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 for replacing a sub-assembly 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, actuated in closing or opening in relation to a bay.

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

Technical background

A door drive device makes it possible to operate a sectional type door such as a garage door when closing or opening.

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 via rolling 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 attached to a lower part of the door and a second end attached to a winding drum. Thus, the drive device comprises two winding drums allowing the winding and unwinding of their respective cables so as to drive the door. The two drums are attached to the two opposite ends of an upper axle placed above the door. A motor rotates the upper axis to wind or unwind the cables on their respective drums.

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, sufficient in number to avoid bending of the shaft,
- a device for compensating the weight of the door comprising one or more compensation springs, in connection with 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 material costs and labor costs. Indeed, the cost of the material is high due to 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 install 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 of replacing a first sub-assembly with a second sub-assembly of a device for driving a door, of the sectional type, actuated in closing or opening in relation to a bay provided in a wall,
the first subset comprising:
- at least a 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 section vertical, via rolling rollers associated with the door, the cable having a first end fixed to a lower part of the door and having 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 set 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 shaped section,
- at least a second winding drum of identical internal section, except for mounting clearance, to the external section of the tube,
- a second motor comprising a shaft comprising an interfacing portion of external section identical, except for mounting clearance, to the internal section of the tube,
- a second set of wall fixings comprising a bearing and a motor fixing plate;
the process being characterized in that it comprises the following steps:
- dismantling the first batch of wall fixings so as to separate the first drive motor, the first upper axis and the first winding drum from the wall,
- nesting of the second motor in the tube,
- fitting of the second winding drum onto the tube,
- fixing the bearing and the motor fixing plate to the wall above and on either side of the bay, the bearing and the motor fixing plate being spaced a length substantially equal to that of the tube,
- positioning the tube so that the second motor is fixed on 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 mechanism for compensating the weight of the door, the method comprises a preliminary step of deactivating the mechanism for compensating the weight of the door, the step of dismantling the first batch of wall fixings making it possible to additionally 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 interfacing portion of the motor to the tube,

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

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

- the second subassembly further comprises a fall prevention safety device comprising:
a support,
a wheel mounted on the support,
a rod capable of being mounted freely in rotation along the axis of the wheel, the rod comprising a hooking portion of external section identical, except for mounting clearance, to the internal section of the tube,
a blocking mechanism configured to block rotation of the rod when the rotation speed of the rod exceeds a threshold value;

the process further comprising the following steps:
nesting of the rod in the tube,
fixing the rod on the wheel axle,
fixing the support on the bearing;

- the process includes a step of screwing the hooking portion of the rod onto the tube.

The invention also relates to a replacement sub-assembly of a drive device for a door, of the sectional type, actuated in closing or opening relative to a bay, the replacement sub-assembly 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 , via rolling 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 on the winding drum,
- an upper axis secured to the winding drum, the upper axis 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 axis,
- two side wall fixings, one associated with the motor, and the other with a bearing supporting the second end of the upper axis,
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 torsion, making it allowing you to do without any other intermediate wall support,
- the internal section of the winding drum is identical, except for mounting clearance, to the external section of the tube with which it is associated,
- the motor comprises a shaft comprising an interfacing portion of external section identical, except for mounting clearance, to the internal section of the tube.

According to other characteristics of the invention:

- the subassembly includes two winding drums;

- the subassembly further comprises a fall prevention safety device comprising:
a support,
a wheel mounted on the support,
a rod capable of being mounted freely in rotation along the axis of the wheel, the rod comprising a hooking portion of external section identical, except for mounting clearance, to the internal section of the tube,
a blocking mechanism designed to block rotation of the rod when the speed of rotation of the rod exceeds a threshold value.

This is how, according to the invention, the replacement time for 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 makes it possible to reduce the risk of injury linked to the use of a tension bar when tensioning springs since the upper axis in the invention does not include a spring for absorbing torsional forces. In addition, since the replacement process is simple and less dangerous, it is not necessary to call on a qualified person to implement it unlike the replacement processes of the prior art.

Brief description of the figures

Other characteristics and advantages of the invention will appear during reading of the detailed description which follows, for the understanding of which we will refer 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-hand view of the device according to ;

is an enlarged scale view of the device, according to the top view of the , with part of its components exploded;

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

is a perspective view, on an enlarged scale, of detail B according to , showing the bearing 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 dismantling step;

is a perspective view of the subset of the in a third dismantling step;

is a perspective view of the subset of the in a fourth dismantling step;

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 step;

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

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

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 step;

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 step;

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

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

is a perspective view of a drive device during a step of reinforcing the fixing 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, we will adopt on a non-limiting basis and without limiting reference to terrestrial gravity the vertical, longitudinal and transverse orientations according to the reference V, L, T indicated in the figures whose longitudinal axes L and transverse T extend in a horizontal plane. By convention, the vertical axis is oriented from bottom to top, the longitudinal axis L is oriented from back to front and the transverse axis T is oriented from right to left.

