EP0438364B1 - Driving device to rotate the barrier arm of a movable barrier - Google Patents

Driving device to rotate the barrier arm of a movable barrier Download PDF

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Publication number
EP0438364B1
EP0438364B1 EP91420008A EP91420008A EP0438364B1 EP 0438364 B1 EP0438364 B1 EP 0438364B1 EP 91420008 A EP91420008 A EP 91420008A EP 91420008 A EP91420008 A EP 91420008A EP 0438364 B1 EP0438364 B1 EP 0438364B1
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EP
European Patent Office
Prior art keywords
axis
shaft
motor
driven
bar
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EP91420008A
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German (de)
French (fr)
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EP0438364A1 (en
Inventor
Jean-Marc Mignot
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    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B11/00—Means for allowing passage through fences, barriers or the like, e.g. stiles
    • E06B11/08—Turnstiles; Gates for control of entry or exit of persons, e.g. in supermarkets
    • E06B11/085—Turnstiles; Gates for control of entry or exit of persons, e.g. in supermarkets non-rotary or with a limited angle of rotation, e.g. 90°
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F13/00—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions
    • E01F13/04—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage
    • E01F13/06—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage by swinging into open position about a vertical or horizontal axis parallel to the road direction, i.e. swinging gates

Definitions

  • the invention relates to a device for driving the boom of a movable barrier in rotation around an axis perpendicular to this boom, and between two extreme positions, one of which corresponds to the closure of a passage and the other corresponds to the opening of this passage.
  • German patent DE 32 31 720 discloses a heald actuated by an electric motor, placed vertically, and therefore the drive of the shaft carrying the link drive is achieved through a pinion system.
  • an electric motor is generally used, the angular stroke of rotation of which can be less than one revolution, the output shaft of which can remain stationary while the motor is under tension without the latter being damaged, and which can operate in both directions of rotation at will.
  • a motor is known in itself and generally consists of a lockable single-phase motor with constant torque, commonly designated by the expression "torque-motor”.
  • the drive device generally comprises a driven shaft mounted on a frame so as to be able to pivot around the horizontal axis perpendicular to the heald, the heald being driven by one of its ends in rotation by this driven shaft which is itself driven in rotation by a driven rod pivoting about the same horizontal axis.
  • the output shaft of the electric motor is coupled to a connecting rod-crank system, and the crank has its free end connected to the free end of the driven connecting rod.
  • the motor drives the connecting rod of the connecting rod-crank system in rotation substantially through a half-turn between two elastic stops which limit the trajectory of this connecting rod.
  • Such devices have proved difficult to adjust from the point of view of the kinematics, and of the relative positions of the shafts, connecting rods and cranks, so that the arm is effectively driven over 90 ° between the horizontal position and the vertical position.
  • the time required for the beam to pass between its two extreme positions is generally between 1.6 and 1.8 s. Gold, this time is now considered to be too long, especially for modern motorway toll barriers which must allow tolling to be faster and faster, even without stopping vehicles.
  • these known devices include too large a number of moving parts, subject to wear, and noisy.
  • the heddle of such a movable barrier must, for safety reasons, be able to be locked in a horizontal position. It is generally necessary to prevent a user from being able to raise the boom manually. However, the mere resistance of the motor is generally insufficient in this regard. This is why, in known devices, when the heddle is in horizontal position, the connecting rod-crank system is arranged so as to be at one of its top or bottom dead centers, thus effecting mechanical locking of the heddle in horizontal position. . However, it turns out that with such devices, it is difficult in practice to obtain a blocking of the arm in the vertical position, in particular taking into account the problems of space and the other constraints imposed elsewhere. Therefore, in case of strong horizontal wind, the barrier of the barrier in the vertical position can be inadvertently brought back to its horizontal position and thus hinder the free passage of people or vehicles.
  • the elastic stops limiting the rotational stroke of the rod driven by the engine generate phenomena of vibration in the extreme positions of the heddle. These phenomena are obviously undesirable and cause in particular very rapid wear of the shaft mounting bearings and mechanical connections.
  • the invention aims to remedy simultaneously the aforementioned drawbacks of the drive devices of the prior art.
  • the object of the invention is therefore to propose a drive device which is simple to adjust, much faster, in particular allowing a passage of the beam between its two positions. extremes in less than 1 s-, incorporating a minimum number of parts, and which does not include an elastic end-of-travel stop generating untimely vibrations. More particularly, an object of the invention is to provide such a device in which the speeds and the resisting torque tend to be zero in the extreme positions, by geometric construction.
  • Another object of the invention is to provide such a drive device which can not only block the boom in an extreme position, in particular horizontal, but also block the boom in the other extreme position, in particular vertical , in a simple and economical way.
  • Another object of the invention is to provide such a drive device in which the electric motor operates with a rotation stroke of its motor shaft less than 120 °, in particular of the order of 90 °.
  • the invention provides a device for driving the boom of a movable barrier in rotation around an axis perpendicular to this boom, and between two extreme positions, in particular at least partially and at least substantially horizontal respectively vertical , comprising a driven shaft mounted on a frame so as to be able to pivot around the axis of the heald, the heald being driven by one of its ends in rotation by this driven shaft which is itself driven in rotation by a driven connecting rod pivoting about an axis parallel or coincident with the axis of the heald, and comprising an electric motor for driving the driven connecting rod, the driven shaft and the heald in rotation.
  • the motor shaft is parallel to the driven shaft, and connected to the driven connecting rod by means of a driving rod driven in rotation by the motor shaft, the two driven driving rods being associated one with the 'other by association means providing a pivot connection with an axis parallel to the motor shaft and the driven shaft, pivot connection which is capable of sliding in translation radially with respect to the driven connecting rod and the tree led.
  • the motor shaft, the driving rod, the driven rod and the driven shaft have a rotational stroke between the two extreme positions of the arm which is less than half a turn, in particular less than 120 °. In practice, the stroke of the motor shaft can be limited to 90 °.
  • the orientation of the driving rod - defined by the direction passing through the axis of rotation of this driving rod and by the axis of the pivot connection -, and the orientation of the driven rod - defined by the direction passing through the axis of rotation of this driven connecting rod and by the axis of the pivot link, are generally perpendicular to each other in at least one of the two extreme positions of the heddle. In this position where the orientations of the connecting rods are perpendicular to each other, mechanical locking is achieved, since the driven connecting rod cannot rotate the driving connecting rod.
  • the orientations of the driving and driven connecting rods are perpendicular to one another in the two extreme positions of the heddle, namely in particular in the horizontal position and in the vertical position.
  • the driven connecting rod and the arm are mounted on the driven shaft integral in rotation with this shaft
  • the driving connecting rod is mounted on the engine shaft integral in rotation with this shaft of the engine
  • the orientations of the two driving and driven connecting rods are generally at right angles to each other in each of the extreme positions of the arm, and the stroke of the motor shaft is 90 ° between these two positions. extremes.
  • the means of association of the two driving rods and driven to one another consist of a roller mounted free in rotation at the free end of the driving rod around a shaft parallel to the 'motor shaft and the driven shaft, and a radial groove of the driven rod in which the roller is engaged so as to cooperate by contact with the bearing surfaces of the groove.
  • These radial bearing surfaces of the groove allow the roller making the pivot connection to slide radially relative to the rod connected to the driven shaft.
  • the motor shaft extends under and vertically from the driven shaft, and the driving rod is in the form of a flywheel portion whose center of gravity is eccentric relative to the motor shaft and to the orientation of this driving rod, so as to form a return counterweight tending to drive this driving rod in rotation in one direction, in particular in the direction corresponding to the return or the maintenance of the arm in the vertical position - in the absence of an electric power supply to the motor.
  • a return spring drives the driven shaft to assist this motor in the rise of the arm and to return the arm to the vertical position in the event of the power supply to the motor being cut off.
  • the invention also relates to a drive device incorporating the above characteristics, in combination, and more particularly suitable for driving a heald about a horizontal axis.
  • the invention solves the problem mentioned above.
  • the driving and driven connecting rods are perpendicular to each other, that is to say when the groove is perpendicular to the orientation of the driving connecting rod, the engine-resisting torque is , due to the geometry of the mechanism, which is extremely low or even zero when the engine is started. Therefore, the engine can, at startup, have a significant acceleration, acceleration which allows it to quickly take a speed of significant value.
  • the two driving and driven connecting rods are in alignment with each other, that is to say when the resisting torque is, because of the geometry, the most important, the speed of the motor. has already acquired significant value.
  • the invention provides a device essentially incorporating only two connecting rods.
  • the invention relates to a device for driving the boom 1 in rotation of a barrier movable about a horizontal axis 2 perpendicular to this boom 1, and between two extreme positions at least partially and at least substantially horizontal respectively vertical.
  • This drive device comprises a driven shaft 3 mounted on a frame 4 so as to be able to pivot about the horizontal axis 2 of rotation of the heald 1.
  • the heald 1 is driven in rotation by the driven shaft 3 connected to the 'one 5 of the ends of the stringer 1.
  • the smooth 1 can be made of several articulated elements or not.
  • the driven shaft 3 is itself driven in rotation by a driven connecting rod 6 which pivots about a horizontal axis parallel or coincident with the horizontal axis 2 of rotation of the heddle 1.
  • An electric motor 7 rotates the driven connecting rod 6, the driven shaft 3, and the heddle 1.
  • This motor 7 is capable of being able to be stopped by force under tension without undergoing deterioration such as a burnout of its windings.
  • the electric motor 7 is chosen and controlled by an appropriate device so that it can rotate in one or the other direction of rotation depending on whether the heddle 1 must be raised from the horizontal position to the vertical position or lowered from the vertical position to the horizontal position.
  • Such a control device for such an electric motor is known in itself and therefore does not have to be described or shown.
  • the shaft 8 of the engine is arranged to extend parallel to the driven shaft 3.
  • the shaft 8 of the engine is connected to the driven connecting rod 6 by means of a driving connecting rod 9 driven in rotation by the shaft 8 of the engine, the two driving connecting rods 9 and driven 6 being associated with each other by means 10, 13 of association producing a connection of the pivot link type with axis 11 of parallel pivoting to the shaft 8 of the engine and to the driven shaft 3.
  • the pivot connection of the association means 10, 13 is moreover capable of sliding in translation radially with respect to the driven connecting rod 6 and to the driven shaft 3 , that is to say perpendicular to its axis 11.
