EP2390414A2 - Method for mounting a railway track to be anchored to a concrete bed and device for implementing same - Google Patents

Abstract

The method involves fixing Sonneville type low vibration track blocks with rails (R1-R3), and storing spacing bars (15) in front of a carriage of a railway track mounting and positioning structure. A formed railway track (T0) is set in its definite position by the carriage. A track portion is maintained till struts are installed and permit leaving of the structure from a track sector and continuation of progression of the structure. The block fixation, bar storage, track setting, track portion maintenance are carried out in an iterative manner till completion of a current yard (3). An independent claim is also included for a device for mounting and positioning a railway track for anchoring the railway track in a concrete bed, comprising a low-platform wagon.

Description

Field of the invention

The method consists in operating the mechanized assembly of a railway intended to be anchored in a concrete bed and consisting of welded rails arranged on LVT blokets, for example of the Sonneville type, not connected by sleepers. The ordinary making of such a concrete track is by nature the enemy of mechanization. The process allows the intervention of many mechanized means, which ensures a continuous installation with high efficiency. The device for carrying out the method comprises three compositions of equipment and machines which, succeeding one another on the site, continuously prepare and position exactly the way to be sealed in the concrete.

Description

The invention relates to a high-performance mounting and positioning method of a railway track to be anchored in a concrete bed and the device for its implementation.

The way to be mounted and anchored in a concrete bed consists, in the form of execution here exposed, of UIC rails 60 attached to concrete elements or blokets known as LVT, for Low Vibration Track, Sonneville type, such as in the patent CH 695 698 , fitted with w-type W 14 Vossloh fasteners. The method according to the present invention can be applied to other similar materials.

This type of railway was laid mainly in tunnels (Eurotunnel, tunnel Zimmerberg Zurich Thalwil), by manual means sometimes assisted by mechanical means punctual. If we know that each rattle weighs about 100 kilos and that the absence of sleepers (the concrete to be poured later constituting a gigantic and unique cross) requires to maintain the rails by complex means to install, we can understand the painful nature of track installation work and slowness. To these difficulties is added the fact that, in the absence of ballast playing its traditional role of shock absorber, the concrete blocks are provided with rubber slippers intended to damp the vibrations, hence their name LVT, but hence their fragility, the elastic envelope does not support the constraints of mechanized input devices.

The present invention aims to greatly facilitate and greatly accelerate the construction of such a path by providing a method for the intervention of rapid mechanized means and providing mounting and positioning of the continuous high efficiency path.

The solution according to the invention is provided by the process according to claim 1.

The method according to claim 1 and the device of its implementation according to claim 2 consist of bringing rails in sections of 120 m, weld them to form two continuous parallel rails, to bring the rail supports called blokets and to climb to the rails, then position the way created before the shoring thereof and pouring a concrete bed, the latter two shoring and casting operations are not included in the process according to the invention, the whole being achieved by mechanized means providing a pace of laying work of the high-efficiency track.

LIST OF FIGURES

• Figure 1 . Diagram of a complete cycle of stages of phase A (unloading, welding and temporary laying of rails)
• Figure 1a . Welding vehicle seen in diving
• Figure 2 . Blocks unloading unit, in the composition of C2 blocks for phase B
• Figure 2a . Same unit as figure 2 , schematic view from above
• Figure 2 b. Same unit as figure 2 , back view
• Figure 2c . Central beam with clamps for gripping the blocks
• Figure 3 . Mounting composition of track C3, with carriages C3 / 1, C3 / 2 and C3 / 3 for phase C
• Figure 4 . Diagram of the 7 cycles of step 21 (capture and presentation of the blocks)
• Figure 5 . Input and translation element of the blocks
• Figure 5a . Stem Clamp
• Figure 6 . Means of capture and positioning for gauge, cant and inclination of the rails, seen in isolation
• Figure 7 . Same elements as figure 6 , in cross-section

detailed description

The site start situation is as follows: a concrete slab 1 was previously poured over the entire length of the site and is the bottom floor of the tunnel on which will move the mechanical machinery before the laying of the track. This raft has an altitude approximately 50 cm lower than the altitude of concrete permanently poured into the previous site 2, which ended with the definitive laying of a continuous section of track T0.

