EP0379148A2 - Method of and device for constructing a ballastless superstructure - Google Patents

Abstract

In a method for constructing a ballastless superstructure in which a continuous concrete slab is applied to the formation, the track panel (rails with sleepers) is supported on the concrete slab, the track panel is adjusted if appropriate, and concrete is cast into the gap between the sleepers, above the concrete slab and between laterally raised limitations, it is proposed that the concrete slab is made integral with laterally raised concrete edge-beams which can be travelled over after hardening. Thus, lateral shuttering is dispensed with; automatic concrete finishers can also be used for filling the gaps between the sleepers.

Description

The invention relates to a method for producing a ballast-free track superstructure, wherein a continuous concrete slab is applied to the formation, the track yoke formed from rails and sleepers is supported on the concrete slab, and the threshold space above the concrete slab between the concrete edge beams of the concrete slab raised laterally with pouring Pouring concrete.

In a method also referred to as the "Rheda" system, the continuously flat concrete slab is first poured, then the track yoke (preassembled unit consisting of rails and sleepers) is transported by means of portal cranes supported on the side of the concrete slab and placed on the concrete slab. Then, if the concrete surface is not sufficiently precise, the track yoke is adjusted in height, inclination (eg transverse inclination in cams) and possibly lateral position, using hand winches or the like. Then a side formwork is installed on both side edges of the concrete slab and the threshold space is poured out. For this, the concrete from the side next to the concrete sub-slab on the ground, possibly on a neighboring track, transport and concrete feeding devices, to the threshold space. For this purpose, for example, a transport container is filled by a delivery mixer using a crane and then lifted over the track yoke to be cast and then the transport container is emptied. In order to ensure sufficient concrete strength and to reliably avoid voids, especially below the thresholds, the concrete has so far been redistributed manually and, if necessary, consolidated with hand-held vibrators. After the concrete has set, the side formwork must be removed again. From the magazine "Eisenbahningenieur" 1988, Issue 9, pages 438 - 447, it is known to have the large lateral protrusion of an underneath rolled concrete base layer of caterpillar or wheel-guided construction machines used for the production of the support plate and the laying and concreting of the track yoke. However, side formwork must still be provided, which must be assembled on the rolled concrete base layer before the pouring of the support plate, dismantled after the pouring concrete has hardened and cleaned if necessary for the next use.

From US-A-4 652 495 it is known, using the method mentioned at the outset, to provide the concrete slab with concrete edge beams of the same thickness as the concrete slab. The load-bearing capacity of these edge beams is therefore limited. For the track yoke adjustment, threaded spindles are provided which can be screwed into the sleepers and which are supported directly on the concrete slab.

From the magazine "Railway Track and Structures", April 1984, pages 24-27, it is known to place individual prefabricated support plate sections (precast floating track slabs) in a prepared bed of a tunnel to be lowered using a lowering device supported on both sides of the bed. Then the two rails, which are not connected by sleepers, are adjusted above these plates and at a distance from the plates. Subsequently, concrete slabs bridging this space are poured (second pour slabs), for which appropriate formwork is apparently required. Finally, the magazine "Railway Track and Structures", May 1968, pages 30 and 31, shows again a concrete slab with concrete edge beams in a track superstructure, without sleepers connecting the rails. Cross bars are provided for height adjustment of the rails, which are supported with their outer end on the respective concrete edge beam and with their inner end on the concrete slab. Both rails are adjusted separately from each other and fixed in the concrete slab by pouring the assigned bed.

The object of the invention is to simplify the method of the type mentioned.

This object is achieved in that the edge beams are designed in such a way that, after they have hardened, they can be loaded by track-laying machines which are supported on both edge beams. The production of the corresponding load-bearing edge beams does not mean a noticeably greater production outlay, since the concrete paver to be used for this purpose can only be modified accordingly. There is no need to install and remove side formwork. Nevertheless, the gap between the thresholds can be poured with the pouring concrete in a single step. The two edge bars are readily accessible for auxiliary devices for carrying out the subsequent method steps with the advantage of precise height and side alignment, so that on the one hand the need for a second track next to the track superstructure to be manufactured or the need for one Auxiliary lane is omitted. On the other hand, the subsequent process steps, in particular the pouring and hardening of the pouring concrete, can be carried out largely automatically. Due to their height, which clearly exceeds the thickness of the concrete slab, the edge beams are still sufficiently load-bearing, even with a relatively small width, so that the total width of the concrete slab including the edge beams can advantageously be small (tunnel construction!). On or next to the edge beams, transport devices for transporting the track yoke can also travel if necessary, so that the gantry cranes previously customary can possibly be omitted.

In a further development of the invention, it is possible to use a track yoke adjusting device which is supported on the two edge beams and is preferably movable on the rails of the track yoke. The Gleisjoch adjustment device is therefore supported on the two edge beams during adjustment, which ensures a secure footing and quick and precise side and height adjustment of the Gleisjoch. The threshold gap is unaffected by any parts of the adjustment device. This makes pouring out easier. Also, the unscrewing of the threaded spindles required according to US-A-4 652 495 after pouring out and shortly before complete hardening is omitted. Due to the adjustment of the track yoke with a more or less large clear distance between sleepers and the concrete slab, manufacturing inaccuracies of the sleepers are compensated. The adjustment accuracy of the rails, which is particularly necessary for high-speed trains, is easily achieved.