  • the means 10, 13 of association form a connection between the two connecting rods, 6, 9 with two degrees of freedom: a rotation around the axis 11 of the pivot connection, and a translation perpendicular to this axis 11 and in the stiff direction of the driven shaft 3.
  • the pivot link slides in translation along the driven rod 6 radially while driving this driven rod 6 in rotation around the driven shaft 3.
  • the axis of rotation of the driving rod 9 is parallel or coincident with the horizontal axis of rotation 14 of the shaft 8 of the engine.
  • the direction D2 passing through the axis of rotation of this driving rod 9 and through the axis 11 of the pivot connection of the means 10, 13 of association defines the orientation overall of the driving connecting rod 9.
  • the direction D1 passing through the axis of rotation of the driven connecting rod 6 and through the axis 11 of the pivot connection of the association means 10, 13 defines the overall orientation of the driven rod 6.
  • these two orientations D1, D2 are generally perpendicular to each other in at least one of the extreme positions of the heald 1 -in particular at least in the horizontal position of the heald 1- .
  • these orientations D1, D2 of the connecting rods 6, 9 are perpendicular to each other in the two extreme positions of the heddle 1, that is to say in horizontal position and in vertical position.
  • the driven rod 6 cannot drive the driving rod 9 in untimely rotation.
  • the action of the driven rod 6 on the driving rod 9 can only be done on the pivot link by reaction of the means allowing the radial translation of this pivot link.
  • this reaction is perpendicular to the direction of translation, that is to say perpendicular to the driven connecting rod 6.
  • Reducing devices could be provided between the different elements of the connecting rod mechanism driven by each other. Thanks to such reducers, one could for example use driven rods 6 and driving 9 of different lengths and angular strokes.
  • the driven connecting rod 6 and the heddle 1 are mounted directly on the driven shaft 3 integral in rotation with the driven shaft 3 by means 15, 16 coupling.
  • the coupling 15 of the connecting rod driven on the shaft 3 can be a coupling by tightening, by geared tightening, or by crimping or the like.
  • the coupling 16 of the end 5 of the heddle 1 on the shaft 3 is located at a free end 17 of the shaft 3 opening out of the frame 4.
  • the driven shaft 3 is mounted on the frame 4 thanks to bearings or bearings 18, 19 one of which 18 supports one end 20 of the shaft 3 and the other of which 19 allows the free end 17 of the shaft 3 to exit outside the frame 4.
  • the coupling 16 of the heald 1 on the free end 17 can be made in any suitable manner, for example by means of a set of flanges 21 in the form of a band encircling the end 5 of the heald 1 and clamped to a plate 22 by means of screws or appropriate tensioners, the plate 22 being mounted integral in rotation with the driven shaft 3 and extending perpendicular to the horizontal axis 2 of rotation of this shaft 3.
  • the driving rod 9 is mounted directly on the motor output shaft 8, integral in rotation with the motor shaft 8 by means of a rigid coupling 23 which can be produced by tightening, geared tightening, crimping or the like ... If the motor 7 includes a reduction device which is incorporated therein, the driving rod 9 is then mounted directly on the output shaft of said reduction gear which is considered to be the motor output shaft 8.
  • the orientations D1, D2 of the two driving and driven connecting rods 6, 9 being generally at right angles to one another in these extreme positions of the arm 1, the stroke of the shaft 8 of the engine being 90 ° between these two extreme positions.
  • the drive device according to the invention is particularly simple, incorporates few parts, is reliable, easy to adjust, extremely fast, and optimizes the operating conditions of the electric motor 7.
  • the two connecting rods being at an angle right in each of the extreme positions, the torque resisting starting the engine is zero or almost zero.
  • blocking of the heddle 1 is carried out in the two extreme vertical and horizontal positions.
  • the means 10, 13 of association of the two connecting rods 6, 9 between them consist on the one hand of a roller 10 mounted free in rotation at the free end 24 of the driving rod 9 around a horizontal shaft 12 mounted fixed relative to the driving rod 9 parallel to the motor shaft 8 and to the driven shaft 3, and on the other hand to a radial groove 13 of the driven connecting rod 3 in which the roller 10 is engaged, the radial groove 13 forming bearing surfaces for the roller 10 which cooperates by contact with radial surfaces 25, 26 facing the groove 13.
  • the radial surfaces 25, 26 of the groove 13 are placed parallel to each other, on either side and at equal distance from the radial direction of the axis 2 of the driven shaft 3, that is to say of the orientation D1 of the driven connecting rod 6.
  • the distance between the radial bearing surfaces 25, 26 corresponds, apart from the clearance allowing the rolling of the roller 10, to the external diameter of the roller 10. From the so, for any angular position of the driving rod 9, corresponds, apart from play, one and only one angular position of the driven rod 6, that is to say of the arm 1.
  • the groove 13 is closed at each of its ends, and, according to the invention, at the free end 27 of the driven rod 6 by cylindrical portions of revolution with horizontal axis 28, 29.
  • the cylindrical portions 28, 29 connect the radial bearings 25, 26 continuously at each end of the groove 13. In each extreme position of the heddle 1, the roller 10 comes into contact with the cylindrical portion 28 located at the free end 27 of the driven connecting rod 6.
  • This portion cylindrical 28 is therefore placed at such a distance from the axis 2 of the driven shaft 3 that when the roller 10 comes into contact it is equidistant from the axis 2 of the driven shaft 3 and the axis 14 of the shaft 8 of the engine, the orientations D1 and D2 of the two connecting rods 6, 9 being perpendicular to one another ( Figures 1, 2, 4 and 5).
  • the other cylindrical end portion 29 is located on the internal side close to the driven shaft 3 at a distance sufficient to allow the passage of the two connecting rods 6, 9 in alignment with one another midway between the two extreme positions and between the shafts 3, 8, that is to say when the heald 1 is at 45 ° relative to the horizontal. It should be noted that the other variant in which the groove extends towards the free end of the connecting rod 6 from internal cylindrical portions in the extreme positions, the driving connecting rod 9 rotating under the shaft 8, would be feasible.
  • the roller 10 rolls on one of the bearing surfaces of the groove 13.
  • the roller 10 rolls on the other 26 of the radial bearing surfaces of the groove 13.
  • the bearing surfaces 25, 26 are plane, opposite and located in planes parallel to each other and to a radial plane containing the axis 2 of rotation of the driven connecting rod 6, at equal distance and on each side of this radial plane.
  • the shaft 8 of the motor extends under and vertically from the driven shaft 3.
  • This length L1, L2 is determined according to the gear ratio that we want to give to the device d 'drive, taking into account the characteristics of the motor 7 in particular.
  • the motor 7 is placed on a support 30 rigidly associated with the frame 4 by any suitable means (welding, bolt, etc.).
  • the drive device comprises means making it possible to place the heald 1 in a vertical position and to maintain it in this position in the event of the power supply to the motor being cut off.
  • safety standards require that the arm 1 automatically returns to the vertical position.
  • the drive device according to the invention comprises a return spring 31 driving the driven shaft 3 to bring the arm 1 back to the vertical position in the event of the power supply to the motor being cut off.
  • This spring 31 is for example a linear tension spring, one end of which is mounted on the support 30 of the motor 7, and the other end of which is associated with the free end 32 of a return link rod 33 mounted integral in rotation with the shaft driven 3 by a coupling 34.
  • the connecting rod 33 is angularly oriented relative to the driven shaft 3 and the driven connecting rod 6 to tension the spring 31 in the horizontal position of the arm 1 ( Figure 2) and return this arm 1 in position vertical ( Figure 1).
  • the spring 31 also has the function of compensating for the torque due to the weight of the stringer 1 on the rise by assisting the motor 7.
  • the driving rod 9 is a simple rod.
  • Figure 2 we can see ( Figure 2) that in the horizontal position of the arm 1, if the motor supply comes to be cut, the action 31 of the spring has no effect since, as explained, the driven connecting rod 6 cannot rotate the driving connecting rod 9, the groove 13 extending perpendicular to the direction D2 of the driving rod 9. It suffices for a slight movement of the roller 10 in the groove 13 towards the internal cylindrical portion 29 to exit this blocking point and allow the effective return of the arm 1 under the effect of the spring 31.
  • the driving rod 9 is provided with a counterweight which can be of low value taking into account that the displacement of the roller 10 in the groove 13 from the extreme horizontal position of the heddle 1 requires little effort, thanks to the geometry of the mechanism.
  • This counterweight can be simply achieved by an extension of the driving rod 9 opposite or generally opposite with respect to the shaft 8 of the engine, or even by another connecting rod mounted integral with this shaft 8 of the engine in a appropriate direction, extension or other connecting rod to which a mass of determined value could be suspended.
  • the torque that this counterweight must exert must simply overcome the resistive torque of the motor not supplied with current increased by the torques due to friction in the extreme horizontal position.
  • the driving rod 9 is in the form of a flywheel whose center of gravity is eccentric relative to the shaft 8 of the engine and to the 'orientation D2 of this driving rod 9, so as to form return counterweight tending to cause this driving rod 9 to rotate in one direction in the absence of electrical power to the motor.
  • the driving rod 9 consists of an angular sector of the disc extending generally on one side of the direction D2.
  • the angle formed by this sector is between 90 ° and 180 °, in particular is of the order of 120 °.
  • One of the sides of this angular sector of the flywheel portion is formed by the orientation D2 of the driving rod 9, that is to say by the direction passing through the axis 12 of the roller 10 and through the axis 14 of the motor shaft 8. This side is simply slightly extended beyond the direction D2 to allow the mounting of the driving rod 9 on the shaft 8 thanks to the coupling 23.
  • the curve of the resistive torque undergone by the shaft 8 of the engine in the case of a non-articulated boom 1, and which this engine must therefore overcome, has the general appearance represented in FIG. 6. It can be seen that this torque is zero for extreme positions, especially when the heald 1 is horizontal (angle equal to 0 °). On the ordinate, the value of this resistant torque has been plotted, and on the abscissa, the angle formed by the stringer 1 has been plotted relative to the horizontal. The curve is not necessarily symmetrical with respect to the angular mean portion. We make sure that the maximum torque is near the average position of 45 °.
  • the engine torque supplied to the driven shaft 3 is maximum in the vicinity of the aligned position of the orientations D1 and D2 of the two driven and driving connecting rods corresponding to the position of the beam at 45 °. In this position, the boom rotation speed is also at its maximum.
  • the axis 2 of rotation of the barrier is perpendicular to the heald 1.
  • the heddle 1 pivots horizontally along an axis 2 disposed vertically.
  • the means 10, 13 of association can comprise an elastic stop system.
  • the cylindrical part 28 of the groove 13 is equipped with an elastic stop 280, 281.
  • This stop is such that in the closed closed end position, the motor being supplied, the roller 10 exerts a slight force f1 of compression on the stop, to stress the crushing thereof.
  • the removal of the force f1 causes the release of the stress and the release of the stop which decompresses by causing the displacement along F2 of the roller 10.
  • This displacement has the effect of facilitating lifting of the barrier in the event of a power failure, the movement then being initiated and continued through the shape of the driving rod 9 as has already been explained previously.
  • FIG. 11 shows a variant according to which the return spring is a compression spring whereas in the previous embodiments, the device was equipped with a tension spring.
  • a rod 310 connected to the free end 32 of the connecting rod 33, comprises at its lower end a stop 311 constituted by a nut 312.
  • the compression spring 313 being on the one hand bearing against this lower stop 311 and on the other hand, bearing on an upper stop 314 constituted by the support 30 of the motor 7.

