EP0408837A1 - Device for ballast cleaning machines - Google Patents

Abstract

Device (16) for a ballast cleaning machine (3) which is movable on tracks, is connected to the said machine for common continuous (nonstop) forward movement and is designed to pick up ballast which is lying on the track (7) or is interstratified, ahead in the working direction, of a clearing chain transverse strand (15) of the cleaning machine (3) running transversely below the track frame and for depositing said ballast on the exposed ballast. The device (16) is connected to the machine frame (5) of the cleaning machine (3) via a vertical adjustment drive for the purposes of direct lowering between the continuously grasped or raised rails onto the upper side of the sleeper and is designed to separate an upper or interstratified layer of ballast (17) from a lower layer of ballast (18) to be cleaned, during the forward travel of the machine. In this arrangement, the ballast separating device (16) extends in its length in the longitudinal direction of the machine with its delivery point, for depositing the ballast volume picked up on the exposed ballast directly behind the transverse strand (15), as far as above the clearing chain transverse strand (15). <IMAGE>

Description

The invention relates to a device for a track-movable ballast bed cleaning machine, which is connected to this for a common continuous (non-stop) right of way and for receiving ballast strands of the cleaning machine lying on the track or temporarily stored in the working direction in front of a cross-chain chain run of the cleaning machine which runs transversely below the rail framework and is designed to deliver the same to the exposed bed.

The cleaning or renewal of the ballast of railway tracks has become more difficult in recent years not only because of the inevitable blocking of the increasing traffic on the track during this cleaning work, but also because of the fact that not only the upper ballast layer in one pass should be cleaned, but economically a much deeper layer of ballast below the raised track, often reaching to the level. As a result, the amount of ballast to be implemented in this track maintenance work is considerably larger and the performance or the advancing speed of such ballast bed cleaning machines is comparatively smaller. - The renewal of the ballast bedding of railway tracks basically includes clearing the ballast bed, cleaning the entire cleared ballast with return and distribution of the cleaned ballast, as well as the removal of the overburden. This is carried out with ballast bed cleaning machines, which have a ballast clearing chain that can be inserted transversely below the rail structure, a track lifting device and a ballast cleaning screen and conveyor belts for reintroducing the ballast and for removing the overburden. With the help of the ballast clearing chain running transversely underneath the raised track structure, the entire width of the ballast bed is basically determined cleared in one pass, so that the machine can only advance very slowly, even with maximum utilization of the working capacity of the machine. However, this right of way becomes slower the deeper this layer of gravel bed is to be cleared. Furthermore, in order not to hinder the traffic on the track too much, this renewal is always carried out after longer periods of time and often only after a long period of time, so that the ballast is heavily encrusted and the water can no longer drain, making the entire renewal even more complex becomes. It is also known - in order to facilitate the drainage of the water without carrying out a renewal of the ballast over the entire width of the track - to remove and clean the ballast only by means of so-called flank cleaning machines on the side banks of the track. Flank cleaning machines of this type operate at an advancement speed which is somewhat higher than that of machines which renew the ballast over the entire width of the track in one work pass.

According to AT-PS 375 426 by the same applicant or patent owner, a ballast bed cleaning machine is known which is equipped with a double sieve in order to increase the performance of the ballast cleaning process. This has an endless conveyor or clearing chain that can be inserted transversely through the raised track structure, on the rising conveyor part of which an additional, endlessly designed auxiliary conveyor chain is provided in order to take up even more ballast in terms of performance and to clean a larger ballast volume overall when driving through faster to be able to. The transverse strand of the conveyor or clearing chain which runs transversely beneath the track and is arranged directly in the area of the track lifting device thus conveys the ballast over the conveyor and clearing chain and via this additional chain Auxiliary conveyor chain up to the double sieve, which is composed of two sieve units arranged one behind the other in the longitudinal direction of the machine to increase the cleaning capacity. The contaminated ballast is laterally cleared away with the help of the transverse strand with the formation of a ballast bed gap and transported up together with the auxiliary conveyor chain to the screening plant. The track is continuously raised in this area by the track lifting device, so that in particular a ballast clearing device with an increased working height of the transverse run can be used without any problems both for low ballast beddings and for a deeper excavation. The ballast cleaned by the double screening plant is transported on a ballast discharge conveyor belt for distribution directly behind the cross strand into the ballast bed gap. The overburden is dumped with an overburden conveyor belt arrangement on the machine. This ballast bed cleaning machine has proven itself well in practice and already enables very efficient cleaning with a higher ballast bed that is suitable for embedding particularly heavily used tracks.

