EP0348585B1 - Arrangement of machines moving along a track for laying or removing sleepers - Google Patents

Abstract

A mobile machine arrangement for exchanging old track ties for new track ties comprises first and second machine units, a drive for propelling each machine unit independently along the track in an operating direction, an operator's cab for each machine unit, each machine unit comprising a bridge-like machine frame, a tie loading car coupled to the machine frame and undercarriages supporting the machine frame and the tie loading car on the track, a respective tie exchange device for laterally pulling old ties out of the track mounted on the machine frame of the leading machine unit and for laterally inserting new ties into the track mounted on the machine frame of the trailing machine unit, each tie exchange device comprising power-driven vertically and longitudinally adjustable tie gripping devices, a control for the tie exchange device mounted on each machine unit, and a tie transport arrangement mounted on the machine frame and tie loading car of each machine unit.

Description

The invention relates to a machine arrangement which can be moved on the track and has control devices for laterally pulling in or pulling out the cross sleepers of a track, in particular also individual sleepers or a group of sleepers, by means of an old sleepers pull-out device and a new sleepers pull-in device which follows in the working direction and which are each height-adjustable via drives. and have longitudinally adjustable gripping means and are attached to their own machine frame supported on the track by rail drives with travel drive.

According to AT-PS 359 537 by the same applicant or patent owner, a machine system is known with which the exchange of the cross sleepers of a track can be carried out completely with continuous work approach, i.e., when this system is used, all old sleepers are gradually changed by means of a continuous forward moving laying vehicle - with raised or spread rails - recorded and at the same time all new sleepers laid in a continuous sequence in the same operation. Such systems have proven themselves well for a complete replacement of all sleepers.

According to AT-PS 38o 7o8 by the same applicant or patent owner, a machine is known which has devices for threshold entry and exit - but in connection with a continuously movable ballast bed cleaning machine - with which in a continuous sequence - When the track is raised, the ballast is picked up, cleaned and reintroduced. These are two threshold change devices arranged between the bogie carriages at the ends and each connected to a longitudinal displacement drive and mounted on a horizontally running machine frame so as to be displaceable in the longitudinal direction of the machine. The two sleeper changing devices are only used in those areas where there is a side obstacle in the conveyor chain, eg a platform edge. The threshold fasteners are loosened and reattached before or after the machine is used. The two sleeper changing devices are thus only intended as auxiliary devices for occasional use in a ballast bed cleaning machine, the track having to be raised relatively high for the cleaning process. How and from which point the two sleeper change devices can be controlled or operated cannot be found in this literature reference, since there is no operator stand below the horizontally running machine frame or in the vicinity.

However, it is also known and common for many track sections, for example in the USA or Australia, that the sleepers are exchanged discontinuously or only in groups or only by exchanging every third or fourth crossbar of a track or only groups of sleepers lying next to one another. Such a partial sleeper exchange will then be repeated in a few years in order to be able to replace all the sleepers on a track. A system or machine combination for carrying out this actual partial-threshold replacement process, which corresponds to the combination of features in the preamble of claim 1, is known according to "Railway Track &Structures", November 1983, pages 22 to 24 and has, for example, up to twenty-four different ones Single machines or devices on which to carry out the work mentioned, but also for further additional work, such as sleeper milling, sleeper sawing and the like. Gravel plowing or regulating are provided. The sleepers that have been removed or, if necessary, sawed into parts beforehand are placed next to the track and picked up from there by the sleeper loading wagons. From the latter, the new thresholds are also fed or deposited at these points. The new or old sleepers can of course also be transported in or out at another time - at which the actual replacement of the sleepers takes place.

A relatively large number of devices for exchanging the transverse sleepers of a track are known, which essentially have a crane or jib-like frame which is equipped with threshold pliers which can be acted upon by a clamping drive. For example, in accordance with US Pat. No. 4,579,006o, such a threshold replacement device in the projecting area of a work vehicle has a pivotable crane which can be acted upon by drives and which has at its end a gripping device which can be actuated by hydraulic cylinder-piston arrangements and has a threshold clamp. With regard to the size of the jib crane, this construction is not very stable compared to the rest of the chassis of the work vehicle and, on the other hand, it is very complex to construct. In addition, the pulling in or pulling out of a single threshold is also more difficult to carry out because at least one of the two chassis axles with the weight of the vehicle comes into effect directly in the area in which the threshold exchange takes place. This version also has a double gripping device in order to grasp a new and an old threshold at the same time or to be able to carry out the removal of the old threshold and the insertion of the new threshold in two successive operations. In this way, however, the pulling-in and pulling-out processes become even more difficult for the operator, in particular, the one-sided heavy weight overload - due to the crane boom - of the vehicle does not guarantee an accurate, quick and trouble-free replacement. With this device, only individual sleepers can be exchanged, which are usually stored next to the track after the replacement. From there, any new thresholds that may have been supplied are recorded so that they can be installed individually. With this type of device, only a very limited performance when changing thresholds can be achieved. In addition, such small vehicles are usually not equipped with their own travel drive and can also only be moved at reduced speed on the track.

