JP7588001B2 - Assembly structure of the ascending and descending stairway - Google Patents

Description

The present invention relates to an assembly structure for an ascending/descending stairway passageway used in railway cars having passenger compartments with a floor height different from that of the entrance and exit platforms.

In railway cars, such as two-story cars, where the floor height of the passenger compartment is different from that of the platform, a stairway is provided for movement between the platform, which is at the same height as the platform, and the upper and lower rooms (see, for example, Patent Document 1). Such stairway passages use not only the staircase portion, including the treads, but also various other parts.

Patent No. 5827608

Here, when manufacturing a railway car, the parts for forming the stairway passage are often installed on the actual car, which means that it takes a lot of time to position each part, and the working space is narrow, which increases the time it takes to assemble the stairway passage.
The present invention has been made in consideration of the above problems, and an object of the present invention is to reduce the assembly time of an ascending/descending stairway passage.

(Modes of the Invention)
The following aspects of the invention are illustrative of the configuration of the present invention, and are described in terms of items to facilitate understanding of the various configurations of the present invention. Each item does not limit the technical scope of the present invention, and the technical scope of the present invention may include any embodiment in which some of the components of each item are replaced or deleted, or other components are added, while taking into account the best mode for carrying out the invention.

(1) In a railway vehicle having a passenger compartment whose floor height is different from that of the platform, an assembly structure of an ascending staircase connecting the passenger compartment and the platform includes a framework attached to the vehicle body structure, a staircase section having alternating treads and risers, two panels forming opposing inner walls of the ascending staircase, a lower bolting structure for attaching the bottom step of the staircase section to the framework, an upper bolting structure for attaching the top step of the staircase section to the framework, lower mounting brackets for connecting the lower portions of each of the two panels to the staircase section, and upper mounting brackets for attaching the upper portions of each of the two panels to the framework .

The assembly structure of a stairway for a railway vehicle described in this section is applied to an stairway that connects a platform with a passenger compartment whose floor height is different from that of the platform, and includes a framework, a stairway, two panels, a lower bolting structure, an upper bolting structure, and a lower mounting bracket and an upper mounting bracket. The framework is attached to the vehicle body structure and is the foundation of the stairway. The stairway has alternating treads and risers and, as its name suggests, is the part that essentially forms the stairway, and the two panels form the opposing inner walls of the stairway and are erected on either side of the stairway when assembled.

The lower bolting structure and upper bolting structure are for attaching the bottom and top steps of the staircase to the framework. Therefore, the staircase attached to the framework via these bolting structures is treated as a single part that can be added later. Furthermore, the lower mounting bracket is for connecting the lower part of each of the two panels to the staircase, and the upper mounting bracket is for attaching the upper part of each of the two panels to the framework. Therefore, each of the two panels attached to the staircase and framework via these mounting brackets is also treated as a single part that can be added later than the staircase.

Therefore, when manufacturing a railway vehicle, the staircase and the two panels are each transported to and attached to the actual vehicle with the multiple parts that make them up pre-assembled and processed as necessary. This eliminates the need to position the parts that make up the staircase and the two panels on the actual vehicle, and the assembly and processing of the parts that make up the staircase and the two panels can be efficiently performed in a factory rather than on the actual vehicle, significantly reducing the assembly time of the ascending and descending staircase. Furthermore, pre-assembly of the parts that make up the staircase and the two panels and the attachment of the staircase and the two panels using a bolt-fastening structure and mounting brackets reduces the amount of welding work on the actual vehicle, improving the quality of the ascending and descending staircase.

(2) In the above (1), the ascending staircase passage connects the platform and the passenger compartment while curving in a plan view, the framework includes a partition pillar erected near the center of the bend in a plan view, and the partition pillar has a three-part structure in which a middle portion spanning at least a part of the height range in which the staircase section is installed can be separated from the upper and lower ends of the partition pillar via dividing portions, and the dividing portions are connected by bolts (Claim 1).
The assembly structure of the stairway described in this section is applied to a stairway that connects between a platform and a passenger compartment while being curved (including curved and polygonal) in plan view, and the framework installed in the vehicle body includes a partition pillar that is erected near the center of the curve of the stairway that is curved in plan view. Such a partition pillar is necessary to ensure strength, but due to its installation position, there is a risk that it will hinder the movement of the pre-assembled stairway to the installation position and the change of direction when it is carried into the actual vehicle.

