FR3143644A1 - Method for replacing a sub-assembly of a door drive device - Google Patents

Abstract

The subject of the present invention is a method for replacing a door drive device (31), comprising the following steps: - dismantling of a first batch of wall fixings (191, 192, 193), - nesting of the replacement motor (28) in the tube (273), - fitting of a winding drum (24) onto the tube (273), - fixing to the wall (33) of the bearing (292) and the plate ( 291) for fixing the motor above and on either side of the bay (32), the bearing (292) and the plate (291) for fixing the motor being spaced by a length substantially equal to that of the tube (273), - positioning the tube (273) so that the second motor (28) is fixed on the motor fixing plate (291) and the tube (292) is supported by the bearing (292). The invention also relates to a replacement subassembly of a drive device. Figure for abstract: 7

Description

Method of replacing a subassembly of a door drive device Technical field of the invention

The present invention relates to the replacement of a drive device for a door, of the sectional type, operated in closing or opening relative to a bay.

The invention relates more particularly to a method for replacing a first subassembly with a second subassembly of a drive device of such a door. The invention also relates to a subassembly for replacing a drive device of a door.

Technical background

A door drive device allows a sectional door, such as a garage door, to be operated to close or open.

In a manner known per se, the drive device makes it possible to drive the door in translation, in one direction or the other, in guide rails by means of rollers associated with the door. Conventionally, the door is driven by two cables distributed across the width of the door. Each cable has a first end fixed to a lower part of the door and a second end fixed to a winding drum. Thus, the drive device comprises two winding drums allowing the winding and unwinding of their respective cable so as to drive the door. The two drums are fixed to the two opposite ends of an upper axle placed above the door. A motor makes it possible to drive the upper axle in rotation to wind or unwind the cables on their respective drum.

Furthermore, in order to prevent a phenomenon of twisting of the upper axis under the effect of the weight of the door, the drive devices of a door conventionally comprise at least one of the following elements:
- intermediate bearings, in sufficient number to prevent bending of the shaft,
- a door weight compensation device comprising one or more compensation springs, connected to the cables, constituting a balancing means,
- a coupling between two shaft portions to be connected, particularly for very long doors.

The cost of replacing such a device, in the event of a breakdown for example, is very high both in terms of the cost of the material and the cost of labor. Indeed, the cost of the material is high because of the complex elements that compose it, in particular the door weight compensation device. In addition, the cost of labor is high because the installation and adjustment time required to set up such a complex device is significant.

The aim of the present invention is to propose a method and a subassembly allowing the replacement of a door drive device at lower cost.

The invention proposes a method for replacing a first subassembly with a second subassembly of a drive device for a door, of the sectional type, actuated in closing or opening relative to a bay provided in a wall,
the first subset comprising:
- at least one first winding drum allowing the winding and unwinding of at least one cable so as to drive the door in translation, in one direction or the other, in guide rails comprising at least one vertical section, by means of rollers associated with the door, the cable comprising a first end fixed to a lower part of the door and comprising a second end fixed to the winding drum,
- a first upper axis secured to the first winding drum, the first upper axis being fixed above the bay,
- a first rotary drive motor driving the first upper axis,
- a first batch of wall fixings ensuring the maintenance of the first upper axis and the first motor above the bay;
the second subset comprising:
- a second upper axis comprising a tube having a polygonal section,
- at least one second winding drum with an internal section identical, apart from the mounting clearance, to the external section of the tube,
- a second motor comprising a shaft comprising an interface portion of external section identical, apart from the mounting clearance, to the internal section of the tube,
- a second set of wall brackets including a bearing and a motor mounting plate;
the method being characterized in that it comprises the following steps:
- dismantling of the first batch of wall fixings so as to separate the first drive motor, the first upper axle and the first winding drum from the wall,
- fitting the second motor into the tube,
- fitting the second winding drum onto the tube,
- fixing the landing and the motor mounting plate to the wall above and on either side of the bay, the landing and the motor mounting plate being spaced apart by a length substantially equal to that of the tube,
- positioning the tube so that the second motor is fixed to the motor mounting plate and the tube is supported by the bearing.