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Abstract

Driving device to rotate the barrier arm (1) of a movable barrier about an axis between two extreme positions, comprising a driven shaft (3) mounted on a frame (4) in such a way that it can pivot about the axis, the barrier arm being driven in rotation by one of its ends by this driven shaft which is itself driven in rotation by a driven crank arm (6) pivoting about an axis which is parallel to or merged with the axis of the barrier arm, and an electric motor (7) for driving in rotation the driven crank arm, the driven shaft and the barrier arm, the driven crank arm being connected to a driving crank arm (9) by coupling means (10, 13) forming a pivoting linkage with an axis (11), capable of sliding in translation radially with respect to the driven crank arm and to the driven shaft, characterised in that the shaft (8) of the motor is parallel to the driven shaft (3), the driving crank arm (9) being driven directly in rotation by the shaft (9) of the motor. <IMAGE>

Description

L'invention concerne un dispositif d'entraînement en rotation de la lisse d'une barrière mobile autour d'un axe perpendiculaire à cette lisse, et entre deux positions extrêmes dont l'un correspond à la fermeture d'un passage et l'autre correspond à l'ouverture de ce passage.The invention relates to a device for driving the boom of a movable barrier in rotation around an axis perpendicular to this boom, and between two extreme positions, one of which corresponds to the closure of a passage and the other corresponds to the opening of this passage.

On connaît déjà divers dispositifs d'entraînement permettant de placer la lisse d'une barrière mobile telle qu'une barrière de péage autoroutier ou de parking ou autre, par exemple soit dans une position au moins partiellement horizontale dans laquelle la lisse ferme un passage, soit dans une position au moins partiellement verticale dans laquelle elle libère ledit passage.Various drive devices are already known for placing the heald of a movable barrier such as a motorway or parking toll barrier or the like, for example either in an at least partially horizontal position in which the heald closes a passage, either in an at least partially vertical position in which it frees said passage.

On connaît par exemple la barrière mobile selon le brevet allemand DE 32 31 720 (voir préambule de la revendication 1) qui divulgue une lisse actionnée par un moteur électrique, placé verticalement, et de ce fait l'entraînement de l'arbre portant la biellette d'entraînement est réalisé par l'intermédiaire d'un système à pignons.We know for example the movable barrier according to German patent DE 32 31 720 (see preamble of claim 1) which discloses a heald actuated by an electric motor, placed vertically, and therefore the drive of the shaft carrying the link drive is achieved through a pinion system.

Dans les dispositifs connus, on utilise généralement un moteur électrique dont la course angulaire de rotation peut être inférieure à un tour, dont l'arbre de sortie peut rester immobile alors que le moteur est sous tension sans que celui-ci ne soit détérioré, et qui peut fonctionner dans les deux sens de rotation à volonté. Un tel moteur est connu en lui-même et est généralement constitué d'une moteur monophasé blocable à couple constant, couramment désigné par l'expression "moteur-couple". Le dispositif d'entraînement comprend généralement un arbre mené monté sur un bâti de façon à pouvoir pivoter autour de l'axe horizontal perpendiculaire à la lisse, la lisse étant entraînée par une de ses extrémités en rotation par cet arbre mené qui est lui-même entraîné en rotation par une bielle menée pivotant autour du même axe horizontal. L'arbre de sortie du moteur électrique est couplé à un système bielle-manivelle, et la manivelle a son extrémité libre reliée à l'extrémité libre de la bielle menée. Le moteur entraîne la bielle du système bielle-manivelle en rotation selon sensiblement un demi-tour entre deux butées élastiques qui limitent la trajectoire de cette bielle.In known devices, an electric motor is generally used, the angular stroke of rotation of which can be less than one revolution, the output shaft of which can remain stationary while the motor is under tension without the latter being damaged, and which can operate in both directions of rotation at will. Such a motor is known in itself and generally consists of a lockable single-phase motor with constant torque, commonly designated by the expression "torque-motor". The drive device generally comprises a driven shaft mounted on a frame so as to be able to pivot around the horizontal axis perpendicular to the heald, the heald being driven by one of its ends in rotation by this driven shaft which is itself driven in rotation by a driven rod pivoting about the same horizontal axis. The output shaft of the electric motor is coupled to a connecting rod-crank system, and the crank has its free end connected to the free end of the driven connecting rod. The motor drives the connecting rod of the connecting rod-crank system in rotation substantially through a half-turn between two elastic stops which limit the trajectory of this connecting rod.

De tels dispositifs se sont avérés délicats à régler du point de vue de la cinématique, et des positions relatives des arbres, bielles et manivelles, pour que la lisse soit effectivement entraînée sur 90° entre la position horizontale et la position verticale. De plus, avec de tels dispositifs connus, le temps nécessaire au passage de la lisse entre ses deux positions extrêmes est généralement compris entre 1,6 et 1,8 s. Or, ce temps est maintenant considéré comme trop important, notamment pour les barrières modernes de péage autoroutier qui doivent permettre un péage de plus en plus rapide, voire sans arrêt des véhicules. Egalement, ces dispositifs connus comportent un nombre trop important de pièces en mouvement, sujettes à l'usure, et bruyantes.Such devices have proved difficult to adjust from the point of view of the kinematics, and of the relative positions of the shafts, connecting rods and cranks, so that the arm is effectively driven over 90 ° between the horizontal position and the vertical position. In addition, with such known devices, the time required for the beam to pass between its two extreme positions is generally between 1.6 and 1.8 s. Gold, this time is now considered to be too long, especially for modern motorway toll barriers which must allow tolling to be faster and faster, even without stopping vehicles. Also, these known devices include too large a number of moving parts, subject to wear, and noisy.

Par ailleurs, la lisse d'une telle barrière mobile doit, pour des raisons de sécurité, pouvoir être bloquée en position horizontale. Il faut en effet généralement éviter qu'un utilisateur puisse relever manuellement la lisse. Or, la seule résistance du moteur est généralement insuffisante à cet égard. C'est pourquoi, dans les dispositifs connus, lorsque la lisse est en position horizontale, le système bielle-manivelle est disposé de façon à être à un de ses points morts haut ou bas, effectuant ainsi un blocage mécanique de la lisse en position horizontale. Mais, il s'avère qu'avec de tels dispositifs, il est difficile en pratique d'obtenir un blocage de la lisse en position verticale, notamment compte-tenu des problèmes d'encombrement et des autres contraintes imposées par ailleurs. De ce fait, en cas de fort vent horizontal, la lisse de la barrière en position verticale peut être ramenée de façon intempestive vers sa position horizontale et gêner ainsi le libre passage des gens ou des véhicules.Furthermore, the heddle of such a movable barrier must, for safety reasons, be able to be locked in a horizontal position. It is generally necessary to prevent a user from being able to raise the boom manually. However, the mere resistance of the motor is generally insufficient in this regard. This is why, in known devices, when the heddle is in horizontal position, the connecting rod-crank system is arranged so as to be at one of its top or bottom dead centers, thus effecting mechanical locking of the heddle in horizontal position. . However, it turns out that with such devices, it is difficult in practice to obtain a blocking of the arm in the vertical position, in particular taking into account the problems of space and the other constraints imposed elsewhere. Therefore, in case of strong horizontal wind, the barrier of the barrier in the vertical position can be inadvertently brought back to its horizontal position and thus hinder the free passage of people or vehicles.

Egalement, les butées élastiques limitant la course de rotation de la bielle entraînée par le moteur engendrent des phénomènes de vibrations dans les positions extrêmes de la lisse. Ces phénomènes sont bien évidemment indésirables et engendrent en particulier des usures très rapides des paliers de montage des arbres et des liaisons mécaniques.Also, the elastic stops limiting the rotational stroke of the rod driven by the engine generate phenomena of vibration in the extreme positions of the heddle. These phenomena are obviously undesirable and cause in particular very rapid wear of the shaft mounting bearings and mechanical connections.

De tels dispositifs d'entraînement connus sont actuellement installés et utilisés sur les péages autoroutiers. Des problèmes similaires se posent dans le cas de portails dont le battant pivote autour d'un axe vertical fixe sous l'action d'un moteur.Such known drive devices are currently installed and used on motorway tolls. Similar problems arise in the case of gates whose leaf pivots about a fixed vertical axis under the action of a motor.

L'invention vise à remédier simultanément aux inconvénients susmentionnés des dispositifs d'entraînement de l'art antérieur.The invention aims to remedy simultaneously the aforementioned drawbacks of the drive devices of the prior art.

L'invention a donc pour objet de proposer un dispositif d'entraînement qui soit simple à régler, beaucoup plus rapide, notamment permettant un passage de la lisse entre ses deux positions extrêmes en moins de 1 s-, incorporant un nombre minimal de pièces, et qui ne comporte pas de butée élastique de fin de course engendrant des vibrations intempestives. Plus particulièrement, un objet de l'invention est de procurer un tel dispositif dans lequel les vitesses et le couple résistant tendent à être nuls dans les positions extrêmes, par construction géométrique.The object of the invention is therefore to propose a drive device which is simple to adjust, much faster, in particular allowing a passage of the beam between its two positions. extremes in less than 1 s-, incorporating a minimum number of parts, and which does not include an elastic end-of-travel stop generating untimely vibrations. More particularly, an object of the invention is to provide such a device in which the speeds and the resisting torque tend to be zero in the extreme positions, by geometric construction.

Un autre objet de l'invention est de proposer un tel dispositif d'entraînement qui puisse réaliser non seulement un blocage de la lisse dans une position extrême, notamment horizontale, mais également un blocage de la lisse dans l'autre position extrême, notamment verticale, et ce de façon simple et économique. Un autre objet de l'invention est de proposer un tel dispositif d'entraînement dans lequel le moteur électrique fonctionne avec une course de rotation de son arbre moteur inférieure à 120°, notamment de l'ordre de 90°.Another object of the invention is to provide such a drive device which can not only block the boom in an extreme position, in particular horizontal, but also block the boom in the other extreme position, in particular vertical , in a simple and economical way. Another object of the invention is to provide such a drive device in which the electric motor operates with a rotation stroke of its motor shaft less than 120 °, in particular of the order of 90 °.

Pour ce faire, l'invention propose un dispositif d'entraînement en rotation de la lisse d'une barrière mobile autour d'un axe perpendiculaire à cette lisse, et entre deux positions extrêmes, notamment au moins partiellement et au moins sensiblement horizontale respectivement verticale, comprenant un arbre mené monté sur un bâti de façon à pouvoir pivoter autour de l'axe de la lisse, la lisse étant entraînée par une de ses extrémités en rotation par cet arbre mené qui est lui-même mené en rotation par une bielle menée pivotant autour d'un axe parallèle ou confondu à l'axe de la lisse, et comprenant un moteur électrique pour entraîner en rotation la bielle menée, l'arbre mené, et la lisse. L'arbre du moteur est parallèle à l'arbre mené, et relié à la bielle menée par l'intermédiaire d'une bielle menante entraînée en rotation par l'arbre du moteur, les deux bielles menante menée étant associées l'une à l'autre par des moyens d'association réalisant une liaison à pivot d'axe parallèle à l'arbre du moteur et à l'arbre mené, liaison à pivot qui est susceptible de coulisser en translation radialement par rapport à la bielle menée et à l'arbre mené. L'arbre du moteur, la bielle menante, la bielle menée et l'arbre mené ont une course de rotation entre les deux positions extrêmes de la lisse qui est inférieure à un demi-tour, notamment inférieure à 120°. En pratique, la course de l'arbre du moteur peut être limitée à 90°.To do this, the invention provides a device for driving the boom of a movable barrier in rotation around an axis perpendicular to this boom, and between two extreme positions, in particular at least partially and at least substantially horizontal respectively vertical , comprising a driven shaft mounted on a frame so as to be able to pivot around the axis of the heald, the heald being driven by one of its ends in rotation by this driven shaft which is itself driven in rotation by a driven connecting rod pivoting about an axis parallel or coincident with the axis of the heald, and comprising an electric motor for driving the driven connecting rod, the driven shaft and the heald in rotation. The motor shaft is parallel to the driven shaft, and connected to the driven connecting rod by means of a driving rod driven in rotation by the motor shaft, the two driven driving rods being associated one with the 'other by association means providing a pivot connection with an axis parallel to the motor shaft and the driven shaft, pivot connection which is capable of sliding in translation radially with respect to the driven connecting rod and the tree led. The motor shaft, the driving rod, the driven rod and the driven shaft have a rotational stroke between the two extreme positions of the arm which is less than half a turn, in particular less than 120 °. In practice, the stroke of the motor shaft can be limited to 90 °.