However, the partition column of the assembly structure of the ascending and descending stairway described in this section has a three-part structure in which the middle part of the partition column, which covers at least a part of the height range in which the stair section is installed in the actual vehicle, can be separated from the upper end side and the lower end side of the partition column. As a result, the middle part of the partition column is removed when the stair section is delivered, preventing the partition column from interfering with the stair section, and the stair section can be delivered to the installation position without affecting its strength by changing the installation position of the partition column. Moreover, although it is desirable that the upper end and the lower end of the partition column are connected to the vehicle body structure by welding or the like before the stair section is delivered from the viewpoint of workability, the three-part structure as described above realizes connection to the vehicle body structure only at the upper end side and the lower end side of the partition column. Furthermore, the divided parts of the three-part structure, that is, the upper end side and the middle part of the partition column, and the middle part and the lower end side, are connected via bolts. Therefore, the workability of installing the partition column is not reduced, and the work of delivering the stair section can be performed without any problems.

(3) In the above (2), the staircase section includes a floor material covering the treads and the risers, an anti-slip step attached to the end of the treads from above the floor material, and a side wall attached to the side of the treads and the risers, and the lower part of each of the two panels is connected to the side wall by the lower mounting bracket (Claim 2).
In the assembly structure of the ascending/descending stairway described in this section, the stairway includes flooring, anti-slip steps, and side walls, which are pre-assembled to the stairway. That is, the flooring is attached so as to cover the treads and risers, the anti-slip steps are attached to the ends of the treads from above the flooring by screws or the like, the side walls are attached to the sides of the treads and risers by welding or the like, and further processed, such as by painting, as necessary. Since the stairway is pre-assembled up to this point, it is possible to further reduce the assembly time of the ascending/descending stairway.

Furthermore, when the railcar is manufactured, the lower parts of the two panels that are brought into the actual car are connected to the side walls of the staircase via lower mounting brackets, and the connection points are not located at the side ends of the treads or risers of the staircase, but at a height that corresponds to the side walls to which they are connected. Therefore, by devising the positional relationships of each component with a view to the connection state in mind, the connection points are difficult for passengers passing through the ascending and descending staircase passage to see, and there is no need to provide a push surface between the panels and the side walls. This eliminates the need for various tasks for attaching the push surface, such as positioning, and reduces the amount of work on the actual car.

(4) In the above paragraph (3), the bolt holes of the upper bolt fixing structure are covered by the floor material of the passenger compartment or the platform and the anti-slip step of the top step when the top step is attached to the framework (Claim 3).
In the assembly structure of the ascending/descending stairway described in this section, the top step of the stairway is attached to the framework via the upper bolting structure, and the bolt holes of the upper bolting structure are covered by the floor material of the passenger compartment or the platform and the anti-slip step of the top step of the stairway. In other words, after the upper bolting structure is bolted, the floor material of the passenger compartment or the platform is laid over the bolt holes, and the anti-slip step of the top step is attached on top of that. This hides the bolt holes of the upper bolting structure and makes them invisible to passengers, preventing the aesthetics of the ascending/descending stairway from being marred.

(5) In the above items (2) to (4), the bolt holes of the lower bolt-fastening structure are covered by the platform or the floor material of the passenger compartment when the lowest step is attached to the framework (Claim 4).
In the assembly structure of the ascending/descending stairway described in this section, the bolt holes of the lower bolting structure are covered by the floor material of the passenger compartment or the platform when the lowest step of the stairway is attached to the framework via the lower bolting structure. In other words, after the lower bolting structure is bolted, the floor material of the passenger compartment or the platform is laid over the bolt holes. This hides the bolt holes of the lower bolting structure and makes them invisible to passengers, preventing the aesthetics of the ascending/descending stairway from being marred.

