounted about a vertical axis and can be pivoted in under the track grate for work. The picked up ballast is conveyed up by the chain and thrown onto a transport conveyor belt running above the machine frame in the machine longitudinal direction. The clearing element cannot be adjusted in height in its position of use, so that the clearing depth cannot be changed or adapted to different circumstances. The acute-angled deflection of the chain to raise the ballast is complex and associated with increased wear in the arch area. This configuration also makes the space requirement in the area of the sleeper head relatively large, which considerably limits the possible uses in the area of switches.

Schließlich ist noch - gemäß GB-PS 883,638 - eine Schotterreinigungsmaschine bekannt, die auf beiden Längsseiten mit um eine vertikale Achse unter das Gleis einschwenkbaren, je eine endlose Räumkette aufweisenden Räumorganen ausgestattet ist. Der von diesen zu den Gleisbettflanken geräumte Schotter wird mittels Elevatoren hochgefördert und zum Abtransport auf Längsförderbänder abgelagert. Diese Lösung ist konstruktiv sehr aufwendig und aufgrund der zweifachen Schotteraufnahme unterhalb des Gleises sowie im Schulterbereich der Bettung leistungsmäßig eingeschränkt.Finally - according to GB-PS 883,638 - a ballast cleaning machine is known, which is equipped on both longitudinal sides with swiveling elements that have an endless chain of clearing and can be swiveled under a vertical axis under the track. The ballast cleared by them to the side of the track bed is lifted conveyed up and deposited on longitudinal conveyor belts for removal. This solution is structurally very complex and, due to the double ballast pick-up below the track and in the shoulder area of the bedding, its performance is limited.

Die Aufgabe der vorliegenden Erfindung liegt nun in der Schaffung einer Räumkettenanordnung, die mit minimalen Umrüstzeiten in Gleisen bzw. Weichenbereichen mit unterschiedlichen Schotterbettbreiten einsetzbar ist.The object of the present invention is to create a clearing chain arrangement that can be used with minimal changeover times in tracks or switch areas with different ballast bed widths.

Diese Aufgabe wird mit einer Räumkettenanordnung der eingangs beschriebenen Art dadurch gelöst, daß - unter Bildung jeweils einer unabhängigen, eigene Höhen- und Querverstellantriebe aufweisenden Räumeinheit - zwei getrennt voneinander ausgebildete Räumbalken vorgesehen sind, wobei jeder Räumeinheit eine endlose Räumkette mit einem Kettenantrieb sowie zwei jeweils auf derselben Maschinenlängsseite befindliche Kettenfü hru ngs-Längsbahnen zugeordnet sind.This object is achieved with a clearing chain arrangement of the type described in the introduction in that - with the formation of an independent clearing unit each having its own height and transverse adjustment drives - two clearing beams are provided, each clearing chain having an endless clearing chain with a chain drive and two each Chain guide longitudinal tracks located on the same machine longitudinal side are assigned.

Mit dieser Erfindung ist unter Beibehaltung des im Einsatz bereits bestens bewährten, leistungsfähigen Konzeptes einer in Maschinenlängsrichtung geneigten, das Gleis umfassenden Räumkette eine besonders einfache und rasche Anpassung an unterschiedliche Gleisbreiten zur problemlosen Reinigung von Weichenabschnitten möglich. Für diese Anpassung ist lediglich eine Querverstellung der beiden Räumeinheiten zueinander erforderlich, wobei sich der Überlappungsgrad der beiden voneinander unabhängigen Räumbalken zur Veränderung des den Schotter seitlich wegfördernden Arbeitsbereiches ändert. Diese Veränderung der Arbeitsbreite ist stufenlos und ohne Unterbrechung der Arbeitsvorfahrt erzielbar. Ebenso erübrigt sich eine arbeits- und zeitaufwendige Veränderung der Räumkettenlänge. Da sich die beiden Räumeinheiten von der Schotterbettflanke ausgehend gleichsam selbsttätig in die Schotterbettung hineinarbeiten können, ist ein besonders rascher Arbeitseinsatz möglich bzw. sind arbeits- und zeitaufwendige Vorarbeiten, wie z.B. die Trennung des Gleises, nicht erforderlich.With this invention, a particularly simple and rapid adaptation to different track widths for problem-free cleaning of switch sections is possible while maintaining the already proven, efficient concept of a clearing chain inclined in the machine longitudinal direction and comprising the track. All that is required for this adaptation is a transverse adjustment of the two clearing units to one another, the degree of overlap of the two mutually independent clearing beams changing to change the working area which laterally conveys the ballast away. This change in working width is infinitely variable and can be achieved without interrupting the right of way. A laborious and time-consuming change in the chain length is also unnecessary. Since the two clearing units can work their own way into the ballast bed from the side of the ballast bed, particularly rapid work is possible or labor-intensive and time-consuming preliminary work, such as the separation of the track, not necessary.

