JP7724674B2 - Loading platform equipment for road-rail vehicles - Google Patents

Description

The present invention relates to a loading platform device for a road-rail vehicle (hereinafter simply referred to as the loading platform device), and in particular to a loading platform device for a road-rail vehicle that has functions suitable for use in work involving the transport of equipment such as platform doors and their removal from the platform.

Traditionally, the work of transporting platform doors to be installed on station platforms (hereinafter simply referred to as platforms) has been carried out by loading multiple platform doors onto a cart at a maintenance base, towing it with a maintenance vehicle, transporting it to the destination station where the platform doors would be installed, and unloading it onto the platform.
On the other hand, Patent Document 1 describes an invention relating to a bridging device between the platform and a rail-road vehicle equipped with a loading platform that can travel on public roads and railways to transport equipment, stop next to the platform, and unload the equipment from the loading platform onto the platform.

Utility Model Registration No. 3229215 Japanese Patent Application Laid-Open No. 2017-226509

Maintenance vehicles are generally used for maintenance work, such as overnight work, between the last train and the first train. When entering the line, track closure procedures and approvals must be obtained to prevent other trains from entering a certain section of the track. Furthermore, there are only a limited number of maintenance bases where platform screen doors can be loaded. This means that the distance and travel time from the maintenance base where the doors are loaded to the station where they are installed is long, limiting the time available for installing the doors.

On the other hand, since road-rail vehicles can travel on public roads and railway tracks, the sections where track closures are required are limited to the vicinity of stations where platform doors are installed, which has the advantage of ensuring sufficient work time for installing the platform doors on the platforms.
However, because road-rail vehicles are narrower than maintenance vehicles, the gap between the loading platform and the platform is larger. Therefore, while a simple slope such as a steel plate was sufficient when transporting platform doors using a maintenance vehicle and unloading them onto the platform, a bridging device that fills the gap between the loading platform and the platform, such as that described in Patent Document 1, was required to transport platform doors using a road-rail vehicle and unload them onto the platform.

The bridging device described in Patent Document 1 has a connecting mechanism on the side of the loading platform of the road-rail vehicle, consisting of connecting members, gradient adjustment jigs, receiving members, loading platform side crossing plates, etc., and this connecting mechanism rotatably connects the slope plate, which poses the problem of requiring significant modifications to the loading platform of the road-rail vehicle. Meanwhile, the bridging device in Patent Document 1 has foldable fence-like handrails on both sides of the slope plate, which is effective in preventing workers from falling. However, because the bridging device in Patent Document 1 does not have handrails on the loading platform side of the road-rail vehicle, it is not sufficient in preventing work vehicles from falling.

Furthermore, even if a handrail similar to the handrail on the ramp side were installed on the loading platform side of the road-rail vehicle, when the ramp was deployed it would slope downward from the loading platform of the road-rail vehicle towards the platform, creating a gap between the top of the handrail on the ramp side and the top of the handrail on the loading platform side of the road-rail vehicle that would be wider than the gap at the bottom of the handrail, creating the risk of workers falling through that gap.
Incidentally, Patent Document 2 describes an invention in which handrails are provided on the loading platform of a road-rail vehicle, but the invention in Patent Document 2 is directed to a road-rail vehicle for high-altitude work that raises and lowers the loading platform, and is not directed to transporting equipment, so a ramp is not required.

The present invention has been made to solve the above-mentioned problems, and its purpose is to provide a loading platform device for a road-rail vehicle that can efficiently transport and unload equipment and materials without modifying the loading platform of the road-rail vehicle.
Another object of the present invention is to provide a highly safe loading platform device for a rail-road vehicle that, when the slope plate is deployed, eliminates the occurrence of a gap between the top of the handrail on the slope plate side and the top of the handrail on the loading platform side of the rail-road vehicle.