(6) In the above items ( 2 ) to (5), each of the two panels is constructed by attaching a decorative sheet to the surface of a plate material, and the lower mounting bracket and the upper mounting bracket are attached to the back surface of the plate material (Claim 5 ).
In the assembly structure of the ascending stairway described in this section, each of the two panels is constructed by attaching a decorative sheet to the surface of the plate material, and the lower and upper mounting brackets are attached to the back surface of the plate material by welding or the like. Then, the two panels preassembled to such a state are attached to the actual vehicle, so that the assembly time of the ascending stairway is further reduced. Furthermore, when the panels are installed in the actual vehicle, the lower and upper mounting brackets attached to the back surface of the plate material face the inside of the ascending stairway and are not visible from the front surface side of the plate material to which the decorative sheet is attached, so that the two panels can be attached via the lower and upper mounting brackets without impairing the aesthetic appearance of the ascending stairway.

Because the present invention has the above-mentioned configuration, it is possible to reduce the assembly time of the ascending and descending stairway passageway.

1 is a front view showing a schematic structure of an ascent stairway passage and its surroundings of a railway vehicle to which an assembly structure for an ascent stairway passage according to an embodiment of the present invention is applied; 1 is a front view of a portion of a railway vehicle, showing an example of a configuration of an assembly structure of an ascending/descending stairway passage according to an embodiment of the present invention; 3 is a cross-sectional view taken along line AA in FIG. 2. 1 is a perspective view showing a stair section of an assembly structure for an ascending/descending stairway passage in accordance with an embodiment of the present invention; 5 shows the stepped portion of FIG. 4, in which (a) is a plan view and (b) is a cross-sectional view taken along line BB in (a). 5A and 5B show details of the portion indicated by the symbol D in FIG. 5B, where FIG. 5A is a side view from the left side in FIG. 5B and FIG. FIG. 6 is an enlarged cross-sectional view of a portion indicated by the symbol E in FIG. 1A, 1B, and 1C show one panel of an assembly structure for an ascending/descending stairway passage in accordance with an embodiment of the present invention, in which FIG. 13A, 13B, and 13C show the other panel of the assembled structure of the ascending and descending stairway passage in the embodiment of the present invention, where FIG. 9A shows the mounting brackets of the assembly structure of an ascending staircase passage in an embodiment of the present invention, where (a) is the upper mounting bracket shown in cross-section along lines F-F in FIG. 8C and G-G in FIG. 9C, and (b) is the lower mounting bracket viewed from the side with the panel and staircase section connected.

Hereinafter, the embodiments of the present invention will be described with reference to the accompanying drawings. Here, detailed descriptions of the same or corresponding parts as those in the prior art will be omitted, and the same reference numerals will be used throughout the drawings to indicate the same or corresponding parts.
FIG. 1 shows an example of a front view of a stairway passage 86 seen from a platform 84 side of a railway car 80 to which an assembly structure 10 for a stairway passage according to an embodiment of the present invention is applied. The railway car 80 has a two-story structure with an upper room and a lower room (not shown) as passenger rooms, and can move from the platform 84, which has a floor surface at the same height as the station platform, to an upper room whose floor surface is higher than the platform 84 or a lower room whose floor surface is lower than the platform 84, via the stairway passage 86. The stairway passage 86 of the embodiment of FIG. 1 leads from the platform 84 to the upper room or the lower room while bending at about 90° in a plan view. Various parts such as handrails 88 are used in each stairway passage 86, and a partition panel 90 is interposed between the entrances of the two stairways 86.

In the following, we will explain an example in which the assembly structure 10 for an elevator staircase passageway in accordance with an embodiment of the present invention is applied to the elevator staircase passageway 86 shown on the left side of Figure 1, which leads from the platform 84 to the upper floor room, out of the two elevator staircase passageways 86 shown in Figure 1.
First, referring to Figures 2 and 3, an assembly structure 10 of an ascent stairway in accordance with an embodiment of the present invention includes a framework 12 having partition columns 14 etc., a stairway section 24 constituting the actual stairway portion, an outer panel 40 forming the outer inner wall of an ascent stairway 86 which is curved in a plan view, and an inner panel 42 forming the inner wall of an ascent stairway 86.