By convention, the building site to which the process according to claim 1 applies is called the current building site 3. It represents a building site unit with a length of up to 2,160 meters. This last length, which is in principle a maximum value, has been set taking into account the logistics and working hours of the auxiliary staff. Above all, it is the possibility of storing rails and rattles on the wagons of laying equipment which will determine the working capacities and hence the length of phases A, B and C mentioned below.

The current construction site 3 begins at S1, where two first S1 welds will be made to join the track T0 of the previous site 2. As we have just seen, the level of the raft 1 of the current site 3 is less than that of the track of the previous site 2, it is necessary to build a temporary ramp 4 to allow compositions of mechanized means to descend to enter the current site 3. The construction of the temporary ramp 4 is not included in the invention and is reiterated at the beginning of each current site, on the end of the T0 section of the previous site 2, the last tens of meters of track (30 to 50 m) of T0 have for this reason not been concreted.

1. A. Déchargement et soudage des rails
2. B. Déchargement des blochets
3. C. Montage des blochets et préréglage ou positionnement de la voie.

The method of claim 1 is divided into three main phases:

1. A. Unloading and welding rails
2. B. Unloading the blocks
3. C. Mounting of the blocks and presetting or positioning of the track.

Phase A comprises steps A1 to A15 of the process according to claim 1, phase B steps B16 to B18 and phase C steps C19 to C24. These steps are in principle one after the other. But as the process as a whole aims to put the railway in position to be concreted at a continuous rate as fast as possible, some stages of phase B may advantageously run at the same time as those of phase C, but of course to another place, to know more ahead. In this way the shoring of the positioned track can proceed continuously, immediately following the phase C.

The current construction site 3 begins with the arrival of a composition of rails C1 which crosses the temporary ramp 4 access to the site and stops just before the start of the current construction site 3 at the location S1. At the head of the composition C1 is a low platform car 5 on which is stored a welding vehicle 6 provided with four tracks 7, a welding unit 8 by spark-forging movable by crane, a device comprising roller rail clamps 9 for gripping and guiding the rails, mounted at the rear (not shown) as well as an energy unit 10 comprising a diesel engine with particle filter.

The welding vehicle 6 leaves the low platform car 5 from the front and descends, by a slide 11, on the raft 1. During this time, auxiliaries install on said raft 1, centered in the axis of the track at realize, roller supports 12, spaced about 12 to 15 m, on which will be arranged the two rails R1 T1 section, said rails R1 being stored on the rail cars WR.

Behind the welding vehicle 6 whose low platform car 5 remains permanently in the composition C1 is a wagon 13 with a rail crane 14 mounted on wheels, said crane operating by means of winches on a raceway. The winches provide excellent traction, which is not the case with the means of the state of the art used to pull the rails in similar circumstances. With its rail clamps, not shown, the crane 14 releases the rail bars R1, R2, etc.. approximately 120 m of the rail cars WR, which allows the welding vehicle 6 to seize it by means of the rail clamps 9.

Proceeding on its tracks 7, the welding vehicle 6 pulls the rails R1 which descend on the raft 1 by passing on the low platform car 5 and installs them on the roller supports 12 predisposed to the center of the track, which delimits a first section of track T1. Therefore, the two rails R1 are deposited, very close to one another and resting on said roller supports, in the axis of the track, and this operation carried out in a mechanized manner will allow to move them transversely for the set at the standard gauge of 1435 mm in a mechanized manner as well. To do this, the welding vehicle 6 which had stopped at the head of section T1 moves back towards the beginning of said section by continuously spacing the rails R1 by means of the rail clamps 9 operating here as roller guides.

In addition to pulling and installing the rails R1 and then setting them apart, the welding vehicle 6 performs a third task, which is the execution of the welds S1, S2, S3, etc. proper. Positioned on the rear of the section T1, said vehicle equipped with the welding unit 8 by spark-forging movable by crane ensures the realization of welds without hindering the longitudinal path of the rails R1 that causes forging during this kind of welding, asqu it is crawler mounted.

