EP2154047A1 - Bolting system for points changing in railways - Google Patents
Bolting system for points changing in railways Download PDFInfo
- Publication number
- EP2154047A1 EP2154047A1 EP08761583A EP08761583A EP2154047A1 EP 2154047 A1 EP2154047 A1 EP 2154047A1 EP 08761583 A EP08761583 A EP 08761583A EP 08761583 A EP08761583 A EP 08761583A EP 2154047 A1 EP2154047 A1 EP 2154047A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- box
- bar
- point
- slider
- roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims description 3
- 230000000284 resting effect Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 230000007246 mechanism Effects 0.000 abstract description 14
- 238000012423 maintenance Methods 0.000 description 5
- 241000269350 Anura Species 0.000 description 3
- 230000036961 partial effect Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 241001669679 Eleotris Species 0.000 description 2
- 239000003831 antifriction material Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 206010012411 Derailment Diseases 0.000 description 1
- 241000950314 Figura Species 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 TeflonĀ® Polymers 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003100 immobilizing effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/10—Locking mechanisms for points; Means for indicating the setting of points
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/02—Mechanical devices for operating points or scotch-blocks, e.g. local manual control
Definitions
- the present invention relates to a bolting system for points changing in railways, which presents among other characteristics greater stability and security of functioning, along with ease of fitting and removal, moreover requiring minimum maintenance.
- This invention is also applicable to movable point frogs.
- railway traffic needs rails which are displaced (movable rails or points) so that trains can pass from one track to another, along with movable points which move from one position to another in synchrony with the switches.
- movable rails Owing to the requirements of these movable rails, railway junctions are among the most dangerous sections of track, where the risk of derailment is high.
- the movable rails (points) In order to minimize these risks, the movable rails (points) have to be perfectly fixed in their final positions, without being affected by vibrations and blows produced by the passage of the trains.
- the bolting system for points changing in railways and in movable point frogs forming the object of the invention, has to achieve a synchronous movement of the two points, and also, once positioned and the force pushing them has disappeared, they have to remain in that position without being affected by vibrations and blows produced by the passage of the trains.
- the mechanisms In order to achieve a minimum or zero maintenance, the mechanisms have to be sealed to prevent the entry of dust and water.
- the movable pieces have to slide on anti-friction materials, (Teflon, molybdenum, bronze, etc.) and, where possible, they have to roll.
- the system is conceived for being used in a hollow sleeper, or close to one of them. It consists of two independent bolt bodies, one for each point, but joined by an intermediate bar adjustable in length.
- Each body is suspended from the shoe of the counterpoint (fixed rail), by means of a fastening achieved with clamps, which avoids the need to drill the rail in order to be able to fix a bolt.
- Attached to the point is an appendage which is fixed to the shoe thereof with a single drill-hole.
- the expansion due to temperature changes of the point produces the displacement of the point with respect to the appendage, but the bolt permits this since provision has already been made for the bolt-point union to be carried out by means of a rotating pulley-wheel via which the pushing and pulling of the point takes place.
- the piece which produces the locking of the mechanism is a roller which moves between two fixed positions where it remains recessed and as it moves it mechanically joins two different pieces: slider and bar, as we will see later on in relation to the figures.
- the roller When the point is coupled, in other words, in contact with the counterpoint, the roller is recessed between the piece known as the box and the slider, It locks them together and, as it has no possibility of movement, it keeps them joined together and fixed.
- the piece known as the bar is moved by an external actuating mechanism and has a rabbet where the roller can be housed.
- the roller "fallsā and then the slider and the box cease to be locked together. The point is therefore free.
- the roller locks the bar with the slider and, as the bar carries on moving, it drags the slider and this in turn drags the point.
- the actuating system for carrying out the points change can be of the hydraulic type and in this case the bar-slider unit is going to act as a hydraulic cylinder when it receives fluid from the outside. As the maneuvering and retention stresses do not usually exceed 900 kg, a low pressure circuit can be used.
- the invention can be applicable to a movable point frog, which is displaced from one position to another (open-closed) by means of the bolting system forming the object of the invention, in which the movable point is replaced by a switch.
- the bar carries two rabbets in which can be housed partially and sequentially two horizontal rollers which move in respective transversal sheaves of the slider, instead of there just being one roller as occurs in the previous embodiment.
- this second roller By using this second roller, the distance which the point moves manages to be increased up to 160 mm and, moreover, a smoothness and precision are achieved in the mechanism, as we have already said.
- the slider moves freely within the box, the distance between the rollers being less than that existing between the rabbets of the box.
- the two horizontal rollers fix the closing and opening positions of the corresponding point.
- the closing position is obtained with the bar in the withdrawn position and the closing roller (the rear or outer one of the unit) being advanced with respect to the rear rabbet of the bar and with the rear rabbet of the box. If the bar is made to advance in order to carry out the change of points, the closing roller falls into the rear rabbet of said bar and the opening roller is simultaneously forced to move by the roller, dragging along the slider until the forward rabbet of the box is reached, at which moment this opening roller is forced to leave the rabbet of the bar and become housed in the forward rabbet of the box. When the bar advances even more, the locking in the maximum separation of the point with respect to the counterpoint is achieved and maintained.
- This tightening roller Is fitted horizontally and can be moved vertically by rolling on a vertical plaque of the appendage, thereby solving the problems of expansion of the point, since the support carrying the plate spring includes a coaxial annular piece freely rotating in slider and with a radial arm which materializes the thrusting piece.
- the appendage integral with the point includes a lower extension where a horizontal roller is fitted which is able to be housed below a projection of the box, thus immobilizing the point in the closed position.
- the bolting system for points changing in railways and/or movable point frogs which the invention proposes, consists of two independent bolt bodies referenced with 1 and 2, one for each point 3 or movable rail, each of them being suspended from the shoe of the counterpoint 4 or fixed rail and joined together by the intermediate bar 5 adjustable in length.