The framework 12 is provided in the vehicle structure of the railway vehicle 80, and is composed of a combination of multiple frame members that support other components of the assembly structure 10 of the ascending and descending stairway. In addition to the partition column 14, the framework 12 also includes a support frame 18 (see Figures 4 and 6), a landing board 20, and a floor support 22, which will be described later. As can be seen in Figure 3, the partition column 14 is erected near the center of the curve of the ascending and descending stairway 86, which is bent at about 90 degrees, and runs vertically from the upper end to the lower end of the vehicle structure. The upper end and the lower end (not shown) of the partition column 14 are welded to other components of the vehicle structure. In addition, the partition column 14 is divided into three parts via two dividing parts 16 connected by bolts. For this reason, the middle part 14b between the upper end side 14a and the lower end side 14c, which are welded to other components of the vehicle structure, is attached or detached by attaching or detaching the bolts of the dividing parts 16. As can be seen in FIG. 2, the middle portion 14b of the partition column 14 in this embodiment spans the entire height range in which the staircase section 24 is installed. The frame members that make up the framework 12 are made of appropriate materials according to the strength and other requirements for each member.

4 and 5, the staircase section 24 is bent at about 90° in plan view in accordance with the shape of the ascending/descending staircase passage 86, and the steps 26 and the risers 28 are alternately provided from the lowest step 24a to the highest step 24b. In this embodiment, four steps 26 and five risers 28 are provided between the lowest step 24a and the highest step 24b, and side walls 34, which are painted as necessary, are connected to both sides of the steps 26 and the risers 28 by welding or the like. The steps 26, the risers 28, and the side walls 34 are formed of, for example, an aluminum alloy. In addition, the steps 26 and the risers 28 are covered with flooring (floor covering) 30, and furthermore, at the tip of each step 26 (right side in FIG. 5(b)), a non-slip step 32 extending between one side wall 34 and the other side wall 34 is attached from above the flooring 30 by screws or the like. More specifically, as shown in FIG. 10(b), flooring 30 is laid on the tread 26 (as well as the riser 28) up to the vicinity of the side wall 34, and a seal 36 is provided between the flooring 30 and the side wall 34. Then, an anti-slip step 32 is attached from above the flooring 30.

5(a) and 6, the top step 24b of the staircase section 24 has four bolt holes 62, and four stair supports 64, which are U-shaped as seen in FIG. 6(a), are attached by welding or the like to the underside of the top step 24b, with the opening side of the U-shape facing upward, in accordance with the positions of the bolt holes 62. The top step 24b of the staircase section 24 is placed on the ribs 18 constituting the above-mentioned framework 12, and the stair supports 64 and the ribs 18 are connected by bolts 66 via liners or the like. The ribs 18 are U-shaped as seen in FIG. 6(b), and are provided below the left edge of the landing board 20 as shown in FIG. 3, which leads to the upper room, as shown in FIG. 3 (the back side of the paper in the figure), and are also shown in FIG. 4. The bolt holes 62, stair supports 64, and bolts 66 constitute an upper bolting structure 60 for attaching the top step 24b of the staircase section 24 to the ribs 18. Also, as shown in FIG. 6, with the bolts fastened as described above, flooring (floor covering) 76 for the upper room (landing) is laid over the bolt holes 62, and the anti-slip step 32 for the top step 24b is attached over that.

On the other hand, referring to FIG. 5(a) and FIG. 7, the lowest step 24a of the staircase section 24 is provided with four bolt holes 54, and the lowest step 24a is placed on the floor support 22 constituting the above-mentioned framework 12. Then, the lowest step 24a and the floor support 22 are connected via a liner or the like by bolts 56 inserted into the bolt holes 54. The bolt holes 54 and bolts 56 constitute the lower bolt fastening structure 52 for attaching the lowest step 24a of the staircase section 24 to the floor support 22. In addition, in the above-mentioned bolt fastening state, the floor material 78 (floor padding 78a and floor covering 78b) of the entrance and exit platform 84 is laid from above the bolt holes 54 and bolts 56. In this embodiment, a push surface 58 is provided at the boundary between the floor material 30 covering the riser 28 and the floor material 78 of the entrance and exit platform 84.

