JP6300887B1 - Speed limit display - Google Patents

Abstract

A speed limit display device capable of switching the speed limit display safely and quickly without an operator entering the side of a track. A slow signal board 3 is attached in an outward projecting manner, and a window 6 is formed on a front wall 5A, and a plurality of speed limits S that are switched to selectively correspond to the window 6 are provided. A speed display box 5 for installing on the side of a track having a rotating body 10 on which is displayed, an operation box 9 having a handle portion 8 and installed in a safe area away from the track, and a handle portion 8 of the operation box 9 The rotation transmission flexible cable 7 for transmitting the rotation of the rotation to the rotating body 10 of the speed display box 5 is provided. [Selection] Figure 1

Description

  The present invention relates to a speed limit display device.

  Conventionally, when track construction is performed, a slow warning signal is installed at a predetermined distance away from the starting point of the construction section upstream of the train traveling direction, and a slow signal is installed between the lines at the starting point of the construction section. The train crew is instructed to slow down the construction section (see Patent Document 1).

JP 2008-215938 A

As shown in FIG. 9, the conventional slow speed warning signal device 49 has a speed display board 45 displaying a speed limit speed S in a construction section with a column having a slow speed warning signal plate 47 attached to the upper end. It was attached to the middle height position of the column with bolts and nuts. Further, the conventional slow speed signal 48 stands with a column having a slow signal plate 46 at the upper end, and a speed display plate 45 on which the speed limit S for slowing down in the construction section is displayed by bolts and nuts. It was installed at an intermediate height position.
However, the speed limit S at the time of track construction is set to a plurality of stages of 25 km / h, 45 km / h, 65 km / h, 80 km / h, for example. It was necessary to replace the speed display plate 45 at intervals of ˜60 minutes. Since the worker M enters the vicinity of the track R for the replacement work of the speed display board 45, 5 to 6 people including the guard are required in addition to the worker M. In addition, the work between the lines is necessary. Was dangerous. In addition, it takes several minutes to replace one speed display plate 45, and there is a disadvantage that the working efficiency is poor. In addition, since the column is pushed up against the ground, there is a possibility that the train may fall down or be blown away by the strong wind pressure when the train passes.

  Therefore, an object of the present invention is to provide a speed limit display device capable of switching the speed limit display safely and quickly without an operator entering the side of the track.

In the speed limit display device according to the present invention, a slow signal plate is attached in an outward projecting shape, a window portion is formed on the front wall portion, and a plurality of switches are selected to selectively correspond to the window portion. A speed display box for installing on the side of the track having a rotating body displaying a speed limit, an operation box having a handle portion and installed in a safety area away from the track, and rotation of the handle portion of the operation box , A rotation transmission flexible cable for transmitting to the rotating body of the speed display box, the speed display box indicating the speed limit of the rotating body visible from the window The speed display box further includes a worm shaft / worm wheel that transmits rotation in one direction from the rotation transmission flexible cable to the rotating body. Unexpected Are those configured to suppress rolling.

In addition, a slow-down notice signal plate is attached in an outward projecting manner, a window is formed on the front wall, and a plurality of speed limits that are switched to selectively correspond to the window are displayed. A speed display box for installation alongside the track having a body, an operation box having a handle portion and installed in a safe area away from the track, and rotation of the handle portion of the operation box, A rotation transmission flexible cable for transmitting to the rotating body, and the speed display box is visible from the side of the auxiliary display section that indicates the speed limit of the rotating body that is visible from the window section. Furthermore, the speed display box has a worm shaft / worm wheel that transmits rotation in one direction from the rotation transmission flexible cable to the rotating body so as to suppress unexpected rotation of the rotating body. Ni Those which are.
In addition, the operation box includes a display speed confirmation plate that is interlocked and connected so as to transmit the rotation of the handle part and that can confirm the speed limit of the rotating body that is visible from the window part.

  According to the speed limit display device of the present invention, the operator can operate the handle portion in a safe area away from the track to switch the display of the speed limit of the speed display box, thereby ensuring the safety of the operator. In addition, the display of the speed limit can be quickly switched in a few seconds to a few dozen seconds, and the working time can be shortened. Even one operator can perform display switching work. The speed display box can be installed stably without being blown by the wind or falling down. No power source is required, and the rotation (force) of the handle portion of the operation box can be reliably transmitted to the rotating body of the speed display box by the mechanical structure, and the structure can be simplified.