According to other characteristics of the invention:

- the first subassembly further comprising a door weight compensation mechanism, the method comprises a preliminary step of deactivating the door weight compensation mechanism, the step of dismantling the first batch of wall fixings making it possible to further dismantle the door weight compensation mechanism;

- the method further comprises a step of cutting the tube of the second upper axis to a length substantially identical to that of the first upper axis,

- the method further comprises a step of screwing the interface portion of the motor to the tube,

- the process includes a step of screwing the drum to the tube,

- the method includes a step of screwing the motor to the motor mounting plate,

- the second subassembly further includes an anti-fall safety device comprising:
a support,
a wheel mounted on the support,
a rod capable of being mounted freely in rotation about the axis of the wheel, the rod comprising a hooking portion of external section identical, apart from the mounting clearance, to the internal section of the tube,
a locking mechanism designed to block rotation of the rod when the rotational speed of the rod exceeds a threshold value;

the method further comprising the following steps:
fitting the rod into the tube,
fixing the rod on the wheel axle,
fixing the support to the bearing;

- the method includes a step of screwing the attachment portion of the rod onto the tube.

The invention also relates to a replacement subassembly of a drive device for a door, of the sectional type, actuated in closing or opening relative to a bay, the replacement subassembly comprising:
- at least one winding drum allowing the winding and unwinding of at least one cable so as to drive the door in translation, in one direction or the other, in guide rails comprising at least one vertical section, by means of rollers associated with the door, the cable comprising a first end fixed to a lower part of the door and comprising a second end intended to be fixed to the winding drum,
- an upper shaft secured to the winding drum, the upper shaft being intended to be fixed above the bay by a first and a second end,
- a rotary drive motor fixed to the first end of the upper shaft,
- two side wall mounts, one associated with the motor, and the other with a bearing supporting the second end of the upper axle,
the subset being such that:
- the upper axis is formed by a tube, the section of the tube being of dimensions and polygonal shape determined according to the weight of the door and its length, to give the tube resistance to bending and twisting, allowing it to free itself from any other intermediate wall support,
- the internal section of the winding drum is identical, apart from the mounting clearance, to the external section of the tube with which it is associated,
- the motor comprises a shaft comprising an interface portion of external section identical, apart from the mounting clearance, to the internal section of the tube.

According to other characteristics of the invention:

- the subassembly comprises two winding drums;

- the subassembly also includes an anti-fall safety device comprising:
a support,
a wheel mounted on the support,
a rod capable of being mounted freely in rotation about the axis of the wheel, the rod comprising a hooking portion of external section identical, apart from the mounting clearance, to the internal section of the tube,
a locking mechanism designed to block rotation of the rod when the rotational speed of the rod exceeds a threshold value.

Thus, according to the invention, the time required to replace a sectional door with such a device has been significantly reduced, as well as its size and, of course, its cost price.

The invention also reduces the risk of injury associated with the use of a tension bar when tensioning springs since the upper axle in the invention does not include a spring for absorbing torsional forces. Furthermore, since the replacement method is simple and less dangerous, it is not necessary to call upon a qualified person to implement it, unlike the replacement methods of the prior art.

Brief description of the figures

Other features and advantages of the invention will become apparent upon reading the detailed description which follows, for the understanding of which reference will be made to the appended drawings in which:

is a front view of a drive device, comprising a subassembly according to the invention, intended for a sectional type door, not shown for a better understanding of the invention.

is a right view of the device according to the ;

is an enlarged scale view of the device, according to the top view of the , with some of its components broken apart;

is a perspective view, on an enlarged scale, of detail A according to the , showing the engine side of the device, located on the left;

is a perspective view, on an enlarged scale, of detail B according to the , showing the landing side of the device, located on the right;

is a perspective view of a subassembly to be changed in a first disassembly step;

is a perspective view of the subset of the in a second disassembly stage;

is a perspective view of the subset of the in a third disassembly stage;

is a perspective view of the subset of the in a fourth disassembly stage;

is a perspective view of a subassembly according to the invention before assembly;

is a perspective view of the subset of the in a first assembly stage;

is a perspective view of the subset of the in a second assembly stage;

is a perspective view of the subset of the in a third assembly stage;

is a perspective view of the subset of the in a fourth assembly stage;

is a perspective view of the subset of the in a fifth assembly step;

is a perspective view of the subset of the in a sixth assembly stage;

is a perspective view of the subset of the in a seventh assembly step;

is a perspective view of the subset of the in an eighth assembly stage;

is a perspective view of the subset of the in a ninth assembly stage;

is a perspective view of the subset of the in a tenth assembly stage;

is a perspective view of a drive device during a step of reinforcing the attachment of the first end of the cable to the lower part of the door according to the invention.

