WO2019038000A1

WO2019038000A1 - Method and device for renewing sleepers of a track

Info

Publication number: WO2019038000A1
Application number: PCT/EP2018/069988
Authority: WO
Inventors: Manfred Brunninger
Original assignee: Plasser & Theurer Export Von Bahnbaumaschinen Gmbh
Priority date: 2017-08-25
Filing date: 2018-07-24
Publication date: 2019-02-28
Also published as: EP3673112B1; PL3673112T3; ES2914375T3; EP3673112A1; AT520387B1; AT520387A1

Abstract

The invention relates to a method for renewing sleepers (3) of a track (4), rails (13) being lifted from the sleepers (3) after rail-fastening means (2) have been loosened, and the sleepers (3) being replaced. According to the invention, the rail-fastening means are loosened such that the rail-fastening means (2) arranged in each case on either side next to a rail (13) are pushed apart by means of a spreading device (1) until a clear distance between the rail-fastening means (2) is greater than a base width of the rail. The invention further relates to a device for carrying out the method.

Description

Method and device for the renewal of sleepers of a track field of technology

[01] The invention relates to a method for renewing sleepers

Track, where rails are lifted from the thresholds and the sleepers replaced after a release of rail fastener. In addition, the invention relates to a device for carrying out the

Process.

State of the art

[02] Renewal procedures have long been known.

Often after the removal of old sleepers and before the installation of new sleepers gravel is taken, fed to a cleaning through a sieve and introduced back into the track bed. In optional work steps, old rails can also be replaced by new rails located upstream.

[03] A track renewal train for carrying out such a method is known from AT 316 614 B. This prior art has the disadvantage that rail fasteners must first be manually released from the old sleepers before they can be removed. This lengthens necessary track-stopping times and increases the cost of conversion work.

[0001] AT 15 070 U1 discloses a method for renewing sleepers of a track, wherein a separating cut is made on the rail fastening means by means of a high-pressure water jet in order to release it from an old threshold. In this method, however, large amounts of water are needed, which must be provided in a separate, or arranged on the track renewal water tank. In addition, a separation cut by a high-pressure water jet only in a very slow

Machine precedence. Another disadvantage is the introduction of loose Rail fastening parts in the ballast bed. These must be removed later by means of a metal separator from the ballast.

Summary of the invention

[05] The invention is based on the object, for a method and a

Device of the type mentioned to indicate an improvement over the prior art.

[06] According to the invention, this object is achieved by a method according to

Claim 1 and an apparatus according to claim 7. Dependent claims indicate advantageous embodiments of the invention.

[07] The inventive method provides that the release of the

Rail fastening means in such a way that by means of a

Spreading the each on both sides next to a rail rail fastening means are pushed so far apart until a clear distance between the rail fastening means is greater than a Schienenfußbreite. As a result, during a sleeper renewal, the rail fasteners can be automatically released in the assembly line process. Thus eliminates a previous manual release of the

Rail fasteners. This saves time and personnel costs.

In a further development of the method it is provided that the spreading device arranged on a rail vehicle by means of a

Positioning device is moved relative to a vehicle frame to press the spreading device against the apart

Position rail fasteners in position. As a result, an efficient use of the spreading device is ensured by rapid positioning relative to each rail fastening means to be loosened.

[09] Furthermore, it makes sense if the spreading device is held in position relative to the rail fastening means to be pressed apart, while the rail vehicle continues to move on the track. This will be a continuous right of way as

Track renewal train trained rail vehicle allows. An advantageous embodiment of the method provides that by means of a sensor detects the position of the rail fastening means and a

Sensor signal is transmitted to a control device and that by means of the control device, a spreading operation is activated in dependence of the sensor signal. The use of the sensor and the

Control device enables a machine detection of

Rail fastening means and an automated positioning of the spreading device with respect to the rail fastening means to be solved.

[1 1] In a further improvement of the method, a spreading device is guided along the associated rail for each of the two rails of the track. The release of the rail fastening means can be carried out particularly efficiently in the assembly line method in this way.

It makes sense if both spreading devices are operated synchronously.

The device according to the invention for carrying out one of said methods comprises a spreading device, on which two coupled

Spreading tools are arranged. Each spreading tool is designed for application to at least one rail fastening means. In this way, a simple structure of the spreading is given, wherein the respective spreading advantageously comprises exchangeable wearing parts. The respective expansion tool can extend in the rail longitudinal direction over several thresholds, so that it can be applied simultaneously to a plurality of rail fastening means. Then the corresponding rail fastening means are releasable with a spreading process.

In an advantageous embodiment of the device is provided that the spreading device two opposite to a common

Swivel axis comprises rotatable pivot arms and that at a lower end of the respective Schenkarms a spreading tool is arranged. This kinematic arrangement allows a compact design and an effective power transmission to the rail fastening means.

