EP0240648B1 - Ballast cleaning machine with cribbing means - Google Patents

Ballast cleaning machine with cribbing means Download PDF

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Publication number
EP0240648B1
EP0240648B1 EP86890087A EP86890087A EP0240648B1 EP 0240648 B1 EP0240648 B1 EP 0240648B1 EP 86890087 A EP86890087 A EP 86890087A EP 86890087 A EP86890087 A EP 86890087A EP 0240648 B1 EP0240648 B1 EP 0240648B1
Authority
EP
European Patent Office
Prior art keywords
ballast
conveyor belt
machine
sieve
arrangement
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
EP86890087A
Other languages
German (de)
French (fr)
Other versions
EP0240648A1 (en
Inventor
Josef Ing. Theurer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Franz Plasser Bahnbaumaschinen Industrie GmbH
Original Assignee
Franz Plasser Bahnbaumaschinen Industrie 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 Franz Plasser Bahnbaumaschinen Industrie GmbH filed Critical Franz Plasser Bahnbaumaschinen Industrie GmbH
Priority to EP86890087A priority Critical patent/EP0240648B1/en
Priority to DE8686890087T priority patent/DE3660874D1/en
Priority to AT86890087T priority patent/ATE37732T1/en
Priority to AU66389/86A priority patent/AU583689B2/en
Priority to ES8603367A priority patent/ES2003974A6/en
Priority to PL1986263128A priority patent/PL154222B1/en
Priority to CN87100340.6A priority patent/CN1005201B/en
Priority to JP62012144A priority patent/JP2592819B2/en
Priority to US07/013,710 priority patent/US4813488A/en
Priority to CA000529892A priority patent/CA1287268C/en
Priority to HU87746A priority patent/HU198307B/en
Priority to SU874202141A priority patent/SU1512491A3/en
Priority to DD87301262A priority patent/DD256156A5/en
Priority to CS872296A priority patent/CS270221B2/en
Publication of EP0240648A1 publication Critical patent/EP0240648A1/en
Application granted granted Critical
Publication of EP0240648B1 publication Critical patent/EP0240648B1/en
Expired legal-status Critical Current

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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
    • E01B27/00—Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers
    • E01B27/06—Renewing or cleaning the ballast in situ, with or without concurrent work on the track
    • E01B27/10—Renewing or cleaning the ballast in situ, with or without concurrent work on the track without taking-up track