It is further known - according to AT-PS 235 328 - a ballast bed cleaning machine which consists of two coupled and jointly movable single machines, each with a machine frame supported on two bogies arranged at a relatively short distance behind each other, the front machine with two Ballast flank excavation devices and a cleaning sieve assigned to them and the rear machine is equipped with a clearing chain that can be inserted transversely below the track and a cleaning sieve assigned to it, and each with ballast distribution and overburden conveyor belts. With this machine combination, which does not have a track lifting device, the ballast can be picked up in both flank areas and in the same work pass from the middle section of the track, cleaned and fed to the entire track bed exposed by the cross-clearing chain by means of a common conveyor belt with the reinserting device of the rear machine. When used as a single machine, the ballast picked up by the flanks is cleaned and returned to the same side of the flanks via ballast outlets. With this known combination of two mutually coupled individual cleaning machines, each with a short center distance of the trolleys carrying these machines, since there is also no track lifting device, only slow work progress can be achieved.

It is also known - according to US Pat. No. 4,705,115 - a ballast bed cleaning machine which, however, is structurally complex overall and also has a relatively complex, wide clearing chain which runs continuously in a plane perpendicular to the axis of the track. The machine consists of the endless clearing chain that can be inserted below the track in the cross-machine direction, and a relatively large bucket wheel with a multitude of bucket-shaped buckets is arranged in the working direction on each side of the machine. With these paddle wheels, which can be rotated about a transverse axis, the ballast is picked up from the two flank areas of the ballast bed, raised to about half the machine height and transported via conveyor belts across the machine longitudinal direction via the rails into the middle of the track and then with bridging the transverse run over conveyor belts in the machine longitudinal direction, as well directly behind the cross strand on the track - again uncleaned - thrown off. The ballast picked up by the clearing chain below the track is in a downstream sieve system cleaned and then thrown onto both flank areas. This ballast bed cleaning machine therefore only cleans the ballast located below the sleepers of a track that has not been lifted, while the flank ballast with the relatively complicated paddle wheels is laboriously transported up, across the rails and then longitudinally and finally thrown uncleaned onto the exposed bedding in the middle of the track becomes.

Finally - according to an article in the magazine "Railway Track &Structures", Oct. 1987, pages 17, 18, 20 and 21 - a machine arrangement formed from two ballast bed cleaning machines which can be moved independently of one another is known. The machine arranged upstream in the working direction has such a bucket-shaped bucket-shaped bucket wheel on each machine longitudinal side and a screening plant arranged in the center, according to US Pat. No. 4,705,115. The ballast picked up by the bucket wheels in the flank area is fed to the screening plant via a conveyor belt and is thrown off again by the latter over the flank areas for intermediate storage. By means of the two paddle wheels of the subsequent cleaning machine, the "cleaned" ballast that has been thrown off is picked up again on both sides, conveyed up and across the rails and transported in the longitudinal direction and - bridging the transverse run of an endless conveyor chain running transversely beneath the non-raised track the exposed ballast was thrown off the middle of the track. The ballast picked up by the conveyor chain below the sleepers in the middle area is thrown off onto the two flank areas after cleaning. The two elaborate paddle wheels with the two transverse conveyor belts and the conveyor belt extending halfway up the chain run thus form a device for a track Movable ballast bed cleaning machine for picking up ballast lying or temporarily stored on the track in front of a clearing chain cross strand of the cleaning machine running below the track framework and for delivering the same to the uncovered bedding. The implementation, however, requires a relatively high level of design effort with a total of four paddle wheels and also a double lateral deposit of the cleaned flank ballast and its cumbersome, double resumption as well as a subsequent time-consuming and labor-intensive upward, transverse and longitudinal transport across the cross strand of the endless clearing chain, whereby - since there is also no lifting of the track - overall no increase in performance can be achieved with quick access.

The object of the invention is to provide a device for a track-operated ballast bed cleaning machine of the type described above, which is simpler in construction and operation and with which ballast lying or temporarily stored in front of the chain cross strand is easier and quicker to use uncovered track bedding.

This object is achieved according to the invention with a device for a track-traveling ballast bed cleaning machine of the type described in the introduction in that the device for immediate lowering between the continuously detected or raised rails on the upper side of the sleepers is connected to the machine frame of the cleaning machine via a height adjustment drive and for separating or dividing an upper or intermediate layer of ballast from a lower layer of ballast to be cleaned - during the approach of the machine - and in length in the longitudinal direction of the machine with its delivery point - for delivery of the of the ballast volume recorded on the exposed bed immediately behind the cross strand - at least up to above the clearing chain cross strand. With a ballast separating device according to the invention, which is surprisingly particularly simple to set up and operate, it is very simple to roughly separate an upper layer of ballast from the lower layer of ballast to be cleaned, and at the same time also to transfer the upper layer of ballast over the transverse strand of the clearing chain feasible, so that it only has to absorb the lower ballast layer with substantial work relief for the subsequent cleaning process. It is advantageous that the ballast separating device only briefly separates or divides the ballast bed by the device being able to be pushed through the ballast directly above the threshold at low speed with low energy and technical effort. In the subsequent edition, the ballast is essentially not relocated locally, but is only slightly lifted from the lower, unpurified layer of ballast. A significant additional advantage of the device according to the invention is also its central arrangement between the rails. As a result, the upstream ballast can be concentrated on a single, relatively wide and side-limited area of the rails, which also eliminates the need for cumbersome upward, lateral and longitudinal transport of the ballast from the flank area over the rails into the middle of the track. In addition, the use of only a single ballast separation device is advantageously required.