It is the perspective view which showed one Embodiment of this invention. It is the perspective view which showed other embodiment of this invention. It is a front view which shows the principal part of the speed limit display apparatus of this invention. It is a cross-sectional side view of a speed display box. It is a section top view of a speed display box. It is a cross-sectional side view of an operation box. It is a cross-sectional plan view of an operation box. It is a perspective view which shows the use condition of the speed limit display apparatus of this invention. It is a perspective view for demonstrating the conventional slow speed signal and a slow speed warning signal.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
As shown in FIG. 8, the speed limit display device of the present invention is provided in a speed display box 5 for installation alongside a track to which a slow signal board 3 or a slow warning signal board 4 is attached, and in a safety area E away from the track R. An operation box 9 to be installed, and a rotation transmission flexible cable 7 connected to the operation box 9 and the speed display box 5 are provided. In the present invention, the safety area E is a range set by a railway company. For example, it is a region away from the track R by a predetermined distance or more, and specifically, the distance from the track center is 6.65 m or more.

As shown in FIGS. 1 and 2, the speed display box 5 has a rectangular parallelepiped case 19 made of a metal such as stainless steel. In FIG. 1, a circular slow signal board 3 projects upward. Is attached. In FIG. 2, a triangular slow-down advance warning signal plate 4 is attached so as to protrude upward.
Speed display box 5, from the top of FIG. 1, the slow-speed signal plate 3 height H ₁ to the ground surface of the case portion 19, from the top of FIG. 2 crawl warning signal plate 4 to the ground surface of the case portion 19 height _{H 2} is set to 800Mm～950mm. The weight of the speed display box 5 is set to 40 kg or less. The speed display box 5 is provided with four carrying handles 21 at the upper end edges of the side wall parts 5B and 5B (of the case part 19), and eyebolts 22 are attached at four locations near the lower end edge.

As shown in FIGS. 1 to 5, a rectangular window portion 6 is formed on the front wall portion 5 </ b> A of the speed display box 5, and a rotating body 10 is provided so as to be visible from the window portion 6. The body 10 is pivotally attached around the horizontal axis L (along the left-right direction).
The rotating body 10 has a rectangular parallelepiped shape, and four types of speed display plates displaying different speed limits S are attached to the first display surface 11, the second display surface 12, and the third display surface. 13. A fourth display surface 14 is sequentially provided in the rotation direction. One of the first display surface 11, the second display surface 12, the third display surface 13, and the fourth display surface 14 selectively corresponds to the window 6, and the rotating body 10 rotates as indicated by an arrow A. By doing so, the speed limit S (visible from the window 6) is switched one after another. The rotating body 10 is “25 (km / h)” on the first display surface 11, “45 (km / h)” on the second display surface 12, and “65 (km / h) on the third display surface 13. ”,“ 80 (km / h) ”or the like is displayed on the fourth display surface 14.

As shown in FIGS. 1, 2, 6, and 7, the operation box 9 includes a casing 30 with a lid 30 </ b> A, and a handle portion 8 that rotates around a vertical axis L ₈ in the casing 30. The pair of bevel gears 31A and 31B rotating in conjunction with the handle portion 8, the shaft 32 having one end linked to the bevel gear 31B, the worm 33 fixed to the intermediate position of the shaft 32, and the worm meshing with the worm 33 A wheel 34 and a display speed confirmation plate 35 linked to the worm wheel 34 are provided. The display speed confirmation plate 35 is provided with four display surfaces 35a, 35b, 35c, and 35d. On the display surfaces 35a, 35b, 35c, and 35d, four types of speed limit S of the rotating body 10 are displayed. . An indication member 36 is attached to the inner wall surface of the casing 30 to indicate one of the display surfaces 35a, 35b, 35c, and 35d of the display speed confirmation plate 35. As shown in FIG. 7, the shaft 32 and the pivot shaft of the worm wheel 34 are supported by a plurality of bearing members (pillow units) and attached to the casing 30, but in FIG. Is omitted.