In order to achieve the above object, the present invention is
A loading device installed on the loading platform of a road-rail vehicle for carrying equipment or materials to or from a station platform,
A base plate installed on the loading platform of the road-rail vehicle,
A loading platform side fence erected on the edge of the base plate excluding the station platform side;
a slope plate having a length longer than the width of the gap between the side edge of the loading platform of the road-rail vehicle and the edge of the station platform, one side of which is rotatably attached to the edge of the base plate on the station platform side via a hinge;
A pair of slope side fences provided on both sides of the slope plate;
The base plate is configured to be fixed to and detached from the loading platform of the road-rail vehicle.

With the above-described loading platform device for road-rail vehicles, a base plate is attached to the platform-side edge of the road-rail vehicle's loading platform in a manner that allows it to pivot via a hinge, making it possible to transport and unload equipment without modifying the loading platform of the road-rail vehicle. Furthermore, because equipment can be transported to and from the station platform using a road-rail vehicle, there is no need to obtain track closure procedures or approvals, and there are no restrictions on where the platform doors can be loaded. This shortens the distance and travel time from the loading location to the receiving station, eliminating any pressure on the work time available for installing the platform doors.

Preferably, the upper surface of the base plate is provided with a plurality of equipment fixing portions on which equipment to be carried in or out can be immovably installed.
According to this configuration, the equipment being carried in or out can be prevented from moving during transportation, and transportation can be carried out safely.

Also, preferably, a damper is provided between the slope plate and the base plate.
This configuration can prevent the slope plate from suddenly falling over when tilting it onto the platform, which could cause damage to the slope plate or the top surface of the platform.

Desirably, the upper edge of the platform-side fence is provided with a frame that can rotate horizontally and can be fixed so as not to rotate in two directions: perpendicular to the edge of the station platform, and parallel to the edge of the station platform. When fixed in the direction perpendicular to the edge of the station platform, the frame protrudes beyond the width of the gap between the side of the platform of the road-rail vehicle and the edge of the station platform, preventing it from falling off and acting as a stopper.

With the above configuration, even if the gap between the top of the fence on the slope plate side and the top of the fence on the loading platform device side becomes wider than the gap between the edge of the loading platform of the road-rail vehicle and the edge of the station platform when the slope plate is tilted onto the platform, the frame can close the gap, preventing workers from falling off. Furthermore, when the slope plate is raised, it can be locked to prevent it from tilting, allowing for the safe transport of equipment.

Furthermore, preferably, the bed side fence is made of a pipe material,
The frame for preventing falling off and serving as a stopper is connected to the loading platform side fence so as to be movable up and down by a connecting fitting having a through hole through which a pipe material of the loading platform side fence can be inserted,
a first hole having a rectangular cross section is formed at a lower portion of the through hole, and a second hole having a circular cross section and a diameter smaller than the length of one side of the first hole is formed at an upper portion of the through hole so as to be continuous with the first hole;
The vertical pipe material of the loading platform side fence is configured to have a square pillar- shaped locking portion that can be fitted into the square hole.

With the above configuration, the lock is released by simply lifting the frame that serves as a stopper and prevents the bed from rotating, and by lowering the frame after rotating it 90 degrees, it can be locked to prevent rotation, making it extremely simple to lock and unlock the frame that serves as a stopper and prevents the bed from rotating.

Also, preferably, the lower end of the slope-side fence is fixed to the slope plate so as not to be able to rotate.
This configuration can prevent the slope-side fence from rattling, thereby increasing safety in the event of a worker coming into contact with it.

This invention makes it possible to efficiently transport and unload equipment and materials without modifying the loading platform of a road-rail vehicle. It also has the advantage of realizing a highly safe loading platform device for a road-rail vehicle, which eliminates gaps between the top of the handrail on the slope plate side and the top of the handrail on the loading platform side of the road-rail vehicle when the slope plate is deployed.