The Gleisjoch adjustment device could move with appropriate chassis between the adjustment locations with appropriate chassis on the edge beams; However, the method of the Gleisjoch adjusting device is particularly preferred on the rails, which are supported with their sleepers directly on the concrete slab before the adjustment and are fixed after the adjustment by means of quick-setting concrete that is introduced in places between the sleepers and the concrete slab. This measure ensures a particularly simple, mechanically robust construction of the adjustment device.

An automatic filling of the threshold interstices is achieved according to the invention for the first time by using a concrete paver which is supported on the edge beams, preferably movable on the edge beams, to fill in the threshold gaps. The previously practiced manual filling of concrete, which requires a lot of work, is now no longer necessary. The work accuracy, especially to maintain a predetermined installation height, is great. Maintaining a prescribed installation height (in particular 15 cm above the underside of the threshold ± 1 cm) is essential in order to maintain a sufficient distance from the rails on the one hand, and on the other hand to allow the space between the rails to be navigable.

To increase the daily output, it can be provided that a concrete paver is used which simultaneously fills several threshold gaps.

In a further embodiment of the method it is provided that a second layer of sound-absorbing lightweight concrete is applied to a first layer of concrete. This measure contributes to noise reduction. When using multiple threshold spaces at the same time filling concrete producer can simultaneously apply the first concrete layer in the first space and the second layer in the second space on the previously poured first layer.

In a further development of the invention, it is proposed that a vibrating device which is supported on the edge beams and compresses the concrete be used. This vibrating device can be part of a concrete paver already specified above.

It saves the hitherto usual spindles used in the sleeper body for height and inclination adjustment of the sleepers, if one uses the adjusting device according to the invention, which is supported on the edge beams, and proceeds in such a way that
After adjusting and before pouring, the track yoke is fixed by means of quick-setting concrete that is placed in places between the sleepers and the concrete slab.

The invention also relates to a device for adjusting the track yoke in the case of ballastless track superstructure. This is identified by a frame,
at least one undercarriage, preferably track undercarriage, which is attached to the frame in a height-adjustable manner between a lower end position and an upper end position, at least one track adjusting device held on the frame and support elements arranged on the frame, the frame in the upper end position of the at least one undercarriage over the Supports support elements on the ground, possibly the edge beams of the concrete slab, in the lower end position of the undercarriage, on the other hand, with its support elements lifted off the ground and thus movable. It enables a quick and precise adjustment of larger track yoke sections, whereby for the sake of simplicity the before and after the adjustment entire device on the tracks (in the state before the adjustment or after the adjustment) is moved from place of use to place of use. When adjusting, the edge beams can easily serve as a reference for the adjustment of the track yokes if the production is correspondingly precise.

The simple structure of the device is ensured by the fact that at least one support beam parallel to the threshold for two track wheels is attached to the frame so that it can be adjusted in height.

For quick and easy track yoke adjustment, it is proposed that at least one track crane, preferably with a trolley parallel to the threshold, be arranged on the frame.

It is further proposed that at least some of the support elements be provided with a foot part that overlaps one of the edge beam edges. It is particularly preferably provided that a section of the foot part projecting over the edge beams runs obliquely downwards in the direction of the formation. On the one hand, this configuration results in an effective transfer of transverse forces during the adjustment (parallel to the direction of the threshold); on the other hand, you get a kind of self-adjustment of the frame when lowering onto the edge beams.

The invention further relates to a device for pouring out the threshold spaces in the case of ballastless track construction, in particular for carrying out the method specified above. This device, which enables largely automatic filling of the threshold space, is characterized by a frame, at least one chassis arranged on the frame, at least one concrete frame arranged on the frame. Storage container, at least one concrete supply device connected to the container for pouring the concrete into the threshold space, optionally at least one concrete compacting device, preferably vibrating bottle device, which is attached to the frame in a height-adjustable manner between a lower end position and an upper end position, in which the lower end position of the concrete compacting device extends into the threshold space and is lifted out of the threshold space in the upper end position so that the frame can be moved.

The at least one undercarriage could be movable on the tracks in accordance with the track yoke adjusting device; In order not to place excessive strain on the track yoke, which has only been temporarily fixed, in particular when using the concrete compacting device, it is provided that at least one of the bogies can be moved on the edge beam, preferably in the form of a crawler track.

For precise dosing of the concrete, it is proposed that the concrete feed device has at least one filler box, which is attached to the frame in a height-adjustable manner between a lower end position and an upper end position, the filler box in the lower end position reaching into the threshold space and in the upper end position the threshold gap is lifted out.