Detailed description of the invention

For the description of the invention and the understanding of the claims, the vertical, longitudinal and transverse orientations according to the reference V, L, T indicated in the figures, the longitudinal L and transverse T axes of which extend in a horizontal plane, will be adopted as a non-limiting example and without limiting reference to the Earth's gravity. By convention, the vertical axis is oriented from bottom to top, the longitudinal L axis is oriented from back to front and the transverse T axis is oriented from right to left.

In the following description, identical, similar or analogous elements will be designated by the same reference numbers.

The present invention provides a method and a subassembly allowing the replacement of a door drive device, for example when the existing drive device is faulty or obsolete.

Thus, the method of the invention carries out the replacement of a first subassembly 1, an example of which is shown in Figures 6a to 6d, by a second subassembly 2, an example of which is shown in Figures 1 to 5 and 7 to 9.

The drive device sets in motion a door 31, of the sectional type, actuated in closing or opening relative to a bay 32 provided in a wall 33. The device could be envisaged for a tilting type door.

The drive device comprises at least one cable 5 driving the door 31 in translation, in one direction or the other, in guide rails 6. In the example of FIGS. 1 to 5, the device comprises two cables 5, including a left cable comprising a first end 51 fixed to a lower left part of the door 31 and a right cable comprising a first end 51 fixed to a lower right part of the door 31.

The drive device comprises two guide rails 6, a right rail placed to the right of the bay and a left rail placed to the left of the bay. Each rail 6 comprises a vertical section placed on a lateral edge of the bay 32, a horizontal section placed in an upper extension of the vertical section and a curved connecting portion forming a connecting fillet between the vertical section and the horizontal section.

The door 31 comprises one or more rollers on its left edge arranged to roll in the left rail 6 as well as one or more rollers on its right edge arranged to roll in the right rail 6. The combination of the rollers and the rails 6 makes it possible to guide the door 31 in sliding along the rails 6.

The first subset 1 includes:
- at least one winding drum 14,
- a first upper axis 17 secured to the first winding drum(s) 14,
- a first rotary drive motor 18 driving the first upper axis 17,
- a first batch of wall fixings 191, 192, 193 ensuring the maintenance of the first subassembly 1 above the bay 32.

In the example of Figures 6a to 6d, the first subassembly 1 comprises two first winding drums 14, including a first left winding drum 14 associated with the left cable 5 and a first right winding drum 14 associated with the right cable 5. Each cable 5 comprises a second end 52 fixed to the first winding drum 14 associated with it. Each first winding drum 14 allows the winding and unwinding of the cable 5 with which it is associated. Each first winding drum 14 is positioned above the bay directly above the point of attachment to the door 31 of the first end 51 of the cable 5 with which it is associated.

The first left winding drum 14 is fixed on a left end of the first upper shaft 17 and the first right winding drum 14 is fixed on a right end of the first upper shaft 17. The first upper shaft 17 is fixed above the bay 32.

The first rotary drive motor 18 is fixed to a right end of the first upper shaft 17 so as to drive the first upper shaft 17 to rotate.

The first set of wall mounts 191, 192, 193 comprises a motor mounting plate 191, a side bearing 192 and an intermediate bearing 193 ensuring the maintenance of the first upper axis 17 and the first motor 18 above the bay 32. The plate 191 is screwed to the motor housing 18.

As an example and optionally, the first subset 1 represented in the further comprises a compensation mechanism 11 for the weight of the door 31. In the example shown in , the compensation mechanism comprises two springs 111 and 112 each connected to a fall arrest device 113 and 114. The fall arrest devices 113 and 114 are fixed to the wall substantially at the center of the first upper axis 17 by means of wall fixings forming part of the first batch of wall fixings.

The spring 111 extends in the main direction of the first upper axis 17 and in particular allows the recovery of torsional forces. The spring 111 comprises a first end fixed to an element of the fall arrest device 113 comprising a safety lug and a second end fixed to the first upper axis 17. If the spring 111 breaks, the element of the fall arrest device 113 comprising the lug is released and the lug is housed in a notch of a toothed wheel of the fall arrest device 113 secured to the first upper axis 17, thus blocking the first upper axis 17 in rotation. The operation of the spring 112 and the fall arrest device 114 is similar to that which has been described for the spring 111 and the fall arrest device 113.

