CN113135200A - Carrier step and related mounting method - Google Patents
Carrier step and related mounting method Download PDFInfo
- Publication number
- CN113135200A CN113135200A CN202110039978.9A CN202110039978A CN113135200A CN 113135200 A CN113135200 A CN 113135200A CN 202110039978 A CN202110039978 A CN 202110039978A CN 113135200 A CN113135200 A CN 113135200A
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- CN
- China
- Prior art keywords
- module
- stair
- lateral partition
- partition wall
- support
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D1/00—Carriages for ordinary railway passenger traffic
- B61D1/06—Carriages for ordinary railway passenger traffic with multiple deck arrangement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D23/00—Construction of steps for railway vehicles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Steps, Ramps, And Handrails (AREA)
- Ladders (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention relates to a carrier step and a related mounting method. The carrier step includes: a stairwell having a lower floor (16), an upper floor (18), external lateral partition walls and internal lateral partition walls, at least one stairmodule (8) comprising a plurality of rungs (20) each extending from an internal lateral partition wall to an external lateral partition wall, the one or more stairmodules (8) extending from the lower floor (16) to the upper floor (18). The stairway (4) comprises a structural module (10) extending between the outer and inner lateral partition walls in a central region of the stairwell (6), the structural module (10) being independent of the outer and inner lateral partition walls, the structural module (10) comprising a plurality of step holding members (22), at least three steps (20) of at least one step module (8) each being supported by one of the step holding members (22).
Description
Technical Field
The invention relates to a carrier ladder, especially a rail carrier ladder, comprising:
a stairwell having a lower floor, an upper floor at a relatively higher level than the lower floor, an outer lateral partition wall and an inner lateral partition wall,
-at least one stair module comprising a plurality of stairs each extending from an inner lateral partition wall to an outer lateral partition wall, the one or more stair modules extending from a lower floor up to an upper floor.
More specifically, the invention relates to a ladder for mounting on a vehicle, in particular a rail vehicle comprising two heights.
Background
Such steps are used, for example, for installation in rail vehicles. The step is in particular mounted between a first base plate of the rail vehicle and a second base plate of the rail vehicle.
Steps comprising a plurality of portions, each portion having both structural and aesthetic functions, may be installed in the field of rail vehicles. Each part of the step is formed in particular by a polyester molded block. These polyester blocks each weigh about 45kg, for example. Each section has at least one rung, at least one kick, and ladder stringers located on both sides of all of the rungs to connect the rungs to each other. The ladder stringers extend along both sides of the ladder and maintain the rungs at both ends of the ladder stringers. Each section is mounted on adjustment studs secured to the rail vehicle bulkhead or floor, which, after adjustment, ensure adequate alignment at the joints between the sections of the steps, particularly between the ladder stringers. The discontinuities formed at the joints between the ladder stringers are filled with a coating to improve the aesthetic appearance of the ladder.
However, such carrier steps are not entirely satisfactory. In fact, the paint applied at the junction area of the ladder stringers impairs the overall aesthetic appearance of the ladder. Moreover, the installation of such a step is tedious, in particular due to the adjustment step and the paint filling step. Due to the weight of these parts, installing such a ladder also requires the installation of a loading and unloading tool and the cooperation of two operators.
Disclosure of Invention
The present invention aims to overcome these disadvantages by providing a ladder with improved aesthetics and simplified assembly.
To this end, the invention relates to a carrier step of the above-mentioned type, characterized in that the step comprises a structural module extending between an outer lateral partition wall and an inner lateral partition wall in a laterally central region of the stairwell, the structural module being independent of the outer lateral partition wall and the inner lateral partition wall, the structural module comprising a plurality of step holding members, at least three steps of at least one step module each being supported by one of the step holding members.
Since the structural module extends in the laterally central region of the stairwell, no ladder stringers are required in such a stairwell. Thus, in the absence of ladder stringers, no decorative coating need be applied. This improves the aesthetic appearance of the ladder and facilitates the installation of the ladder.
The use of such a structure also allows to reduce the weight of the components, which can then be installed without the installation of handling tools, all the assembly operations being carried out by only one operator.