The flexible cable 7 is provided to transmit the rotation of the handle portion 8 of the operation box 9 to the rotating body 10 of the speed display box 5.
As shown in FIGS. 6 and 7, the flexible cable 7 has a bendable linear portion 40 and an end portion of the linear portion 40 fixed to the case portion 19 of the speed display box 5 and the casing 30 of the operation box 9. The linear portion 40 includes a rotatable inner wire 42 and a non-rotating outer tube 43 that covers the inner wire 42. One mounting portion 41 is fixed to the side wall surface of the casing 30 of the operation box 9, and the end portion of the inner wire 42 is connected to the shaft 32 (the other end 32 b thereof) via the coupling 44.
In addition, the flexible cable 7 is set to 8-12 m in total length. More preferably, it is 10 m.

As shown in FIGS. 4 and 5, the other attachment portion 41 of the flexible cable 7 is fixed to the rear surface (rear) wall portion 5 </ b> C of the speed display box 5, and the end of the inner wire 42 is connected to the speed display box 5. It is connected to a connecting shaft 23 provided inside.
The speed display box 5 includes a worm shaft 17 provided at the tip of the connecting shaft 23, a worm wheel 18 that meshes with the worm shaft 17, and a sprocket gear (chain gear) 24 that rotates coaxially with the worm wheel 18. And a chain 25 that is hung on the sprocket gear 24 and a sprocket gear (chain gear) 26 that is hung on the sprocket gear 24 and rotates coaxially with the rotating body 10.
The worm shaft 17 and the worm wheel 18 are configured to transmit rotation in one direction from the rotation transmission flexible cable 7 side to the rotating body 10 side. That is, it is possible to rotate the sprocket gear 24 by applying a rotational force to the connecting shaft 23, but conversely, even if a rotating force is applied to the sprocket gear 24, the connecting shaft 23 does not rotate. With this configuration, the rotation of the rotating body 10 due to wind pressure or other external force is prevented, so that the display of the speed limit S that can be seen from the window 6 does not change unexpectedly.

As shown in FIGS. 1 and 2, the speed display box 5 is provided with an auxiliary display section 20 that indicates the speed limit S of the rotating body 10 that can be seen from the window section 6 so as to be visible from the side. The auxiliary display unit 20 includes a disk-shaped auxiliary display plate 16 disposed outside the side wall portion 5B, and an instruction unit 27 provided to point to one place of the auxiliary display plate 16.
As shown in FIG. 3, the rotating body 10 has pivot shafts 15, 15 projecting outward in the lateral direction, and the pivot shafts 15, 15 are pivotally attached to the side walls 5 </ b> B, 5 </ b> B. The auxiliary display board 16 is fixed to the outer end (tip) of the pivot shaft 15 and rotates integrally with the rotating body 10.
As shown in FIG. 4, the auxiliary display board 16 has numbers corresponding to a plurality of speed limits S displayed on the rotary body 10 at a central angle of 90 ° on the outer surface. Specifically, four numbers “25”, “45”, “65”, and “80” are described, where “25” is the direction of the first display surface 11 of the rotating body 10 and “45” is the first number. In the direction facing the second display surface 12, “65” is disposed in the direction facing the third display surface 13, and “80” is disposed in the direction facing the fourth display surface 14.
That is, the number on the auxiliary display board 16 pointed to by the instruction unit 27 corresponds to the speed limit S of the rotating body 10 visible from the window 6, and displays the speed limit S of the rotating body 10 from the front of the speed display box 5. Even when it cannot be confirmed, the speed limit S displayed on the window 6 can be determined by looking at the numbers on the auxiliary display board 16 from the side.

  The worm shaft 17 and the worm wheel 18 shown in FIG. 4 have a reduction gear ratio set to 1/20. By setting the reduction gear ratio in this manner, there is an advantage that the handle portion 8 of the operation box 9 can be rotated lightly with a small force, and the operability can be improved. Further, the rotation of the handle portion 8 is transmitted to the connecting shaft 23 inside the speed display box 5 by the flexible cable 7 and connected to the worm shaft 17 and the worm wheel 18 immediately before the rotating body 10. The twisting load applied to the inner wire 42 of the flexible cable 7 is reduced. For example, when the handle portion 8 of the operation box 9 is rotated 5 times, the rotating body 10 is rotated 90 °, and the speed limit S that can be seen from the window portion 6 is switched.