Another known machine for replacing individual cross sleepers of a track - according to US Pat. No. 4,418,625 - consists of a railroad car mounted on rail bogies, which is provided with an essentially horizontal machine frame. Provided on the machine frame on both longitudinal sides and between the two rail undercarriages is a gripping device which is arranged via a telescopically extendable and extendable boom and which has a clamping drive and is designed to be vertically and transversely displaceable via drives. With this known machine it is possible to pull out or insert individual cross sleepers from the left or right side of the machine frame. However, there is no observation or control facility for the two gripping devices on this machine, since neither an operator's seat nor an operator's cabin is arranged in the immediate area of the gripping devices. Obviously, these devices are remotely controlled by an operator standing next to the track. Very high performance and accuracy cannot be achieved with this machine either Due to the inadequate control or operation in connection with the section-wise approach of the machine. The arrangement of the two gripping devices or the telescopic boom below the essentially horizontal machine frame requires a very compact design, since the space between the track and the machine frame is very limited. These new or old sleepers lying next to the track are transported in and out by a system that can be moved by the track - which is usually arranged upstream or downstream of these individual sleepers or machines in the work direction - during this work process or at a later point in time .

It is also known - according to DE-AS 22 3o 2o2 - a single device provided with a travel drive for clearing the ballast from track beds. This device has plate-like broaching tools which are mounted on a cantilevered machine frame by means of drives which are adjustable in height and transverse. A push rod that is longitudinally displaceable via a drive is directly upstream of these broaching tools. With their help, a sleeper, the fasteners of which have been slightly loosened, can be moved in contact with the adjacent sleeper in the longitudinal direction of the track, which means that the ballast below the shifted sleeper can be moved towards the bedding flank using the broaching tool.

The object of the invention is to provide a machine of the type described in the introduction, with which, in particular, a partial sleeper replacement of a track, that is to say both pulling out the old sleepers and inserting the new sleepers, can be carried out more easily and safely and with higher work output.

This object is achieved with a machine arrangement of the type described in the introduction in that the two machine frames of the old sleeper pull-out device and the new sleeper pull-in device are elongated, bridge-shaped and cranked upward and are each connected to a separate sleeper loading carriage and two on Undercarriage-supported and independently movable machine units with their own travel drive, their own operator station and their own control device, and that each machine unit is provided with its own threshold feed and removal transport device on the bridge-shaped machine frame and on the frame of the sleeper loading carriage .

This surprisingly simple and yet advantageous new arrangement of a threshold pull-out or retraction device, which is easily controllable from the operator's field of view, each on its own machine frame equipped with a travel drive and control device - as a separate machine unit - is a particularly individual and rational use of work, also in the case of strongly changing order in the number of thresholds to be exchanged, achievable. With such machine units, which are relatively simple in construction, a very high level of work can be achieved when changing sleepers, while achieving an almost assembly-line workflow. Due to the separate design of the two machine units with their own travel drive, control device and operator station, their largely independent use is possible, so that a mutual adverse influence in the work performance and in the implementation of one machine unit due to less work performed by the second work unit - e.g. B. due to the occasional greater distance of the old sleepers to be exchanged - is avoidable. Since those removed by the old threshold pull-out device or by the new threshold pull-in device sleepers inserted into the track can be transported and transported continuously and completely unhindered over the track in the machine's longitudinal direction via the respective sleeper supply and removal device, even with the achievement of a high workload a time-consuming and labor-intensive and often difficult due to space reasons Interim storage of the old or new sleepers next to the processed track.

An advantageous development of the invention consists in the fact that each of the two machine units formed from the old sleeper pull-out device or the new sleeper pull-in device and a sleeper loading wagon is arranged at the level of an auxiliary rail for the sleeper closing provided for supporting the sleepers - or Ab transport device. With the help of these rails, a very efficient threshold transport, e.g. can be achieved by a rail-traveling gantry crane or the like, which can advantageously also be moved freely over the sleepers deposited on the loading platform of the sleeper loading wagon.

