FR3074248A1 - BELT DRIVE SYSTEM OF A DOCK BEARING DOOR VANTAIL - Google Patents

Abstract

The belt drive system (70) of a door leaf door leaf, the leaf being movable relative to a fixed panel in a horizontal translational movement in a plane of the leaf between open and closed positions in which the leaf releases or obstructs at least part of an opening adjacent to the fixed panel, comprising: - a leaf drive belt (7), linked to the leaf, so as to move the leaf between the closed and open positions, - At least a guide pulley and drive, mounted on the fixed panel and cooperating with the belt (7) to guide and drive it, and - a regulating device (10) of a tension of the belt (7) arranged so as to maintain a tension of the belt around a predetermined nominal operating value.

Description

SYSTEM

BELT DRIVE OF A QUAY DOOR PORTAL

The invention relates to a belt drive system of a platform landing door leaf, as well as a platform landing door equipped with such a training system.

The quay façades make it possible to isolate the quay platform as such from the taxiway along which the quay extends, when no traffic occurs on said taxiway. However, when a train is parked alongside the platform, the platform front must allow access to users of the passenger cars of the parked train. For this, the platform facade comprises a series of landing doors arranged so as to extend opposite the access doors of passenger cars likely to park along the platform. In a manner known per se, a platform landing door forms a module which is composed of at least one fixed panel and an associated sliding leaf which can move between an open position and a closed position (and vice versa) in a direction horizontal in the plane of the leaf and substantially parallel to a platform nose on which the landing door is positioned. In the open position, the leaf at least partially clears an opening allowing passage for users adjacent to the fixed panel of the landing door. In the closed position, the leaf obstructs this opening. For this, a drive system comprising a motorization is provided between the fixed panel and the associated sliding leaf to move the associated sliding leaf in its translational movements between the open and closed positions.

In general, platform landing doors have two pairs of fixed panels / sliding leaves symmetrically positioned in a mirror. The two fixed panels are separated from each other by a door threshold, the assembly delimiting the opening allowing the passage of users. The two sliding leaves then have the possibility of moving in horizontal translation movements in the plane of the leaves which are symmetrical to each other between the closed position and the open position and vice versa. For each landing door, at least one of the sliding leaves has

a associated drive system and motorization. In the if only one of the two sliding leaves has a

drive system and motorization, the other leaf is equipped with a tension and alignment system.

Thus, in an embodiment known from documents FR3039581 and CN203361842, the drive system is a belt drive system common to the two sliding leaves of the landing door. The leaf drive belts run under the door threshold between the two fixed panels of the landing door. The platform, where the landing door is installed, is produced by civil engineering and generally comprises a succession of adjacent platform portions two by two separated by an expansion joint. This allows the quay portions to be able to expand or retract under the effect of thermal differences between day and night as well as according to the cycles of the seasons. These movements can reach a few centimeters. However, in the arrangement of such a quay, the landing door can be installed astride such an expansion joint. In this case, the two fixed panels of the landing door are placed on either side of said expansion joint: they move away or approach each other according to the dilations / retractions of the two quay portions adjacent separated by the expansion joint. This has a direct effect on the tension of the belts of the belt drive system of the landing door, an effect which can lead either to a rupture of the belt (s) due to a high tension generated by a distancing of the fixed panels from each other, or to a defect in the drive of the belt (s) by the motorized pulley due to a loss of tension generated by a bringing together of the fixed panels one of the other.

An object of the invention is to provide a belt drive system for a sliding leaf of platform landing door which can adapt to the relative movements of the fixed panels.

To this end, there is provided according to 1 invention, a belt drive system of a platform landing door leaf, the leaf being able to move relative to a fixed panel in a movement of horizontal translation in a plane of the leaf between open and closed positions in which the leaf opens or at least partially obstructs an opening adjacent to the fixed panel, comprising a leaf drive belt, linked to the leaf, so as to move the leaf between the closed and open positions, at minus a guide and drive pulley, mounted on the fixed panel and cooperating with the belt to guide it and

Drive, a belt tension regulating device arranged so as to maintain a belt tension around a predetermined nominal operating value.

Advantageously, but optionally, the drive system according to the invention has at least one of the following additional technical characteristics:

- the regulating device is positioned in the belt;

- the regulating device is positioned between the pulley and the fixed panel;

- The regulation device comprises an elastically deformable element;

- The regulating device further comprises a means for adjusting a deformation of the elastically deformable element;

- the elastically deformable element is a compression spring;

- the regulating device comprises a damping element to prevent the effects of jerks due in particular to the accelerations and decelerations of the leaves - the damping element is mounted in parallel with

The elastically deformable element in the regulating device.