- Each body 1 is suspended from the shoe 6 by means of a fastening achieved with clamps 7 and 8, which avoids the need to drill the rail 4. Nevertheless, other fastening devices can also be used.
- the clamps 7 and 8 are joined to the piece known as the box 9 by means of screws or threaded studs 10 and locking nuts 11, passing through the holes made in them and in the lugs 12 of the box 9.
- the box 9 offers the hole 13 ( figure 8 ) for passage of the slider 14 which runs transversely to the fixed rail 4 and which offers a tubular configuration since the bar 15 passes through its center.
- the bar 15 of the bolt body 1 (the one on the right of figure 1 ) is connected to the actuating mechanism of the points change, of the hydraulic, mechanical or similar type, and its movement produces the opening or closing of the point according to conjugated movements in both bolt bodies, since the bars 15 are those which are joined together via the intermediate bar 5 ( figure 1 ).
- the support 16 Fixed in the slider 14 is the support 16 which is integral above with the appendage 17 to which the point 3 is attached. When the slider 14 is linearly displaced the point 3 does so at an angle in order to move closer to or further away from the counterpoint 4.
- roller 18 arranged horizontally and transversely in the interior space of the box 9 where it can be displaced vertically in a transversal sheave of the slider 14, resting in turn on the bar 15.
- the box 9 has two separated grooves 20 and 21 in its upper wall in which the roller 18 can be partially housed in the most elevated position of the latter, corresponding to the locking of the point 3 in the closed position ( figure 2 ) or open ( figure 6 ).
- the reference 22 designates the semicylindrical rabbet which the bar 15 presents in its transversal arrangement, in which the roller 18 is able to be partially housed so that it can thus be transported from one position to another dragging the slider 14 with it.
- said rabbet figures 3 and 4
- it remains tangential to the upper wall of the box 9 and can displace the slider 14 when the bar 15 does so.
- the slider 14 does so simultaneously because the roller is dragging it due to the fact that it at all times remains in the sheave 19 (as shown in figure 4 ).
- the attachment of the support 1 with the appendage is carried out by means of the pulley-wheel 25 arranged in the vertical pin 26 inserted in said support 16.
- the pulley-wheel 25 moves in a slot 27 of the appendage 17.
- the expansion due to temperature changes of the point 3 are corrected owing to the fact that the drag is carried out with the pulley-wheel 25 which can roll.
- the appendage 17 is attached to the point 3 by means of the screw 28 passing through a hole in the shoe of the point 3 (see for example figure 2 ).
- the point 3 is seated and slides during its movements of the points change on a guide 29 since the mechanism Is located between two sleepers or in a hollow sleeper as we have said earlier.
- each one of the bolt bodies 32 and 33 presents, each one of them being linked to the respective movable rail or point 34 and secured to the shoe 35 of the respective fixed rail or counterpoint 36.
- Both bolt bodies 32 and 33 are joined to each other by the tie rod or intermediate bar 37 which is adjustable in length and whose ends are attached via a cardan joint to the bars 38 which traverse them axially.
- the free end of one of the bars 38 is connected to an external mechanism for simultaneously carrying out the movement of the points 34, one moving them away from the counterpoint 36 and the other moving them closer to it.
- the box 39 is tubular and moving in its axial gap is the slider 43, also tubular and sliding inside that is the bar 38 referred to above, connected to the actuating mechanism for the points change.
- the support 44 Fixed in the slider 43 is the support 44 formed by an annular piece 45 coaxial and enveloping the slider 43 and linked linearly to its end though with free rotation; and a radial arm which materializes a thrusting piece 46 to which is connected an appendage 47 integral with the point 34 (though these means of union have not been represented due to being conventional).
- the point 34 does so since it is integral with it, in order to move closer to or further away from the counterpoint 36.
- This movement was effected in the first form of embodiment with a single horizontal roller 18 which moves between two fixed positions in which it is able to remain recessed.
- the bar 38 in order to improve this functioning and make it smoother and more precise, in accordance with this second form of embodiment, provision is made for the bar 38 to include two wide rabbets 48 and 49 in which it is possible to house the respective rollers 50 and 51 which move vertically in separate transversal sheaves 52 and 53 of the slider 43. These rollers in turn interact with the semicylindrical rabbets 54 and 55 of the box 39.
- the dragging of the slider 43 is or is not obtained when the bar 38 is slid, as we will see further below.
- Figure 11 shows the position of the point 34 coupled to the counterpoint 36 and locked or belted, corresponding to the initial or starting position as far as achieving the change of points as shown in figure 14 .
- the bar 38 which is in an end position (towards the right) with respect to the fixed position of the box 39, prevents the falling of the closing roller 50 since it is retained due to resting on the cylindrical part of the former and therefore the slider 43 is mechanically joined to the box 39 and is thus kept in this locking or bolting position because the thrusting piece 46 maintains the point 34 against the counterpoint 36.
- An elastic contact pressure is obtained due to the fact that the support 44 and more specifically its thrusting piece 46 acts on some plate springs 56 which in turn transmit the effort to a spring-holder 57 threaded to the yoke 58 which supports a horizontal tightening roller 59 which is the element that presses directly on the vertical plaque 60 of the appendage 47 integral with the point 34, and keeps it firmly locked.
- the bar 38 continues advancing and it is the opening roller 51 which drags the slider 43 since the closing roller 50 passes tangentially to the upper wall of the box 39 and does not do any dragging at all.
- the point 34 continues to separate from the counterpoint 36.
- the bar 38 continues to move until the opening roller 51 meets the sheave 55 which the box 39 has in its front zone, occupying it and permitting the bar 38 to pass beneath (see figure 14 ). In this position, the point 34 becomes locked again, this time in the open position.