When the welds S1 are completed, the welding unit 8 is stored on the welding vehicle 6 and it seizes a second pair of rails R2 which is pulled and installed on the roller supports 12 in the same way that were the rails R1, which delimits the next section T2. It should be noted that, once the S1 welds are completed, the rails R1 are no longer delimited as such but joined to the T0 section of the previous site. Then the welding vehicle 6 back on the T2 section to its beginning while leaving the rails R2 as it did to the T1 section. Then the T2 welds are made.

The rails R1 spaced apart by means of spacing bars 15 not shown in the figures but necessary for the temporary maintenance of the rails so that the composition C1 can, even before the mounting of the track, proceed and, following , the composition C2 which will be discussed. These spacer rods were previously arranged on the current site in bulk and are inserted through a rail-laying 16 landed by the welding vehicle 6 at the beginning of the section T1. The spacer bars are mounted at a distance that may vary from 4 to 6 m from each other during welding operations S2. They will be dismantled before the completion of Phase C mounting of the blocks.

The rails R1 thus maintained by the spacer bars 15 of the section T1 constitute a temporary path that can now once the welds S1 cooled be borrowed by the composition C1, which advances by about 120 m and stops at the end of the T1 section before S2 welds.

A new cycle of unloading and installation of R3 rails can be completed, as well as S3 welds, until the completion of phase A of the current yard 3 over a maximum of 2160 m, ie after 18 sections at most provisional route T1 to T18 whose two rails each form a single rail of the length of the current site 3. It therefore appears that the notion of provisional track section constitutes an operational unit, also provisional, of stages of process of phase A which does not have a noticeable material translation at the end of the realization of the provisional way become a single stretch having the length of the current building site 3.

The welding vehicle 6 then reintegrates its low platform transport car 5 and the composition C1 leaves the current site 3 and leaves the tunnel.

1. a) un wagon plat de stockage de blochets de réserve sur lequel peut manoeuvrer un élévateur automobile, non représenté,
2. b) deux wagons-bogies de tête 18 et de queue 19 équipés d'un chemin de roulement et d'une rotule d'appui 20,
3. c) deux poutres latérales 21 équipées de chemin de roulement et prenant appui en leurs extrémités reliées par une traverse avant 21a sur la rotule d'appui 20 du wagon-bogie de tête 18 et par une traverse arrière 21b sur la rotule d'appui 20 du wagon-bogie de queue 19, lesdites poutres étant disposées à l'écartement maximum autorisé par le gabarit ferroviaire,
4. d) deux portiques automoteurs 22 pouvant circuler sur le chemin de roulement, équipés chacun d'une installation de levage et d'abaissement par treuils motorisés d'une poutre centrale 23 servant à saisir, sur les wagons de stockage, une série d'une soixantaine de blochets alignés et apposés 25 et à décharger ladite série sur le radier en passant entre les poutres latérales 21,
5. e) des dispositifs de saisie 24 des blochets par leur attache w disposés sous la poutre centrale 23, en nombre égal au nombre de blochets à saisir dans une série 25,
6. f) lesdits dispositifs de saisie 24 consistent chacun en une paire de tiges écartables 26 qui peuvent être serrées au moyen de deux leviers 27 se croisant mus par une tringle centrale 28 disposée sous la poutre centrale 23,
7. g) plusieurs wagons de stockage des blochets munis de chemins de roulement pour les portiques, non représentés.

Phase B unloading blocks can then begin with the arrival, at the beginning of the current worksite 3, a composition of blocks C2 comprising:

1. a) a flat car for storing reserve rattles on which can operate a car lift, not shown,
2. b) two bogie wagons of head 18 and tail 19 equipped with a raceway and a support ball 20,
3. c) two lateral beams 21 equipped with raceway and supported at their ends connected by a front cross member 21a on the support ball 20 of the head bogie car 18 and a rear cross member 21b on the support ball 20 the bogie tail 19, said beams being arranged at the maximum spacing authorized by the rail gauge,
4. d) two self-propelled gantry cranes 22 able to circulate on the raceway, each equipped with a lifting and lowering installation by motorized winches of a central beam 23 used to grasp, on the storage wagons, a series of a sixty blocks aligned and affixed 25 and to discharge said series on the raft passing between the lateral beams 21,
5. e) gripping devices 24 of the blokets by their attachment w arranged under the central beam 23, in number equal to the number of blocks to seize in a series 25,
6. f) said gripping devices 24 each consist of a pair of spreadable rods 26 which can be clamped by means of two levers 27 crossing one another driven by a central rod 28 arranged under the central beam 23,
7. g) several cars for storing blocks with raceways for gantries, not shown.

