FR2798106A1 - LOAD BEARING SYSTEM - Google Patents

Abstract

Rolling system (1) for a conveying installation, intended for supporting and rolling a load mobile with respect to a fixed supporting structure (5), the system (1) comprising at least one running rail (3) arranged over a certain length of the supporting structure (5), the rail (3) and the supporting structure (5) being separated by a space (8), characterized in that it comprises means (9) for support and damping intended to be placed in the space between the rail (3) and the supporting structure so that the rail (3) is not rigidly and fixedly linked directly to the supporting structure (5), said means (9) being sufficiently flexible to absorb the noise and vibrations generated by the rolling of the load, and sufficiently rigid to withstand the mechanical stresses applied to the rail (3).

Description

The subject of the invention is a system for rolling a load, a

installation

  comprising such a system and a method of mounting such a system.

  This invention is more particularly intended for installations of the gondola or chairlift type. In the embarkation and disembarkation stations of detachable chairlifts and gondolas, the vehicles are decoupled from the cable, then dragged

  to be able to disembark or embark.

  During all the passage in the station, the vehicle drives on a path of

  bearing which ensures its sustenance.

  This raceway, which sometimes also serves as a guide, is rigidly mounted on the supporting structures of the station so as to ensure the

  transmission of lift and guide forces.

  The disadvantage of such rolling systems is that they cause noise during

  the arrival of vehicles at the station and their rolling.

  In addition, in conventional running rails, the running rail must be adjusted according to the construction tolerances of the supporting structure. In addition, it is difficult to be able to adapt different forms of raceway to the same support structure, these different forms being

  match different vehicles.

  This adaptation cannot be done quickly on already finished structures.

  The invention aims to overcome these drawbacks and proposes a rolling system making it possible to limit or even eliminate the vibrations and noises generated by the vehicle, to be able to use different rolling tracks for the same support structure, and to be able to overcome construction tolerances. To this end, the subject of the invention is, according to a first aspect, a rolling system for a conveying installation, intended for supporting and rolling a movable load relative to a fixed carrying structure, the system comprising at least one rail. of rolling disposed on a certain length of the support structure, the rail and the support structure being separated by a space, the system comprising support and damping means intended to be placed in the space between the rail and the support structure so that the rail is not rigidly and fixedly connected directly to the support structure, said means being flexible enough to absorb the noise and vibrations generated by the rolling of the load, and rigid enough to withstand the mechanical stresses applied to

the rail.

  According to one embodiment, the running rail has a straight cross-section in the general shape of a U, or of a V. According to one embodiment, the supporting structure comprises a receptacle extending in the direction of the rail, the support means and damping being made of a material filling at least partially the space between the rail and the support structure, the width of the receptacle being greater than the width of the rail, so that different rails can be used for the same support structure. The receptacle has in cross section a general shape of U or V,

complementary to that of the rail.

  According to one embodiment, the damping means comprise a damping material cast in place, occupying the space between the rail and the receptacle

carrier.

  The material is an elastomer, a foam, a thermo-plastic

curable or the like.

  According to another embodiment, the damping means comprise a seal

  extruded able to receive at least one rail mounting key.

  According to another embodiment, the damping means comprise at least one part in an intermediate assembly including absorbent elements

vibration and noise.

  According to one embodiment, the intermediate parts include studs

  elastics spaced along the raceway.

  The running rail comprises, according to one embodiment, means

  anchoring in the damping means.

  According to a second aspect, the invention relates to an installation for embarkation and disembarkation of detachable chairlifts or gondolas,

  comprising at least one bearing system as described above.

  According to a third aspect, the invention relates to a method for mounting a rolling system as described above, comprising the following steps: - definition of the rolling rail and of the supporting structure; placing the supporting structure, the rail and damping means between the supporting structure and the running rail, so that the vibrations and noises due to the rolling are at least partly absorbed, and

  to be able to use different raceways for the same receptacle.

  Other objects and advantages of the invention will become apparent during the course of the

  description which will be made with reference to the appended figures, in which:

  - Figure 1 is a sectional view of the bearing system according to a first embodiment of the invention; - Figure 2 is a sectional view of the bearing system according to a second embodiment of the invention; - Figure 3 is a sectional view of the bearing system according to a third

  embodiment of the invention.