An advantageous development of the invention is that the ballast separating device for receiving of cleaned, temporarily stored ballast is formed in the area in front of the clearing chain cross strand. With such a device provided in a cleaning machine, the ballast picked up by the flank area and brought into the middle area of the track in the cleaned state is exposed in the simplest and quickest way - during the same work passage and while the lower ballast layer in the middle area of the track is being excavated - on this Track middle area can be moved.

A particularly advantageous embodiment of the invention consists in that the ballast separating device is designed for continuous entrainment or support on the two rails of the track that can be raised by a track lifting device of the cleaning machine with at least one pair of wheel flanges or rollers. The support by a pair of flanged wheels or rollers ensures an advantageous, constant, in particular slight, distance of the ballast separating device from the upper side of the sleeper during the continuous approach to achieve a simple and problem-free separation. In addition, depending on the track lifting by the track lifting device, a corresponding lifting of the separating device is automatically ensured.

According to a preferred, advantageous embodiment of the invention, the ballast separating device has an overall length which extends from the delivery point arranged at least up to above the clearing chain transverse run to a receiving point which is essentially immediately behind a running gear or in a track area which has not yet been raised is sufficient, the overall length of the ballast separating device - for a machine without a track lifting device - preferably at least the length of a double sleeper division or about half the length of the chain cross strand, for example about 1.2 m and - for a machine with a track lifting device - preferably at least the length of six sleeper divisions, for example about 3.6 m, is dimensioned accordingly. With a construction length of this type - in particular in connection with a track elevation - it is ensured that the upper, in particular cleaned, ballast layer is essentially separated or separated from the lower ballast layer in front of the lifting area of the track. A loss of intake of cleaned ballast as a result of the threshold compartments being increased in volume due to the raising of the track is thus reliably avoided.

According to a very advantageous development of the invention, the height-adjustable and movable ballast separating device consists of a conveyor belt provided with a drive for conveying in the machine longitudinal direction, a conveyor upstream of this in the working direction, with its front end directly above the threshold Ballast pick-up plate arranged on the upper side and a sweeping brush assigned to the ballast pick-up plate, which can be rotated about an axis running transversely to the machine longitudinal direction and can be height-adjusted or lowered via a drive. A ballast separating device designed in this way enables, on the one hand, a robust and yet safe separation of the ballast layer by combining the ballast pick-up plate with the sweeping brush and, on the other hand, rapid and frictionless transport of the absorbed upper layer of ballast - in particular with the same right of way speed - to that in the area of the clearing chain cross strand located delivery point. The height adjustment of the sweeping brush makes it possible to achieve advantageous placement at different heights of the upper layer of ballast, as well as an adjustment possibility in relation to brush wear.

A particularly advantageous embodiment according to the invention is that the height-adjustable and movable on the rails ballast separating device from a substantially flat and parallel to the track level and arranged immediately adjacent to the inside of the rail and the top of the sleeper, for example There is a plate-shaped separating body, which is preferably formed by the bottom plate, which is in particular toothed at the front end, of a trough provided with side boundary walls and open at the top and at the end faces, in which a trough running parallel to the machine longitudinal direction and to the bottom plate and which can be acted upon by a drive - from the delivery point to the pick-up point - conveyor belt is arranged with transverse gravel driving elements reaching to the base plate. With this flat base plate design, only a very slight lifting of the upper ballast layer, which is associated with minimal energy expenditure, is required during the separation process. The trough-shaped ballast separation device can be made robust with little design effort. Thanks to the conveyor belt with the entrainment elements, the upper layer of ballast transferred to the floor slab via the separating body can be quickly moved towards the delivery point with a supporting effect.

According to a preferred development of the invention, the ballast separating device which can be adjusted in height and is movable on the rails is equipped at least with side boundary walls which are each arranged essentially up to the inside of the rail area and which extend in the machine longitudinal direction from the delivery point to the receiving point or from the rear end the conveyor belt to the sweeping brush - which forms the receiving point - or from one end to the other end reach the base plate and are connected to at least two wheel flange wheels arranged one behind the other in the longitudinal direction of the machine and to the handlebars coupled to the machine frame with height adjustment drives, preferably the two rear wheel flanges in the working direction being slidably mounted in the transverse direction and connected to an expansion drive. By arranging such side walls, an efficient pick-up of even larger amounts of ballast is possible with reliable avoidance of a lateral discharge, so that the ballast separated and picked up in the area of the pick-up point is essentially thrown off in the area of the discharge point. With the handlebar pairs and the two flanged wheel pairs, a quick change from transfer to work or vice versa is possible, with the flanged wheels guaranteeing an exact parallel guidance to the upper side of the sleeper and the spreading drive can be switched off for precise longitudinal guidance.