Figures 1 to 5 illustrate a training device comprising a replacement subassembly 2 according to the invention.

Replacement subassembly 2 includes:
- at least one second winding drum 24,
- a second upper axis 27 secured to the second winding drum 24,
- a second rotary drive motor 28 driving the second upper axis 27,
- a second batch of lateral wall fixings 291, 292.

In the following description, the elements of the second replacement subset 2 are designated interchangeably by:
- second winding drum 24 or winding drum 24,
- second upper axis 27 or upper axis 27,
- second engine 28 or engine 28,
- second batch of wall fixings 291, 292 or wall fixings 291, 292.

In the example of Figures 1 to 5, the subassembly 2 comprises two winding drums 24, including a left winding drum 24 associated with the left cable 5 and a right winding drum 24 associated with the right cable 5. Each cable 5 comprises a second end 52 fixed to the winding drum 24 associated with it. Each winding drum 24 allows the winding and unwinding of the cable 5 with which it is associated. Each winding drum 24 is positioned above the bay directly above the point of attachment to the door 31 of the first end 51 of the cable 5 with which it is associated.

The upper axis 27 is intended to be fixed above the bay 32 by a first and a second end 271, 272.

The upper axis 27 is formed by a tube 273. The section 274 of the tube is of dimensions and polygonal shape determined according to the weight of the door 31 and its length, to give the tube 273 resistance to bending and twisting, allowing it to free itself from any other intermediate wall support.

Tests have shown that a cylindrical tube with a diameter of approximately 100 mm gives particularly good results for a sectional door weighing less than or equal to 350 kg.

The tests also demonstrated that results superior to the previous ones could be obtained when the section of the tube 273 supporting the winding drums 24 of the cables 5 is polygonal.

As an example of embodiment, according to the present case shown in the figures, the section of the tube 273 is octagonal. Of course, it could be of any other shape.

As clearly visible in Figures 4 and 5, the internal section of the winding drums 24 is identical, apart from the assembly clearance, to the external section of the tube 273 with which they are associated. In this way, the tube 273 and the drums 24, once fitted together, are integral in rotation in a particularly effective manner. The sliding immobilization of one relative to the other is achieved by means of screws.

The rotary drive motor 28 is fixed to the first end 271 of the upper shaft 27 by fitting. More particularly, the motor 28 comprises a shaft 281 comprising an interface portion 282 of identical external section, apart from the mounting clearance, to the internal section of the tube 273. In this way, the tube 273 and the motor 28, once fitted together, are integral in rotation in a particularly effective manner. The sliding immobilization of one relative to the other is achieved by screwing the interface portion 282 of the motor to the tube 273 by means of screws.

The two lateral wall mounts 291, 292 comprise a bearing 292 and a motor mounting plate 291.

As detailed in , plate 291 is screwed to the motor housing 28.

As the , the bearing 292 supporting the second end 272 of the tube 273 is associated with a fall-prevention safety device 10 commonly called a “parachute” in the field. The fall-prevention safety device 10 comprises:
- a support 101 screwed onto the bearing 292.,
- a wheel 102 mounted on the support 101,
- a rod 103 capable of being mounted freely in rotation along the axis 104 of the wheel, and
- a locking mechanism, for example a ball bearing, designed to block the rotation of the rod 103 when the rotation speed of the rod 103 exceeds a threshold value.

The rod 103 comprises a hooking portion 105 of identical external section, apart from the assembly clearance, to the internal section of the tube 273. In this way, the tube 273 and the fall prevention safety device 10, once fitted together, are rotationally integral in a particularly effective manner. The sliding immobilization of one relative to the other is achieved by screwing the hooking portion 105 of the rod 103 onto the tube 273 by means of screws.

The rod 103 is mounted on the wheel 104 by keying.

The following description aims to provide an example of implementation of the method of the invention. The method comprises the following steps:
- dismantling of the first batch of wall fixings 191, 192, 193,
- cutting of the tube 273 of the second upper axis 27,
- fitting the second motor 28 into the tube 273,
- fitting the second winding drum 24 onto the tube 273,
- fixing to wall 33 of bearing 292 and plate 291,
- installation of tube 273.