In a first embodiment, which is characterized by particular simplicity, it is provided that
that the at least one filler box is designed without a box bottom. When pouring out the threshold space, the box side walls ensure that even if the concrete is fed at a high rate, it will only get into the threshold space and not, for example, onto the concrete sleepers or rails. Means appropriate level or time control ensures that exactly the required amount of concrete is supplied.

In an alternative embodiment of the invention it is provided that the filler box is designed with at least one closable delivery opening in the box bottom. This measure enables particularly precise concrete metering, since the concrete inflow can be started and interrupted immediately and without delay. Since the bottom of the box matches the level of the poured concrete, excess concrete can be retained in the box by closing the discharge opening.

A simple, robust construction is ensured in that the closure slide is designed for the simultaneous opening or closing of several dispensing openings.

A further development of the device according to the invention is characterized in that the concrete feed device comprises a plurality of independent concrete conveying devices distributed over the threshold length, preferably in the form of screw conveyors. This measure enables a precise distribution of the concrete over the entire threshold gap which is elongated in the threshold direction. It can also be taken into account by appropriate control of the individual conveying devices that, in the case of a lateral slope, the concrete flows to the lower side until it solidifies, particularly during the vibrating process. In order to compensate for this, less concrete is fed into the lower lying area from the outset by appropriately controlling the conveying devices.

In order to obtain sufficient independence of the individual conveying devices, in particular screw conveyors, when using a single concrete storage container, it is proposed that the concrete storage container have an uneven container bottom with the individual conveying devices, in particular screw conveyors, each with associated reductions.

In order to further reduce the transverse drift, it is proposed that the filler box be provided with a plurality of transverse plates running in the longitudinal direction of the track.

In order to be able to make do with a single filler box that extends over the entire length of the threshold space, it is proposed that the filler box be designed with recesses open downward in the box side walls to accommodate one of the two rails.

In order to ensure a uniform distribution and compaction of the concrete, it is proposed that the filler box be provided with vibrating elements, preferably vibrating bottles. These vibrating bottles preferably extend through the delivery opening in the bottom of the box.

In the first described embodiment with constantly open delivery openings, it is advantageously provided that the vibrating elements are rigidly attached to the filler box and that the filler box is provided with a vibrator drive.

In the alternative embodiment with a closable delivery opening, on the other hand, it is preferably provided that the vibrating elements, independently of the vibrating box, are attached to the frame in a height-adjustable manner between a lower end position and an upper end position, wherein the vibrating elements extend into the threshold gap in the lower end position and are lifted out of the threshold gap in the upper end position.

For surface smoothing, the device according to the invention can further be characterized by at least one pressure plate arrangement which is attached to the frame in a height-adjustable manner between a lower end position and an upper end position, the pressure plate arrangement in the lower end position resting on the surface of a concrete layer previously poured into the threshold space and in which upper end position is lifted up out of the threshold gap.

In order to avoid standing water, the concrete surface should either be inclined to one side, in particular in curves, or be similar to a gable roof. In order to obtain such profile shapes without manual reworking, it is proposed that the printing plate arrangement have two printing plate sections which are angularly adjustable relative to one another and / or relative to the frame. This pressure plate arrangement also eliminates other surface unevenness such as Stair-shaped formation due to the transverse sheets used or holes formed in the concrete from the extracted vibrating bottles.

The invention is explained below with reference to drawings of exemplary embodiments.

• Fig. 1 einen seitlichen Vertikalschnitt einer Gleisjoch-Justiereinrichtung (Schnitt nach Linie I-I in Fig. 3);
• Fig. 2 einen Schnitt nach Linie II-II in Fi. 1 im Zustand vor der Justierung (rechte Bildhälfte) und nach der Justierung (linke Bildhälfte);
• Fig. 3 einen Teilschnitt nach Linie III-III in Fig. 1 während der Justierarbeit;
• Fig. 4 einen seitlichen Vertikalschnitt eines Betonfertigers im Einsatz;
• Fig. 5 einen Schnitt nach Linie V-V in Fig. 4;
• Fig. 6 eine geschnittene Teilansicht entsprechend Fig. 4 einer weiteren Ausführungsform des Betonfer­tigers;
• Fig. 7 einen Detailschnitt nach Linie VII-VII in Fig. 6;
• Fig. 8 einen Schnitt nach Linie VIII-VIII in Fig. 4 in einer Gleiskurve, und
• Fig. 9 einen Schnitt entsprechend Fig. 8 bei gerader Gleisführung.

It shows:

• 1 shows a lateral vertical section of a track yoke adjusting device (section along line II in FIG. 3);
• Fig. 2 shows a section along line II-II in Fi. 1 in State before the adjustment (right half of the image) and after the adjustment (left half of the image);
• 3 shows a partial section along line III-III in FIG. 1 during the adjustment work;
• 4 shows a lateral vertical section of a concrete paver in use;
• 5 shows a section along line VV in Fig. 4.
• 6 is a partial sectional view corresponding to FIG. 4 of a further embodiment of the concrete paver;
• Fig. 7 is a detail section along line VII-VII in Fig. 6;
• Fig. 8 is a section along line VIII-VIII in Fig. 4 in a track curve, and
• Fig. 9 shows a section corresponding to Fig. 8 with a straight track.