The vehicle step according to the invention, in particular a rail vehicle step, may also comprise one or more of the following features, taken alone or in any technically possible combination:
the structural module comprises a longitudinally extending support frame having a lower longitudinal end rigidly fixed to the stairwell at a first level and an upper longitudinal end at a second level higher than the first level, preferably the support frame is at a distance from the inner lateral partition wall and at a distance from the outer lateral partition wall;
the support frame is a beam, preferably a linear beam, to which each step holding member is fixed;
each step holding member comprises a horizontal plate on which the corresponding step is placed;
the step holding members are regularly spaced along the longitudinal direction of the support frame;
-each step support member extends over less than 50% of the lateral width of each corresponding step,
the stairwell comprises transverse retaining bulkheads substantially perpendicular to the outer and inner lateral bulkheads, the stairwell comprising an upper support fixed to the transverse retaining bulkheads and a lower support fixed to the lower floor, the lower and upper longitudinal ends of the support frame being fixed to the lower and upper supports, respectively;
-external and internal corner pieces integrally connecting both sides of each step to the internal and external bulkheads;
-a lower step module, an intermediate step module and an upper step module.
The invention also relates to a method for mounting a vehicle step as described above, in particular a rail vehicle step, characterized in that it comprises:
-a first phase of placing the structural module; and
a second step of placing at least one stair module on a structural module, in particular a lower stair module, an intermediate stair module and an upper stair module, the structural module comprising a support frame.
According to a particular embodiment, the installation method comprises one or more of the following features, taken alone or in combination:
the first step of placing the structural module comprises:
-integrally connecting the lower support to the carrier lower base plate;
-integrally connecting an upper support to the transverse retaining bulkheads;
-fixing the lower longitudinal end of the support frame on the lower support; and
-fixing the upper longitudinal end of the support frame on the upper support; and
the integral connection of the upper support to the carrier comprises an adjustment step in which the upper support is positioned so that the surface of each step holding member supporting the corresponding step fits parallel to the lower plate of the carrier, each step of the stair module being parallel to each other.
Drawings
The invention will be better understood from reading the following description, given purely by way of non-limiting example and with reference to the accompanying drawings, in which:
fig. 1 is a schematic side view of a carrier step according to the present invention;
fig. 2 is a schematic perspective view of a part of a carrier step according to the invention when performing the mounting method; and
fig. 3 is a schematic perspective view of a part of a carrier step according to the invention at the end of the mounting method.
Detailed Description
In the following description, we consider the direct orthogonal basis (X, Y, Z). The height direction Z is defined according to the height of the vehicle and corresponds to the vertical direction, for example, when the vehicle is on a horizontal lane. The longitudinal direction X corresponds to the front-rear direction of the carrier and the transverse direction Y corresponds to the width of the carrier.
The terms "upper" and "lower" and "high" and "low" are defined with respect to the height direction Z. The terms "left" and "right" are defined relative to the lateral direction Y in the normal direction of travel of the vehicle.
The term "inner" is to be understood as being closer to a longitudinal line through the center of the carrier than the term "outer", while the term "outer" is to be understood as being further from said longitudinal line through the center of the carrier.
In fig. 1 a carrier 1 comprising a carrier step 4 according to the invention is depicted. The vehicle 1 is, for example, a track vehicle. As a variant, the vehicle 1 is a bus or a car.
The carrier step 4 comprises a step well 6, at least one step module 8 and a structural module 10.
The stairwell 6 comprises inner lateral partition walls 12, outer lateral partition walls 14, a lower floor 16 and an upper floor 18 at a relatively higher level than the lower floor 16.
Typically, the stairwell 6 also comprises a lateral retaining bulkhead 19.
The or each stair module 8 comprises a plurality of stairs 20, each of the plurality of stairs 20 extending between an inner lateral partition wall 12 and an outer lateral partition wall 14, the one or more stair modules 8 extending from a lower floor 16 to an upper floor 18.
The structural module 10 extends between an outer lateral partition wall 14 and an inner lateral partition wall 12 in a laterally central region of the stairwell 6. The structural module 10 is independent of the outer and inner lateral bulkheads 14, 12. The structural module includes a plurality of step holding members 22. Each step holding member 22 supports one of the steps 20 of one of the step modules 8.
The structural module 10 comprises a support frame 24, to which support frame 24 each step holding member 22 is fixed.
The stairway 4 comprises a lower support 26 and an upper support 28 fixed to the stairway 6 and held on either side of the support frame 24.
The stairwell 6 forms a space in which the stairmodule 8 and the structural module 10 extend. The internal lateral partition wall 12 and the external lateral partition wall 14 are substantially parallel to each other and substantially parallel to the plane (Y, Z). In the carrier 1, the outer lateral bulkheads 14 are more off-center than the inner lateral bulkheads 12. The lower base plate 16 and the upper base plate 18 are substantially parallel to each other and substantially parallel to the plane (X, Y). The lower floor 16 and upper floor 18 are perpendicular to the inner and outer lateral partition walls 12, 14. The transverse retaining webs 19 extend substantially parallel to the planes (Y, Z). The transverse retention bulkheads 19 are substantially perpendicular to the outer lateral bulkheads 14 and the inner lateral bulkheads 12. The transverse retaining bulkheads 19 extend perpendicular to and between the planes formed by the lower and upper floor plates 16, 18 and the inner and outer lateral bulkheads 12, 14.