Optionally, the method includes a preliminary step of deactivating the door weight compensation mechanism 11.

Also optionally, the method comprises one or more of the following additional steps:
- screwing the interface portion 282 of the motor to the tube 273,
- screwing the drum 24 to the tube 273,
- screwing the motor 28 to the motor mounting plate 291,
- installation of the 10 anti-fall safety device.

The installation of the fall protection safety device 10 includes the following steps:
- fitting the rod 103 into the tube 273,
- fixing the rod 103 on the axle of the wheel 104,
- fixing the support 101 on the bearing 292,
- screwing the attachment portion 105 of the rod 103 onto the tube 273.

The preliminary step of deactivating the door weight compensation mechanism 11 includes, for example, the following actions:
- unhooking and dismantling the spring(s) used to compensate for the weight of the door leaf 31,
- dismantling of the cables which connect the compensation system 11 to the door apron 31.

The step of dismantling the first batch of wall fixings 191, 192, 193 includes, for example, the following actions:
- unscrewing or unhooking from the wall 33 of the motor fixing plate 191, unscrewing or unhooking from the wall of the side bearing 192 and the intermediate bearing 193, dismantling of the fixings of the anti-fall devices 113 and 114,
- dismantling of the door weight compensation mechanism,

- cutting off the power supply to motor 18 and dismantling motor 18,

- separation of the first upper axis 17 and the first winding drums 14 from the wall 33,

- dismantling of any additional devices from the first subassembly 1 such as a fall arrest device.

The steps described below correspond to the assembly of the second replacement subassembly 2 of the door drive device 31.

Subassembly 2 before assembly is detailed in .

The step of cutting the tube 273 of the second upper axis 27 is carried out for example by means of a saw. The tube 273 before this step has a length greater than or equal to the length of the first upper axis 17. During this step, the tube 273 is cut to a length substantially identical to that of the first upper axis 17. The tube 273 can also be cut to a length corresponding to a transverse dimension of the door to within a constant. The tube 273 obtained at the end of this step is shown in .

In a case where the tube 273 already has the required dimensions, the step of cutting the tube 273 is not carried out.

There represents the drilling of holes for fixing the fall arrest safety device 10 to the tube 273 which can be carried out before the step of installing the fall arrest safety device 10. The fixing holes are drilled in the portion of the tube 273 on the side of the second end 272.

There represents:
- the fitting of the rod 103 into the tube 273 by the second end 272, and
- screwing the attachment portion 105 of the rod 103 onto the tube 273, the screws being inserted into the fixing holes made at the .

There represents the drilling of holes for fixing the motor 28 to the tube 273 which can be carried out before the step of fitting the second motor 28 into the tube 273. The fixing holes are drilled in the portion of the tube 273 on the side of the first end 271.

There represents:
- the fitting of the second motor 28 into the tube 273 by the first end, and
- screwing the interface portion 282 of the motor to the tube 273, the screws being inserted into the fixing holes made at the .

There represents:
- the fitting of the second winding drums 24 onto the tube 273,
- screwing the drums 24 to the tube 273. Before screwing, a drilling step can be used to provide holes for fixing the drums 24 in the tube 273.
In the example, the drums 24 have an internal diameter greater than the dimensions of the motor 28 in a plane comprising the longitudinal and vertical directions to allow the drums 24 to be fitted by the first end 271 of the tube 273; and/or the drums 24 have an internal diameter greater than the dimensions of the safety device 10 in a plane comprising the longitudinal and vertical directions to allow the drums 24 to be fitted by the second end 272 of the tube 273.

Alternatively, so that the dimensions of the second motor 28 are not an obstacle to the installation of the drums, the installation of the drums 24 is carried out before the fitting of the second motor 28. According to another variant, so that the dimensions of the safety device 10 are not an obstacle to the installation of the drums, the installation of the drums 24 is carried out before the fitting of the rod 103 into the tube 273.

There represents the fixing to the wall 33 of the motor fixing plate 291. The represents the fixing to the wall 33 of the bearing 292. The bearing 292 and the motor fixing plate 291 are positioned above and on either side of the bay 32. The bearing 292 and the motor fixing plate 291 are spaced apart by a length substantially equal to that of the tube 273.

