FR2674266A1 - INSTALLATION FOR INSTALLATION AND SUBSTITUTION OF RAILWAY CONSTRUCTION ELEMENTS AND METHOD USING THE INSTALLATION. - Google Patents

Abstract

The invention relates to a device for laying and replacing railway track construction components, such as lengths of track and points. This device is of the type comprising a certain number of lifting carriages (3) which move on the track (4) and at least one lifting gantry crane (1) which moves on caterpillar tracks (7) for transporting, laying or replacing track components. The device is characterised in that it has only one gantry crane (1) for transport and for lifting which is capable of moving on caterpillar tracks (7) or on the track (4), as well as a certain number of lifting carriages (2), at least two, which depends on the dimension of the track component (5). The invention may be used in the field of railway track installations.

Description

The invention relates to a plant for laying and substitution

  railroad construction elements, such as track lengths and turnouts, of the type including a number of lift carriages traveling on the track and at least one crawler lifting frame for transportation , the laying and substitution of track elements, and a method using this facility. Installations and processes of this type are already known, but they have the disadvantage of being of insufficient efficiency, uneconomical, requiring too much personnel and too long construction times. The object of the present invention is to propose a method and an installation that does not present the

  above-mentioned drawbacks of the state of the art.

  To achieve this goal, the installation according to the invention comprises only a gantry of transport and lifting moving on crawler tracks and on the railway, as well as a number of lift trucks which depends on the dimensions of the element of lanes and whose

number is greater than 2.

  According to an advantageous characteristic of the invention, the installation also has a number of lifting devices for track construction elements, which depends on the dimensions of the track element, these devices being each provided with undercarriage for their movement on the main track and undercarriages for their movement on auxiliary rails placed next to the main track, and capable of being transported on the lifting carriages carrying a

track element.

  According to another advantageous characteristic of the invention, the transport and hoisting gantry comprises: a base frame with a telescopic main longitudinal beam which extends in the logitudinal direction of the track to take and carry a track construction element two undercarriages with wheels intended for movement on the main track and two vertical load-lifting columns, arranged on each side parallel to the center line of the track, of the base frame, offset in the longitudinal direction of the track , movable in translation, perpendicular to the direction of the track, variable in length and each comprising a column member sliding axially in a guide member and whose foot is mounted on a crawler trolley, the running gear being pivotable between a lowered working position for moving the gantry on the track and a high position, entered in the frame of ba itself, the lifting columns being modifiable between a working position of output downwards for the displacement of the gantry using the tracks and a retracted position

  for moving the gantry on the rails.

  According to yet another advantage of the invention, the two vertical guide elements of the lifting columns, arranged on each side of the base frame, are fixed to a transverse beam device.

  telescopic mounted on the base frame.

  According to yet another advantageous characteristic of the invention, the main longitudinal beam comprises a central element mounted on the base frame and two sliding telescopic elements in this central element, and four pairs of clamps arranged on the central element and the two elements. telescopic, movable transversely to the track and, where appropriate, vertically to take and carry a weight element, the central element being pivotally mounted at its center on the base frame, in a plane parallel to that of the base frame and of the plane of the track, at a predetermined angle, so that a precise and well-centered lifting of even unformed and bulky track elements, such as the area of the needle core, is ensured. According to yet another advantage of the invention, a track element hoist comprises a base frame provided with running gear for its movement on the main track, a telescopic transverse beam pivotally mounted on the base frame, on an angle of 90, and at each end of which is fixed a vertical lift column of load, of variable length, which comprises a movable column member at the base of which is fixed a rolling device, each column member being movable between a retracted position which allows the hoist to move on the main track, using the undercarriage of the base frame, and a working out position which allows the hoist to move on auxiliary rails located on both sides of the main track, using undercarriages

  load-lifting columns.