  The rolling system 1 according to the invention is typically intended for an embarkation or disembarkation station for chairlifts and gondolas or

disengageable analogs.

  During all the passage in the station, the vehicle rolls on the running rail

  3 which defines the raceway 2.

  The vehicle follows the running rail 3 by a running roller 4 of a

  disengageable pliers not shown.

  The rail 3 is mounted on a support structure 5.

  A first embodiment of the invention will now be described.

  The supporting structure 5 has a fixed part 6 comprising a zone

  receptacle 7 for the running rail 3.

  Rail 3 follows a direction D in the station comprising rectilinear portions

  and typically horizontal curved portions.

  The rail 3 is intended to be mounted on the fixed part 6, at the level of the zone

  receptacle 7. A space 8 is located between the rail 3 and the receptacle area 7.

  Support and damping means 9, designated indifferently means

  in the text, are located in space 8.

  The rail 3 comprises a horizontal wall 10 and two side walls 11, 12 substantially vertical. Rail 3 is typically made of steel. The rail 3 has a width I and a depth h. The receptacle zone 7 comprises a horizontal face 13 facing the wall, a side face 14 facing the side wall 11, and a side face 15 facing the side wall 12. The horizontal face 13 has a width L, the faces 14 and 15 have a height H. The distance L is greater than the distance I in order to accommodate the rail 3 in the

  receptacle 7. For example, 1 = 65mm, L = 110Omm, h = 36mm, H = 50mm.

  The receptacle zone 7 typically extends continuously over the entire length of the rail 3 and below. According to a variant, this zone 7 is discontinuous

  but of sufficient width and strength to support the rail.

  The upper ends 16, 17 of the side walls 11, 12 are situated substantially in the plane, or near the plane comprising the ends 18,

19 of the side faces 14, 15.

  The roller 4 is in contact with the side wall 10, and bordered by the

lateral faces 14, 15 of the rail 3.

  The space 8 is filled by the damping means 9 which are provided under

  the shape of an elastomer or similar material matrix 20.

  The space 8 is filled substantially at the ends 18, 19. The elastomer 20 ensures the positioning and the horizontal and vertical maintenance of the

rail 3.

  The mounting of the rail 3 on the fixed part 6 of the supporting structure 5 is done as follows: by placing it, the product damping in this case the elastomer 20, which will both support and maintain places the rail 3 securely. When the rigid rail 3 is put in place, this rail 3 is positioned with respect to a general geometric need which then overcomes

  construction imperfections of the fixed part 6.

  When the load is rolling, the noise and vibrations are transmitted to the damping means 9 and not directly to the receptacle 7, which are capable of absorbing the mechanical stresses applied to the rail 3 in the horizontal and vertical directions. By the term absorb, we mean, depending on the material used, to absorb by accumulating energy without dissipating it, or by dissipating it. Thanks to this arrangement, it is possible to adapt different shapes of rail 3 to the same

  fixed part 6 and therefore with the same supporting structure 5.

  For example, by increasing the amount of elastomer 20, one can use a

  another rail 3 of different dimensions, for example of smaller width.

  The structure of the rail 3 and of the receptacle zone 7 described can be adjusted if necessary. For example, the walls 11, 12 of the rail 3 are not parallel. One can use a rail 3 having walls 11,12 inclined with respect to the vertical extending downwards the horizontal face 10, intended to facilitate anchoring

in elastomer 20.

  The receptacle zone 7 can moreover be made in one piece with, or fixed to,

the fixed part 6.

  The supporting structure 5 comprises a receptacle 7 (Figure 2).

  The receptacle zone 7 has a central face 21, a lateral face 22 and a lateral face 23. The face 22 ends in a fold 24, the face 23 ends in

a downturn 25.

  The rail 3 comprises a central wall 26 facing the face 21, a side wall 27 facing the face 22, and a side wall 28 facing the face 23. The damping means 9 are in the form of '' an extruded joint

  9a for mounting and hanging the rail 3.

  For better maintenance of the rail 3, this rail may for example have two wings 29, 30 for anchoring in the extruded joint. According to a variant, the two wings

  include multiple non-aligned segments.

  The rolling system 1 may further comprise, for a defined rail length, two keys 31a, 31b on either side of the rail 3, in the form of profiles, extending longitudinally between the folds 24, 25 and the walls 27 , 28. These

keys are in extruded joint.