- the intermediate tie bar 37 which joins the two bolt bodies 32 and 33 transmits the movement to the second body 33, with which the latter moves in a manner symmetric to the first (when one opens the point 34, the other closes it).
- plate springs 56 in series, in order to press the point 34 against the counterpoint 36, permits considerable tightening efforts to be achieved between these elements with little travel.
- the thruster 46 is a freely rotating piece with respect to the slider 43 since it is linked to the freely rotating bushing 45. If the point 34 advances due to expansions, it pulls on the appendage 47, this on the yoke 58 and the yoke 58 on the spring-holder 57.
- the spring-holder 57 which is embedded in the thruster 47 with the anti-friction bushing, longitudinally pulls on the thruster 46, forcing it to rotate. But the spring-holder 57 in turn rotates inside this anti-friction bushing, with which the tightening roller 59 is always in the horizontal position pressing on the plate 50 of the appendage 47, though it goes up and down rolling in it and therefore it maintains the tightening between the point 34 and the counterpoint 36.
- the lower part of the appendage 47 includes an elevation roller 61 which fits below a lug 62 included in the box 39. With this, the oscillations of the point 34 produced by the passing of trains are prevented.
- the tightening between the point 34 and the counterpoint 36 is regulated by threading the yoke 58 to a greater or lesser degree inside the spring-holder 57.
- the spring-holder 57 is more introduced into the thruster 46 adopting a floating arrangement owing to the elasticity of the plate springs 56, while in figure 14 , since the point 34 is separated, the spring-holder 57 is displaced towards the right by the elastic pressure of the plate springs 56, until it meets up against the closing cover 63 threaded to the mouth of the thruster 46.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Railway Tracks (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
- Bearings For Parts Moving Linearly (AREA)
- Chutes (AREA)
- Chain Conveyers (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
Description
- As stated in the title of this descriptive specification, the present invention relates to a bolting system for points changing in railways, which presents among other characteristics greater stability and security of functioning, along with ease of fitting and removal, moreover requiring minimum maintenance. This invention is also applicable to movable point frogs.
- It is also the object of the invention to achieve a greater smoothness in functioning, along with optimum precision in the closed and open positions of the point, and to prevent oscillations of the point produced when trains pass over it.
- Railway traffic needs rails which are displaced (movable rails or points) so that trains can pass from one track to another, along with movable points which move from one position to another in synchrony with the switches. Owing to the requirements of these movable rails, railway junctions are among the most dangerous sections of track, where the risk of derailment is high. In order to minimize these risks, the movable rails (points) have to be perfectly fixed in their final positions, without being affected by vibrations and blows produced by the passage of the trains.
- The bolts traditionally used are cheap, they have the problem of requiring frequent maintenance, and they perform badly.
- An improvement in this system is that developed in patents E00941990, E02028920 or E91041200, in which the elements that are used in the maneuver roll rather than slide, which minimizes stresses, as well as not requiring periodical greasing. Nevertheless, by applying an exterior force on the point of union of the two rails, one can manage to separate them and the point is only locked in the closed position. Moreover, their tightening is affected by changes in gauge.
- In general terms, the bolting system for points changing in railways and in movable point frogs, forming the object of the invention, has to achieve a synchronous movement of the two points, and also, once positioned and the force pushing them has disappeared, they have to remain in that position without being affected by vibrations and blows produced by the passage of the trains.
- In order to achieve a minimum or zero maintenance, the mechanisms have to be sealed to prevent the entry of dust and water. The movable pieces have to slide on anti-friction materials, (Teflon, molybdenum, bronze, etc.) and, where possible, they have to roll.
- Owing to the fact that the intervals for carrying out maintenance on tracks are becoming increasingly less, easy fitting and removal has to be achieved, so that, if a failure occurs in the bolt, it can be quickly replaced by a spare so that the track is left in a condition for being used. The broken piece is removed and repaired. Achieving easy fitting and removal is only possible if the mechanism is a single body which is extracted by releasing a few pieces in a reasonably short space of time.
- The system is conceived for being used in a hollow sleeper, or close to one of them. It consists of two independent bolt bodies, one for each point, but joined by an intermediate bar adjustable in length.
- Being independent, they can be easily removed. Moreover, they are not affected by variations in gauge that take place, nor do they need any precision in the alignment and leveling between the two bodies.
- Each body is suspended from the shoe of the counterpoint (fixed rail), by means of a fastening achieved with clamps, which avoids the need to drill the rail in order to be able to fix a bolt.
- Attached to the point (movable rail) is an appendage which is fixed to the shoe thereof with a single drill-hole. The expansion due to temperature changes of the point produces the displacement of the point with respect to the appendage, but the bolt permits this since provision has already been made for the bolt-point union to be carried out by means of a rotating pulley-wheel via which the pushing and pulling of the point takes place.
- Described below is the kinematic chain of functioning. The piece which produces the locking of the mechanism is a roller which moves between two fixed positions where it remains recessed and as it moves it mechanically joins two different pieces: slider and bar, as we will see later on in relation to the figures.
- When the point is coupled, in other words, in contact with the counterpoint, the roller is recessed between the piece known as the box and the slider, It locks them together and, as it has no possibility of movement, it keeps them joined together and fixed.
- The piece known as the bar is moved by an external actuating mechanism and has a rabbet where the roller can be housed. When that rabbet passes below the roller, the roller "falls" and then the slider and the box cease to be locked together. The point is therefore free. At that moment, the roller locks the bar with the slider and, as the bar carries on moving, it drags the slider and this in turn drags the point.
- When the point reaches the open position, it is locked, and the roller rises up towards a groove that is in the box, again locking the slider with the box, and so the point also remains locked in that position. If it is wished for the point not to remain locked in the open position, it suffices to make an adjustment in that regard without having to change any piece, simply by means of adjustment.