Elements b) to f) form a unit for unloading the blocks in series of 60 pieces, a unit represented by the figures 2 , 2a and 2b .

The unloading of the rattles in accordance with a rigorous stowage procedure on the storage wagons, central beam grabbing with 60 pairs of rod clamps, and removal of the aligned and closely packed rattles at the center of the future track is This is of paramount importance for the good performance of the process and the high efficiency that depends on it. If the blocks are badly placed on the floor, in fact, the subsequent operations of capturing the blocks of phase C will be slowed down and the benefits of the whole greatly reduced.

The Figure 2c shows how are arranged and actuated the 60 clamps 24, 26 under the central beam 23 by means of the central rod 28.

When the composition of blocks C2 has taken enough time to release the beginning of the current worksite 3, the third composition C3 mounting blokets and positioning of the track can cross the temporary ramp 4 access to the current site 3 and start his work (phase C).

1. a) un poste de pilotage 28 pivotant utilisé hors travail pour les transferts
2. b) des télécommandes pour un opérateur posté hors du chariot
3. c) plusieurs batteries rechargeables 29
4. d) 4 moteurs électriques entraînant chacun une roue par chaîne et réducteur
5. e) 4 roues dirigeables 30 lors des transferts et à direction pouvant être bloquée en phase de travail par vérins individuels télécommandés
6. f) 4 dispositifs de guidage par translations latérales des roues
7. g) 4 galets palpeurs 31 pouvant s'appuyer aux parois ou murs latéraux aux fins de guidage
8. h) une grue de manutention 32
9. i) des pinces à rails à rouleaux 33 pour la saisie et le guidage des rails,

This mounting and positioning composition of the track C3 comprises successively three autonomous carriages C3 / 1, C3 / 2 and C3 / 3 to be implemented one behind the other and having as common features that each has the following equipment :

1. a) a swivel cockpit 28 used out of work for transfers
2. b) remote controls for an operator posted off the truck
3. c) several rechargeable batteries 29
4. d) 4 electric motors each driving one wheel per chain and gearbox
5. e) 4 steerable wheels 30 during transfers and in direction that can be blocked during the work phase by remote controlled individual cylinders
6. f) 4 guiding devices by lateral translations of the wheels
7. g) 4 feeler rollers 31 which can lean against the side walls or walls for guiding purposes
8. h) a handling crane 32
9. i) roller rail clamps 33 for gripping and guiding the rails,

The first carriage C3 / 1 serves to position the rails, the second carriage C3 / 2 to maintain the rails, to grasp and fix the blokets to the rails and the third C3 / 3 to refine the final position of the track and to maintain before shoring and pouring concrete. Their common construction details are that the rail clamps, which have the function of gripping, holding and guiding the rails, are in working position at the standard gauge of 1435 mm and that they are in so wrapped by the chassis resting on the wheels 30, which are mounted to ensure a distance much greater than that of the path to be treated, and thus to avoid the blokets attached to the rails. Likewise, the dimensions and the position of the frame elements of the three carriages C3 / 1, C3 / 2 and C3 / 3 are intended to span and avoid the space occupied by the rails and the blocks. In short, the elements of the frame and support of the working members are designed to leave free the spaces occupied by the track assembly and the permanently mounted track.

The first carriage C3 / 1 is specially equipped with a reserve storage space storage 33a.

The second carriage C3 / 2 is specially equipped with a device for gripping and handling the blocks 34 comprising a longitudinally displaceable beam 35 at the end of which is suspended a transverse frame 36 that can pivot on the transversely displaceable horizontal plane. are suspended two turrets 37 forming a pair. Each turret is disposed vertically on two slide tubes and has at its end a gripping member of the blokets 38 provided with a pair of rods 39 that can move away and close under the fastener w of the bloket grab. Finally each turret is mounted so that it can rotate on itself to operate at least half a turn.

