FR3098210A1 - Elevator installation including an aluminum guide - Google Patents

Abstract

Elevator installation comprising an aluminum guide The invention relates to a profiled element (20) for a guide assembly of a car assembly and/or a counterweight assembly of an elevator installation, this profiled element extending longitudinally in a direction normal to the planes of the profile of said profiled element, in whichsaid profiled element is in one piece and is made of a material comprising at least 50% by mass of aluminium,said profiled element has a flat face (31) extending longitudinally, said profile defines:- at least one fixing means (27) to a wall section, so that the profiled element rests against this wall section by this flat face, and - at least a guide means (23, 24) extending longitudinally over the entire height of said profiled element, this at least one guide means being shaped for guiding in the longitudinal direction of at least one respective one of the cabin assembly and the whole cont reweight. Figure for abstract: Figure 3

Description

Elevator installation including aluminum guide

The invention relates to an elevator installation, comprising in particular a motor, a linear drive element driven by the motor, a cabin assembly and/or a counterweight assembly fixed to the linear drive element and to the less a fixed guide.

Conventionally, two fixed guides in the shape of a T are mounted on two sides of walls opposite each other, on either side of the cabin, therefore, so as to extend longitudinally vertically or substantially vertically (angular difference less than 15°). The cabin assembly comprises, in addition to the cabin, a stirrup forming a structure supporting the cabin and defining two sliders, called movable sliders because they are integral with the cabin, and each cooperating with a respective fixed guide so as to guide the displacements of the cabin. along the guides.

The fixed guides currently used are steel guides, T-shaped and delivered in bars of predefined length, typically 5 meters. They are used to guide the cabin and/or the counterweight, and in addition a parachute system can come to block against a fixed guide.

At each end of the guide, a tenon or, where applicable, a mortise enables the sections of the guide to be assembled without creating any discontinuity. In addition, the sections can be assembled by a bolted splice.

Each section defines holes in the base of the T (from which extends the branch cooperating with the mobile sliders) for fixing with screws or equivalent to a corresponding wall section. This section of wall must be strong enough to mechanically support at least part of the lift installation.

Depending on the environment, it is sometimes necessary to lean the lift installation against a single section of wall, in particular in the case of a lift to be installed in an already existing and sometimes old building and/or in the case a private lift ("homelift" in English). The other facades of the lift installation may be provided for cladding purposes and be non-load-bearing.

It is known to then fix the T-sections not directly to the wall but to folded sheet metal profiles, as illustrated in Figure 1.

Each profile 1 extends longitudinally, that is to say in FIG. 1 perpendicular to the plane of the sheet, and has a section, in the planes normal to the longitudinal direction, in the shape of a U. The fixed guides 2 in T-shape are fixed to the base of the U by welding, while one 3 of the branches of the U is mounted on a section of load-bearing wall, not shown. This branch 3 defines orifices for this purpose.

A cabin assembly, not shown, may comprise a movable slider forming a sliding connection with a branch 5 of the guide 2 forming a projection from the part 6 welded to the profile 1 of folded sheet metal. This mobile slide can be offset towards the load-bearing wall relative to the cabin, so that the profiles 1 are between the cabin and the load-bearing wall.

A set of counterweights 7 can be guided directly by the folded sheet profiles 1. This set can comprise, in addition to a counterweight 8, a structure 9 to which the counterweight 8 is fixed, for example by means of bolts 110, and comprising wheels 111. The structure 9 is designed so that each of the four wheels 111 is received in a respective corner of profile 1 and can be moved longitudinally, thus ensuring the guidance of the set of counterweights.

The U-shaped profiles 1 themselves have a predefined length of approximately 2.5 meters, and the various sections are assembled together. More precisely, two sections are assembled by bars forming spacers, so that the profiles are delivered in the form of pieces each comprising two sections of U-shaped profiles, T-shaped guide sections welded to the U-shaped profiles and bars forming a spacer. These pieces are then assembled together.

These pieces are relatively heavy, and there is a need for an easier-to-install elevator installation guide assembly. This need exists in the case of an elevator installation leaning against a single section of wall, but more generally in any type of installation, in particular installations leaning against two sections of wall facing each other.