In order to produce a ballast-free track superstructure ("Rheda" system), a continuous concrete slab 12 is first applied to the level 10 of the track substructure, which is now being produced integrally with the concrete edge beams 14 raised laterally. This is easily possible with conventional concrete pavers. The two edge beams 14 are passable after curing. They can easily be manufactured so precisely that they can serve as the basis for the adjustment of the track yoke 16 (pre-assembled unit from the two rails 18 and the sleepers 20). Furthermore, they limit a threshold gap 22 above the concrete slab 12 in the manner of a side formwork. This is after the adjustment of the Gleisjochs 16 poured with concrete in order to permanently connect the Gleisjoch to the concrete slab 12 and thus to the track substructure. As FIGS. 8 and 9 show, the surface 24 of the poured concrete layer 26 essentially closes with the surface 28 of the edge beams 14. The surface 24 lies just below the upper side 30 of the sleepers 20, on the one hand to maintain a sufficient distance from the rails 18 and on the other hand to allow the space between the rails to be driven over. The edge bar height must be determined accordingly.

The width of the edge beams 14 (in the direction parallel to the threshold direction) is determined such that there is sufficient load-bearing capacity for the concrete paver. Fig. 4-7 results.

After the casting and hardening of the concrete slab 12 together with the edge beams 14, a track yoke section is brought in and placed on the concrete slab 12. This can be done in the usual way via a gantry crane, which is supported laterally next to the edge beams 14 on the ground; if there is not enough space on the side, a transport device (not shown) can also be used, which is supported on the two edge beams 14 by means of corresponding undercarriages in accordance with the concrete paver.

The track yoke adjustment device 34 explained in FIGS. 1-3 is used for precise adjustment of the track yoke section 16 placed on it. This comprises a frame 36 with vertical supports 38 and horizontal supports 40, depending on the length one or more track bogies 42 and at least one track crane 44 for adjusting the rail yoke.

The track undercarriage 42 consists of a sleeper-parallel bearing beam 46, on which two track wheels 48 by means of corresponding bearings 50 are held at a mutual distance corresponding to the track spacing. The bearing beam 46 is height adjustable relative to the frame 36. In the exemplary embodiment shown, it can be seen that both ends of the bar embrace a vertical support 38 in the manner of a fork and in this way form a linear guide. The required lifting forces are each applied via a piston-cylinder arrangement 52 in the area of the two beam ends. Here, for example, the piston 54 is supported on an angle 56 fixed to the vertical support, and the cylinder on the bearing beam 46.

The track crane 44 comprises a trolley 58 which can be moved parallel to the threshold and which is supported on a corresponding horizontal parallel beam 40 'which corresponds to the threshold. A crane cable 60 leads from the trolley 58 to a crane lifting tool 62 (corresponding to a crane hook), which is designed like jaws or tongs in a manner not shown in order to be able to selectively grip the respective rail 18. A crane drive, also not shown, is provided in the trolley in order to be able to selectively raise or lower the rail 18 (double arrow A in FIG. 3). For lateral adjustment of the track yoke (double arrow B), the trolley 58 can be moved laterally, be it by a corresponding drive inside the trolley or, as indicated in FIGS. 1 and 3, by one acting on the rope 60 (or the trolley) Drive 64 with a laterally extending push or pull rod 66, which is supported on the frame 36 in a manner not shown.

The vertical support 38 are connected to each other at their lower end via a lower horizontal support 40˝. This is provided with several foot parts 68 distributed over its length, for flat support on the respective edge beam 14. One over the respective one Edge bar 14 inwardly projecting section 70 of the respective foot part 68 is angled obliquely downwards.

The operation of the device 34 described is as follows:

After a track yoke (control length 25m / often preassembled to a section up to 150m long) has been placed on the previously cast and hardened base plate together with edge beams 14 in a manner not shown, the device 34 is brought from its last place of use. For this purpose, the bearing beams 46 are each moved into a lower end position 46 'indicated on the right in FIG. 2, in which the track wheels 48 rest on the rails 18 and the frame 36 is accordingly lifted off the edge beams 14.

After the device 36 (by self-propulsion or pushed, for example by a separate transport vehicle) has reached the desired position above the track yoke 16 still lying on the plate 12 and to be adjusted, by actuating the piston-cylinder arrangement 52 the bearing beams 46 in an upper end position 46˝ raised, which is indicated in FIGS. 1, 3 and 2 left half. In this case, the frame 36 lowers onto the edge beams 14, the sections 70 running obliquely inwards and downwards providing for side adjustment of the frame 36 if necessary. Another function of the sections 70 is to ensure that the frame 36 stands securely so that transverse forces (arrow C in FIG. 3) occurring during the adjustment of the track yoke 16 are easily transferred into the edge beams 14. In Fig. 3, a transverse adjustment device 74 is indicated, which acts between a threshold 20 and the lower horizontal beam 40˝. This can in turn consist of a piston-cylinder arrangement, which is a centrally controlled, possibly automatic Track adjustment easily possible. Other drives such as spindle drives are also possible. Before the lateral adjustment, the track yoke 16 must of course be raised using the track crane 44 already described above. The height adjustment, possibly inclination adjustment, is carried out via this track crane 44.