The second carriage C3 / 2 is still specially equipped with a pair of gripping elements and positioning of the blokets 40 under the rails each formed of a removable plate 41 transversely fixed to a vertical support frame 42 longitudinally removable and slidable from the low position of reception of the rattle to the high position of fixing said rattle under the rail.

The figure 4 illustrates the 7 successive positions of a pair of blocks moved by the elements 34 to 42, from the original position in the series 25 to the position under the rail just before attachment by rotation of the fastener w and tightening of the bolt 43 (tie screw).

Each movable member of the bloket handling devices 34 to 42 is driven by an electric motor with gearbox and chain incremented transmission 44.

The third carriage C3 / 3 comprises means for gripping and holding rails 45 which make it possible to ensure the final separation by spacer cylinder 45a, the positioning by roller clamps 45b in profile and in outline, to create a superelevation of the track by tilting the virtual plane of installation of the left and right shafts by means of cylinders actuated in the vertical direction 46 as well as to incline each rail at 1:40 by means of 4 lateral actuators 47 acting on 4 articulated shafts 48 of lateral support of the rails.

Apart from the invention according to claim 1, immediately behind this carriage C3 / 3 are installed means for shoring the positioned track. Then the concrete is poured on the raft until the blocks are drowned about three quarters, or until their elastic envelope is completely buried.

LIST OF ELEMENTS

1.

Concrete raft

2.

Previous site, concreting completed

T0

Continuous section of track from the previous site

3.

Current site

S1

Beginning of the current site, 1 ^st welds

4

Temporary ramp to access the current site

C1

Rail composition

5

Low platform wagon

6

Welding vehicle

7

caterpillars

8

Welding unit

9

Grippers for gripping, guiding and handling rails

10

Energy unit, Diesel engine with particle filter

11

Railcar access slide 5

12

Roller supports

13

Wagon crane with raceway

14

Removable motorized rail-mounted crane

15

Spreaders (not shown in the figures)

16

Laying rails

17

Energy unit of the crane 14

18

Bogie wagon head of the side beams

19

Bogie tail of side beams

20

Support ball of the ends of the lateral beams

21

Lateral beams

21a

Crossbar connecting the front ends of the side beams

21b

Crossbar connecting the rear ends of the side beams

22

Self-propelled gantry cranes

23

Central beam hoisted by porticoes 22

24

Devices for gripping blocks

25

Series of 60 aligned blocks seized by the clamps of the central beam 23

26

Staple pliers to grip the fasteners of the blochets

27

Levers for spacing and clamping of the clamps

28

Cockpit

29

Rechargeable batteries

30

wheels

31

Feeler rollers

32

Handling crane

33

Roller rail clamps

34

Blocks gripping and handling device

35

Longitudinally removable telescopic beam

36

Transverse frame rotatable

37

Slide turrets

38

Blocks seizure organ

39

Hold rods under fasteners w

40

Holding and positioning element for the blocks

41

Tray removable transversely

42

Vertical support frame

43

Bolt says lag bolt

44

Electric motor with reducer and incremented transmission chain

45

Means for gripping and holding rails

45a

Spacer cylinder

45b

Roller rail clamps

46

Vertical cant cylinder

47

Side cylinder tilting rail at 1:40

48

Articulated lateral support shaft

Claims (2)