A particularly preferred and structurally simpler embodiment of a further development of the invention consists in that the two machine frames or sleeper changing machines, each coupled to the sleeper loading wagon, are arranged in mirror image to one another in the longitudinal direction of the track, with the old sleeper loading wagon starting in the working direction the machine arrangement and the new sleeper loading wagon forms the conclusion. This training is particularly structurally simple and the overall structure is very clear and easy to use. In addition to the high efficiency, the associated arrangement of the two are also Sleeper loading wagons at the beginning and at the end of the machine arrangement advantageously preclude overloading of the track gaps formed when the sleeper is changed by the heavy sleeper loading wagons.

A particularly advantageous embodiment of the invention is that between the old sleeper pull-out and the new sleeper pull-in device or the two machine units, a self-propelled ballast clearing machine with height and cross-adjustable, which has a machine frame with rail bogies and is equipped with its own travel drive Clearing organs for threshold compartments is arranged. This special design of the machine arrangement according to the invention enables a gravel clearing largely independent of the continuous work priority of the two independent machine units from the track gaps formed by the sleeper change. As a result, the work performed by the subsequent machine unit for introducing the new sleepers is significantly higher.

Another particularly advantageous development of the machine arrangement according to the invention is that the section of the sleeper transport device of each machine unit connected to the machine frame for changing sleeper from a sleeper conveyor belt directly adjoining the sleeper pull-out or pull-in device this subsequent vertical sleeper conveyor and another sleeper storage and conveyor belt is formed, and that the section of the sleeper loading device provided on the sleeper loading carriage is formed by a gantry crane movable in the longitudinal direction of the machine with a height-adjustable sleeper receiving device. Such a multi-part, Also relatively simple in construction, the transport device ensures trouble-free and rapid removal or removal. Transport of the old or new sleepers directly to or from the sleepers changing device to or from the loading wagon. The sleeper vertical conveyor enables a simple and problem-free overcoming of the height difference between the loading plateau of the loading wagons and the lower-lying sleeper conveyor belt adjoining the sleeper changing device.

According to another advantageous development of the invention, the gantry crane can be moved on auxiliary rails which, with the frame of the sleeper loading wagon and in the area of the sleeper storage and conveyor belt, also with the machine frame of the old sleeper insertion or new sleeper pull-out device of the two machine Units are connected, in the coupling area of the respective machine frame and sleeper loading carriage, rail intermediate pieces are arranged so as to be displaceable in the longitudinal direction. The arrangement of the auxiliary rails on the loading wagon as well as on the adjacent machine frame of the sleeper pull-out or pull-in device enables the gantry crane to be moved freely up to the sleeper storage and conveyor belt. This enables the transport of a large number of sleepers, which can be taken over in layers from the loading wagon or from the sleepers depositing and conveyor belt in a particularly advantageous manner within the scope of a single powerful working trip of the gantry crane. With the slidably mounted rail intermediate piece, an unhindered and trouble-free travel of the machine arrangement is ensured even in bends.

According to a particularly advantageous and expedient development of the invention, the old threshold pull-out or. the new sleeper retraction device of each machine unit is designed to be longitudinally displaceable in each case with respect to its machine frame and its sleeper transport device via its own drive. This longitudinally displaceable mounting of the sleeper pull-out or pull-in device enables in a particularly advantageous manner to achieve an increased work performance or a more uniform sleeper exchange, a continuous (non-stop) work approach of the entire machine arrangement - which, depending on the given working conditions, also can only be carried out over partial areas. In addition, considerable savings in energy costs can be achieved through the continuous approach of a large part of the machine and loading wagon mass.

According to a further advantageous embodiment of the invention, each machine frame of the old sleepers pull-out or. New sleeper pull-in device of both machine units consisting of an elongated, bridge-shaped and cranked-up support frame connected to the sleeper vertical conveyor, the sleeper storage and conveyor belt and the rail bogies, and a support frame arranged underneath it and connected to the sleeper pull-out or pull-in device as well as aggregate frame connected to the sleeper conveyor belt. This bridge-shaped support frame creates enough space or work space for the threshold pull-out and retraction device and is also suitable for absorbing relatively high tensile and compressive forces, so that it can be classified into a train set for the transfer run.