According to the invention, there is also provided a platform landing door comprising a first fixed panel and a first leaf which can move relative to the first fixed panel in a horizontal translational movement in a plane of the leaf between open and closed positions. in which the first leaf releases or at least partially obstructs an opening adjacent to the first fixed panel, the platform landing door comprising a belt drive system for the first leaf according to the invention.

Advantageously, but optionally, the landing door according to the invention has at least one of the following additional technical characteristics:

the landing door has a second fixed panel (3 separate from the first fixed panel a second leaf (2 ') which can move relative to the second fixed panel in a horizontal translational movement in a plane of the leaf between open and closed positions in which the second clears or partially obstructs the opening, horizontal translation of the second symmetrical of the leaf translation movement, the leaf movement being horizontal from the first leaf; and a belt drive system from the to the second leaf according to the invention;

belt drive system is unique and common first and second leaves.

Other characteristics and advantages of the invention will become apparent from the following description of an embodiment given purely by way of illustration. In the accompanying drawings:

- Figure 1 is a schematic view of the principle of a landing door according to the invention comprising a belt drive system according to the invention;

- Figure 2 is a partial schematic view of a first embodiment of the belt drive system according to the invention; and,

- Figure 3 is a schematic view of a second embodiment of the belt drive system according to the invention.

With reference to FIG. 1, as we indicated in the preamble to this description, a landing door 1 comprises, here, from one end to the other, a first fixed panel 3, a first sliding leaf 2 associated with the first fixed panel 3, a second sliding leaf 2 ', and a second fixed panel 3' associated with the second sliding leaf

2 '.

A door threshold separates the two fixed panels 3 and 3 'from one another and defines with it an access opening adjacent to the fixed panels 3 and

3 '. The first and second sliding leaves are mounted movable in horizontal translation in the plane of the sliding leaf associated with them via

Thus, each leaf closed in which there on the fixed panel 3, 3 'which a guide and support system.

sliding obstructs adjacent 6 and a position less partially opening two symmetrical sliding translation leaves and, driving movements in more detail may be less open in taking a partly 1 which it adjacent 6 above. From the open position, at most, the belt translations 70 plus

The landing door 1 from the engineering is animated preferably, synchronized movements.

are made by one according to the invention which is far in the description.

is positioned on the edge of one of

The system describes civil wharf.

As already indicated in the preamble to the description, the platform is formed by a succession of adjacent platform portions two by two.

Here in the figure

1, are quay quay represented by the first 51 adjacent. The first 51 are expansion between cycle carries the des and second and second separated by an expansion joint

53.

absorbs movements two portions of the platform thermal differences portions portions

The relative joint of de and 52, relative movements undergone by platform 5 (due to the day / night stage dilation 53, and to the cycle of Figure 1, the position straddling the joint of the first fixed panel being fixed on the first portion of platform 51 and the second fixed panel

3 'being fixed on the second quay portion 52. Therefore, the first 3 and second 3' fixed panels follow the relative movements of the first 51 and second 52 quay portions.

We will now, with reference to FIGS. 1 and 2, describe a belt drive system 70 according to the invention making it possible to move the sliding leaves 2 and 2 ′ of the landing door 1 according to the invention in a synchronized manner.

The belt drive system according to the invention is here illustrated very schematically.

It comprises at least one belt 7 linked to the first 2 and second 2 'door leaves of the landing door 1, so as to be able to drive the first and second leaves in their translational movement. The belt drive system 70 according to the invention further comprises a first pulley 31 mounted movable in rotation about its axis on the first fixed panel and a second pulley 31 'mounted movable in rotation along its axis on the second fixed panel 3 . The first 31 and second 31 'pulleys cooperate with the belt 7 to synchronously move the first 2 and second 2' leaves of the landing door 1. At least one of the first 31 and second 31 'pulleys is motorized.

Because the landing door 1 is installed astride the expansion joint 53, the first 31 and second 31 'pulleys mounted on the first 3 and second 3' fixed panels consequently follow the relative movements 54 between the two quay portions 51 and 52. In order to absorb these relative movements 54, the belt drive system according to the invention comprises a device for regulating a tension of the belt 7.

The role of this belt tension regulating device 10 is to ensure optimum tension of the belt 7 whatever the relative movements undergone. For this, the device 10 for regulating a tension of the belt 7 comprises, here, an elastically deformable element 14, forming a spring, as well as a piston body and a piston 12 which translate in the piston body 11 to be moves in

1 against the elastically deformable element 14. For example, here,

The elastically deformable element is a compression spring. Other elastically 14 are forms and types of deformable element possible such as a tension spring.