At least three and advantageously five step holding members 22 are fixed to the structural module 10. At least three steps 20 of at least one step module 8 are each supported by one step holding member.
The structural module 10 bears the weight of the step module 8. The structural module 10 transmits the forces exerted on the stairwell module 8 to the stairwell 6. The structural module 10 in particular bears at least 50% of the weight of each step module 8.
As shown in fig. 2, the support frame 24 has an elongated shape defining a longitudinal direction of the support frame 24. The longitudinally elongated support frame 24 has a lower longitudinal end 30 and an upper longitudinal end 32. The lower longitudinal end 30 and the upper longitudinal end 32 are located on both sides of the support frame 24 in the longitudinal direction of the support frame 24.
The lower longitudinal end 30 of the support frame is rigidly fixed to the stairwell 6 at a first level and the upper longitudinal end 32 is located at a second level higher than the first level.
The support frame 24 extends in a laterally central region of the stairwell 6. Support frames 24 extend between the inner lateral bulkheads 12 and the outer lateral bulkheads 14. The frame extends at a distance from the inner lateral bulkheads 12 and the outer lateral bulkheads 14. The frame extends, for example, equidistant from the inner lateral partition wall 12 and the outer lateral partition wall 14. The longitudinal direction of the frame 24 extends, for example, in the mid-plane of the inner lateral partition wall 12 and the outer lateral partition wall 14.
The support frame 24 is a beam to which each step holding member is fixed. The support frame 24 is more specifically a rectilinear beam. The beams forming the support frame 24 are, for example, I-shaped, U-shaped, H-shaped, circular or rectangular in cross-section. According to a particular embodiment, the cross-section of the beams forming the support frame 24 is constant.
As shown in fig. 2, the step holding member 22 is integrally connected with the support frame 24. The step holding members 22 are regularly spaced longitudinally along the support frame 24.
Each step holding member 22 is placed on an upper region of the support frame 24. Each step holding member 22 includes a connecting area 34. Each step holding member comprises a horizontal plate 36 on which the corresponding step 20 is placed.
Each connection region 34 is for example a vertically oriented pole. Each connection region 34 is placed between the support frame 24 and one of the corresponding horizontal plates 36. Each connecting region 34 integrally connects a corresponding horizontal plate 36 to the support frame 24.
Each horizontal plate 36 is fixed on an upper portion of one of the corresponding connection regions 36. Each horizontal plate 36 is plate-shaped, for example cylindrical, and more specifically prismatic in shape. Each horizontal plate 36 is, for example, parallelepiped. Each horizontal plate 36 includes a mating surface 38 that supports one of the steps 20. Each mating surface 38 is horizontal. Each step retention member 22 extends over at least 50% of the lateral width of each corresponding step 20. The area of each mating face 38 is, for example, greater than 50% of the area of the step 20 to which it corresponds.
The structural modules provide sufficient rigidity and robustness to the ladder without ensuring its aesthetic appearance. The structural module is therefore lightweight and easy to transport and install.
The stair module 8 is visible in fig. 3. Each step module 8 comprises at least two steps 20, at least one skirting board 40 and a plurality of corner pieces 42, in particular twice as many corner pieces as steps.
Each step 20 extends from inner lateral partition wall 12 to outer lateral partition wall 14. Each step 20 is substantially horizontal. The steps 20 are all of substantially the same size. Each step is capable of resting on one of the mating surfaces 38 of the horizontal plate 36 of the step holding member 22.
Each skirting 40 extends from the inner lateral partition wall 12 to the outer lateral partition wall 14. Each skirting 40 is substantially vertical. The skirting boards 40 all have substantially the same dimensions.
The stair module 8 is formed of a simple and lightweight structure that is easy to transport and install.
Each corner piece 42 is integrally connected at a lateral end of one of the steps 20. Specifically and for each step, corner piece 42 holds the end of step 20 on the side of inner lateral partition wall 12, while corner piece 42 holds the opposite end of step 20 on the side of outer lateral partition wall 14. For each step 20, corner pieces 42 are secured to inner lateral partition wall 12 and corner pieces 42 are secured to outer lateral partition wall 14. Thus, the two corner pieces 42 hold each step 20 on the inner lateral partition wall 12 on the one hand and each step 20 on the outer lateral partition wall 14 on the other hand. Exterior and interior corner pieces 42, 42 integrally connect both sides of each step 20 to interior and exterior side walls 12, 14.