A profiled element is proposed for a guide assembly of a cabin assembly and/or of a counterweight assembly of an elevator installation, this profiled element extending longitudinally in a direction normal to the planes of the profile of this profiled element, called height, having a flat face extending longitudinally, being in one piece, defining at least one means of fixing to the wall section, for example at least one orifice, so that the profiled element rests against this section of wall by this flat face, and said profiled element further defining at least one guide means, for example male or female, extending longitudinally over the entire height of the profiled element, this at least one means of guide being shaped for guiding in the longitudinal direction of at least one of the cabin assembly and the counterweight assembly. The profile is entirely made of a material comprising at least 50% by weight of aluminium, advantageously at least 80% by weight, advantageously at least 84% by weight, advantageously at least 90% by weight, for example between 95% and 100 % in weight. We can thus use pure aluminum or alternatively an aluminum alloy.

Thus, rather than welding a T-shaped steel guide to a U-shaped folded sheet, a single element is provided defining both the means for fixing to a wall and the longitudinal guide means. This element comprising aluminum can therefore be easier to obtain and lighter than the known pieces of the prior art, which can weigh nearly 100 kg for a length of 2.50 meters.

This profile element can also be lighter than conventional steel T-guides.

In addition to the flat face, the profiled element may comprise at least two other sides (continuous or not, in particular when they define male or female guide members), for example three other sides or more. The profiled element can for example have a section whose outer circumference has a rectangular, hexagonal or other appearance.

Advantageously, the profiled element can be a hollow profile.

The profiled element may comprise outer walls forming, in the plane normal to the longitudinal (high) direction, a closed perimeter, for example a perimeter of rectangular appearance.

Alternatively, a solid profile could be provided, for example a T, X or other profile, or even a semi-hollow profile.

Advantageously, the profiled element may also comprise at least one wall, for example an inner wall, forming a reinforcing rib.

This at least one wall can define, optionally with at least one other wall, at least one recess, thus making it possible to lighten the profiled element and to save material.

The invention can find an application in the case of lift installations leaning against a single section of wall, in particular in the case of private lifts, but it is in no way limited to these applications. It would be entirely possible to implement the invention in an installation leaning against several walls, the various guides of the installation then being fixed to separate sections of walls.

The means for fixing to the wall can be defined at the flat face, for example holes in the flat face, or close to the flat face. One could for example provide in a face adjacent to the flat face an orifice, a cavity or a groove, dedicated to fixing to the wall section.

The guide means can open towards from its bottom in the case of a female member, or extend projecting along, in the case of a male member, a direction normal to the flat face, in particular when the lift installation is intended to be leaned against several sections of wall.

Advantageously, the e guide means can open or extend, in a plane normal to the longitudinal direction, in a direction having at least one component parallel to the flat face,

In this case, the guide means opens or extends in a plane normal to the longitudinal direction in a direction having at least one component parallel to the flat face (or normal to the direction normal to the plane of this flat face) , for example a direction parallel or substantially parallel (angular difference of less than 15°) to the flat face.

In a plane normal to the longitudinal direction of the profiled element, the male or female member used for guiding then has walls extending laterally with respect to the direction normal to the plane of this flat face. The cooperation between a complementary guide means (for example a projection or a groove) of the cab or counterweight assembly therefore takes place laterally with respect to this direction normal to the plane of this flat face.

For example, the guide means can be defined in a face adjacent to or at least drawn up with respect to the flat face backing onto the section of wall.

For example, it is possible to install a set of counterweights (or even a cabin) between two profiled elements each backed by their flat face against the same wall section, in the same way as the counterweight is installed between two U-shaped sheets on Figure 1, each of these profiled elements defining a guide means extending towards or opening towards the other profiled element (and therefore towards the counterweight assembly).

The profiled element can for example comprise a guide means, for example a cavity extending longitudinally, for guiding the cabin, and be devoid of means for guiding the counterweight, in particular in an elevator installation devoid of counterweight.

Advantageously, said at least one guide means may comprise a first guide means shaped for guiding in the longitudinal direction of the cabin assembly and a second guide means shaped for guiding in the longitudinal direction of the counterweight assembly. .

Thus the one-piece profiled element can be used to guide both the car and the counterweight, thus making it possible to reduce the positioning adjustments during installation.

The first and second guide means can for example be defined on the same face of the profiled element, for example on a face facing another profiled element.

When this face facing the other profiled element is raised (forms an angle) with respect to the flat face leaning against the section of the wall, this nevertheless implies that the profiled element extends from the flat surface in planar contact with the section of wall over a certain thickness.