A particularly advantageous further development of the invention is characterized in that the drive of the conveyor belt is designed for a rotational speed of the conveyor belt which is the same as the working speed of the cleaning machine. With a drive designed in this way, the ballast located on the ballast separating device can remain essentially unchanged locally, whereby in an advantageous manner neither congestion can occur in the region of the receiving point of the upper ballast layer nor is there too little ballast. In addition, it is possible to achieve a uniform ballast discharge depending on the machine speed.

According to another preferred embodiment of the invention, the ballast separation device which is adjustable in height and movable on the rails is preferred wise arranged on the conveyor belt or the side boundary walls vibrator - in particular for vibrating in the machine longitudinal direction - connected. Due to the exposure to vibrations, the ballast separating device can be pushed under the upper layer of ballast more quickly and easily - especially while reducing the frictional resistance directed against the machine's right of way. It also supports the relocation of the ballast.

The invention also relates to a track-movable ballast bed cleaning machine system for picking up, cleaning and reintroducing the ballast ballast of railway tracks, with at least one machine frame supported on running gears, a ballast clearing chain which can be inserted transversely below the rail structure, a ballast cleaning screen and conveyor belts for Returning the ballast and for removing the overburden, as well as with a device for receiving ballast temporarily stored on the ballast bed to be cleaned and for releasing it to the bed of the cleaning machine that is exposed from the clearing chain running transversely below the rail framework.

The construction of the ballast bed cleaning machine system according to the invention consists in that in addition to the cleaning sieve assigned to the ballast clearing chain provided with the transverse strand, a second cleaning sieve arranged upstream in the working direction and conveyor belts for reintroducing or distributing ballast and for removing the overburden are provided, whereby the ballast separating device between the two cleaning screens in the area immediately in front of the track lifting device or the clearing chain cross strand is provided for receiving the ballast accumulating from the second cleaning screen and thrown off the distribution conveyor belt onto the still unpurified bedding.

With a ballast bed cleaning machine system designed in this way, it is advantageously possible to divide the ballast to be cleaned between two cleaning sieves, as a result of which the cleaning performance can be increased significantly with the advantageous use of machines already in use. By arranging the ballast separating device, a simple intermediate storage of the ballast cleaned in the front, second screening plant on the uncleaned ballast bed remnant and then a simple and rapid separation of the upper, cleaned ballast layer in the area of the clearing chain cross strand can be carried out. With the brief separation of the upper, cleaned ballast layer, a bridging of the clearing chain cross strand below the track which ensures a bed gap is reliably ensured, and consequently a disadvantageous, repeated absorption by the clearing chain with subsequent cleaning can be avoided. Such a ballast bed cleaning machine system with this centrally arranged ballast separating device has the advantage that the two cleaning sieves can also be arranged at a great distance from one another, for example on two different machines. The intermediate storage of the cleaned ballast eliminates the need for a complex and particularly long conveyor belt arrangement for transporting and dropping the cleaned ballast behind the clearing chain cross strand.

Finally, a further advantageous embodiment of the machine system according to the invention is that a ballast flank excavation device is assigned to each of the second cleaning sieves and distribution conveyor belts for dropping the ballast cleaned by the cleaning sieve from the flank region into the middle area of the track - for recording the same through the ballast separation device - are provided. With In such a combination, the flank ballast can be transported in the shortest way via both flank excavation devices into the assigned cleaning screen and from there into the middle area of the track for intermediate storage. This completely relieves the subsequent clearing chain from the inclusion of the flank ballast and thus enables the bedding residue underneath the track to be dismantled more quickly.

The invention is described in more detail below with reference to two exemplary embodiments shown in the drawing.

• Fig. 1, 2 und 3 eine Seitenansicht, eine Drauf­sicht und einen Querschnitt eines ersten Ausführungs­beispieles einer erfindungsgemäß ausgebildeten Schotter-Trenn-Vorrichtung als Förderband mit Schotteraufnahme-Schild und Kehrbürste,
• Fig. 4, 5 und 6 eine Seitenansicht, eine Drauf­sicht und einen Querschnitt eines zweiten Ausführungs­beispieles einer erfindungsgemäß ausgebildeten Schot­ter-Trenn-Vorrichtung als Bodenplatte eines Troges mit Förderband,
• Fig. 7 und 8 eine schematische Seitenansicht und Draufsicht einer mit der Schotter-Trenn-Vorrichtung gemäß den Fig. 1, 2 und 3 des ersten Ausführungs­beispieles ausgestatteten, gleisverfahrbaren Schot­terbett-Reinigungsmaschinen-Anlage,
• Fig. 9 eine schematische Seitenansicht einer mit der Schotter-Trenn-Vorrichtung gemäß den Fig. 4,5 und 6 des zweiten Ausführungsbeispieles ausgestatteten, gleisverfahrbaren Schotterbett-Reinigungsmaschinen-­Anlage.