Definitions

  • the invention relates to a ballast bed cleaning machine for picking up, cleaning and reintroducing bulk material, in particular ballast ballast, with a conveyor or clearing chain arranged on a machine frame and a screening system which can be fed by a conveyor belt and has two screens arranged one behind the other in the machine longitudinal direction Screen units inclined horizontally and each with its own vibration drive, as well as with a conveyor belt arrangement for the reintroduction of the cleaned ballast and a spoil conveyor belt.
  • a ballast bed cleaning machine formed from two interconnected work vehicles for receiving, cleaning and reintroducing ballast ballast is known.
  • a screening plant which can be fed by a conveyor belt with two screening units provided one behind the other in the machine longitudinal direction and forming an inverted V is arranged on the following work vehicle.
  • the sieve units, each with their own vibration drive, are inclined to the horizontal plane in such a way that they are seen transversely to the machine longitudinal direction, forming a common ballast receiving area, roof-shaped and with their end faces adjoining one another.
  • a conveyor belt arrangement which extends from the screening plant in the direction of the ballast discharge point located immediately behind the conveyor or clearing chain and transports the cleaned ballast in the working direction of the machine.
  • a ballast store with a floor surface serving as a conveyor belt and with side Ausläs- - sen arranged for ballasting the sleeper head portion at the forward work vehicle.
  • the overburden accumulated during cleaning is transported forward in the working direction via a overburden conveyor belt running through the conveyor or clearing chain to the front of the machine.
  • Such a known ballast bed cleaning machine has a relatively high output due to the relatively large screening plant with two independent screening units, but is not always problem-free with regard to the amount of ballast to be introduced on the roof-shaped screen in terms of an equal quantity distribution.
  • ballast bed cleaning machine for receiving, cleaning and reintroducing ballast ballast is also known.
  • This ballast bed cleaning machine is composed of a work vehicle with a chassis at the end and a work vehicle that is articulated with its front end to the first work vehicle and has a chassis arranged at the rear end.
  • a height-adjustable, endless conveyor or clearing chain is arranged on this rear work vehicle, the transverse run of which is carried out under the track.
  • a screening system which can be fed by the conveyor or clearing chain via a conveyor belt is arranged at the rear end of the front work vehicle and consists of two screening units arranged one behind the other in the machine longitudinal direction, inclined to the horizontal plane and arranged on the same level.
  • the output-side end of the front and higher sieving unit overlaps the input-side end of the rear sieving unit, so that there is only a cross section for the exit of the cleaned ballast of both sieving units.
  • a conveyor belt arrangement is provided for the reintroduction of the cleaned ballast, the rear, discharge-side end of which is located in the area of the conveyor or clearing chain above a chute-like distribution device. This has an outlet opening which leads directly to the track or formation and a further outlet opening which leads to a distribution conveyor belt and is provided in the region of the raised track.
  • ballast With this distribution conveyor belt, which can be swiveled transversely around its front end, the remaining ballast is transported in the opposite direction to the working direction and is distributed to both sides of the track that has already been worked on immediately before the last carriage of the cleaning machine.
  • a distribution element in the form of a pivotable and controllable flap is mounted in the distribution device. Depending on the position of the flap, part of the cleaned ballast can be dropped onto the track directly behind the conveyor or clearing chain and part via the distribution conveyor belt. When the machine is at a standstill, the entire ballast is diverted onto the distribution conveyor belt.
  • a spoil conveyor belt leading from the screening plant to the front end of the machine is provided for the removal of the spoil.
  • ballast bed cleaning machine The sieving capacity and the associated work capacity of such a known ballast bed cleaning machine is only slightly greater than comparable cleaning machines with a single sieving unit, since the entire ballast to be cleaned flows through both overlapping sieving units.
  • a relatively complex control device is required in order to no longer pass on at least part of the ballast coming from the screen.
  • Another part of the ballast transported on the conveyor belts is in any case transported at uneven heights into the ballast gap.
  • ballast bed cleaning machine for picking up, cleaning and reintroducing ballast ballast with a clearing device located on an upstream work vehicle and a screening plant located on a downstream work vehicle.
  • This is very complex and has eight sieve units, which are arranged in pairs in the transverse direction of the machine opposite one another in a V-shape.
  • the individual pairs of sieve units are arranged one behind the other in the machine longitudinal direction and each have an insertion point at the machine longitudinal edge for receiving the ballast from a deflection device for transport conveyor belt having lateral ballast discharge.
  • a conveyor belt arrangement for transporting the cleaned ballast to a discharge chute immediately upstream of the screening system is provided below the ballast ejection points located in the center.
  • Such a screening plant is structurally particularly complex and also prone to malfunction, the screening path of the individual screening units being very short due to the specified machine width and also not permitting high performance.
  • ballast bed cleaning machine for picking up, cleaning and reintroducing ballast ballast.
  • the screening plant immediately downstream of the conveyor or clearing chain has closing devices in the area of their ballast ejection point, each with a closure flap which can be actuated independently of a cylinder-piston arrangement. In this way e.g. If the cleaning machine suddenly comes to a standstill, the screening system can be used as a storage tank by closing the flaps and closing the ballast ejection points, thus avoiding any undesired accumulation of ballast.
  • the object of the present invention is now to provide a track-traveling ballast bed cleaning machine of the type described at the outset, with which higher performance can be achieved with better adaptation to the given track and ballast conditions.
  • ballast bed cleaning machine described at the outset in that the two sieve units of the sieving system which can be loaded over the transport conveyor belt form two separate ballast throw-in points and a common ballast discharge point on the machine frame located between these throw-in points. seen transversely to the machine longitudinal direction, V-shaped are arranged inclined to each other.
  • ballast flow rate is low, especially when the ballast hits the sieves, and therefore a ballast accumulation in this initial area can lead to a disadvantageous reduction in the sieving effect and performance. Due to the independence of the screening units from each other, depending on the amount of ballast accumulated, these can be used together with full output or one screening unit with full output and the other with half output, or even with smaller amounts of ballast one screening unit cannot be put into operation at all.
  • a particularly advantageous embodiment of the invention is characterized in that between the preferably concave or channel-shaped transport conveyor belt and the screening plant, a conveyor conveyor belt is preferably assigned to each screening unit, preferably also channel-shaped, for inserting the ballast to be cleaned, with one each Drive for one conveying direction opposite to the conveying direction of the ballast in the assigned sieve unit.
  • endless conveyor conveyor belts arranged in this way for each sieving unit, the accumulating and ballast to be cleaned can be transported to the insertion point in a conveying direction opposite the conveying direction in the sieving units, irrespective of the transport direction of the conveyor belt conveying the ballast to the screening plant.
  • a preferred embodiment of the invention also consists in that the receiving end of each throw-in conveyor belt arranged above the respective sieving unit is arranged centrally between the two sieving units and above the two receiving ends the discharge end of the transport connected to the clearing or conveying chain. Conveyor belt is provided. With endless-throw-in conveyor belts arranged in this way, a shortened design of the transport conveyor belt and an equally long design or similar design of both throw-in conveyor belts is possible. This ensures that with the same length of transport of the ballast on both throw-in conveyor belts, the same delivery rate and impact of the ballast on the sieves can be achieved.
  • the invention is characterized thereby net that the transport conveyor belt is arranged up to both throw-in points of the two sieving units, with a deflection element for selectively dropping the ballast from the transport conveyor belt over the throw-in point of the one sieve unit closer to the conveyor or clearing chain and the dropping end of the Transport conveyor belt is arranged.
  • the deflecting elements can be used to deflect contaminated ballast, if required or optionally, from the transport conveyor belt onto the first sieving unit, in order to relieve the second sieving unit in the event of greater ballast accumulation. This means that both screening units can be fed directly and independently from the conveyor belt.
  • a temporary store is provided for the temporary storage of, in particular, excess ballast, which is arranged in the ballast flow between the screening plant and the discharge point of the further ballast transport arrangement.
  • a preferred embodiment of the invention consists in the fact that the intermediate storage as part of the conveyor belt arrangement for the further transport of the cleaned ballast is designed with a storage conveyor belt with storage side walls serving as a bottom surface and having its own drive.
  • an advantageous ballast storage can be carried out without retrofitting or adjustment work solely by the standstill of the storage conveyor belt serving as the floor area.
  • the invention is characterized in that at least one of the two sieve units which can be fed independently of one another is designed as an intermediate store with a control flap which is arranged in the region of the ballast ejection star and closes it.
  • this sieve unit which can be closed with a control flap, it can itself be used in the simplest way as an intermediate store for the ballast. It is particularly advantageous that by arranging two sieve units that can be used independently of one another, one sieve unit, e.g. can be used at full capacity, while the other sieving unit stores ballast and only passes it on when there is too little ballast.
  • the vibration drives preferably both sieve units and the drive of the conveyor or clearing chain
  • the vibration drives can be connected to a control device which, when the drive for the conveyor or clearing chain is at a standstill, automatically reduces the oscillation frequency of one of the Both vibration drives are designed for a lower vibration frequency - the ballast no longer moving on the sieves.
  • This ensures that the ballast is stored in one of the two sieving units immediately when the machine's right of way is interrupted and the conveyor or clearing chain is stopped.
  • This storage is achieved in that the ballast on the sieves is not set in motion as a result of the lowering of the oscillation frequency of the vibration drive.
  • the conveyor belt arrangement for the further transport of the cleaned ballast is formed from two collecting conveyor belts, which are preferably channel-shaped and run parallel to one another in the machine longitudinal direction Throwing ends are preferably arranged above the intermediate store, the overburden conveyor belt, which is preferably also channel-shaped, is provided between the two collecting conveyor belts.
  • the conveyor belt arrangement has at least one further conveyor belt arranged on the machine frame and extending to the rear machine end or with its discharge end extending above the machine end, preferably in the form of a groove - for an optional discharge of the cleaned ballast as second layer application in the intermediate sleeper compartments and / or an equally preferably channel-shaped removal conveyor belt for a further transportation of the excess ballast, for example up to a bulk material loading train.
  • the extension of the conveyor belt arrangement to the rear end of the machine for the sleeper compartment ballast and / or for the removal of excess ballast enables a particularly efficient and immediate adaptation to the given ballast conditions.
  • a ballast bed cleaning machine 1 shown in FIGS. 1 and 2 with a machine frame 2 can be moved continuously via rail trolleys 3 on a track 6 formed from sleepers 4 and rails 5 in the working direction represented by an arrow 7.
  • the machine frame 2 with the cabs 8 arranged at the ends consists of a front frame part 9 and a rear frame part 11 connected to it by a joint 10. Above the joint 10, both frame parts 9, 11 are connected to one another by an expansion cylinder-piston arrangement 12 .
  • An energy supply center 14 is provided to supply the working units and a travel drive 13.
  • On the rear frame part 11 there is an endlessly configured conveyor or clearing chain 16 with a transverse strand 15, which is guided under the track 6 and is adjustable in height and in a lateral direction with a drive 17.
  • an endless additional chain 18 which is rotatable in a vertical plane is connected to the conveying or clearing chain 16 in the region of a longitudinal chain guide track.
  • a screening plant 21 formed from two screening units 19, 20 arranged one behind the other in the machine longitudinal direction.
  • the two screening units 19, 20 of the screening system 21 which can be fed via a transport conveyor belt 22 are arranged in a V-shape inclined to one another, forming a common ballast ejection point 23 and two ballast insertion points 24, 25 separated from one another, transverse to the machine longitudinal direction.
  • a throw-in conveyor belt 26 assigned to each screen unit 19, 20 for the throw-in of the ballast to be cleaned.
  • a conveyor belt arrangement 27 which brings the cleaned ballast back into the track bed is provided, which has a first ballast discharge point 28 both in the region of the exposed formation and a second ballast discharge point 28 at the rear machine end , 29 has.
  • a buffer store 30 is provided - located in the ballast flow between the screening plant 21 and the discharge point 28. This is designed as part of the conveyor belt arrangement 27 for the further transport of the cleaned ballast with a storage conveyor belt 31 serving as a bottom surface and having its own drive.
  • a distribution chute 32 with three outlet openings is attached to the machine frame 2 to form the first discharge point 28, one of which is provided centrally between the rails 5 and one outlet opening above the sleeper head area.
  • the distribution conveyor belt 33 of the conveyor belt arrangement 27 adjoining the intermediate store 30 has a deflection member in the region of the end on the receiving side. The end on the discharge side opens into a distribution chute 34 forming the second discharge point 29 for the bulkheading of the sleeper compartments.
  • a removal conveyor belt 35 which is mounted so as to be able to be moved onward for optional further transport of the cleaned and excess ballast, for example up to a subsequent bulk material loading train in the machine longitudinal direction.
  • the conveyor belt arrangement 27 for the further transport of the cleaned ballast is formed from two collecting conveyor belts 36 running parallel to one another in the machine longitudinal direction.
  • a spoil conveyor 37 leading to the front end of the machine is provided between the two collecting conveyor belts 36.
  • each sieve unit 19, 20 has two sieves 28 inclined to the horizontal plane and its own vibration drive 39. This is formed in each case from unbalance exciters which can be set in rotation and which sets the entire sieve unit 19 or 20 mounted on springs 40 in linear vibrations.
  • the springs 40 are in turn supported on a support frame 41 which is mounted on the machine frame 2 so as to be pivotable about a central axis running in the longitudinal direction of the machine and is connected to adjusting cylinders 42. With these, the entire screen unit can be pivoted during the cleaning work in track sections with a cross slope, so that despite the cross slope, the screens 38 are in a horizontal position for undisturbed cleaning of the ballast.
  • the vibration drives 39 of both screening units 19, 20 and the drive 17 of the conveyor or clearing chain 16 are connected to a central control device 43. This is at a standstill of the drive 17, which sets the conveyor or clearing chain 16 in rotation, for automatically lowering the oscillation frequency of the vibra tion drives 39 of both sieve units 19, 20 formed on a ballast on the sieves 38 no longer moving low vibration frequency.
  • the infeed conveyor belts 26 are each connected to a separate drive 44 for a conveying direction opposite to the conveying direction of the ballast in the associated sieving unit 19 or 20 and indicated by a small arrow (FIG. 3).
  • the end of each intake conveyor belt 26 arranged above the respective sieving unit 19, 20 is arranged centrally between the two sieving units 19, 20. Above the two receiving ends of the throw-in conveyor belts 26, the discharge end 45 of the transport conveyor belt 22, which is connected to the clearing or conveyor chain 16 and has a drive 46, is provided.
  • a transport conveyor belt 52 arranged above two separate ballast insertion points 50, 51 cleaning gravel can be loaded.
  • flag-like deflection members 53 which can be pivoted about a vertical axis, are provided for selectively throwing the ballast into the infeed point 51 and / or via the ejecting end 54 into the infeed point 50.
  • the entire ballast transported on the conveyor belt 52 is thrown into the sieving unit 47 via the discharge end 54.
  • the common ballast discharge point is formed at the lower end of the two sieving units 47, 48.
  • FIG. 5 shows a screening system 55 of a ballast bed cleaning machine with two screen units 56, 57, which are formed independently of one another, arranged in a V-shape with respect to one another and each provided with a ballast insertion point, and has on their underside a conveyor belt arrangement 59 which transports the cleaned ballast 58 and a waste conveyor belt 60 on.
  • a common ballast ejection point 61 is formed by both screening units 56, 57.
  • a flap 62 which closes the ballast outlet openings is provided on each sieve unit 56, 57.
  • This is pivotably mounted about an axis running transversely to the longitudinal direction of the screen and can be pivoted by a pivoting drive 63 from a position closing the outlet openings into a position in which the openings are opened.
  • a sieve unit if necessary both, can be used as temporary storage 64 by closing the ballast outlet openings.
  • the flap 62 can be opened and the ballast stored in the sieving unit can be thrown onto the conveyor belt arrangement 59 for reintroduction.
  • the method of operation of the ballast bed cleaning machine with screening plant shown in FIGS. 1 to 3 is as follows: as soon as contaminated ballast is taken up from the track bed through the conveyor or clearing chain 16 of the ballast bed cleaning machine 1 passed under the track 6, with continuous work priority the latter onto the transport conveyor belt 22. From this, the ballast is transported in the working direction to the front frame part 9 and dropped onto the two throw-in conveyor belts 26 in the center above the screening plant 21. From this, the ballast finally arrives in the assigned sieve unit 19 or 20, the ballast being thrown off in the sieve unit in the opposite direction to the direction of flow. In this way, a particularly high, possibly still encrusted ballast loosening and reinforcing the sieving effect can be achieved.
  • the gravel is shaken by the independent vibratory drives 39 into linear vibrations and inclined to the horizontal plane, separating the spoil, in the direction of the lower, common ballast ejection point 23 and onto the two distribution conveyor belts 36 underneath thrown off.
  • the overburden is transported by the overburden conveyor belt 37 running in the middle of the machine to the front end of the machine and is thrown there onto loaded wagons or onto the track embankment.
  • the cleaned ballast is dropped into the intermediate storage 30 via the two collecting conveyor belts 36 and transported further from the storage conveyor belt 31 to the distribution chute 32. Through this, the ballast is thrown in turn in a first application of the layer onto the exposed subgrade to the lower threshold level.
  • ballast is deposited in a second position in the sleeper compartments for complete ballast of the track after the ballast bed cleaning machine 1 dropped.
  • the removal conveyor belt 35 is shifted longitudinally in the direction of the storage conveyor belt 31, so that part of the ballast thrown by it falls onto the receiving end of the removal conveyor belt 35. The excess ballast is dropped from this onto a subsequent ballast transport loading train.
  • the storage conveyor belt 31 In the event of a sudden interruption of the work approach of the ballast bed cleaning machine 1, the storage conveyor belt 31 is stopped, so that the ballast still ejected by the vibrating sieves is collected in the intermediate storage 30 and an undesired accumulation of ballast in the region of the two distribution chutes 32 and 34 is avoided. As soon as which starts the machine 1 moving forward, the storage conveyor belt 31 can, if appropriate, be put into operation again at an initially lower rotational speed. If, for example, there is less ballast with a low ballast bed height, the rotational speed of the conveyor belt 22 is increased by applying more force to the hydraulic drive 46.
  • the discharge parabola is changed in such a way that the entire ballast transported on the conveyor belt 22 is dropped onto the front throw-in conveyor belt 26 in the working direction.
  • the rear sieve unit 20 and the associated throw-in conveyor belt 26 can be taken out of operation in order to save energy. If the rotational speed of the conveyor belt 22 is not increased so much, different variants are possible. For example, the larger proportion of ballast can be thrown onto the front and the remaining part onto the rear throw-in conveyor belt 26.
  • the oscillation frequency of the rear sieve unit 20 is also expediently reduced.
  • All conveyor belts are formed as endless belts made of fabric-reinforced rubber, avoiding malfunctions to achieve high transport performance, which are guided in a cross-sectionally channel-shaped or concavely curved bed made of rollers that can be rotated transversely to the transport direction. This ensures that even with particularly long transport routes, no ballast or overburden falls sideways from the conveyor belt onto machine parts or work units.

Abstract

A ballast cleaning machine for excavating ballast supporting a track and for cleaning the excavated ballast, comprises a ballast screening installation mounted on the machine frame and arranged to receive the excavated ballast from the discharge end of a ballast excavating and conveying chain, and to clean the received ballast by separating waste therefrom, the screening installation comprising two screening units each of which comprises a set of a plurality of superposed screens extending obliquely with respect to the track in the direction of elongation of the machine, the sets of screens being arranged sequentially in, and symmetrically with respect to a vertical plane extending transversely to, this direction, and the obliquely extending screens ascending from a centrally located common outlet of the two sets of screens to two separate inlets for the excavated ballast, and independent vibrators for each set of screens for conveying the cleaned ballast on the screens in respective conveying directions from a respective one of the inlets to the common outlet.

Description

Die Erfindung betrifft eine Schotterbett-Reinigungsmaschine zur Aufnahme, Reinigung und zum Wiedereinbringen von Schüttgut, insbesondere Bettungsschotter, mit einer auf einem Maschinenrahmen angeordneten Förder- bzw. Räumkette und einer von dieser über ein Transport-Förderband beschickbaren Siebanlage mit zwei in Maschinenlängsrichtung hintereinander angeordneten, zur Horizontalebene geneigten und jeweils einen eigenen Vibrationsantrieb aufweisenden Siebeinheiten, sowie mit einer Förderband-Anordnung für die Wiedereinbringung des gereinigten Schotters und einem Abraum-Förderband.The invention relates to a ballast bed cleaning machine for picking up, cleaning and reintroducing bulk material, in particular ballast ballast, with a conveyor or clearing chain arranged on a machine frame and a screening system which can be fed by a conveyor belt and has two screens arranged one behind the other in the machine longitudinal direction Screen units inclined horizontally and each with its own vibration drive, as well as with a conveyor belt arrangement for the reintroduction of the cleaned ballast and a spoil conveyor belt.