1 is a perspective view showing the overall configuration of a loading platform device for a road-rail vehicle according to an embodiment of the present invention. FIG. 1 is a perspective view showing a state in which platform doors are loaded as equipment to be transported onto a loading platform device for a road-rail vehicle according to an embodiment and a slope plate is deployed. FIG. 2 is a side view showing the state in which the slope plate of the loading platform device for a road-rail vehicle according to the embodiment is unfolded. 1 is an enlarged perspective view showing a tilt prevention structure that maintains the slope plate of the loading platform device for a road-rail vehicle in an upright position according to an embodiment of the present invention. FIG. FIG. 2 is a plan view showing the state in which the slope plate of the loading platform device for a road-rail vehicle according to the embodiment is unfolded. 1A and 1B show a specific example of a fall prevention and stopper for a loading platform device for a road-rail vehicle according to an embodiment of the present invention, in which (A) is an exploded perspective view and (B) is a perspective view showing the device in an outwardly opened state. 7 shows a specific example of the connecting fittings for preventing falling off and serving as stoppers shown in FIG. 6, where (A) is a plan view in an outwardly opened state, (B) is a cross-sectional view taken along line B-B in (A), and (C) is a cross-sectional view taken along line C-C in (A). 7A and 7B show the fall-off prevention and stopper shown in FIG. 6, in which FIG. 7A is a perspective view showing the lock-free state, and FIG. 7B is a perspective view showing the locked state after being rotated inward.

Hereinafter, an embodiment of a loading platform device for a road-rail vehicle according to the present invention will be described in detail with reference to the drawings.
A loading platform device for a road-rail vehicle according to an embodiment of the present invention is shown in Figures 1 and 2. Of these, Figure 1 shows the loading platform device for a road-rail vehicle according to the embodiment (hereinafter simply referred to as the loading platform device) in a state before the platform doors are loaded as equipment to be transported and the slope plates are deployed, and Figure 2 shows the loading platform device for a road-rail vehicle in a state after the slope plates are deployed.

The loading platform device 10 of this embodiment is configured to be mountable on the loading platform of a road-rail vehicle, and includes a base plate 11 in the shape of a rectangular flat plate that is slightly smaller than the loading platform of the road-rail vehicle, and fence-like handrails 12A, 12B, 12C, and 12D, each about 1 m high, erected along three of the four sides of the base plate 11 except for one long side. The base plate 11 is made of a steel plate or the like, and includes a plurality of fastening portions for detachably fixing it to the loading platform of the road-rail vehicle.
The fastening parts can be formed, for example, by bolts or bolt insertion holes for inserting bolts. Alternatively, the fastening parts can be formed by positioning pins and pin holes to prevent lateral displacement. The handrails 12A to 12D are formed from pipes.

A plurality of equipment fixing portions 13 corresponding to the equipment to be transported (platform doors in this embodiment) are provided on the upper surface of the base plate 11. The equipment to be transported is not limited to platform doors. For example, the equipment to be transported may include a carrier on which the platform doors are placed and moved when they are lowered at the destination station. Also, the equipment fixing portions 13 may include an equipment fixing portion for the platform doors and an equipment fixing portion for the carrier on the upper surface of a single base plate 11.
As shown in FIG. 1, a pair of slope plates 14A and 14B are attached to the long side of the base plate 11 on which the handrails 12A to 12D are not provided by hinges H so as to be rotatable about their lower ends.

In the loading platform device 10 of this embodiment, the length of the slope plates 14A, 14B is set to approximately 1 m to accommodate the differences in platform height between stations, and the height of the handrails 12A-12D erected on the base plate 11 side is accordingly set to the same length as the slope plates 14A, 14B. As a result, when the slope plates 14A, 14B are rotated and erected as shown in Figure 1, the height of the slope plates 14A, 14B and the height of the handrails 12A-12D are the same. Furthermore, by setting the length of the slope plates 14A, 14B to approximately 1 m, which is sufficiently longer than the size of the gap between the side of the road-rail vehicle and the platform, when the slope plates are tilted so that their tips touch the platform, a slope with a gentle incline of approximately 10 degrees can be formed, as shown in Figure 3.

