JP2011017243A - Track-girder fall preventing device for straddling-type monorail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a track-girder fall preventing device for a straddling-type monorail, which can further enhances safety in earthquakes.SOLUTION: The track girder fall preventing device prevents fall of the track girder 1 for the straddling type monorail from a bridge pier. The device is configured to stretch a string-like connection member 6 between a pair of joint plates 4A, 4B faced with each other on both guide faces 2b at the front-and-rear ends of the track girder 1. The connection member 6 exhibits an annular shape with both ends of the string-like members connected together, is hooked on hooking grooves 44 provided to both the joint plates 4A, 4B and is arranged between the guide faces 2b of the track girder 1 and the joint plates 4A, 4B, to be secured to the track girder 1.

Description

  The present invention relates to a fall prevention device for a straddle-type monorail track girder.

  The track girder of the straddle-type monorail is supported by the support at the end of the track girder that is abutted with the adjacent track girder. Since the track girder fall prevention device in the straddle-type monorail described in Patent Documents 1 and 2 cannot secure a sufficient installation space for the track girder straddling the monorail vehicle body, the support portions that support the track girder are connected to each other. Connected with cables.

JP 2004-68395 A JP 2007-120290 A

  Since the fall prevention device of each of the above-mentioned patent documents is installed in the support portion, it finally operates when the support portion and the anchor that fixes the support portion to the support are damaged. In addition, depending on the displacement direction of the track girder, the cable may be twisted at the time of operation, resulting in an unstable state. Further, if a displacement occurs between the support portions in the event of an earthquake or the like, unexpected stress may act on the support portions from the cable. For this reason, the fall prevention device which can improve the safety | security at the time of an earthquake more is desired.

  The object of the present invention has been made in view of such a problem, and is to provide a fall prevention device for a straddle-type monorail track girder that can further enhance safety during an earthquake.

In order to achieve such an object, the fall prevention device for a straddle-type monorail track girder according to the present invention is a straddle that is supported by a support on a bridge pier and is connected to the adjacent track girder with its ends abutted against each other. Type monorail track girder fall prevention device, comprising a connecting member that is stretched between the opposing track girders on a latching portion provided at the end, the connecting member being The surface is covered with an elastomer and integrated with the elastomer.
Further, the present invention is characterized in that the connecting member is configured to be endless in an annular shape by weaving ends of fiber ropes together.
The present invention also includes a structural example characterized in that a plurality of connecting members having different ring sizes are arranged between both the orbit beams.
Further, the present invention is characterized in that the elongation of the connecting member having a small ring is larger than the elongation of the connecting member having a large ring.
Further, according to the present invention, the latching portion is formed on a pair of seam plates provided on both side surfaces of the end portions of both the track girders so as to face each other, and the connecting member includes the side surface and the seam. It arrange | positions between plates and is fixed to the said track girder, It is characterized by the above-mentioned.
Further, in the present invention, the joint plate is arranged so that the finger portions extending in a comb-like shape from one edge of the main body are engaged with the finger portions of the joint plate facing each other, and the hook portion A thin portion that is formed on the main body and accommodates the connecting member by extending the end portion to the one edge located between the adjacent finger portions, and a hooking portion of the connecting member that protrudes from the thin portion. It is characterized by being comprised from the latching protrusion which can be stopped.
Further, according to the present invention, the seam plate is configured to be thinner than the main body, and the finger portion of the seam plate facing the finger portion extending from one edge portion of the main surface side of the main body in a comb-tooth shape. And the latching portion is composed of a single groove formed on the other main surface of the main body with both ends extending to the one edge.
Further, the present invention is characterized in that the latching portion is formed on a pair of sole plates provided facing each other on the lower surfaces of the end portions of both the track girders.

  According to the present invention, the safety at the time of an earthquake can be improved by directly connecting track girders with a connecting member and operating the fall prevention device based on the displacement between the track girders.