It is preferably between the swing arms a hydraulic

Drive arranged. The hydraulic drive offers a simple solution for a uniform and high power delivery during a spreading process. In addition, the hydraulic drive can be integrated into an already existing hydraulic system of a rail vehicle.

Advantageously, guiding means are arranged on the device in order to guide the spreading device along one of the two rails of the track. This facilitates positioning relative to the rail fasteners to be pushed apart.

[16] Furthermore, it is advantageous if on the device clamping means

are arranged, by means of which the spreading device during a

Spreading can be clamped to one of the two rails of the track. As a result, the spreading device is securely fixed in position and there is a both sides centered spreading or squeezing the

Rail fasteners instead.

[17] In an alternative embodiment of the device is provided that the respective spreading tool is formed as an expanding wedge, which is movable between the respective rail fastening means and the associated rail in a rail longitudinal direction. This wedge-shaped design represents a simple constructive variant to the

To press rail fastener from a rail foot.

Advantageously, the device comprises a positioning device, by means of which the spreading device relative to a vehicle frame of a

Rail vehicle is positionable. In use, the positioning device is attached, for example, to a track renewal train to move the spreader in the assembly line method step by step from threshold to threshold.

[19] An efficiency-enhancing development provides that the spreading device comprises a plurality of pairs of coupled spreading tools. In this way, several rail fasteners can be solved simultaneously. The pairs of coupled spreading tools can both

arranged side by side and in succession to increase the efficiency of the spreading device.

[20] For a further simplification of the device, it is advantageous if the pairs of coupled spreading tools are assigned a common drive. Brief description of the drawings

[21] The invention will now be described by way of example with reference to the accompanying drawings. It show in more schematic

presentation

Fig. 1 opposite rail fastening means positioned device

Fig. 2 spreading after completion of the spreading process

Fig. 3 side view of the spreading device

Fig. 4 spreading device with wedge-shaped spreading tools

Fig. 5 rail vehicle

Description of the embodiments

[22] A device shown in Fig. 1 comprises a spreading device 1 for pushing apart of rail fastening means 2, which are attached to sleepers 3 of a track 4. The spreading device 1 is over a

Positioning device 5 connected to a vehicle frame 6. In the illustrated variant, the spreading device 1 about a common pivot axis 7 rotatable pivot arms 8, at the lower end 9 each have a spreading tool 10 is arranged.

[23] The respective spreading tool 10 is advantageously designed as a wearing part and can be exchanged, for example via screw connections. In addition, the spreading tools 10 can be exchanged in order to adapt to different rail fastening means 2. For example, other formations of the spreading tools 10 are provided as in clamped fasteners in screw fasteners. Optionally, guide means 1 1 are provided to the

Spreading device 1 along the associated rail 13 to lead.

[24] At an upper end between the pivot arms 8, a hydraulic drive 12 is arranged, which presses the two pivot arms 8 apart. Alternatively, an electric drive can be arranged with a spindle or an eccentric. In order to reach the starting position (FIG. 1), the spreading device 1 is aligned centered over a rail 13 by means of the positioning device 5. In this case, the spreading tools 10 positioned on both sides between the rail 13 and a rail fastening means 2.

[25] In addition, a sensor 14 for detecting the rail fastening means 2 is arranged. This transmits a sensor signal to a control device 15. Depending on the sensor signal, the control device 15 activates a spreading process. In this case, first of all the positioning device 5 is actuated for the automatic positioning of the spreading device 1. Then, a control of the hydraulic drive 12 of the

Spreading device 1.

[26] Fig. 2 shows the spreading device 1 immediately after completion of a

Spreizvorgangs. By means of the hydraulic drive 12 are the

Swing arms 8 and the spreading tools 10 pressed apart. The rail fastening means 2 plastically deformed in this way have a clear distance from each other which is greater than the width of a rail foot 16 of the corresponding rail 13. As a result, the rail 13 can be raised in the next method step and placed next to the sleepers 3.

[27] In Fig. 3, the spreading device 1 is shown in side view. In this case, clamping means 18 are arranged on both sides next to the spreading device 17 in a rail longitudinal direction 17. These hold the spreading device 1 against the rails 13 securely in position, so that the rail fastening means 2 can be pressed apart centered. The clamping means 18 are formed, for example, pliers-shaped and hydraulically or electrically driven. A control takes place via the control device 15 as soon as the spreading device 1 is in the starting position.

[28] FIG. 4 shows an alternative variant of the spreading device 1. Here, the spreading tools 10 are formed as expanding wedges. To disengage the rail fastening means 2, the expanding wedges in

Rail longitudinal direction 17 between the corresponding

Rail fastener 2 and the rail 13 is pushed.