- The actuating system for carrying out the points change can be of the hydraulic type and in this case the bar-slider unit is going to act as a hydraulic cylinder when it receives fluid from the outside. As the maneuvering and retention stresses do not usually exceed 900 kg, a low pressure circuit can be used.
- As has been stated earlier, the invention can be applicable to a movable point frog, which is displaced from one position to another (open-closed) by means of the bolting system forming the object of the invention, in which the movable point is replaced by a switch.
- With this arrangement, the following improvements are obtained:
- There is no need to drill the counterpoints.
- The changes in the gauge do not affect its tightening.
- There is no need for greasing or maintenance.
- It minimizes the maneuvering stresses due to using rolling elements and anti-friction materials.
- Its adjustment is done by means of threaded elements.
- The point is locked in the two positions (open and closed) or just in the closed position, the bolt can be trailable, according to the wishes of the railway authorities.
- The expansions of the tracks are not affected.
- It is simple to fit and remove on the track.
- Certain improvements in the structure offered by the bolt bodies are also considered:
- The bar carries two rabbets in which can be housed partially and sequentially two horizontal rollers which move in respective transversal sheaves of the slider, instead of there just being one roller as occurs in the previous embodiment. By using this second roller, the distance which the point moves manages to be increased up to 160 mm and, moreover, a smoothness and precision are achieved in the mechanism, as we have already said.
- When the rollers are housed in the rabbets of the bar, the slider moves freely within the box, the distance between the rollers being less than that existing between the rabbets of the box.
- The two horizontal rollers fix the closing and opening positions of the corresponding point. The closing position is obtained with the bar in the withdrawn position and the closing roller (the rear or outer one of the unit) being advanced with respect to the rear rabbet of the bar and with the rear rabbet of the box. If the bar is made to advance in order to carry out the change of points, the closing roller falls into the rear rabbet of said bar and the opening roller is simultaneously forced to move by the roller, dragging along the slider until the forward rabbet of the box is reached, at which moment this opening roller is forced to leave the rabbet of the bar and become housed in the forward rabbet of the box. When the bar advances even more, the locking in the maximum separation of the point with respect to the counterpoint is achieved and maintained.
- This arrangement of rabbets and two rollers leads to a functioning that is very smooth and secure in both positions.
- The supports that are found at the forward end of the sliders and integral with them force the point under pressure against the counterpoint in the closed position, which is advantageously carried out by means of some plate springs fitted in the support and which push on a yoke which in turn pushes on a tightening roller which makes direct contact with the appendage which is integral with the point. This tightening roller Is fitted horizontally and can be moved vertically by rolling on a vertical plaque of the appendage, thereby solving the problems of expansion of the point, since the support carrying the plate spring includes a coaxial annular piece freely rotating in slider and with a radial arm which materializes the thrusting piece.
- In order to avoid undesired vibrations when trains pass, the appendage integral with the point includes a lower extension where a horizontal roller is fitted which is able to be housed below a projection of the box, thus immobilizing the point in the closed position.
- Provision has also been made so that, in order to facilitate the elevation and descent movements of the horizontal opening and closing rollers during the advance or withdrawal movement of the bar, the rabbets of the latter are made to be wide, therefore having a greater size than those of the box which are semicylindrical, In this way, the roller guided by the slider can easily fall into the rear rabbet of the bar, and at the same time the opening rabbet is more easily raised when the forward rabbet of the box is reached in the advance of the bar in order to reach the open bolting position.
- In order to facilitate the understanding of the characteristics of the invention and forming an integral part of this descriptive specification, some sheets of plans are attached in which the figures the following has been represented on an illustrative and non-limiting basis:
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Figure 1 .- Is a longitudinal elevation view, transverse to the line, of the independent bolt bodies joined together by means of the intermediate bar, which interact in the bolting system for points changing in accordance with the invention, being coupled to the respective tracks of the railway line. -
Figure 2 .- Is an elevation view of one of the two bolt bodies in the closed or contact position of the point with respect to the fixed rail or counterpoint, and of the locking of the mechanism. -
Figures 3 to 5 .- Are views similar tofigure 2 , of different intermediate positions from which the points change starts. -
Figure 6 .- Is a view similar tofigures 2 to 5 , once the points change has taken place and the position has been reached of locking the mechanism in open point. -
Figure 7 .- Is a partial view in perspective of that shown infigure 6 . -
Figure 8 .- Is a partial view in perspective from the right side offigure 7 . -
Figure 9 .- Is a partial view in perspective from a raised point of the samefigure 7 , but in the points closed position, according tofigure 2 . -
Figure 10 .- Is a view similar tofigure 1 of a bolting system for points changing according to a second form of embodiment which includes some improvement in the bolt bodies. - Figura 11.- Is an enlarged view of one of the bolt bodies of
figure 10 , in the closed position with locking, where the point is forced under pressure against the counterpoint. -
Figure 12 .- Is a view similar tofigure 11 , in an intermediate position after starting the opening operation when the bar advances, in this second form of embodiment. -
Figure 13 .- Is a view similar tofigure 12 in another more advanced phase of opening, in this second form of embodiment. -
Figure 14 .- Is a view similar tofigure 12 in the final position of opening with locking, in this second form of embodiment. - Making reference to the numbering adopted in the figures and especially in relation to
