JP2008031653A - Pc sleeper joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a PC sleeper joint easily formed into a required long size capable of while maintaining the strength of a central part within a required level or higher, and easily performing fastening. <P>SOLUTION: This PC sleeper joint A fastens PC sleeper units 1 to be fastened having lengths shorter than a total length for constituting a long size PC sleeper 10 having the total length of the sleeper length or longer of a single track of a railway rail R. This PC sleeper joint A has a bearing pressure plate 2 integrally arranged at the end of the PC sleeper unit 1 to be fastened, and having a storage hole 2b formed over the total length or the substantially total length of the PC sleeper unit 1 to be fastened and arranged for storing the fastening end of a tension reinforcing bar material 4, and a plurality of fastening holes 2a formed at both lateral ends or both vertical ends for inserting a fastening bolt 7. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a PC sleeper joint (joint) that can easily constitute a long PC sleeper used at a location such as a branching device of a railroad rail or a location where a plurality of railroad rails are arranged with high strength. Structure).

Conventionally, each railway rail is supported by a single sleeper on a double track or multiple track. And the branching device for changing between each rail is arrange | positioned in places, such as these double lines.
In the place where the branching device is disposed, the surface of the sleepers (top surface) located side by side of the railroad rails arranged side by side is basically the branching device so that the branching device operates smoothly and the transfer is performed smoothly. Must be at the same level. Further, in each railroad rail, the sleepers arranged at regular intervals in the longitudinal direction of the railroad rail must be arranged so that the surfaces thereof are in the same plane (the same plane or the same inclined plane). is there.

  Therefore, the height adjustment of the sleepers needs to be accurately performed three-dimensionally.

  For this reason, the height adjustment of the sleeper when laying the sleeper is a very troublesome work requiring considerable time and concentration.

  Therefore, by arranging a long sleeper having a length corresponding to the full width of a plurality of railroad rails arranged side by side at a place where the branching device as described above is disposed, the railroad rail is orthogonal to the longitudinal direction of the railroad rails. It is conceivable to facilitate level adjustment in the direction in which it is performed.

However, in the case of the long sleeper having such a configuration, the length becomes long and the weight becomes large, so that handling during transportation and laying work becomes troublesome. For example, even in the case of a normal PC sleeper, the length is about 2 m and the weight is about 300 kg. Furthermore, in the case of a long PC sleeper, the length is over 4 m and the weight is over 600 kg. Handling during laying work becomes troublesome. In particular, in the case of an elevated track, the presence of protective walls on both sides makes it difficult to handle the long PC sleepers on site.
Further, in the case of a long PC sleeper, if a load is applied to the center portion in the longitudinal direction of the sleeper, there is a fear that the sleeper may break in the middle.

  In addition, there exists a thing as described in patent document 1 regarding a long PC sleeper.

However, in the case of the long sleeper described in Patent Document 1, the structure of the fastening portion is complicated and expensive, and it is difficult to maintain the strength of the central portion at the required strength.
Japanese Patent Application No. 2004-244920.

  The present invention has been made in view of such a situation, and the configuration of the fastening portion is simple, the fastening can be easily performed, and the strength of the central portion can be maintained more than the required strength. It is an object of the present invention to provide a PC sleeper joint that can be easily made longer.

The PC sleeper joint according to the present invention is a PC sleeper joint for fastening fastened PC sleeper units having a length shorter than the full length to constitute a long PC sleeper having an overall length equal to or greater than the length of a single rail sleeper of a railroad rail. There,
This PC sleeper joint is provided integrally with the end of the PC sleeper unit for fastening, and accommodates the fastening end portion of the tension reinforcing bar disposed over the entire length or almost the entire length of the PC sleeper unit for fastening. It has a bearing plate provided with a provided accommodation hole and a plurality of fastened parts provided at both left and right ends or both upper and lower ends to attach a fastening bracket,
The fastening end surfaces of the bearing plates of a pair of the PC sleeper units to be fastened to be fastened face each other so that the fastened portions of both bearing plates coincide with each other. It is characterized in that it is configured so that the PC sleeper units for fastening can be fastened by attaching the metal fittings.

According to this PC sleeper joint configured as described above, the support plates integrally provided at the ends of a pair of PC sleeper units to be fastened are faced to each other with the support plates facing each other. A long PC sleeper can be easily obtained by attaching a fastener to each fastening portion of the pressure plate.
Therefore, by providing the bearing plate at both ends of the PC sleeper unit for fastening, it is possible to fasten the required number of PC sleeper units for fastening and obtain a long PC sleeper of the required length. It becomes.
As a result, even with an elevated track with protective walls on both sides, it is possible to easily carry it into the field and lay long PC sleepers without being affected by these protective walls.
Further, by inserting a spacer between the bearing plate to be fastened and the bearing plate, the length of the long PC sleeper can be appropriately adjusted.
Moreover, since the center part (fastening part) of the obtained elongate PC sleeper has fastened the support plate with the fastening metal fitting, it becomes possible to maintain high intensity | strength also in intensity | strength.