It is a figure which shows the track girder provided with the fall prevention apparatus of one Embodiment of this invention, (a) is a cross-sectional view, (b) is a right view. It is a figure which shows the guide surface joint board with which a track | girder girder equips a front-end part, (a) is from the outer side, (b) is from the inner side, (c) is the figure seen from the lower side. It is a figure which shows the base which supports a guide surface joint board to a girder main body, (a) is a figure seen from the outer side, (b) is seen from the rear side, (c) is a figure seen from the lower side. It is a figure which shows the state which attached the guide surface joint board to the base with which a girder body is provided, (a) is the figure seen from the right side, (b) is the figure from the bottom. It is a figure which shows the state which attached the guide surface joint board of the other example to the base with which a girder body is equipped, (a) is a figure seen from the right side, (b) is a figure seen from the lower side, (c) is a figure of (b). It is an enlarged view in the frame A. It is a figure which shows the guide surface joint board of the other example with which a track girder is provided in a front-end part, (a) is the figure seen from the outer side, (b) is seen from the inner side, (c) is the figure seen from the lower side. It is the figure which looked at the state which latched the connection member on the sole plate with which a girder body is provided from the right side.

Embodiments of the present invention will be described below with reference to the drawings.
1A and 1B are views showing a track girder 1 provided with a fall prevention device according to the present embodiment, in which FIG. 1A is a cross-sectional view and FIG.

  The track girder 1 shown in FIG. 1 is supported by a bridge pier with a support (not shown), and the ends of the front track girder 1A and the rear track girder 1B adjacent to each other are abutted. In this example, the track girders 1A and 1B are supported on the lower surface 2c by a movable support at the front end and a fixed support at the rear end, respectively. In the track girders 1A and 1B, the upper surfaces of the girder bodies 2A and 2B are the track surfaces 2a on which the monorail travels, and the left and right side surfaces arranged with the track surfaces in between are the guide surfaces 2b that guide the monorail. . A gap 20 is provided between the rear end surface of the beam body 2A and the front end surface of the beam body 2B. Guide surface joint plates 4 are attached to the front and rear ends of the guide surface 2b of the girder main bodies 2A and 2B via pedestals 5, respectively.

  2A and 2B are views showing the guide surface joint plate 4B provided at the front end of the track girder 1B. FIG. 2A is a view from the outside, FIG. 2B is a view from the inside, and FIG.

  As shown in FIG. 2, the guide surface joint plate 4 </ b> B has a schematic shape in which a plurality of finger portions 42 are extended from a front edge portion of a joint plate main body 41 having a rectangular flat plate shape. The joint plate main body 41 is provided with a plurality of insertion holes 43. In the example shown in the drawing, three insertion holes 43 are arranged at equal intervals along the front edge portion and the rear edge portion of the joint plate main body 41. The insertion hole 43 in the front edge part and the insertion hole 43 in the rear edge part are arranged with their vertical positions shifted from each other.

  Each insertion hole 43 penetrates from the outer surface side to the inner surface side of the joint plate main body 41, and is provided with a reduced diameter portion 43a on the inner surface side. A screw 7 (see FIG. 4) for attaching the guide surface joint plate 4B to the pedestal 5 is inserted into the insertion hole 43, and the head portion 7a of the screw 7 is accommodated in the enlarged diameter portion located outside the reduced diameter portion 43a. To do.

  The finger portion 42 is a flat body extending in a rectangular shape from the front edge of the joint plate main body 41 toward the front, and is formed thinner than the joint plate main body 41, and is substantially equal from the base end portion to the distal end portion. It extends with a wall thickness. In the example shown in the figure, four finger portions 42 are provided at equal intervals on the front edge portion of the joint plate body 41. The uppermost finger part 42 has an upper side flush with the upper side of the joint plate body 41, and a lower corner of the tip has an arc shape when viewed from the outside. In the remaining three finger portions 42, the upper and lower corners of the tip have an arc shape when viewed from the outside, and have a substantially circular tip shape.

  A latching groove 44 for latching the connecting member 6 is provided on the inner surface of the joint plate main body 41. Each latching groove 44 is composed of a groove that extends rearward from the front edge of the joint plate body 41 and then bends and extends to the front edge, and the insertion holes 43 arranged on the front edge side of the joint plate body 41 are provided. It is substantially U-shaped to surround each.