When this face facing the other profiled element is opposite (and parallel or parallel in appearance) to the flat face, this profiled element can be used in an elevator installation leaning against two faces of walls one of the other. It is interesting compared to the T guides of the prior art, in particular because of the reduction in the number of positioning adjustments to be made.

The first and second guide means can advantageously be opposite each other, on either side of a straight line normal to the flat face, thus making it possible to limit the overhang relative to the fixing on the side of the wall.

Two profiled elements can advantageously be provided, shaped so that they can each be backed by their flat face against the same wall section and to define on their faces facing each other the second guide means, so that the counterweight can be accommodated between these two profiled elements. The first guide means open or extend outwards, and a cabin assembly may be provided comprising complementary guide means offset from the cabin.

The second guide means may for example be a female member, for example a groove, for example open to its walls. Indeed, the counterweight can be relatively compact and entirely between the two profiled elements, thus limiting the forces in the direction normal to the flat face. Since the forces exerted on the profiled elements are thus relatively limited, a relatively simple shape can be adopted.

The elevator installation may comprise a set of counterweights comprising complementary guide means, for example of the projection type when the second guide means is a female element, for example a simple shoe shaped to be able to be received in the groove of the lift. profiled element.

Advantageously, the first guide means can be a female member, of the groove type.

This female member may for example comprise a cavity, for example with edges partially covering the opening of the cavity.

The male member of the cabin assembly can advantageously extend, in the direction normal to the flat face, over a thickness less than the cavity, and advantageously over a thickness less than that of the opening of the cavity, allowing thus to replace this organ even relatively easily.

The complementary male element of the cabin assembly can for example comprise a rolling roller, which can facilitate the longitudinal displacements of the cabin despite any forces exerted in the direction normal to the plane of the flat face, a pad, or other .

The profiled element can also define a means of securing to a spacer element. Thus, two profiled elements can be joined together via one or more spacer element(s), making it possible to reinforce the structure of the guide assembly and to improve the precision in terms of distance between the guide elements.

In an advantageous embodiment, the profiled element can be obtained by extrusion.

In an advantageous embodiment, the profiled element can comprise metal, for example be made of a material comprising between 95% and 100% by weight of metal.

The profiled element can be made of aluminum or an aluminum alloy, for example an aluminum alloy comprising zinc, manganese, magnesium, iron, copper, silicon, chromium, nickel, gallium, titanium and/or other.

The manganese can for example be present by weight between 0% and 10%, for example between 0.01% and 6%.

The zinc may for example be present by weight between 0% and 10%, for example between 0.1% and 0.6% or even between 0.6% and 6%.

Magnesium can for example be present by weight between 0% and 10%, for example between 0.01% and 6%.

The iron can for example be present by weight between 0% and 2%, for example between 0.1% and 1%.

The silicon can for example be present by weight between 0% and 3%, for example between 0% and 2%.

The chromium can for example be present by weight between 0% and 1%, for example between 0% and 0.6%.

The copper can for example be present by weight between 0% and 1%, for example between 0% and 0.6%.

The nickel can for example be present by weight between 0% and 1%, for example between 0% and 0.6%.

The gallium can for example be present by weight between 0% and 1%, for example between 0% and 0.6%.

The titanium can for example be present by weight between 0% and 1%, for example between 0% and 0.2%.

For example, one of the following alloys may be used: 5083 H22, 5086 H24, 5754 H24, 6005A T5, 6061 T6, 6082 T6 or even 7020 T5.

The profiled element can thus comprise for example between 84% and 100% aluminium.

The profiled element can thus be considerably lighter than the guidance systems of the prior art. The Applicant thus produced a piece 3 meters long, with two profiled elements and spacer elements, weighing approximately 40 kg. It will be understood that these pieces are easier to handle than those of the prior art, which weigh approximately 100 kg for 2.50 meters.

The fixing means or means can be arranged for direct fixing to the wall section, for example an orifice to receive a screw, or alternatively for fixing via an attached intermediate piece.

The guide assembly can then further comprise a fixing element cooperating on the one hand with at least one respective fixing means of a corresponding profiled element and on the other hand with the wall section.

This attached fastening element can advantageously also define a flat surface, intended to be leaned against the wall section.

The use of attached fixing elements can facilitate any adjustments, particularly in the case of non-flat sections of wall and/or with surface irregularities.