Show it:

• 1, 2 and 3 are a side view, a plan view and a cross section of a first embodiment of a ballast separation device designed according to the invention as a conveyor belt with ballast pick-up plate and sweeping brush,
• 4, 5 and 6 are a side view, a top view and a cross section of a second exemplary embodiment of a ballast separating device designed according to the invention as the base plate of a trough with a conveyor belt,
• 7 and 8 a schematic side view and top view of a track-movable ballast bed cleaning machine system equipped with the ballast separating device according to FIGS. 1, 2 and 3 of the first exemplary embodiment,
• 9 shows a schematic side view of a device equipped with the ballast separating device according to FIGS. 4, 5 and 6 of the second exemplary embodiment, Movable ballast bed cleaning machine system.

The first embodiment shown in FIGS. 1, 2 and 3 and FIGS. 7 and 8 is - as can be seen in FIGS. 7 and 8 - in connection with a track-moving ballast bed cleaning machine system 1, which is composed of an upstream flank -Cleaning machine 2 and a downstream ballast bed cleaning machine 3 connected to it. This has a machine frame 5 which is supported on carriages 4 spaced far apart from one another and which can be moved on a track 7 with the aid of a travel drive 6. Approximately in the middle between the two running gear 4, an endless ballast clearing chain 8, which can be inserted transversely below the track framework, and a track lifting device 9 are arranged. Immediately behind the ballast clearing chain 8 is a ballast cleaning screen 10 which can be vibrated via a drive and to which conveyor belts 11 and 12 are assigned for reintroducing the cleaned ballast or for removing the overburden. A central control device 14 is provided for controlling the various drives, in particular during the right of way in the working direction shown by an arrow 13. Directly above or above a transverse strand 15 of the ballast clearing chain 8 which is guided transversely under the track is a ballast separating device 16, described in more detail with reference to FIGS. 1, 2 and 3, for receiving an upper, cleaned, between the rails of the track 7 provided on a lower, still to be cleaned ballast layer 18 intermediate ballast layer 17. As can be seen in particular in FIG. 8, the ballast separating device 16 has an overall length which extends from the delivery point 19 arranged at least up to above the clearing chain transverse strand 15 to a receiving point 20 which is essentially immediately behind the front running gear 4.

The flank cleaning machine 2, which is arranged upstream in the working direction and can be moved on trolleys 22 with the aid of a travel drive 21, has an articulated machine frame 23, to which ballast flank excavation devices 24, 25 are connected on both longitudinal sides. These are each assigned a conveyor belt 26 for the further transport of the contaminated ballast picked up in the flank areas to a downstream ballast cleaning screen 27 which can be vibrated by a drive. Two ballast distribution conveyor belts 28 are arranged to discharge the cleaned ballast, in particular for the middle section of the track. A spoil conveyor belt 30 is provided to drop the spoil onto upstream bulk material loading wagons 29. In the rear end region of the ballast cleaning screen 27, a hopper 31 formed by the oversize grain shaft thereof is provided for receiving and forwarding the overburden transported by the overburden conveyor belt 12 to the upstream overburden conveyor belt 30. The ballast separating device 16 arranged on the ballast bed cleaning machine 3 is between the two cleaning sieves 10, 27 in the area immediately in front of the track lifting device 9 or the clearing chain cross strand 15 for receiving the accumulating from the second cleaning sieve 27 and from the distributor - Conveyor belt 28 on the still unpurified bedding or on the sleepers 32 of the track 7 between the rails 33 thrown gravel. The drives on the upstream flank cleaning machine are controlled via a central control device 34.

As can be seen from FIGS. 1 to 3, the ballast separating device 16 is for direct lowering between the continuously detected or raised rails 33 onto the threshold top 35 with the machine frame 5 of the cleaning machine 3 via a hydraulic height adjustment drive 36 connected and for separation or Division of the upper, intermediate layer of ballast 17 formed by the lower layer of ballast 18 to be cleaned. With its delivery point 19, the ballast separating device 16 - for delivering the picked up ballast to the exposed bed in the area immediately behind the transverse strand 15 - at least up to above the clearing chain transverse strand 15. The ballast separating device 16 consists of a Conveying in the machine longitudinal direction conveyor belt 37, a ballast pick-up plate 38 arranged upstream of this in the working direction and a sweeping brush 39. The sweeping brush 39 can be rotated about an axis 40 running transversely to the longitudinal direction of the machine and is height adjustable or lowerable via a drive 41. On each longitudinal side of the conveyor belt 37, a side boundary wall 42 is provided, essentially in the region of the inside of the rails, which extends in the longitudinal direction of the machine from the delivery point 19 to the receiving point 20. The side boundary walls 42 are connected in an articulated manner to the machine frame 5 via handlebar pairs 43. For continuous support on the two rails 33, two pairs of flange wheels 44, 45 are provided. The rear flanged wheel pair 45 in the working direction is slidably mounted in the transverse direction and connected to an expansion drive 46. A drive 47 of the conveyor belt 37 is designed for a rotational speed of the conveyor belt 37 that is the same as the working speed of the cleaning machine 3. The rear, somewhat wider flanged wheels of the flanged wheel pair 45 are height-adjustable by drives 48 in the two side boundary walls 42 of the ballast separating device 16. For vibrating the ballast separating device 16 vibrating vibrators 49 are provided in the machine longitudinal direction, which are arranged on cross bars connected to the handlebar pairs 43.