Es ist - gemäss DE-A-34 24 687 der gleichen Anmelderin - eine aus zwei miteinander verbundenen Arbeitsfahrzeugen gebildete Schotterbett-Reinigungsmaschine zur Aufnahme, Reinigung und zum Wiedereinbringen von Bettungsschotter bekannt. An einem Maschinenrahmen des in Arbeitsrichtung vorderen Arbeitsfahrzeuges ist eine höhen- und seitenverstellbare, mit ihrem Quertrum unter das Gleis geführte Förder- bzw. Räumkette angeordnet. Eine von dieser über ein Transport-Förderband beschickbare Siebanlage mit zwei in Maschinenlängsrichtung hintereinander vorgesehenen und ein umgekehrtes V bildenden Siebeinheiten ist auf dem nachfolgenden Arbeitsfahrzeug angeordnet. Die jeweils einen eigenen Vibrationsantrieb aufweisenden Siebeinheiten sind derart zur Horizontalebene geneigt, dass sie quer zur Maschinenlängsrichtung gesehen, unter Bildung eines gemeinsamen Schotter-Aufnahmebereiches, dachförmig und mit ihren Stirnseiten aneinandergrenzend angeordnet sind. Zur Wiedereinbringung des gereinigten Schotters ist eine sich von der Siebanlage in Richtung zu der unmittelbar hinter der Förder- bzw. Räumkette befindlichen Schotter-Abwurfstelle erstreckende, den gereinigten Schotter in Arbeitsrichtung der Maschine transportierende Förderband-Anordnung vorgesehen. Als Teil dieser Förderband-Anordnung ist ein Schotter-Speicher mit einem als Bodenfläche dienenden Förderband und mit seitlichen Ausläs- -sen zur Einschotterung des Schwellenkopfbereiches am vorderen Arbeitsfahrzeug angeordnet. Der bei der Reinigung anfallende Abraum wird über ein durch die Förder- bzw. Räumkette zum vorderen Maschinenende verlaufendes Abraum-Förderband in Arbeitsrichtung nach vorne abtransportiert. Eine derartige bekannte Schotterbett-Reinigungsmaschine weist durch die relativ grosse Siebanlage mit zwei voneinander unabhängigen Siebeinheiten eine relativ hohe Leistung auf, ist aber hinsichtlich der Menge des einzubringenden Schotters auf dem dachförmigen Sieb hinsichtlich einer gleichen Mengenaufteilung nicht immer problemlos.According to DE-A-34 24 687 by the same applicant, a ballast bed cleaning machine formed from two interconnected work vehicles for receiving, cleaning and reintroducing ballast ballast is known. On a machine frame of the front working vehicle in the working direction there is a height and side adjustable conveyor chain with its transverse run under the track. A screening plant which can be fed by a conveyor belt with two screening units provided one behind the other in the machine longitudinal direction and forming an inverted V is arranged on the following work vehicle. The sieve units, each with their own vibration drive, are inclined to the horizontal plane in such a way that they are seen transversely to the machine longitudinal direction, forming a common ballast receiving area, roof-shaped and with their end faces adjoining one another. To reintroduce the cleaned ballast, a conveyor belt arrangement is provided which extends from the screening plant in the direction of the ballast discharge point located immediately behind the conveyor or clearing chain and transports the cleaned ballast in the working direction of the machine. As part of this conveyor belt arrangement is a ballast store with a floor surface serving as a conveyor belt and with side Ausläs- - sen arranged for ballasting the sleeper head portion at the forward work vehicle. The overburden accumulated during cleaning is transported forward in the working direction via a overburden conveyor belt running through the conveyor or clearing chain to the front of the machine. Such a known ballast bed cleaning machine has a relatively high output due to the relatively large screening plant with two independent screening units, but is not always problem-free with regard to the amount of ballast to be introduced on the roof-shaped screen in terms of an equal quantity distribution.

Es ist-gemäss CH-A-651 870-auch eine Schotterbett-Reinigungsmaschine zur Aufnahme, Reinigung und zum Wiedereinbringen von Bettungsschotter bekannt. Diese Schotterbett-Reinigungsmaschine setztsich aus einem endseitig jeweils ein Fahrwerk aufweisenden, in Arbeitsrichtung vorderen Arbeitsfahrzeug und einem mit seinem vorderen Ende an das erste Arbeitsfahrzeug angelenkten und abgestützten Arbeitsfahrzeug mit einemam hinteren Ende angeordneten Fahrwerkzusammen. An diesem hinteren Arbeitsfahrzeug ist eine höhenverstellbare, endlose Förder- bzw. Räumkette angeordnet, deren Quertrum unter das Gleis durchgeführt ist. Eine von der Förder- bzw. Räumkette über ein Transport-Förderband beschickbare Siebanlage ist am hinteren Ende des vorderen Arbeitsfahrzeuges angeordnet und besteht aus zwei in Maschinenlängsrichtung hintereinander angeordneten, zur Horizontalebene geneigten und in einer gleichen Ebene angeordneten Siebeinheiten. Dabei überlappt das ausgangsseitige Ende der vorderen und höher gelegenen Siebeinheit das eingangsseitige Ende der hinteren Siebeinheit, so dass nur ein Querschnitt für den Ausgang des gereinigten Schotters beider Siebeinheiten vorhanden ist. Für die Wiedereinbringung des gereinigten Schotters ist eine Förderband-Anordnung vorgesehen, deren hinteres, abwurfseitiges Ende sich im Bereich der Förder- bzw. Räumkette über einer schurrenartigen Verteilvorrichtung befindet. Diese weist eine direkt zum Gleis bzw. Planum und eine weitere, zu einem Verteilförderband führende, im Bereich des angehobenen Gleises vorgesehene Auslassöffnung auf. Mit diesem um sein vorderes Ende in Querrichtung verschwenkbaren Verteilförderband wird übriger Schotter entgegengesetzt zur Arbeitsrichtung transportiert und unmittelbar vor dem letzten Fahrwerk der Reinigungsmaschine zu beiden Seiten des bereits bearbeiteten Gleises verteilt. In der Verteilvorrichtung ist ein Verteilorgan in Form einer schwenk- und steuerbaren Klappe gelagert. Damit kann je nach der Stellung der Klappe ein Teil des gereinigten Schotters unmittelbar hinter der Förder- bzw. Räumkette und ein Teil über das Verteilförderband auf das Gleis abgeworfen werden. Bei Stillstand der Maschine wird der gesamte anfallende Schotter auf das Verteilförderband umgelenkt. Für den Abtransport des Abraumes ist ein von der Siebanlage zum vorderen Maschinenende führendes Abraum-Förderband vorgesehen. Die Siebleistung und damit verbunden auch die Arbeitsleistung einer derartigen bekannten Schotterbett-Reinigungsmaschine ist nur geringfügig grösser als vergleichbare Reinigungsmaschinen mit einer einzigen Siebeinheit, da der gesamte zu reinigende Schotter durch beide überlappend angeordnete Siebeinheiten fliesst. Ausserdem ist bei Stillstand der Aushubkette eine relativ aufwendige Steuervorrichtung erforderlich, um wenigstens einen Teil des vom Sieb kommenden Schotters nicht mehr weiterzuleiten. Ein weiterer Teil des auf den Förderbändern transportierten Schotters wird auf jeden Fall in die Schotterlücke ungleich hoch hineintransportiert.According to CH-A-651 870, a ballast bed cleaning machine for receiving, cleaning and reintroducing ballast ballast is also known. This ballast bed cleaning machine is composed of a work vehicle with a chassis at the end and a work vehicle that is articulated with its front end to the first work vehicle and has a chassis arranged at the rear end. A height-adjustable, endless conveyor or clearing chain is arranged on this rear work vehicle, the transverse run of which is carried out under the track. A screening system which can be fed by the conveyor or clearing chain via a conveyor belt is arranged at the rear end of the front work vehicle and consists of two screening units arranged one behind the other in the machine longitudinal direction, inclined to the horizontal plane and arranged on the same level. The output-side end of the front and higher sieving unit overlaps the input-side end of the rear sieving unit, so that there is only a cross section for the exit of the cleaned ballast of both sieving units. A conveyor belt arrangement is provided for the reintroduction of the cleaned ballast, the rear, discharge-side end of which is located in the area of the conveyor or clearing chain above a chute-like distribution device. This has an outlet opening which leads directly to the track or formation and a further outlet opening which leads to a distribution conveyor belt and is provided in the region of the raised track. With this distribution conveyor belt, which can be swiveled transversely around its front end, the remaining ballast is transported in the opposite direction to the working direction and is distributed to both sides of the track that has already been worked on immediately before the last carriage of the cleaning machine. A distribution element in the form of a pivotable and controllable flap is mounted in the distribution device. Depending on the position of the flap, part of the cleaned ballast can be dropped onto the track directly behind the conveyor or clearing chain and part via the distribution conveyor belt. When the machine is at a standstill, the entire ballast is diverted onto the distribution conveyor belt. A spoil conveyor belt leading from the screening plant to the front end of the machine is provided for the removal of the spoil. The sieving capacity and the associated work capacity of such a known ballast bed cleaning machine is only slightly greater than comparable cleaning machines with a single sieving unit, since the entire ballast to be cleaned flows through both overlapping sieving units. In addition, when the excavation chain is at a standstill, a relatively complex control device is required in order to no longer pass on at least part of the ballast coming from the screen. Another part of the ballast transported on the conveyor belts is in any case transported at uneven heights into the ballast gap.

Es ist weiters - gemäss D E-A-24 56 027 - eine Schotterbett-Reinigungsmaschine zur Aufnahme, Reinigung und zum Wiedereinbringen von Bettungsschotter mit einer auf einem vorgeordneten Arbeitsfahrzeug befindlichen Räumvorrichtung und einer auf einem nachgeordneten Arbeitsfahrzeug befindlichen Siebanlage bekannt. Diese ist sehr aufwendig und weist acht Siebeinheiten auf, die paarweise in Querrichtung der Maschine einander V-förmig gegenüberliegend angeordnet sind. Die einzelnen Siebeinheiten-Paare sind in Maschinenlängsrichtung hintereinander angeordnet und weisen jeweils etwa am Maschinenlängsrand eine Einwurfstelle zur Aufnahme des Schotters von einem Umlenkeinrichtungen zum seitlichen Schotterabwurf aufweisenden Transport-Förderband auf. Unterhalb der mittig gelegenen Schotter-Auswurfstellen ist eine Förderband-Anordnung zum Transport des gereinigten Schotters zu einer der Siebanlage unmittelbar vorgeordneten Abwurfschurre vorgesehen. Eine derartige Siebanlage ist konstruktiv besonders aufwendig und auch störungsanfällig, wobei der Siebweg der einzelnen Siebeinheiten auf Grund dervorgegebenen Maschinenbreite sehr kurz ausgebildet ist und auch keine hohe Leistung zulässt.It is also - according to D EA-24 56 027 - a ballast bed cleaning machine for picking up, cleaning and reintroducing ballast ballast with a clearing device located on an upstream work vehicle and a screening plant located on a downstream work vehicle. This is very complex and has eight sieve units, which are arranged in pairs in the transverse direction of the machine opposite one another in a V-shape. The individual pairs of sieve units are arranged one behind the other in the machine longitudinal direction and each have an insertion point at the machine longitudinal edge for receiving the ballast from a deflection device for transport conveyor belt having lateral ballast discharge. A conveyor belt arrangement for transporting the cleaned ballast to a discharge chute immediately upstream of the screening system is provided below the ballast ejection points located in the center. Such a screening plant is structurally particularly complex and also prone to malfunction, the screening path of the individual screening units being very short due to the specified machine width and also not permitting high performance.