Selon l'invention, l'orientation de la bielle menante -définie par la direction passant par l'axe de rotation de cette bielle menante et par l'axe de la liaison à pivot-, et l'orientation de la bielle menée -définie par la direction passant par l'axe de rotation de cette bielle menée et par l'axe de la liaison à pivot-, sont globalement perpendiculaires l'une à l'autre dans au moins l'une des deux positions extrêmes de la lisse. Dans cette position où les orientations des bielles sont perpendiculaires l'une à l'autre, un blocage mécanique est réalisé, puisque la bielle menée ne peut pas entraîner en rotation la bielle menante. Selon l'invention, les orientations des bielles menante et menée sont perpendiculaires l'une à l'autre dans les deux positions extrêmes de la lisse, à savoir notamment dans la position horizontale et dans la position verticale.According to the invention, the orientation of the driving rod - defined by the direction passing through the axis of rotation of this driving rod and by the axis of the pivot connection -, and the orientation of the driven rod - defined by the direction passing through the axis of rotation of this driven connecting rod and by the axis of the pivot link, are generally perpendicular to each other in at least one of the two extreme positions of the heddle. In this position where the orientations of the connecting rods are perpendicular to each other, mechanical locking is achieved, since the driven connecting rod cannot rotate the driving connecting rod. According to the invention, the orientations of the driving and driven connecting rods are perpendicular to one another in the two extreme positions of the heddle, namely in particular in the horizontal position and in the vertical position.

Selon l'invention, la bielle menée et la lisse sont montées sur l'arbre mené solidaires en rotation de cet arbre, la bielle menante est montée sur l'arbre du moteur solidaire en rotation de cet arbre du moteur, et la distance L1 entre l'axe de la liaison à pivot et l'axe de l'arbre du moteur, la distance L2 entre l'axe de la liaison à pivot et l'axe de l'arbre mené dans les positions extrêmes de la lisse, et la distance d entre l'axe de l'arbre du moteur et l'axe de l'arbre mené vérifient la relation: L1 = L2 = d cos 45° = d √2 : 2 (d facteur de racine de 2 divisé par 2). De la sorte, les orientations des deux bielles menante et menée sont globalement à angle droit l'une de l'autre dans chacune des positions extrêmes de la lisse, et la course de l'arbre du moteur est de 90° entre ces deux positions extrêmes.According to the invention, the driven connecting rod and the arm are mounted on the driven shaft integral in rotation with this shaft, the driving connecting rod is mounted on the engine shaft integral in rotation with this shaft of the engine, and the distance L1 between the axis of the pivot link and the axis of the motor shaft, the distance L2 between the axis of the pivot link and the axis of the shaft driven in the extreme positions of the arm, and the distance d between the axis of the motor shaft and the axis of the driven shaft verify the relationship: L1 = L2 = d cos 45 ° = d √2: 2 (d root factor of 2 divided by 2) . In this way, the orientations of the two driving and driven connecting rods are generally at right angles to each other in each of the extreme positions of the arm, and the stroke of the motor shaft is 90 ° between these two positions. extremes.

Selon l'invention, les moyens d'association des deux bielles menante et menée l'une à l'autre sont constitués d'un galet monté libre en rotation à l'extrémité libre de la bielle menante autour d'un arbre parallèle à l'arbre du moteur et à l'arbre mené, et d'une rainure radiale de la bielle menée dans laquelle le galet est engagé de façon à coopérer par contact avec des portées de la rainure. Ces portées radiales de la rainure permettent au galet réalisant la liaison à pivot de coulisser radialement par rapport à la bielle menée à l'arbre mené. L'arbre du moteur s'étend sous et à la verticale de l'arbre mené, et la bielle menante est en forme de portion de volant dont le centre de gravité est excentré par rapport à l'arbre du moteur et à l'orientation de cette bielle menante, de façon à former contrepoids de rappel tendant à entraîner cette bielle menante en rotation dans un sens -notamment dans le sens correspondant au retour ou au maintien de la lisse en position verticale- en l'absence d'alimentation électrique du moteur. De plus, un ressort de rappel entraîne l'arbre mené pour assister ce moteur à la montée de la lisse et pour ramener la lisse en position verticale en cas de coupure de l'alimentation électrique du moteur.According to the invention, the means of association of the two driving rods and driven to one another consist of a roller mounted free in rotation at the free end of the driving rod around a shaft parallel to the 'motor shaft and the driven shaft, and a radial groove of the driven rod in which the roller is engaged so as to cooperate by contact with the bearing surfaces of the groove. These radial bearing surfaces of the groove allow the roller making the pivot connection to slide radially relative to the rod connected to the driven shaft. The motor shaft extends under and vertically from the driven shaft, and the driving rod is in the form of a flywheel portion whose center of gravity is eccentric relative to the motor shaft and to the orientation of this driving rod, so as to form a return counterweight tending to drive this driving rod in rotation in one direction, in particular in the direction corresponding to the return or the maintenance of the arm in the vertical position - in the absence of an electric power supply to the motor. In addition, a return spring drives the driven shaft to assist this motor in the rise of the arm and to return the arm to the vertical position in the event of the power supply to the motor being cut off.

L'invention concerne aussi un dispositif d'entraînement incorporant les caractéristiques ci-dessus, en combinaison, et plus particulièrement adapté à l'entraînement d'une lisse autour d'un axe horizontal.The invention also relates to a drive device incorporating the above characteristics, in combination, and more particularly suitable for driving a heald about a horizontal axis.

L'invention permet de résoudre le problème mentionné ci-dessus. En outre, on peut noter que lorsque les bielles menante et menée sont perpendiculaires l'une à l'autre, c'est-à-dire lorsque la rainure est perpendiculaire à l'orientation de la bielle menante, le couple résistant au moteur est, du fait de la géométrie du mécanisme, extrêmement faible, voire nul au démarrage du moteur. Dès lors, le moteur peut, au démarrage, avoir une accélération importante, accélération qui lui permet de prendre rapidement une vitesse de valeur importante. Ainsi, lorsque les deux bielles menante et menée se trouvent dans l'alignement l'une de l'autre, c'est-à-dire lorsque le couple résistant est, du fait de la géométrie, le plus important, la vitesse du moteur a déjà acquis une valeur importante.The invention solves the problem mentioned above. In addition, it can be noted that when the driving and driven connecting rods are perpendicular to each other, that is to say when the groove is perpendicular to the orientation of the driving connecting rod, the engine-resisting torque is , due to the geometry of the mechanism, which is extremely low or even zero when the engine is started. Therefore, the engine can, at startup, have a significant acceleration, acceleration which allows it to quickly take a speed of significant value. Thus, when the two driving and driven connecting rods are in alignment with each other, that is to say when the resisting torque is, because of the geometry, the most important, the speed of the motor. has already acquired significant value.

D'autre part, l'invention procure un dispositif n'incorporant essentiellement que deux bielles.On the other hand, the invention provides a device essentially incorporating only two connecting rods.

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description suivante de ces modes de réalisation préférentiels donnés uniquement à titre d'exemples, qui se réfère aux figures annexées dans lesquelles:

  • la figure 1 est une vue en coupe verticale transversale d'un premier mode de réalisation d'un dispositif d'entraînement selon l'invention, la lisse étant en position verticale.
  • la figure 2 est une vue en coupe verticale transversale du premier mode de réalisation d'un dispositif d'entraînement selon l'invention, la lisse étant représentée en position horizontale.
  • la figure 3 est une vue en coupe verticale longitudinale d'un second mode de réalisation d'un dispositif d'entraînement selon l'invention, la lisse étant en position intermédiaire.
  • la figure 4 est une vue en coupe verticale transversale du second mode de réalisation d'un dispositif d'entraînement selon l'invention, la lisse étant en position verticale.
  • la figure 5 est une vue en coupe verticale transversale du second mode de réalisation du dispositif normalement selon l'invention, la lisse étant en position horizontale.
  • la figure 6 est un diagramme illustrant le couple résistant sur l'arbre du moteur d'un dispositif d'entraînement selon l'invention.
  • les figures 7 et 8 représentent une variante.
  • la figure 7 est une vue en coupe latérale.
  • la figure 8 est une vue de dessus.
  • les figures 9 et 10, sont des vues partielles montrant des variantes de réalisation.
  • la figure 11 est une vue en coupe montrant une autre variante.
Other characteristics and advantages of the invention will appear on reading the following description of these preferred embodiments given solely by way of examples, which refers to the appended figures in which:
  • Figure 1 is a cross-sectional vertical view of a first embodiment of a drive device according to the invention, the beam being in the vertical position.
  • Figure 2 is a vertical cross-sectional view of the first embodiment of a drive device according to the invention, the rail being shown in a horizontal position.
  • Figure 3 is a longitudinal vertical sectional view of a second embodiment of a drive device according to the invention, the beam being in the intermediate position.
  • Figure 4 is a vertical cross-sectional view of the second embodiment of a drive device according to the invention, the heddle being in the vertical position.
  • Figure 5 is a cross-sectional vertical view of the second embodiment of the device normally according to the invention, the beam being in the horizontal position.
  • FIG. 6 is a diagram illustrating the resistive torque on the motor shaft of a drive device according to the invention.
  • Figures 7 and 8 show a variant.
  • Figure 7 is a side sectional view.
  • Figure 8 is a top view.
  • Figures 9 and 10 are partial views showing alternative embodiments.
  • Figure 11 is a sectional view showing another variant.