As shown in FIG. 1, a long rubber sheet 16 is attached to the back surface of the slope plates 14A, 14B when installed on the platform, in a direction parallel to the platform, in order to protect the platform.
As shown in Figure 2, fence-like handrails 15A and 15B made of pipes are erected on the outer edges of the slope plates 14A and 14B, and a pair of dampers 17A and 17B are provided between the center of the inner side of the slope plates 14A and 14B and the edge of the base plate 11 to reduce the impact when the slope plates 14A and 14B are tilted.

The handrails 15A, 15B are approximately the same height as the handrails 12A-12D on the loading platform side, and unlike the handrails of the bridging device in Cited Document 1, they are fixed so that they cannot be folded inward. This configuration prevents the handrails from wobbling and increases safety. Furthermore, when the slope plates 14A, 14B are raised, the handrails 15A, 15B rotate 90 degrees toward the loading platform, with the inner vertical pipes coming into contact with the top surface of the base plate 11, preventing the slope plates 14A, 14B from tipping inward.

In addition, similar to known pole stands for erecting poles, a pair of short pipes (sockets) that can engage with pipes can be fixed to the edges of the slope plates 14A, 14B at a specified distance, and the lower ends of the handrails 15A, 15B can be fitted into the sockets made of these short pipes, with pins inserted from the outside to prevent them from coming loose. Even with this configuration, the handrails can be prevented from wobbling, unlike handrails that are attached with hinges or the like so that they can be folded inward.

Furthermore, as shown in Figure 3, U-shaped support pipes 12a and 12d are provided on the upper parts of the vertical pipes on the open sides of handrails 12A and 12D, and square-shaped locking frames 20A and 20B made of pipes are attached to these support pipes 12a and 12d by connecting fittings 19A and 19B so that they can pivot horizontally. These locking frames 20A and 20B can be fixed in positions that are flush with the handrails 12A and 12D, or at right angles to the surface of the handrails 12A and 12D.

As a result, when the lock frames 20A, 20B are positioned flush with the handrails 12A, 12D, they function to prevent falls by closing the gap that forms between the top of the handrails 12A, 12D and the top of the handrails 15A, 15B of the slope plates 14A, 14B when the slope plates 14A, 14B are tilted onto the platform. When the lock frames 20A, 20B are positioned perpendicular to the above, they come into contact with the back (outer surface) of the upright slope plates 14A, 14B, thereby functioning as a stopper to prevent the slope plates 14A, 14B from tilting outward.

Furthermore, as shown enlarged in Figure 4, anti-tilt rods 18 are provided between the center of the outer side of the slope plates 14A, 14B and the side edge of the base plate 11. Note that the handrails 12A are not shown in Figure 4. Also shown is a state in which a carrier is installed instead of platform doors.
This anti-tip rod 18 is rotatably attached at its base end on the base plate 11 side by a pin connection, and at its tip is provided an engaging portion (e.g., a hook or pin) that can be engaged and disengaged with a locking portion (e.g., a metal fitting with a pin hole) on the side of the slope plates 14A, 14B.The engaging portion at the tip is configured to be disengaged from the locking portion and then rotated until it is horizontal, allowing it to be placed on the top surface of the base plate 11.

FIG. 5 shows a plan view of the loading platform device 10 of this embodiment with the slope plates 14A and 14B unfolded.
5, in the loading platform device 10 of this embodiment, the base plate 11 is configured by arranging four rectangular plates and connecting their ends with strip-shaped connecting plates 31A to 31D. In addition, on the upper surface of the base plate 11, a plurality of equipment fixing portions 13 are provided at appropriate intervals and have a shape corresponding to the shape of the bottom of the platform door to be transported, for installing the platform door to immobilize it.