Schliesslich ist noch - gemäss AT-A-353 821 - eine andere Schotterbett-Reinigungsmaschine zur Aufnahme, Reinigung und zum Wiedereinbringen von Bettungsschotter bekannt. Die der Förder- bzw. Räumkette unmittelbar nachgeordnete Siebanlage weist im Bereich ihrer Schotter-Auswurfstelle Verschliessvorrichtungen mit je einer unabhängig von einer Zylinder-Kolben-Anordnung betätigbaren Verschlussklappe auf. Auf diese Weise ist z.B. bei plötzlichem Stillstand der Reinigungsmaschine die Siebanlage als Speicher verwendbar, indem die Verschlussklappen die Schotter-Auswurfstellen verschliessen und damit jedwede unerwünschte Schotteranhäufung vermieden wird.Finally - according to AT-A-353 821 - another ballast bed cleaning machine for picking up, cleaning and reintroducing ballast ballast is known. The screening plant immediately downstream of the conveyor or clearing chain has closing devices in the area of their ballast ejection point, each with a closure flap which can be actuated independently of a cylinder-piston arrangement. In this way e.g. If the cleaning machine suddenly comes to a standstill, the screening system can be used as a storage tank by closing the flaps and closing the ballast ejection points, thus avoiding any undesired accumulation of ballast.

Die Aufgabe der vorliegenden Erfindung besteht nun in der Schaffung einer gleisverfahrbaren Schotterbett-Reinigungsmaschine der eingangs beschriebenen Art, mit welcher unter gleichzeitiger besserer Anpassung an die gegebenen Gleis-und Schotterverhältnisse eine höhere Leistung erzielbar ist.The object of the present invention is now to provide a track-traveling ballast bed cleaning machine of the type described at the outset, with which higher performance can be achieved with better adaptation to the given track and ballast conditions.

Die Aufgabe der Erfindung wird nun mit der eingangs beschriebenen Schotterbett-Reinigungsmaschine dadurch gelöst, dass die beiden über dem Transport-Förderband beschickbaren Siebeinheiten der Siebanlage unter Bildung zweier voneinander getrennter Schotter-Einwurfstellen und einer gemeinsamen, zwischen diesen Einwurfstellen gelegenen Schotter-Auswurfstelle am Maschinenrahmen, quer zur Maschinenlängsrichtung gesehen, V-förmig zueinander geneigt angeordnet sind.The object of the invention is now achieved with the ballast bed cleaning machine described at the outset in that the two sieve units of the sieving system which can be loaded over the transport conveyor belt form two separate ballast throw-in points and a common ballast discharge point on the machine frame located between these throw-in points. seen transversely to the machine longitudinal direction, V-shaped are arranged inclined to each other.

Durch die V-förmige Anordnung der Siebeinheiten ist - bei Unabhängigkeit der einzelnen Siebeinheiten voneinander - eine gemeinsame Schotter-Auswurfstelle mit praktisch doppeltem Querschnittsauswurf erreichbar, wodurch weiters die Förderband-Anordnung für den Abtransport des gereinigten Schotters nicht unter der gesamten Siebanlage, sondern nur bis zu deren etwa halber Länge anzuordnen ist. Andererseits ist mit der Ausbildung zweier räumlich voneinander distanzierter Schotter-Einwurfstellen jedwede Möglichkeit eines Schotterstaus durch zu grosse Schottermengen zuverlässig ausgeschlossen, da die von der Förder- bzw. Räumkette anfallenden Schottermengen bereits vor dem Abwurf auf die Siebeinheiten im wesentlichen halbiert bzw. geteilt sind. Dies ist auch deshalb von Vorteil, da die Schotterfliessgeschwindigkeit gerade beim Auftreffen des Schotters auf die Siebe niedrig ist und daher gerade in diesem Anfangsbereich ein Schotterstau zu einer nachteiligen Reduzierung der Siebwirkung und -leistung führen kann. Durch die Unabhängigkeit der Siebeinheiten voneinander können weiters diese je nach anfallender Schottermenge gemeinsam mit voller Leistung bzw. eine Siebeinheit mit voller und die andere mit halber Leistung eingesetzt werden, oder es kann auch bei geringeren Schottermengen eine Siebeinheit überhaupt nicht in Betrieb genommen werden.Due to the V-shaped arrangement of the sieve units - if the individual sieve units are independent of each other - a common ballast discharge point with practically double cross-section discharge can be reached, which means that the conveyor belt arrangement for the removal of the cleaned ballast is not under the entire sieve system, but only up to whose approximately half length is to be arranged. On the other hand, with the formation of two spatially spaced-apart ballast throw-in points, any possibility of ballast accumulation due to excessive amounts of ballast is reliably ruled out, since the amount of ballast accumulated by the conveyor or clearing chain is essentially halved or divided before being dropped onto the sieving units. This is also advantageous because the ballast flow rate is low, especially when the ballast hits the sieves, and therefore a ballast accumulation in this initial area can lead to a disadvantageous reduction in the sieving effect and performance. Due to the independence of the screening units from each other, depending on the amount of ballast accumulated, these can be used together with full output or one screening unit with full output and the other with half output, or even with smaller amounts of ballast one screening unit cannot be put into operation at all.

Eine besonders vorteilhafte Ausführungsform der Erfindung ist dadurch gekennzeichnet, dass zwischen dem vorzugsweise konkav bzw. rinnenförmig ausgebildeten Transport-Förderband und der Siebanlage jeweils ein jeder Siebeinheit zugeordnetes, vorzugsweise auch rinnenförmig ausgebildetes Einwurf-Förderband zum Einwurf des zu reinigenden Schotters vorgesehen ist, mit je einem Antrieb für jeweils eine im Vergleich zur Förderrichtung des Schotters in der zugeordneten Siebeinheit entgegengesetzte Förderrichtung. Mit derartig angeordneten Endlos-Einwurf-Förderbändern für jede Siebeinheit kann der anfallende und zu reinigende Schotter unabhängig von der Transportrichtung des den Schotter bis zur Siebanlage fördernden Transport-Förderbandes jeweils in einerzur Förderrichtung in den Siebeinheiten entgegengesetzten Förderrichtung zur Einwurfstelle transportiert werden. Auf diese Weise ist eine besonders hohe Prallwirkung des Schotters beim Auftreffen auf das Sieb erzielbar, wodurch bereits grössere Schotterklumpen zerkleinert bzw. noch verkrusteter Schotter rascher gelöst bzw. ein grosser Anteil des Abraumes gleich zu Beginn durch das Sieb geschleudert wird. Mit dieser relativ einfachen Massnahme ist daher eine zusätzliche Erhöhung der Siebleistung erzielbar.A particularly advantageous embodiment of the invention is characterized in that between the preferably concave or channel-shaped transport conveyor belt and the screening plant, a conveyor conveyor belt is preferably assigned to each screening unit, preferably also channel-shaped, for inserting the ballast to be cleaned, with one each Drive for one conveying direction opposite to the conveying direction of the ballast in the assigned sieve unit. With endless conveyor conveyor belts arranged in this way for each sieving unit, the accumulating and ballast to be cleaned can be transported to the insertion point in a conveying direction opposite the conveying direction in the sieving units, irrespective of the transport direction of the conveyor belt conveying the ballast to the screening plant. In this way, a particularly high impact effect of the ballast when it hits the sieve can be achieved, as a result of which even larger lumps of ballast are crushed or more crusty ballast is loosened more quickly or a large proportion of the spoil is thrown through the sieve right at the start. With this relatively simple measure, an additional increase in the sieving capacity can therefore be achieved.

Eine bevorzugte Ausführungsform der Erfindung besteht auch darin, dass das aufnahmeseitige Ende eines jeden oberhalb der jeweiligen Siebeinheit angeordneten Einwurf-Förderbandes mittig zwischen den beiden Siebeinheiten angeordnet und über den beiden aufnahmeseitigen Enden das Abwurfende des mit der Räum- bzw. Förderkette in Verbindung stehenden Transport-Förderbandes vorgesehen ist. Mit auf diese Art angeordneten Endlos-Einwurf-Förderbändern ist eine verkürzte Ausbildung des Transport-Förderbandes sowie eine gleich lange Ausbildung bzw. gleichartige Ausbildung beider Einwurf-Förderbänder möglich. Damit ist sichergestellt, dass mit dem gleich langen Transportweg des Schotters auf beiden Einwurf-Förderbändern auch die gleiche Förderleistung und Prallwirkung des Schotters auf die Siebe erzielbar ist.A preferred embodiment of the invention also consists in that the receiving end of each throw-in conveyor belt arranged above the respective sieving unit is arranged centrally between the two sieving units and above the two receiving ends the discharge end of the transport connected to the clearing or conveying chain. Conveyor belt is provided. With endless-throw-in conveyor belts arranged in this way, a shortened design of the transport conveyor belt and an equally long design or similar design of both throw-in conveyor belts is possible. This ensures that with the same length of transport of the ballast on both throw-in conveyor belts, the same delivery rate and impact of the ballast on the sieves can be achieved.

Die Erfindung ist gemäss einer weiteren vorteilhaften Ausführungsform dadurch gekennzeichnet, dass das Transport-Förderband bis über beide Einwurfstellen der beiden Siebeinheiten angeordnet ist, wobei über der der Förder- bzw. Räumkette näheren Einwurfstelle der einen Siebeinheit ein Umlenkorgan zum wahlweisen Abwurf des Schotters vom Transport-Förderband und über der anderen Einwurfstelle das Abwurfende des Transport-Förderbandes angeordnet ist. Durch die Umlenkorgane kann bedarfs- bzw. wahlweise verunreinigter Schotter vom Transport-Förderband auf die erste Siebeinheit umgelenkt werden, um damit die zweite Siebeinheit bei grösserem Schotteranfall zu entlasten. Damit sind beide Siebeinheiten in einfacher Weise vom Transport-Förderband direkt und unabhängig beschickbar.According to a further advantageous embodiment, the invention is characterized thereby net that the transport conveyor belt is arranged up to both throw-in points of the two sieving units, with a deflection element for selectively dropping the ballast from the transport conveyor belt over the throw-in point of the one sieve unit closer to the conveyor or clearing chain and the dropping end of the Transport conveyor belt is arranged. The deflecting elements can be used to deflect contaminated ballast, if required or optionally, from the transport conveyor belt onto the first sieving unit, in order to relieve the second sieving unit in the event of greater ballast accumulation. This means that both screening units can be fed directly and independently from the conveyor belt.

Nach einem weiteren zweckmässigen Merkmal der Erfindung ist zur Zwischenspeicherung von insbesondere überschüssigem Schotter ein - im Schotterfluss zwischen der Siebanlage und der Abwurfstelle der Schotter-Weitertransport-Anordnung angeordneter - Zwischenspeicher vorgesehen. Mit der Anordnung eines Zwischenspeichers in der den gereinigten Schotter abtransportierenden Transport-Anordnung ist mit lediglich geringem Mehraufwand ein wirksamer Materialpuffer für eine von der tatsächlichen und oft schwankenden Schottermengenabgabe der Siebeinheiten unabhängige, gleichmässige Wiedereinbringung des gereinigten Schotters geschaffen. Zusätzlich ist mit diesem Zwischenspeicher auch der bei plötzlicher Unterbrechung der Arbeitsvorfahrtder Maschine noch von den Siebeinheiten anfallende Schotter speicherbar, ohne dass Schotter für die Wiedereinbringung in unnützer Weise weitertransportiert wird. Dadurch ist jede unerwünschte Schotteranhäufung im bereits bearbeiteten Gleisbereich zuverlässig ausgeschlossen.According to a further expedient feature of the invention, a temporary store is provided for the temporary storage of, in particular, excess ballast, which is arranged in the ballast flow between the screening plant and the discharge point of the further ballast transport arrangement. With the arrangement of a buffer in the transport arrangement that transports the cleaned ballast, an effective material buffer is created with only little additional effort for an even and uniform reintroduction of the cleaned ballast that is independent of the actual and often fluctuating amount of ballast quantity of the screening units. In addition, this intermediate storage means that the ballast still accumulating from the sieving units in the event of a sudden interruption of the work approach of the machine can be stored without the ballast being uselessly transported for reintroduction. This reliably eliminates any undesirable accumulation of ballast in the track area that has already been processed.