Les modes de réalisation décrits ci-après concernent une barrière dont la lisse 1 se débat dans un plan vertical autour d'un axe horizontal 2. Il est clair néanmoins que les mêmes caractéristiques peuvent être adaptées dans d'autres cas de figure, notamment si l'axe est horizontal, ou si la lisse est un battant de portailThe embodiments described below relate to a barrier whose beam 1 struggles in a vertical plane around a horizontal axis 2. It is nevertheless clear that the same characteristics can be adapted in other cases, in particular if the axis is horizontal, or if the heald is a gate leaf

L'invention concerne un dispositif d'entraînement en rotation de la lisse 1 d'une barrière mobile autour d'un axe horizontal 2 perpendiculaire à cette lisse 1, et entre deux positions extrêmes au moins partiellement et au moins sensiblement horizontale respectivement verticale. Ce dispositif d'entraînement comprend un arbre mené 3 monté sur un bâti 4 de façon à pouvoir pivoter autour de l'axe horizontal 2 de rotation de la lisse 1. La lisse 1 est entraînée en rotation par l'arbre mené 3 relié à l'une 5 des extrémités de la lisse 1. La lisse 1 peut être en plusieurs éléments articulés ou non. L'arbre mené 3 est lui-même entraîné en rotation par une bielle menée 6 qui pivote autour d'un axe horizontal parallèle ou confondu à l'axe horizontal 2 de rotation de la lisse 1.The invention relates to a device for driving the boom 1 in rotation of a barrier movable about a horizontal axis 2 perpendicular to this boom 1, and between two extreme positions at least partially and at least substantially horizontal respectively vertical. This drive device comprises a driven shaft 3 mounted on a frame 4 so as to be able to pivot about the horizontal axis 2 of rotation of the heald 1. The heald 1 is driven in rotation by the driven shaft 3 connected to the 'one 5 of the ends of the stringer 1. The smooth 1 can be made of several articulated elements or not. The driven shaft 3 is itself driven in rotation by a driven connecting rod 6 which pivots about a horizontal axis parallel or coincident with the horizontal axis 2 of rotation of the heddle 1.

Un moteur électrique 7 entraîne en rotation la bielle menée 6, l'arbre mené 3, et la lisse 1. Ce moteur 7 est susceptible de pouvoir être arrêté de force sous tension sans subir de détérioration telle qu'un grillage de ses bobinages. On peut utiliser par exemple un moteur électrique monophasé à condensateur à couple constant. Le moteur électrique 7 est choisi et commandé par un dispositif approprié de façon à pouvoir tourner dans l'un ou l'autre sens de rotation selon que la lisse 1 doit être levée de la position horizontale à la position verticale ou abaissée de la position verticale à la position horizontale. Un tel dispositif de commande d'un tel moteur électrique est connu en lui-même et n'a donc pas à être décrit ni représenté.An electric motor 7 rotates the driven connecting rod 6, the driven shaft 3, and the heddle 1. This motor 7 is capable of being able to be stopped by force under tension without undergoing deterioration such as a burnout of its windings. One can use for example a single-phase electric motor with constant torque capacitor. The electric motor 7 is chosen and controlled by an appropriate device so that it can rotate in one or the other direction of rotation depending on whether the heddle 1 must be raised from the horizontal position to the vertical position or lowered from the vertical position to the horizontal position. Such a control device for such an electric motor is known in itself and therefore does not have to be described or shown.

Selon l'invention, l'arbre 8 du moteur est disposé pour s'étendre parallèlement à l'arbre mené 3. L'arbre 8 du moteur est relié à la bielle menée 6 par l'intermédiaire d'une bielle menante 9 entraînée en rotation par l'arbre 8 du moteur, les deux bielles menante 9 et menée 6 étant associées l'une à l'autre par des moyens 10, 13 d'association réalisant une liaison du type liaison à pivot d'axe 11 de pivotement parallèle à l'arbre 8 du moteur et à l'arbre mené 3. La liaison à pivot des moyens 10, 13 d'association est par ailleurs susceptible de coulisser en translation radialement par rapport à la bielle menée 6 et à l'arbre mené 3, c'est-à-dire perpendiculairement à son axe 11. De la sorte, les moyens 10, 13 d'association forment une liaison entre les deux bielles, 6, 9 à deux degrés de liberté: une rotation autour de l'axe 11 de la liaison à pivot, et une translation perpendiculairement à cet axe 11 et dans la direction raidale de l'arbre mené 3. Ainsi, lorsque la bielle menante 9 est entraînée en rotation par l'arbre 8 du moteur, la liaison à pivot coulisse en translation le long de la bielle menée 6 radialement tout en entraînant cette bielle menée 6 en rotation autour de l'arbre mené 3.According to the invention, the shaft 8 of the engine is arranged to extend parallel to the driven shaft 3. The shaft 8 of the engine is connected to the driven connecting rod 6 by means of a driving connecting rod 9 driven in rotation by the shaft 8 of the engine, the two driving connecting rods 9 and driven 6 being associated with each other by means 10, 13 of association producing a connection of the pivot link type with axis 11 of parallel pivoting to the shaft 8 of the engine and to the driven shaft 3. The pivot connection of the association means 10, 13 is moreover capable of sliding in translation radially with respect to the driven connecting rod 6 and to the driven shaft 3 , that is to say perpendicular to its axis 11. In this way, the means 10, 13 of association form a connection between the two connecting rods, 6, 9 with two degrees of freedom: a rotation around the axis 11 of the pivot connection, and a translation perpendicular to this axis 11 and in the stiff direction of the driven shaft 3. Thus when the driving rod 9 is rotated by the shaft 8 of the motor, the pivot link slides in translation along the driven rod 6 radially while driving this driven rod 6 in rotation around the driven shaft 3.

L'axe de rotation de la bielle menante 9 est parallèle ou confondu avec l'axe de rotation horizontal 14 de l'arbre 8 du moteur. La direction D2 passant par l'axe de rotation de cette bielle menante 9 et par l'axe 11 de la liaison à pivot des moyens 10, 13 d'association définit l'orientation globale de la bielle menante 9. De même, la direction D1 passant par l'axe de rotation de la bielle menée 6 et par l'axe 11 de la liaison à pivot des moyens 10, 13 d'association définit l'orientation globale de la bielle menée 6. Selon l'invention, ces deux orientations D1, D2 sont globalement perpendiculaires l'une à l'autre dans au moins une des positions extrêmes de la lisse 1 -notamment au moins dans la position horizontale de la lisse 1-. Selon l'invention, ces orientations D1, D2 des bielles 6, 9 sont perpendiculaires l'une à l'autre dans les deux positions extrêmes de la lisse 1, c'est-à-dire en position horizontale et en position verticale. Lorsque ces orientations D1, D2 sont perpendiculaires l'une à l'autre, la bielle menée 6 ne peut pas entraîner la bielle menante 9 en rotation de façon intempestive. En effet, l'action de la bielle menée 6 sur la bielle menante 9 ne peut se faire que sur la liaison à pivot par réaction du moyen permettant la translation radiale de cette liaison à pivot. Or cette réaction est perpendiculaire à la direction de translation, c'est-à-dire perpendiculaire à la bielle menée 6. Dès lors, si la bielle menante 9 est elle-même perpendiculaire à la bielle menée 6, la réaction de la bielle menée 6 sur la bielle menante 9 passe par l'axe de rotation de cette bielle menante 9, et reste donc sans effet. On obtient ainsi un blocage automatique du mécanisme formé par les deux bielles 6, 9, c'est-à-dire que la bielle menée 6 ne peut pas entraîner la bielle menante 9, seule la bielle menante 9 ayant la possibilité d'entraîner la bielle menée 6 à partir de cette position.The axis of rotation of the driving rod 9 is parallel or coincident with the horizontal axis of rotation 14 of the shaft 8 of the engine. The direction D2 passing through the axis of rotation of this driving rod 9 and through the axis 11 of the pivot connection of the means 10, 13 of association defines the orientation overall of the driving connecting rod 9. Similarly, the direction D1 passing through the axis of rotation of the driven connecting rod 6 and through the axis 11 of the pivot connection of the association means 10, 13 defines the overall orientation of the driven rod 6. According to the invention, these two orientations D1, D2 are generally perpendicular to each other in at least one of the extreme positions of the heald 1 -in particular at least in the horizontal position of the heald 1- . According to the invention, these orientations D1, D2 of the connecting rods 6, 9 are perpendicular to each other in the two extreme positions of the heddle 1, that is to say in horizontal position and in vertical position. When these orientations D1, D2 are perpendicular to each other, the driven rod 6 cannot drive the driving rod 9 in untimely rotation. Indeed, the action of the driven rod 6 on the driving rod 9 can only be done on the pivot link by reaction of the means allowing the radial translation of this pivot link. However, this reaction is perpendicular to the direction of translation, that is to say perpendicular to the driven connecting rod 6. Consequently, if the driving connecting rod 9 is itself perpendicular to the driven connecting rod 6, the reaction of the driven connecting rod 6 on the driving rod 9 passes through the axis of rotation of this driving rod 9, and therefore remains without effect. There is thus obtained an automatic blocking of the mechanism formed by the two connecting rods 6, 9, that is to say that the driven connecting rod 6 cannot drive the driving connecting rod 9, only the driving connecting rod 9 having the possibility of driving the rod 6 driven from this position.