In order to adjust a tension to a predetermined nominal value maintained in the belt 7, the device 10 for regulating a tension of the belt 7 comprises an adjustment means 15 for the elastically deformable element 14. Here, the adjustment means 15 is a screw, or bolt, screwed through a wall of the piston body 11 and of which a free end opposite the screw head comes to bear on one end of the elastically deformable element so as to allow it to apply a deformation nominal to ensure the desired nominal tension in the belt 7. As a variant, the device 10 for regulating a tension of the belt 7 comprises an adjustment means 15 consisting of a screw pulling on the piston 12 and not on the elastically deformable element 14.

In the embodiment of the belt drive system 70 according to the invention illustrated in FIG. 2, the device 10 for regulating a tension of the belt 7 directly links two portions of the belt 7: one end of the belt 7 is fixed on the piston body 11 while the other end of the belt 7 is fixed on the piston 12. Once the landing door 1 installed on the platform 5, the relative movements 54 are reflected on the regulating device 10 of a tension of the belt 7 in that the piston 12 moves relative to the piston body 11 according to these relative movements 54. Consequently, the elastically deformable element 14 deforms around the nominal deformation previously set and the tension in the belt 7 varies around the predetermined nominal tension in an interval which avoids any risk of reaching a breaking tension of the belt 7 and any risk of drive failure caused a loss of too large voltage: thus the movement of the leaves 2 and 2 'is ensured whatever the relative movement 54 suffered by the landing door 1 according to the invention.

On the other hand, the device for regulating a tension in the belt comprises a damping element 13 ′ against which the piston 12 moves in the piston body.

The damping element is, here, mounted in parallel with

The elastically deformable element.

The damping element 13 has the role of avoiding the jerky movements of the leaves 2 and

2 'during accelerations and decelerations at the start and end of leaf movements and

2 'passing between their open and closed positions.

In Figure 3 is described a second embodiment of a belt drive system 700 according to the invention.

This embodiment of the belt drive system

700 according to the invention differs from the first embodiment of the belt drive system previously described by the fact that the device 10 for regulating a belt tension is not installed directly in the belt 7 but is interposed between one of the first and second

31 'pulleys and the fixed panel 3, 3' associated with it. Here, illustrated, it is the second pulley 31 'which is then mounted free in rotation and in translation (in a translational movement second fixed panel 3'. The operation of the device 10 for regulating a belt tension 7 is unchanged.

It should be noted, although described very schematically, that the belt drive system 70,700 according to the invention is easily applicable to a belt drive system as described in the documents

FR3039581 and CN203361842 to which it is possible to refer for further information.

Of course, it is possible to make numerous modifications to the invention without going beyond the scope thereof.

Claims (7)

Belt drive system (70; 700) of a leaf leaf movement between which the (1) platform, the leaf horizontal translation in the open positions and the leaf releases or obstructs one that can, according to a plane of the closed in at least partly a fixed panel opening, comprising A leaf drive belt (7), linked to the leaf, so as to move the leaf between the closed and open positions, At least one guide and drive pulley, mounted on the fixed panel and cooperating with it to guide it and 1'drive, characterized in that the belt drive system further comprises a regulating device to maintain a tension of the belt around a predetermined nominal operating value. 2. System according to the claim 1 characterized in this than the device of 'regulation East positioned in the belt. 3. System according to the claim 1 characterized in this than the device of regulation East positioned Between the pulley and fixed panel. 4. System according to one of claims 1 to 3, characterized in that the regulation device comprises an elastically deformable element (14). 5. System according to claim 4, characterized in that the regulation device further comprises means for adjusting (15) a deformation of the elastically deformable element. 6. System according to claim 4 or 5, characterized in that the elastically deformable element is a compression spring. 7. System according to one of claims 1 to 6, characterized in that the regulation device comprises a damping element (13). 8. System according to claim 7 and one of claims 4 to 6, characterized in that the damping element is mounted in parallel with the elastically deformable element in the regulation device. 9. Platform landing door (1) comprising a first fixed panel (3) and a first leaf (2) which can move relative to the first fixed panel in a horizontal translational movement in a plane of the leaf between open and closed positions in which the first leaf clears or at least partially obstructs an adjacent opening (6) to the first fixed panel, characterized in that it comprises a belt drive system (7,70) of the first leaf according to one of the claims 1 to 8. 10. Landing door according to claim 9, characterized in what it entails: a second fixed panel (3 '), separated from the first fixed panel by the opening (6); a second leaf (2 ') which can move relative to the second fixed panel in a horizontal translational movement in a plane of the leaf between open and closed positions in which the second leaf partially clears or obstructs the opening, the translational movement horizontal of the second leaf being symmetrical with the horizontal translational movement of the first leaf; and, a belt drive system of the second leaf according to one of claims 1 to 8. 11. Landing door according to claim 10, characterized in what the belt drive system is unique and common to the first and second leaves. 1/1