Eine bevorzugte Ausführungsform der Erfindung besteht darin, dass der Zwischenspeicher als Teil der Förderband-Anordnung zum Weitertransport des gereinigten Schotters mit einem als Bodenfläche dienenden und einen eigenen Antrieb aufweisenden Speicher-Förderband mit Speicher-Seitenwänden ausgebildet ist. Mit dieser Ausbildung des Zwischenspeichers ist ohne Umrüst- oder Einstellarbeiten allein durch Stillstand des als Bodenfläche dienenden Speicher-Förderbandes eine vorteilhafte Schotterspeicherung durchführbar.A preferred embodiment of the invention consists in the fact that the intermediate storage as part of the conveyor belt arrangement for the further transport of the cleaned ballast is designed with a storage conveyor belt with storage side walls serving as a bottom surface and having its own drive. With this design of the intermediate store, an advantageous ballast storage can be carried out without retrofitting or adjustment work solely by the standstill of the storage conveyor belt serving as the floor area.

Die Erfindung ist gemäss einer weiteren vorteilhaften Ausführungsform dadurch gekennzeichnet, dass wenigstens eine der beiden voneinander unabhängig beschickbaren Siebeinheiten aIsZwischenspeicher mit einer im Bereich der Schotter-AuswurfsteRe angeordneten und diese verschliessenden Steuerklappe ausgebildet ist. Durch diese mit einer Steuerklappe verschliessbare Siebeinheit ist diese selbst in einfachster Weise bedarfsweise als Zwischenspeicher für den Schotter einsetzbar. Dabei ist von besonderem Vorteil, dass durch die Anordnung zweier voneinander unabhängig einsetzbarer Siebeinheiten gleichzeitig eine Siebeinheit z.B. mit voll er Leistung einsetzbar ist, während die andere Siebeinheit Schotter speichert und diesen erst bei zu geringem Schotteranfall weitergibt.According to a further advantageous embodiment, the invention is characterized in that at least one of the two sieve units which can be fed independently of one another is designed as an intermediate store with a control flap which is arranged in the region of the ballast ejection star and closes it. By means of this sieve unit, which can be closed with a control flap, it can itself be used in the simplest way as an intermediate store for the ballast. It is particularly advantageous that by arranging two sieve units that can be used independently of one another, one sieve unit, e.g. can be used at full capacity, while the other sieving unit stores ballast and only passes it on when there is too little ballast.

Gemäss einer anderen vorteilhaften Variante der Erfindung können die Vibrations-Antriebe vorzugsweise beider Siebeinheiten und der Antrieb der Förder- bzw. Räumkette mit einer Steuereinrichtung in Verbindung stehen, die bei Stillstand des Antriebes für die Förder- bzw. Räumkette zur automatischen Absenkung der Schwingungsfrequenz einer der beiden Vibrationsantriebe auf eine - den auf den Sieben befindlichen Schotter nicht mehr bewegende - niedrigere Schwingungsfrequenz ausgebildet werden. Auf diese Weise ist sichergestellt, dass sofort bei Unterbrechung der Arbeitsvorfahrt der Maschine und damit verbundenem Stop der Förder- bzw. Räumkette eine Speicherung des Schotters in einer der beiden Siebeinheiten erfolgt. Diese Speicherung wird dadurch erreicht, dass infolge der Absenkung der Schwingungsfrequenz des Vibrationsantriebes der auf den Sieben befindliche Schotter nicht in Bewegung versetzt wird. Durch die Beibehaltung einer niedrigen Schwingungsfrequenz während der Speicherung ist mit wenig Energieaufwand eine rasche Umstellung auf volle Siebleistung möglich.According to another advantageous variant of the invention, the vibration drives, preferably both sieve units and the drive of the conveyor or clearing chain, can be connected to a control device which, when the drive for the conveyor or clearing chain is at a standstill, automatically reduces the oscillation frequency of one of the Both vibration drives are designed for a lower vibration frequency - the ballast no longer moving on the sieves. This ensures that the ballast is stored in one of the two sieving units immediately when the machine's right of way is interrupted and the conveyor or clearing chain is stopped. This storage is achieved in that the ballast on the sieves is not set in motion as a result of the lowering of the oscillation frequency of the vibration drive. By maintaining a low oscillation frequency during storage, a quick switch to full sieving capacity is possible with little energy expenditure.

Gemäss einer weiteren möglichen Ausbildung der Erfindung ist vorgesehen, dass im Bereich der gemeinsamen Schotter-Auswurfstelle unterhalb der Siebanlage die Förderband-Anordnung zum Weitertransport des gereinigten Schotters aus zwei im Abstand parallel zueinander in Maschinenlängsrichtung verlaufenden, vorzugsweise rinnenförmig ausgebildeten Sammel-Förderbändern gebildet ist, deren Abwurfenden vorzugsweise oberhalb des Zwischenspeichers angeordnet sind, wobei zwischen den beiden Sammel-Förderbändern das vorzugsweise ebenso rinnenförmig ausgebildete Abraum- Förderband vorgesehen ist. Mit dieser Ausbildung der Sammel-Förderbänder im Bereich der Siebanlage ist in vorteilhafter Weise sowohl für den Abraum als auch den gereinigten Schotter ein in bezug auf die Längsmittel-Linie der Siebanlage symmetrische Abraum- bzw. Schotterabgabe möglich.According to a further possible embodiment of the invention, it is provided that in the area of the common ballast ejection point below the screening plant, the conveyor belt arrangement for the further transport of the cleaned ballast is formed from two collecting conveyor belts, which are preferably channel-shaped and run parallel to one another in the machine longitudinal direction Throwing ends are preferably arranged above the intermediate store, the overburden conveyor belt, which is preferably also channel-shaped, is provided between the two collecting conveyor belts. With this design of the collecting conveyor belts in the area of the screening plant, an overburden or ballast discharge symmetrical with respect to the longitudinal center line of the screening plant is advantageously possible for both the overburden and the cleaned ballast.

Weitere Vorteile der Erfindung werden dadurch erzielt, dass der Förderband-Anordnung wenigstens ein weiteres, am Maschinenrahmen angeordnetes und bis zum hinteren Maschinenende oder mit seinem Abwurfende bis über das Maschinenende reichendes, vorzugsweise rinnenförmig ausgebildetes Verteil-Förderband - für einen wahlweisen Abwurf des gereinigten Schotters als zweite Lageaufbringung in den Schwellenzwischenfächern und bzw. oder ein ebenso vorzugsweise rinnenförmig ausgebildetes Abtransport-Förderband für einen Weitertransport des überschüssigen Schotters, beispielsweise bis zu einem Schüttgutverladezug-zugeordnet ist. Die Verlängerung der Förderband-Anordnung bis zum hinteren Maschinenende für die Schwellenfacheinschotterung und bzw. oder zum Abtransport von überschüssigem Schotter ermöglicht eine besonders leistungsfähige und sofortige Anpassung an die gegebenen Schotterverhältnisse.Further advantages of the invention are achieved in that the conveyor belt arrangement has at least one further conveyor belt arranged on the machine frame and extending to the rear machine end or with its discharge end extending above the machine end, preferably in the form of a groove - for an optional discharge of the cleaned ballast as second layer application in the intermediate sleeper compartments and / or an equally preferably channel-shaped removal conveyor belt for a further transportation of the excess ballast, for example up to a bulk material loading train. The extension of the conveyor belt arrangement to the rear end of the machine for the sleeper compartment ballast and / or for the removal of excess ballast enables a particularly efficient and immediate adaptation to the given ballast conditions.

Im folgenden wird die Erfindung anhand dreier in der Zeichnung dargestellter Ausführungsbeispiele näher beschrieben.The invention is described in more detail below with reference to three exemplary embodiments shown in the drawing.

Es zeigen:

  • Fig. 1 eine Seitenansicht der erfindungsgemässen Schotterbett-Reinigungsmaschine zur Aufnahme, Reinigung und zum Wiedereinbringen von Bettungsschotter mit der Siebanlage,
  • Fig. 2 eine schematische Draufsicht auf die Schotterbett-Reinigungsmaschine gemäss Fig. 1.,
  • Fig. 3 eine vergrösserte Detail-Seitenansicht der Siebanlage der Schotterbett-Reinigungsmaschine gemäss Fig. 1 und 2,
  • Fig. 4 eine schematische Draufsicht auf ein anderes Ausführungsbeispiel einer Siebanlage, und
  • Fig. 5 eine andere Ausführungsform in teilweise vergrösserter Detail-Seitenansicht einer als Zwischenspeicher ausgebildeten Siebanlage.
Show it:
  • 1 is a side view of the ballast bed cleaning machine according to the invention for picking up, cleaning and reintroducing ballast ballast with the screening plant,
  • 2 shows a schematic top view of the ballast bed cleaning machine according to FIG. 1,
  • 3 is an enlarged detail side view of the screening plant of the ballast bed cleaning machine according to FIGS. 1 and 2,
  • Fig. 4 is a schematic plan view of another embodiment of a screening plant, and
  • Fig. 5 shows another embodiment in a partially enlarged detail side view of a screening plant designed as a buffer.

Eine in Fig. 1 und 2 ersichtliche Schotterbett-Reinigungsmaschine 1 mit einem Maschinenrahmen 2 ist über Schienenfahrwerke 3 auf einem aus Schwellen 4 und Schienen 5 gebildeten Gleis 6 in der durch einen Pfeil 7 dargestellten Arbeitsrichtung kontinuierlich verfahrbar. Der Maschinenrahmen 2 mit den endseitig angeordneten Fahrkabinen 8 besteht aus einem vorderen Rahmenteil 9 und einem mit diesem durch ein Gelenk 10 verbundenen hinteren Rahmenteil 11. Oberhalb des Gelenkes 10 sind beide Rahmenteile 9, 11 durch eine Spreiz-Zylinder-Kolben-Anordnung 12 miteinander verbunden. Zur Versorgung der Arbeitsaggregate und eines Fahrantriebes 13 ist eine Energieversorgungszentrale 14 vorgesehen. Am hinteren Rahmenteil 11 ist eine endlos ausgebildete, mit ihrem Quertrum 15 unter das Gleis 6 hindurchgeführte Förder- bzw. Räumkette 16 mit einem Antrieb 17 höhen- und seitenverstellbar angeordnet. Zur Erhöhung der Förder- und Räumleistung ist im Bereich einer Kettenführungs-Längsbahn eine endlose, in einer vertikalen Ebene rotierbare Zusatzkette 18 mit der Förder- bzw. Räumkette 16 verbunden.A ballast bed cleaning machine 1 shown in FIGS. 1 and 2 with a machine frame 2 can be moved continuously via rail trolleys 3 on a track 6 formed from sleepers 4 and rails 5 in the working direction represented by an arrow 7. The machine frame 2 with the cabs 8 arranged at the ends consists of a front frame part 9 and a rear frame part 11 connected to it by a joint 10. Above the joint 10, both frame parts 9, 11 are connected to one another by an expansion cylinder-piston arrangement 12 . An energy supply center 14 is provided to supply the working units and a travel drive 13. On the rear frame part 11 there is an endlessly configured conveyor or clearing chain 16 with a transverse strand 15, which is guided under the track 6 and is adjustable in height and in a lateral direction with a drive 17. In order to increase the conveying and clearing capacity, an endless additional chain 18 which is rotatable in a vertical plane is connected to the conveying or clearing chain 16 in the region of a longitudinal chain guide track.