This is easily done by a machine approach 19 of a rail vehicle 20 to which the spreading device 1 is attached. [29] Fig. 5 shows a rail vehicle 20 with a mounted device. On the vehicle frame 6, the positioning device 5 is attached. To enable a continuous machine approach 19, includes the

Positioning device 5, in particular a longitudinal guide 21, along which the spreading device 1 a relative movement 22 relative to the

Vehicle frame 6 executes. In this way, the spreading device 1 remains in position with respect to the apart from each other to be pressed rail fastening means 2 in position until the spreading process is completed. Thereafter, a rapid forward movement to the next threshold 3. The spreading device 1 thus operates in a timed mode of operation, while the

Rail vehicle 20 continuously moved forward.

[30] The spreading device 1 is connected to a hydraulic system 24 of the rail vehicle 20 via a flexible supply line 23. Alternatively, an existing electrical system can be used if the

Spreading device 1 has an electric drive.

[31] In this example, the sensor 14 is in the front of the

Rail vehicle 20 is arranged. In addition, a Wegmesssensor 25 is provided. Both sensor signals are supplied to the control device 15 in order to determine the positions of the spreading device 1 to be controlled. The necessary geometric relationships between the sensors 14, 25 and the positioning device 5 or the spreading device 1 are stored in the control device 15.

In a simple process with slow machine feed 19, the spreading device 1 between the two rails 13 of the track 4 can be moved back and forth to solve with a pair of coupled spreading tools 10 all rail fasteners 2.

For a faster operation, it makes sense if each rail 13 is assigned a separate spreading device 1. Alternatively, a common spreading device 1 coupled with two pairs

Spreading tools 10 may be provided. Also several consecutively arranged spreading devices 1 increases the number dissolved

Rail fastener 2 per unit time. The same applies to several successively arranged spreading tools 10 of a common spreading device. 1

Claims

claims

1 . Method for renewing sleepers (3) of a track (4), wherein rails (13) are lifted off the sleepers (3) and the sleepers (3) are replaced after loosening of rail fastening means (2)

geken nzeich net that the release of the rail fastening means takes place in such a way that by means of a spreading (1) on both sides next to a rail (13) arranged rail fastening means (2) are pushed apart until a clear distance between the rail fastening means (2 ) is greater than a rail foot width.

2. The method of claim 1, dadu rch geken nzeich net that on a rail vehicle (20) arranged spreading device (1) by means of a

Positioning device (5) relative to a vehicle frame (6) is moved to the spreading device (1) opposite to be pressed apart

Rail fastening means (2) to position.

3. The method of claim 2, dadu rch geken nzeich net that the

Spreading device (1) opposite to be pressed apart

Rail fastener (2) is held in position while the

Rail vehicle (20) on the track (4) moved on.

4. The method according to one of claims 1 to 3, dadu rch geken nzeichnet, by means of a sensor (14) detects the position of the rail fastening means (2) and a sensor signal to a control device (15) is transmitted and that by means of the control device (15) Spreading (1) in response to the sensor signal (14) is activated.

5. The method according to any one of claims 1 to 4, dadu rch gekennzeich net, that for each of the two rails (13) of the track (4) a spreading device (1) along the associated rail (13) is guided.

6. The method of claim 5, dadu rch geken nzeich net that the two spreading devices (1) are operated synchronously.

7. A device for carrying out a method according to one of claims 1 to 6, dadu rch geken nzeich net that the device comprises a spreading device (1) and that on the spreading device (1) has two coupled spreading tools

(10) are arranged, each for an application to at least one

Rail fastening means (2) are formed.

8. The device according to claim 7, dadu rch gekennzeich net, that the

Spreading device (1) comprises two opposite, about a common pivot axis (7) rotatable pivot arms (8) and that at a lower end (9) of the respective Schenkarms (8), a spreading tool (10) is arranged.

9. Apparatus according to claim 8, dadu rch gekennzeich net, that between the pivot arms (8), a hydraulic drive (12) is arranged.

10. Device according to one of claims 7 to 9, dadu rch gekennzeich net, that on the device guide means (1 1) are arranged to the

Spreading device along one of the two rails (13) of the track (4) to lead.

1 1. Device according to one of claims 7 to 10, dad urch

geken nzeich net, that on the device clamping means (18) are arranged, by means of which the spreading device (1) during a spreading on one of the two rails (13) of the track (4) can be clamped.

12. The device according to claim 7, dadu rch gekennzeich net, that the respective spreading tool (10) is designed as an expanding wedge, which between the respective rail fastening means (2) and the associated rail (13) in a rail longitudinal direction (17) is movable.

13. Device according to one of claims 7 to 12, dad urch

that the device comprises a positioning device (5), by means of which the spreading device (1) can be positioned relative to a vehicle frame (6) of a rail vehicle (20).

14. Device according to one of claims 7 to 13, characterized

characterized in that the spreading device (1) comprises a plurality of pairs of coupled spreading tools (10).

15. The apparatus according to claim 14, characterized in that the pairs of coupled spreading tools (10) is associated with a common drive.