Des dispositifs réducteurs pourraient être prévus entre les différents éléments du mécanisme à bielles entraînés les uns par les autres. Grâce à de tels réducteurs, on pourrait par exemple utiliser des bielles menée 6 et menante 9 de longueurs et de courses angulaires différentes. Néanmoins, sur les modes de réalisation représentés sur les figures, et selon l'invention, la bielle menée 6 et la lisse 1 sont montées directement sur l'arbre mené 3 solidaires en rotation de l'arbre mené 3 grâce à des moyens 15, 16 d'accouplement. L'accouplement 15 de la bielle menée sur l'arbre 3 peut être un accouplement par serrage, par serrage engrené, ou par sertissage ou autre. L'accouplement 16 de l'extrémité 5 de la lisse 1 sur l'arbre 3 est situé à une extrémité libre 17 de l'arbre 3 débouchant en dehors du bâti 4. L'arbre mené 3 est monté sur le bâti 4 grâce à des paliers ou roulements 18, 19 dont l'un 18 supporte une extrémité 20 de l'arbre 3 et dont l'autre 19 permet la sortie de l'extrémité libre 17 de l'arbre 3 en dehors du bâti 4. L'accouplement 16 de la lisse 1 sur l'extrémité libre 17 peut être réalisé de toute manière appropriée, par exemple grâce à un jeu de brides 21 en forme de bande encerclant l'extrémité 5 de la lisse 1 et serré sur une plaque 22 grâce à des vis ou des tendeurs appropriés, la plaque 22 étant montée solidaire en rotation de l'arbre mené 3 et s'étendant perpendiculairement à l'axe 2 horizontal de rotation de cet arbre 3. Selon l'invention, la bielle menante 9 est montée directement sur l'arbre 8 de sortie du moteur, solidaire en rotation de l'arbre 8 du moteur grâce à un accouplement 23 rigide qui peut être réalisé par serrage, serrage engrené, sertissage ou autre... Si le moteur 7 inclut un dispositif réducteur qui lui est incorporé, la bielle menante 9 est alors montée directement sur l'arbre de sortie dudit réducteur qui est considéré comme l'arbre 8 de sortie du moteur. Selon l'invention, la distance L1 entre l'axe 11 de la liaison à pivot des moyens 10, 13 d'association des bielles entre elles et l'axe 14 de l'arbre 8 du moteur, la distance L2 entre l'axe 11 de la liaison à pivot des moyens 10, 13 d'association des bielles entre elles et l'axe 2 de l'arbre mené 3 dans les positions extrêmes verticale et horizontale de la lisse 1, et la distance d entre l'axe 14 de l'arbre 8 du moteur et l'axe 2 de l'arbre mené 3 vérifient la relation: L1 = L2 = d √2: 2 (d facteur de racine de 2 divisé par 2). Les orientations D1, D2 des deux bielles 6, 9 menante et menée étant globalement à angle droit l'une par rapport à l'autre dans ces positions extrêmes de la lisse 1, la course de l'arbre 8 du moteur étant de 90° entre ces deux positions extrêmes. Ainsi, le dispositif d'entraînement selon l'invention est particulièrement simple, incorpore peu de pièces, est fiable, facile à régler, extrêmement rapide, et optimise les conditions de fonctionnement du moteur électrique 7. En effet, les deux bielles étant à angle droit dans chacune des positions extrêmes, le couple résistant au démarrage du moteur est nul ou quasi nul. De plus, on réalise un blocage de la lisse 1 dans les deux positions extrêmes verticale et horizontale.Reducing devices could be provided between the different elements of the connecting rod mechanism driven by each other. Thanks to such reducers, one could for example use driven rods 6 and driving 9 of different lengths and angular strokes. Nevertheless, in the embodiments shown in the figures, and according to the invention, the driven connecting rod 6 and the heddle 1 are mounted directly on the driven shaft 3 integral in rotation with the driven shaft 3 by means 15, 16 coupling. The coupling 15 of the connecting rod driven on the shaft 3 can be a coupling by tightening, by geared tightening, or by crimping or the like. The coupling 16 of the end 5 of the heddle 1 on the shaft 3 is located at a free end 17 of the shaft 3 opening out of the frame 4. The driven shaft 3 is mounted on the frame 4 thanks to bearings or bearings 18, 19 one of which 18 supports one end 20 of the shaft 3 and the other of which 19 allows the free end 17 of the shaft 3 to exit outside the frame 4. The coupling 16 of the heald 1 on the free end 17 can be made in any suitable manner, for example by means of a set of flanges 21 in the form of a band encircling the end 5 of the heald 1 and clamped to a plate 22 by means of screws or appropriate tensioners, the plate 22 being mounted integral in rotation with the driven shaft 3 and extending perpendicular to the horizontal axis 2 of rotation of this shaft 3. According to the invention, the driving rod 9 is mounted directly on the motor output shaft 8, integral in rotation with the motor shaft 8 by means of a rigid coupling 23 which can be produced by tightening, geared tightening, crimping or the like ... If the motor 7 includes a reduction device which is incorporated therein, the driving rod 9 is then mounted directly on the output shaft of said reduction gear which is considered to be the motor output shaft 8. According to the invention, the distance L1 between the axis 11 of the pivot connection of the means 10, 13 for association of the connecting rods with each other and the axis 14 of the shaft 8 of the engine, the distance L2 between the axis 11 of the pivot connection of the means 10, 13 for association of the connecting rods with one another and the axis 2 of the driven shaft 3 in the extreme vertical and horizontal positions of the heddle 1, and the distance d between the axis 14 of the motor shaft 8 and the axis 2 of the driven shaft 3 verify the relationship: L1 = L2 = d √2: 2 (d root factor of 2 divided by 2). The orientations D1, D2 of the two driving and driven connecting rods 6, 9 being generally at right angles to one another in these extreme positions of the arm 1, the stroke of the shaft 8 of the engine being 90 ° between these two extreme positions. Thus, the drive device according to the invention is particularly simple, incorporates few parts, is reliable, easy to adjust, extremely fast, and optimizes the operating conditions of the electric motor 7. In fact, the two connecting rods being at an angle right in each of the extreme positions, the torque resisting starting the engine is zero or almost zero. In addition, blocking of the heddle 1 is carried out in the two extreme vertical and horizontal positions.

Selon l'invention, les moyens 10, 13 d'association des deux bielles 6, 9 entre elles sont constitués d'une part d'un galet 10 monté libre en rotation à l'extrémité libre 24 de la bielle menante 9 autour d'un arbre horizontal 12 monté fixe par rapport à la bielle menante 9 parallèle à l'arbre 8 du moteur et à l'arbre mené 3, et d'autre part d'une rainure radiale 13 de la bielle menée 3 dans laquelle le galet 10 est engagé, la rainure radiale 13 formant portées de roulement pour le galet 10 qui coopère par contact avec des portées radiales 25, 26 en regard de la rainure 13. Les portées radiales 25, 26 de la rainure 13 sont placées parallèlement l'une à l'autre, de part et d'autre et à égale distance de la direction radiale de l'axe 2 de l'arbre mené 3, c'est-à-dire de l'orientation D1 de la bielle menée 6. La distance d'écartement des portées radiales 25, 26 correspond, au jeu près permettant le roulement du galet 10, au diamètre externe du galet 10. De la sorte, pour toute position angulaire de la bielle menante 9, correspond, au jeu près, une et une seule position angulaire de la bielle menée 6, c'est-à-dire de la lisse 1.According to the invention, the means 10, 13 of association of the two connecting rods 6, 9 between them consist on the one hand of a roller 10 mounted free in rotation at the free end 24 of the driving rod 9 around a horizontal shaft 12 mounted fixed relative to the driving rod 9 parallel to the motor shaft 8 and to the driven shaft 3, and on the other hand to a radial groove 13 of the driven connecting rod 3 in which the roller 10 is engaged, the radial groove 13 forming bearing surfaces for the roller 10 which cooperates by contact with radial surfaces 25, 26 facing the groove 13. The radial surfaces 25, 26 of the groove 13 are placed parallel to each other, on either side and at equal distance from the radial direction of the axis 2 of the driven shaft 3, that is to say of the orientation D1 of the driven connecting rod 6. The distance between the radial bearing surfaces 25, 26 corresponds, apart from the clearance allowing the rolling of the roller 10, to the external diameter of the roller 10. From the so, for any angular position of the driving rod 9, corresponds, apart from play, one and only one angular position of the driven rod 6, that is to say of the arm 1.

La rainure 13 est fermée à chacune de ses extrémités, et, selon l'invention, à l'extrémité libre 27 de la bielle menée 6 par des portions cylindriques de révolution d'axe horizontal 28, 29. Les portions cylindriques 28, 29 relient continûment les portées radiales 25, 26 à chaque extrémité de la rainure 13. Dans chaque position extrême de la lisse 1, le galet 10 vient au contact de la portion cylindrique 28 située à l'extrémité libre 27 de la bielle menée 6. Cette portion cylindrique 28 est donc disposée à une distance telle de l'axe 2 de l'arbre mené 3 que lorsque le galet 10 vient à son contact il est à égale distance de l'axe 2 de l'arbre mené 3 et de l'axe 14 de l'arbre 8 du moteur, les orientations D1 et D2 des deux bielles 6, 9 étant perpendiculaires l'une à l'autre (figures 1, 2, 4 et 5). L'autre portion cylindrique 29 d'extrémité est située du côté interne proche de l'arbre mené 3 à une distance suffisante pour permettre le passage des deux bielles 6, 9 en alignement l'une avec l'autre à mi-distance entre les deux positions extrêmes et entre les arbres 3, 8, c'est-à-dire lorsque la lisse 1 est à 45° par rapport à l'horizontale. Il doit être noté que l'autre variante dans laquelle la rainure s'étendrait vers l'extrémité libre de la bielle 6 à partir de portions cylindriques internes dans les positions extrêmes, la bielle menante 9 tournant sous l'arbre 8, serait réalisable.The groove 13 is closed at each of its ends, and, according to the invention, at the free end 27 of the driven rod 6 by cylindrical portions of revolution with horizontal axis 28, 29. The cylindrical portions 28, 29 connect the radial bearings 25, 26 continuously at each end of the groove 13. In each extreme position of the heddle 1, the roller 10 comes into contact with the cylindrical portion 28 located at the free end 27 of the driven connecting rod 6. This portion cylindrical 28 is therefore placed at such a distance from the axis 2 of the driven shaft 3 that when the roller 10 comes into contact it is equidistant from the axis 2 of the driven shaft 3 and the axis 14 of the shaft 8 of the engine, the orientations D1 and D2 of the two connecting rods 6, 9 being perpendicular to one another (Figures 1, 2, 4 and 5). The other cylindrical end portion 29 is located on the internal side close to the driven shaft 3 at a distance sufficient to allow the passage of the two connecting rods 6, 9 in alignment with one another midway between the two extreme positions and between the shafts 3, 8, that is to say when the heald 1 is at 45 ° relative to the horizontal. It should be noted that the other variant in which the groove extends towards the free end of the connecting rod 6 from internal cylindrical portions in the extreme positions, the driving connecting rod 9 rotating under the shaft 8, would be feasible.

Lorsque le moteur 7 tourne dans le sens correspondant au passage de la lisse 1 de la position verticale (représentée aux figures 1 ou 4) à la position horizontale (représentée aux figures 2 ou 5), le galet 10 roule sur l'une 25 des portées de la rainure 13. Au contraire, lors du passage de la lisse 1 de la position horizontale à la position verticale, le galet 10 roule sur l'autre 26 des portées radiales de la rainure 13. Les portées 25, 26 sont planes, en regard et situées selon des plans parallèles l'un à l'autre et à un plan radial contenant l'axe 2 de rotation de la bielle menée 6, à égale distance et de chaque côté de ce plan radial.When the motor 7 rotates in the direction corresponding to the passage of the arm 1 from the vertical position (shown in Figures 1 or 4) to the horizontal position (shown in Figures 2 or 5), the roller 10 rolls on one of the bearing surfaces of the groove 13. On the contrary, during the passage of the arm 1 from the horizontal position to the vertical position, the roller 10 rolls on the other 26 of the radial bearing surfaces of the groove 13. The bearing surfaces 25, 26 are plane, opposite and located in planes parallel to each other and to a radial plane containing the axis 2 of rotation of the driven connecting rod 6, at equal distance and on each side of this radial plane.

Dans les deux modes de réalisation représentés, et selon l'invention, l'arbre 8 du moteur s'étend sous et à la verticale de l'arbre mené 3. Comme on l'a vu, la distance d à laquelle on place le moteur 7 sous l'arbre mené 3 est liée à la longueur que l'on veut donner L1, L2 aux bielles 6, 9. Cette longueur L1, L2 est déterminée en fonction du rapport de démultiplication que l'on veut donner au dispositif d'entraînement, compte-tenu des caractéristiques du moteur 7 notamment. Le moteur 7 est placé sur un support 30 associé rigidement au bâti 4 par tout moyen approprié (soudure, boulon...).In the two embodiments shown, and according to the invention, the shaft 8 of the motor extends under and vertically from the driven shaft 3. As we have seen, the distance d at which the motor 7 under the driven shaft 3 is linked to the length that we want to give L1, L2 to the connecting rods 6, 9. This length L1, L2 is determined according to the gear ratio that we want to give to the device d 'drive, taking into account the characteristics of the motor 7 in particular. The motor 7 is placed on a support 30 rigidly associated with the frame 4 by any suitable means (welding, bolt, etc.).