Advantageously and without limitation, the profiled element can also define at least one centering means relative to an adjacent profiled element, said profiled elements being in contact by their longitudinal ends, for example a tenon or a mortise at the end longitudinal of the profiled element, or even an orifice to receive a rod or a centering pin, for example an expansion pin.

Advantageously and without limitation, the profiled element can also define at least one cavity to receive at least one peripheral element, for example a user manual, or else an electrical element, for example, a wire, a sensor, processing means of the processor type, etc. In other words, we come to take advantage of the profiled element to make it a support for peripheral element(s).

There is also proposed a guide assembly for a car assembly and/or a counterweight assembly of an elevator installation leaning against a single wall section or several wall sections, this guide assembly comprising two profiled elements as described above, and at least one spacer element secured by its two ends to the two respective profiled elements.

This guide assembly can be delivered in pieces, or not.

A piece can have a predefined height (in the longitudinal direction), for example 2 or 3 meters.

Alternatively, a single-piece guide assembly could be provided incorporating two guide elements and a spacer element, which guarantees greater precision as to the distance between the guide elements. It nevertheless remains advantageous to attach separate spacer elements of the guide elements to these guide elements, because the spacer elements can have a lower height (in the longitudinal direction), for example a few centimeters, which allows lighten the guide assembly, and further adjust the distance between guide elements.

It is also proposed an elevator installation including:

- a guide assembly as described above,

- a cabin assembly comprising a cabin and at least one guide means, secured to said cabin and capable of cooperating with at least one guide means for a profiled element of the guide assembly.

This at least one cabin assembly guide means may for example comprise at least one male guide member, for example a shoe, preferably at least 10 centimeters high, or else a roller mounted rotatably relative to the rest of the cabin assembly. The movements of the cabin assembly can thus be facilitated even if this assembly exerts forces on the guide means of the profiled element, for example a female member receiving the male guide member, for example a cavity or the like.

Advantageously, the cabin assembly may comprise at least two male guide members (for example two rollers mounted rotatably relative to the rest of the cabin assembly) each mounted at a different height, said at least two male guide members being received in the same female organ, and the lowest male organ being more offset towards the plane face than the highest male organ. Thus, if the female organ opens laterally, i.e. defines two opposite walls having components parallel to the plane of the plane face, and the barycenter of the cabin is farther from this plane face than the barycenter of all of the cabin assembly guide means, the highest male member will exert forces on the wall of the female member furthest from the flat face, while the lowest male member will exert forces forces on the wall closest to the plane face. The sum of these forces can thus be less than if the two male members exerted forces on the same wall, thus limiting the cantilever.

The elevator installation may further comprise a motor and a linear drive element driven by the motor, the car assembly being suspended from said linear drive element, for example a belt or a cable.

The elevator installation may further comprise a set of counterweights comprising a counterweight.

Advantageously, this set of counterweights can further comprise at least one guide means, secured to the counterweight and capable of cooperating with at least one guide means for a profiled element of the guide set.

In one embodiment, the two flat faces of two profiled elements are substantially in the same plane in order to rest on the same section of wall.

Alternatively, different angles and/or planes could be provided (possibly parallel to each other), so that the lift installation is leaned against several sections of wall.

In one embodiment, the elevator installation may further comprise a cable extending along the travel of the car.

A cabin blocking device, equivalent to a parachute, can be configured for blocking on this cable.

Alternatively, one can provide a parachute device and a profiled element shaped so that the parachute device can lock onto the profile. For example, the profile can define a projection extending along the profile element and extending laterally with respect to the direction normal to the planar face.

The invention is now described with reference to the accompanying, non-limiting drawings, in which:

[FIG 1] already commented on, represents a sectional view of a guide assembly of the type known from the prior art, for an installation leaning against a single section of wall.

[FIG 2] shows a cross-section and top view of an example of an elevator installation according to one embodiment of the invention.

[FIG 3] shows a sectional view of an example of a profiled element according to one embodiment of the invention.

[FIG 4] shows a sectional view of another example of a profiled element according to one embodiment of the invention.

In the embodiments of Figures 2 to 4, the lift installation is leaned against a single section of wall.

Referring to Figure 2, an elevator installation 11 is leaned against a single wall section 10.

This installation comprises a cabin 12 and a counterweight 13 secured to linear elements, of the cable or belt type, not shown, and driven in motion by a motor, not shown.