8, the outer panel 40 is generally composed of a plate 44, a decorative sheet 46, and a plurality of reinforcing members 48. In more detail, the decorative sheet 46 is attached to the surface 44a of the plate 44 facing the inner panel 42 in the ascending/descending stairway 86, and a plurality of reinforcing members 48 are attached to the opposite surface 44b of the plate 44 by welding or the like, as necessary. The plate 44 is made of, for example, an aluminum alloy. Furthermore, a plurality of lower mounting brackets 70 for connecting the lower portion of the outer panel 40 to the side wall 34 of the stairway 24 and an upper mounting bracket 74 for attaching the upper portion of the outer panel 40 to the framework 12 are attached to the back surface 44b of the plate 44 by welding or the like.

In this embodiment, five lower mounting brackets 70 are attached along the lower end of the outer panel 40 as the multiple lower mounting brackets 70, each of which has a shape as can be seen in FIG. 10(b). That is, the lower mounting bracket 70 in this embodiment is composed of a first portion 70a attached to the outer panel 40 and a second portion 70b extending further downward from the back side of the first portion 70a. Then, the second portion 70b of each of the lower mounting brackets 70 is fixed to the side wall 34 of the staircase portion 24 by a screw 72, thereby connecting the lower portion of the outer panel 40 and the side wall 34 of the staircase portion 24 through the multiple lower mounting brackets 70. In addition, the upper mounting bracket 74 in this embodiment is attached along the upper end of the outer panel 40 as shown in FIG. 8, and its cross-sectional shape in the extension direction is crank-shaped as shown in FIG. 10(a), and protrudes beyond the upper end of the outer panel 40. Then, the portion of the upper mounting bracket 74 located above the outer panel 40 is fixed to the framework 12 in an appropriate manner, and the upper portion of the outer panel 40 is connected to the framework 12 via the upper mounting bracket 74.

9, the inner panel 42, in a plan view as shown in FIG. 9(a), has a generally arcuate shape that curves in response to the curvature of the ascending and descending stairway passage 86, and is generally composed of a plate material 44, a decorative sheet 46, and a plurality of reinforcing members 48, similar to the outer panel 40. More specifically, the decorative sheet 46 is attached to the surface 44a of the plate material 44 that faces the outer panel 40 in the ascending and descending stairway passage 86, and a plurality of reinforcing members 48 are attached by welding or the like to the opposite back surface 44b of the plate material 44 as necessary. Furthermore, similar to the outer panel 40, a plurality of lower mounting brackets 70 for connecting the lower portion of the inner panel 42 to the side wall 34 of the stairway section 24 and an upper mounting bracket 74 for attaching the upper portion of the inner panel 42 to the framework 12 are attached by welding or the like to the back surface 44b of the plate material 44. In this embodiment, five lower mounting brackets 70 are attached along the lower end of the inner panel 42 as the multiple lower mounting brackets 70, and their shapes are the same as those shown in FIG. 10(b), so detailed descriptions are omitted. Also, the upper mounting bracket 74 attached along the upper end of the inner panel 42 is the same as that shown in FIG. 10(a), so detailed descriptions are omitted.