A process for mounting and positioning a railway in a high-performance manner with a view to its permanent anchoring in a concrete bed, said railway being made of rails fixed on concrete blocks or blocks (hereinafter blochets) not connected by sleepers,
characterized in that it takes place in 3 main phases A, B and C which cover the operations of a site named current site (3), succeeding one another on the same work site so that the whole process offers the possibility of pouring concrete at a high rate,
in that the purpose of the phase A is the realization and the provisional assembly of two continuous rail lines over the entire length of the current worksite (3),
in that the purpose of phase B is the unloading and the temporary storage of the blocks in a manner allowing their capture and their translation by mechanized means,
in that the purpose of phase C is to mount the blocks, by mechanized means, to the rails and to create a railway line positioned to be anchored in a concrete bed,
in that the entire process comprises the following steps: A 1. A first pair of rails R1 with a length of approximately 120 m each is discharged from a composition of rails C1 on roller supports (12) previously arranged on the slab (1) where the concrete will be poured and drawn. by a welding vehicle (6) advancing on said raft towards the front of the site, said pair of rails forming a first section of rails T1; A 2. R1 rails T1sont section arranged one beside the other in the center of the track to be created, at a very lower than the normal spacing distance; A 3. The rails R1 of the section T1 are spaced and positioned at the standard spacing by transverse displacement continuously operated from the front of the section T 1 by the welding vehicle (6), which proceeds backwards by rolling on the raft to the beginning of section T1; A 4. Each rail R 1 of the section T 1 is welded, one after the other, by spark-forging, to the rail of the T0 section of the previous site (2), the connection between the old section T0 and the new one. section T1 being thus performed by the welds S1; 5. A second pair of rails R2 of the same approximate length of 120 m is discharged from the track C1 of composition in the direction of the front of the construction site and disposed on roller supports (12) so as to form a second section T 2 of rails, these two rails R2 being pulled by the welding vehicle (6) and temporarily installed next to each other in the center of the track to be created at a spacing much lower than the normal spacing ; 6. A rail R2 of the section T2 are spaced and positioned at the standard spacing by transverse displacement continuously operated from the front of the site, by the welding vehicle that moves back towards the section T1, similarly to that of step 3; A 7. Each R2 rail section T2 is welded to the previous track R1 of the section T1 flash-butt, by a pair of welds S2; A 8. During step 7, spacing bars (16) are fixed under the rails R1 of the section T1 at regular intervals of approximately 4 to 6 m, so as to keep the rails in a provisional track position which can be used by heavy rail vehicles; A 9. The composition of rails C1 is advanced on the temporary track section T1 and stopped just before the welds S2; A third pair of rails R3 is discharged from the composition C1 after the section T2 and pulled to the front of the site to form a new section T3 in a similar manner to that of the step A 5; 11. A section T3 R3 rails are spaced similarly to that in Step A6; A 12. Spacer bars (16) are fixed under the rails R2 of the section T2, as in step A8; 13. A section T3 R3 rails are welded to the rails R2 of the section T2 by flash-butt, which form the pair of S3 welds; A 14. The composition of rails C1 is advanced on the temporary track section T2 and stopped just before the welds S3; A 15. The operations of steps A 10 to A 14 are repeated at will until forming a continuous temporary path over the entire length of the current site; B 16. A composition of blocks C2 engages on the section T1 where are discharged, by successive series of about sixty pieces, the blocks which one disposes on the raft in a regular way, aligned and affixed to each other perpendicular to the axis of the track and in the center of the track, so that it can be seized mechanically; B 17. Behind the composition C2, the spacer bars are detached from the rails and left on the ground; B 18. The unloading operations of the blocks in accordance with step B 16 are continued continuously, until the blocks for the assembly of the entire track of the current building site (3) are unloaded; C 19. A composition for mounting and positioning of the track C3 engages on the section T1; C 20. The rails R1 are seized by the carriage C3 / 1 of the composition C3, then lifted, adjusted in the transverse direction by shifting and maintained in a spatial position corresponding approximately to the future position of the track to be anchored in the concrete. preserving the handling possibilities of the following steps: C 21. By the carriage C3 / 2 of the composition C3, the rails are also gripped and held, then the blocks arranged in the center of the track section T1 at step 16 are successively seized in pairs, separated from each other the other, the pair is turned on itself by a quarter turn, if necessary each blochet is still turned on itself by a half turn to be put in place, and are positioned each under each line rail R1 and attached to said rails by rotation of the fasteners w and drawing; C 22. The spacer bars are collected and stored at the front of the carriage C3 / 3 of the composition C3; C 23. The track created in this way is put in its final position by means of the C3 / 3 carriage, the final adjustment comprising the millimeter operations of lifting, shifting, canting, standard spacing and tilting. rails at 1:40; C 24. The portion of lane thus created and positioned is maintained until struts are put in place and allow the composition C3 to leave this lane sector and continue its progression, by repeating steps C 20 to C 24 until the completion of the current project (3). Device for carrying out the method according to claim 1,