  In the PC sleeper joint, a notch formed by a wedge-shaped gap extending on the upper end side is provided between the bearing plate arranged at one end of the PC sleeper unit for fastening and the main body of the PC sleeper unit for fastening. If formed, even if a downward pressing force acts on the central portion of the formed long PC sleeper and bends, the concrete portion adjacent to the bearing plate will not be damaged by the bearing plate.

  Further, in the PC sleeper joint, the fastening bracket is composed of a fastening bolt and a nut, and a fastening hole for inserting the fastening bolt is provided in the fastened portion, and the fastening hole is provided at a position between the fastening hole and the fastening hole. When the accommodation hole is formed, a highly reliable fastening state can be easily obtained. Moreover, it becomes possible to fasten easily using a commercially available tool.

  Further, in the PC sleeper joint, if the bearing plate and the tension reinforcing bar are made of metal, the end of the tension reinforcing bar can be fastened to the bearing plate by welding or the like. Since the tensile force can be transmitted by the tension reinforcing bar over the entire length or almost the entire length of the formed long PC sleeper, the strength of the long PC sleeper can be further increased. In particular, it is possible to increase the strength of the fastening portion of the long PC sleeper.

  In the PC sleeper joint, when the bearing plates are arranged at both ends of the PC sleeper unit for fastening, as described above, a desired number of PC sleeper units for fastening are used, It becomes possible to form a long PC sleeper having a longer overall length.

  According to the PC sleeper joint according to the present invention, it is possible to easily arrange a single sleeper (long PC sleeper) in a direction orthogonal to the longitudinal direction of the railroad rail even in the case of a double track or a double track. Therefore, level adjustment becomes much easier. Moreover, since this long PC sleeper can be formed by fastening a necessary number of PC sleeper units to be fastened with a short overall length, it can be used in any place, for example, an elevated track that is difficult to route. . In addition, it is possible to obtain a necessary and sufficient strength of the fastening portion.

(Embodiment)
Hereinafter, one embodiment of a PC sleeper joint according to the present invention will be specifically described with reference to the drawings.

  FIG. 1 is a plan view showing an overall configuration of a long PC sleeper formed by fastening a PC sleeper unit for fastening using a PC sleeper joint according to an embodiment of the present invention, and FIG. 2 is a side view. 3 is a partially enlarged plan view showing the fastening portion shown in FIG. 1 in an enlarged manner, and FIG. 4 is a partially enlarged side view showing the joint portion shown in FIG. 1 in an enlarged manner.

  1 to 4, reference numeral 1 denotes a PC sleeper unit for fastening to form a long PC sleeper 10 (see FIGS. 1 and 2) by fastening them to each other. A support plate 2 is integrally provided at the end. In the embodiment shown in FIG. 1 and FIG. 2, the bearing plate 2 is provided only at one end of the PC sleeper unit 1 to be fastened, but three or more fastened plates are to be fastened. When it is desired to obtain a “longer full-length” long PC sleeper 10 by fastening the PC sleeper unit 1, although not shown, the bearing plates 2 are provided at both ends of the PC sleeper unit 1 for fastening.

The bearing plate 2 according to this embodiment is formed of a steel plate made of a thick plate, and the bearing plate 2 is a PC sleeper unit for fastening in height as shown in FIGS. 5 and 6. 1 has a width wider than the full width w (see FIG. 6) of the PC sleeper unit 1 for fastening.
And, in the left and right ends of the bearing plate 2, that is, the portions 2D protruding from the left and right ends of the PC sleeper unit 1 to be fastened, a plurality of, in this embodiment, three locations in the vertical direction (the left and right total 6 places), the fastening holes 2a are formed in the fastened portions, being separated from each other.
As shown in FIG. 6, the bearing plate 2 is formed between the fastening hole 2 a disposed at the right end portion of the bearing plate 2 and the fastening hole 2 a disposed at the left end portion, that is, the bearing plate 2. Corresponding to the place where the tension reinforcing bar 4 (see FIG. 3, FIG. 4, FIG. 5 and FIG. 7), which is inserted over the entire length or almost the entire length of the PC sleeper unit 1 to be fastened, is disposed. An accommodation hole 2b is formed at a position where the operation is performed. In the case of this embodiment, the tension reinforcing bar 4 has a transverse cross section of the PC sleeper unit 1 to be fastened at the cross-sectional position as shown in FIGS. 3, 4, 5 and 7. For example, four locations are arranged at appropriate intervals from each other at a plurality of locations displaced from the four ends toward the center. And the said accommodation hole 2b is formed in four places corresponding to the position of the bearing plate 2 corresponding to the position of the said tension reinforcement bar | burr 4. As shown in FIG.