  FIGS. 3A and 3B are views showing a base 5B that supports the guide surface joint plate 4B to the girder body 2B. FIG. 3A is a view from the outside, FIG. 3B is a view from the rear, and FIG. is there. The pedestal 5B includes a pedestal main body 51 having a substantially rectangular flat plate shape, a bent piece 54 extending outward from the rear edge of the pedestal main body 51, and bent forward from the front edge of the pedestal main body 51. The extending piece 52 extends and a fixing plate 56 fixed to the pedestal main body 51 and the bent piece 54 is configured.

  A screw portion 53 to which the fixing bolt 55 is screwed is fixed to the inner surface of the pedestal main body 51. The screw portion 53 has a cylindrical shape, and is fixed to the inner surface of the pedestal main body 51 by welding or the like through the through hole 51a formed in the pedestal main body 51. The fixing bolt 55 is for fixing the pedestal 5 to the track girder 1. The fixing bolt 55 is fixed to the screw portion 53 by being screwed into the screw hole 53 a from the inside with the head portion 55 a facing inward.

  A fixing rod 57 for fixing the pedestal 5 to the track girder 1 is fixed to the rear surface of the bent piece 54. The fixing rod 57 has one end of a round bar-shaped main body fixed to the rear surface of the bent piece 54 by welding or the like, and a head portion 57a provided at the other end faces the rear side.

  The fixing plate 56 has a shape in which one corner of a rectangular flat plate is cut out into a rectangular shape, and includes a plurality of through holes 56a opened on both main surfaces. The fixing plate 56 is fixed to the inner surface of the pedestal main body 51 and the rear surface of the bent piece 54 with the end surface of the notch portion by welding or the like.

  The pedestal 5B has the pedestal main body 51 accommodated in a stepped portion 21 extending rearward from the front edge of the guide surface 2a included in the girder main body 2B, and the screw portion 53, the fixing bolt 55, the fixing plate 56, and the fixing rod 57 are connected to the girder main body. By being embedded in 2B, it is fixed to the girder body 2B. The pedestal 5B fixed to the girder body 2B is configured such that the bent piece 54 is brought into contact with the rear side surface of the stepped portion 21 and the extended piece 52 is brought into contact with the front side surface of the stepped portion 21 so that the pedestal body 51 is brought into contact with the bottom surface of the stepped portion 21. It is mounted on.

  4A and 4B are views showing a state in which the guide surface joint plates 4A and 4B are attached to the bases 5A and 5B included in the girder main bodies 2A and 2B. FIG. 4A is a view from the right side, and FIG. It is.

  As shown in FIG. 4, the guide surface joint plate 4A provided at the rear end portion of the track girder 1A is a guide surface provided at the front end portion of the track girder 1B except for the extending position of the finger portion 42 from the joint plate body 41. It has the same configuration as the joint plate 4B. In the guide surface joint plate 4A, the lowermost finger portion 42 has the lower surface flush with the lower surface of the joint plate main body 41, and each finger portion 42 is connected to the finger portion 42 of the guide surface joint plate 4B. The seam plate body 41 extends rearward from the rear edge of the seam plate body 41 at the same regular intervals. The pedestal 5A provided at the rear end of the track girder 1A has the track girder 1B at the front end except that a bent piece 54 is formed at the front edge of the pedestal main body 51 and an extended piece 52 is formed at the rear edge. It has the same configuration as the pedestal 5B provided in the part.

  The guide surface joint plate 4 </ b> A and the guide surface joint plate 4 </ b> B are fixed to the pedestal 5 so that the finger portions 42 are engaged with each other, and are attached to the girder body 2. Each guide surface joint plate 4 is placed on the base body 51 with the reduced diameter portion 43 a of the insertion hole 43 facing the through hole 51 a of the base body 51, and inserted through the insertion hole 43 from the outside. The screw 7 is screwed into the screw hole 53 a of the screw portion 53 through the through hole 51 a and is fixed to the girder body 2. The screw 7 is accommodated in the insertion hole 43 with the head 7 a abutting against the bottom surface of the enlarged diameter portion of the insertion hole 43. The connecting member 6 is spanned between each latching groove 44 provided on the guide surface joint plate 4A and each latch groove 44 provided on the guide surface joint plate 4B.