Etwa mittig am vorderen Rahmenteil 9 der Schotterbett-Reinigungsmaschine 1 ist eine aus zwei in Maschinenlängsrichtung hintereinander angeordneten Siebeinheiten 19, 20 gebildete Siebanlage 21 angeordnet. Die beiden über ein Transport-Förderband 22 beschickbaren Siebeinheiten 19, 20 der Siebanlage 21 sind - unter Bildung einer gemeinsamen Schotter-Auswurfstelle 23 und zwei voneinander getrennten Schotter-Einwurfstellen 24, 25-quer zur Maschinenlängsrichtung gesehen V-förmig zueinander geneigt angeordnet. Zwischen dem Transport-Förderband 22 und der Siebanlage 21 ist jeweils ein jeder Siebeinheit 19, 20 zugeordnetes Einwurf-Förderband 26 zum Einwurf des zu reinigenden Schotters vorgesehen.Approximately in the middle of the front frame part 9 of the ballast bed cleaning machine 1 is a screening plant 21 formed from two screening units 19, 20 arranged one behind the other in the machine longitudinal direction. The two screening units 19, 20 of the screening system 21 which can be fed via a transport conveyor belt 22 are arranged in a V-shape inclined to one another, forming a common ballast ejection point 23 and two ballast insertion points 24, 25 separated from one another, transverse to the machine longitudinal direction. Between the transport conveyor belt 22 and the screening plant 21 there is provided a throw-in conveyor belt 26 assigned to each screen unit 19, 20 for the throw-in of the ballast to be cleaned.

Unterhalb der gemeinsamen Schotter-Auswurfstelle 23 der Siebanlage 21 ist das aufnahmeseitige Ende einer den gereinigten Schotter in die Gleisbettung wieder einbringenden Förderband-Anordnung 27 vorgesehen, die sowohl im Bereich des freigelegten Planums eine erste, als auch am hinteren Maschinenende eine zweite Schotter-Abwurfstelle 28, 29 aufweist. Zur Zwischenspeicherung von insbesondere überschüssigem Schotter ist ein - im Schotterfluss zwischen der Siebanlage 21 und der Abwurfstelle 28 gelegener - Zwischenspeicher 30 vorgesehen. Dieser ist als Teil der Förderband-Anordnung 27 zum Weitertransport des gereinigten Schotters mit einem als Bodenfläche dienenden und einen eigenen Antrieb aufweisenden Speicher-Förderband 31 ausgebildet. An das abwurfseitige Ende dieses Speicher-Förderbandes 31 anschliessend ist zur Bildung der ersten Abwurfstelle 28 eine Verteilschurre 32 mit drei Auslassöffnungen am Maschinenrahmen 2 befestigt, von denen eine mittige zwischen den Schienen 5 und jeweils eine Auslassöffnung über dem Schwellenkopfbereich vorgesehen ist. Das an den Zwischenspeicher 30 anschliessende Verteil-Förderband 33 der Förderband-Anordnung 27 weist im Bereich des aufnahmeseitigen Endes ein Umlenkorgan auf. Das abgabenseitige Ende mündet in eine die zweite Abwurfstelle 29 bildende Verteilschurre 34 zur Einschotterung der Schwellenfächer. Oberhalb des Förderbandes 33 ist noch ein Abtransport-Förderband 35 vorgesehen, das für einen wahlweisen Weitertransport des gereinigten und überschüssigen Schotters, beispielsweise bis zu einem nachfolgenden Schüttgut-Verladezug in Maschinenlängsrichtung verschiebbar gelagert ist. Wie insbesondere in Fig. 2 ersichtlich, ist im Bereich der gemeinsamen Schotter-Auswurfstelle 23 unterhalb der Siebanlage 21 die Förderband-Anordnung 27 zum Weitertransport des gereinigten Schotters aus zwei im Abstand parallel zueinander in Maschinenlängsrichtung verlaufenden Sammel-Förderbändern 36 gebildet. Zwischen den beiden Sammel- Förderbändern 36 ist ein zum vorderen Maschinenende führendes Abraum- Förderband 37 vorgesehen.Below the common ballast ejection point 23 of the screening plant 21, the receiving end of a conveyor belt arrangement 27 which brings the cleaned ballast back into the track bed is provided, which has a first ballast discharge point 28 both in the region of the exposed formation and a second ballast discharge point 28 at the rear machine end , 29 has. To temporarily store excess ballast in particular, a buffer store 30 is provided - located in the ballast flow between the screening plant 21 and the discharge point 28. This is designed as part of the conveyor belt arrangement 27 for the further transport of the cleaned ballast with a storage conveyor belt 31 serving as a bottom surface and having its own drive. At the end of this storage conveyor belt 31 at the discharge end, a distribution chute 32 with three outlet openings is attached to the machine frame 2 to form the first discharge point 28, one of which is provided centrally between the rails 5 and one outlet opening above the sleeper head area. The distribution conveyor belt 33 of the conveyor belt arrangement 27 adjoining the intermediate store 30 has a deflection member in the region of the end on the receiving side. The end on the discharge side opens into a distribution chute 34 forming the second discharge point 29 for the bulkheading of the sleeper compartments. Above the conveyor belt 33 there is also a removal conveyor belt 35 which is mounted so as to be able to be moved onward for optional further transport of the cleaned and excess ballast, for example up to a subsequent bulk material loading train in the machine longitudinal direction. As can be seen in particular in FIG. 2, in the area of the common ballast ejection point 23 below the screening plant 21, the conveyor belt arrangement 27 for the further transport of the cleaned ballast is formed from two collecting conveyor belts 36 running parallel to one another in the machine longitudinal direction. A spoil conveyor 37 leading to the front end of the machine is provided between the two collecting conveyor belts 36.

In der vergrösserten Detailzeichnung gemäss Fig. 3 ist die V-förmige Anordnung der Siebeinheiten 19, 20 besonders gut erkennbar. Jede Siebeinheit 19, 20 weist zwei zur Horizontalebene geneigte Siebe 28 sowie einen eigenen Vibrationsantrieb 39 auf. Dieser ist jeweils aus in Rotation versetzbaren Unwuchterregern gebildet, die die gesamte, auf Federn 40 gelagerte Siebeinheit 19 bzw. 20 in lineare Schwingungen versetzt. Die Federn 40 sind ihrerseits auf einem Tragrahmen 41 abgestützt, der um eine in Maschinenlängsrichtung verlaufende Mittelachse verschwenkbar am Maschinenrahmen 2 gelagert und mit Verstellzylindern 42 verbunden ist. Mit diesen kann die gesamte Siebeinheit während der Reinigungsarbeit in Gleisabschnitten mit Querneigung verschwenkt werden, so dass trotz der Querneigung eine horizontaleLage der Siebe 38 für eine ungestörte Reinigung des Schotters vorliegt.3, the V-shaped arrangement of the sieve units 19, 20 can be seen particularly well. Each sieve unit 19, 20 has two sieves 28 inclined to the horizontal plane and its own vibration drive 39. This is formed in each case from unbalance exciters which can be set in rotation and which sets the entire sieve unit 19 or 20 mounted on springs 40 in linear vibrations. The springs 40 are in turn supported on a support frame 41 which is mounted on the machine frame 2 so as to be pivotable about a central axis running in the longitudinal direction of the machine and is connected to adjusting cylinders 42. With these, the entire screen unit can be pivoted during the cleaning work in track sections with a cross slope, so that despite the cross slope, the screens 38 are in a horizontal position for undisturbed cleaning of the ballast.

Die Vibrations-Antriebe 39 beider Siebeinheiten 19, 20 und der Antrieb 17 der Förder- bzw. Räumkette 16 stehen mit einer zentralen Steuereinrichtung 43 in Verbindung. Diese ist bei Stillstand des die Förder- bzw. Räumkette 16 in Rotation versetzenden Antriebes 17 zur automatischen Absenkung der Schwingungsfrequenz der Vibrationsantriebe 39 beider Siebeinheiten 19, 20 auf eine den Schotter auf den Sieben 38 nicht mehr bewegende niedrige Schwingungsfrequenz ausgebildet. Die Einwurf-Förderbänder 26 sind mit jeweils einem eigenen Antrieb 44 für jeweils eine im Vergleich zur Förderrichtung des Schotters in der zugeordneten Siebeinheit 19 bzw. 20 entgegengesetzte, durch einen kleinen Pfeil (Fig. 3) angedeutete Förderrichtung verbunden. Das aufnahmeseitige Ende eines jeden oberhalb der jeweiligen Siebeinheit 19, 20 angeordneten Einwurf-Förderbandes 26 ist mittig zwischen den beiden Siebeinheiten 19,20 angeordnet. Über den beiden aufnahmeseitigen Enden der Einwurf-Förderbänder 26 ist das Abwurfende 45 des mit der Räum- bzw. Förderkette 16 in Verbindung stehenden, einen Antrieb 46 aufweisenden Transport-Förderbandes 22 vorgesehen.The vibration drives 39 of both screening units 19, 20 and the drive 17 of the conveyor or clearing chain 16 are connected to a central control device 43. This is at a standstill of the drive 17, which sets the conveyor or clearing chain 16 in rotation, for automatically lowering the oscillation frequency of the vibra tion drives 39 of both sieve units 19, 20 formed on a ballast on the sieves 38 no longer moving low vibration frequency. The infeed conveyor belts 26 are each connected to a separate drive 44 for a conveying direction opposite to the conveying direction of the ballast in the associated sieving unit 19 or 20 and indicated by a small arrow (FIG. 3). The end of each intake conveyor belt 26 arranged above the respective sieving unit 19, 20 is arranged centrally between the two sieving units 19, 20. Above the two receiving ends of the throw-in conveyor belts 26, the discharge end 45 of the transport conveyor belt 22, which is connected to the clearing or conveyor chain 16 and has a drive 46, is provided.

Eine in Fig. 4 ersichtliche, aus zwei ebenso V-förmig zueinander angeordneten Siebeinheiten 47 und 48 gebildete und an einem Maschinenrahmen einer Schotterbett-Reinigungsmaschine angeordnete Siebanlage 49 ist durch ein über beiden getrennten Schotter-Einwurfstellen 50, 51 angeordnetes Transport-Förderband 52 mit zu reinigendem Schotter beschickbar. Über der der Förder- bzw. Räumkette näheren Einwurfstelle 51 sind um eine vertikale Achse verschwenkbare, fahnenartige Umlenkorgane 53 zum wahlweisen Abwurf des Schotters in die Einwurfstelle 51 und bzw. oder über das Abwurfende 54 in die Einwurfstelle 50 vorgesehen. Sind die Umlenkorgane 53 in ihre durch strichlierte Linien dargestellte Position verschwenkt, wird der gesamte auf das Transport-Förderband 52 transportierte Schotter über das Abwurfende 54 in die Siebeinheit 47 abgeworfen. Am unteren Ende der beiden Siebeinheiten 47, 48 wird die gemeinsame Schotter-Auswurfstelle gebildet.A sieve system 49 shown in FIG. 4, formed from two sieve units 47 and 48 which are likewise arranged in a V-shape with respect to one another and arranged on a machine frame of a ballast bed cleaning machine, is also conveyed by a transport conveyor belt 52 arranged above two separate ballast insertion points 50, 51 cleaning gravel can be loaded. Above the infeed point 51, which is closer to the conveyor or clearing chain, flag-like deflection members 53, which can be pivoted about a vertical axis, are provided for selectively throwing the ballast into the infeed point 51 and / or via the ejecting end 54 into the infeed point 50. If the deflection members 53 are pivoted into their position shown by dashed lines, the entire ballast transported on the conveyor belt 52 is thrown into the sieving unit 47 via the discharge end 54. The common ballast discharge point is formed at the lower end of the two sieving units 47, 48.