After adjustment has been made, the track yoke 16 is temporarily fixed in this position with the help of rapidly setting concrete 78, which is placed in places between the sleepers 20 and the concrete slab 12 (see FIG. 2 left half of the figure).

After the concrete 78 has set, the track yoke 16 can be loaded so far that the device 34 can be moved on the track yoke. For this purpose, the bearing beams 46 are in their lower end position 46 'move relative to the frame 36, with the result that the frame 36 lifts off the edge bar 14.

In the case of continuous track superstructure manufacture using the method according to the invention, the device 34 is moved from the just-adjusted track yoke to the next track track yoke to be adjusted next, which has been placed on the concrete slab 12 in the meantime. If this new track yoke is not yet connected to the already adjusted track yoke and is therefore lower in its entire length than the one just adjusted, the device 34 has to overcome a corresponding rail step. One could think of providing the connection point between the two track gratings with two ramp-like rail attachment pieces, so that the device 34 can roll accordingly onto the lower track yoke. Due to the use of the height-adjustable track bogies, there is also another possibility. Since the device 34 will generally correspond in length to the track yoke length (eg 25 m long), at least three track bogies 42 are used, which are distributed over the length of the device. Before passing the junction of successive track yokes, the frame 34 can now be lowered slightly, in accordance with the following rail step. For this purpose, only the piston-cylinder arrangements 52 are to be actuated accordingly. Then the entire device 34 is moved so far into the area of the new track yoke that the foremost track undercarriage passes over this joint and is arranged above the rear rail end. In this position, the frame 34 is only supported by the remaining track undercarriages, so that the front track undercarriage accordingly has a clear distance from the rails of the new track yoke. This running gear is then moved into its lowest end position, in which it rests on the new rails 18.

In a corresponding manner, the following track bogies are lowered to the new track level after passing the joint.

As an alternative to the above-described mode of operation of the device 34, in which relatively short, separate track yoke sections are first deposited on the plate 12, then adjusted and connected to the rail track that has already been completed, the device 34 can also be readily used for adjusting very long, coherent track yoke sections (eg 150m length) can be used. This long track yoke section is connected to the rails of the track superstructure which have already been adjusted and fixed (in particular by welding the rails). With this rail length of the track yoke now to be adjusted, there is a corresponding rail curvature between the elevated connection point with the already completed tracks and the concrete slab 12 on which the track yoke is deposited.

The device 34 can therefore be moved from its last location to the next in the working direction without having to cope with any rail steps. It is moved over the rail connection area which is slightly S-shaped in the vertical plane, but this is not a problem.

Arrived at the new place of use, the bearing beams 46 are again moved into their upper end position on the frame 36, whereupon the frame 36 lowers on the edge beams 14 until finally the lower horizontal beams 40˝, instructed by the inclined sections 70, on the edge beams 14 Reach circulation. The rails are adjusted in the manner already described above.

After adjustment of the track yoke with subsequent fixation by rapidly setting concrete 78 in the area between the sleepers 20 and the throat formed between the edge beams 14 and the plate 12, the sleeper spaces 22 are then poured out with concrete. For this purpose, the device shown in FIGS. 4 and 5, simplified, for pouring out the threshold spaces in the case of ballastless track construction, which will be called concrete paver 80 in the following.

This comprises a machine frame 82 which can be moved on the two edge beams 14 by means of two trolleys 84 and 86. In principle, one could also think of track bogies; Due to the high total weight and the vibrating load, 14 traveling trolleys are preferable on the edge beams. One of the undercarriages, namely the left undercarriage 84 in FIG. 4, is designed as a driven crawler undercarriage, whereas that other 86 is merely formed by a pair of non-driven wheels.

A drive and control unit 88 (not shown in more detail) is attached to the frame 82 and controls the individual drives provided in the device in the desired manner.

The concrete paver 80 is designed to simultaneously fill two successive threshold spaces (between three successive thresholds 20a, b and c). The daily output is doubled accordingly. With a corresponding modification of the concrete paver 80, this can also be designed to simultaneously fill the threshold gap of more or less than two threshold gaps.

Accordingly, two concrete storage containers 90 are attached to the frame 82, each of which is assigned a filling box 92 which extends into the corresponding threshold gap. This box 92 consists of the two threshold-parallel side walls 94 and transverse walls (bulkheads) 96 oriented parallel to the longitudinal direction of the rail. Box 92 is open at the top. It is also largely open at the bottom. The box is closed towards the rail 18 only in the area of the two rails 18 overlapped by the box 92, so that contamination of the respective rail 18 with concrete is avoided. The two side walls 94 are provided with corresponding rectangular recesses 100 which are open towards the bottom. The two upper horizontal edges of the mutually opposite recesses 100 are connected to one another via a box bottom plate 101. Two transverse walls 96 a and b extend from the two side edges of the floor panel 101 and increasingly move away from one another downwards. The on the two transverse walls 96 a and b in Fig. 5 to the left and right respectively following transverse walls 96c and d approach in the downward direction of the nearest transverse wall 96a and b, respectively, so that in this way between walls 96c and a, or Walls 96 b and d receives funnel-like tapered, open spaces below 102 within the box 92. Accordingly, the transverse walls following the aforementioned transverse walls in FIG. 5 on the right are each inclined in pairs to one another, so that a total of five of these subspaces 102 are obtained. The lower opening serves as a discharge opening 104 for the concrete filled in the box 92.