As can be seen in particular in FIG. 1, the ballast pick-up shield 38 is arranged somewhat inclined, the lower end of which is provided directly above the threshold upper side 35. The upper and rear end of the ballast pick-up plate 38 is located in the area of the pick-up point 20. For a machine without a track lifting device 9, the overall length of the ballast separating device 16 is preferably at least the length of a double sleeper division or approximately half Length of the chain cross strand 15, for example about 1.2 m, dimensioned accordingly. For a machine with a track lifting device 9, a length of preferably at least a length of six sleeper divisions, e.g. about 3.6 m, advantageous.

The mode of operation of the ballast separating device according to the invention for a ballast bed cleaning machine which can be moved along the track is described in more detail below with reference to FIGS. 1 to 3 and 7, 8.

After reaching the place of use of the ballast bed cleaning system 1 shown in FIGS. 7 and 8, the two ballast flank excavation devices 24, 25 and the ballast clearing chain 8 are lowered and their transverse strand 15 is inserted under the track. At the same time, the track 7 is gripped by the track lifting device 9 and raised so far that the transverse strand 15 can be inserted below the sleepers without problems or can be connected endlessly to the other parts of the clearing chain 8. To lower the ballast separating device 16, the drives 48 for lowering the rear flange wheel pair 45 are acted upon. The two drives 36 are then acted on until the flanged wheel pair 45 touches the rails 33. This is centered by the spreading drive 46 with the track play switched off. Subsequently, the ballast separation pre is lowered further direction 16 by continuing to act on the drives 36 until the front flanged gear pair 44 rests on the rails 33. As soon as all drives, in particular also the various conveyor belts 11, 12, 26, 28, 30 are put into operation, the two travel drives 6 and 21 continuously advance the work of the ballast bed cleaning machine system 1 in the direction of arrow 13. As with arrows (FIGS. 7 and 8), the contaminated ballast is picked up in both flank areas by the ballast flank excavation devices 24, 25 and transported into the ballast cleaning screen 27 with the aid of the conveyor belts 26. The contaminated ballast ballast remaining below the thresholds 32 is indicated by hatched lines and is referred to below as the lower ballast layer 18. The flank ballast cleaned in the cleaning sieve 27 is thrown over the two ballast distribution conveyor belts 28 as the upper ballast layer 17 between the rails 33 onto the middle area of the track and temporarily stored.

In the same operation, the subsequent ballast clearing chain 8 continuously takes up the ballast located below the central region of the track 7 or below the intermediate ballast layer 17 or the ballast layer 18 and is passed on for cleaning in the cleaning screen 10. The cleaned ballast becomes then dropped according to the dotted arrows (Fig. 7 and 8) in both flank areas. The overburden accumulated during cleaning is transported, as indicated by dash-dotted arrows, via the overburden conveyor belt 12 to the hopper 31 of the upstream cleaning sieve 27 and subsequently via the overburden conveyor belt 30 of the side cleaning machine 2 onto upstream bulk goods loading dare 29 dropped. During the continuous absorption of the lower ballast layer 18 by the transverse strand 15, a continuous absorption or separation of the upper ballast layer 17 from the lower ballast layer 18 takes place simultaneously through the ballast separating device 16. The ballast of the upper ballast layer 17 is Top 35 or shifted from the inclined ballast receiving plate 38 to the conveyor belt 37. The ballast 37 located on the conveyor belt 37, which is expediently moving at at least the same speed as the forward speed of the system 1, is thrown onto the exposed bed, bridging the gap in the bed created by the transverse strand 15 and continuously moving, directly behind the transverse strand 15 between the rails 33. The sweeping brush 39 rotating about the axis 40 supports the ballast transport in the area of the ballast pick-up plate 38. The two vibrators 49 cause the entire ballast separating device 16 to vibrate longitudinally and thus contribute to an improvement in the ballast displacement or to a reduction in the frictional resistance .

The second exemplary embodiment shown in FIGS. 4, 5 and 6 and 9 is - as can be seen in FIG. 9 - in connection with a continuously movable ballast bed cleaning machine system 50. This is made up of a train 52 that can be moved on a track 52 via running gears 51 Ballast bed cleaning machine 53 and with this coupled and upstream machine 55 supported on trolleys 54. A height-adjustable ballast clearing chain 56 and a height-adjustable track lifting device 57 are connected to a machine frame 58 between the chassis 51 of the ballast bed cleaning machine 53, which are spaced far apart from one another. The ballast clearing chain 56 is vibrated by a drive hard ballast cleaning screen 59 assigned. A ballast conveyor belt 60 and a tailings conveyor belt 61 are provided for the removal of the cleaned ballast or overburden. A travel drive 62 ensures continuous work advance in the working direction shown by an arrow 63. In the area of the front undercarriage 51 and a transverse run 64 of the ballast clearing chain 56 which can be inserted transversely under the track 52, a height-adjustable ballast separating device 65 is connected to the machine frame 58. This ballast separating device 65 is designed for separating or dividing an upper or intermediate layer of ballast 66 from a lower layer of ballast 67 to be cleaned and consists of a substantially flat and parallel to the track plane and up to the inside of the rails and adjacent to the threshold top, approximately plate-shaped separating body 68. This is formed by a toothed bottom plate 69 formed at the front end of a trough 70 provided with side boundary walls and open at the top and at the end faces. The upstream machine 55, which can be moved via a travel drive 71, has a ballast cleaning screen 72 to which overburden conveyor belts 73 are assigned.