figure 1 , we can see how the bolting system for points changing in railways and/or movable point frogs, which the invention proposes, consists of two independent bolt bodies referenced with 1 and 2, one for eachpoint 3 or movable rail, each of them being suspended from the shoe of thecounterpoint 4 or fixed rail and joined together by theintermediate bar 5 adjustable in length. - As these bodies comprise the same pieces and their functioning is identical though conjugate, since when one opens the other closes and reciprocally, in what follows and in
figures 2 to 9 we will refer to just one of these bodies, specifically the one on the right which is referenced with 1. - Each
body 1 is suspended from theshoe 6 by means of a fastening achieved withclamps rail 4. Nevertheless, other fastening devices can also be used. - The
clamps box 9 by means of screws or threadedstuds 10 and lockingnuts 11, passing through the holes made in them and in thelugs 12 of thebox 9. - The
box 9 offers the hole 13 (figure 8 ) for passage of theslider 14 which runs transversely to the fixedrail 4 and which offers a tubular configuration since thebar 15 passes through its center. - The
bar 15 of the bolt body 1 (the one on the right offigure 1 ) is connected to the actuating mechanism of the points change, of the hydraulic, mechanical or similar type, and its movement produces the opening or closing of the point according to conjugated movements in both bolt bodies, since thebars 15 are those which are joined together via the intermediate bar 5 (figure 1 ). - Fixed in the
slider 14 is thesupport 16 which is integral above with theappendage 17 to which thepoint 3 is attached. When theslider 14 is linearly displaced thepoint 3 does so at an angle in order to move closer to or further away from thecounterpoint 4. - The transmission of this movement is done by means of the
roller 18 arranged horizontally and transversely in the interior space of thebox 9 where it can be displaced vertically in a transversal sheave of theslider 14, resting in turn on thebar 15. - The
box 9 has two separatedgrooves roller 18 can be partially housed in the most elevated position of the latter, corresponding to the locking of thepoint 3 in the closed position (figure 2 ) or open (figure 6 ). - The
reference 22 designates the semicylindrical rabbet which thebar 15 presents in its transversal arrangement, in which theroller 18 is able to be partially housed so that it can thus be transported from one position to another dragging theslider 14 with it. When it is housed in said rabbet (figures 3 and4 ), it remains tangential to the upper wall of thebox 9 and can displace theslider 14 when thebar 15 does so. - With this arrangement the functioning is as follows:
- Starting from the locking position of
figure 2 where theroller 18 is secured in thegroove 20, it can be seen how it in turn rests in thebar 15 remaining thus until the mechanism connected to thebar 15 is acted on In order to make the points change. - In these conditions, when the advance movement of the
bar 15 towards the left offigure 2 begins, therabbet 22 reaches the point in which it faces theroller 18 and this falls out of thegroove 20 of thebox 9 as seen infigure 3 . - As the
bar 15 continues to advance, theslider 14 does so simultaneously because the roller is dragging it due to the fact that it at all times remains in the sheave 19 (as shown infigure 4 ). - An instant prior to the
roller 18 occupying the position offigure 5 , it reaches thegroove 21 of thebox 9 and simultaneously reaches the point of making contact with thebox 9 and thebuffer 23 secured to the right part of theslider 14 and the movement of the latter is halted. This movement causes theroller 18 to rise up as shown exactly infigure 5 . As thebar 15 continues to advance the system becomes locked because the position offigure 6 has been reached which prevents theroller 18 from descending. - When the same thing occurs in the opposite direction for a new points change, the movements are in reverse though it is the
buffer 24 on the left of theslider 14 which makes contact with thebox 9 at the moment in which theroller 18 meets up with thegroove 20 of thebox 9. In this case, it is theneedle 3 which determines the maximum travel by interacting with thecounterpoint 4. - As can be seen more clearly in
figures 7 and9 , the attachment of thesupport 1 with the appendage is carried out by means of the pulley-wheel 25 arranged in thevertical pin 26 inserted in saidsupport 16. The pulley-wheel 25 moves in aslot 27 of theappendage 17. The expansion due to temperature changes of thepoint 3 are corrected owing to the fact that the drag is carried out with the pulley-wheel 25 which can roll. - The
appendage 17 is attached to thepoint 3 by means of thescrew 28 passing through a hole in the shoe of the point 3 (see for examplefigure 2 ). - The
point 3 is seated and slides during its movements of the points change on aguide 29 since the mechanism Is located between two sleepers or in a hollow sleeper as we have said earlier. - As can be seen in
figure 2 , when the point is closed or pressing against the fixed rail orcounterpoint 4, it does so under pressure by means ofsprings 30 belonging to the regulatingpiece 31 for tightening of thepoint 3 with respect to thecounterpoint 4. In this position (figure 2 ) thesupport 16 remains slightly separated from thebuffer 24 for regulating the thrust, while as can be seen infigures 3 to 6 when thepoint 3 becomes separated from thecounterpoint 4 thesupport 1 makes contact with thebuffer 24 by the action of thesesprings 30. - Making reference now to
figures 10 to 14 and in particular with regard tofigure 10 , the improvements introduced into this second form of embodiment are located in the structure which each one of thebolt bodies point 34 and secured to theshoe 35 of the respective fixed rail orcounterpoint 36. Bothbolt bodies intermediate bar 37 which is adjustable in length and whose ends are attached via a cardan joint to thebars 38 which traverse them axially. The free end of one of thebars 38 is connected to an external mechanism for simultaneously carrying out the movement of thepoints 34, one moving them away from thecounterpoint 36 and the other moving them closer to it. - In
figure 10 the point on the right, governed by thebolt body 32, is in the closed position and that of thebolt body 33 is in the open position. As bothbolt bodies - In the first form of embodiment of
figures 1 to 9 , there existed this same arrangement, as well as the general structure of thebolt bodies box 39 intervenes which is secured to theshoe 35, on one side with theclamps 40 and screws 41 and on the other side with theprojection 42 formed in it. - The
box 39 is tubular and moving in its axial gap is theslider 43, also tubular and sliding inside that is thebar 38 referred to above, connected to the actuating mechanism for the points change. - Fixed in the