In the exemplary embodiment according to FIGS. 4 and 5, a total of five dispensing openings 104 can optionally be closed with the aid of a single slide slide 106. This consists of a total of five plate-shaped flat slides 108, which are attached via side cheeks 110 to a common, horizontally extending push rod 112. For sliding guidance on the two side walls 94, the two side cheeks 110 assigned to each slide 108 can each be formed with guide rollers 114, which are guided displaceably in a corresponding lateral guide rail 116 of the respective side wall 94. With the aid of a drive engaging the push rod 112, in particular a hydraulic or pneumatic piston or cylinder unit 111 indicated in FIG. 5, all flat slides 108 can simultaneously open or close the five discharge openings 104 in the direction parallel to the threshold (double arrow D in FIG. 5) be moved.

The pouring of the pouring concrete 118 from the respective concrete storage container 90 into the associated filling box 92 takes place via a total of five screw conveyors 120 in the exemplary embodiment, in each case above one of the subspaces 102. For precise metering of the respective Concrete feed quantity, the screw conveyors 120 can be controlled independently of one another. For this purpose, a separate drive 124 indicated in FIG. 4 can be assigned to each screw conveyor 120.

In order to keep the influencing of the delivery rate of the adjacent conveyor screws 120 to one another to a minimum, and also to ensure that the storage container 90 is emptied as completely as possible, each conveyor screw 120 is located in a downwardly tapering depression 126 of the tank bottom. There is a gable roof-like ridge between adjacent depressions 126 so that practically all of the concrete reaches the conveying area of one of the screw conveyors 120.

By controlling the individual screw conveyors 120 appropriately, a uniform concrete layer thickness can be achieved. It can also be taken into account here that in the case of a lateral slope, the concrete flows to the lower side until it solidifies, especially during the vibrating process. To compensate for this, less concrete is added to the lower areas from the outset. The individual control of the conveyor screws 120 can take place via appropriate time control.

In order to achieve a uniform concrete distribution and compaction even in the more or less accessible areas below the sleepers 20, vibrating bottles 130 are provided. These pass through the discharge openings 104 and thus extend into the threshold gap 22 to be poured with concrete. In the exemplary embodiment shown, the vibrating bottles 130 are oriented vertically.

In order to be able to close the discharge openings 104, the vibrating surfaces 130 on the frame are in the vertical direction slidably mounted. 4, a threshold-parallel support beam 132 is indicated, to which the five vibrating surfaces 130 are attached, and which can be moved in the vertical direction with the aid of a piston-cylinder arrangement 134. Such an arrangement of vibrating bottles 130, bars 132 and piston-cylinder arrangement 134 is provided for each of the two filling boxes 92.

As will be explained in more detail below with reference to the second exemplary embodiment according to FIGS. 6 and 7, both boxes 92 are movably mounted on the frame 82 in the vertical direction so that they move from their lower end position shown in FIGS. 4 and 5 into an upper end position can be. In the lower end position, the underside of the box 92 lies approximately at the same level as the top 28 of the two edge beams 14 in accordance with the desired filling level of the cast concrete (upper limit of the threshold gap 22 to be poured). However, since the sleepers 20 actually protrude above this level with their upper side 30, there is a need to lift the boxes 92 together with the vibrating bottles 130 beyond the sleepers 20 as soon as the entire device for pouring out the next two threshold spaces by twice the threshold distance in the working direction (arrow E in Fig. 4) to be moved.

The concrete paver 80 can (but need not) be provided with one or two pressure plate arrangements 140 in order to reliably close the holes formed when the vibrating bottles 130 are pulled up, and in addition to ensure a predetermined cross-sectional profile (cut parallel to the sleepers). As indicated in FIG. 4, right half, there is each printing plate arrangement 140 from a pressure plate 142, to which an unbalance or vibrating drive 144 acts, and which in turn can be moved between the lower end position (= working position) shown and an upper end position, not shown, above the upper side 30 of the sleepers 20. For this purpose, the pressure plate 142 is vertically displaceably supported on the frame 82 by means of displacement elements 146 indicated in FIG. 4; a piston-cylinder unit 148 is articulated via a double arm lever 150 and a single lever 152 to the pressure plate 142, in order to be able to move the pressure plate 142 between the two end positions mentioned (double arrow F).

