Method for track renewal
In a method for renewing a track (2) and cleaning a ballast bed (3), the old track (2) is lifted off the ballast bed in sections as a track panel (15), transported forward in a working direction (4) and deposited on track panel wagons (8). The exposed ballast bed (3), forming a renewal gap (17), is cleaned by a cleaning machine (11), spoil (32) accruing in the process is transported forward underneath the track panels (15) deposited on the track panel wagons (8), and stored in hopper cars (10). New rails (29), pre-deposited underneath new sleepers (27) positioned on sleeper wagons (14), are pulled forward into the renewal gap (17) by the cleaning machine (11) and deposited on the cleaned ballast bed (3). The new sleepers (27) are laid down on the cleaned ballast bed and connected to the new rails (29) lifted off the ballast bed (3).
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This application is the National Stage of PCT/EP2016/000024 filed on Jan. 8, 2016, which claims priority under 35 U.S.C. § 119 of Austrian Application No. A 55/2015 filed on Feb. 6, 2015, the disclosures of which are incorporated by reference. The international application under PCT article 21(2) was not published in English.
The invention relates to a method for renewing a track and cleaning a ballast bed.
According to AT 368 217, a method for rehabilitation of a track subgrade is known in which, by means of a bridge-like first track maintenance vehicle, a track panel is lifted off a ballast bed and temporarily removed in the longitudinal direction of the track. In the renewal gap thus created, the old ballast bed is excavated by means of a second vehicle. Thereafter—again by means of the first vehicle—a formation protection layer as well as new ballast is introduced into the renewal gap. Upon this new bedding, the old track panel is laid or reinstalled, the panel having been stored on the first vehicle, suspended from the frame of the same, during the bedding rehabilitation process.
A track maintenance machine for partial renewal of a track is known from CH 657 649, said machine consisting of a carrying beam supported at its ends on two on-track undercarriages. This beam is placed above a track panel to be removed, which is lifted up and fixed to the beam. Then the machine is moved on crawler tracks along the track renewal gap, during which the old ballast bed is removed by means of a clearing chain provided at the end of the beam, and new ballast is brought in. Upon the latter, the old track panel is subsequently laid down again.
It is the object of the present invention to provide a method of the kind mentioned at the beginning with which a simplified complete track renewal is possible.
According to the invention, this object is achieved with a method of the specified kind by way of the features cited in the characterizing part of the main claim.
A method of this kind offers the advantage that a complete track renewal is possible which includes transporting away the old rails and, taking place parallel thereto, bringing on new rails. In an advantageous way, this renders unnecessary two additional track closures required for a removal of the old rails and a delivery of new rails which, as a rule, are pre-deposited laterally next to the track to be renewed.
Additional advantages of the invention become apparent from the dependent claim and the drawing description.
The invention will be described in more detail below with reference to an embodiment represented in the drawing in which
An installation 1, visible in the drawings, serves for renewal of a track 2 and for cleaning of a ballast bed 3 and consists essentially of a number of track maintenance vehicles, arranged one following the other in the longitudinal direction of the track, which are mobile in a working direction 4 on on-track undercarriages 5 and, in part, additionally on crawler tracks 6. The front section of the installation 1, shown in
The rear section of the installation 1, visible in
The method of track renewal according to the invention starts with the removal of the old track 2 in sections, in which a track panel 15 is in each case lifted off the ballast bed 3 by means of the panel removing machine 7, thus creating a renewal gap 17, and is transported towards the front in the working direction 4 with the aid of a gantry crane 16 (
The cleaning machine 11, following in the renewal gap 17 and also moving on lowered crawler tracks 6, takes up the ballast bed 3 by means of a clearing chain 18 and cleans it in a screening plant 19. The cleaned ballast 20 is discharged right away again via a chute 21 and graded behind the rear crawler track 6. Additionally, there is also the alternative possibility to introduce new ballast, as needed, by way of a conveyor belt 22 via the chute 21 into the renewal gap 17, and to grade the same.
As can be seen in
The forward motions of the panel removing machine 7 and the trailing cleaning machine 11 must be coordinated with one another in such a manner that a continuous transfer of the spoil 32 to a rear end 33 of the conveyor belt road 23 is possible.
In the rear section of the installation 1, shown in
On the sleeper wagons 14, these new rails 29 are gripped in pairs by means of a gripping device 30 with the aid of the gantry crane 28 and transported forward in the working direction 4 up to a front transfer position 31. In this position, the free ends of the new rails 29 are received by suitable rail tongs 34—fastened to the cleaning machine 11—and pulled forward into the renewal gap 17 and then temporarily deposited on the cleaned ballast 20 of the ballast bed 3. After the new sleepers have been placed, the pre-deposited new rails 29 are lifted from the ballast bed 3, spread onto the new sleepers 27 and connected to the same to form the renewed track 2.
Claims
1. A method for renewing a track and cleaning a ballast bed (3), comprising the following steps:
- a) lifting an old track off the ballast bed in sections as a track panel is, transported forward in a working direction and deposited on track panel wagons,
- b) cleaning the exposed ballast bed, forming a renewal gap, by a cleaning machine, spoil accruing in the process is transported forward underneath the track panels deposited on the track panel wagons (8), and stored in hopper cars,
- c) pulling new rails, pre-deposited underneath new sleepers positioned on sleeper wagons, forward into the renewal gap by the cleaning machine and deposited on the cleaned ballast bed, and
- d) laying down the new sleepers on the cleaned ballast bed and connected to the new rails lifted off the ballast bed.
2. The method according to claim 1 wherein, by means of a gantry crane provided for transport of the new sleepers in the working direction, the new rails are pulled in pairs into a front transfer position for being received by the cleaning machine.
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- International Search Report of PCT/EP2016/000024, dated Apr. 20, 2016.
Type: Grant
Filed: Jan 8, 2016
Date of Patent: Aug 20, 2019
Patent Publication Number: 20180010303
Assignee: Plasser & Theurer Export von Bahnbaumaschinen Gesellschaft m.b.H. (Vienna)
Inventor: Manfred Brunninger (Altenberg)
Primary Examiner: Jason C Smith
Application Number: 15/547,176
International Classification: E01B 27/04 (20060101); E01B 27/00 (20060101); E01B 27/08 (20060101); E01B 27/11 (20060101); E01B 29/02 (20060101); E01B 27/02 (20060101); E01B 29/05 (20060101);