ES2945684T3 - Public transport vehicle with simplified equipment maintenance - Google Patents

Abstract

The vehicle (10) comprises a structural body (12) comprising a housing (16) for an equipment box (18) movable in an extraction direction (Y) between a stowed position and an unfolded position. The casing (16) has a lower guide surface (22) extending in the removal direction (Y), and the equipment case (18) has a guide member (24) that rests on the lower guide surface (22). . The casing (16) has at least one upper bearing surface (26), the equipment housing (18) having bearing means (28) arranged below the upper bearing surface (26) in the vertical direction. The stop means (28) can cooperate at least in part with the upper stop surface (26), at least when the equipment case (18) is in the deployed position. (Automatic translation with Google Translate, without legal value)

Description

DESCRIPTION

Public transport vehicle with simplified equipment maintenance

The present invention relates to a public transport vehicle, specifically a railway vehicle, comprising a structural body provided with an equipment casing, and a housing for the equipment casing subjected to maintenance operations. The equipment housing is, for example, a heating, ventilation and air conditioning unit (so-called "HVAC" unit, an acronym for "Heat, Ventilation and Air Conditioning").

The housing is generally accessible from the exterior of the vehicle, the equipment case being partially removable from the housing by sliding it into a deployed position. This removal of the equipment casing allows easy access to it to carry out maintenance operations on it.

Such housings are known from KR 10-2093106 B1, US-2011/234070 A1, US-2004/143961 A1 and EP 3100928 B1.

An equipment casing of this type generally needs to extend a distance of more than half its length in the removal direction, namely over 55% of its length. As a result, the center of gravity of this equipment case is outside the housing during maintenance.

However, the mass of the equipment casing is very high (a heating, ventilation and air conditioning unit generally has a mass of approximately 1 ton), so that there is a risk that the equipment casing tilts under the effect of the gravity, which can lead to damage.

The object of the invention in particular is to remedy this drawback by preventing such tipping of the equipment casing.

To this end, the invention specifically has as its object a public transport vehicle, specifically a railway vehicle, comprising a structural bodywork, the structural bodywork comprising an equipment casing and a housing for an equipment casing, the equipment casing being movable in a removal direction, between a stowed position in the housing and a deployed position, in which at least 50% of the length of the equipment housing in the removal direction is outside the housing, where:

- the housing comprises at least one lower guide surface, which extends in the removal direction, and the equipment housing comprises at least one guide element, which rests on the lower guide surface, and

- the housing comprises at least one upper stop surface, the equipment casing comprising stop means arranged below the upper stop surface in a vertical direction, the stop means being capable of co-acting, at least partially, with the top stop surface, at least when the equipment case is in the unfolded position,

characterized in that the housing extends in the extraction direction, between a first and a second end, the housing being accessible from its two ends in the extraction direction, the equipment casing being able to move, in a first direction, between the retracted position and a first deployed position beyond the first end, and in a second direction, between the stowed position and a second deployed position beyond the second end.

In the deployed position, the stop means abut against the upper stop surface, preventing any tilting movement of the equipment casing.

A public transport vehicle according to the invention may also comprise one or more of the following characteristics, taken alone or according to any technically contemplated combination.

- The housing comprises at least one rail with a C-shaped cross section, comprising an upper part that carries the upper stop surface, a lower part that carries the lower rolling surface, the stop means being formed by the at least a guide element, arranged to circulate in the rail between the upper part and the lower part.

- The equipment casing comprises at least two guide elements, arranged in such a way that, in the deployed position, one of these guide elements co-acts with the upper stop surface, and the other of those guide elements co-acts with the lower bearing surface.

- The C-shaped cross-section rail comprises a first rail part, which carries the lower rolling surface, and a second rail part, different from the first rail part and connected to this first rail part, which carries the surface. top stop.

- The first rail part has a greater length, in the extraction direction, than the length of the second rail part, in this same extraction direction.

- The second rail part is arranged in a central area of the housing.

The upper stop surface is arranged above the equipment casing, the stop means comprising at least one auxiliary guide element, which acts together with the upper stop surface, at least in the deployed position.

- The upper stop surface is arranged on an upper rail fixed in the housing.

- The equipment housing is a heating, ventilation and air conditioning unit.