6 to 8 show specific examples of the support pipes 12a, 12d, the lock frames 20A, 20B, and the connecting fittings 19A, 19B.
6A, the support pipe 12a (12d) is composed of a V-shaped upper pipe 21a and an L-shaped lower pipe 21b, with a small-diameter section 21c formed at the upper end of the vertical section of the lower pipe 21b, and a substantially square-prism-shaped locking section 21d formed by cutting the circumferential surface of a cylinder at four orthogonal planes at the midpoint of the vertical section. Furthermore, flanges 21e, 21f that serve as stoppers are provided at the bottom of the square-prism-shaped locking section 21d and at the lower end of the upper pipe 21a.

Connecting fitting 19A (19B) is a trapezoidal block with two holes 19a, 19b that penetrate vertically. The vertical portion of lock frame 20A (20B) is inserted into one of the holes 19b, connecting them immovably at an intermediate height. A complementary pipe 22 with a short overall length and an outer diameter slightly smaller than the inner diameter of hole 19a is inserted into the other hole 19a. The small-diameter portion 21c of the lower pipe 21b is inserted into complementary pipe 22, which then passes through hole 19a and its upper end projects upward from connecting fitting 19A (19B) and fits into the lower part of upper pipe 21a, resulting in the configuration shown in Figure 6(B).

Figure 7(A) shows the structure of the connecting fitting 19A (19B) in the state shown in Figure 6(B) as cross-sectioned along a vertical plane passing through the center line of the pipe. Figure 7(B) shows the cross-section taken along line B-B in Figure 7(A), and Figure 7(C) shows the cross-section taken along line C-C in Figure 7(A).
7(B) and 7(C), the hole 19b of the connecting fitting 19A (19B) has a circular upper cross-section and a rectangular lower cross-section. The diameter of the circular upper half is smaller than the length of one side of the rectangular lower cross-section, and the lower half of the complementing pipe 22 is inserted into this circular portion.

The complementary pipe 22 is provided as described above because, without it, when the connecting fitting 19A (19B) is moved upward and the square cross-section portion of the hole 19b comes out of the square pillar-shaped locking portion 21d of the support pipe 12a (12d), a gap will form between the small diameter portion 21c of the lower pipe 21b, causing rattling. Furthermore, the next time the connecting fitting 19A (19B) is moved downward, it will be difficult for the square cross-section portion of the hole 19b to fit into the square pillar-shaped locking portion 21d of the support pipe 12a (12d).

Because the support pipe 12a (12d), lock frame 20A (20B), and connecting fitting 19A (19B) have the above-described structure, when the upper part of lock frame 20A (20B) is grasped and lifted upward in the state shown in Figure 6(B), connecting fitting 19A (19B) moves upward, and the square cross-section portion of hole 19b disengages from square pillar-shaped engaging portion 21d of support pipe 12a (12d), allowing lock frame 20A (20B) to be rotated horizontally as shown in Figure 8(A).

Then, when the lock frame 20A (20B) is rotated 90 degrees counterclockwise horizontally and then lowered, the square cross-section portion of the hole 19b of the connecting fitting 19A (19B) fits into the square pillar-shaped engaging portion 21d of the support pipe 12a (12d), and the lock frame 20A (20B) becomes perpendicular to the support pipe 12a (12d), as shown in Figure 8 (B).
Furthermore, because the rectangular cross-sectional portion of hole 19b fits into square pillar-shaped engaging portion 21d of support pipe 12a (12d), lock frame 20A (20B) is locked and cannot be rotated horizontally even if an attempt is made to do so. Also, in the state shown in Figure 8(B), if the upper portion of lock frame 20A (20B) is grasped and lifted upward, rotated 90 degrees clockwise, and then lowered, lock frame 20A (20B) will be locked in the state shown in Figure 6(B).