characterized in that it comprises a composition of rails C1, a composition of blocks C2 and a composition for mounting and positioning the track C3 distinct, independently movable and / or pushed / pulled by locomotive,
in that the composition of rails C1 comprises, from front to rear, a) a low platform wagon (5) on which is arranged a crawler-type welding vehicle (6) and comprising a spark-for-welding unit (8), a device (9) for gripping, guiding and manipulating the rails and an energy unit (10) comprising a diesel engine with a particulate filter, b) a wagon (13) equipped with a raceway, a motorized rail crane (14) moving on it by means of winches, an autonomous device (16) for lifting and installing rails arranged detachably and can be stored in front of said car (13) and an energy unit (17), (c) several wagons (WR) on which are stored the rails to be installed by coupons of approximately 120 m, in that the composition of blocks C2 comprises, from the front to the rear, a) a flat car for storage of reserve blocks on which can operate a car lift, b) two bogie head (18) and tail (19) wagons equipped with a raceway and a support ball (20), c) two lateral beams (21) equipped with a raceway and supported at their ends connected by a front cross member (21a) on the support ball (20) of the head bogie wagon (18) and by a rear crossmember (21b) on the support ball (20) of the bogie car of tail (19), said beams being arranged at the maximum spacing authorized by the rail gauge, (d) two self-propelled gantries (22) capable of running on the raceway, each equipped with a lifting and lowering facility by motorized winches with a central beam (23) for gripping, on the storage wagons, a series of about sixty aligned and affixed blochets (25) and to discharge said series on the slab passing between the lateral beams (21), e) said central beam (23) being provided with as many grippers gripping devices (24) by their fasteners w as there are gripping locks in a series, f) said gripping devices each consisting of a pair of spreadable rods (26) and being clampable by means of two levers (27) crossing one another driven by a central rod (28) disposed under the central beam (23), (g) several cars for the storage of blocks with raceways for gantry cranes (22), in that the mounting and positioning composition of the track C3 comprises successively three autonomous carriages C3 / 1, C3 / 2 and C3 / 3 to be implemented one behind the other and having as common features that each has following equipment: (a) a swing cockpit (28) used outside work for transfers b) remote controls for an operator posted off the truck c) several rechargeable batteries (29) d) 4 electric motors each driving one wheel per chain and gearbox e) 4 steerable wheels (30) during transfers and steering that can be blocked during the work phase by remote controlled individual cylinders f) 4 guiding devices by lateral translations of the wheels g) 4 feeler rollers (31) which can bear against the side walls or walls for guiding purposes h) handling crane (32) i) roller rail clamps (33) for gripping and guiding the rails, in that the first carriage C 3/1 serves to position the rails, the second carriage C 3/2 to hold the rails, to grasp and fix the blokets to the rails and the third C 3/3 to refine the final position of track and maintain it before shoring and pouring concrete,
in that the second carriage C 3/2 is specially equipped with a device for gripping and handling the blocks (34) comprising a longitudinally displaceable beam (35) at the end of which is suspended a transverse frame (36) which can pivoting on the transversely displaceable horizontal plane, to which are suspended two turrets (37) paired, each turret being arranged vertically on two sliding tubes and being endowed at its end with a gripping member (38) provided with a pair of rods (39) which can move apart and close under the fastener w of the grabber, each turret (37) being mounted so as to be pivotable on itself to operate at least half a turn,
in that said second carriage C 3/2 is further specially equipped with a pair of gripping and positioning elements of the blocks (40) under the rails each formed of a removable plate (41) transversely fixed to a frame of vertical support (42) longitudinally removable and slidable from the low position of reception of the rattle to the high position of fixing said rattle under the rail,
in that each movable element of the bloket handling devices of said carriage C 3/2 is driven by electric motor with gearbox and incremented chain transmission (44),
and in that the third carriage C 3/3 comprises means for gripping and holding the rails (45) which make it possible to ensure the final separation by spacer cylinder (45a), positioning by roller clamps (45b ) in profile and in course, to create a slope of the track by tilting the virtual plane of installation of the left and right shafts by means of cylinders actuated in the vertical direction (46) as well as to incline each rail at 1:40 to means of 4 lateral cylinders (47) acting on 4 articulated shafts (48) for lateral support of the rails.

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