  The connecting member 6 has an annular shape in which both ends of one fiber rope formed by weaving fibers such as aramid fiber, polyamide fiber, and polyester fiber are connected. The connecting member 6 is configured to be endless in an annular shape by weaving both ends of one fiber rope together. The length of the connecting member 6 spanned between the girder body 2A and the girder body 2B is such that the girder body 2A and the girder body 2B that apply tension to the connecting member 6 in consideration of the length of the gap 20 and the elongation of the connecting member 6. It is determined based on the amount of displacement between.

  The connecting member 6 is stretched between the guide surface joint plate 4A and the guide surface joint plate 4B. The end of the connecting member 6 on the guide surface joint plate 4B side is accommodated between the base body 51 of the base 5B and the hooking groove 44 and is hooked on the peripheral wall of the hooking groove 44. The withdrawal is regulated. The end of the connecting member 6 on the guide surface joint plate 4A side is also accommodated between the base body 51 and the retaining groove 44 of the base 5A and is the retaining groove 44 in the same manner as the end of the guide surface joint plate 4B side. And the separation from the retaining groove 44 is restricted. The surface of the connecting member 6 is covered with an elastomer 60 integrated by vulcanization molding.

  Due to an earthquake or the like, displacement occurs between the girder body 2A and the girder body 2B, and a gap 20 between the girder body 2A and the girder body 2B is spanned between the girder body 2A and the girder body 2B. When the connecting member 6 extends beyond the length, tension is applied to the connecting member 6 to prevent an increase in displacement between the girder body 2A and the girder body 2B. Further, even when a displacement occurs between the girder body 2A and the girder body 2B in a direction different from the front-rear direction such as up and down, left and right, and circumferential direction, the expansion of the displacement is suppressed by the connecting member 6.

  According to the present embodiment, the connecting member 6 is spanned between the guide surface joint plate 4A and the guide surface joint plate 4B provided at the front and rear ends of the girder body 2, and the girder body 2A and the girder body 2B are directly connected. Since the fall prevention device is configured by connecting, the fall prevention device can be operated based on the displacement between the track girder 1A and the track girder 1B. In addition, the fall prevention device can be operated before breakage of the support portions of the track girders 1A and 1B and the anchors that fix the support portions to the support columns. As a result, safety during an earthquake can be improved.

  Moreover, according to this embodiment, the connection member 6 is spanned between the some guide surface joint board 4A with which the left and right guide surface 2b of the girder body 2 was equipped, and the guide surface joint board 4B. Therefore, it is possible to effectively suppress displacement in the circumferential direction centering on the axial center between the beam body 2A and the beam body 2B.

  Moreover, according to this embodiment, since the connection member 6 is arrange | positioned between the base 5 and the guide surface joint board 4, and is being fixed to the girder main body 2, it can prevent impairing the external appearance of the track girder 1. FIG. Moreover, since the connection member 6 is covered with the elastomer 60, the weather resistance of the connection member 6 can be ensured, and the connection member 6 can be held in a predetermined shape.

  Further, according to the present embodiment, the connecting member 6 is bridged between the girder body 2A and the girder body 2B by using the guide surface joint plate 4 that is detachably attached to the girder body 2 via the base 5. Therefore, the fall prevention device can be attached and detached with a simple operation of replacing the guide surface joint plate 4 with the base 5.

  Moreover, according to this embodiment, the finger part 42 is comprised thinner than the joint plate main body 41, and the edge part of the latching groove 44 is located in the edge of the joint plate main body 41 from which the finger part 42 extends. Even if it does, it does not need to reduce the strength of the finger part 42, and therefore, the shape, forming position, quantity, etc. of the retaining groove 44 can be determined without being affected by the forming position of the finger part 42, etc. .

  In the above-described embodiment, the case where one end of the connecting member 6 is hooked to the hooking groove 44 of the guide surface joint plates 4A and 4B has been described. However, the configuration for hooking the connecting member 6 is arbitrary. It can also be configured like the fall prevention device shown in FIG.