Here, the assembly structure 10 of the ascending/descending stairway according to the embodiment of the present invention is not limited to the configuration shown in Figs. 1 to 10. For example, the number of treads 26 and risers 28 of the stairway section 24, the overall shape of the stairway section 24, and the shapes of the outer panel 40 and the inner panel 42 are appropriately selected according to the shape of the ascending/descending stairway 86 to which the present invention is applied. The shape of the ascending/descending stairway 86 to which the present invention is applied is not limited to a 90° bend in plan view, but may be bent at an angle other than 90° or may be straight. In addition, the components and shapes of the lower bolting structure 52, the upper bolting structure 60, the lower mounting bracket 70, and the upper mounting bracket 74 may be any components and shapes as long as they can fulfill their functions. In addition, the assembly structure 10 of the ascending/descending stairway according to the embodiment of the present invention may be applied to the ascending/descending stairway 86 shown on the right side of Fig. 1, which is one of the two ascending/descending stairway sections 86 shown in Fig. 1, to the extent possible, from the entrance platform 84 to the lower floor room not shown. Furthermore, the present invention is not limited to the stairway passage 86 of a two-story railcar 80, but may be applied to the stairway passage 86 of any railcar having a passenger compartment whose floor height is different from that of the platform 84, such as the stairway passage 86 of a high-decker car.

Now, according to the embodiment of the present invention having the above-mentioned configuration, it is possible to obtain the following effects. That is, the assembly structure 10 of the ascent stairway according to the embodiment of the present invention is applied to an ascent stairway 86 that connects a platform 84 and a passenger compartment (upper or lower floor) whose floor height is different from that of the platform 84, as shown in Figure 1, and includes a framework 12, a stairway section 24, two panels 40, 42, a lower bolting structure 52 and an upper bolting structure 60 (see Figures 6 and 7), and a lower mounting bracket 70 and an upper mounting bracket 74 (see Figures 8 to 10), as shown in Figures 2 and 3. The framework 12 is provided on the vehicle body structure of the railway car 80, and is the foundation of the ascent stairway 86. As shown in Figures 4 and 5, the staircase section 24 is essentially a staircase, with treads 26 and risers 28 arranged alternately, as its name suggests, and the two panels 40, 42, as shown in Figures 2 and 3, form the opposing inner walls of the ascending and descending staircase passage 86, and are erected on both sides of the staircase section 24 when assembled.

The lower bolting structure 52 and the upper bolting structure 60 are for attaching the bottom step 24a and the top step 24b of the staircase section 24 to the framework 12, as shown in Figs. 6 and 7. Therefore, the staircase section 24 attached to the framework 12 via these bolting structures 52, 60 can be treated as a single part that can be added later. Furthermore, the lower mounting bracket 70 is for connecting the lower parts of the two panels 40, 42 to the staircase section 24, as shown in Fig. 10(b), and the upper mounting bracket 74 is for attaching the upper parts of the two panels 40, 42 to the framework 12. Therefore, each of the two panels 40, 42 attached to the staircase section 24 and the framework 12 via these mounting brackets 70, 74 can also be treated as a single part that can be added later than the staircase section 24.

Therefore, when manufacturing the railroad car 80, the staircase section 24 and the two panels 40, 42 can be brought into and attached to the actual car after the multiple parts that make up the staircase section 24 and the two panels 40, 42 have been preassembled and processed as necessary. This eliminates the need to position the parts that make up the staircase section 24 and the two panels 40, 42 on the actual car, and allows the parts that make up the staircase section 24 and the two panels 40, 42 to be assembled and processed efficiently in a factory rather than on the actual car. This makes it possible to significantly reduce the assembly time of the ascending and descending staircase passage 86. Furthermore, by preassembling the parts that make up the staircase section 24 and the two panels 40, 42 and attaching the staircase section 24 and the two panels 40, 42 using the bolt fastening structures 52, 60 and the mounting brackets 70, 74, the welding work on the actual car can be reduced, and the quality of the ascending and descending staircase passage 86 can be improved.

In addition, the assembly structure 10 of the ascent stairway according to the embodiment of the present invention is such that the ascent stairway 86 to which it is applied connects the platform 84 and the passenger compartment while bending in plan view, and as shown in Figures 2 and 3, the framework 12 provided on the vehicle body includes a partition column 14 erected near the center of the bend of the ascent stairway 86, which is bent in plan view. Such a partition column 14 is necessary to ensure strength, but due to its installation position, there is a risk that it may hinder the movement and direction change of the pre-assembled stairway 24 when it is brought into the actual vehicle. However, the partition column 14 of the assembly structure 10 of the ascent stairway according to the embodiment of the present invention has a three-part structure in which the middle part 14b, which covers at least a part of the height range in which the stairway 24 is installed in the actual vehicle, can be separated from the upper end side 14a and the lower end side 14c of the partition column 14. This prevents the partition column 14 from interfering with the stair section 24 by removing the middle section 14b of the partition column 14 when the stair section 24 is brought in, so the stair section 24 can be brought in to the installation position without affecting its strength by changing the installation position of the partition column 14, etc.