Speziell bei einer Weiterbildung gemäß Anspruch 2 ist damit insbesondere die Bearbeitung von Weichen ohne jedwede Unterbrechung der Arbeitsvorfahrt der Maschine möglich, wobei sich auch ein manuelles Umrüsten oder eine Längenveränderung der Räumkette erübrigt. Zur Schotterreinigung in Weichenbereichen muß die Bedienungsperson in der Arbeitskabine der Reinigungsmaschine lediglich die auf der Seite des Abzweiggleises befindliche Räumeinheit an Hand der Fernbedienungseinrichtung in Gleisquerrichtung verstellen. So kann mit minimalem Aufwand die Räumkette der sich ändernden Breite der Schotterbettung kontinuierlich angepaßt werden, ohne die Maschine anhalten zu müssen.Especially in a further development according to claim 2, the processing of turnouts is thus possible in particular without any interruption of the machine's right of way, manual retrofitting or length change of the clearing chain also being unnecessary. For ballast cleaning in switch areas, the operator only needs to clear the clearing unit on the side of the branch track using the remote control device in the work cabin of the cleaning machine adjust in the transverse direction of the track. In this way, the clearing chain can be continuously adapted to the changing width of the ballast bed with minimal effort, without having to stop the machine.

Die in den Ansprüchen 3 und 4 dargelegten Weiterbildungen der Erfindung ermöglichen bei großer konstruktiver Einfachheit und daher Robustheit der Räumkettenanordnung auch eine besonders einfache Überstellung des Räumbalkens in die unter dem Gleis befindliche Arbeitsstellung durch fernsteuerbares Einschwenken mittels des Verschwenkantriebes.The further developments of the invention set out in claims 3 and 4, with great structural simplicity and therefore robustness of the clearing chain arrangement, also allow a particularly simple transfer of the clearing bar into the working position located under the track by remotely controllable pivoting by means of the pivoting drive.

Zweckmäßig ist weiters die Maßnahme gemäß Anspruch 5, wodurch sichergestellt wird, daß der von der Räumkette mitgerissene Schotter auch zur Gänze in Richtung zur aufsteigenden Führungsbahn umgelenkt und nicht durch die Zentrifugalkraft unkontrolliert zur Seite geschleudert wird.The measure according to claim 5 is also expedient, thereby ensuring that the ballast entrained by the clearing chain is also completely deflected in the direction of the ascending guideway and is not thrown to the side in an uncontrolled manner by the centrifugal force.

Ist jede Räumeinheit gemäß Anspruch 6 ausgebildet, so wird dadurch in vorteilhafter Weise die völlig ungehinderte Verschwenkbarkeit der Räumeinheit sowohl in Gleisquerrichtung als auch vertikal - etwa bei Einnehmen der Überstellposition - gewährleistet.If each clearing unit is designed in accordance with claim 6, the completely unimpeded pivotability of the clearing unit in the transverse direction of the track as well as vertically - for example when the transfer position is assumed - is thereby advantageously ensured.

Der Vorteil der in Anspruch 7 dargelegten Weiterbildung der Erfindung liegt darin, daß der Platzbedarf der Räumkettenanordnung im Bereich direkt neben den Schwellenköpfen möglichst gering gehalten wird, wodurch die Reinigungsmaschine auch bei ungünstigen Raumverhältnissen - z.B. an der Stelle in Weichen, wo die langen Weichenschwellen wieder von Normalschwellen abgelöst werden - optimal einsetzbar ist.The advantage of the development of the invention set out in claim 7 is that the space requirement of the clearing chain arrangement in the area directly next to the sleeper heads is kept as small as possible, so that the cleaning machine even in unfavorable space conditions - e.g. at the point in switches, where the long switch sleepers are replaced by normal sleepers - can be used optimally.

Die Ausbildung der Anordnung gemäß Anspruch 8 ermöglicht einerseits das maximale Einschwenken der beiden Räumbalken zueinander im normalen Streckengleis, ohne einander zu behindern; andererseits wird so aber auch die größtmögliche Räumbreite bei im Weichenbereich voll ausgeschwenkter Stellung einer Räumeinheit erzielt.The design of the arrangement according to claim 8 allows on the one hand the maximum pivoting of the two clearing beams to each other in the normal track, without hindering each other; on the other hand, the greatest possible clearing width is achieved when a clearing unit is fully swiveled out in the switch area.

Eine gemäß den Ansprüchen 9 und 10 ausgebildete Räumkette ist problemlos um sämtliche Umlenkpunkte und Richtungsänderungen der Kettenführungs-Längsbahnen und des Räumbalkens in allen Positionen bei einem Mindestmaß an Verschleiß sowie Höchstmaß an Sicherheit führbar.A broaching chain designed according to claims 9 and 10 can be easily guided around all deflection points and changes in direction of the chain guide longitudinal tracks and the broaching bar in all positions with a minimum of wear and a maximum of safety.