According to a further preferred embodiment of the invention, the unit frame connected to the longitudinally displaceable pull-in or pull-out device is articulated on the bridge-shaped support frame in the area of the threshold vertical conveyor and has at its opposite end a rail undercarriage supported on the track. Such a tiller-shaped design of the unit frame means that it is automatically centered with its rail undercarriage exactly on the track in bends, so that essentially the same working conditions are always present for pulling out or inserting the old or new sleeper. In addition, a relief of the two chassis connected to the machine frame from the machine weight can be achieved.

Finally, a further advantageous embodiment of the invention is that a work cabin with the central control device as the operator station is arranged on the assembly frame of the machine frame of each machine unit above the threshold conveyor belt. Such a working cabin essentially provides the operator with an unrestricted view of the pull-out or pull-in device and the subsequent sleeper storage and conveyor belt. In this case, all control processes in the work cabin can advantageously be controlled by the central control device.

The invention is described below with reference to an embodiment shown in the drawing.

• Fig. 1 einen vorderen Teil-Abschnitt in schematischer Seitenansicht einer erfindungsgemäß ausgebildeten, gleisverfahrbaren Maschinen-Anordnung zum seitlichen Ein- oder Ausziehen von Querschwellen eines Gleises - mit einer vorderen Maschinen-Einheit zum Schwellen-Ausziehen und einer nachfolgenden Schotterräum-Maschine zur Entfernung des Schotters im Schwellenfachbereich,
• Fig. 2 eine schematische Draufsicht auf die in Fig. 1 dargestellte Maschinen-Anordnung,
• Fig. 3 in Fortsetzung der Fig. 1 einen hinteren Teil-Abschnitt in schematischer Seitenansicht der erfindungsgemäß ausgebildeten Maschinen-Anordnung mit einer hinteren Maschinen-Einheit zum Einziehen von Schwellen und
• Fig. 4 eine schematische Draufsicht auf die Maschinen-Anordnung gemäß Fig. 3.

Show it:

• Fig. 1 shows a front part-section in a schematic side view of an inventive, track-movable machine arrangement for the lateral insertion or removal of cross sleepers of a track - with a front machine unit for sleeper extraction and a subsequent ballast clearing machine for removing the ballast in the threshold department,
• 2 shows a schematic top view of the machine arrangement shown in FIG. 1,
• 3, continuing from FIG. 1, a rear partial section in a schematic side view of the machine arrangement designed according to the invention with a rear machine unit for pulling sleepers and sleepers
• 4 shows a schematic top view of the machine arrangement according to FIG. 3.

1 and 2, the front part of a machine arrangement 1 is composed of an old sleeper pull-out device 2, a sleeper loading wagon 3 for receiving the old sleepers and a ballast clearing machine 4 and is on a track formed by cross sleepers 5 and rails 6 7 movable. The old sleeper pull-out device 2, which forms a separate machine unit 8 with the sleeper loading wagon 3, is designed with its own travel drive 9 and a brake arrangement 10 and has a machine frame 11 which is bridge-shaped and cranked upwards and which is arranged on the track via rail carriages 12 arranged at the ends 7 is movable. A central energy supply device 13 and a driving cabin 14 are provided on the rear part of the machine frame 11. In the front section of the bridge-shaped machine frame 11 and on a frame 16 of the old sleeper loading wagon 3 supported on running gears 15, a sleeper-down transport device 17 is provided. In the Röhe of a loading platform 18 provided for supporting the old sleepers, auxiliary rails 19 are fastened to the frame 16 of the loading vehicle 3 and to the machine frame 11 of the old sleepers pull-out device 2 of the machine unit 8, on which a gantry crane 20 has its own travel drive 21 Trolleys 22 is movable. One part of the threshold-down transport device 17 Gantry crane 20 is equipped with an operator cabin 24 having a control device 23 and a threshold receiving device 25 which is height-adjustable via drives. This is formed from two gripping rails 26 which are pivotably mounted parallel to one another and extend in the machine longitudinal direction and which can be pressed via drives 27 to the end faces of the old sleepers 28 resting on the loading plateau 18.