  The method according to the present invention is characterized by the fact that for transporting a track element between a mounting area of the track element and the start of the installation or cutting site, or forms a transport train of the track element to be installed or substituted, or this element rests on the transport carriages and the transport and hoist gantry is used as a pulling or pushing machine moving on the main track; whereas, if lifting equipment for track elements is used, the latter shall be taken to the lift carriages; that for transporting the track construction element between the beginning of the cut and the installation position therein and for raising or lowering the track element in the cut, the transport and hoisting gantry is brought to move on these crawler carts in the cut; whereas, if the lifting devices of track elements are used, auxiliary rails are laid in the area of the main track in front of the section and in the area adjacent to the section, on either side of the main track, and the lifting gear is moved on these auxiliary rails, and the track building element is then carried by the transport and lifting gantry.

as well as by lifting gear.

  The invention will be better understood, and other purposes, features, details and advantages thereof

  will become clearer during the description

  explanatory text which will follow with reference to the accompanying schematic drawings given solely by way of example illustrating an embodiment of the invention, and in which: FIG. 1 shows in a, b, and c three phases of the process according to invention; Figure 2 is a side view of the gantry of transport and lifting according to the invention; Figure 3 is a top view of the gantry shown in Figure 2; Figure 4 is a front view in the direction of the arrow IV of the transport and lifting gantry in Figure 2, the latter being shown in two work positions; Figure 5 is a front view in the direction of the arrow V of the base frame of Figure 3, designated by the numeral 12; Figure 6 is a sectional view of the base frame 12 along the line VI-VI of Figure 3; Figure 7 is a view, broken away and on a larger scale, of the detail indicated in VII in Figure 2; Figure 8 shows in a front view the detail VIII of Figure 3; Figure 9 is a front view of the hoist of railway elements, according to the invention, identified by 3 in Figure 1; FIG. 10 is a top view of the mounted lifting device of track elements according to FIG. 9 and FIG. 11 shows a side view of the lifting device of the track elements of FIG. 9, moving

on the auxiliary rails.

  Firstly, the structure of the different machines of the installation according to the invention will be described below. According to FIG. 1, such an installation for installing and replacing railroad construction elements, such as track lengths and in particular routing sections and complete switches, comprises a transport and hoist gantry 1 and depending on the size and size of the track element, a predefined number of at least two lifting carriages, a number of track element lifting gear 3, which also depends on the dimensions and size of the track element.

the track element marked with 5.

  As can be seen from FIG. 1, which shows three different stages of the method according to the invention, the transport and hoist gantry 1 can move as well on the main track 4, with the aid of two pivoting undercarriages 6 and by means of four crawler carriages 7 whose position is variable in height. This gantry is constructed in such a way that it is able to pick up and transport even large track elements in a well-centered manner, such as turnouts. whose geometry varies considerably in the longitudinal direction, particularly at the level of the apparatus core and the extremities It can also be used as a pushing or pulling vehicle for the installation during the transport of the track element on the main track FIG. 1 also shows that the hoisting machines 3 have two undercarriages 9, 10 allowing them to circulate on the main track 4 or on auxiliary rails 11 which are t laid in the track construction site area,

  Laterally and externally of the main track 4.

  Lifting carriages 2 may only travel on the

main track 4.

  As shown particularly in Figures 2 and 3, the gantry for transport and lifting 1 according ivention includes a base frame 12 which are articulated two undercarriages 6 whose wheels are marked by 13, by means of devices 14 The base frame also carries the crawler carriages 7, in a height-adjustable manner. The base frame 12 comprises a horizontal upper part which essentially has four rectangular profiled beams 16, arranged transversely to the track, in pairs. These beams are connected together. the others at their ends by U-shaped beams 17, 18 arranged in the longitudinal direction of the track The four beams 16 are parallel to each other Each transverse outer beam 16 of each pair is fixed another U-shaped beam 19 , offset downwards, in the extension of the longitudinal beams 17, 18 Vertically below this part of the basic frame at a greater distance from the latter is a lower horizontal base frame part which is essentially formed of profiled beams 22 or 23 placed in the transverse directions and

  longitudinals, as shown in Figures 2, 5 and 6.