slider 43 is thesupport 44 formed by anannular piece 45 coaxial and enveloping theslider 43 and linked linearly to its end though with free rotation; and a radial arm which materializes a thrustingpiece 46 to which is connected anappendage 47 integral with the point 34 (though these means of union have not been represented due to being conventional). When theslider 43 moves linearly, thepoint 34 does so since it is integral with it, in order to move closer to or further away from thecounterpoint 36. - This movement was effected in the first form of embodiment with a single
horizontal roller 18 which moves between two fixed positions in which it is able to remain recessed. - In order to improve this functioning and make it smoother and more precise, in accordance with this second form of embodiment, provision is made for the
bar 38 to include twowide rabbets respective rollers transversal sheaves slider 43. These rollers in turn interact with thesemicylindrical rabbets box 39. Depending on the relative position of therollers wide rabbets bar 38 and of thesemicylindrical rabbets box 39, the dragging of theslider 43 is or is not obtained when thebar 38 is slid, as we will see further below. -
Figure 11 shows the position of thepoint 34 coupled to thecounterpoint 36 and locked or belted, corresponding to the initial or starting position as far as achieving the change of points as shown infigure 14 . - The
bar 38, which is in an end position (towards the right) with respect to the fixed position of thebox 39, prevents the falling of the closingroller 50 since it is retained due to resting on the cylindrical part of the former and therefore theslider 43 is mechanically joined to thebox 39 and is thus kept in this locking or bolting position because the thrustingpiece 46 maintains thepoint 34 against thecounterpoint 36. An elastic contact pressure is obtained due to the fact that thesupport 44 and more specifically its thrustingpiece 46 acts on some plate springs 56 which in turn transmit the effort to a spring-holder 57 threaded to theyoke 58 which supports ahorizontal tightening roller 59 which is the element that presses directly on thevertical plaque 60 of theappendage 47 integral with thepoint 34, and keeps it firmly locked. - When the
bar 38 is moved by about 30 mm to the left (position offigure 12 ) when the points change is carried out, the closingroller 50 falls into thewide rabbet 48 of thebar 38 being released from thesemicylindrical rabbet 54 of thebox 39 and the entire mechanism is unlocked. - In
figure 13 , thebar 38 continues advancing and it is the openingroller 51 which drags theslider 43 since the closingroller 50 passes tangentially to the upper wall of thebox 39 and does not do any dragging at all. Thepoint 34 continues to separate from thecounterpoint 36. Thebar 38 continues to move until the openingroller 51 meets thesheave 55 which thebox 39 has in its front zone, occupying it and permitting thebar 38 to pass beneath (seefigure 14 ). In this position, thepoint 34 becomes locked again, this time in the open position. - The
intermediate tie bar 37 which joins the twobolt bodies second body 33, with which the latter moves in a manner symmetric to the first (when one opens thepoint 34, the other closes it). - The use of plate springs 56 in series, in order to press the
point 34 against thecounterpoint 36, permits considerable tightening efforts to be achieved between these elements with little travel. - The location of those plate springs 56 is more advantageous than that considered in the first form of embodiment, where there existed
springs 30 located at the height of the slider 14 (figure 3 ) and the torque caused by the tightening between thepoint 3 andcounterpoint 4 prevented the necessary displacement of thesprings 30 for their correct functioning. By locating them now at the height of thepoint 34, the torque does not affect the plate springs 56. - In order to permit the free expansion of the point 34 (in the longitudinal direction with respect to the track and perpendicular to the plane of the attached drawings) the
thruster 46 is a freely rotating piece with respect to theslider 43 since it is linked to the freely rotatingbushing 45. If thepoint 34 advances due to expansions, it pulls on theappendage 47, this on theyoke 58 and theyoke 58 on the spring-holder 57. - The spring-
holder 57, which is embedded in thethruster 47 with the anti-friction bushing, longitudinally pulls on thethruster 46, forcing it to rotate. But the spring-holder 57 in turn rotates inside this anti-friction bushing, with which the tighteningroller 59 is always in the horizontal position pressing on theplate 50 of theappendage 47, though it goes up and down rolling in it and therefore it maintains the tightening between thepoint 34 and thecounterpoint 36. - In the closed position of the point 34 (
figure 11 ), it can furthermore be seen that the lower part of theappendage 47 includes anelevation roller 61 which fits below alug 62 included in thebox 39. With this, the oscillations of thepoint 34 produced by the passing of trains are prevented. - It can also be stated that in accordance with the invention the tightening between the
point 34 and thecounterpoint 36 is regulated by threading theyoke 58 to a greater or lesser degree inside the spring-holder 57. Infigure 11 the spring-holder 57 is more introduced into thethruster 46 adopting a floating arrangement owing to the elasticity of the plate springs 56, while infigure 14 , since thepoint 34 is separated, the spring-holder 57 is displaced towards the right by the elastic pressure of the plate springs 56, until it meets up against the closingcover 63 threaded to the mouth of thethruster 46.
Claims (13)
- BOLTING SYSTEM FOR POINTS CHANGING IN RAILWAYS, which, characterized in that it comprises two independent bolt bodies (1, 2, 32, 33), one for each point or movable rail (3, 34), linked by an intermediate bar (5, 37) of adjustable length and arranged transversely to the line, said bolt bodies (1, 2, 32, 33) being simultaneously displaced by a device having mechanical or hydraulic actuation, each bolt body (1, 2, 32, 33) being suspended from the shoe (6, 35) of the counterpoint or fixed rail (4, 36) and formed by a box (9, 39) provided with means of fastening to the shoe (6, 35) of the counterpoint (4, 36); there existing a slider (14, 43) which slides within the box (9, 39) and which at its end bears a support (16, 44) integral with it to which is secured the point (3, 34); provision having been made for the displacement of the sliders (14, 43) and therefore that of the points (3, 34) to be effected by means of separate bars (15, 38) which axially traverses the sliders (14, 43) and with which they are able to be axially locked; each slider (14, 43) adopting two fixed positions with respect to the respective box (9, 39), corresponding to the ends of travel of the angular movement of the point (3, 34).