Die Weiterbildung nach Anspruch 11 sorgt für den notwendigen Ausgleich der Längenveränderung der Umlaufbahn der Räumkette beim Verschwenken des Räumbalkens um seine vertikale Schwenkachse, so daß die Kette konstant und gleichmäßig gespannt bleibt.The development according to claim 11 ensures the necessary compensation of the change in length of the orbit of the clearing chain when pivoting the clearing bar about its vertical pivot axis, so that the chain remains constant and evenly tensioned.

Schließlich ist eine weitere vorteilhafte Ausbildung in Anspruch 12 dargelegt. Damit wird die Möglichkeit geschaffen, zu Beginn des Arbeitseinsatzes einen Graben in die Schotterbettflanke zu fräsen, um den - in Maschinenlängsrichtung positionierten - Räumbalken darin unter die Gleisebene abzusenken, von wo er anschließend in horizontaler Ebene unter den Gleisrost verschwenkt werden kann.Finally, a further advantageous embodiment is set out in claim 12. This creates the possibility of milling a trench into the ballast bed flank at the start of work in order to lower the clearing beam - positioned in the machine's longitudinal direction - below the track level, from where it can then be pivoted in a horizontal plane under the track grate.

Die Erfindung wird nachstehend an Hand der in den Zeichnungen dargestellten Ausführungsbeispiele näher erläutert.The invention is explained below with reference to the embodiments shown in the drawings.

Es zeigen:

  • Fig.1 eine vereinfachte teilweise Seitenansicht einer Schotterbett-Reinigungsmaschine mit einer erfindungsgemäßen Räumkettenanordnung,
  • Fig.2 eine vergrößerte Draufsicht auf die aus zwei Räumeinheiten bestehende Räumkettenanordnung nach Fig.1 und
  • Fig.3 eine stark schematisierte Schrägansicht einer einzelnen Räumeinheit eines weiteren Ausführungsbeispieles.
Show it:
  • 1 shows a simplified partial side view of a ballast bed cleaning machine with a clearing chain arrangement according to the invention,
  • 2 shows an enlarged top view of the clearing chain arrangement according to FIG. 1 and consisting of two clearing units
  • 3 shows a highly schematic oblique view of an individual clearing unit of a further exemplary embodiment.

Eine in Fig.1 dargestellte, als Schotterbett-Reinigungsmaschine 1 ausgebildete Gleisbaumaschine weist einen über Fahrwerke 2 auf einem Gleis 3 verfahrbaren Maschinenrahmen 4 auf. Die Arbeitsrichtung der Maschine 1 ist durch einen Pfeil 5 angegeben. Eine am Maschinenrahmen 4 vorgesehene Förder- bzw. Räumkettenanordnung 6 besteht aus zwei bezüglich der Maschinenlängsachse einander horizontal gegenüberliegenden Räumeinheiten 7,8, die jeweils eine in einem Führungskanal geführte und mit einem Kettenantrieb 9 verbundene endlose Förder- bzw. Räumkette 10 aufweisen. Jede Räumeinheit 7,8 ist mittels eines eigenen Höhenverstellantriebes 11 und Querverstellantriebes 12 zum Maschinenrahmen 4 verstellbar und zur Aufnahme von Bettungsschotter an einer unter dem Gleis 3 befindlichen Schotteraufnahmestelle 13 und Transport dieses Schotters zu einer in Arbeitsrichtung nachgeordneten, höher gelegenen Abwurfstelle 14 ausgebildet. In weiterer Folge fällt der Schotter in eine einen Exzenterantrieb aufweisende Siebanlage 15 und wird darin gereinigt. Ein Förderband 16 dient zum Wiedereinbringen des gereinigten Schotters ins bzw. unter das Gleis 3, während der Abraum über eine Förderanlage 17 abtransportiert wird. Im Bereich der Aufnahmestelle 13 ist am Maschinenrahmen 4 ein Gleishebeaggregat 18 befestigt.A track construction machine shown in FIG. 1 and designed as a ballast bed cleaning machine 1 has a machine frame 4 which can be moved on a track 3 by means of running gears 2. The working direction of the machine 1 is indicated by an arrow 5. A conveyor or clearing chain arrangement 6 provided on the machine frame 4 consists of two broaching units 7, 8 which are horizontally opposite one another with respect to the longitudinal axis of the machine, each of which has an endless conveyor or clearing chain 10 which is guided in a guide channel and connected to a chain drive 9. Each clearing unit 7, 8 can be adjusted to the machine frame 4 by means of its own height adjustment drive 11 and transverse adjustment drive 12 and for receiving ballast ballast on a bed located under the track 3 Ballast receiving point 13 and transport of this ballast to a higher discharge point 14 arranged downstream in the working direction. Subsequently, the ballast falls into a screening system 15 having an eccentric drive and is cleaned therein. A conveyor belt 16 serves to reintroduce the cleaned ballast into or under the track 3, while the overburden is transported away via a conveyor system 17. A track lifting unit 18 is fastened to the machine frame 4 in the area of the receiving point 13.