In the description which follows, identical, similar or analogous elements will be designated by the same reference numerals.

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

Thus, the method of the invention achieves 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 to close or open relative to a bay 32 provided in a wall 33. The device could be considered 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 Figures 1 to 5, the device comprises two cables 5 including a left cable having a first end 51 fixed to a lower left part of the door 31 and a right cable having a first end 51 fixed to a lower right part from door 31.

The drive device comprises two guide rails 6 including 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 connection portion forming a connection fillet between the vertical section and the horizontal section.

The door 31 has one or more rolling rollers on its left edge arranged to roll in the left rail 6 as well as one or more rolling rollers on its right edge arranged to roll in the right rail 6. The combination of rollers and 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 cable 5 right. Each cable 5 has 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 axis 17 and the first right winding drum 14 is fixed on a right end of the first upper axis 17. The first upper axis 17 is fixed above from bay 32.

The first rotary drive motor 18 is fixed to a right end of the first upper axis 17 so as to drive the first upper axis 17 in rotation.

The first batch of wall fixings 191, 192, 193 comprises a motor fixing plate 191, a lateral 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. Plate 191 is screwed to motor housing 18.

By way of example and optionally, the first subset 1 represented in 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 in the center of the first upper axis 17 via wall fixings forming part of the first set 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 has a first end fixed to an element of the fall arrest device 113 comprising a safety pin 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 pin is released and the lug is housed in a notch of a toothed wheel of the fall prevention 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 prevention device 114 is similar to that which has been described for the spring 111 and the fall prevention 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 wall fixings 291, 292 side.

In the description which follows, the elements of the second replacement subassembly 2 are designated indifferently by:
- second winding drum 24 or winding drum 24,
- second upper axis 27 or upper axis 27,
- second motor 28 or motor 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 has a second end 52 fixed on 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 the twist, allowing it to free itself from any other intermediate wall support.

The tests demonstrated that a cylindrical tube with a diameter of approximately 100 mm gave 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 tube 273 is octagonal. Of course, it could be of any other form.

As clearly visible in Figures 4 and 5, the internal section of the winding drums 24 is identical, except for mounting 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 nested, are united 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 axis 27 by interlocking. More particularly, the motor 28 comprises a shaft 281 comprising an interfacing portion 282 of identical external section, except for mounting clearance, to the internal section of the tube 273. In this way, the tube 273 and the motor 28, once nested, are united in rotation in a particularly effective manner. The sliding immobilization of one relative to the other is achieved by screwing the interfacing portion 282 of the motor to the tube 273 by means of screws.

The two side wall mountings 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 clearly shown in 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 includes:
- 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 blocking 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, except for mounting clearance, to the internal section of the tube 273. In this way, the tube 273 and the anti-fall safety device 10, once fitted together, are integral rotating in a particularly efficient 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 process includes 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,
- nesting of the second motor 28 in the tube 273,
- fitting of the second winding drum 24 onto the tube 273,
- fixing to the wall 33 of the bearing 292 and the plate 291,
- installation of tube 273.

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

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

The installation of the fall prevention safety device 10 comprises the following steps:
- nesting of the rod 103 in the tube 273,
- fixing the rod 103 on the axle of the wheel 104,
- fixing the support 101 on the bearing 292,
- screwing the hooking portion 105 of the rod 103 onto the tube 273.

The preliminary step of deactivating the compensation mechanism 11 for the weight of the door comprises for example the following actions:
- unhooking and dismantling the spring(s) which serve to compensate for the weight of the door leaf 31,
- dismantling of the cables which connect the compensation system 11 to the door leaf 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 mounting plate 191, unscrewing or unhooking from the wall of the lateral bearing 192 and the intermediate bearing 193, dismantling of the fixings of the fall arrest devices 113 and 114,
- dismantling the door weight compensation mechanism,

- cutoff of the electrical power supply to motor 18 and dismantling of motor 18,

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

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

The steps which are described in the following correspond to the assembly of the second subassembly 2 for replacing 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 a constant. The tube 273 obtained at the end of this step is represented 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 prevention safety device 10 to the tube 273 which can be carried out before the step of installing the fall prevention safety device 10. The fixing holes are drilled in the portion of the tube 273 on the side of the second end 272.