The cabin 12 is supported by a structure comprising a support plate 14 under the cabin, a metal plate 15, referred to as an arch, erected relative to the support plate 14 and secured to the cabin 12, and two offset elements 16, 17, fixed to archway 15 and extending from archway 15 to wall section 10.

These offset elements 16, 17 may have a height, in the longitudinal direction, normal to the plane of the sheet, of a few tens of centimeters.

These offset elements 16, 17 can for example be obtained by bending sheet(s), or even by extrusion.

On an offset element 16, 17 are rotatably mounted two rollers 18, 118, 19, 119.

These rollers 18, 118, 19, 119 constitute male cabin guide members, cooperating with respective female members defined in two respective profiled elements 20, 21.

More specifically, the installation 11 comprises a guide assembly comprising these two profiled elements 20, 21 and spacer elements in the general shape of a strip, one of which 22 is shown in Figure 2.

Figure 3 shows in more detail the section of the profile referenced 20 in Figure 2.

This profile defines:

- a cavity 23 intended to receive the rollers referenced 18, 118 in Figure 2,

- a groove 24 intended to receive a pad referenced 25 in Figure 2, integral with the counterweight 13,

- a cavity 27 for receiving a threaded rod and a nut (or a threaded plate), referenced 26 in Figure 2, for attachment to an insert insert 28,

- a cavity 29 for receiving a threaded rod and a nut (or a threaded plate), referenced 30 in Figure 2, for attachment to the spacer element referenced 22 in Figure 2,

- a flat face 31, intended to rest in planar contact on the wall section 10,

- a cavity 32, here opposite the flat face, to receive at least one electrical element not shown, for example, a wire, a sensor, or other,

- two centering orifices 33, 34, each intended to receive a portion of a pin, not shown, to facilitate the positioning of a profiled element section 20 to another identical section when these sections are assembled on top of each other

It may be noted that this profiled element comprises many recessed parts 23, 24, 27, 29, 32, 33, 34, 35-38, so that it is relatively light. The possibility of obtaining complex profiles with aluminum alloys makes it possible to compensate for the relatively low elastic modulus of the metal by a shape of the profiles which leads to a high moment of inertia.

The profile is hollow.

It may also be noted that the section of the profile is shaped so that it comprises parts 40-67, generally straight or arc-of-circle, and most of which have an identical thickness, of the order of one centimeter .

These different parts 40-67, and in fact the entire profiled element, are made of aluminum alloy.

The parts 40, 41, 43, 44, 45, 42, 49, 50, 52, 53, 54, 55, 57, 61, 62, 63, 64, 66, 65, 67, 60, 59, 56 and 48 form in the plane of the sheet a closed outer circumference.

The inner walls 46, 47 and 51 serve as reinforcing ribs.

To return to the cavity 23, it may be noted that its thickness, along the direction normal to the plane of the flat surface 31, represented by the straight line (D), is greater than that of the rollers 18, 118 (which have identical dimensions ). The thickness of the opening 72 is also greater than that of these rollers, thus allowing easier replacements.

To return to Figure 2, the lowest roller 118 is mounted more offset, relative to the cabin 12, than the roller 18, that is to say closer to the flat face 31 and the wall section 10 Indeed, the barycenter of the rollers 18, 118, 19, 119 being offset with respect to the barycenter of the cabin assembly, one can expect a tilting linked to the torque: the offset of the roller 118 with respect to the roller 18 can prevent the cab from tilting.

In addition, the roller 18 exerts forces on the wall 48 (FIG. 3), while the roller 118 exerts forces on the wall 60, thus limiting the cantilever.

The parts 40 and 59 partially cover the opening 68, allowing the roller to be retained when resting against one of the walls 48 or 60 of the cavity 23.

The open groove 24 is sized to receive, with functional clearance, the slider 25 integral with the counterweight 13.

As regards the attachment to the wall section referenced 10 in Figure 2, this involves an intermediate piece 28 also having a flat surface 70 intended to bear against the wall section 10.

A threaded rod and two bolts 26, 71 make it possible to fix this intermediate piece 28 relative to the profiled element 20.

The intermediate piece 28 is also secured, for example by screws not shown, to the wall 10.

Symmetrically, an intermediate piece 28' makes it possible to fix the profiled element 21 to the wall 10.