Jeder Räumeinheit 7,8 in Arbeitsrichtung unmittelbar vorgeordnet ist je eine Hilfskette 19, die mittels eines Antriebes 20 höhenverstellbar am Maschinenrahmen 4 angeordnet ist und deren Arbeitsweise an späterer Stelle erläutert wird. Sämtliche auf der Maschine 1 vorgesehenen Antriebe und Aggregate einschließlich des Fahrantriebes werden über eine Energiezentrale 21 kraftversorgt und an Hand einer in einer Arbeitskabine 22 untergebrachten Bedienungseinrichtung 23 gesteuert.An auxiliary chain 19 is arranged directly upstream of each clearing unit 7, 8 in the working direction. The auxiliary chain 19 is arranged on the machine frame 4 so that it can be adjusted in height by means of a drive 20, and its mode of operation will be explained later. All of the drives and units provided on the machine 1, including the travel drive, are supplied with power via an energy center 21 and controlled using an operating device 23 housed in a work cabin 22.

In Fig.2 ist nun der genauere Aufbau der aus den Räumeinheiten 7,8 bestehenden Räumkettenanordnung 6 ersichtlich. Jede der beiden Räumeinheiten 7,8 weist zur Führung ihrer endlosen Räumkette 10 je eine schräg auf- bzw. absteigende Kettenführungs-Längsbahn 24,25 sowie einen Räumbalken 26 in Form eines zu den Längsbahnen in horizontaler Ebene verschwenkbaren Kettenführungselementes 27 auf. Die beiden Kettenführungs-Längsbahnen 24,25 jeder Räumeinheit 7,8 sind in Maschinenquerrichtung unmittelbar nebeneinander angeordnet und sind im Übergangsbereich zum Räumbalken 26 in eine zur Gleisebene etwa parallele Richtung abgebogen ausgebildet (siehe Fig.1). Der Kettenantrieb 9 befindet sich jeweils am oberen, der Abwurfstelle 14 zugeordneten Umlenkpunkt der Räumketten 10. Jede Räumeinheit 7,8 ist mit ihrem oberen Endbereich am Maschinenrahmen 4 gelenkig befestigt, wobei zur Lagerung ein in einem kleinen Schwenkbereich allseits bewegliches Gelenk vorgesehen sein kann.2 shows the more precise structure of the clearing chain arrangement 6 consisting of the clearing units 7, 8. Each of the two clearing units 7, 8 has an obliquely ascending or descending longitudinal chain guide track 24, 25 and a clearing bar 26 in the form of a chain guide element 27 which can be pivoted in a horizontal plane to the longitudinal tracks to guide its endless clearing chain 10. The two longitudinal chain guide tracks 24, 25 of each clearing unit 7, 8 are arranged directly next to one another in the transverse direction of the machine and are formed in the transition region to the clearing bar 26 in a direction approximately parallel to the track plane (see FIG. 1). The chain drive 9 is located in each case at the upper deflection point of the clearing chains 10, which is assigned to the discharge point 14. Each clearing unit 7, 8 is articulated with its upper end region on the machine frame 4, wherein a joint which can move on all sides within a small swivel range can be provided for storage.