Eine in Fig,. 5 dargestellte Siebanlage 55 einer Schotterbett-Reinigungsmaschine mit zwei voneinander unabhängig ausgebildeten, V-förmig zueinander angeordneten und mit je einer Schotter-Einwurfstelleversehenen Siebeinheiten 56, 57 weist an ihrer Unterseite eine den gereinigten Schotter 58 abtransportierende Förderband-Anordnung 59 und ein Abraum-Förderband 60 auf. Durch beide Siebeinheiten 56, 57 wird eine gemeinsame Schotter-Auswurfstelle 61 gebildet. Im Bereich der Schotter-Auswurfstelle ist an jeder Siebeinheit 56, 57 eine die Schotter-Auslassöffnungen verschliessende Klappe 62 vorgesehen. Diese ist um eine quer zur Sieblängsrichtung verlaufende Achse verschwenkbar gelagert und durch einen Verschwenkantrieb 63 von einer die Auslassöffnungen verschliessenden Position in eine die Öffnungen freigebende Position verschwenkbar. Auf diese Weise ist bedarfsweise eine Siebeinheit, gegebenenfalls auch beide, durch Verschliessen der Schotter-Auslassöffnungen kurzfristig als Zwischenspeicher 64 einsetzbar. Sobald wieder über die getrennten Schotter-Einwurfstellen zu wenig gereinigter Schotter anfällt, kann die Klappe 62 geöffnet und der in der Siebeinheit gespeicherte Schotter auf die Förderband-Anordnung 59 zur Wiedereinbringung abgeworfen werden.One in Fig. 5 shows a screening system 55 of a ballast bed cleaning machine with two screen units 56, 57, which are formed independently of one another, arranged in a V-shape with respect to one another and each provided with a ballast insertion point, and has on their underside a conveyor belt arrangement 59 which transports the cleaned ballast 58 and a waste conveyor belt 60 on. A common ballast ejection point 61 is formed by both screening units 56, 57. In the area of the ballast ejection point, a flap 62 which closes the ballast outlet openings is provided on each sieve unit 56, 57. This is pivotably mounted about an axis running transversely to the longitudinal direction of the screen and can be pivoted by a pivoting drive 63 from a position closing the outlet openings into a position in which the openings are opened. In this way, if necessary, a sieve unit, if necessary both, can be used as temporary storage 64 by closing the ballast outlet openings. As soon as too little cleaned ballast accumulates again via the separated ballast insertion points, the flap 62 can be opened and the ballast stored in the sieving unit can be thrown onto the conveyor belt arrangement 59 for reintroduction.

Die Funktionsweise der in Fig.1 1 bis3 dargestellten Schotterbett-Reinigungsmaschine mit Siebanlage ist wie folgt: Sobald durch die unter das Gleis 6 hindurchgeführte Förder- bzw. Räumkette 16 der Schotterbett-Reinigungsmaschine 1 unter kontinuierlicher Arbeitsvorfahrt verunreinigter Schotter aus der Gleisbettung aufgenommen wird, gelangt dieser auf das Transport-Förderband 22. Von diesem wird der Schotter in Arbeitsrichtung zum vorderen Rahmenteil 9 transportiert und mittig über der Siebanlage 21 auf die beiden Einwurf-Förderbänder 26 abgeworfen. Von diesen gelangt der Schotter schliesslich in die zugeordnete Siebeinheit 19 bzw. 20, wobei der Schotter entgegengesetzt zur Fliessrichtung in der Siebeinheit abgeworfen wird. Auf diese Weise ist eine besonders hohe, gegebenenfalls noch verkrusteten Schotter lösende und die Siebwirkung verstärkende Prallwirkung erzielbar. Von den durch die voneinander unabhängigen Vibrationsantriebe 39 in lineare Schwingungen versetzten und zur Horizontalebene geneigten Sieben 38 wird der Schotter, unter Trennung von Abraum, in Richtung zu der tiefer gelegenen, gemeinsamen Schotter-Auswurfstelle 23 gerüttelt und auf die beiden darunter befindlichen Verteil-Förderbänder 36 abgeworfen. Der Abraum wird durch das in Maschinenmitte verlaufende Abraum-Förderband 37 zum vorderen Maschinenende transportiert und dort auf mitgeführte Verladewagen bzw. auch auf die Gleisböschung abgeworfen. Über die beiden Sammel-Förderbänder 36 wird der gereinigte Schotter in den Zwischenspeicher 30 abgeworfen und vom Speicher-Förderband 31 weiter zur Verteilschurre 32 transportiert. Durch diese wird der Schotter in einer ersten Lageaufbringung wiederum auf das freigelegte Planum bis zum unteren Schwellenniveau abgeworfen. Je nach der Stellung des am aufnahmeseitigen Ende des Verteil-Förderbandes 33 befindlichen Umlenkorganes gelangt ein Teil des gereinigten Schotters über das genannte Förderband 33 zur am hinteren Maschinenende angeordneten Verteilschurre 34. Durch diese wird der Schotter in einer zweiten Lageaufbringung in die Schwellenfächer für eine vollständige Einschotterung des Gleises nach der Schotterbett-Reinigungsmaschine 1 abgeworfen.The method of operation of the ballast bed cleaning machine with screening plant shown in FIGS. 1 to 3 is as follows: as soon as contaminated ballast is taken up from the track bed through the conveyor or clearing chain 16 of the ballast bed cleaning machine 1 passed under the track 6, with continuous work priority the latter onto the transport conveyor belt 22. From this, the ballast is transported in the working direction to the front frame part 9 and dropped onto the two throw-in conveyor belts 26 in the center above the screening plant 21. From this, the ballast finally arrives in the assigned sieve unit 19 or 20, the ballast being thrown off in the sieve unit in the opposite direction to the direction of flow. In this way, a particularly high, possibly still encrusted ballast loosening and reinforcing the sieving effect can be achieved. The gravel is shaken by the independent vibratory drives 39 into linear vibrations and inclined to the horizontal plane, separating the spoil, in the direction of the lower, common ballast ejection point 23 and onto the two distribution conveyor belts 36 underneath thrown off. The overburden is transported by the overburden conveyor belt 37 running in the middle of the machine to the front end of the machine and is thrown there onto loaded wagons or onto the track embankment. The cleaned ballast is dropped into the intermediate storage 30 via the two collecting conveyor belts 36 and transported further from the storage conveyor belt 31 to the distribution chute 32. Through this, the ballast is thrown in turn in a first application of the layer onto the exposed subgrade to the lower threshold level. Depending on the position of the deflecting member located at the receiving end of the distribution conveyor belt 33, part of the cleaned ballast reaches the distribution chute 34 arranged at the rear end of the machine via said conveyor belt 33. Through this, the ballast is deposited in a second position in the sleeper compartments for complete ballast of the track after the ballast bed cleaning machine 1 dropped.

Sollte zu viel gereinigter Schotter anfallen, wird das Abtransport-Förderband 35 in Richtung zum Speicher-Förderband 31 längsverschoben, so dass ein Teil des von diesem abgeworfenen Schotters auf das aufnahmeseitige Ende des Abtransport-Förderbandes 35 fällt. Von diesem wird der überschüssige Schotter auf einen nachfolgenden Schottertransport-Verladezug abgeworfen.If there is too much cleaned ballast, the removal conveyor belt 35 is shifted longitudinally in the direction of the storage conveyor belt 31, so that part of the ballast thrown by it falls onto the receiving end of the removal conveyor belt 35. The excess ballast is dropped from this onto a subsequent ballast transport loading train.

Bei einer plötzlichen Unterbrechung der Arbeitsvorfahrt der Schotterbett-Reinigungsmaschine 1 wird das Speicher-Förderband 31 gestoppt, sodass der noch von den schwingenden Sieben ausgeworfene Schotter im Zwischenspeicher 30 gesammelt und damit eine unerwünschte Schotteranhäufung im Bereich der beiden Verteilschurren 32 und 34 vermieden wird. Sobald wiederum die Vorfahrt der Maschine 1 beginnt, kann das Speicher-Förderband 31 gegebenenfalls mit anfangs geringerer Umlaufgeschwindigkeit wieder in Betrieb genommen werden. Fällt z.B. bei geringer Schotterbetthöhe weniger Schotter an, wird die Umlaufgeschwindigkeit des Transport-Förderbandes 22 durch stärkere Beaufschlagung des hydraulischen Antriebes 46 erhöht. Dadurch wird die Abwurfparabel derart geändert, dass der gesamte, auf dem Förderband 22 transportierte Schotter auf das in Arbeitsrichtung vordere Einwurf-Förderband 26 abgeworfen wird. Die hintere Siebeinheit 20 und das zugeordnete Einwurf-Förderband 26 können dabei zur Einsparung von Energie ausser Betrieb genommen werden. Wird die Umlaufgeschwindigkeit des Transport-Förderbandes 22 nicht so stark erhöht, sind verschiedene Varianten möglich. So kann z.B. der grössere Schotteranteil auf das vordere und der restliche Teil auf das hintere Einwurf-Förderband 26 abgeworfen werden. Zweckmässigerweise wird dabei auch die Schwingungsfrequenz der hinteren Siebeinheit 20 herabgesetzt. Sämtliche Förderbänder sind unter Vermeidung von Betriebsstörungen zur Erzielung von hohen Transportleistungen als endlose Bänder aus gewebeverstärktem Gummi gebildet, die in einem im Querschnitt rinnenförmigen bzw. konkav gewölbten Bett aus quer zur Transportrichtung drehbaren Rollen geführt sind. Damit ist sichergestellt, dass auch bei besonders langen Transportwegen kein Schotter bzw. Abraum seitlich vom Förderband auf Maschinenteile oder Arbeitsaggregate fällt.In the event of a sudden interruption of the work approach of the ballast bed cleaning machine 1, the storage conveyor belt 31 is stopped, so that the ballast still ejected by the vibrating sieves is collected in the intermediate storage 30 and an undesired accumulation of ballast in the region of the two distribution chutes 32 and 34 is avoided. As soon as which starts the machine 1 moving forward, the storage conveyor belt 31 can, if appropriate, be put into operation again at an initially lower rotational speed. If, for example, there is less ballast with a low ballast bed height, the rotational speed of the conveyor belt 22 is increased by applying more force to the hydraulic drive 46. As a result, the discharge parabola is changed in such a way that the entire ballast transported on the conveyor belt 22 is dropped onto the front throw-in conveyor belt 26 in the working direction. The rear sieve unit 20 and the associated throw-in conveyor belt 26 can be taken out of operation in order to save energy. If the rotational speed of the conveyor belt 22 is not increased so much, different variants are possible. For example, the larger proportion of ballast can be thrown onto the front and the remaining part onto the rear throw-in conveyor belt 26. The oscillation frequency of the rear sieve unit 20 is also expediently reduced. All conveyor belts are formed as endless belts made of fabric-reinforced rubber, avoiding malfunctions to achieve high transport performance, which are guided in a cross-sectionally channel-shaped or concavely curved bed made of rollers that can be rotated transversely to the transport direction. This ensures that even with particularly long transport routes, no ballast or overburden falls sideways from the conveyor belt onto machine parts or work units.