  In this embodiment, the tension reinforcing bar 4 is made of steel, and an external screw is screwed to the end 4 e of the tensile reinforcing bar 4, and the male screw portion is an accommodation hole of the bearing plate 2. The tension reinforcing bar 4 is integrally fastened to the bearing plate 2 by projecting into 2b and screwing a nut (not shown) onto the projecting male thread. For this reason, the accommodation hole 2 has a large diameter so that the fastening end face 2f side accommodates the nut, and a portion on the side opposite to the fastening end face 2f from there has a smaller diameter for penetrating the tensile reinforcing bar 4 It is comprised by the hole of 2 step | paragraph diameter shape formed. Then, the end face of the nut screwed in this way does not protrude from the fastening end face 2f of the bearing plate 2 and, more precisely, in a state of being slightly retracted from the fastening end face 2f. In the receiving hole 2b. However, the tension reinforcing bar 4 and the bearing plate 2 can be fastened by welding.

  For this reason, when a bending load or the like acts on the PC sleeper unit 1 to be fastened and a tensile force or the like acts on the tension reinforcing bar 4, this tensile force or the like is transmitted to the bearing plate 2. The fastening end surface 2f of the pressure bearing plate 2 is in a flat state.

  As shown in FIG. 4, a wedge-shaped notch (gap) 6 is formed at the upper end of the concrete portion of the PC sleeper unit 1 for fastening adjacent to the bearing plate 2 so as to expand at the upper end. .

  By the way, in the said embodiment, although both the said tension reinforcement bar | burr 4 and the bearing plate 2 were comprised with steel materials, it is comprised in another material, for example, reinforced resin etc. with which carbon fiber was mixed. It may be. Even in such a case, in order to obtain the above-described action, it is desirable that the tension reinforcing bar 4 and the bearing plate 2 are integrally connected by an adhesive means such as welding.

  In FIG. 1, R represents a railroad rail, C represents a center line of the railroad rail R, and P represents a floor board.

Thus, according to the PC sleeper joint A according to the present embodiment configured as described above, a long PC sleeper 10 is obtained by simply fastening a plurality of PC sleeper units 1 to be fastened as follows. Can do. That means
When the two PC sleeper units 1 to be fastened are fastened to obtain the long PC sleeper 10, the pair of PC sleeper units 1 to be fastened to be fastened are integrated with the ends thereof. It arrange | positions in the state which the fastening end surface 2f of the said bearing plate 2 fixed has faced, and the fastening hole 2a of the corresponding position of each bearing plate 2 each corresponded.

In such a state, the fastening bolts 7 are inserted into the six fastening holes 2 a of each supporting plate 2, and the nuts 8 are screwed to the tips of the fastening bolts 7, respectively. In this embodiment, the fastening bolt 7 and the nut 8 constitute a fastening fitting, but the fastening fitting may be constituted by other components such as a fastening fitting using a wedge.
When the screwing with the fastening bolt 7 and the nut 8 is completed in this way, the two PC sleeper units 1 to be fastened are united, and the long PC sleeper 10 having the entire length twice that of the PC sleeper unit 1 to be fastened. Can be formed.

  And this long PC sleeper 10 has only to carry in the PC sleeper unit 1 for fastening of the half length of the long PC sleeper 1 each on the spot as mentioned above, and fasten it with the fastening metal fitting as mentioned above in the spot. Even on elevated tracks with protective walls on both sides, they can be assembled without difficulty. In other words, it can be easily carried into the installation site and handled at the installation site.

The long PC sleeper 10 formed as described above is laid on the road floor, and an external force is applied from above by the passage of a train or the like, so that a pressing force is applied to the central part of the long PC sleeper 10. Even if it acts, a part of these external forces are absorbed as much as possible by the tension reinforcing bar 4 formed in a single shape over the entire length of the long PC sleeper 10 via the bearing plate 2. The amount of bending of the long PC sleepers 10 can be reduced.
Even when the central portion of the long PC sleeper 10 is bent slightly downward, as described above, the notch 6 is provided in the concrete portion adjacent to the bearing plate 2, and therefore the concrete is applied to the bearing plate 2. The parts do not come into contact and the concrete part is not lost.