  These two frame parts are connected to each other by vertical intermediate beams placed near the outer sides, of which only four rectangular vertical profiled beams designated by 24 are

  retained for further description Each of these

  beams 24 is fixed abutting under an inner transverse beam 16 in the longitudinal direction of the frame and carries at its lower end a transverse beam 22 each pair of these intermediate beams 24 is symmetrical to the longitudinal center line of the base frame and located at the of each wheel 13, so that the devices 14 provided for the pivoting of a undercarriage can be articulated to the intermediate beams 24 and

transverse beams 22.

  Between the upper and lower base frame portions extends, along the entire length of the base frame, a closed channel 25 which has a rectangular cross-section widening from the central transverse plane of the frame to both ends, according to An angle B of for example 50 This channel 25 is formed of sheets welded together and to the frame beams, like the plates 26 of Figure 6 All connections between the profiles forming the base frame and the sheets are made by welding Thanks to the structure that has just been described and the assembly by welding, the frame, the latter has a high rigidity

  and resistance to torsion.

  The rectangular closed channel serves as a guiding device for a main longitudinal beam 26 with telescopic extension, comprising a central element 27 and, at each end, a telescopic element 28 which slides in this central element The central element 27 extends through 25 in the region of the central plane of the base frame, the beam 27 is respectively fixed at 29 and 30 on the upper and lower walls of the channel pivotally about a vertical axis L '. pivoting angle of the telescopic beam 26 is equal to the widening angle B of the channel 25 The beam 26 is variable

in length by hydraulic way.

  At each end of the central element 27, which protrudes out of the channel 25, is fixed a transverse beam 32 symmetrically with respect to the longitudinal axis of the track (FIG. 8). It is formed of two U-shaped profiled sections. towards each other on each half of this beam moves axially a carriage 33 which carries a clamp 34 to take from below and carry a rail of the track element 5 The clamp 34 is

  mounted in the carriage 33 in a height adjustable manner.

  It can rotate around its vertical axis on 1800 to be able to take from under a rail of the track 5 as well from the inside as from the outside The trolleys

  33 and the clamps 34 are hydraulically controlled.

  At the end of each mobile telescopic beam 28 is provided a beam 35 which carries a pair of clamps 36 adapted to take from below and carry the rails of a track element to install or replace this beam 35 to the general shape of the beam. a U open downwards, between the branches of which is fixed a vertically movable element 37 A clamp 36 is supported in each lateral face of this element displaceably transversely to the axis of the track

railway.

  As shown in FIGS. 2 and 3, a transverse hollow profiled beam 16 of each pair serves as a housing for a support frame 39 for two vertical telescopic load-lifting columns 40 located on one side of the base frame. Each of these columns is supported on one of the above-mentioned track trucks 7 each support frame 39 has a lower horizontal beam 41 oriented in the longitudinal direction of the track, a little above the transverse beams 16, and an upper beam 42 parallel to the beam 41A these Beams 41 and 42 which are interconnected by struts 43, are fixed the two guide members 44 of the two load-lifting columns 40. At the bottom of each fixed element 44, a section section 45 is laterally fixed. rectangular which is arranged transversely to the axis of the columns and sized so that it can engage in one of the two profiled beams s hollow 16 and axially slide in this beam, as clearly shown in Figure 3 With this housing, the support frame 39 with the load-lifting columns enter or exit laterally and transversely of the two profiled beams 16 corresponding Each column 40 has a element 47 which slides in the guide element 44 This element 47 hangs on a

crawler trolley 7.

  The four load-lifting columns 40 and the other telescopic devices which are each formed of a profiled beam 16 and a beam 45, are hydraulically controlled devices. The movable elements 44 and 45 can slide continuously in

  both directions of exit and withdrawal.

