Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B61—RAILWAYS
  • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
  • B61F9/00—Rail vehicles characterised by means for preventing derailing, e.g. by use of guide wheels
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
  • B62D1/24—Steering controls, i.e. means for initiating a change of direction of the vehicle not vehicle-mounted
  • B62D1/26—Steering controls, i.e. means for initiating a change of direction of the vehicle not vehicle-mounted mechanical, e.g. by a non-load-bearing guide
  • B62D1/265—Steering controls, i.e. means for initiating a change of direction of the vehicle not vehicle-mounted mechanical, e.g. by a non-load-bearing guide especially adapted for guiding road vehicles carrying loads or passengers, e.g. in urban networks for public transportation

Definitions

• Retentive anti-extraction safety device for a roller guide assembly rolling on a guide rail.
• the present invention relates to an anti-extraction safety device with re-engagement for a guide assembly of a road vehicle guided by one or more rollers rolling on a guide rail, for example on the ground.
• the operation of the anti-extraction safety device according to the invention when the guide assembly accidentally escapes from the guide rail, the operation of the anti-extraction safety device according to the invention then has a re-engagement phase, notably automatic, around the upper part of the guide rail, following its constraint. downwards and at the subsequent opening of the retaining parts for their reclosing around the guide rail to ensure the anti-extraction safety function.
• the invention applies more particularly, but not exclusively, to urban public transport vehicles guided along a guide rail by means of a roller guide assembly.
• guided public transport vehicles of this type comprise a guide assembly which continuously follows a continuous guide rail, for example on the ground, throughout the vehicle journey.
• This guide assembly comprises, for example, V-shaped guide rollers or a vertical roller with a horizontal axis which roll on tracks provided on the upper part of the head of the guide rail, this guide rail comprising a sidewall rail head. under each of which is a withdrawal.
• the guide rollers are conventionally forced against the guide rail by an elastic return force directed downwards, for example by means of a spring-loaded or piston-type arm or by gravitational return of the spring head. guide.
• Such a situation may for example occur when any object is on the guide rail or in the grooves laterally bordering the head of the rail when they exist.
• chins are conventionally made in one piece with or secured to the guide rollers and rotate at the same time as the latter.
• each peripheral extension of the chins is engaged in the lower recess of the guide rail, under the corresponding projecting flank of the rail head and opposes the extraction of the assembly. guide in the event of lifting force of the rollers.
• this prior system provides no reengagement device in case of escape of the guide assembly from the guide rail.
• each roller has a fairing part fixed in rotation, whose base comprises a lower extension which is extended, in use position, under the corresponding projecting flank of the guide rail, so as to oppose any extraction force of the guide assembly.
• the fairing parts do not rotate with the guide rollers and are fixed in rotation.
• the effort required to successfully cause the extraction of the guide assembly according to the invention is therefore significantly higher since the phenomenon of engrainement is eliminated.
• Such a situation can occur for example when the head of the guide rail is damaged locally or when the guide rail is worn, defective or missing punctually in the path of the vehicle.
• the fixed fairing parts of the anti-extraction device which are highly stressed at their lower extension in the event of significant vertical force, can also be worn, deformed or bent. And, when an exceptional obstacle such as a pebble, debris or ice, is under the wheels of the vehicle or in the gaps bordering the guide rail, the vertical force exerted on the guiding device can then make it escape from the guide rail.
• the anti-extraction device of the prior art has no means of automatic re-engagement around the guide rail. Worse, by the presence of fixed lower extensions of the fairing parts, it opposes any reengagement of the guide assembly around the guide rail. The guide assembly can no longer perform its function. The vehicle is no longer guided, it incurs a significant risk of accident.
• the object of the invention is to provide an anti-extraction safety device rotating fairing parts which does not have the disadvantages of that of the prior art.
• the anti-extraction safety device advantageously comprises a means for automatically reengaging the guide assembly around the guide rail in case of involuntary escape of the device.
• the reengaging means may be controlled by an actuator. This variant is useful if, for example, the vehicle is bi-guided road mode. We then control the opening of the shutters to voluntarily leave the rail.