Different aspects and advantages of the invention will emerge from reading the following description, provided solely as a non-limiting example and carried out with reference to the attached figures, in which:

- [Figure 1] Figure 1 is a cross-sectional view of a public transport vehicle according to a first embodiment of the invention;

- [Figure 2] Figure 2 is a schematic partial cross-sectional view of the vehicle of Figure 1, wherein an equipment casing is shown in a stowed position in a housing;

- [Figure 3] Figure 3 is a partial sectional view according to plane A-A of the equipment casing of Figure 2, according to a first embodiment variant;

- [Figure 4] Figure 4 is a partial sectional view according to plane A-A of the equipment casing of Figure 2, according to a second embodiment variant;

- [Figure 5] Figure 5 is a view similar to Figure 2, of the public transport vehicle, where the equipment casing is represented in the deployed position;

- [Figure 6] Figure 6 is a perspective view of the housing intended to receive the equipment casing of Figure 2;

- [Figure 7] Figure 7 is a perspective view of an equipment casing according to a second embodiment of the invention.

Figure 1 shows a public transport vehicle 10 according to a first embodiment of the invention.

The public transport vehicle 10 is, for example, a railway vehicle, specifically a train for major lines, but in a variant it could form any other type of public transport vehicle, such as a tram or a bus.

The public transport vehicle 10 comprises at least one car 11, which is the one represented in Figure 1. The public transport vehicle 10 can also comprise other cars, some of which may be different and others similar to the one in Figure 1.

The car 11 comprises, in a conventional manner, a structural body 12, which gives this car 11 its general shape. The structural bodywork 12 delimits, for example, at least one passenger room and/or at least one technical room. The structural body 12 specifically comprises side walls 14 that laterally delimit the interior and exterior of the car 11 in a transverse direction Y.

The structural bodywork 12 comprises, on the other hand, a housing 16 for a casing 18 of equipment.

The equipment housing 18 is formed, for example, by a heating, ventilation and air conditioning (HVAC) unit. However, the present invention can be applied to any other type of similar equipment casing. The housing 16, shown in more detail in Figure 2, extends between a first 16A and a second 16B end, in a Y direction of removal of the equipment case 18. In the described example, the removal direction Y is also a transverse direction of the car 11.

The housing 16 is accessible at least through one of its ends 16A. Preferably, the housing 16 is accessible at each of its ends 16A, 16B.

By "accessible", it is understood that it is possible to access the interior of this housing 16 through an opening 20 arranged at the corresponding end, from the outside of this housing. The opening 20 can be permanent or, in a variant, the housing 16 can include a hatch intended to close this opening 20.

Each opening 20 is preferably arranged in one of the respective side walls 14, so that the housing 16 is accessible from the outside of the car 11. In this way, it is possible to access the equipment casing 18, for example, for reasons of maintenance.

To do this, the equipment housing 18 is movable in the extraction direction Y, between a retracted position in the housing 16 (shown in Figure 2) and an unfolded position (shown in Figures 1 and 5).

In the unfolded position, the equipment case 18 passes through the opening 20 of one of the ends 16A, and extends out of the housing 16, in the extraction direction Y, beyond this end 16A, along a distance D greater than 50% of the length of the equipment housing 18, in this removal direction, and, for example, a distance D of approximately 55% of this length of the equipment housing 18.

The equipment case 18 extends in the removal direction Y, between two ends, the length of the equipment case 18 being defined by the distance between these two ends. By convention, the end of the equipment casing 18 that is outside the housing 16, in the deployed position, will be called the "front end" and the end of the equipment casing that is inside the housing 16 will be called the "rear end". , in deployed position.

Preferably, housing 16 comprises a stop (not shown) that limits movement of equipment case 18 to distance D. Preferably, this stop can be deactivated to allow full removal of equipment case 18, when removal is desired. whole of this type. The deployed position is used in case of maintenance in the equipment case 18.

Advantageously, the housing 16 also comprises unlockable means for fastening the equipment casing 18, in the retracted position. These holding means must be unlocked in order to be able to move the equipment casing into its deployed position.

It will be noted that, in the case where the housing 16 is accessible at each of its ends 16A, 16B, then the equipment case 18 is movable, in a first direction, between the stowed position and a first deployed position beyond the first end 16A (position of Figure 5), and in a second direction, between the stowed position and a second deployed position beyond the second end 16B (position not shown).