  FIG. 5 is a view showing a fall prevention device configured by attaching guide surface joint plates 8A and 8B to pedestals 9A and 9B included in the girder main bodies 2A and 2B. FIG. 5A is from the right side, and FIG. It is the figure seen from the side. FIG. 6 is a view showing the guide surface joint plate 8B provided at the front end of the track girder 1B. FIG. 6A is a view from the outside, FIG. 6B is a view from the inside, and FIG. is there.

  The fall prevention device shown in FIG. 5 is configured by attaching a guide surface joint plate 8 to a pedestal 9 provided in the girder body 2. As shown in FIG. 6, the guide surface joint plate 8B provided at the front end of the girder body 2B is an outline in which a plurality of finger portions 82 are extended from the front edge portion of the joint plate body 81 having a rectangular flat plate shape. It has a shape and is provided with a plurality of insertion holes 83 as with the guide surface joint plate 8B described above.

  On the inner surface of the seam plate body 81 provided in the guide surface seam plate 8B, instead of the latching groove 44 of the guide surface seam plate 4B, the housing portion 85 formed by thinning the seam plate body 81 and the bottom surface of the housing portion 85 A latching projection 84 is provided so as to project from the projection. The accommodating portion 85 extends from the front edge portion of the joint plate main body 81 located between the adjacent finger portions 82 toward the rear of the joint plate main body 81, and constricts the central portion in the front-rear direction.

  The latching protrusion 84 is provided at the rear end portion of the accommodating portion 85 that is widened, and has a columnar shape that extends from the bottom surface of the accommodating portion 85 toward the inside of the joint plate body 81. A groove formed between the inner peripheral surface of the rear end portion of the accommodating portion 85 and the outer peripheral surface of the latching protrusion 84 extends in an annular shape along the outer peripheral surface of the latching protrusion 84.

  The finger portion 82 provided in the guide surface joint plate 8B has the same shape as the finger portion 42 of the guide surface joint plate 4B in the outer surface and the inner surface view, but is gradually thinned by inclining the inner surface outward toward the tip side. Is formed. The uppermost finger portion 82 has an upper surface flush with the upper surface of the joint plate body 81, and a lower corner portion of the tip has an arc shape when viewed from the outside. In the remaining three finger portions 82, the upper and lower corners of the tip have an arc shape when viewed from the outside, and have a substantially circular tip shape.

  As shown in FIG. 5, the pedestal 9B for supporting the guide surface joint plate 8B to the girder body 2B is similar to the pedestal 5B of the above embodiment, the pedestal body 91, the extension piece 92, the screw portion 93, the bent piece 94, And the bolt 95, but the members corresponding to the fixing plate 56 and the fixing rod 57 are not provided. The guide surface joint plate 8A provided at the rear end portion of the track girder 1A has the same configuration as the guide surface joint plate 8B provided at the front end portion of the track girder 1B except for the extending position of the finger portion 82 from the joint plate body 81. have. The pedestal 9A provided at the rear end of the track girder 1A has the track girder 1B at the front end except that a bent piece 94 is formed at the front edge of the pedestal main body 91 and an extension piece 92 is formed at the rear edge. It has the same configuration as the pedestal 9B provided.

  As shown in FIG. 5, the guide surface joint plate 8 </ b> A and the guide surface joint plate 8 </ b> B are fixed to the base 9 so as to mesh with each other's finger portions 82, and are attached to the girder body 2. Each guide surface joint plate 8 is placed with the joint plate body 81 on the base body 91 with the reduced diameter portion 83a of the insertion hole 83 facing the screw hole 93a provided in the screw portion 93, and is inserted into the insertion hole 83 from the outside. The screw 7 is screwed into the screw hole 93 a and fixed to the girder body 2. The screw 7 is accommodated in the insertion hole 83 with the head 7 a abutting against the bottom surface of the enlarged diameter portion of the insertion hole 83. Between each accommodating part 85 with which the guide surface seam plate 8A is provided and each accommodating part 85 with which the guide surface seam plate 8B is provided, the connecting member 6 is accommodated in the accommodating part 85 and latched on the latching protrusion 84. It is being handed over. The surface of the connecting member 6 is covered with an elastomer 60 as in the above embodiment.