• the invention provides an anti-extraction safety device for a guide assembly of a road vehicle with one or more rollers for rolling on the upper part of a guide head with protruding flanks. each connected by a withdrawal with the soul of the rail.
• This guide assembly is connected to the vehicle by a deformable connection which keeps the guide head in close force towards the head of the guide rail.
• the anti-extraction safety device comprises on each side a side member which does not rotate with the corresponding roller and whose base is intended to be, in use, under the corresponding projecting flank of the guide rail in order to oppose at an extraction effort of the guide assembly.
• each of these side members comprises at least one downwardly inclined flap in the direction of the guide rail or a flap with an inclined trajectory.
• This trajectory is very important. It can be given by the inclination of the pivot axis of the flap.
• This flap is articulated to pivot about a pivot axis, between a low safety position in which its lower portion extends, in use, under the corresponding projecting flank of the guide rail so as to oppose the extracting the guide assembly; and an upper reengagement position in which its lower part is, in use, spaced laterally from the corresponding projecting flank of the guide rail, thus allowing its vertical passage relative to the guide rail and the reengagement of the guide assembly.
• the pivot axis of the flap is inclined upwards towards the guide rail, so as to give the flap an engaging trajectory towards the web of the guide rail during the descent of the flap. It is preferably located in the rear part of the flap relative to the direction of travel of the vehicle.
• this pivot axis is above the lower part of the flap which extends under the projecting flank of the guide rail.
• a low safety position which corresponds to the normal driving position where the lower parts of the flaps enclose the head of the guide rail, and a high reengagement position where the lower parts of the flaps are sufficiently spaced to allow the passage of the head of the rail.
• this inclined flap which may be single, is subjected to a downward restoring force which keeps it in a low safety position, but which allows this flap to pivot in the high position of reengagement when a reengagement effort is made. directed upwards and above the downward force is applied to the bottom of this at least one flap.
• This restoring force which forces the flap to remain in the closed position of safety, can be a simple gravity recall caused by the weight of the shutter and obtained by construction depending on the shape of the flap and the positioning of the pivot axis .
• each of the sidewall elements may also comprise at least one elastic thrust means, preferably of spring type, which exerts on the at least one inclined flap this downward restoring force.
• This restoring force is, however, less than the stress of approaching the guide rail exerted by the link connecting the guide assembly to the vehicle or the self weight of the guide head.
• the invention thus provides a means for automatically reengaging the guide assembly around the guide rail which is activated automatically as soon as the anti-extraction device passes over the rail.
• the base of the inclined flaps may be shaped evacuation nozzle of the objects present on the guide path and may interfere with the guidance of the vehicle.
• the anti-extraction safety device is easily removable or at least retractable, which allows very easy access to the parts of the guide assembly located at the rear and in particular the inclined rollers whose tread must be regularly changed.
• Figure 1 is a general perspective view of an inclined roller guide assembly equipped with an anti-extraction safety device according to the invention
• Figure 2 is a general front view of an inclined roller guide assembly equipped with an anti-extraction safety device according to the invention in the low safety position and engaged with a guide rail;
• Figure 3 is a side view of a flap and a roller both inclined, a basic variant of the anti-extraction safety device according to the invention in the low safety position, mounted on a guide assembly;
• Figure 4 is a top view of the device of Figure 3;
• Figure 5 is a sectional view of the device of Figure 3 along the V-V section plane passing through the axis of rotation of the inclined rollers;
• Figure 6 is a sectional view of the device of Figure 3 along the section plane VI-VI through the pivot axis of the inclined flaps;
• Figure 7 is a side view of an inclined flap of the device of Figure 3 shown alone;
• Figure 8 is a side view of an inclined roller with an inclined flap in the low position for maintenance
• Figures 9 and 10 are views respectively of front and side in correspondence of the device of Figure 3 in the use position, that is to say, in engagement with a guide rail;
• Figures 1 1 to 20 are pairs of views, each side and side matching, illustrating the successive steps of an automatic re-engagement sequence of the device of Figure 3;
• FIG. 21 is a side elevational view of a second variant of the anti-extraction safety device according to the invention in the safety down position, mounted on a guide assembly; .