Le dispositif d'entraînement selon l'invention comporte des moyens permettant de placer la lisse 1 en position verticale et de la maintenir dans cette position en cas de coupure de l'alimentation électrique du moteur. En effet, si le moteur 7 n'est plus alimenté en électricité, les normes de sécurité imposent que la lisse 1 revienne automatiquement en position verticale. De plus, il est souhaitable que la lisse 1 reste dans cette position verticale. Pour ce faire, on peut prévoir un ressort de rappel agissant directement sur la bielle menante 9 ou sur l'arbre 8 du moteur. Néanmoins, un tel ressort serait délicat à monter, à régler et à entretenir. C'est pourquoi, le dispositif d'entraînement selon l'invention comporte un ressort de rappel 31 entraînant l'arbre mené 3 pour ramener la lisse 1 en position verticale en cas de coupure de l'alimentation électrique du moteur 7. Ce ressort 31 est par exemple un ressort linéaire de traction dont une extrémité est montée sur le support 30 du moteur 7, et dont l'autre extrémité est associée à l'extrémité libre 32 d'une bielle 33 de rappel montée solidaire en rotation à l'arbre mené 3 par un accouplement 34. La bielle 33 est orientée angulairement par rapport à l'arbre mené 3 et à la bielle menée 6 pour tendre le ressort 31 en position horizontale de la lisse 1 (figure 2) et rappeler cette lisse 1 en position verticale (figure 1). Le ressort 31 a aussi pour fonction de compenser le couple dû au poids de la lisse 1 à la montée en assistant le moteur 7.The drive device according to the invention comprises means making it possible to place the heald 1 in a vertical position and to maintain it in this position in the event of the power supply to the motor being cut off. In fact, if the motor 7 is no longer supplied with electricity, safety standards require that the arm 1 automatically returns to the vertical position. In addition, it is desirable that the heddle 1 remains in this vertical position. To do this, one can provide a return spring acting directly on the driving rod 9 or on the shaft 8 of the engine. However, such a spring would be difficult to assemble, adjust and maintain. This is why, the drive device according to the invention comprises a return spring 31 driving the driven shaft 3 to bring the arm 1 back to the vertical position in the event of the power supply to the motor being cut off. This spring 31 is for example a linear tension spring, one end of which is mounted on the support 30 of the motor 7, and the other end of which is associated with the free end 32 of a return link rod 33 mounted integral in rotation with the shaft driven 3 by a coupling 34. The connecting rod 33 is angularly oriented relative to the driven shaft 3 and the driven connecting rod 6 to tension the spring 31 in the horizontal position of the arm 1 (Figure 2) and return this arm 1 in position vertical (Figure 1). The spring 31 also has the function of compensating for the torque due to the weight of the stringer 1 on the rise by assisting the motor 7.

Dans le mode de réalisation représenté sur les figures 1 et 2, la bielle menante 9 est une bielle simple. Dans ce cas, on peut voir (figure 2) qu'en position horizontale de la lisse 1, si l'alimentation du moteur vient à être coupée, l'action 31 du ressort n'a aucun effet puisque, comme on l'a expliqué, la bielle menée 6 ne peut pas entraîner en rotation la bielle menante 9, la rainure 13 s'étendant perpendiculairement à la direction D2 de la bielle menante 9. Il suffit d'un léger déplacement du galet 10 dans la rainure 13 vers la portion cylindrique interne 29 pour sortir de ce point de blocage et permettre la remontée effective de la lisse 1 sous l'effet du ressort 31. Pour ce faire, la bielle menante 9 est munie d'un contrepoids qui peut être de faible valeur compte-tenu du fait que le déplacement du galet 10 dans la rainure 13 à partir de la position extrême horizontale de la lisse 1 ne demande que peu d'effort, grâce à la géométrie du mécanisme. Ce contrepoids peut être simplement réalisé par une extension de la bielle menante 9 à l'opposé ou globalement à l'opposé par rapport à l'arbre 8 du moteur, voire même par une autre bielle montée solidaire de cet arbre 8 du moteur dans une direction appropriée, extension ou autre bielle à laquelle on pourrait suspendre une masse de valeur déterminée. Le couple que ce contrepoids doit exercer doit simplement vaincre le couple résistant du moteur non alimenté en courant augmenté des couples dûs aux frottements dans la position extrême horizontale.In the embodiment shown in Figures 1 and 2, the driving rod 9 is a simple rod. In this case, we can see (Figure 2) that in the horizontal position of the arm 1, if the motor supply comes to be cut, the action 31 of the spring has no effect since, as explained, the driven connecting rod 6 cannot rotate the driving connecting rod 9, the groove 13 extending perpendicular to the direction D2 of the driving rod 9. It suffices for a slight movement of the roller 10 in the groove 13 towards the internal cylindrical portion 29 to exit this blocking point and allow the effective return of the arm 1 under the effect of the spring 31. To do this, the driving rod 9 is provided with a counterweight which can be of low value taking into account that the displacement of the roller 10 in the groove 13 from the extreme horizontal position of the heddle 1 requires little effort, thanks to the geometry of the mechanism. This counterweight can be simply achieved by an extension of the driving rod 9 opposite or generally opposite with respect to the shaft 8 of the engine, or even by another connecting rod mounted integral with this shaft 8 of the engine in a appropriate direction, extension or other connecting rod to which a mass of determined value could be suspended. The torque that this counterweight must exert must simply overcome the resistive torque of the motor not supplied with current increased by the torques due to friction in the extreme horizontal position.

Mais, selon l'invention, et conformément au second mode de réalisation représenté sur les figures 3 à 5, la bielle menante 9 est en forme de volant dont le centre de gravité est excentré par rapport à l'arbre 8 du moteur et à l'orientation D2 de cette bielle menante 9, de façon à former contrepoids de rappel tendant à entraîner cette bielle menante 9 en rotation dans un sens en l'absence d'alimentation électrique du moteur. Le contrepoids formé par la bielle menante 9 en forme de portion de volant et dont le centre de gravité n'est pas à la verticale de l'arbre 8 du moteur, de sorte que ce volant exerce un couple de rappel sur cette bielle 9 dans le sens correspondant au retour ou au maintien de la lisse 1 en position verticale. La bielle menante 9 est constituée d'un secteur angulaire de disque s'étendant globalement d'un côté de la direction D2. L'angle formé par ce secteur est compris entre 90° et 180°, notamment est de l'ordre de 120°. L'un des côtés de ce secteur angulaire de portion de volant est formé par l'orientation D2 de la bielle menante 9, c'est-à-dire par la direction passant par l'axe 12 du galet 10 et par l'axe 14 de l'arbre 8 du moteur. Ce côté est simplement légèrement prolongé au-delà de la direction D2 pour permettre le montage de la bielle menante 9 sur l'arbre 8 grâce à l'accouplement 23.However, according to the invention, and in accordance with the second embodiment shown in FIGS. 3 to 5, the driving rod 9 is in the form of a flywheel whose center of gravity is eccentric relative to the shaft 8 of the engine and to the 'orientation D2 of this driving rod 9, so as to form return counterweight tending to cause this driving rod 9 to rotate in one direction in the absence of electrical power to the motor. The counterweight formed by the driving rod 9 in the form of a flywheel portion and whose center of gravity is not vertical to the shaft 8 of the engine, so that this flywheel exerts a restoring torque on this rod 9 in the direction corresponding to the return or the maintenance of the arm 1 in the vertical position. The driving rod 9 consists of an angular sector of the disc extending generally on one side of the direction D2. The angle formed by this sector is between 90 ° and 180 °, in particular is of the order of 120 °. One of the sides of this angular sector of the flywheel portion is formed by the orientation D2 of the driving rod 9, that is to say by the direction passing through the axis 12 of the roller 10 and through the axis 14 of the motor shaft 8. This side is simply slightly extended beyond the direction D2 to allow the mounting of the driving rod 9 on the shaft 8 thanks to the coupling 23.

Ainsi, on peut voir sur la figure 5 que le couple exercé par le secteur angulaire du volant formant la bielle menante 9 tend à faire pivoter cette bielle menante 9 autour de l'axe 14 dans le sens du déplacement du galet 10 dans la rainure 13. En pratique, ce couple suffit à provoquer un léger déplacement du galet 10 dans la rainure pour passer le point de blocage et permettre ensuite au ressort 31 de ramener la lisse 1 à la verticale jusqu'à la position représentée sur la figure 4. Egalement, dans la position représentée sur la figure 4, le volant exerce encore un couple de rappel qui tend à maintenir le galet 10 au contact de la portée cylindrique 28 d'extrémité, c'est-à-dire dans la position de blocage de la lisse 1 à la verticale.Thus, it can be seen in FIG. 5 that the torque exerted by the angular sector of the steering wheel forming the driving rod 9 tends to make this driving rod 9 pivot around the axis 14 in the direction of movement of the roller 10 in the groove 13 In practice, this torque is sufficient to cause a slight displacement of the roller 10 in the groove to pass the blocking point and then allow the spring 31 to bring the beam 1 vertically to the position shown in Figure 4. Also , in the position shown in FIG. 4, the flywheel still exerts a restoring torque which tends to keep the roller 10 in contact with the cylindrical bearing surface 28 of the end, that is to say in the blocking position of the smooth 1 vertically.

Bien évidemment, dès que le moteur électrique est alimenté en courant, il agit lui-même sur la bielle menante 9 pour l'entraîner en rotation, notamment à l'encontre des couples de rappel exercés par le volant de la bielle menante 9 et le ressort 31 à la descente. Lorsque la lisse 1 est dans les positions représentées aux figures 4 et 5, le moteur étant alimenté en courant, celui-ci exerce un couple suffisant pour maintenir le galet 10 au contact de la portion cylindrique 28 d'extrémité, en position de blocage de la lisse 1.Obviously, as soon as the electric motor is supplied with current, it acts itself on the driving rod 9 to drive it in rotation, in particular against the return torques exerted by the steering wheel of the driving rod 9 and the spring 31 on descent. When the heald 1 is in the positions represented in FIGS. 4 and 5, the motor being supplied with current, this exerts a sufficient torque to keep the roller 10 in contact with the cylindrical end portion 28, in the blocking position of the stringer 1.

La courbe du couple résistant subi par l'arbre 8 du moteur dans le cas d'une lisse 1 non articulée, et que ce moteur doit donc vaincre, a l'allure générale représentée à la figure 6. On voit que ce couple est nul pour les positions extrêmes, notamment lorsque la lisse 1 est horizontale (angle égal à 0°). En ordonnées on a porté la valeur de ce couple résistant, et en abscisses, on a porté l'angle formé par la lisse 1 par rapport à l'horizontale. La courbe n'est pas nécessairement symétrique par rapport à la portion moyenne angulaire. On fait en sorte que le couple maximum soit au voisinage de la position moyenne de 45°.The curve of the resistive torque undergone by the shaft 8 of the engine in the case of a non-articulated boom 1, and which this engine must therefore overcome, has the general appearance represented in FIG. 6. It can be seen that this torque is zero for extreme positions, especially when the heald 1 is horizontal (angle equal to 0 °). On the ordinate, the value of this resistant torque has been plotted, and on the abscissa, the angle formed by the stringer 1 has been plotted relative to the horizontal. The curve is not necessarily symmetrical with respect to the angular mean portion. We make sure that the maximum torque is near the average position of 45 °.