  FIG. 7 shows the device 14 which pivots a undercarriage 6. This device comprises two arms 48 placed symmetrically at the longitudinal central line and articulated at one end so as to pivot about a horizontal axis 49 at the end of a intermediate beam 24 These bottom 48 support the undercarriage 6 with the wheels 13, in a manner not shown The arms 48 pivot under the effect of a system of hydraulic cylinders 50, whose bodies are hinged at the top 51 to the intermediate beam 24 and whose piston rods are hinged at 52 to the arm 48 Each arm 48 may be locked at 53 to the portion of the lower base frame, in its working position in which the gantry of transport and lifting takes The basic frame 12 still carries all the energy supply, namely essentially a diesel engine device, a fuel tank and an installation. Hydraulic system with oil tank for controlling beams and telescopic columns, driving track trucks, driving and controlling brakes on undercarriages, operating track clamps, and electrical equipment including all the devices and devices for the implementation and control of hydraulic operations, start-up and control of diesel engines, lighting devices for

  night work, signaling and the like.

  Referring to Figures 9 and 11 will be described hereinafter a lifting gear 3 of track elements, according to the invention This machine comprises essentially a base frame 56 on which are fixed the two treads 9 allowing the movement of the machine on the main track On the base frame 56 is mounted a telescopic transverse beam 57 of variable length, pivoting on 900 between a position in the longitudinal direction of the track and a transverse position This transverse beam has a central element 58 and a movable element 59 which slide in each end of this central element in the direction of exit and withdrawal At the end of the element 59 is fixed a vertical hollow guide cylinder 60 in the axis of which [0009] The guide cylinder is movable along the column 62 under the action of a lifting cylinder 61. The lifting column 62 comprises a lifting element 62. e guide 63 in which slides a column member 64 in the directions of exit and withdrawal, under the action of an inner lifting jack of load, not shown in the figure The body of the lifting jack 61 is fixed to guide cylinder 60 and the piston rod to the guide member 63 of the load lifting column The foot of the moving beam member 64 is articulated to a substantially horizontal U-shaped beam 65 which is pivotable about a small angle At each end of the beam 65 is mounted a wheel 66 The wheels 66 and the beams 65 form the undercarriages 10 which allow the hoist to move on the

auxiliary rails 11.

  The basic frame 56 of the hoist 3 carries two hydraulically operated grippers 67 which are movable outward transversely to the longitudinal direction of the track, and can pivot on 1800 to take the tracks from below. only one side of the interior or exterior In addition, the basic frame carries a motor, for example a diesel engine, for the autonomous movement of the hoist and the entire hydraulic system that controls the various cylinders hydraulics, the pivoting of the transverse beam with the two lifting columns of

load, and the rail clamps.

  With regard to the transport carriages 2, it should be noted that they have their own hydraulic installation for controlling the lifting table 69 with the pivoting and sliding platform. The lifting table has a width sufficient for the track construction elements to be transported. can be placed centrally, safely Tables

  elevators can be controlled remotely.

  With reference to FIG. 1, it will be described how, with the installation according to the invention, a track construction element, for example a switch, is replaced. For this purpose, the installation comprises a gantry for transport and lifting, three gear

  switch lifting 3 and five lifting carriages 2.

  To remove the old switch, the transport and hoist gantry 1 goes after the entry of the lane lock, coupled to the three hoisting gear 3 and rises on the switch to be removed. All the machines then take the intended position. Lifting carriages are placed immediately in front of the switch to be removed in order to be able to support it during the removal operation, as shown in Figure lc During removal of the switch to be removed, cut at the ends, and signaling devices, as necessary, the gantry crane and hoist 1 as well as the lifting and switching gear 3 are put in the working state, that is to say that the carriages crawler 7 of the gantry 1 and the load-lifting columns 62 with the wheel sets 66 are out The wheels 66 are then placed on the auxiliary rails 11 previously placed in front of the crossheads of the switch withdraw in the zone c The telescopic beam 26 of the frame 1 is deployed and the clamps

  of this portico are fixed on the switch.