• FIG. 22 is a view in the plane of the flap of the rear face of the two inclined flaps of one of the flank elements of the device of FIG. Figure 21, shown alone;
• Figures 23 and 24 are respectively front and side views of the device of Figure 21 in the use position, that is to say in engagement with a guide rail;
• Figures 25 to 32 are pairs of views, each side and side matching, illustrating the successive steps of an automatic re-engagement sequence of the device of Figure 21;
• Figures 33 and 34 are sectional views of the device of Figure 21, made according to the sectional plane respectively XXXIII-
• the anti-extraction safety device according to the invention can be applied for example to a guide assembly 1 as shown in FIG.
• This moving element carries the guide head 2, in the manner of a deformable parallelogram and by several pivot joints and a return by two articulated arms 8 and 9.
• the guide head 2 shown is formed of two roller bearing assemblies 10 and 11, mounted on a support 12, and each carrying an inclined roller 13 and 14, respectively, by means of a shaft 15, 16 on each of which is mounted a bearing such as 17 or 18, preferably conical.
• the rollers are preferably of the rim type 19 and lightened and tread 21 and 22 of composite material.
• This assembly constitutes the guide member along a guide rail 23, for example on the ground of the type, as represented in the figures, with a head 24 having two projecting flanks 25 and 26 each having in the upper part an inclined rolling track. 27, 28 for the rollers 13 and 14 of the guide assembly and a recess 29, 30 in the lower part in the area where each projecting flank 25, 26 joins the web 31 of the rail.
• the guide assembly 1 shown is equipped with an anti-extraction safety device 32 with automatic reengagement or controlled according to the invention.
• each side a side member 33, 34 which is mounted on the guide head 2 but which does not rotate with the inclined roller 13, 14 corresponding.
• each of these flank elements 33 or 34 comprises an inclined flap respectively 35 or 36.
• flaps 35, 36 are arranged next to the lower portion of the inclined guide roller 13, 14 corresponding. They are inclined downwardly towards each other, that is to say in the direction of the guide rail 23.
• the flaps preferably have an inclination which corresponds approximately to that of the inclined roller 13, 14 corresponding, but which can advantageously be slightly greater so as to better withstand friction when the device must counter a pulling force of the guide assembly. What is important is obviously the inclination of the axis of articulation of the flap.
• flaps 35, 36 are preferably substantially plane plates of any suitable shape and for example of generally rectangular, triangular or hexagonal general shape with truncated front corner as shown or not truncated.
• the flaps 35, 36 may comprise parts of greater thickness in the areas most heavily stressed in use.
• the inclined flaps 35, 36 preferably have an enveloping shape which covers the lower part of the guide rollers 13, 14. In addition to their anti-extraction function, they can thus protect the rollers, in particular projections and ejection of objects while driving.
• the front part of these flaps can thus for example be extended by a wraparound return 37, 38 in the manner of a fairing.
• this shape increases the return force downwards, that is to say towards the low safety position of the flaps corresponding to the closed position of the flap. device.
• the upper part of the inclined rollers 13, 14 is preferably free to allow its natural ventilation and a visual check of the wear of the treads 21, 22.
• each of these flaps 35, 36 is intended to serve as anti-extraction claw engaging under the corresponding salient flank 25 or 26 of the guide rail 23 to oppose any extraction force exerted on the guide assembly 1.
• the front end of the lower part 39, 40 of inclined flaps 35 and 36, or the front and rear ends of these lower parts 39, 40 in the case of a symmetrical variant, can advantageously be shaped into a beak. evacuation as 41.
• Each of these inclined flaps 35, 36 is articulated to pivoting by means of a pivot pin 42, 43 preferably flanged at the rear of the flap, which is pivotally engaged in the support 12 of the roller holder assemblies 10 and 1 1.
• This pivot axis 42, 43 is inclined upwards and located in the rear part of the flap relative to the direction of travel of the vehicle.