According to a particular embodiment not shown, the stairs include a lower stair module 44, an intermediate stair module 46, and an upper stair module 48.
The lower step module 44, the middle step module 46 and the upper step module 48 are fixed to the structural module 10.
The lower step module 44 is fixed in the lower region of the structural module 10. The upper step module 48 is fixed in the upper region of the structural module 10. The middle step module 46 is secured between the lower step module 44 and the upper step module 48.
According to the embodiment shown, some of the steps 20 in at least one stair module 8 do not rest on the structural module 10. Thus, some of the steps 20 rest on the upper bulkhead 50 of the ladder bay 52.
The steps 20 and skirting of the lower step module 44, the middle step module 46 and the upper step module 48 are regularly spaced in space.
The lower support 26 is fixed to the lower plate 16. The frame 24 is fixed to a lower support 26. The lower support 26 retains the lower longitudinal end 30 to the lower base plate 16.
The lower and upper longitudinal ends 30, 32 of the support frame 24 are secured to the lower and upper supports 26, 28, respectively.
The upper support 28 is fixed to the lateral retaining bulkheads 19. The frame 24 is secured to the upper support 28. The upper support 28 holds the upper longitudinal end 32 on the transverse retaining bulkhead 19. The fixed position of the upper support 28 on the transverse retaining partition wall 19 is variable in order to adjust the position of the upper longitudinal end 32. According to a particular embodiment, the fixed position of the upper support 28 is not variable, but the upper support 28 comprises an adjustment member.
The method of mounting the carrier step 4 according to the invention will now be described.
The mounting method of mounting a carrier step 4 comprises a first step of placing a structural module 10, followed by a second step of placing at least one step module 8 on the structural module 10, the structural module 10 comprising a support frame 24.
The first step of placing the structural module 10 includes the act of integrally connecting the lower support 26 to the lower base plate 16. The lower support 26 is integrally connected, for example, with screws or rivets.
The first step then comprises the action of integrally connecting the upper support 28 to the transverse retaining bulkheads 19. The upper support 28 is integrally connected, for example, with screws or rivets.
The action of integrally connecting the upper support 28 to the lateral holding partition wall 19 includes an adjustment step of adjusting the position of the upper support 28, in which the position of the upper support 18 is determined such that the horizontal plate 36 of each step holding member 22 supporting the corresponding step 20 is parallel to the lower floor 16 of the vehicle, and each step 20 of the step module 8 is parallel to each other.
The adjusting step of adjusting the position of the upper support 28 includes measuring and determining the position of the upper support 28, thereby allowing each mating surface 38 to be parallel to the lower plate 16 and the upper plate 18.
The first step then comprises the action of fixing the lower longitudinal end 30 of the support frame 24 on the lower support 26, followed by the action of fixing the upper longitudinal end 32 of the support frame 24 on the upper support 28. The upper longitudinal end portion 32 is fixed to the upper support 28 in a position determined at the time of the adjustment step of adjusting the position of the upper support 28.
The second step of placing at least one stair module 8 on the structural module 10 comprises placing each stair module 8 on the structural module 10. The second step comprises, for example, placing the lower step module 44, the middle step module 46 and the upper step module 48 on the structural module 10.
According to an embodiment, the second step is before or after the corner pieces 42 are secured to the inner and outer lateral partition walls 12, 14 and the steps 20.
The mounting method comprises simple mounting steps and makes it possible to mount the carrier step 1 by a single user using a simple tool.
According to an embodiment not shown, all the stairs 20 of each stair module 8 rest on the structural module 10.
Claims (10)
1. A carrier step (4), in particular a rail carrier step, comprising:
-a stairwell (6) having a lower floor (16), an upper floor (18) at a relatively higher level than the lower floor (16), an outer lateral partition wall (14) and an inner lateral partition wall (12),
-at least one stair module (8) comprising a plurality of stairs (20) each extending from the inner lateral partition wall (12) to the outer lateral partition wall (14), the one or more stair modules (8) extending from the lower floor (16) to the upper floor (18);
characterized in that the stairway (4) comprises a structural module (10) extending between the outer lateral partition wall (14) and the inner lateral partition wall (12) in a laterally central region of the stairwell (6), the structural module (10) being independent of the outer lateral partition wall (14) and the inner lateral partition wall (12), the structural module (10) comprising a plurality of step holding members (22), at least three steps (20) of the at least one stairway module (8) each being supported by one of the step holding members (22).