These parts 28, 28 and these profiled elements 20, 21 have flat surfaces 31, 70, intended to bear against the wall 10.

The use of intermediate pieces 28, 28' can make it possible to compensate for any accidents in the flatness of the wall 10.

The cavity 29 participates in securing the profiled element 20 to the spacer element 22, via a threaded rod and bolts 30, 72. The other end of the spacer element 22 is fixed symmetrically to the profiled element 21.

Several fixings of each profiled element 20, 21 to one or more spacer element(s) will advantageously be provided, in order to stiffen the guide assembly.

In the variant of Figure 4, the profiled element 20' is still made of aluminum alloy, by extrusion, and defines a flat face and numerous recesses 23', 24', 27', 35', 33', 29', 36', 34', 37', including:

- a 23' cavity intended to receive two elevator car guide rollers,

- a 24' groove intended to receive a counterweight guide shoe,

- a 27' cavity for receiving a threaded rod and a nut, for fixing to an intermediate insert which is itself mounted on a wall,

- a cavity 29 'for receiving a threaded rod and a nut, for fixing to a spacer element between this profiled element 20' and a profiled element not shown and which has a symmetrical profile (capable of being obtained by symmetry axial) relative to the profile of the element 20',

- a cavity 32', for example opposite the flat face 31', to receive at least one electrical element not shown, for example, a wire, a sensor, or other,

- two centering orifices 33', 34', at least partly circular, each intended to receive an expansion pin not shown to facilitate the positioning of a section of profiled element 20' to another identical section.

The flat face 31' is intended to rest in planar contact on a section of wall.

This 20' profile can also be used in an installation leaning against a single section of wall.

Claims (10)

Profiled element (20) for a guide assembly of a cabin assembly and/or of a counterweight assembly of an elevator installation, this profiled element extending longitudinally in a direction normal to the planes of the profile of said element profile, in which
said profiled element is in one piece and is made entirely of a material comprising at least 50% by mass of aluminium,
said profiled element has a planar face (31) extending longitudinally, and
said profile defines:
- at least one fixing means (27) to a wall section, so that the profiled element rests against this wall section by this flat face, and
- at least one guide means (23, 24) extending longitudinally over the entire height of said profiled element, this at least one guide means being shaped for guiding in the longitudinal direction of at least one respective one of the set cab and the counterweight assembly. Profile element (20, 21; 20') according to claim 1, in which
said at least one guide means defined by said profiled element (20, 21; 20') comprises a first guide means (23; 23') shaped for the guide in the longitudinal direction of the cab assembly and a second means guide (24; 24') shaped for guiding in the longitudinal direction of the counterweight assembly. Profile element (20, 21; 20') according to any one of Claims 1 to 2, in which
the profiled element (20, 21; 20') further defines a means of securing (29; 29') to a spacer element (22). Profile element (20, 21; 20') according to any one of Claims 1 to 3, in which
the profiled element (20, 21; 20') further defines a centering means (33, 34; 33', 34') relative to an adjacent profiled element, said profiled elements being in contact by their longitudinal ends. Profile element (20, 21; 20') according to any of claims 1 to 4, wherein said profile element is a hollow profile. Elevator installation (11) comprising
a guide assembly comprising two profiled elements (20, 21) according to any one of claims 1 to 5, and
at least one spacer element (22) secured by its two ends to the two respective profiled elements.
And
a cabin assembly comprising a cabin (12) and at least one guide means (18, 118, 19, 119), secured to said cabin and capable of cooperating with at least one guide means (23) of a profiled element (20, 21) of the guide assembly. Elevator installation according to Claim 6, in which the said at least one car assembly guide means comprises at least one male guide member (18, 118, 19, 119), and
said at least one guide means comprises a female guide member (23; 23') to receive the male guide means (18, 18). Lift installation according to Claim 7, in which
the car assembly comprises at least two male guide members (18, 118, 19, 119) rotatably mounted relative to the rest of the car assembly, each mounted at a different height, said at least two male guide members being received in the same female member, and the lowest male guide member being offset further towards the flat face (31) than the highest male guide member. Lift installation according to any one of Claims 6 to 8, in which the two flat faces (31) of two profiled elements are substantially in the same plane in order to rest on the same section of wall. Lift installation according to any one of claims 6 to 9, further comprising a cable extending along the travel of the car, and a blocking device shaped to block the car on said cable.