  As shown in FIG. 7, in the operation box 9, by rotating the handle portion 8, the rotation is transmitted to the display speed confirmation plate 35 via the worm 33 and the worm wheel 34, and the rotation visible from the window portion 6. Corresponding to the speed limit S of the body 10, one of the plurality of display surfaces 35 b provided on the display speed confirmation plate 35 is configured to be pointed by the instruction member 36. That is, when the handle portion 8 is turned, the speed limit S of the rotating body 10 that can be seen from the window portion 6 can be confirmed by looking at the display speed confirmation plate 35 in the operation box 9. However, the twist of the inner wire 42 of the flexible cable 7 may cause a deviation in the ratio of the rotational speeds of the handle portion 8 and the rotating body 10, so the display of the speed limit S is confirmed by the display speed confirmation plate 35. It is preferable to give priority to the auxiliary display unit 20 of the speed display box 5.

The use method (action) of the speed limit display device of the present invention described above will be described.
As shown in FIG. 8, the speed display box 5 is installed on the side of the track R, and the operation box 9 is installed in the safety area E away from the track R. In FIG. 8, the outer region than the two-dot chain line Z is defined as a safety region E.
The speed display box 5 sends a signal of slowing down in the construction section to the crew of the traveling train by the slow notice signal board 4 and the slowing signal board 3, and displays the speed limit S in the window 6, and the construction section Inform the speed of slowing down. A pile is driven into the eyebolt 22 provided on the side wall portion 5B of the speed display box 5, and the speed display box 5 is firmly fixed so as not to be blown or fallen by the strong wind pressure received when the train passes.

  When switching the display of the speed limit S in the speed display box 5, the handle portion 8 of the operation box 9 is rotated to apply a rotational force to the rotating body 10 of the speed display box 5 through the flexible cable 7. . At this time, the worker M can operate the handle portion 8 in a safety area E with a small distance from the track R and with little danger. Since the safety of the worker M is ensured, it is not necessary to keep a lookout when switching the speed limit S, and one person can work. In addition, the handle portion 8 can be rotated lightly with a small force, and the rotation speed of the handle portion 8 can be reduced to about several times, so that the speed limit S can be quickly switched in several seconds to several tens of seconds. In addition, the speed display box 5 does not display electricity, and rotation is transmitted from the operation box 9 to the speed display box 5 by mechanical means using the flexible cable 7. Accordingly, the rotating body 10 rotates only by manual operation of the handle portion 8 without requiring a power source.

  In the present invention, the design can be changed. For example, the auxiliary display unit 20 of the speed display box 5 has an auxiliary display plate 16 disposed inside the side wall 5B, and a small hole is cut out in the side wall 5B. It may be formed so that the number corresponding to the speed limit S displayed on the window 6 can be seen from a small hole (not shown).

  As described above, in the speed limit display device according to the present invention, the slow signal plate 3 is attached in an outward projecting manner, and the window portion 6 is formed on the front wall portion 5A. Is installed in a safety area E that has a speed display box 5 for installing on the side of the track that has a rotating body 10 that displays a plurality of speed limits S that are switched to correspond to the And the rotation transmission flexible cable 7 for transmitting the rotation of the handle portion 8 of the operation box 9 to the rotating body 10 of the speed display box 5. By operating the handle portion 8 in the safety region E away from the track R, the display of the speed limit S in the speed display box 5 can be switched, and the safety of the worker M can be ensured. Further, the display of the speed limit S can be quickly switched in a few seconds to a few tens of seconds, and the working time can be shortened. Even one worker M can perform display switching work. The speed display box 5 can be stably installed without being blown by the wind or falling down. A power source is unnecessary, and the rotation of the handle portion 8 of the operation box 9 can be reliably transmitted to the rotating body 10 of the speed display box 5 by the mechanical structure, and the structure can be simplified.