The section 29 of the sleeper-off transport device 17 connected to the machine frame 11 is formed from a sleeper conveyor belt 30 directly adjoining the sleeper pull-out device 2, a threshold vertical conveyor 31 adjoining this, and a further sleeper storage and conveyor belt 32 . In the coupling area of machine frame 11 and frame 16, a rail intermediate piece 33, which is mounted in the longitudinal direction, is provided in the area of the auxiliary rails 19. The machine frame 11 of the old sleeper pull-out device 2 is formed from the elongated and bridge-shaped carrier frame 34 connected to the vertical sleeper conveyor 31, the sleeper storage and conveyor belt 32 and the rail bogies 12 and with a support frame 34 arranged underneath it and to the sleeper pull-out device 2 and the threshold conveyor belt 30 connected unit frame 35. The unit frame 35 connected to the pull-out device 2 is articulated in the area of the threshold vertical conveyor 31 to the bridge-shaped support frame 34 and is supported at its opposite end by a rail carriage 36 on the track 7. A work cabin 37 with a central control device 38 as an operator station is arranged on the unit frame 35 above the sleeper conveyor belt 30. The threshold depositing and conveyor belt 32 provided for the accumulation of a number of old sleepers 28 is via its own drive 39 acted upon by the central control device 38. The threshold vertical conveyor 31 having a threshold ejection device 40 has chains connected to finger-like threshold supports, which can be set in rotation by a drive 41. The sleeper conveyor belt 30, which is used to support the individual old sleepers 28 pulled out of the track 7 by the sleeper pull-out device 2, can also be acted upon by its own drive 42. The old sleeper pull-out device 2 is connected to a tool frame 43 and flanged wheels 44, which can be moved longitudinally with the aid of a separate drive 45 along guide rails connected to the assembly frame 35. The old sleeper pull-out device 2 is rotatably connected to the tool frame 43 about a vertical axis 46, so that the pliers-like gripping means 47, which are adjustable and height-adjustable via drives, can also be used on the opposite machine longitudinal side or for the transfer travel in the area of the machine longitudinal axis (see dash-dotted lines in Fig. 2) can be centered. A drive 48 is provided to adjust the height of these pliers-like gripping means 47 designed to bear against the ends of the sleeper heads. Holding rollers 49, which are laterally pivotable and can be pressed onto the rails 6, are fastened to the unit frame 35.

The ballast clearing machine 4, which is arranged downstream of the machine unit 8 or the old sleeper pull-out device 2, has a machine frame 51, which is supported on the track 7 by trolleys 50, with an operator's cab 52 and a central control device 53. The front undercarriage 50 is connected to its own travel drive 54 and a brake arrangement 55. An energy center 56 is provided for supplying all drives. In a cranked area of the chassis frame 51 are 57,58 transverse and via drives Height-adjustable clearing members 59 are provided for clearing the sleeper compartments.

As can be seen in particular in FIG. 2, the pliers-like gripping means 47 of the threshold pull-out device 2, which can be provided with respect to one another via a drive 60, can be moved laterally with the aid of a transverse sliding drive 62 designed as a telescopic arrangement 61. The chains 64 of the vertical sleeper conveyor 31 already mentioned and rotatable about an axis 63 with the aid of the drive 41 are connected to horizontally projecting sleeper supports 65 for receiving the old sleepers 28 from the sleeper conveyor belt 30.

In FIG. 3, a continuation of FIG. 1 shows a second machine unit 67 connected to a new sleeper pull-in device 66 with its own travel drive 68, its own operator station 69 and its own control device 70. A bridge-shaped and cranked up machine frame 71 of the new sleeper pull-in device 66 is connected to its own sleeper loading carriage 72 - to form the independently movable machine unit 67 - in each case on the bridge-shaped machine frame 71 and on a frame 73 of the sleeper loading carriage 72 a separate threshold-to-transport device 74 is provided. To support the bridge-shaped machine frame 71, which is connected to a central energy supply device 75, rail carriages 76 are provided at the end, one of which is equipped with its own brake arrangement 77 in addition to the travel drive 68. The machine unit 67 has auxiliary rails 80 for a gantry crane for the sleepers-to-transport device 74 at the level of a loading platform 79 of the sleepers loading carriage 72 provided for supporting new sleepers 78. The portion connected to the machine frame 71 the sleeper-to-conveying device 74 of the machine unit 67 is formed from a sleeper conveyor belt 81 directly adjoining the new sleeper pull-in device 66, a threshold vertical conveyor 82 adjoining this, and a further sleeper storage and conveyor belt 83. The section of the sleeper transport device 74 provided on the sleeper loading carriage 72 consists of a gantry crane 84 which can be moved on the auxiliary rails 80 in the longitudinal direction of the machine and has a height-adjustable sleeper receiving device 85. The undercarriages 86 on the auxiliary rails 80, which are designed as double flanged wheels Movable gantry crane 84 has its own travel drive 87 and a control device 89 located in an operator's cabin 88.