  The clamps 67 of the switchgear lifting gear 3 grip the rails of the switch from underneath and the latter is then lifted along its entire length up to 10 cm above the lifting carriages lying in front of the cut. gantry lift and transport 1 then moves the switch over the

  lifting trolleys, as shown in figure la.

  When, in the direction of travel, the first switching hoist 3 reaches the first hoisting trolley, that is to say the trolley on the left in Fig. 1c, the hoist lays the switch on the lift table of this truck, previously raised about 10 cm Therefore, all other tables remain uncharged After placing the switch on the lift truck, we enter the load-lifting columns 62 of the hoist until the wheels 65 are raised above the switch. Then the telescopic beam 57 is pivoted in the longitudinal direction of the track 900. The grippers 67 remain in their gripping position, so that the switching hoist, which is now carried by the hoist truck, is locked in this position, as shown in Figure la The gantry 1 continues to push the switch to the left and thus causes in the direction of transport the first lift truck with the switch hoist that rests on it When the second hoist 3 is above the second lift truck 2, seen from the left, the lift table of the truck is lifted by 10 cm and receives another part of the switch and the hoist, in the way already described This operation continues until the moment when the referral is based on

  five lifting carriages, as shown in Figure lc.

  When the gantry crane and hoist has left the cut and is on the main track 4, the gears 6 of the gantry are pivoted in their extended position and lifts the crawler carriages 7 so that the gantry 1 can now move on the track and, in accordance with Figure 1, serve as a push tractor for the transport of

the disassembly area.

  After unloading the old switch in the assembly area and loading the new switch on the five lifting carriages, again with the help of the transport and hoisting gantry 1 and the three hoisting gear 3, the new switch now pulled by the gantry 1, is brought to the section The lifting gear 3 remain on the switch, as is apparent from Figure lc Once arrived at the installation site, is moved the gantry 1 of the position "travel on track" in the position "crawler" It then takes the part of the needle that comes back to the heart of the device, that is to say the widest part of the switch The hoisting equipment rotates 900 their Lifting transverse beams 57 in their transverse working position in the longitudinal direction of the track The load lifting columns 42 are then exited so that their wheels 66 rest on the auxiliary rails 11 The switch is held by the clamps of these machines Lifting tables, so that the lifting tables of the lift carriages can be lowered Carried by the gantry 1 and the lifting gear 3, the switch is transported in the cut and placed on the ballast bed

prepared meanwhile.

  A major advantage results from the use of lifting gear 3 The rail clamps 67 have two missions that they fulfill thanks to their possibility of horizontal and vertical adjustments They lift and carry the track element and push the wheels of the trains of bearing 9 on the track element rails and thus lock the hoist during the lifting operation, descent, and during transport on this track element Due to the relatively large spacing of the wheels 66 trains 10, a stable support of the hoist on the auxiliary rails is guaranteed The pivoting of the beam 65, that is to say the undercarriage 10, around the angle, provides a stable support of the hoist by the four wheels 66 of carriage 10 on the auxiliary path, even when moving on the ramps of the auxiliary way for example to move from the main track in the section, and in the presence of possible inequality on the way In addition, the mechanical stresses are

  thus avoided in the hoist.

  The relative mobility of the load elevator columns 62 in their entirety with respect to their guide rollers 60 and the variable length of the telescopic columns 62 allow a long stroke to the lifting gear. The lifting of an element of

  Track construction can be executed in two stages.

  Firstly, the basic frame 56 with the transverse beam 57 is lifted by the action of the jacks 61 and the lifting operation then continues while taking out the

  column elements 64 outside the column elements 63.

  Thanks to its special construction and the method of use of the installation, which have just been described, the installation according to the invention does not

  neccesite only one gantry for transport and lifting.

  Additional gantries which were absolutely necessary in known installations are replaced, in accordance with the invention, by lifting gear. The replacement of gantries of complex and expensive structure by relatively simple lifting gear makes the installation according to the invention. infinitely more economical and easier to use In addition, these simple lifting structures and handling can, for some special uses o very expensive gantry cranes were so far

  indispensable, replaced these cranes.