Die Kettenführungselemente 27 bzw. Räumbalken 26 sind balkenförmig ausgebildet und können um eine an ihrem einen Ende angeordnete vertikale Schwenkachse 28 jeweils mittels eines eigenen Verschwenkantriebes 29 zwischen einer etwa parallel zur Gleisachse 30 ausgerichteten Stellung (in Fig.2 in strichpunktierten Linien gezeigt) und einer etwa in Gleisquerrichtung verlaufenden Einsatzstellung verschwenkt werden. In der letztgenannten Stellung sind die beiden Räumbalken 26 - in Gleislängsrichtung gesehen - hintereinander angeordnet, wobei die Länge des in Arbeitsrichtung vorderen Räumbalkens in etwa der Länge einer Schwelle im Streckengleis entspricht. Am freien Ende jedes balkenförmigen Kettenführungselementes 27 befindet sich eine Umlenkrolle 31 zur Richtungsänderung bzw. - umkehrung der entlang beider Längsseiten des Kettenführungselementes 27 geführten Räumkette 10. Die Umlaufrichtung der beiden Räumketten 10 ist gegenläufig, so daß die Räumeinheiten 7,8 jeweils einen Teil des Bettungsschotters zu gegenüberliegenden Gleisbettflanken fördern. Im Bereich der Schwenkachse 28 ist jede Räumeinheit 7,8 mit einer außenseitig am horizontalen Teil der Kettenführungs-Längsbahn 24 befestigten Ablenkplatte 33 ausgestattet, die vertikal und etwa parallel zur Maschinenlängsachse verläuft und der Schotterumlenkung dient.The chain guide elements 27 or broaching bars 26 are bar-shaped and can be arranged around a vertical swivel axis 28 arranged at one end by means of their own swivel drive 29 between an approximately parallel position to the track axis 30 (shown in broken lines in FIG. 2) and an approximately be pivoted in the transverse direction of use. In the latter position, the two broaching beams 26 - as seen in the longitudinal direction of the track - are arranged one behind the other, the length of the Direction of work of the front broach corresponds approximately to the length of a sleeper in the track. At the free end of each bar-shaped chain guide element 27 there is a deflection roller 31 for changing or reversing the direction of the clearing chain 10 guided along both longitudinal sides of the chain guide element 27. The direction of rotation of the two clearing chains 10 is in opposite directions, so that the clearing units 7, 8 each form part of the ballast ballast convey to opposite side of the track bed. In the area of the pivot axis 28, each clearing unit 7, 8 is equipped with a deflection plate 33, which is fastened on the outside to the horizontal part of the longitudinal chain guide track 24 and runs vertically and approximately parallel to the longitudinal axis of the machine and serves to deflect the ballast.

Die Räumketten 10 weisen Räumschaufeln 34 auf, welche - zur Bildung der Kette - miteinander mittels Universalgelenken 32 allseits gelenkig verbunden sind. Auf Grund dieser Universalgelenke sind die Räumketten 10 in jeglicher Richtung umlenkbar. Die Führung der Räumketten 10 im von der absteigenden Kettenführungs-Längsbahn 25 mit dem in Maschinenquerrichtung eingeschwenkten Kettenführungselement 27 gebildeten Übergangsbereich erfolgt mit Hilfe von Führungsrollen 35 mit vertikal verlaufenden Rotationsachsen 36. Die an der Kettenführungs-Längsbahn 25 befestigten Führungsrollen dienen zur Abstützung der freien Enden der Räumschaufeln 34, die mit Kratzerfingern 54 versehen sind. Es wären selbstverständlich auch andere, hier nicht dargestellte Arten der Räumkettenführung in diesem Bereich denkbar.The clearing chains 10 have clearing blades 34 which - to form the chain - are articulated on all sides by means of universal joints 32. Because of these universal joints, the clearing chains 10 can be deflected in any direction. The clearing chains 10 are guided in the transition area formed by the descending chain guide longitudinal track 25 with the chain guide element 27 pivoted in the machine transverse direction with the aid of guide rollers 35 with vertically extending axes of rotation 36. The guide rollers attached to the chain guide longitudinal track 25 serve to support the free ends of the Scraper blades 34, which are provided with scratch fingers 54. Of course, other types of clearing chain guidance, not shown here, would also be conceivable in this area.

Während der Überstellung der Schotterbett-Reinigungsmaschine 1 zum Einsatzort befinden sich die beiden Räumeinheiten 7,8 in der in Fig.1 in strichpunktierten Linien gezeigten, hochgehobenen Position mit etwa parallel zur Maschinenlängsachse ausgerichteten Räumbalken 26. An der Arbeitsstelle angekommen, werden zuerst im Übergangsbereich vom Strecken- zum Abzweiggleis die Hilfsketten 19 in den Bettungsschotter abgesenkt, während sich die Maschine langsam vorwärtsbewegt. In den auf diese Weise entstandenen Graben wird sodann die jeweilige Räumeinheit 7,8 bzw. der Räumbalken 26 an Hand des Höhenverstellantriebes 11 abgesenkt, während die Hilfsketten 19 wieder hochgehoben und auβer Betrieb gesetzt werden. Hierauf erfolgt - bei eingeschaltetem Kettenantrieb 9 - das Einschwenken der Räumbalken 26 unter den Gleisrost mittels der Verschwenkantriebe 29. Das dadurch bewirkte Nachlassen der Spannung der Räumkette 10 wird durch eine im oberen Endbereich der Räumeinheit angeordnete (nicht näher erläuterte) automatische Nachspannvorrichtung 37 kompensiert.During the transfer of the ballast bed cleaning machine 1 to the place of use, the two clearing units 7, 8 are in the raised position shown in dash-dotted lines in FIG. 1, with clearing bars 26 aligned approximately parallel to the longitudinal axis of the machine On the branch track, the auxiliary chains 19 are lowered into the ballast ballast while the machine is slowly moving forward. In the trench created in this way, the respective clearing unit 7, 8 or clearing beam 26 is then lowered by means of the height adjustment drive 11, while the auxiliary chains 19 are raised again and put out of operation. Then, with the chain drive 9 switched on, the clearing beams 26 are pivoted in under the track grating by means of the pivoting drives 29. The resulting relaxation of the tension of the clearing chain 10 is compensated for by an automatic tensioning device 37 (not explained in more detail) arranged in the upper end region of the clearing unit.