As can be seen in particular in FIGS. 4 to 6, a conveyor belt 75 which is parallel to the machine longitudinal direction and to the base plate 69 and can be acted upon by a drive 74 is arranged in the trough 70 which is open at the front and at the top. This is connected to transverse gravel driving elements 76 which extend as far as the base plate 69. The base plate 69 of the ballast separating device 65 is delimited by side boundary walls 77 in the region of the inside of the rails. These are each connected to flange wheels 78 on the outside and closed additionally also attached to handlebar pairs 79 which are articulated on the machine frame 58. Hydraulic piston-cylinder drives 80 are provided for adjusting the height of the entire ballast separating device 65. Vibrators 81 are connected to the drives 80 for the application of vibration, in particular in the longitudinal direction of the track. The pick-up point located in the front end area or the delivery point arranged in the rear end area is designated with 82.83. As can be seen in particular in FIG. 6, in the lowered state, the bottom plate 69 of the trough 70 is located directly above the upper side 84 of the threshold 52 of the track 52 formed from thresholds 85 and rails 86.

The mode of operation of the second exemplary embodiment is described in more detail below with reference to FIGS. 4 to 6 and 9.

The ballast bed cleaning machine system 50 - according to FIG. 9 - works in the direction of the arrow 63, the ballast clearing chain 56 leading through the track 52 transversely under the track 52 during operation with continuous operation of the system 50 referred to as the lower ballast layer 67 entire ballast located below the track 52 in the direction of the small arrows to the ballast cleaning screen 59 promotes. A part of the cleaned ballast is thrown onto the two ballast bed flanks according to the dotted arrows on the ballast conveyor belt 60. The other part of the cleaned ballast together with the overburden accumulated during this cleaning (corresponds to the dash-dotted arrows) is transported via the overburden conveyor belt 61 to the upstream ballast cleaning sieve 72 and cleaned again there. The cleaned ballast occurring in the center on the underside of the ballast cleaning screen 72 is between the two rails 86 on the middle region of the track 52 to form the above-mentioned upper ballast layer 66. Finally, the overburden conveyor belt 73 of the upstream machine 55 transports the overburden of both cleaning screens 59 and 72 into the front end area of the system 50 and is dropped there onto bulk material loading wagons. In the front track area raised by the lifting device 57, the upper, cleaned ballast layer 66 is continuously separated from the lower, unpurified ballast layer 67 by the ballast separating device 65 with its base plate 69 just above the threshold upper side 84 at the right-of-way speed of Plant 50 is moved on. The front, toothed end of the base plate 69 causes a slight lifting of the ballast of the upper layer of ballast 66, which is then immediately transported by the entraining elements 76, which are moved in the longitudinal direction with the aid of the conveyor belt 75, to the rear delivery point 83 and there to the exposed bedding between the Rails falls. By arranging this delivery point 83 behind the transverse run 64, a reliable and complete bridging of the ballast from the upper ballast layer 66 via the bed gap created by the transverse run 64 is ensured.

In a further possible application of the system 50 according to the invention, the contaminated ballast picked up by the ballast clearing chain 56 can also be divided, part of the contaminated ballast being cleaned by the rear and the other part by the front cleaning sieve 59 or 72. The resulting spoil is then removed on separate conveyor belts.

Claims (11)