The extraction process of the equipment casing 18 according to the invention is preferably symmetrical with respect to a central plane, so that in the present description only the extraction at one of the ends 16A will be described.

In order to guide the equipment case 18 during its displacement, the housing 16 comprises guide means, which comprise at least one lower guide surface 22 extending in the removal direction Y, and the equipment case 18 comprises at least one guide element 24 that rests on the lower guide surface 22. The guide element 24 is, for example, a rolling element (specifically a roller) or, in a variant, it can be formed by a slider.

As shown in Figure 6, the guide means preferably comprise three mutually parallel lower guide surfaces 22, specifically a central one, and two lateral ones arranged on both sides of the central lower guide surface.

Each lower guide surface 22 is preferably carried by a guide rail 25.

Advantageously, the equipment casing 18 comprises, for each guide surface 22, a plurality of rolling elements 24 aligned parallel to the extraction direction Y.

According to the invention, the housing 16 also comprises at least one upper stop surface 26 . The equipment casing 18 then comprises stop means 28 arranged below the upper stop surface 26, in a vertical direction Z, the stop means 28 being able to coact, at least partially, with the surface top stop 26, at least when the equipment case 18 is in the deployed position.

It will be noted that the vertical direction Z is the direction in which the earth's gravity acts. Generally, this vertical direction Z is substantially perpendicular to the extraction direction Y.

The upper stop surface 26 is preferably arranged on a stop rail 30.

According to the first embodiment, the guide rail 25 and the stop rail 30 are combined to form a C-shaped cross-sectional rail, comprising an upper part (formed by the stop rail 30) carrying the surface 26 of upper stop, and a lower part (formed by the guide rail 25) that carries the lower rolling surface 22.

In this case, the stop means 28 are formed by the at least one guide element 24, which is arranged to run on the C-shaped rail, between the upper part 30 and the lower part 25, as shown in Figures 3 and 4.

Advantageously, each guide element 24 is arranged with a clearance that separates this guide element 24 and the upper stop surface 26 in the vertical direction 26. This is the case in particular when the guide element 24 is a rolling element. .

On the other hand, when the guide element 24 is a skid, this guide element can be arranged without play between this guide element 24 and the upper stop surface 26 in the vertical direction Z.

According to a first embodiment variant, represented in Figure 3, the C-shaped rail is formed in a single piece, the upper 30 and lower 25 parts forming a single piece.

According to a second embodiment variant, represented in Figures 4 and 6, the guide rail 25 and the stop rail 30 are made up of two different pieces, assembled together.

According to the first embodiment, the guide elements 24 are arranged so that, in the unfolded position, at least one of these guide elements 24 co-acts with the upper stop surface 26, and at least one other of these guide elements 24 coact with the lower bearing surface 22.

The guide element 24 cooperating with the upper stop surface 26 is arranged on the rear end side of the equipment case 18. The guide element 24, cooperating with the lower stop surface 22, is arranged in a central region of the equipment housing 18, cooperating with an end part of the lower guide surface 22, in the vicinity of the first end. 16A of the housing 16, when the equipment case 18 is in the deployed position.

Under the effect of gravity, the equipment casing 18, in the deployed position, tends to tilt around the guide element in the central area. The guide element(s) of the rear end of the equipment casing 18 then act together with the upper stop surface 26, preventing any rotation in the direction of this tilting.

In the example described, the guide rail 25 (which forms the first rail part of the C-rail) has a greater length, in the extraction direction Y, than the length of the stop rail 30 (which forms the second part of the C-rail). rail in C) in this same extraction direction.

In this case, the stop rail 30 is arranged in a central area of the housing 16. Indeed, the length of the stop rail 30 is chosen so that the guide element(s) 24 at the rear end of the equipment casing 18 act together with the upper stop surface 26, in the unfolded position, as can be seen in Figure 5. It is not necessary for the stop rail 30 to have a greater length, since the guide element(s) 24 intended to act together with it does not advance further.

Preferably, the distance between the stop rail 30 and the first end 16A is substantially equal to the distance between this stop rail 30 and the second end 16B.

In the case where the housing 16 is accessible at its two ends, the length of the stop rail 30 is therefore intended to act together with the respective guide element(s) 24 corresponding to the first and second deployed positions.

Obviously, in a variant, a stop rail 30 can be provided which extends along the entire length of the housing 16.