There represents the installation of the tube 273 so that the second motor 28 is fixed on the plate 291. More particularly, the plate 291 is screwed to the housing of the motor 28 by 4 screws distributed around the periphery of the housing.

There represents the placement of the tube 273 such that the tube 273 is supported by the bearing 292 via the rod 103 of the safety device 10, the rod 103 protruding from the second end 272 of the tube. also represents:
- fixing the rod 103 on the axle of the wheel 104, and
- fixing the support 101 on the bearing 292.

Throughout the description, other methods of fixing may be envisaged without departing from the scope of the invention. For example, screwing operations may be replaced by gluing or welding operations.

The steps shown in Figures 8a to 8j could be carried out in a different order without departing from the scope of the invention.

There represents an optional step of reinforcing the fixing of the first end 51 of the cable 5 to the lower part of the door 31 comprising the installation of a cable fixing device 12 screwed to the door 31 by means of through screws 13. The cable fixing device 12 comprises a blade which is retracted during nominal operation and which is released in the event of breakage of a cable fixed to the fixing device 12, the released blade then comes to rest in a guide rail 6 in order to block the door and prevent it from falling.

Final steps allow the integration of the second subassembly 2 into the drive device. For example, the attachment of the cables 5 to their associated drums 24 allows the winding and unwinding of the cables by the second subassembly 2. In addition, the electrical connections of the motor 28 and the safety device 10 allow the actuation of these elements.

As demonstrated in the preceding description, the method of the invention makes it possible to replace a complex and expensive first subassembly 1 with a simpler, less expensive and quicker to manufacture second subassembly 2. The small number of parts makes it possible to limit storage costs.

The installation time of the second subassembly 2 is reduced compared to that of a conventional subassembly based on the model of subassembly 1. In particular, the installation of the second subassembly 2 can be carried out in 30 minutes and eliminates the need to tension the springs and fix the springs. In addition, the parts are easy to supply due to their simplicity, unlike those of existing devices. The standard nature of the subassembly eliminates the need for a prior visit to take measurements or perform a diagnosis, which saves time in resolving the fault.

The second subassembly is self-supporting thanks to the robustness of the tube 273 and makes it possible to dispense with torsion force recovery systems with springs. Indeed, the tube 273 is robust and has excellent resistance to torsion. It also makes it possible to prevent the safety device from rotating on the axis. According to a particular embodiment of the invention, the second axis is galvanized to give it better mechanical resistance.

The second subassembly 2 makes it possible to avoid welding, in particular thanks to the fitting of the parts and/or their screwing.

The second subassembly 2 is adaptable to any type of door and does not need to be resized; it is also compatible with a wide range of motorization powers and speeds; which allows for an economy of scale.

The safety of the drive device is enhanced because the reasons for failures are reduced, critical elements such as the motor and the safety device are more easily accessible and in the event of a motor failure or breakage of a load-bearing element, it is still possible to open the door thanks to a clutch chain allowing the motor to be driven manually when the electrical part is faulty.

The second subassembly 2 is space-saving and allows for better aesthetic integration into the bay.

Claims (10)