- BOLTING SYSTEM FOR POINTS CHANGING IN RAILWAYS, according to claim 1, characterized in that the respective bars (15, 38) of each bolt body (1, 2, 32, 33) are joined together by said intermediate bar (5, 37) of adjustable length and one of them Is in turn joined to the actuating device.
- BOLTING SYSTEM FOR POINTS CHANGING IN RAILWAYS, according to claim 2, characterized in that each bar (15) is the carrier of a transversal rabbet (22) in which can be partially housed a horizontal roller (18) located in a transversal sheave (19) of the slider (14) and in this position the slider (14) slides within the box (9).
- BOLTING SYSTEM FOR POINTS CHANGING IN RAILWAYS, according to claim 3, characterized in that the box (9) possess two grooves (20, 21) axially separated, in which the roller (18) can be housed in order to respectively fix the limit positions of the locking of the change of points (3) when a buffer element (23, 24) integral with the slider meets up against one or the other end of the box (9), at which moment the roller (18) faces one of the two grooves (20, 21) of the box (9) and is forced to rise In order to fit into it as the advance or withdrawal of the bar (15) continues, without the slider (14) doing so, the roller (18) in turn exiting from rabbet of the bar (15) and remaining resting on it.
- BOLTING SYSTEM FOR POINTS CHANGING IN RAILWAYS, according to claim 1, characterized in that the support (16) joining the slider (14) to the point (3) has an insertion hole for the slider (14) and integral with the latter is an appendage (17) secured by means of a screw (28) to the shoe of the point (3) and the appendage (17) being connected in articulated fashion to said support (16) by means of a pulley-wheel (25) fixed to a vertical pin (26).
- BOLTING SYSTEM FOR POINTS CHANGING IN RAILWAYS, according to claim 1, characterized in that the support (16) inserted in the slider (14) has a small axial displacement assisted by springs (30) which push it towards the buffer (23, 24) close to the fixed rail or counterpoint (4) in order to keep the point (3) in contact with the counterpoint (4) and said springs (30) being supported in a tightening unit (31) fixed in the end zone of the slider (14).
- BOLTING SYSTEM FOR POINTS CHANGING IN RAILWAYS, according to claim 2, characterized in that each bar (38) includes two rabbets (48, 49) wherein separate horizontal rollers (50. 51) which move in respective transversal sheaves (52, 53) of the slider (43) can be partially housed, being able to move freely within the box (39) in this position.
- BOLTING SYSTEM FOR POINTS CHANGING IN RAILWAYS, according to claim 7, characterized in that the box (39) is provided with two semicylindrical rabbets (54, 55) at a greater distance between each other than those of the bar (38) in which they can be partially and respectively housed, fixing the closing and opening positions of the corresponding point (34), the closing position being determined in the withdrawn condition of the bar (38) due to the closing roller (50) being advanced with respect to the rear wide rabbet (48) of the bar (38) and within the rear semicylindrical rabbet (54) of the box (39); the opening position being determined as the bar (38) initially advances and the closing roller (50) housed in the rear cylindrical rabbet (54) of the box (39) falls into its rear rabbet (48), and the opening roller (51) continuing in its wide rabbet (49) of the bar (38) without reaching the forward semicylindrical rabbet (55) of the box (39), until, having reached the latter, it is forced to overcome the rabbet (49) of the bar (38) and be housed in the forward semicylindrical rabbet (55) of the box (39), continuing thus until completing the opening travel of the bar (38) where the point (34) reaches the locking in its maximum separation from the counterpoint (36).
- BOLTING SYSTEM FOR POINTS CHANGING IN RAILWAYS, according to claim 7, characterized in that the supports (44) linked to the sliders (43) and which press the respective points (34) against the counterpoints (36) in the closed condition, do so via some plate springs (56) which push on a yoke (58) and this on a tightening roller (59) against an appendage (47) integral with the point (34).
- BOLTING SYSTEM FOR POINTS CHANGING IN RAILWAYS, according to claim 9, characterized in that the support (44) linked to each slider (43) is a freely rotating piece with respect to the latter, due to including an annular piece (45) coaxial with a radial arm which defines the thrusting piece (46) bearing the plate spring (56), the tightening roller (59) being fitted horizontally in the yoke (58) and being able to be displaced vertically by rolling on a vertical plaque (60) of the appendage (47).
- BOLTING SYSTEM FOR POINTS CHANGING IN RAILWAYS, according to claim 10, characterized in that the appendage (47) integral with the respective point (34) includes a lower extension with a horizontal roller (61) which is able to be housed beneath a projection (62) of the box (39) eliminating the vertical oscillation of the point (34) in the closed position.
- BOLTING SYSTEM FOR POINTS CHANGING IN RAILWAYS, according to claims 7 to 11, characterized in that the tightening of the point (34) against the counterpoint (36) is adjustable due to the yoke (58) being threaded in the spring-holder (57).