In FIG. 7, an equipment casing 18 according to a second embodiment of the invention has been shown. In these figures, the elements analogous to those of the previous figures are designated by identical references.

According to this second embodiment, the guide elements 24, preferably formed by rolling elements, coact with guide rails that only comprise the guide surface. These are classical guide rails, which are not combined with stop rails, such as those described above.

In this case, the upper stop surface 26 is arranged above the equipment case 16. The stop means, which then comprise at least one auxiliary stop element 32, coact with the upper stop surface 26, at least in the deployed position.

In the example described, the auxiliary stop elements 32 are auxiliary rolling elements. On the other hand, the top stop surface 26 is carried by a top stop rail 34, fixed to the housing 16 above the equipment case 18. The auxiliary rolling elements 32 co-act with this upper stop rail 34.

This upper stop rail 34 prevents any tilting of the equipment case 18, in the same way as in the first embodiment.

It will be noted that the invention is not limited to the embodiments described above, but may present several complementary variants.

By way of example, the first and second embodiments described above are not mutually exclusive, so that the housing 16 can be equipped with both a C-shaped rail, as described in the first embodiment, and with a rail 34 upper, as described in the second embodiment.

It will be noted, on the other hand, that, although the present description refers to an equipment casing made up of a heating, ventilation and air conditioning unit, the invention is applicable to any other type of equipment casing whose maintenance can also be carried out removing this casing more than 50% of its housing.

Claims (9)

1. Public transportation vehicle (10), specifically, rail vehicle, comprising a structural body (12), the structural body comprising an equipment casing (18) and a housing (16) for the equipment casing (18), the equipment casing (18) being movable in an extraction direction (Y), between a stowed position in the housing and a deployed position, in which at least 50% of the length of the equipment casing (18) is in the extraction direction (Y) is outside the housing (16), where: - the housing (16) comprises at least one lower guide surface (22) extending in the extraction direction (Y), and the equipment casing (18) comprises at least one guide element (24) resting on the lower guide surface (22), and - the housing (16) comprises at least one upper stop surface (26), the equipment casing (18) comprising stop means (28) arranged below the upper stop surface (26), in a vertical direction, the stop means (28) being able to coact, at least partially, with the upper stop surface (26), at least when the equipment casing (18) is in the deployed position, characterized in that the housing (16) extends in the extraction direction (Y), between a first (16A) and a second (16B) end, the housing (16) being accessible from its two ends in the extraction direction, the equipment casing (18) being movable, in a first sense, between the stowed position and a first deployed position beyond the first end (16A), and in a second sense, between the stowed position and a second deployed position beyond from the second end (16B). 2. Public transport vehicle (10) according to claim 1, wherein the housing (16) comprises at least one rail (25, 30) with a C-shaped cross section, comprising an upper part (30) that carries the upper stop surface (26), a lower part (25) that carries the lower rolling surface (22), the stop means (28) being formed by the at least one guide element (24), arranged to circulate in the rail (25, 30) between the top (30) and the bottom (25). Public transport vehicle (10) according to claim 2, wherein the equipment casing (18) comprises at least two guide elements (24), arranged so that, in the deployed position, one of said elements (24) ) guide acts jointly with the upper stop surface (26), and the other of these guide elements (24) acts jointly with the lower rolling surface (22). Public transport vehicle (10) according to claim 2 or 3, wherein the C-shaped cross-section rail comprises a first rail part (25), carrying the lower rolling surface (22), and a second part rail (30), distinct from the first rail part (25) and connected to this first rail part (25), which carries the upper stop surface (26). Public transport vehicle (10) according to claim 4, wherein the first rail part (25) has a greater length, in the extraction direction (Y), than the length of the second rail part (30). , in this same extraction direction (Y). Public transport vehicle (10) according to claim 4 or 5, wherein the second rail part (30) is arranged in a central area of the housing (16). Public transport vehicle (10) according to any one of the preceding claims, wherein the upper stop surface (26) is arranged above the equipment casing (18), the stop means (28) comprising at least an auxiliary guide element (32) that acts together with the upper stop surface (26), at least in the deployed position. Public transport vehicle (10) according to any one of the preceding claims, wherein the upper stop surface (26) is arranged on an upper rail (34) fixed in the housing (16). Public transport vehicle (10) according to any one of the preceding claims, wherein the equipment casing (18) is a heating, ventilation and air conditioning unit.