Claims (10)

1. A ballast bed cleaning machine (1) for taking up, cleaning and reintroducing bulk material, more especially bedding ballast, comprising a conveying and clearing chain (16) arranged on a machine frame (2) and a sieve arrangement (21; 49; 55) chargeable by the conveying and clearing chain via a transporting conveyor belt (22) and consisting of two sieve units (19, 20) arranged one behind the other longitudinally of the machine at an angle relative to the horizontal plane and each comprising its own vibration drive (39), and further comprising a conveyor belt arrangement (27) for reintroduction of the cleaned ballast and a waste-spoil conveyor belt (37), characterized in that the two sieve units (19, 20; 47,48; 56, 57) of the sieve arrangement (21 ; 49; 55) chargeable via the transporting conveyor belt are arranged inclined towards one another in the form of a V on the machine frame (21), as seen transversely of the longitudinal axis of the machine, forming two separate ballast charging zones (24, 25; 50, 51 ) and a common ballast ejection zone (23; 61) arranged between them.
2. A machine as claimed in Claim 1, characterized in that a preferably channel-shaped charging conveyor belt (26) associated with each sieve unit (19, 20) is provided between the preferably concave or channel-shaped transporting conveyor belt (22) and the sieve arrangement (21 ) for introducing the ballast to be cleaned, comprising a drive (44) for a transporting direction opposite to the direction in which the ballast is transported in the associated sieve unit (19, 20).
3. A machine as claimed in Claims 1 and 2, characterized in that the receiving end of each charging conveyor belt (26) arranged above the particular sieve unit (19, 20) is arranged centrally between the two sieve units (19,20) and the ejection end (45) of the transporting conveyor belt (22) conected to the conveying and clearing chain is disposed above the two receiving ends.
4. A machine as claimed in Claim 1, characterized in that the transporting conveyor belt (52) is arranged above both charging zones (50, 51 ) of the two sieve units (47,48), a deflector (53) being arranged above the charging zone (51) - nearer the conveying and clearing chain - of one sieve unit (48) for selectively ejecting the ballast from the transporting conveyor belt (52) and the ejection end (54) of the transporting conveyor belt (52) being arranged above the other charging zone (50) (Fig. 4).
5. A machine as claimed in any of Claims 1 to 4, characterized in that an intermediate storage container arranged in the ballast flow direction between the sieve arrangement (21 ) and the ejection zone (28) of the arrangement (27) for the further transport of ballast is provided for the intermediate storage of ballast, particularly surplus ballast.
6. A machine as claimed in Claim 5, characterized in that the intermediate storage container (30) is part of the conveyor belt arrangement (27) for further transport of the cleaned ballast which incorporates a storage conveyor belt (31) with side walls serving as base and having its own drive.
7. A machine as claimed in any of Claims 1 to 6, characterized in that at least one of the two independently chargeable sieve units (56, 57) forms an intermediate storage container (64) with a control flap (62) arranged in the region of, and closing, the ballast ejection zone (61 ).
8. A machine as claimed in any of Claims 1 to 7, characterized in that the vibration drives (39) of preferably both sieve units (19, 20) and the drive (17) of the conveying and clearing chain (16) are linked to a control unit (43) which automatically reduces the vibration frequency of one of the two vibration drives (39) when the drive for the conveying and clearing chain (16) comes to a standstill to a lower vibration frequency at which the ballast on the sieves (38) is no longer moved.
9. A machine as claimed in any of Claims 1 to 8, characterized in that in the region of the common ballast ejection zone (23) beneath the sieve arrangement (21 ) the conveyor belt arrangement (27) for further transport of the cleaned ballast is formed by two preferably channel-shaped collecting conveyor belts (36) which extend parallel to and at a distance from one another longitudinally of the machine and of which the ejection ends are preferably arranged above the intermediate storage container (30), the waste-spoil conveyor belt (37) which likewise is preferably channel-shaped, being provided between the two collecting conveyor belts (36).
10. A machine as claimed in Claim 9, characterized in that at least one other, preferably channel-shaped distributing conveyor belt (33) arranged on the machine frame and extending to the rear end of the machine or - with its ejection end - beyond the end of the machine is associated with the conveyor belt arrangement (27) for selective ejection of the cleaned ballast into the sleeper cribs to form a second layer of ballast and/or a likewise preferably channel-shaped removing conveyor belt (35) is associated with the conveyor belt arrangement (27) for further transport of the surplus ballast, for example to a train for loading bulk material.
EP86890087A 1986-04-02 1986-04-02 Ballast cleaning machine with cribbing means Expired EP0240648B1 (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
EP86890087A EP0240648B1 (en) 1986-04-02 1986-04-02 Ballast cleaning machine with cribbing means
DE8686890087T DE3660874D1 (en) 1986-04-02 1986-04-02 Ballast cleaning machine with cribbing means
AT86890087T ATE37732T1 (en) 1986-04-02 1986-04-02 TRACK BALANCE BED CLEANING MACHINE WITH SCREEN PLANT.
AU66389/86A AU583689B2 (en) 1986-04-02 1986-12-10 A machine with a sieve arrangement for cleaning the ballast bed of railway tracks
ES8603367A ES2003974A6 (en) 1986-04-02 1986-12-11 Ballast cleaning machine with cribbing means.
PL1986263128A PL154222B1 (en) 1986-04-02 1986-12-19 Apparatus for cleaning railroad track bed aggregate,provided with sifting unit
CN87100340.6A CN1005201B (en) 1986-04-02 1987-01-19 Railway ballast screen scarifier with screen device
JP62012144A JP2592819B2 (en) 1986-04-02 1987-01-21 Track gravel floor cleaning machine
US07/013,710 US4813488A (en) 1986-04-02 1987-02-12 Ballast cleaning machine
CA000529892A CA1287268C (en) 1986-04-02 1987-02-17 Ballast cleaning machine
HU87746A HU198307B (en) 1986-04-02 1987-02-26 Ballast cleaning machine with screening apparatus
SU874202141A SU1512491A3 (en) 1986-04-02 1987-03-13 Mobile machine for receiving, cleaning and placing crushed-stone ballast
DD87301262A DD256156A5 (en) 1986-04-02 1987-03-30 GLEIS-SCHOTTERBETT CLEANING MACHINE WITH SCREENING SYSTEM
CS872296A CS270221B2 (en) 1986-04-02 1987-04-01 Ballast machine cleaning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP86890087A EP0240648B1 (en) 1986-04-02 1986-04-02 Ballast cleaning machine with cribbing means

Publications (2)

Publication Number Publication Date
EP0240648A1 EP0240648A1 (en) 1987-10-14
EP0240648B1 true EP0240648B1 (en) 1988-10-05

Family

ID=8196557

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86890087A Expired EP0240648B1 (en) 1986-04-02 1986-04-02 Ballast cleaning machine with cribbing means

Country Status (14)

Country Link
US (1) US4813488A (en)
EP (1) EP0240648B1 (en)
JP (1) JP2592819B2 (en)
CN (1) CN1005201B (en)
AT (1) ATE37732T1 (en)
AU (1) AU583689B2 (en)
CA (1) CA1287268C (en)
CS (1) CS270221B2 (en)
DD (1) DD256156A5 (en)
DE (1) DE3660874D1 (en)
ES (1) ES2003974A6 (en)
HU (1) HU198307B (en)
PL (1) PL154222B1 (en)
SU (1) SU1512491A3 (en)

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AT398213B (en) * 1989-10-31 1994-10-25 Plasser Bahnbaumasch Franz MACHINE FOR RECEIVING AND DISTRIBUTING THE BEDGING BALL
US5183118A (en) * 1990-09-28 1993-02-02 Knox Kershaw, Inc. High-capacity ballast reconditioning apparatus
US5029649A (en) * 1990-11-19 1991-07-09 Knox Kershaw, Inc. Ballast reconditioning apparatus
AT398592B (en) * 1992-02-19 1994-12-27 Plasser Bahnbaumasch Franz LOADING TROLLEYS TO RECEIVE, RETURN AND SHIP BULK GOODS
AT398096B (en) * 1992-04-29 1994-09-26 Plasser Bahnbaumasch Franz PLANT FOR THE CONTINUOUS RESTORATION OF A GRAVEL BED OF A TRACK
DE9306779U1 (en) * 1993-05-05 1993-07-15 Hermann Wiebe Grundstuecks- Und Maschinenanlagen Kg, 2800 Bremen, De
GB2315144A (en) * 1996-07-09 1998-01-21 Melvyn John Wilson Emergency pinpointer
GB2362977A (en) * 2000-02-15 2001-12-05 Julian S Shen Portable distress calling device and life jacket comprising same
AT5031U3 (en) * 2001-11-19 2002-09-25 Plasser Bahnbaumasch Franz TRACK CONSTRUCTION MACHINE
BRPI0407155A (en) 2003-01-31 2006-02-07 Dow Corning Ireland Ltd Plasma Generation Electrode Set
GB0410749D0 (en) * 2004-05-14 2004-06-16 Dow Corning Ireland Ltd Coating apparatus
GB2413944B (en) * 2004-05-14 2006-08-16 Reckitt Benckiser Method for forming an active material containing coating on a substrate
CN101892615A (en) * 2010-08-02 2010-11-24 昆明中铁大型养路机械集团有限公司 Full section ballast bed gravel efficient screen scarifier
AT510158B1 (en) * 2010-11-25 2012-02-15 Plasser Bahnbaumasch Franz METHOD AND MACHINE FOR CLEANING A SCHOTTERBETTUNG OF A TRAIL
AT510595B1 (en) * 2011-04-05 2012-05-15 Franz Plasser Bahnbaumaschinen-Industriegesellschaft Mbh MACHINE GROUP AND METHOD FOR CLEANING THE SCRAP OF A TRACK
ITGE20120055A1 (en) * 2012-05-30 2013-12-01 Enrico Valditerra "RAILWAY MASSIVE RAILWAY MACHINE WITH VARIABLE FRONT EXCAVATION CHAIN"
CN102828450B (en) * 2012-09-10 2014-09-17 北京二七轨道交通装备有限责任公司 Material guiding device and road bed screen cleaner
FR3048985B1 (en) * 2016-03-15 2020-05-01 Matisa Materiel Industriel S.A. BALLAST BED REBUILDING MACHINE WITH TWO SCREENING MACHINES, AND BALLAST BED REBUILDING METHOD
CN107304538A (en) * 2016-04-22 2017-10-31 中国铁建高新装备股份有限公司 A kind of used quarrel scratch system of screen scarifier and its operational method
FR3097571B1 (en) 2019-06-18 2021-07-02 Matisa Materiel Ind Sa Dual Screen Ballast Screening System
FR3097570B1 (en) 2019-06-18 2022-12-16 Matisa Materiel Ind Sa Ballast screening system with two screens and two distributors

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AT316617B (en) * 1969-12-18 1974-07-25 Plasser Bahnbaumasch Franz Mobile machine for picking up, cleaning and reinstalling ballast ballast from railway tracks
FR2198442A5 (en) * 1972-09-04 1974-03-29 Concassage Ste Yonnaise
AT332442B (en) * 1973-04-16 1976-09-27 Plasser Bahnbaumasch Franz ARRANGEMENT AND PROCEDURE FOR STABILIZING THE SUBSTRUCTION PLAN OF TRACK BEDS USING SUCH ARRANGEMENT
US3900392A (en) * 1973-11-28 1975-08-19 Speno International Ballast cleaner
AT353821B (en) * 1977-12-29 1979-12-10 Plasser Bahnbaumasch Franz MOBILE GRUB BED TRACK CLEANING MACHINE
CH651870A5 (en) * 1981-03-02 1985-10-15 Canron Inc Crissier Track-bed cleaning machine which can be moved on rails
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AT380497B (en) * 1983-12-22 1986-05-26 Plasser Bahnbaumasch Franz TRACK CONSTRUCTION MACHINE WITH SCREENING SYSTEM FOR SCHUETTGUT, SCHOTTER AND THE LIKE

Also Published As

Publication number Publication date
HUT47984A (en) 1989-04-28
EP0240648A1 (en) 1987-10-14
CS270221B2 (en) 1990-06-13
DE3660874D1 (en) 1988-11-10
PL154222B1 (en) 1991-07-31
ES2003974A6 (en) 1988-12-01
PL263128A1 (en) 1988-05-26
CN87100340A (en) 1987-10-14
CA1287268C (en) 1991-08-06
JP2592819B2 (en) 1997-03-19
JPS62233303A (en) 1987-10-13
AU583689B2 (en) 1989-05-04
HU198307B (en) 1989-09-28
DD256156A5 (en) 1988-04-27
CN1005201B (en) 1989-09-20
ATE37732T1 (en) 1988-10-15
CS229687A2 (en) 1989-10-13
US4813488A (en) 1989-03-21
AU6638986A (en) 1987-10-08
SU1512491A3 (en) 1989-09-30

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