In addition, from the viewpoint of workability, it is desirable to connect the upper and lower ends of the partition column 14 to the vehicle structure by welding or the like before the staircase section 24 is delivered. However, the three-partition structure described above allows only the upper end side 14a and the lower end side 14c of the partition column 14 to be connected to the vehicle structure. Furthermore, the division parts 16 of the three-partition structure, that is, the upper end side 14a and the middle part 14b of the partition column 14, and the middle part 14b and the lower end side 14c, are connected via bolts. Therefore, it is possible to carry in the staircase section 24 without any problem without reducing the workability of installing the partition column 14. The position of the division part 16 of the partition column 14 may be determined taking into consideration the fact that the direction of the staircase section 24 can be changed within the railway vehicle 80, the commonality of workability between the upper room side and the lower room side, and the fact that it does not affect the strength.

Furthermore, as shown in Figs. 4 and 5, the assembly structure 10 for the ascending and descending stairway according to the embodiment of the present invention is such that the stairway section 24 includes a floor material 30, an anti-slip step 32, and a side wall 34, which are pre-assembled to the stairway section 24. That is, the floor material 30 is attached so as to cover the treads 26 and the risers 28, the anti-slip step 32 is attached to the end of the treads 26 from above the floor material 30 by screws or the like, and the side wall 34 is attached to the side of the treads 26 and the risers 28 by welding or the like, and further processed as necessary by painting or the like. Since the stairway section 24 pre-assembled up to this point can be attached to the actual vehicle, the assembly time for the ascending and descending stairway 86 can be further reduced.

When manufacturing the railcar 80, the lower parts of the two panels 40, 42 that are brought into the actual vehicle are connected to the side wall 34 of the staircase section 24 via the lower mounting brackets 70, as shown in FIG. 10(b), and the connection points are not located at the side ends of the treads 26 or risers 28 of the staircase section 24, but at a height that corresponds to the side wall 34 to which they are connected. For this reason, by devising the positional relationship of each component with an eye on the connection state, it is possible to make the connection points less visible to passengers passing through the ascending and descending staircase passage 86, and there is no need to provide a push surface between the panels 40, 42 and the side wall 34. This makes it possible to eliminate the need for various tasks for attaching the push surfaces, such as positioning, and thus reduces the amount of work required on the actual vehicle.

In addition, as shown in FIG. 6, the assembly structure 10 of the ascending/descending stairway according to the embodiment of the present invention is such that, when the top step 24b of the stairway section 24 is attached to the framework 12 via the upper bolting structure 60, the bolt holes 62 of the upper bolting structure 60 are covered by the floor material 76 of the upper room and the anti-slip step 32 of the top step 24b of the stairway section 24. That is, after the bolts are fastened in the upper bolting structure 60, the floor material 76 of the upper room is laid over the bolt holes 62, and the anti-slip step 32 of the top step 24b is further attached from above. This makes it possible to hide the bolt holes 62 of the upper bolting structure 60 and prevent them from being visible to passengers, thereby preventing the aesthetics of the ascending/descending stairway 86 from being damaged.

As shown in FIG. 7, the assembly structure 10 for the ascending/descending stairway according to the embodiment of the present invention is such that, with the lowest step 24a of the stairway section 24 attached to the framework 12 via the lower bolt fastening structure 52, the bolt holes 54 of the lower bolt fastening structure 52 are covered by the floor material 78 of the platform 84. In other words, after the lower bolt fastening structure 52 is bolted, the floor material 78 of the platform 84 can be laid over the bolt holes 54. This also hides the bolt holes 54 of the lower bolt fastening structure 52, making them invisible to passengers, thereby preventing the aesthetics of the ascending/descending stairway 86 from being marred.