  Also by the fall prevention device constituted by using the guide surface joint plates 8A and 8B, a plurality of connecting members 6 are spanned between the guide surface joint plate 8A and the guide surface joint plate 8B to guide the guide surface joint plates 8A and 8B. Since the connecting member 6 is disposed between the pedestal 9 and the pedestal 9, the same effect as in the above embodiment can be obtained.

  In addition, the connecting member 6 is accommodated in the accommodating portion 85 whose end is extended to the front edge portion of the joint plate body 81 located between the adjacent finger portions 82, and is connected to the latching protrusion 84 projecting from the accommodating portion 85. Since the member 6 is hooked, the safety at the time of an earthquake can be improved, maintaining the intensity | strength of the finger part 82. FIG.

  Moreover, in each fall prevention apparatus mentioned above, the connection member 6 was spanned between all the guide surface joint boards 4A and 4B with which the track girders 1A and 1B are equipped, and between guide surface joint boards 8A and 8B, and the fall prevention apparatus was comprised. Explained the case. However, the fall prevention device may be configured by spanning the connecting member 6 between some of the guide surface joint plates 4A, 4B and 8A, 8B included in the track girders 1A, 1B.

  Further, the connecting member 6 does not necessarily have an annular shape in which the end portions of the string-like members are connected. For example, only the end portion that is latched by the latching protrusion 84 or the latching groove 44 has an annular shape. May be. Moreover, the method of coat | covering the surface of the connection member 6 with an elastomer is arbitrary, and you may coat | cover by vulcanizing-bonding an elastomer. Further, the shapes of the guide surface joint plates 4A and 4B and the guide surface joint plates 8A and 8B are also arbitrary. For example, the number of the finger portions 42 and 82 is not limited to four.

  Further, the structure and quantity of the latching portion that hangs the connecting member 6 on the guide surface joint plates 4A and 4B and the guide surface joint plates 8A and 8B, and spans between the guide surface joint plate 4A and the guide surface joint plate 4B. The length of the connecting member 6 and the number of the connecting members 6 to be hooked in the respective hooking grooves 44 can be arbitrarily set. For example, a plurality of connecting members 6 having different lengths may be hooked on the hooking grooves 44 so that the tension applied by each connecting member 6 is applied stepwise. According to this structure, the energy absorption and buffering capacity at the time of an earthquake can be exhibited efficiently.

  In this case, the elongation of the connection member 6 having a small ring may be larger than the elongation of the connection member 6 having a large ring. When each connecting member 6 is composed of the same fiber rope, the connecting member 6 having a small elongation has higher strength than the connecting member 6 having a high elongation. After the energy is absorbed by the member 6, the movement of the track girders 1A and 1B can be regulated by the connecting member 6 having a large ring. When the movement of the track girders 1A and 1B is regulated, the guide surface joint plate 4 and the pedestal 5 are While preventing breakage, the expansion of the displacement between the track girders 1A and 1B can be reliably suppressed.

  Moreover, the said embodiment demonstrated the case where the latching part of the connection member 6 was provided in the guide surface joint board 4 attached to the guide surface 2b of the girder body 2A, 2B. However, as shown in FIG. 7, the latching portions of the connecting member 6 may be provided on the sole plates 10A and 10B attached to the lower surfaces of the beam bodies 2A and 2B.

  In the example shown in FIG. 7, in the sole plates 10 </ b> A and 10 </ b> B, a flat plate-like main body 11 is fixed to the girder main bodies 2 </ b> A and 2 </ b> B by the fixing unit 12. On the lower surface of the main body 11, a supported portion 14 supported by the supporting portions 16A and 16B is provided. The support portions 16A and 16B are fixed to the upper surface of a bridge pier (not shown) by anchors 15A and 15B, and the supported portion 14 is rotatably supported by a support shaft 17.

  Further, the lower surface of the main body 11 is provided with a latching portion 13 on which the connecting member 6 is latched. The connecting member 6 is stretched between the latching portion 13 of the sole plate 10A and the latching portion 13 of the sole plate 10B, and is covered with an elastomer 60 as in the above embodiment. .