The machine frame 71 of the machine unit 67 or the new sleeper pull-in device 66 is formed from an elongated, bridge-shaped and cranked upward support frame 90 connected to the sleeper vertical conveyor 82, the sleeper storage and conveyor belt 83 and the rail running gear 76 connected to an aggregate frame 91 arranged below the latter and connected to the sleeper retraction device 66 and the sleeper conveyor belt 81. The unit frame 91 connected to the sleeper retraction device 66 is articulated to the bridge-shaped support frame 90 in the area of the sleeper vertical conveyor 82 and has a rail carriage 92 supported on the track 7 at its opposite end. The gripping means 94 of the sleeper retraction device 66, which are height-adjustable via a drive 93 and are designed like pliers, are fastened on a tool frame 95 which can be moved longitudinally by means of a drive 96 and flange wheels 97 on guide rails 98 connected to the unit frame 91. The threshold conveyor belt 81 and the threshold storage and conveyor belt 83 is connected to a separate drive 99 and 100, respectively. In the coupling area between the machine frame 71 and the frame 73, a rail intermediate piece 101 is provided that is displaceable in the longitudinal direction of the machine. On the unit frame 91 of the machine frame 71 of the machine unit 67, a work cabin 102 with the central control device 70 as the operator station is arranged above the sleeper conveyor belt 81.

The overall view of the machine arrangement 1 shown in FIGS. 1 to 4 shows that each of the two bridge-shaped machine frames 11 and 71 of the old sleeper pull-out and the new sleeper pull-in devices 2 and 66 are each connected to a separate sleeper loading carriage 3 and 72 and form two machine units 8, 67 supported on trolleys 12, 76 and independently movable from one another with their own travel drive 9, 68, their own operator station 37, 69 and their own control device 38, 70. On the bridge-shaped machine frame 11 and 71 and on the frame 16 and 73 of the sleeper loading wagon 3 and 72 of each machine unit 8 and 67, a separate sleeper inward and outward transport device 17 and 74 is provided in each case. The two machine frames 11, 71 or sleeper changing machines 103 and 104, each coupled to the sleeper loading wagon 3.72, are arranged in mirror image to one another on the track 7 in the longitudinal direction of the track, with the old sleeper loading wagon 3 being the start of the machine arrangement 1 in the working direction and the new sleeper loading carriage 72 forms the end. Between the old sleeper pull-out and new sleeper pull-in devices 2.66 and the two machine units 8.67, the self-propelled ballast clearing machine 4 with the self-propelled drive 54 with the height and transverse adjustable clearing members 59 is arranged for the threshold compartment. The single ones Devices, conveyor belts, sleeper loading wagons and the like. Of the two machine units 8 and 67 are essentially of the same design.

The mode of operation of the machine arrangement 1 according to the invention for laterally pulling in or pulling out the transverse sleepers of a track is described in more detail below with reference to FIGS. 1 to 4.

The two machine units 8 and 67, which can be moved independently of one another, and the ballast clearing machine 4 are moved to the point of use, subject to the travel drives 9, 54 and 68, the sleeper loading carriage 72 being loaded with the required amount of new sleepers 78. As soon as the track section with the old sleepers 28 to be replaced has been reached, the sleeper pull-out device 2 is moved into the foremost end position, shown in full lines in FIG. While the actuation of the drives 60, 48, 62 detects the old sleeper 28 to be replaced in the sleeper head area by the gripping means or lifting tongs 47 and - optionally also in two or three working stages, each with an offset arrangement of the gripping means 47 on the threshold - pulled laterally out of the track 7 is started, under the action of the travel drives 9, 54 and 68, an independent, continuous (non-stop) work approach of the two machine units 8 and 67 and the ballast clearing machine 4 - in the direction of the arrows shown in FIGS. 1 and 3. This results in a gradual displacement of the old sleeper pull-out device 2 into the rear end position, shown with dash-dotted lines (FIG. 1), in which the old sleeper 28 has already been pulled out of the track 7. With the help of the drive 45, the old sleeper pull-out device 2 together with the gripping means 47 move the old sleeper 28 to the front end position and place the old sleeper 28 on the sleeper conveyor belt 30. Subsequently, the next old threshold 28 to be pulled out is gripped by the gripping means 47 and the work sequence described is started again. The deposited old sleeper 28 is transported with the aid of the drive 42 on the sleeper conveyor belt 30 to the sleeper vertical conveyor 31 and is lifted up from there to the sleeper ejection device 40. Through this the highly transported old sleeper 28 is pushed onto the sleeper storage and conveyor belt 32.