Method for replacing a first subassembly (1) with a second subassembly (2) of a drive device for a door (31), of the sectional type, actuated in closing or opening relative to a bay (32) provided in a wall (33),
the first subset (1) comprising:
- at least one first winding drum (14) allowing the winding and unwinding of at least one cable (5) so as to drive the door (31) in translation, in one direction or the other, in guide rails (6) comprising at least one vertical section, by means of rollers associated with the door (31), the cable (5) comprising a first end (51) fixed to a lower part of the door (31) and comprising a second end (52) fixed to the winding drum (14),
- a first upper axis (17) secured to the first winding drum (14), the first upper axis (17) being fixed above the bay (32),
- a first rotary drive motor (18) driving the first upper axis (17),
- a first set of wall fixings (191, 192, 193) ensuring the maintenance of the first upper axis (17) and the first motor (18) above the bay (32);
the second subset (2) comprising:
- a second upper axis (27) comprising a tube (273) having a polygonal section (274),
- at least one second winding drum (24) of internal section identical, apart from the mounting clearance, to the external section of the tube (273),
- a second motor (28) comprising a shaft (281) comprising an interface portion (282) of external section identical, apart from the mounting clearance, to the internal section of the tube (273),
- a second set of wall mounts (291, 292) comprising a bearing (292) and a plate (291) for mounting the motor;
the method being characterized in that it comprises the following steps:
- dismantling the first set of wall fixings (191, 192, 193) so as to separate the first drive motor (18), the first upper axle (17) and the first winding drum (14) from the wall (33),
- fitting the second motor (28) into the tube (273),
- fitting the second winding drum (24) onto the tube (273),
- fixing to the wall (33) the bearing (292) and the motor fixing plate (291) above and on either side of the bay (32), the bearing (292) and the motor fixing plate (291) being spaced apart by a length substantially equal to that of the tube (273),
- positioning the tube (273) so that the second motor (28) is fixed on the motor fixing plate (291) and the tube (292) is supported by the bearing (292). Method according to claim 1 characterized in that, the first subassembly (1) further comprising a compensation mechanism (11) for the weight of the door (31), the method comprises a preliminary step of deactivating the compensation mechanism (11) for the weight of the door, the step of dismantling the first batch of wall fixings making it possible to further dismantle the compensation mechanism for the weight of the door. Method according to any one of claims 1 to 2, characterized in that it further comprises a step of screwing the interface portion (282) of the motor to the tube (273). Method according to any one of claims 1 to 3, characterized in that it comprises a step of screwing the drum (24) to the tube (273). Method according to any one of claims 1 to 4, characterized in that it comprises a step of screwing the motor (28) to the motor fixing plate (291). Method according to any one of claims 1 to 5, characterized in that the second subassembly (2) further comprises an anti-fall safety device (10) comprising:
- a support (101),
- a wheel (102) mounted on the support (101),
- a rod (103) capable of being mounted freely in rotation along the axis (104) of the wheel, the rod (103) comprising a hooking portion (105) of external section identical, apart from the mounting clearance, to the internal section of the tube (273),
- a locking mechanism designed to block rotation of the rod (103) when the rotation speed of the rod (103) exceeds a threshold value;
the method further comprising the following steps:
- fitting the rod (103) into the tube (273),
- fixing the rod (103) on the wheel axle (104),
- fixing the support (101) on the bearing (292). Method according to any one of claims 1 to 6, characterized in that it comprises a step of screwing the attachment portion (105) of the rod (103) onto the tube (273). Replacement subassembly (2) of a drive device for a door (31), of the sectional type, actuated in closing or opening relative to a bay (32), the replacement subassembly (2) comprising:
- at least one winding drum (24) allowing the winding and unwinding of at least one cable (5) so as to drive the door (31) in translation, in one direction or the other, in guide rails (6) comprising at least one vertical section, by means of rollers associated with the door, the cable (5) comprising a first end (51) fixed to a lower part of the door (31) and comprising a second end (52) intended to be fixed on the winding drum (24),
- an upper shaft (27) secured to the winding drum (24), the upper shaft (27) being intended to be fixed above the bay (32) by a first and a second end (271, 272),
- a rotary drive motor (28) fixed to the first end (271) of the upper shaft (27),
- two lateral wall mounts (291, 292), one associated with the motor (28), and the other with a bearing (293) supporting the second end (272) of the upper axle (27),
characterized in that:
- the upper axis (27) is formed by a tube (273), the section (274) of the tube being of dimensions and polygonal shape determined according to the weight of the door (31) and its length, to give the tube (273) resistance to bending and twisting, allowing it to free itself from any other intermediate wall support,
- the internal section of the winding drum is identical, apart from the mounting clearance, to the external section of the tube (273) with which it is associated,
- the motor (28) comprises a shaft (281) comprising an interface portion (282) of external section identical, apart from the mounting clearance, to the internal section of the tube (273). Subassembly (2) for replacing a door drive device (31) according to claim 8, characterized in that it comprises two winding drums (24). Subassembly (2) for replacing a door drive device (31) according to any one of claims 8 to 9, characterized in that it further comprises an anti-fall safety device (10) comprising:
- a support (101),
- a wheel (102) mounted on the support (101),
- a rod (103) capable of being mounted freely in rotation along the axis (104) of the wheel, the rod (103) comprising a hooking portion (105) of external section identical, apart from the mounting clearance, to the internal section of the tube (273),
- a locking mechanism designed to block rotation of the rod (103) when the rotation speed of the rod (103) exceeds a threshold value.