Fährt die Maschine 1 im Zuge der Schotterreinigung in einen (in Fig.2 in strichdoppelpunktierten Linien dargestellten) Weichenbereich ein, so wird die auf der Seite des Abzweiggleises befindliche Räumeinheit kontinuierlich mittels des Querverstellantriebes 12 in Übereinstimmung mit den länger werdenden Weichenschwellen verstellt. Dies geschieht an Hand der in der Kabine 22 angeordneten Bedienungseinrichtung 23, ohne daß dabei die Maschine 1 angehalten werden oder die Bedienungsperson die Kabine verlassen muß. Ist die weitestmögliche Querverschwenkung erreicht, so wird das betreffende Kettenführungselement 27 bzw. der Räumbalken 26 parallel zur Gleislängsrichtung gedreht, die Räumeinheit hochgehoben und wieder zum Maschinenrahmen 4 eingeschwenkt.If the machine 1 moves in the course of the ballast cleaning into a switch area (shown in dash-and-dot-dash lines in FIG. 2), the clearing unit on the side of the branch track is continuously adjusted by means of the transverse adjustment drive 12 in accordance with the lengthening switch sleepers. This takes place on the basis of the operating device 23 arranged in the cabin 22 without the machine 1 being stopped or the operator having to leave the cabin. If the greatest possible transverse pivoting has been achieved, the chain guide element 27 or the clearing bar 26 in question is rotated parallel to the longitudinal direction of the track, the clearing unit is lifted up and pivoted back into the machine frame 4.

In Fig.3 ist auf sehr schematisierte Weise eine Räumeinheit 38 einer weiteren Ausführungsform der Erfindung illustriert, und zwar die bezüglich einer Arbeitsrichtung 39 rechter Hand gelegene (die gegenüberliegende Räumeinheit ist hier der besseren Übersicht wegen nicht dargestellt). Eine mittels eines Kettenantriebes 40 angetriebene und in einem Führungskanal geführte Förder- bzw. Räumkette 41 ist aus über Universalgelenke 55 miteinander verbundenen Räumschaufeln 42 gebildet. Zur Reinigung des Schotters unter einem Gleis 43 ist die Räumkette an Hand eines horizontal verschwenkbaren Räumbalkens 44 an einer Aufnahmestelle 45 unter das Gleis einschwenkbar. Die die Räumkette 41 zu und von einer höher gelegenen, in Arbeitsrichtung nachgeordneten Abwurfstelle 46 führenden, auf- und absteigenden Kettenführungs-Längsbahnen 47,48 sind - speziell im den Schwellenköpfen 49 des Gleises 43 benachbarten Bereich - übereinander angeordnet, um die in Gleisquerrichtung gemessene Breite der Räumeinheit 38 möglichst schmal ausbilden zu können. Dadurch ist eine derartige Räumeinheit 38 auch dann einsetzbar, wenn im Schwellenvorkopfbereich nur geringer freier Raum vorhanden ist. Mit 50 ist ein Verschwenkantrieb zum Verschwenken des Räumbalkens 44 um eine - bezogen auf die Arbeitsstellung der Räumeinheit 38 - vertikale Schwenkachse 51 angedeutet. Die Höhen- und Querverstellung der Räumeinheit 38 erfolgt durch Höhen- und Querverstellantriebe 52,53.A clearing unit 38 of a further embodiment of the invention is illustrated in a very schematic manner in FIG. 3, namely the one on the right with respect to a working direction 39 (the clearing unit opposite is not shown here for the sake of a better overview). A conveyor or clearing chain 41 driven by a chain drive 40 and guided in a guide channel is formed from clearing blades 42 which are connected to one another via universal joints 55. To clean the ballast under a track 43, the clearing chain can be swiveled in under the track at a receiving point 45 using a horizontally pivotable clearing bar 44. The ascending and descending chain guide longitudinal tracks 47, 48 leading the clearing chain 41 to and from a higher-lying discharge point 46 arranged downstream in the working direction are arranged one above the other - especially in the area adjacent to the sleeper heads 49 of the track 43 - by the width measured in the transverse direction of the track to be able to design the clearing unit 38 as narrow as possible. As a result, such a clearing unit 38 can also be used when there is only a small free space in the threshold front area. A swivel drive for swiveling the clearing bar 44 about a vertical swivel axis 51, based on the working position of the clearing unit 38, is indicated at 50. The height and cross adjustment of the clearing unit 38 is carried out by height and cross adjustment drives 52, 53.