  The removal of the old switch, as well as the installation of the new switch, can be carried out in 10 to 15 minutes by trained personnel During the installation and removal of switches and during loading and unloading on the lift trucks, the horizontal alignment of the switch can be controlled and guaranteed by an appropriate automatic adjustment of the position For this purpose, the crawler trucks of the gantry 1 are hydraulically controlled so that the basic frames of the gantry are located always at the same height and in the same plane So we are sure that an object to be transported informs and a disproportionate weight will not be subjected to mechanical stresses and to

bending, non-uniformly.

  Depending on the dimensions and size of the track-laying component to be installed, a corresponding number of lifting carriages 2 and lifting gear 3 is associated with a gantry 1 Due to the lateral and selective sliding of the load-lifting columns of the gantry 1 as well as the lifting gear 3, and the selective displacement of the rail clamps, it is always possible to take exactly in the center and to carry the track construction element The gantries are designed to allow a distance to be achieved.

  free between the tracks of 5, 35 or even 5, 70 m.

  This distance makes it possible to pass with the switches between the load-lifting columns or the crawler carriages and makes possible a change of position

side of the switch.

Claims (18)

  1 Installation for the laying and subtitution of track building elements, such as track lengths and turnouts, of the type comprising a number of lifting carriages moving on the track and at least one lifting frame moving on caterpillars for the transport, laying or substitution of track elements, characterized in that it has only one transport and lifting gantry (1) which can move on caterpillars or tracks, as well as a number of lifting trolleys (2), at least two, which depends on the size of the element of track (5).   2 Installation according to claim 1, characterized in that it further comprises a number of lifting gear (3) of track construction elements, which depends on the dimensions of the track element (5), and that these lifting devices (3) are provided with undercarriages (9) to move on the main track (4) and undercarriages (10) to move on auxiliary rails (11) posed on both sides. other of the main track (4), the lifting elements (3) being adapted for transport on the lift carriages   (2) with a track element (5).   3 Installation according to one of the claims   1 or 2, characterized in that the transport and lifting frame (1) comprises a base frame (12) carrying a longitudinal main beam (26) telescopically extendable and extending in the longitudinal direction of the track, to take and carrying a track element (5), undercarriages (6) with wheels (13) for moving the gantry on the main track (4) and two vertical lift columns (40) arranged on each longitudinal side of the base frame, at a distance from each other in the longitudinal direction of the track, variable in length and each having a column member (47) axially movable in a guide column member (44) and whose foot is mounted on a crawler trolley (7), the undercarriages (6) being pivotable between a downwardly extended working position for moving the gantry on the main track (4) and a withdrawn position d in the base frame, and the lifting columns (40) being variable in length between a working position output for the movement of the gantry using caterpillars (7) and a retracted position for moving the gantry on the track principal (4).   4 Installation according to claim 3, characterized in that the two guide column members (44) on each side of the base frame (12) are attached to a transverse beam device   telescopic 16, housed on the base frame.   Apparatus according to claim 4, characterized in that the guide column members (44) of the two load-lifting columns (40) on each side of the transport and lifting frame (1) are connected to each other. the other by a rigid support frame (39) and each fixed to a beam (45) arranged transversely to the longitudinal direction of the track and axially displaceable in a transverse beam (16) of the basic frame (12).   6 Installation according to one of the claims   3 to 5, characterized in that the main longitudinal beam (26) which comprises a central element (27) mounted on the base frame (12) and a telescopic element (28) housed in each end of the central beam and capable of an exit and withdrawal movement, comprises four pairs of transversely displaceable and, if appropriate, vertically movable clamps (34, 36) arranged on the central element (27) and the telescopic elements (28), to take and carry a track element (5), and in that the main beam (26) is mounted at the center of its central element (27) on the base frame (14), pivoting in a plane parallel to that of the base frame and the the plane of the track, at a predetermined angle (), such that a precise and well-centered uplift of unformed and bulky track elements, such as the area of a heart needle, be assured.   