As soon as a layer of several adjacent old sleepers 28 has formed on the sleeper storage and conveyor belt 32, the gantry crane 20 is moved on the auxiliary rails 19 via the sleeper storage and conveyor belt 32. After the sleeper receiving device 25 has been lowered and the gripping rails 26 pressed onto the end faces, the old sleepers 28 located on the sleeper storage and conveyor belt 32 are detected, lifted up and transported to the old sleeper loading carriage 3 under the action of the travel drive 21 and there loaded onto the loading Plateau 18 deposited. Appropriately, depending on the track condition or the desired replacement method, a group of preferably two old sleepers 28 is pulled out of the track 7, a group of preferably three or more sleepers 5 remaining in the track 7 between these groups of old sleepers 28. The old sleepers 28 pulled from the track 7 are transported away unhindered via the sleepers transport device 17 during the continuous work advance of the entire machine unit 8. The old sleepers pull-out device 2 is controlled by an operator located in the work cabin or an operator's station with the help of the control device 38. As indicated in FIG. 2 with dash-dotted lines, the old-threshold pull-out device Just like the new sleeper retraction device 2 or 66, it can also be used on the opposite side of the machine for sleeper retraction or retraction. For this purpose, the old threshold off or Move the new sleeper pull-in device 2.66 into the rear end position, shown with dash-dotted lines, and pivoted about the vertical axis 46 (see dash-dotted arrows 105 in FIG. 2). The central position, also shown in dash-dotted lines, of the old-threshold pull-out or new-threshold pull-in device 2.66 is provided for the transfer travel.

During the continuous work advance of the front machine unit 8, the sleeper compartments in the area of the track gaps formed by the pulled out old sleepers 28 are cleared or leveled by the subsequent and independently movable ballast clearing machine 4 by the scoop-shaped clearing members 59 under the action of the drives 57, 58 be moved vertically and transversely. The track gaps are closed again by inserting the new sleepers 78 by the machine unit 67 which forms the end of the machine arrangement 1 and can be moved independently. For this purpose, with continuous (non-stop) work approach of the sleeper change machine 104 and the subsequent sleeper loading carriage 72, new sleeper 78 are transported to the sleeper depositing and conveyor belt 83 with the help of the portal crane 84 and deposited thereon. The foremost of these new sleepers 78 is picked up by the vertical sleeper conveyor 82 and placed on the underlying sleeper conveyor belt 81. There, the new sleeper 78 is gripped by the gripping means 94 of the sleeper pull-in device 66 and, with the aid of the drive 96, into the foremost end position of the new sleeper pull-in device, shown in broken lines 66 transported. After this end position has been reached, the detected new sleeper 78 is pushed into the track 7 by applying the appropriate vertical and transverse adjustment drives, this insertion process being facilitated by the clearing or leveling of the sleeper compartment previously carried out by the clearing members 59 of the ballast clearing machine 4. During this activity, due to the continuous right of way of the machine and unit frame 71, 91 in the working direction shown by an arrow 106 (FIG. 3), there is a relative displacement of the new sleeper retraction device 66 together with the tool frame 95 along the guide rails 98 into the rear , end position shown in Figure 3 with full lines. After reaching this end position, the insertion process of the previously detected new threshold 78 by the new threshold pull-in device 66 is ended. Via the control device 70, the operator in the work cabin 102 initiates the next sleeper insertion process by grasping the new sleeper 78, which has now been placed on the sleeper conveyor belt 81 again, by the gripping means 94 and pushing it into the track 7 in the manner described .

Claims (10)