- BOLTING SYSTEM FOR POINTS CHANGING IN RAILWAYS, according to claim 7, characterized in that the wide rabbets (48, 49) of each bar (38) are widened or of larger size than those of the box (39) in order to freely permit the descent of the closing roller (50) as the bar (38) advances until the same roller guided by the slider (43) exceeds the rear semicylindrical rabbet (54) of the box (39); and the opening roller (51) is more easily raised due to reaching the forward semicylindrical rabbet (55) of the box (39) as the advance of the bar (38) continues.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200701371A ES2325823B1 (en) | 2007-05-18 | 2007-05-18 | ENCLOSURE SYSTEM FOR CHANGE OF NEEDLES IN RAILWAY ROADS. |
ES200801252A ES2364057B1 (en) | 2008-04-30 | 2008-04-30 | IMPROVEMENTS INTRODUCED IN THE PATENT OF INVENTION No. P200701371 / 1 BY: ENCLOSURE SYSTEM FOR CHANGE OF NEEDLES ON RAILWAYS. |
PCT/ES2008/000339 WO2008142182A1 (en) | 2007-05-18 | 2008-05-13 | Bolting system for points changing in railways |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2154047A1 true EP2154047A1 (en) | 2010-02-17 |
EP2154047A4 EP2154047A4 (en) | 2011-03-30 |
EP2154047B1 EP2154047B1 (en) | 2012-05-09 |
Family
ID=40031436
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08761583A Active EP2154047B1 (en) | 2007-05-18 | 2008-05-13 | Bolting system for points changing in railways |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP2154047B1 (en) |
AR (1) | AR066567A1 (en) |
AT (1) | ATE556914T1 (en) |
AU (1) | AU2008252869B2 (en) |
BR (1) | BRPI0811734A2 (en) |
CL (1) | CL2008001448A1 (en) |
CO (1) | CO6241144A2 (en) |
ES (1) | ES2386089T3 (en) |
MA (1) | MA31429B1 (en) |
MX (1) | MX2009012403A (en) |
WO (1) | WO2008142182A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130032675A1 (en) * | 2010-04-09 | 2013-02-07 | Amurrio Ferrocarril Y Equipos, S.A | Locking device for crossings with movable frog point |
ES2495090A1 (en) * | 2013-03-15 | 2014-09-16 | Talleres AlegrĆa S.A. | Retention device for mobile elements in railway equipment (Machine-translation by Google Translate, not legally binding) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8684318B2 (en) | 2010-09-16 | 2014-04-01 | Spx International Limited | Mechanical lock |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5730395A (en) * | 1995-11-22 | 1998-03-24 | Gec Alsthom Transport Sa | Locking apparatus for locking a point of a rail switch, apparatus for operating and locking a point, a method of installing such apparatus, and apparatus for operating and locking a rail switch |
WO1999020511A1 (en) * | 1997-10-22 | 1999-04-29 | Vae Aktiengesellschaft | Coupling device for a point actuator and/or lock |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1213950B (en) * | 1987-12-16 | 1990-01-05 | Sasib Spa | UNIVERSAL EXTERNAL CHANGEOVER DEVICE FOR RAILWAY SWITCHES |
ITSV20030006A1 (en) * | 2003-02-18 | 2004-08-19 | Alstom Transp Spa | CASE OF OPERATION FOR TRAVELING OR SIMILAR RAILWAY DIVERTERS. |
AT500296B1 (en) * | 2003-10-31 | 2006-12-15 | Vae Gmbh | DEVICE FOR LOCKING DEPOSITS OF MOVING SOFT PARTS, IN PARTICULAR SOFTENING |
-
2008
- 2008-05-13 MX MX2009012403A patent/MX2009012403A/en unknown
- 2008-05-13 WO PCT/ES2008/000339 patent/WO2008142182A1/en active Application Filing
- 2008-05-13 BR BRPI0811734-9A2A patent/BRPI0811734A2/en not_active IP Right Cessation
- 2008-05-13 ES ES08761583T patent/ES2386089T3/en active Active
- 2008-05-13 EP EP08761583A patent/EP2154047B1/en active Active
- 2008-05-13 AT AT08761583T patent/ATE556914T1/en active
- 2008-05-13 AU AU2008252869A patent/AU2008252869B2/en active Active
- 2008-05-15 AR ARP080102044A patent/AR066567A1/en unknown
- 2008-05-16 CL CL2008001448A patent/CL2008001448A1/en unknown
-
2009
- 2009-11-18 CO CO09130850A patent/CO6241144A2/en active IP Right Grant
- 2009-12-07 MA MA32399A patent/MA31429B1/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5730395A (en) * | 1995-11-22 | 1998-03-24 | Gec Alsthom Transport Sa | Locking apparatus for locking a point of a rail switch, apparatus for operating and locking a point, a method of installing such apparatus, and apparatus for operating and locking a rail switch |
WO1999020511A1 (en) * | 1997-10-22 | 1999-04-29 | Vae Aktiengesellschaft | Coupling device for a point actuator and/or lock |
Non-Patent Citations (1)
Title |
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See also references of WO2008142182A1 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130032675A1 (en) * | 2010-04-09 | 2013-02-07 | Amurrio Ferrocarril Y Equipos, S.A | Locking device for crossings with movable frog point |
EP2557228A1 (en) * | 2010-04-09 | 2013-02-13 | Amurrio Ferrocarril Y Equipos, S.a. | Interlocking device for a moveable point frog |
US8672274B2 (en) * | 2010-04-09 | 2014-03-18 | Amurrio Ferrocarrily y Equipos, S.A. | Locking device for crossings with movable frog point |
EP2557228A4 (en) * | 2010-04-09 | 2016-06-08 | Amurrio Ferrocarril Y Equipos S A | Interlocking device for a moveable point frog |
ES2495090A1 (en) * | 2013-03-15 | 2014-09-16 | Talleres AlegrĆa S.A. | Retention device for mobile elements in railway equipment (Machine-translation by Google Translate, not legally binding) |
Also Published As
Publication number | Publication date |
---|---|
ES2386089T3 (en) | 2012-08-08 |
EP2154047B1 (en) | 2012-05-09 |
WO2008142182A1 (en) | 2008-11-27 |
CL2008001448A1 (en) | 2009-09-25 |
CO6241144A2 (en) | 2011-01-20 |
AU2008252869B2 (en) | 2012-07-05 |
AU2008252869A1 (en) | 2008-11-27 |
MX2009012403A (en) | 2010-03-31 |
BRPI0811734A2 (en) | 2014-11-18 |
ATE556914T1 (en) | 2012-05-15 |
EP2154047A4 (en) | 2011-03-30 |
MA31429B1 (en) | 2010-06-01 |
AR066567A1 (en) | 2009-08-26 |
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