1.Device for a track-movable ballast bed cleaning machine, which is connected to this for a common continuous (non-stop) right of way and for receiving in the working direction in front of a clearing chain cross strand of the cleaning machine lying on the track or temporarily stored in the working direction and for Delivery of the same is formed on the exposed bedding, characterized in that the device (16; 65) for the immediate lowering between the continuously detected or raised rails onto the upper side of the sleepers (35; 84) with the machine frame of the cleaning machine (3; 53 ) connected via a height adjustment drive (36; 80) and for separating or dividing an upper or intermediate layer of ballast (17; 66) from a lower layer of ballast (18; 67) to be cleaned - during machine approach - and in their length in the machine longitudinal direction with their delivery point - for delivery of the up the volume of ballast removed from the exposed bed immediately behind the cross strand (15; 64) - at least up to above the clearing chain cross strand (15; 64). 2. Device according to claim 1, characterized in that the ballast separating device (16; 65) is designed to receive cleaned, temporarily stored ballast in the area in front of the clearing chain cross strand (15; 64). 3. Apparatus according to claim 1 or 2, characterized in that the ballast separation device (16; 65) for continuous entrainment or support on the Both rails of the track (7; 52), which can be raised by a track lifting device (9; 57) of the cleaning machine (3; 53), are formed with at least one flange wheel pair (44, 45; 78) or pair of rollers. 4. Apparatus according to claim 1, 2 or 3, characterized in that the ballast separating device (16; 65) has a length which is arranged from the delivery point (19; 83) arranged at least up to above the clearing chain transverse run to one essentially directly behind a trolley (4; 51) or in a not yet raised track area receiving point (20; 82) is sufficient, the overall length of the ballast separating device (16; 65) - for a machine without a track lifting device (9; 57) - preferably at least the length of a double sleeper division or approximately half the length of the chain transverse strand (15; 64), for example about 1.2 m, and - for a machine with a track lifting device (9; 57) - preferably at least the length of six sleeper divisions, e.g. about 3.6 m, is dimensioned accordingly. 5. Device according to one of claims 1 to 4, characterized in that the height-adjustable and on the rails (33) movable ballast separation device (16) from a - provided with a drive (47) for conveying in the machine longitudinal direction - conveyor belt (37), a ballast receiving plate (38) arranged upstream of this in the working direction, with its front end directly above the threshold upper side (35), and a - assigned to the ballast receiving plate (38) about an axis running transversely to the machine longitudinal direction ( 40) rotatable and by a drive (41) height adjustable or lowerable - sweeping brush (39). 6. Device according to one of claims 1 to 4, characterized in that the height adjustment and Ballast separating device (65) which can be moved on the rails and consists of a substantially plate-shaped separating body (68) which is essentially flat and runs parallel to the track plane and is arranged directly up to the inside of the rail and the upper side of the sleeper (84) ), which is preferably formed by the bottom plate (69), which is in particular toothed at the front end, of a trough (70) which is provided with side boundary walls (77) and is open at the top and on the end faces, in which a trough in the machine longitudinal direction and towards the bottom plate (69) A conveyor belt (75) with parallel gravel driving elements (76), extending from the delivery point (83) to the receiving point (82), is arranged in parallel and can be acted upon by a drive (74). 7. The device according to claim 5 or 6, characterized in that the height-adjustable and movable on the rails ballast separating device (16; 65) is at least equipped with side boundary walls (42), each arranged essentially up to the inside of the rail area which in the machine longitudinal direction from the delivery point (19) to the receiving point (20) or from the rear end of the conveyor belt (37) to the sweeping brush (39) forming the receiving point (20) or from one end to the other end of the base plate ( 69) are sufficient and are each connected to at least two wheel flange wheel pairs (44, 45) arranged one behind the other in the machine longitudinal direction and with height adjustment drives (36) on the machine frame (5) articulated handlebar pairs (43), preferably the two in Working direction rear flanged wheels (45) slidably mounted in the transverse direction and connected to an expansion drive (46). 8. The device according to claim 5 and 6, characterized in that the drive (47; 74) of the conveyor belt (37 and 75) for a working speed of the cleaning machine (3; 53) same rotational speed of the conveyor belt (37; 75) is trained. 9. Device according to one of claims 1 to 8, characterized in that the height-adjustable and movable on the rails ballast separation device (16; 65) with a preferably arranged on the conveyor belt (37; 75) or the side boundary walls vibrator (49 ; 81) - in particular for exposure to vibrations in the machine longitudinal direction - is connected. 10. Track-moving ballast bed cleaning machine system for picking up, cleaning and reintroducing the ballast ballast of railway tracks, with at least one machine frame supported on running gears, a ballast clearing chain that can be inserted transversely below the rail framework, a ballast cleaning screen and conveyor belts for ballast reintroduction and for the removal of the overburden, as well as with a device for receiving ballast temporarily stored on the ballast bed to be cleaned and for dispensing it onto the bed of the cleaning machine exposed by the clearing chain running transversely below the rail framework, in particular according to one of claims 1 to 9, characterized in that that in addition to the cleaning screen (10; 59) assigned to the ballast clearing chain (8; 56) provided with the transverse strand (15; 64), a second cleaning screen (27; 72) arranged upstream in the working direction, and conveyor belts (11; 60; 12; 61; 73) for gravel recovery o the -Distribution and for removal of the overburden are provided, the Ballast separating device (16; 65) between the two cleaning screens (10,27; 59,72) in the area immediately in front of the track lifting device (9; 57) or the clearing chain cross strand (15; 64) for receiving the from the second cleaning sieve (27; 72) and from the distribution conveyor belt (28) to the still unpurified bed gravel is provided. 11. Machine system according to claim 10, characterized in that the second cleaning screen (27) is assigned a ballast flank excavation device (24, 25) and distribution conveyor belts (28) for dropping the cleaned by the cleaning screen (27) Ballast from the flank area into the middle area of the track - for receiving it by the ballast separating device (16) - are provided.

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