  In the first as in the second embodiment, the damping means 9 can be arranged continuously along the rail 3, or in several successive spaced zones. The choice is made in particular according to the type of station used, the size of the devices, the noise reduction

  and desired vibration, cost and difficulty of mounting.

  Alternatively, the elastomer 20 includes stiffening elements made of metal or an alloy extending continuously or discontinuously in the elastomer.

  A third embodiment of the invention will now be described.

  The supporting structure 5 does not include a receptacle 7 (FIG. 3).

  The fixed part 6 and the running rail 3 are connected by damping means 9 in the form of intermediate parts 32 integrating elements absorbing vibrations and noise. For example, the intermediate pieces 32 are studs spaced along the rail 3 every 10 cm approximately

  or forming a continuous or discontinuous strip along the rail 3.

  For example, the elastic studs 32 are standard studs fixed to the fixed part 6 and suitable for receiving different rails 3. For example, the studs 32 are connected to the rail 3 by means of fixing screws 33, 34. The screws 33, 34 are fixed on two

  wings 35, 36 horizontal and straight extending the face 37 of the rail 3.

  The rail 3 and the intermediate parts 32 can be combined by gluing, tightening, screwing or the like, depending on the mechanical strength required for

support rail 3.

  The studs are capable of withstanding the forces in the vertical and

  horizontal due to the rolling of the load.

  Also instead of two spaced elastic pads, we can consider a

  flat plastic bar, fixed to the fixed part 6.

  It is understood from the above description, that the structure of the rail 3 and

  damping means 9 can be very variable depending on the needs related to noise and vibration, and the ease of changing the rail 3 for the same part

fixed 6 of a supporting structure 5.

Claims (12)

  1. Rolling system (1) for a conveying installation, intended for supporting and rolling a mobile load relative to a fixed carrying structure (5), the system (1) comprising at least one rolling rail (3 ) disposed over a certain length of the support structure (5), the rail (3) and the support structure (5) being separated by a space (8), characterized in that it comprises support means (9) and damping intended to be placed in the space between the rail (3) and the supporting structure so that the rail (3) is not rigidly and fixedly connected directly to the supporting structure (5), said means (9) being flexible enough to absorb the noise and vibrations generated by the rolling of the load, and rigid enough to   withstand the mechanical stresses applied to the rail (3).   2. Rolling system (1) according to claim 1, characterized in that the running rail (3) has in straight cross section a general shape of U or V. 3. Rolling system (1) according to claim 1 or 2, characterized in that the carrying structure comprises a receptacle (7) extending in the direction of the rail, the means (9) for support and damping being in a material filling at least partially the space (8) between the rail and the supporting structure (5), the width of the receptacle being greater than the width of the rail, so that different rails (3) can be used for the same structure carrier. 4. Rolling system according to claim 3, characterized in that the receptacle (7) has in cross section a general shape of U or V complementary to that of the rail.   5. Rolling system according to any one of claims 3 to 4,   characterized in that the damping means (9) comprise a damping material (20) cast in place, occupying at least partially the space between the rail (3) and the receptacle (7).   6. Rolling system according to claim 5, characterized in that the material is an elastomer, a foam, a thermo-plastic curable or the like.   7. Rolling system according to any one of claims 3 or 4,   characterized in that the damping means (9) comprise a seal   extruded (9a) capable of receiving at least one rail mounting key.   8. Rolling system according to claim 1, characterized in that the damping means (9) comprise at least one intermediate part (32),   including vibration and noise absorbing elements.   9. Rolling system according to claim 8, characterized in that the intermediate parts (32) comprise elastic studs spaced along the Raceway.   10. Rolling system according to any one of claims 1 to 9,   characterized in that the rolling rail (3) comprises anchoring means   in the support and damping means.   11. Installation for embarkation and disembarkation of detachable chairlifts or gondolas, characterized in that it comprises at least one   bearing system according to any one of claims 1 to 10.   12. A method of mounting a rolling system according to any one of claims 1 to 9 characterized in that it comprises the following steps: - definition of the rolling rail (3) and the supporting structure (5); - Installation of the support structure (5), the rail (3) and means (9) for support and damping between the running rail and the support structure; It so that the vibrations and noises due to rolling are at least partly absorbed, and to be able to use different raceways for a same supporting structure.