The pressure plate 142 can be inclined in a manner not shown in detail as a whole about an axis parallel to the rail in accordance with a desired angle of repose α (see FIG. 8). In this way, curve elevations can easily be taken into account.

The surface 154 of the concrete layer 26 between successive sleepers 20 is consequently substantially flat and inclined in accordance with the angle of repose α after the pressure plate 142 has been put on, the subsequent solidification due to the shaking movement of the pressure plate 142 and the subsequent lifting of the pressure plate 142. Manual smoothing may be necessary. required in the area of two downwardly open recesses 156 in the pressure plate 142 for receiving the two rails 18.

Due to the slope angle α, standing water on the concrete layer 26 in the curve area is avoided from the outset. In order to achieve the same even with a straight section, an approximately gable roof-like profile cross section of the concrete layer 26 is sought there according to FIG. 9. To achieve this, the pressure plate 142 is divided into two pressure plate sections 160 which are angularly adjustable relative to one another about a rail-parallel axis. 9, a joint 162 between the two sections 160 is indicated with a joint axis parallel to the rail. The gable roof angle β <180 ° can be set in a manner not shown, for example with the aid of corresponding piston-cylinder arrangements.

The concrete paver 80 acc. 4 and 5 are provided for the simultaneous processing of two threshold spaces. Accordingly, two jogger boxes 92 and two pressure plate assemblies 140 are provided, generally two or four or six or eight, etc., threshold gaps between the jogger boxes 92 and the pressure plate assemblies 140. In this way, the threshold gap pairs that are poured out simultaneously are also surface-smoothed at the same time.

6 and 7 show a 80 'designated modification of the concrete paver acc. 4 and 5. Components of the concrete paver 80 ', which correspond in function to those of the concrete paver 80, bear the same reference numerals, provided with a dash.

The difference is that now the two vibrating boxes 92 'have no closable delivery openings, but are always open at the bottom. This simplifies the structure, since now the vibrating bottles 130 'no longer have to be pulled up out of the dispensing openings in order to enable the dispensing openings to be closed. The vibrating bottles 130 'can now be rigidly connected to the vibrating box 92', for example by welding to the vertically oriented transverse walls 96 '. The respective recess 100 'for receiving the corresponding rail 18 is limited by the box bottom plate 101' and in Threshold parallel direction through two transverse walls 96 '. The vibrating drives for the bottles 130 of the paver 80 are therefore eliminated. For this, the vibrating box 92 'is provided as such with a vibrating or unbalanced drive 200. In order to allow the shaking movement relative to the frame 82 ', the respective box 92' is mounted on side rubber bearings 202 on side bearing frame 204; the latter are in turn mounted on the frame 82 'vertically movable so that they can be moved upwards (arrow G) with the aid of a lever linkage from the lower end position (working position) shown in FIGS. 6 and 7. A indicated in Fig. 6, on the frame 82 'about a threshold-parallel pivot axis pivotally mounted piston-cylinder assembly 208 is connected via a double arm lever 210 and a single lever 212 to the frame 204.

In order to be able to move to the next place of use (two threshold distances further) after filling and vibrating the concrete layer 22, the respective piston-cylinder arrangement is actuated, if necessary automatically, in such a way that the two vibrating boxes 92 'are raised to their upper end position. In this are the lower ends of the vibrating bottles 130 'above the threshold tops 30. In a corresponding manner, the piston-cylinder assemblies 148 of the two vibrating plate assemblies 140 are actuated.

With automatic control of the paver 80 or 80 ', the thresholds can be detected in their position in a manner not shown by proximity sensors or the like.

Claims (29)