2. The stairway according to claim 1, wherein the structural module (10) comprises a longitudinally extending support frame (24) having a lower longitudinal end (30) rigidly fixed to the stairwell at a first level and an upper longitudinal end (32) at a second level higher than the first level, the support frame (24) preferably being at a distance from the inner lateral partition wall (12) and at a distance from the outer lateral partition wall (14).
3. The stair of claim 2 wherein the support frame (24) is a beam, preferably a linear beam, to which each step holding member (22) is fixed.
4. The stair of any one of claims 1 to 3 wherein each step retention member (22) comprises a horizontal plate (36), the corresponding step being placed on the horizontal plate (36).
5. The stair of any one of claims 2 to 3 wherein the stair well (6) comprises a transverse retaining bulkhead (19) substantially perpendicular to the outer and inner lateral bulkheads (14, 12), the stair (4) comprising an upper support (28) fixed to the transverse retaining bulkhead (19) and a lower support (26) fixed to the lower floor (16), the lower and upper longitudinal ends (30, 32) of the frame support (24) being fixed to the lower and upper supports (26, 28), respectively.
6. The stair of any one of claims 1 to 3 wherein exterior corner pieces (42) and interior corner pieces (42) integrally connect both sides of each step (20) to the interior lateral partition walls (12) and the exterior lateral partition walls (14).
7. The stair of any one of claims 1 to 3 comprising a lower stair module (44), an intermediate stair module (46) and an upper stair module (48).
8. An installation method of installing a vehicle step (4), in particular a rail vehicle step, according to any one of claims 1 to 3, characterized in that the method comprises:
-a first step of placing the structural module (10); and
-a second step of placing the at least one stair module (8) on the structural module (10), in particular a lower stair module (44), an intermediate stair module (46) and an upper stair module (48), the structural module (10) comprising a support frame (24).
9. The mounting method of a mounting vehicle step according to claim 8, wherein the first step of placing the structural module (10) comprises:
-integrally connecting a lower support (26) to said lower floor (16) of the vehicle (1);
-integrally connecting an upper support (28) to the transverse retaining bulkheads (19);
-fixing a lower longitudinal end (30) of the support frame (24) on the lower support (26); and
-fixing an upper longitudinal end (32) of the support frame (24) on the upper support (28).
10. The stair installation method according to claim 9, wherein integrally connecting the upper support (28) to the vehicle (1) comprises an adjustment step in which the position of the upper support (32) is determined so that the mating face (38) of each step holding member (22) supporting the corresponding step (20) is parallel to the lower floor (16) of the vehicle (1), each step (20) of the step modules (8) being parallel to each other.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2000456A FR3106316B1 (en) | 2020-01-17 | 2020-01-17 | Vehicle stairs and associated mounting method |
| FR2000456 | 2020-01-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113135200A true CN113135200A (en) | 2021-07-20 |
Family
ID=69903649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110039978.9A Pending CN113135200A (en) | 2020-01-17 | 2021-01-13 | Carrier step and related mounting method |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3851353B1 (en) |
| CN (1) | CN113135200A (en) |
| ES (1) | ES2912150T3 (en) |
| FR (1) | FR3106316B1 (en) |
| PL (1) | PL3851353T3 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3127925A1 (en) * | 2021-10-11 | 2023-04-14 | Speedinnov | Rail vehicle stairwell |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005057902A1 (en) * | 2005-12-02 | 2007-06-06 | Siemens Ag | Steps for double-decker rail vehicle have individual steps designed as self-supported steps, which are connected by screwing on with vehicle body structure |
| DE102014208221A1 (en) * | 2014-04-30 | 2015-11-19 | Siemens Aktiengesellschaft | Rail vehicle with a two-story passenger cabin layout and a staircase |
| CN207496581U (en) * | 2017-11-16 | 2018-06-15 | 中车株洲电力机车有限公司 | A kind of two-layer vehicle guest room staircase structure |
-
2020
- 2020-01-17 FR FR2000456A patent/FR3106316B1/en active Active
-
2021
- 2021-01-13 CN CN202110039978.9A patent/CN113135200A/en active Pending
- 2021-01-15 PL PL21151816T patent/PL3851353T3/en unknown
- 2021-01-15 ES ES21151816T patent/ES2912150T3/en active Active
- 2021-01-15 EP EP21151816.2A patent/EP3851353B1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| FR3106316A1 (en) | 2021-07-23 |
| ES2912150T3 (en) | 2022-05-24 |
| EP3851353A1 (en) | 2021-07-21 |
| EP3851353B1 (en) | 2022-02-09 |
| PL3851353T3 (en) | 2022-05-16 |
| FR3106316B1 (en) | 2022-01-28 |
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