  Further, when the PC sleeper unit 1 to be fastened is fastened to form the long PC sleeper 10, if the long PC sleeper 10 is shorter than a desired dimension, for example, 5 cm shorter, the spacer 9 When a 5 Omm-thick steel plate is 7 cm shorter, as shown in FIG. 8, a 7 Omm-thick steel plate is selectively interposed between the bearing plate 2 and the bearing plate 2 to be fastened as a spacer 9. This makes it possible to adjust the overall length of the long PC sleeper 10. In such a case, it is necessary to form a fastening hole at a position corresponding to the fastening hole 2 a of the spacer 9, and the fastening bolt 7 has an axial length that is longer by the thickness of the spacer 9. Needless to say, you need to use one.

  Further, when a longer long PC sleeper is required, a bearing plate is provided at both ends of the PC sleeper unit for fastening, and two PC sleeper units 1 for fastening are provided according to the required length. As described above, for example, three, four, or more fastened PC sleeper units 1 can be obtained by fastening as described above. Even in such a case, if it is desired to make the entire length slightly longer in length, it can be adjusted by inserting the spacer between the bearing plate to be fastened as described above.

  And as for the length of the said PC sleeper unit 1 for fastening, you may make it the same length as the full length of the sleeper of a single track rail like the said embodiment, or shorter, for example, a single track rail You may set to the length of 1/2 of the full length of a sleeper. Alternatively, if multiple types of fastened PC sleeper units with different overall lengths are prepared, and those with different lengths are selectively used as necessary, they can be further adapted to the required overall length. Easy configuration.

  By the way, it goes without saying that the present invention is not limited to the above-described embodiments, and can be implemented by those skilled in the art appropriately modified within the obvious range.

  The PC sleeper joint according to the present invention can be used to realize a long PC sleeper laid under a railroad rail branching device or the like.

It is a top view which shows the schematic structure of the whole elongate PC sleeper formed by fastening the to-be-fastened PC sleeper unit using the PC sleeper joint concerning one Embodiment of this invention. It is a side view of the elongate PC sleeper shown in FIG. FIG. 2 is a partial enlarged plan view showing an enlarged fastening portion shown in FIG. 1. FIG. 3 is a partial enlarged plan view showing an enlarged fastening portion shown in FIG. 2. It is the VV arrow enlarged view of FIG. It is a figure which shows the structure of the bearing plate of the fastening part of FIGS. It is a partial expansion perspective view of a fastening part. It is a top view of the elongate PC sleeper which interposed the spacer between the bearing plate to be fastened and the bearing plate.

Explanation of symbols

A ... PC sleeper joint
1 ... PC sleeper unit for fastening
2 ... Pressure plate
2a ... Fastening hole
2b ... Housing hole
2f ... Fastening end face
4 ... Tensile reinforcing bar
6 ... Notch
7 ... Fastening bolt
8 ... Nut
10 ... Long PC sleepers

Claims (5)

A PC sleeper joint that fastens the PC sleeper units to be fastened with a length shorter than the full length to constitute a long PC sleeper having a total length equal to or greater than the length of a single rail sleeper of the rail,
This PC sleeper joint is provided integrally with the end of the PC sleeper unit for fastening, and accommodates the fastening end portion of the tension reinforcing bar disposed over the entire length or almost the entire length of the PC sleeper unit for fastening. It has a bearing plate provided with a provided accommodation hole and a plurality of fastened parts provided at both left and right ends or both upper and lower ends to attach a fastening bracket,
The fastening end surfaces of the bearing plates of a pair of the PC sleeper units to be fastened to be fastened face each other so that the fastened portions of both bearing plates coincide with each other. A PC sleeper joint, characterized in that a metal sleeper unit for fastening can be fastened by attaching a metal fitting.   A notch formed by a wedge-shaped gap extending on the upper end side is formed between a bearing plate disposed at one end of the PC sleeper unit for fastening and the main body of the PC sleeper unit for fastening. The PC sleeper joint according to claim 1.   The fastening bracket is composed of a fastening bolt and a nut, a fastening hole for inserting the fastening bolt is provided in the fastened portion, and the receiving hole is formed at a position between the fastening hole and the fastening hole. The PC sleeper joint according to claim 1 or 2, characterized in that.   The PC sleeper joint according to any one of claims 1 to 3, wherein the bearing plate and the tensile reinforcing bar are made of metal. The PC sleeper joint according to any one of claims 1 to 4, wherein the support plates are arranged at both ends of the fastened PC sleeper unit.

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