There represented :
- the nesting of the rod 103 in the tube 273 via the second end 272, and
- screwing the hooking portion 105 of the rod 103 onto the tube 273, the screws being introduced 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 nesting the second motor 28 in the tube 273. The fixing holes are drilled in the portion of the tube 273 on the side of the first end 271.

There represented :
- the nesting of the second motor 28 in the tube 273 via the first end, and
- screwing the interfacing portion 282 of the motor to the tube 273, the screws being introduced into the fixing holes made at the .

There represented :
- the nesting of the second winding drums 24 on the tube 273,
- screwing the drum 24 to the tube 273. Before screwing, a drilling step can make it possible 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 including 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 together 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 nesting 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 nesting of the rod 103 in the tube 273.

There represents the fixing to the wall 33 of the motor fixing plate 291. There 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 at a length substantially equal to that of 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 installation of the tube 273 so 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. There 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 can be considered without departing from the scope of the invention. For example, screwing operations can be replaced by gluing or welding operations.

The steps represented 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 fixing device 12 of the cable 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 crashes into a rail. guide 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 fixing 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 first complex and expensive subassembly 1 with a second subassembly 2 that is simpler, less expensive and quick to manufacture. The low number of parts helps limit storage costs.

The installation time of the second sub-assembly 2 is reduced compared to that of a classic sub-assembly on the model of sub-assembly 1. In particular, the installation of the second sub-assembly 2 can be carried out in 30 minutes and eliminates the need for tensioning the springs and fixing the springs. In addition, the supply of parts is easy due to their simplicity, unlike those of existing devices. The standard nature of the subassembly makes it possible to do without a prior visit to take dimensions or to diagnose, which saves time in resolving the fault.

The second sub-assembly is self-supporting thanks to the robustness of the tube 273 and makes it possible to do without systems for taking up the torsional force with springs. Indeed, the 273 tube is robust and has excellent resistance to torsion. It also prevents 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 eliminates the need for welding, in particular thanks to the interlocking 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 engine powers and speeds; which allows for an economy of scale.

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

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

Claims (10)

Method for replacing a first sub-assembly (1) with a second sub-assembly (2) of a drive device for a door (31), of the sectional type, actuated in closing or opening relative to a bay (32) formed in a wall (33),
the first sub-assembly (1) comprising:
- at least a 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, via rolling 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 on 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 sub-assembly (2) comprising:
- a second upper axis (27) comprising a tube (273) having a section (274) of polygonal shape,
- at least a second winding drum (24) of identical internal section, except for mounting clearance, to the external section of the tube (273),
- a second motor (28) comprising a shaft (281) comprising an interfacing portion (282) of identical external section, except for mounting clearance, to the internal section of the tube (273),
- a second set of wall fixings (291, 292) comprising a bearing (292) and a motor fixing plate (291);
the process 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 axis (17) and the first winding drum (14) from the wall (33),
- nesting of the second motor (28) in the tube (273),
- nesting of the second winding drum (24) on the tube (273),
- fixing to the wall (33) 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 at 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 deactivation of the compensation mechanism ( 11) of the weight of the door, the step of dismantling the first batch of wall fixings also allows the door weight compensation mechanism to be dismantled. Method according to any one of claims 1 to 2 characterized in that it further comprises a step of screwing the interfacing 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 a fall prevention 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 identical external section, except for mounting clearance, the internal section of the tube (273),
- a blocking mechanism designed to block the rotation of the rod (103) when the rotation speed of the rod (103) exceeds a threshold value;
the process further comprising the following steps:
- nesting of the rod (103) in the tube (273),
- fixing the rod (103) on the axle of the wheel (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 hooking portion (105) of the rod (103) onto the tube (273). Sub-assembly (2) for replacing a drive device for a door (31), of the sectional type, actuated in closing or opening relative to a bay (32), the sub-assembly (2) of replacement 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, via rolling 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 axis (27) secured to the winding drum (24), the upper axis (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 axis (27),
- two lateral wall fixings (291, 292), one associated with the motor (28), and the other with a bearing (293) supporting the second end (272) of the upper axis (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 torsion, allowing it to free itself from any other intermediate wall support,
- the internal section of the winding drum is identical, except for mounting clearance, to the external section of the tube (273) with which it is associated,
- the motor (28) comprises a shaft (281) comprising an interfacing portion (282) of identical external section, except for 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 a fall prevention 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 identical external section, except for mounting clearance, the internal section of the tube (273),
- a blocking mechanism designed to block the rotation of the rod (103) when the rotation speed of the rod (103) exceeds a threshold value.