Installation according to one of the claims   prior art, characterized in that a track element hoist (2) comprises a base frame (56) equipped with undercarriages (9) for moving the machine on the main track (4), a telescopic transverse beam (57) pivotally mounted on the base frame (56) at an angle of 900 and at each end of which is fixed a vertical load-lifting column (62) of variable length which comprises a movable member (64) at the foot of which is fixed a rolling device (10), each element (64) being movable between a retracted position which allows the lifting gear (2) to move on the main track (4), using the running gear (9) of the base frame (56), and a work output position which allows the hoist to move on the auxiliary rails (11) -situated on both sides of the way   main, using the undercarriages (10).   8 Apparatus according to claim 7, characterized in that each load-lifting column (62) is axially displaceable in a guide cylinder (60) fixed to the corresponding end of the transverse beam (57), via a cylinder hydraulic (61).   9 Installation according to one of the claims   7 or 8, characterized in that each undercarriage (10) comprises a transverse beam (65) rotatably hinged about its center about the foot-angle of the load-lifting column (62), which extends parallel to the longitudinal axis of the track when the beam (57) occupies its position perpendicular to the axis of this track and houses at each of these ends a wheel (66) through which the lifting unit (3) take support on an auxiliary rail (11).   Installation according to one of the claims   7 to 9, characterized in that the base frame (56) of the lifting unit (3) carries two pairs of lifting clamps (67) which are variable in position perpendicular to the longitudinal axis of the track and   vertically, preferably hydraulically.   11 Installation according to claim 10, characterized in that the lifting clamps (67), thanks to their vertical adjustment is a means for locking the hoist (3) on the rails of a track element (5). ), by pressure of the wheels of bearing (8) on these rails.   12 Installation according to one of the claims   characterized in that a lifting carriage (2) comprises a lifting table capable of being controlled remotely.   13 Process that can be run using   the installation according to one of claims 1 to 12,   characterized in that for transporting a track element (5) between a mounting area of the track element and the start of the installation or cutting site, forming a transport train of the track element (5) to install or substitute, o this element rests on the transport trolleys (2) and o the transport and hoist gantry (1) is used as a pulling or pushing machine moving on the main track (4) ; if lifting gear (3) of the track element is used, these are taken to the lift carriages (2); for transporting the track element (5) between the beginning of the cut and the installation position therein and for raising or lowering the track element (5) in the cut, the transport gantry is moved and lifting (1) to move on its crawler carriages (7) in the cut; if lifting devices (3) are used, auxiliary rails (11) are laid in the area of the main track (4) in front of the section and in the area adjacent to the section, on both sides of the track main, and the lifting gear (3) is moved on these auxiliary rails (11), and the track construction element (5) is then carried by the transport and lifting gantry (1).   as well as by the lifting gear (3).   Method according to claim 13, characterized in that after raising the lift table of a lifting carriage (2) in its extended position for receiving a track element (5), an element of hoist (3) above the lift truck (2), the hoist remains supported on the track element (5) by means of these undercarriages (9) and its lifting columns of load (62) are retracted until their undercarriages (10) are above the track element and in that the transverse beam (57) is variable in length and carrying the load-lifting columns (62) is pivoted in its parallel position to the longitudinal axis of the track.   Method according to one of Claims 13 to   14, characterized in that a hoist (3) is locked on a track element (5) after being taken over the rails by the lifting clamps (67) of the machine (3), on the rails of the track element (5) by applying under pressure the wheels of the undercarriages (9) to the rails of the track element (5), to the   following a movement up the clamps.   Method according to one of claims 13 to   , characterized in that on raising of a track element (5) during which the lifting gear (3) bears on the auxiliary rails (11), the basic frame (56) by actuating the rollers (61) and then causing the telescopic element to exit the riser charge (62).   Method according to claim 13, characterized in that, for the laying of a track element in the cut made in the main track (4), the operations will be executed in the reverse order of that indicated in claim 13.