1. A method for producing a ballastless track superstructure, wherein a continuous concrete slab (12) is applied to the subgrade (10), the track yoke (16) formed from rails (18) and sleepers (20) is supported on the concrete slab (12), and the threshold gap (22) above the concrete slab (12) between laterally raised concrete edge beams (14) of the concrete slab (12) is poured with pouring concrete, characterized in that the edge beams (14) are designed in such a way that they harden after they have hardened on both edge beams (14) supporting track construction machines (34; 80; 80 ') are resilient. 2. The method according to claim 1, characterized in that one is supported when adjusting on both edge beams (14), preferably on the rails of the track yoke (16) movable track yoke adjusting device (34). 3. The method according to claim 1 or 2, characterized characterized in that one uses a concrete paver (80) which is supported on the edge beam (14) and is preferably movable on the edge beam (14) to fill in the threshold spaces (22). 4. The method according to claim 3, characterized in that one uses a simultaneously several threshold spaces (22) filling concrete paver (80). 5. The method according to at least one of the preceding claims, characterized in that a second layer of sound-absorbing lightweight concrete is applied to a first layer of concrete. 6. The method according to at least one of the preceding claims, characterized in that one uses on the edge beam (14) supporting, the concrete compacting vibrating device (130; 140). 7. The method according to at least one of the preceding claims, characterized in that the track yoke (16) after adjustment and before pouring by means of in places between the sleepers (20) and the concrete slab (12) introduced, quickly setting concrete fixed. 8. The device (34) for adjusting the track yoke in the case of ballastless track superstructure, in particular for carrying out the method according to one of the preceding claims, characterized by
a frame (36),
at least one undercarriage, preferably track undercarriage (42), which is attached to the frame (36) in a height-adjustable manner between a lower end position and an upper end position,
- At least one on the frame (36) held track adjustment and
- Support elements arranged on the frame (36), the frame (36) being supported in the upper end position of the at least one undercarriage via the support elements on the ground, possibly the edge beam (14) of the concrete slab (12), in the lower end position the undercarriage, on the other hand, with its support elements is lifted off the ground and can thus be moved. 9. The device according to claim 8, characterized in that on the frame (36) at least one threshold-parallel bearing beam (46) for two track wheels (48) is mounted adjustable in height. 10. Apparatus according to claim 8 or 9, characterized in that at least one track crane (44), preferably with a trolley parallel to the sleeper (58), is arranged on the frame. 11. The device according to at least one of claims 8 to 10, characterized in that at least part of the support elements is provided with a foot part (68) overlapping one of the edge beam edges. 12. The apparatus according to claim 11, characterized in that a projecting over the edge beam (14) section (70) of the foot part (68) in the direction of the subgrade (10) extends obliquely downwards. 13. Device for pouring out the threshold spaces (22) in ballastless track construction, in particular for carrying out the method according to at least one of claims 1 to 8, characterized by
- a frame (82),
- at least one chassis (84, 86) arranged on the frame (82),
- at least one concrete storage container (90) arranged on the frame (82),
- at least one concrete feed device connected to the container (90) for filling the concrete into the threshold gap (22),
- if necessary, at least one concrete compacting device, preferably vibrating bottle device (130), which is attached to the frame (82) in a height-adjustable manner between a lower end position and an upper end position,
wherein in the lower end position of the concrete compacting device it extends into the threshold space (22) and in the upper end position is lifted out of the threshold space (22) so that the frame (82) can be moved. 14. The apparatus according to claim 13, characterized in that at least one of the undercarriages (84, 86), preferably in the form of a crawler undercarriage, can be moved on the edge beam (14). 15. The apparatus according to claim 13 or 14, characterized in that the concrete feed device has at least one filler box (92) which is mounted on the frame (82) between a lower end position and an upper end position adjustable in height, wherein the filler box (92) in the lower end position extends into the threshold gap (22) and is lifted out of the threshold gap (22) in the upper end position. 16. The apparatus according to claim 15, characterized in that the at least one filler box (92) is designed without a box bottom. 17. Device according to one of claims 13 to 15, characterized in that the filler box (92) is formed with at least one closable delivery opening (104) in the box bottom. 18. The apparatus according to claim 17, characterized in that the filler box (92) with a closure slide (106) for optionally opening or closing the delivery opening (104) is formed in the bottom of the box. 19. The apparatus according to claim 18, characterized in that the closure slide (106) is designed for the simultaneous opening or closing of a plurality of discharge openings (104). 20. The device according to at least one of claims 13 to 19, characterized in that the concrete supply device comprises a plurality of independent concrete conveying devices distributed over the threshold length, preferably in the form of screw conveyors (120). 21. The apparatus according to claim 20, characterized in that the concrete storage container (90) has an uneven container bottom with the individual conveying devices, in particular screw conveyors (120), respectively associated reductions (126). 22. The device according to at least one of claims 13 to 21, characterized in that the filler box (92; 92 ') is provided with a plurality of transverse sheets (96; 96') extending in the longitudinal direction of the track. 23. The device according to at least one of claims 15 to 21, characterized in that the filler box with recesses (100) open at the bottom is formed in the box side walls (94) for receiving one of the two rails (18). 24. The device according to at least one of claims 15 to 23, characterized in that the filler box (92; 92 ′) is provided with vibrating elements, preferably vibrating bottles (130; 130 ′). 25. The device according to claim 24, characterized in that the vibrating elements are rigidly attached to the filler box (92 ') and that the filler box (92') is provided with a vibrating drive (200). 26. The apparatus according to claim 24, characterized in that the vibrating elements, from the vibrating box (92) independently, are attached to the frame (82) in a height-adjustable manner between a lower end position and an upper end position, the vibrating elements in the lower end position reaching into the threshold space and are lifted out of the threshold gap (22) in the upper end position. 27. The device according to any one of claims 13 to 26, characterized by at least one pressure plate arrangement (140) which is mounted on the frame (82) between a lower end position and an upper end position adjustable in height, wherein the pressure plate arrangement (140) in the lower end position on the Surface of a concrete layer previously poured into the threshold gap (22) rests and is lifted upwards out of the threshold gap (22) in the upper end position. 28. The apparatus according to claim 23, characterized in that the pressure plate arrangement (140) has two pressure plate sections (160) which are angularly adjustable to each other and / or relative to the frame (82). 29. The device according to claim 8 or 9, characterized in that at least three over the length track bogies (84) distributed to the device are attached to the frame (82) so that they can be adjusted in height, which can possibly be moved into an intermediate position in order to cope with rail steps.

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