Although the above describes an embodiment of the present invention, the present invention is not limited to the above embodiment. For example, in the above embodiment, the connecting fittings 19A, 19B have holes 19b that are circular in the upper half and square in the lower half, and the lower pipes 21b of the locking frames 20A, 20B have rectangular prism-shaped engaging portions 21d, forming a locking mechanism that can lock at positions that differ by 90 degrees when the two are fitted together. However, it is also possible to provide a mechanism in which pin holes are formed at 90-degree intervals in the circumferential direction in corresponding positions on the connecting fittings 19A, 19B and the locking frames 20A, 20B, and a locking mechanism is provided in which pins are inserted while the pin holes are aligned.

In addition, in the above embodiment, it has been explained that fence-like handrails 12A to 12D made of pipe material are provided on the edges of three sides of the base plate 11 installed on the loading platform of the road-rail vehicle, excluding the platform side, but plate-like fences may be provided instead of handrails.
Furthermore, in the above embodiment, an example was described in which platform doors installed on the loading platform of a rail-road vehicle are transported to a station platform, but it goes without saying that the present invention can also be used to remove and transport platform doors that have already been installed on a platform.
Furthermore, in the above embodiment, the present invention has been described as being applied to a loading platform device that is installed on the loading platform of a road-rail vehicle and transports equipment, but the present invention is not limited to this and can also be used to construct a loading platform device that can be mounted on a maintenance vehicle.

10 Loading platform device 11 Base plate 12A to 12D Loading platform side handrail (loading platform side fence body)
12a, 12d Support pipe 13 Equipment fixing part 14A, 14B Slope plate 15A, 15B Slope side handrail (slope side fence body)
16 Rubber sheet 17A, 17B Damper 18 Anti-tilt rod 19A, 19B Connecting fitting 20A, 20B Lock frame

Claims (6)

A loading device installed on the loading platform of a railroad vehicle for loading equipment or materials onto or removing them from a station platform,
A base plate installed on the loading platform of the road-rail vehicle,
A loading platform side fence erected on the edge of the base plate excluding the station platform side;
a slope plate having a length longer than the width of the gap between the side edge of the loading platform of the road-rail vehicle and the edge of the station platform, one side of which is rotatably attached to the edge of the base plate on the station platform side via a hinge;
A pair of slope side fences provided on both sides of the slope plate;
wherein the base plate is configured to be fixed to and detachable from the loading platform of the road-rail vehicle. The loading platform device for a road-rail vehicle described in claim 1, characterized in that the upper surface of the base plate is provided with multiple equipment fixing sections on which equipment to be carried in or out can be immobilized. A loading platform device for a road-rail vehicle as described in claim 1 or 2, characterized in that a damper is provided between the slope plate and the base plate. A loading platform device for a road-rail vehicle as described in any one of claims 1 to 3, characterized in that the upper edge of the loading platform side fence on the station platform side is provided with a frame that can rotate horizontally and can be fixed so as not to rotate in two directions: perpendicular to the edge of the station platform and parallel to the edge of the station platform; the frame acts as a stopper and prevents the loading platform from falling off, and when fixed in the direction perpendicular to the edge of the station platform, the frame protrudes longer than the width of the gap between the side of the loading platform of the road-rail vehicle and the edge of the station platform. The loading platform side fence is made of a pipe material,
The frame for preventing falling off and serving as a stopper is connected to the loading platform side fence so as to be movable up and down by a connecting fitting having a through hole through which a pipe material of the loading platform side fence can be inserted,
a first hole having a rectangular cross section is formed at a lower portion of the through hole, and a second hole having a circular cross section and a diameter smaller than the length of one side of the first hole is formed at an upper portion of the through hole so as to be continuous with the first hole;
5. A loading platform device for a road-rail vehicle according to claim 4, characterized in that the vertical pipe material of the loading platform side fence is provided with a square pillar- shaped locking portion into which the square hole can be fitted. A loading platform device for a road-rail vehicle as described in any one of claims 1 to 5, characterized in that the lower end of the slope side fence is fixed non-rotatably to the slope plate.