• the inclined flaps 35, 36 can thus pivot in their respective plane around this inclined pivot axis 42, 43.
• the inclined flaps 35 and 36 can thus reach two limit positions: a low safety position shown in Figures 9 and 10 and an upper position of reengagement shown in Figures 17 and 18.
• the lower parts 39 and 40 of the inclined flaps 35, 36 are close to one another. In use, they extend under the projecting flank 25, 26 corresponding to the guide rail 23 and extend up to the level of the withdrawal 29, 30 of the guide rail 23.
• the inclined flaps 35, 36 oppose the extraction of the guide assembly 1 and provide, by their combined action, anti-extraction and anti-tearing sought.
• the lower parts 39 and 40 of the inclined flaps 35, 36 are spaced from each other. In use, they are found laterally spaced from the projecting flanks 25, 26 of the guide rail 23. The passage of the head 24 of the guide rail 23 is thus possible, which allows a reengagement of the guide assembly 1 around the rail guide 23 as will be explained later.
• the pivot axis 42, 43 of the flaps is preferably located in the rear part of the inclined flaps 35 and 36 in the direction of travel of the vehicle and for example at the level of the vehicle.
• rear corner 44 of these flaps 35, 36 when they adopt a generally triangular or approximately hexagonal shape as in the embodiment shown.
• the inclined flaps 35, 36 tend to pivot downwards, which has the effect of bringing the lower parts 39 and 40 closer together with the inclined flaps 35, 36 and so on. improve the anchoring of the guide head 2 made by the anti-extraction safety device 32.
• the inclined flaps 35, 36 preferably each have a cutout, respectively 45 and 46, for example of rounded or polygonal shape, located at the shaft 15, 16 of the inclined roller 13 or 14 corresponding.
• the shafts 15, 16 of the guide rollers 13, 14 may thus advantageously pass each through one of these cutouts 45, 46 and extend beyond the inclined flap 35, 36 corresponding.
• These shafts 15 and 16 fixed in rotation serve as a stop for pivoting the inclined flaps 35, 36 and this in the two characteristic limit positions of the device. Indeed, they serve both as low stop stops in the low safety position of the inclined flaps 35, 36 by pressing the upper edge 47 of the cutouts 45, 46 against the upper part of the shafts 15, 16, and high stops. stopping in the high position of reengagement of the inclined flaps 35, 36 by pressing the lower edge 48 of the cutouts 45, 46 against the lower part of the shafts 15, 16.
• these cuts 45 and 46 must have a shape and dimensions adapted to those of the shafts 15, 16 so that the inclined flaps 35, 36 can describe the race necessary for the proper functioning of the anti-extraction safety device 32 according to the invention. Similarly there must be a slight clearance between the shoulder of the shaft 15, 16 of the roller and the inclined flap 35, 36, so as not to hinder its course.
• the invention is not limited to this type of stops.
• stop means fixed in rotation, to define the two characteristic limit positions of the device.
• the anti-extraction security device 32 is very easily removable or retractable. As can be seen in FIG. 8, it suffices to disassemble the shaft 15 and then to pivot completely downwards the inclined flap 35, which is then no longer held in abutment, to directly access the inclined guide roller 13 .
• each edge member 33 or 34 comprises not one but two inclined flaps: a front flap 49 and a rear flap 50.
• first flank element 33 of the anti-extraction safety device 32 will be described below. It is understood that the second flank element 34 is formed of similar means with identical functions.
• the flaps 49, 50 have a generally triangular overall shape and are arranged in the extension of each other in the inverted direction so as to reconstruct approximately the shape of a unit flap 35 or 36 of the basic variant.
• each of these front and rear flaps 50 serves as anti-extraction claw engaging under the corresponding projecting flank 25 or 26 of the guide rail 23 and thus opposing any extraction force of the guide head 2.
• this lower part 51, 52 corresponds more specifically to the area of the lower rear corner for the front flap 49 and the lower front corner area for the rear flap 50.