Claims (12)

  1. A conveying or excavating chain arrangement (6) for track maintenance machines, more particularly for a ballast bed cleaning machine (1), for picking up and transporting bedding ballast, comprising an endless conveying or excavating chain (10; 41) arranged on a machine frame (4) and guided in a vertically adjustable guide channel and connected to a chain drive (9; 40), wherein the guide channel has an excavating bar (26; 44) located in operative use beneath the track (3; 43) and in an inclined arrangement has an elevated discharge position (14; 46) at a distance from the excavating bar (26; 44) in the longitudinal direction of the machine, and in the transfer region to the excavating bar (26; 44) is designed so as to be deflected into a direction approximately parallel to the track plane, and wherein further the excavating bar (26; 44) is designed so as to be pivotable or adjustable in the horizontal plane in order to change the effective excavation width, characterised in that there are provided two excavating bars (26; 44), designed so as to be mutually separate, forming in each case an independent excavating unit (7, 8; 38) having separate vertical and transverse adjustment drives (11, 12; 52, 53), wherein there are associated with each excavating unit (7, 8; 38) an endless excavating chain (10; 41) with a chain drive (9; 40) and two longitudinal chain guide tracks (24, 25; 47, 48), each located on the same longitudinal side of the machine.
  2. An excavating chain arrangement according to claim 1, characterised in that in operative use the two excavating bars (26; 44) are arranged one behind the other with respect to the working direction and are each provided for picking up ballast in regions of the track bed which lie opposite each other in relation to the track axis (30).
  3. An excavating chain arrangement according to one of claims 1 or 2, characterised in that each excavating bar (26; 44) may be pivoted about a vertical swivel axis (28; 51) arranged at one of its ends by means of a pivot drive (29; 50) between a position oriented approximately parallel to the track axis (30) and a use position extending approximately in the transverse direction of the track.
  4. An excavating chain arrangement according to claim 3, characterised in that each excavating bar (26; 44) is designed for guiding the excavating chain (10; 41) along the two longitudinal sides of the excavating bar and is provided at its free end with a deflection roller (31).
  5. An excavating chain arrangement according to one of claims 1 to 4, characterised in that a baffle plate (33) extending in the vertical plane approximately parallel to the longitudinal axis of the machine is arranged at the front or lower end, in the working direction, of the longitudinal chain guide track (24) in the region adjoining the swivel axis (28) on the exterior of the machine.
  6. An excavating chain arrangement according to one of claims 1 to 5, characterised in that each excavating unit (7, 8) is mounted on the machine frame (4) so as to be universally articulated in its upper, rear end region, in the working direction.
  7. An excavating chain arrangement according to one of claims 1 to 6, characterised in that the longitudinal chain guide tracks (47, 48) associated with the same excavating unit (38) are arranged so as to be one vertically above the other at least in the region adjoining the sleeper ends (49) - in the position of use of the excavating unit.
  8. An excavating chain arrangement according to one of claims 1 to 7, characterised in that the length of each pivotable excavating bar (26; 44) approximately corresponds to the length of a normal sleeper, wherein the length of the excavating bar (26; 44) disposed in front in the working direction is greater than the length of the one disposed behind it.
  9. An excavating chain arrangement according to one of claims 1 to 8, characterised in that each excavating chain (10; 41) is composed of excavating scoops (34; 42) which are connected to one another in a universally articulated manner by means of universal joints (32; 55).
  10. An excavating chain arrangement according to one of claims 1 to 9, characterised in that in the region of the vertical swivel axis (28) of the excavating bar (26) on the side of the excavating chain (10) directed towards the machine frame (4) guide rollers (35) are provided to support the free ends of the excavating scoops (34) which have scraper fingers (54), wherein the axes of rotation (36) of the guide rollers (35) which extend vertically are arranged so as to be spaced apart from the excavating bar (26) and the longitudinal chain guide tracks (24, 25).
  11. An excavating chain arrangement according to one of claims 3 to 10, characterised in that each excavating chain (10) is provided with a retensioning device (37), preferably disposed in the upper end region of the excavating unit (7, 8), to maintain a constant chain tension.
  12. An excavating chain arrangement according to one of claims 1 to 11, characterised in that on each longitudinal side of the machine an auxiliary chain (19) which is vertically adjustable by way of a drive (20) is arranged on the machine frame (4) immediately in front of the particular excavating unit (7, 8) in the working direction.
EP92117802A 1991-10-24 1992-10-19 Conveyor and endless chain assembly for railway track working machines Expired - Lifetime EP0538760B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2124/91 1991-10-24
AT212491 1991-10-24

Publications (2)

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EP0538760A1 EP0538760A1 (en) 1993-04-28
EP0538760B1 true EP0538760B1 (en) 1994-07-27