  In addition, a slow-speed warning signal plate 4 is provided in an outwardly projecting manner, and a window 6 is formed on the front wall 5A, and a plurality of speed limit S that are switched to correspond to the window 6 alternatively. A speed display box 5 for installing on the side of a track having a rotating body 10 on which is displayed, an operation box 9 having a handle portion 8 and installed in a safety area E away from the track R, Since the rotation transmission flexible cable 7 for transmitting the rotation of the handle portion 8 to the rotating body 10 of the speed display box 5 is provided, the handle portion is provided in the safety region E where the worker M is away from the track R. 8, the display of the speed limit S in the speed display box 5 can be switched, and the safety of the worker M can be ensured. Further, the display of the speed limit S can be quickly switched in a few seconds to a few tens of seconds, and the working time can be shortened. Even one worker M can perform display switching work. The speed display box 5 can be stably installed without being blown by the wind or falling down. A power source is unnecessary, and the rotation of the handle portion 8 of the operation box 9 can be reliably transmitted to the rotating body 10 of the speed display box 5 by the mechanical structure, and the structure can be simplified.

  Further, since the speed display box 5 is provided with an auxiliary display section 20 that indicates the speed limit S of the rotating body 10 visible from the window section 6 so that it can be viewed from the side, the speed display box 5 Even when the display of the speed limit S of the rotating body 10 cannot be confirmed from the front side, the speed limit S displayed on the window 6 can be determined by looking at the auxiliary display unit 20 from the side. Therefore, it is not necessary to install the operation box 9 in front of the speed display box 5, and the worker M can operate the handle unit 8 while looking at the auxiliary display unit 20 from the side in a safe place.

  The speed display box 5 has a worm shaft 17 and a worm wheel 18 that transmit the rotation from the rotation transmission flexible cable 7 to the rotating body 10 in one direction, and suppresses the unexpected rotation of the rotating body 10. Thus, the display of the speed limit S visible from the window portion 6 is not changed unexpectedly, and the rotating body 10 can be rotated only by operating the handle portion 8. The handle portion 8 of the operation box 9 can be rotated with a small force, and the operability can be improved. Moreover, the twisting load of the flexible cable 7 can be reduced.

DESCRIPTION OF SYMBOLS 3 Deceleration signal board 4 Deceleration notice signal board 5 Speed display box 5A Front wall part 6 Window part 7 Flexible cable 8 Handle part 9 Operation box 10 Rotating body 17 Warm shaft 18 Warm wheel 20 Auxiliary display part
35 Display speed confirmation board S Speed limit R Track E Safety area

Claims (3)

The slow signal board (3) is attached in an outward projecting manner, and a window part (6) is formed on the front wall part (5A), so that it can be switched to selectively correspond to the window part (6). A speed display box (5) for installing a trackside having a rotating body (10) on which a plurality of speed limits (S) are displayed;
An operation box (9) having a handle portion (8) and installed in a safety area (E) away from the track (R);
A rotation transmitting flexible cable (7) for transmitting the rotation of the handle portion (8) of the operation box (9) to the rotating body (10) of the speed display box (5) ;
The speed display box (5) is provided such that an auxiliary display section (20) for instructing a speed limit (S) of the rotating body (10) visible from the window section (6) is visible from the side. ,
Furthermore, the speed display box (5) has a worm shaft (17) and a worm wheel (18) for transmitting rotation in one direction from the rotation transmission flexible cable (7) to the rotating body (10), A speed limit display device configured to suppress unexpected rotation of the rotating body (10) . A slow-down notice signal plate (4) is attached in an outward projecting manner, and a window portion (6) is formed on the front wall portion (5A) so as to selectively correspond to the window portion (6). A speed display box (5) for installing on the side of the track having a rotating body (10) on which a plurality of speed limits (S) to be replaced are displayed;
An operation box (9) having a handle portion (8) and installed in a safety area (E) away from the track (R);
A rotation transmitting flexible cable (7) for transmitting the rotation of the handle portion (8) of the operation box (9) to the rotating body (10) of the speed display box (5) ;
The speed display box (5) is provided such that an auxiliary display section (20) for instructing a speed limit (S) of the rotating body (10) visible from the window section (6) is visible from the side. ,
Furthermore, the speed display box (5) has a worm shaft (17) and a worm wheel (18) for transmitting rotation in one direction from the rotation transmission flexible cable (7) to the rotating body (10), A speed limit display device configured to suppress unexpected rotation of the rotating body (10) . The operation box (9) is interlocked and coupled so that the rotation of the handle portion (8) is transmitted, and the speed limit (S) of the rotating body (10) visible from the window portion (6) can be confirmed. The speed limit display device according to claim 1 or 2, further comprising a display speed confirmation plate (35) .

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