  Even in such a configuration, since the connecting member 6 is bridged on the lower surface side of the girder main bodies 2A and 2B, the sole plate 10, the bearing 16 and the anchor 15 are prevented while preventing the appearance of the track girder 1 from being damaged. The anti-fall device can be activated before the breakage, improving safety during an earthquake.

  Moreover, although the said embodiment demonstrated the case where the connection member 6 was covered with the elastomer 60, it is good also as a structure which covers not only the connection member 6 but the guide surface joint boards 4 and 8 with the connection member 6. FIG. According to this configuration, not only the connecting member 6 but also the guide surface joint plates 4 and 8 can be protected by the elastomer. Further, for example, even when the guide surface joint plate 4A and the guide surface joint plate 4B collide and the finger portion 42 is damaged, the finger portion 42 covered with the elastomer is prevented from falling off from the joint plate main body 41. It can also improve the safety in the event of an earthquake.

1, 1A, 1B Track girder 2, 2A, 2B Girder body 2a Track surface 2b Guide surface 20 Gap 4, 4A, 4B Guide surface seam plate 41 Seam plate body 42 Finger portion 43 Insertion hole 43a Reduced diameter portion 44 Stop groove 5 , 5A, 5B Pedestal 51 Pedestal body 51a Through hole 52 Extending piece 53 Screw part 53a Screw hole 54 Bending piece 55 Fixing bolt 55a Head 56 Fixing plate 56a Through hole 57 Fixing bar 57a Head 6 Connecting member 60 Elastomer 7 Screw 7a Heads 8A, 8B Guide surface joint plate 81 Joint plate body 82 Finger part 83 Insertion hole 84 Holding projection 85 Housing part 9, 9A, 9B Pedestal 10A, 10B Sole plate 11 Body 12 Fixing part 14 Supported part 13 Latching part 15A, 15B Anchor 16A, 16B Bearing part 17 Support shaft

Claims (8)

A straddle-type monorail track girder falling prevention device that is supported by a support on a bridge pier and connected by adjoining the end of each track girder,
A hooking portion provided at the end portion is provided with a connecting member that is stretched with a talmi between the opposed orbital beams,
The connecting member has a surface covered with an elastomer, and is integrated with the elastomer. 2. The stride-type monorail track girder fall prevention device according to claim 1, wherein the connecting member is configured to be endless in an annular shape by weaving ends of fiber ropes. 3. A straddle-type monorail track girder fall prevention device according to claim 1 or 2, wherein a plurality of connecting members having different ring sizes are spanned between both the track girders.   4. The stride-type monorail track girder fall prevention device according to claim 3, wherein the elongation of the connecting member having a small ring is larger than the elongation of the connecting member having a large ring. The latching portion is formed on a pair of seam plates provided facing each other on both side surfaces of the end portions of both the track girders,
The straddle-type monorail track according to any one of claims 1 to 4, wherein the connecting member is disposed between the side surface and the joint plate and fixed to the track girder. Girder fall prevention device. The seam plate is arranged so that the finger portions extending in a comb-teeth shape from one edge of the main body mesh with the finger portions of the seam plate facing each other,
The latching portion extends to the one edge located between the adjacent finger portions and is formed on the main body to receive the connecting member, and the thin portion protrudes from the thin portion. 6. The straddle-type monorail track girder fall prevention device according to claim 5, wherein the strut type monorail track girder is provided with a latching projection for latching the connecting member. The seam plate is configured to be thinner than the main body so that the finger portions extending from one edge of the main surface side of the main body in a comb-tooth shape mesh with the finger portions of the seam plate facing each other. Has been
6. The straddle-type monorail track according to claim 5, wherein the hooking portion is configured by a single groove formed on the other main surface of the main body with both ends extending to the one edge. Girder fall prevention device.   The said latching | locking part is formed in a pair of sole plate provided facing the lower surface of the said edge part of both the said track | girder girders, The Claim 1 characterized by the above-mentioned. Fall prevention device for track girder for straddle type monorail.

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