Family

ID=3528293

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92117802A Expired - Lifetime EP0538760B1 (en) 1991-10-24 1992-10-19 Conveyor and endless chain assembly for railway track working machines

Country Status (14)

Country Link
US (1) US5271166A (en)
EP (1) EP0538760B1 (en)
JP (1) JP2962946B2 (en)
CN (1) CN1041543C (en)
AT (1) ATE109231T1 (en)
AU (1) AU653643B2 (en)
CA (1) CA2081087A1 (en)
CZ (1) CZ278537B6 (en)
DE (1) DE59200324D1 (en)
DK (1) DK0538760T3 (en)
HU (1) HU209629B (en)
PL (1) PL170271B1 (en)
RU (1) RU2062312C1 (en)
SK (1) SK320692A3 (en)

Cited By (1)

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WO2021180417A1 (en) 2020-03-11 2021-09-16 Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft M.B.H. Track construction machine having a conveying or excavating chain arrangement

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DE59306881D1 (en) * 1993-01-29 1997-08-14 Plasser Bahnbaumasch Franz Machine for extracting ballast from a track ballast bed
JPH0941305A (en) * 1995-07-26 1997-02-10 Mitsubishi Heavy Ind Ltd Working vehicle of ballast for railroad
JP3956173B2 (en) * 1998-08-25 2007-08-08 株式会社小松製作所 Roadbed ballast removal machine
AT3879U3 (en) * 2000-06-09 2001-03-26 Plasser Bahnbaumasch Franz MACHINE FOR RENEWING A TRACK
AT4370U3 (en) * 2001-04-02 2002-03-25 Plasser Bahnbaumasch Franz CLEARING CHAIN FOR A TRACKING MACHINE
CH696884A5 (en) 2003-05-06 2008-01-15 Scheuchzer Sa A method of treating ballast of a railway track.
CA2524861A1 (en) * 2004-11-03 2006-05-03 Rwf Bron Railway ballast excavator having inclined portion
US7481168B2 (en) * 2005-04-07 2009-01-27 Lawrence Glenn Pike Off-track railroad track undercutter apparatus
FR2926094B1 (en) * 2008-01-08 2009-12-11 Europ De Travaux Ferroviaires RAILWAY RENEWAL TRAIN ELEMENT COMPRISING A BALLAST REMOVAL SYSTEM.
US8904676B2 (en) 2009-10-08 2014-12-09 Dymax, Inc Undercutter device
CN102345254B (en) * 2011-06-20 2013-08-07 刘云 Rotary disc for railway stone slag roadbed sundries removal vehicle
AT511340B1 (en) * 2011-09-15 2012-11-15 Plasser Bahnbaumasch Franz MACHINE FOR REMOVING SCOTS OF A TRAIL
US9487921B2 (en) 2011-12-29 2016-11-08 Dymax, Inc. Undercutter self adjusting and shock absorbing device
ITGE20120055A1 (en) * 2012-05-30 2013-12-01 Enrico Valditerra "RAILWAY MASSIVE RAILWAY MACHINE WITH VARIABLE FRONT EXCAVATION CHAIN"
AT512163B1 (en) * 2012-06-12 2013-06-15 Plasser Bahnbaumasch Franz Machine with a clearing chain for the transport of gravel and procedures
AT518225B1 (en) 2016-01-29 2017-11-15 Plasser & Theurer Export Von Bahnbaumaschinen Gmbh Machine with a ballast cradle
CN108532382B (en) * 2018-05-27 2023-10-31 内蒙古工业大学 Small-size railway ballast cleaning machine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021180417A1 (en) 2020-03-11 2021-09-16 Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft M.B.H. Track construction machine having a conveying or excavating chain arrangement

Also Published As

Publication number Publication date
AU2727292A (en) 1993-04-29
US5271166A (en) 1993-12-21
CN1071722A (en) 1993-05-05
HU209629B (en) 1994-09-28
PL170271B1 (en) 1996-11-29
EP0538760A1 (en) 1993-04-28
DE59200324D1 (en) 1994-09-01
DK0538760T3 (en) 1994-11-28
SK279170B6 (en) 1998-07-08
AU653643B2 (en) 1994-10-06
JP2962946B2 (en) 1999-10-12
ATE109231T1 (en) 1994-08-15
HU9203319D0 (en) 1992-12-28
CZ320692A3 (en) 1993-06-16
RU2062312C1 (en) 1996-06-20
CZ278537B6 (en) 1994-02-16
HUT62349A (en) 1993-04-28
PL296317A1 (en) 1993-09-20
SK320692A3 (en) 1998-07-08
CN1041543C (en) 1999-01-06
CA2081087A1 (en) 1993-04-25
JPH05202503A (en) 1993-08-10

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