1. A travelling on-track machine arrangement with control devices for the lateral placement or removal of the sleepers of a track, in particular individual sleepers or groups of sleepers, by means of an old-sleeper removing unit and a new-sleeper placing unit following in the working direction (2, 66), which each comprise gripping means (47, 94) adapted for vertical and longitudinal displacement by way of drives and which are each mounted on separate machine frames (11, 71) supported on the track by way of on-track undercarriages with travel drives, characterized in that the two machine frames (11, 71) of the old-sleeper removing unit and the new-sleeper placing unit (2, 66) are made elongate, bridge-shaped and upwardly offset and are each connected to their own sleeper loading wagon (3,72) and form two machine units (8,67) supported on undercarriages (12, 15, 76) and adapted to travel independently of one another and with their own travel drive (9, 68), their own operator's seat (37, 69) and their own control device (38, 70), and a separate sleeper delivery and take-away transport system (17, 74) is provided on the bridge-shaped machine frame (11, 71) and on the frame (16, 73) of the sleeper loading wagon (3, 72) of each machine unit (8, 67).
2. A machine arrangement according to Claim 1, characterized in that each of the two machine units (8, 67) formed by the old-sleeper removing unit (2) or the new-sleeper placing unit (66) and a sleeper loading wagon (3, 72) comprises auxiliary rails (19, 80) arranged level with a loading platform (18, 79) provided to accommodate sleepers for the sleeper delivery and take-away transport system (17, 74).
3. A machine arrangement according to Claim 1 or 2, characterized in that the two machine frames or sleeper-changing machines (103, 104) each coupled to the sleeper loading wagon (3, 72) are arranged in mirror-image symmetry to one another on the track in the longitudinal direction thereof, the old-sleeper loading wagon (3) forming the beginning and the new-sleeper placing unit (72) the end of the machine arrangement in the working direction thereof.
4. A machine arrangement according to one of Claims 1, 2 or 3, characterized in that a self-propelled ballast-clearing machine (4) comprising a machine frame (51) with on-track undercarriages (50) and equipped with its own travel drive (54) and with vertically and laterally displaceable clearing tools (59) is arranged between the old-sleeper removing unit and the new-sleeper placing unit (2, 66), i.e. between the two machine units (8, 67), for clearing sleeper-interval ballast.
5. A machine arrangement according to Claim 1, 2 or 3, characterized in that that section of the sleeper transport system (17, 74) of each sleeper-changing machine unit (8, 67) which is connected to the machine frame (11, 71) is formed by a sleeper conveyor belt (30, 81) directly adjoining the sleeper removing unit or sleeper placing unit (2, 66), by a vertical sleeper conveyor (31, 82) adjoining the sleeper conveyor belt (30, 81) and by another sleeper depositing conveyor belt (32, 83), and that section of the sleeper transport system (17, 74) travelling on the auxiliary rails (19, 80) which is provided on the sleeper loading wagon (3, 72) is formed by a gantry crane (20, 84) adapted to travel in the longitudinal direction of the machine with a vertically displaceable sleeper take-up unit (25, 85).
6. A machine arrangement according to Claim 5, characterized in that the gantry crane (20, 84) is adapted to travel on auxiliary rails (19, 80) which are fastened to the frame (16, 73) of the sleeper loading wagon (3, 72) and also - in the region of the sleeper depositing conveyor belt (32, 83) - to the machine frame (11, 71) of the old-sleeper placing unit and new-sleeper removing unit (2, 66) of the two machine units (8, 67), intermediate rail sections (33, 101) mounted for displacement in the longitudinal direction being arranged in the region of the coupling between the particular machine frame (11, 71) and the sleeper loading wagons (3, 72).
7. A machine arrangement according to one of Claims 1 to 6, characterized in that the old-sleeper removing unit or the new-sleeper placing unit (2, 66) of each machine unit (8, 67) is adapted for longitudinal displacement by its own drive (45, 96) relative to its machine frame (11, 71) and its sleeper transport system (17, 74).
8. A machine arrangement according to one of Claims 1 to 7, characterized in that each machine frame (11, 71) of the old-sleeper removing unit or the new-sleeper placing unit (2, 66) of both machine units (8, 67) is formed by an elongate, bridge-shaped and upwardly offset girder frame (34, 90) connected to the vertical sleeper conveyor (31, 82), to the sleeper depositing conveyor belt (32, 83) and to the on-track undercarriages (12, 76) and by a unit frame (35, 91) arranged beneath the girder frame and connected to the sleeper removing or placing unit (2, 66) and to the sleeper conveyor belt.
9. A machine arrangement according to Claim 8, characterized in that the unit frame (35, 91) connected to the longitudinally displaceable placing or removing unit (2, 66) is pivotally connected to the bridge-shaped girder frame (34, 90) in the region of the vertical sleeper conveyor (31, 82) and, at its opposite end, comprises an on-track undercarriage (36, 92) supported by the track.
10. A machine arrangement according to one of Claims 1 to 9, characterized in that an operator's cabin (37, 102) with the central control device (38, 70) in the form of an operator's seat is arranged on the unit frame (35, 91) of the machine frame (11, 71) of each machine unit (8, 67) above the sleeper conveyor belt (30, 81).

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