Furthermore, as shown in Figs. 8 and 9, the assembly structure 10 of the ascending/descending stairway according to the embodiment of the present invention is configured such that each of the two panels 40, 42 is configured by attaching a decorative sheet 46 to the surface 44a of the plate material 44, and the lower mounting bracket 70 and the upper mounting bracket 74 are attached to the back surface 44b of the plate material 44 by welding or the like. Then, the two panels 40, 42 preassembled to such a state can be attached to the actual vehicle, so that the assembly time of the ascending/descending stairway 86 can be further reduced. Furthermore, when the panels 40, 42 are installed on the actual vehicle, the lower mounting bracket 70 and the upper mounting bracket 74 attached to the back surface 44b of the plate material 44 are directed toward the inside of the ascending/descending stairway 86 and cannot be seen from the surface 44a side of the plate material 44 to which the decorative sheet 46 is attached. Therefore, it is possible to attach the two panels 40, 42 via the lower mounting bracket 70 and the upper mounting bracket 74 without impairing the aesthetic appearance of the ascending/descending stairway 86.

10: Assembly structure of ascending/descending stairway passage, 12: Frame, 14: Partition pillar, 14a: Upper end side, 14b: Middle part, 14c: Lower end side, 16: Dividing part, 24: Stairway part, 24a: Lowermost step, 24b: Uppermost step, 26: Tread, 28: Riser, 30: Flooring material, 32: Anti-slip step, 34: Side wall, 40: Outer panel, 42: Inner panel, 44: Plate material, 44a: Surface, 44b: Backside, 46: Decorative sheet, 52: Lower bolting structure, 54: Bolt hole, 60: Upper bolting structure, 62: Bolt hole, 70: Lower mounting bracket, 74: Upper mounting bracket, 76: Flooring material of upper room, 78 (78a, 78b): Flooring material of entrance platform, 80: Railway vehicle, 84: Entrance platform, 86: Ascending/descending stairway passage

Claims (5)

In a railway vehicle having a passenger compartment with a floor height different from that of an access platform, an assembly structure of an ascent stairway connecting the access platform and the passenger compartment,
A framework provided in a vehicle body structure;
A staircase portion in which treads and risers are alternately provided;
Two panels forming opposing inner walls of the stairway passage;
a lower bolt fastening structure for attaching the lowest step of the staircase to the framework, and an upper bolt fastening structure for attaching the highest step of the staircase to the framework;
a lower bracket for connecting a lower portion of each of the two panels to the stair section, and an upper bracket for attaching an upper portion of each of the two panels to the framework ;
The ascending/descending stairway connects the platform and the passenger compartment while curving in a plan view,
The framework includes a partition column erected near the center of the bend in a plan view,
This assembly structure for an ascent staircase passage is characterized in that the partition column has a three-part structure in which a middle portion spanning at least a part of the height range in which the staircase section is installed can be separated via dividing sections from the upper and lower ends of the partition column, and the dividing sections are connected by bolts . The staircase portion includes a floor material covering the treads and the risers, an anti-slip step attached to the end of the treads from above the floor material, and a side wall attached to the side of the treads and the risers,
2. The staircase walkway assembly of claim 1, wherein said lower brackets connect the lower portions of each of said two panels to said side walls. The assembly structure of the staircase passageway according to claim 2, characterized in that the bolt holes of the upper bolt fastening structure are covered by the floor material of the passenger compartment or the platform and the non-slip step of the top step when the top step is attached to the framework. The assembly structure of an ascending/descending stairway passage according to any one of claims 1 to 3, characterized in that the bolt holes of the lower bolt fastening structure are covered by the platform or the floor material of the passenger compartment when the lowest step is attached to the framework. Each of the two panels is configured by attaching a decorative sheet to a surface of a plate material,
5. The assembly structure of an ascending or descending staircase passage according to claim 1, wherein the lower mounting bracket and the upper mounting bracket are attached to the back surface of the plate material.

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