Le couple moteur fourni à l'arbre mené 3 est maximum au voisinage de la position alignée des orientations D1 et D2 des deux bielles menée et menante correspondant à la position de la lisse à 45°. Dans cette position, la vitesse de rotation de la lisse est aussi à son maximum.The engine torque supplied to the driven shaft 3 is maximum in the vicinity of the aligned position of the orientations D1 and D2 of the two driven and driving connecting rods corresponding to the position of the beam at 45 °. In this position, the boom rotation speed is also at its maximum.

Selon les modes de réalisation représentés par les figures 1 à 5, l'axe 2 de rotation de la barrière est perpendiculaire à la lisse 1. Mais on ne sortirait pas du cadre de l'invention s'il en était autrement, comme par exemple comme cela est représenté à la figure 7. Selon cette variante, la lisse 1 pivote horizontalement selon un axe 2 disposé verticalement.According to the embodiments represented by FIGS. 1 to 5, the axis 2 of rotation of the barrier is perpendicular to the heald 1. However, one does not would not depart from the scope of the invention if it were otherwise, as for example as shown in FIG. 7. According to this variant, the heddle 1 pivots horizontally along an axis 2 disposed vertically.

Selon une disposition avantageuse, les moyens 10, 13 d'association peuvent comprendrent un système de butée élastique. A cet effet (figures 9 et 10), la partie cylindrique 28 de la rainure 13 est équipée d'une butée élastique 280, 281. Cette butée est telle que dans la position extrème barrière fermée, le moteur étant alimenté, le galet 10 exerce un léger effort f1 de compression sur la butée, pour solliciter à l'écrasement celle-ci. En cas de panne de courant, la suppression de l'effort f1 provoque la libération de la de la contrainte et la libération de la butée qui se decomprime en provoquant le déplacement selon F2 du galet 10. Ce déplacement a pour effet de faciliter la levée de la barrière en cas de panne de courant, le mouvement étant alors amorcé et poursuivit gràce à la forme de la bielle menante 9 comme cela a déjà été expliqué précédemment.According to an advantageous arrangement, the means 10, 13 of association can comprise an elastic stop system. To this end (Figures 9 and 10), the cylindrical part 28 of the groove 13 is equipped with an elastic stop 280, 281. This stop is such that in the closed closed end position, the motor being supplied, the roller 10 exerts a slight force f1 of compression on the stop, to stress the crushing thereof. In the event of a power failure, the removal of the force f1 causes the release of the stress and the release of the stop which decompresses by causing the displacement along F2 of the roller 10. This displacement has the effect of facilitating lifting of the barrier in the event of a power failure, the movement then being initiated and continued through the shape of the driving rod 9 as has already been explained previously.

La figure 11 montre une variante selon laquelle le ressort de rappel est un ressort de compression alors que dans les modes de réalisations précédents, le dispositif était équipé d'un ressort de traction. Ainsi, une tige 310, reliée à l'extrémité libre 32 de la bielle 33, comprend à son extrémité inférieure une butée 311 constituée par un écrou 312. Le ressort de compression 313 étant d'une part en appui contre cette butée inférieure 311 et d'autre part en appui sur une butée supérieure 314 constituée par le support 30 du moteur 7.FIG. 11 shows a variant according to which the return spring is a compression spring whereas in the previous embodiments, the device was equipped with a tension spring. Thus, a rod 310, connected to the free end 32 of the connecting rod 33, comprises at its lower end a stop 311 constituted by a nut 312. The compression spring 313 being on the one hand bearing against this lower stop 311 and on the other hand, bearing on an upper stop 314 constituted by the support 30 of the motor 7.

Claims (9)

  1. Arrangement for rotating the bar (1) of a mobile barrier around an axis (2) between two end positions, comprising an output shaft (3) mounted on a frame (4) so as to pivot around the axis (2), said bar (1) being rotated at one of its ends (5) by this output shaft (3), which is itself rotated by an output member (6) pivoting around an axis parallel to or convergent with the axis (2) of the bar (1), and an electric motor (7) for rotation of the output member (6), the output shaft (3) and the bar (1), said output member (6) being connected to a drive member (9) by connecting means (10, 13) to provide a connection to the pivot axis (11) capable of shifting radially in relation to the output member (6) and the output shaft (3), characterised in that the motor shaft (8) is parallel to the output shaft (3), the drive member (9) being directly rotated by said motor shaft (8), and said electric motor (7) is provided in the form of a torque motor.
  2. Arrangement according to Claim 1, characterised in that the position of the drive member (9), defined by the direction D2 passing through the axis of rotation of this member (9) and the pivot connection axis (11), and the position of the output member (6), defined by the direction D1 passing through the axis of rotation of this member (6) and the pivot connection axis (11), are substantially perpendicular to one another in at least one of the end positions of the bar (1).
  3. Arrangement according to Claim 2, characterised in that the positions of the members (6, 9) are perpendicular to one another in the two end positions of the bar (1).
  4. Arrangement according to one of Claims 1 to 3, characterised in that the output member (6) and the bar (1) are mounted on the output shaft (3) to jointly rotate with this output shaft (3), that the drive member (9) is mounted on the motor shaft (8) to jointly rotate with this motor shaft (8), that the distance L1 between the pivot connection axis (11) and the axis (14) of the motor shaft (8), the distance L2 between the pivot connection axis (11) and the axis (2) of the output shaft (3) in the end positions of the bar (1), and the distance d between the axis (14) of the motor shaft (8) and the axis (2) of the output shaft (3) confirm the equation L1 = L2 - d √2/2 (d square root of 2 divided by 2), so that the positions of both the drive and the output members (6, 9) are substantially at right angles to one another in each of the positions of the bar (1), the motor shaft (8) running at 90° between the two end positions.
  5. Arrangement according to any one of Claims 1 to 4, characterised in that the connecting means (10, 13) comprise a roller (10) mounted to freely rotate at the free end (24) of the drive member (9) around a shaft (12) parallel to the motor shaft (8) and the output shaft (3), and a radial groove (13) of the output member (6), into which said roller (10) engages so as to cooperate with the bearing surfaces (25, 26) of the groove (13) by means of contact.
  6. Arrangement according to any one of Claims 1 to 5, characterised in that the motor shaft (8) extends below and vertically to the output shaft (3), and that drive member (9) is provided in the form of a portion of a flywheel, the centre of gravity of which is eccentric in relation to the motor shaft (8) and to the position of this member (9) so as to form a return balance weight with a tendency to rotate this drive member (9) in one direction when there is no electric power supply to the motor.
  7. Arrangement according to Claim 6, characterised in that the balance weight formed by the drive member (9) exerts a restoring moment on this member (9) in the direction corresponding to the return of the bar (1) to a vertical position or to its retention in a vertical position.
  8. Arrangement according to Claims 1 to 7, characterised in that the horizontal axis (2) of the bar (1) comprises a return spring (31), which moves the output shaft (3) to assist the motor (7) to raise the bar (1) and to bring the bar (1) into a vertical position when there is no electric power supply to the motor (7).
  9. Arrangement according to any one of the preceding claims, characterised in that the connecting means (10, 13) comprise an elastic abutment (280, 281).
EP91420008A 1990-01-11 1991-01-09 Driving device to rotate the barrier arm of a movable barrier Expired - Lifetime EP0438364B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9000272A FR2656884B1 (en) 1990-01-11 1990-01-11 SMOOTH ROTATION DRIVE DEVICE OF A MOBILE BARRIER.
FR9000272 1990-01-11

Publications (2)

Publication Number Publication Date
EP0438364A1 EP0438364A1 (en) 1991-07-24
EP0438364B1 true EP0438364B1 (en) 1994-08-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP91420008A Expired - Lifetime EP0438364B1 (en) 1990-01-11 1991-01-09 Driving device to rotate the barrier arm of a movable barrier

Country Status (4)

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EP (1) EP0438364B1 (en)
AT (1) ATE109846T1 (en)
DE (1) DE69103287D1 (en)
FR (1) FR2656884B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010133764A1 (en) 2009-05-18 2010-11-25 Pg Effect Oy Apparatus for balancing an object to be reciprocated in a vertical plane along a circular orbit
CN105256739A (en) * 2015-10-09 2016-01-20 石家庄优创科技股份有限公司 Torsion spring type electric barrier machine

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT402311B (en) * 1995-03-20 1997-04-25 Skidata Gmbh SHUT-OFF DEVICE
DK0996791T3 (en) * 1997-07-17 2001-10-15 Magnetic Autocontrol Gmbh Drive device for a stop boom
IES991069A2 (en) * 1999-01-21 2000-10-04 Electro Automation Res Ear Ltd A Barrier
WO2001034915A1 (en) 1999-11-06 2001-05-17 Magnetic Autocontrol Gmbh Stop barrier device or a stop or closure device of the kind
FR2854908B1 (en) * 2003-05-13 2005-08-05 Ero Ind BARRIER FOR CONTROLLING VEHICLE ACCESS WITH AUTOMATED RETURN DEVICE, AFTER DEGUNDING
FR2927648B1 (en) * 2008-02-15 2013-06-28 Jacques Paternoster PILLAR STRUCTURE ASSOCIATED WITH A MOTORIZED PIVOTING VANTAIL
CN106638379B (en) * 2015-11-02 2019-05-03 吉大联合精密机械（厦门）有限公司 A kind of barrier gate machine core of six-bar mechanism transmission
CN111472302A (en) * 2019-01-24 2020-07-31 项强 Novel automatic barrier gate transmission of slide rail formula gravity auto-lock device
CN110541348B (en) * 2019-08-22 2024-07-16 中国船舶重工集团应急预警与救援装备股份有限公司 Self-locking type connecting mechanism

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4232484A (en) * 1977-12-21 1980-11-11 Zuhlke Engineering Ag Apparatus for moving toll bars or the like
DE3231720C1 (en) * 1982-08-26 1983-11-17 Ewald Berninghaus GmbH & Co, 4100 Duisburg Barrier for gateways and entrances to multistorey car parks, railway crossings and the like
DE8706868U1 (en) * 1987-05-13 1987-07-09 Magnetic-Elektromotoren GmbH, 7867 Maulburg Drive device for barrier or similar

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010133764A1 (en) 2009-05-18 2010-11-25 Pg Effect Oy Apparatus for balancing an object to be reciprocated in a vertical plane along a circular orbit
CN105256739A (en) * 2015-10-09 2016-01-20 石家庄优创科技股份有限公司 Torsion spring type electric barrier machine
CN105256739B (en) * 2015-10-09 2017-07-11 石家庄优创科技股份有限公司 Torsion spring type motor-driven railing machine

Also Published As

Publication number Publication date
FR2656884B1 (en) 1992-07-24
EP0438364A1 (en) 1991-07-24
DE69103287D1 (en) 1994-09-15
FR2656884A1 (en) 1991-07-12
ATE109846T1 (en) 1994-08-15

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