• the front end of the lower portion 51 of the front flap 49 and / or the rear end of the lower portion 52 of the rear flap 50 can also be shaped as evacuation spout 53, 54.
• Each of these front and rear flaps 50 is individually and independently pivotally articulated by means of an inclined pivot axis 55 and 56 respectively which extends at the back of this flap and is pivotally engaged in the support 12.
• the pivot axis 55 of the front flap 49 is located in the front part thereof, preferably at the front corner 57 of the front flap 49, and the pivot axis 56 of the rear flap 50 is located in the rear portion of the rear flap 50, preferably at the rear corner 58 thereof.
• the second flap namely the rear flap 50, on the contrary tends to pivot downwards, which has the effect of bringing its lower part 52 closer to that of its counterpart belonging to the second sidewall element 34 and thus to increase the pull-out retention of the device.
• the front and rear flaps 49 each have a cut-out 59, 60, for example of substantially semicircular shape, which opens for one on the rear edge 61 of the front flap 49 and for the other on the front edge 62 of the rear flap 50.
• This shaft 15 or 16 can then serve as a stop for pivoting the two inclined flaps 49 and 50 in their two limit positions as shown in Figures 33 and 34.
• this variant of the anti-extraction security device 32 is easily removable. As before, simply remove the shafts 15 and 16 to release the front flaps 49 and rear 50 of each flank member 33, 34, then to pivot downward these front flaps 49 and rear 50 to directly access the inclined rollers 13 and 14.
• the inclined flaps 35, 36, 49, 50 are subjected to a restoring force downwards which keeps them in the low safety position.
• This restoring force can be a simple gravitational reminder caused by the shutter's own weight. This is the case, for example, in the basic variant shown in FIGS. 3 to 20.
• each flank member 33, 34 may further comprise an elastic thrust means, respectively 67 and 68, which exerts on the at least one inclined flap this restoring force downwards.
• Such elastic biasing means 67, 68 appears clearly in FIGS. 21 to 34 representing the second embodiment of the invention.
• it is a thrust spring 69, 70 which is carried by a support, such as 71, mounted at the end of the shaft 15, 16 of the inclined guide roller 13, 14 corresponding.
• the thrust springs 69, 70 each support, for example by means of a piston such as 72 with preferably flat bottom support or flat triangular point, on the upper part of the front flaps 49 and rear 50 inclined of the corresponding flank element 33, 34 to constrain them downwards and thus keep them in the low safety position.
• the springs 69, 70 more specifically support both the upper rear corner area 74 of the front flap 49 and the upper front corner area 75 of the rear flap 50 of each flank member. 33, 34.
• a single spring 69 or 70 can thus be provided for each side member 33, 34, this single spring simultaneously pressing on the two flaps of this side member 33, 34.
• thrust springs 69 and 70 are preferably arranged at the same inclination as the inclined flap (s) 49, 50 corresponding so as to exert on it or they a downward thrust force whose direction corresponds to the plane general of the flap (s).
• the support 71 of the thrust spring 69, 70 is extended by a side wall such as 76 which extends on the side of the device beyond the corresponding inclined flap or slats.
• This side wall 76 advantageously serves as a preferentially flat bearing wall for the flank face of the upper part of this or these inclined flaps, more specifically for the flank face of the upper rear corner 74 of the front flap 49 and the front corner.
• This support advantageously improves the torsional resistance of the inclined flap (s) which are otherwise maintained only by their pivot axis (42, 43, 55, 56).
• the set of these inclined flaps 35, 36 or 49, 50 which are subjected to a restoring force downwards by simple gravity or by elastic thrust means 67, 68, constitutes in combination with the stress of approaching the guide rail exerted by the resiliently constrained connection 6 which connects the guide assembly 1 to the vehicle or by the self weight of the guide head, means for automatically reengaging the guide assembly 1 on and around the guide rail; 23.
• This reengaging means is automatically activated as soon as the anti-extraction device 32 comes out of its grip with the guide rail 23 and passes over it.
• the flaps and their possible elastic thrust means 67, 68 must be dimensioned so that the sum of their vertical downward resting component remains lower than the constraint towards the guide rail. exerted by the elastically constrained connection 6 which connects the guide assembly 1 to the vehicle or by the own weight of the guide head.
• the gap between the lower parts 39 and 40, or between the lower parts 51, 52 and their counterparts on the other sidewall element, is insufficient for the head 24 of the guide rail 23 to pass through.
• the guide head 2 can not therefore be disengaging from the guide rail 23 and its two inclined rollers 13 and 14 are kept in rolling contact with the inclined bearing tracks 27, 28 of the head 24 of the guide rail 23.
• the inclined flaps 35, 36 or 49, 50 are constantly maintained in the low safety position, either for the first by their own weight which drives them and tilts them down, or for the second by the elastic thrust means 67, 68 which constantly support the inclined flaps 49, 50 and push them down.
• the means for reengaging the anti-extraction safety device 32 of the invention is activated automatically or on command as shown in FIGS. basic variant and 25 to 34 for the second variant.
• the guide head 2 is found above the rail head 24 as shown in Figures 1 1, 12 and 25, 26.
• the weight of the inclined flaps 35, 36 and / or the thrust springs 69, 70 act on the inclined flaps without any opposite force opposing them. They rotate the inclined flaps down and keep them in the low safety position. In this situation, the lower portions 39, 40, 51, 52 inclined flaps are close to their counterparts but not engaged with the rail.
• the inclined flaps 35, 36, 49, 50 of the flanking elements 33, 34 being in the low safety position, the gap existing between the lower parts 39 and 40, or between the lower parts 51, 52 and their counterparts on the bottom.
• another flank member is insufficient for the head 24 of the guide rail 23 to pass between the inclined flaps during the descent of the guide head 2.
• the lower part 39, 40, 51, 52 of the inclined flaps 35, 36, 49, 50 is therefore in abutment against the rail head 24 and more precisely against the inclined bearing tracks 27, 28 of the guide rail 23, as shown in Figures 13, 14 and 27, 28.
• the head of the guide rail more precisely its inclined bearing tracks 27, 28 in the example shown, then exert on the lower part 39, 40, 51, 52 inclined flaps 35, 36, 49, 50 a reaction force opposite to the downward biasing force of the guide head 2.
• This upwardly directed reaction force constitutes a re-engagement effort directed upwards and whose intensity is equal to that of the tension force. reminder of the guide head.
• the inclined flaps 35, 36, 49, 50 and their possible elastic thrust means 67, 68 have been dimensioned so that the sum of their vertical downward component acting on the inclined flaps remains less than the downward force of the guiding head 2, this sum is also less than the reengagement force exerted in response by the rail head.
• the head 24 of the guide rail can pass between the flank members 33, 34 of the anti-extraction safety device 32 and the guide head 2 can continue. its movement downwards until the guide roller or rollers 13, 14 again find contact with their respective raceway 27, 28 on the head 24 of the guide rail 23.
• return spring flaps or each flap can be replaced by an actuator controlled opening or closing. This variant may be useful in the case where one would like to voluntarily leave the guide rail.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Platform Screen Doors And Railroad Systems (AREA)
• Body Structure For Vehicles (AREA)
• Window Of Vehicle (AREA)
• Bearings For Parts Moving Linearly (AREA)
• Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)

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• 2011
  • 2011-11-22 FR FR1160665A patent/FR2982827B1/fr not_active Expired - Fee Related
• 2012
  • 2012-11-20 WO PCT/IB2012/056560 patent/WO2013076645A1/fr active Application Filing
  • 2012-11-20 JP JP2014541808A patent/JP2015501750A/ja active Pending
  • 2012-11-20 CN CN201280056896.4A patent/CN103946098B/zh not_active Expired - Fee Related
  • 2012-11-20 CA CA2855737A patent/CA2855737A1/fr not_active Abandoned
  • 2012-11-20 US US14/359,227 patent/US20140331887A1/en not_active Abandoned
  • 2012-11-20 EP EP12813977.1A patent/EP2782807A1/de not_active Withdrawn
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