JPH045528Y2 - - Google Patents

Description

[Detailed description of the invention] "Field of industrial application" This invention relates to a device for elastically connecting the joints at the ends of ultra-long rails, several hundreds of meters long, to concrete sleepers. .

``Conventional technology'' The track configuration used for Shinkansen and other railway trunk lines by continuously laying ultra-long rails with a length of several hundred meters copes with the expansion and contraction phenomenon of ultra-long rails due to changes in temperature. In order to do this, the receiving rail part at the joint of one ultra-long rail and the tongue rail part of the joint of the other ultra-long rail are connected to concrete sleepers via floor plates and elastic track parts, etc. so that they can slide against each other in the longitudinal direction. However, as shown in Figs. 5 and 6, the conventional elastic fastening device for the joint portion is slidably connected to the receiving rail portion 30 of one of the ultra-long rails. Tongue rail part 3 of the other super long rail
1 is fastened to the floor plate 34 via the rail brace 32, engagement washer 33, etc. with a lock nut 35, washer 36, and bolt 37, and the receiving rail portion 30
The floor plate 34 which is connected to the tongue rail part 31 is further connected to the concrete sleeper 3 via the track part 38.
9, and the concrete sleeper 39 and the floor plate 34 are fastened together with a lock nut 43 and a bolt 42 with a coil spring 41 screwed into an embedded plug 40 provided on the concrete sleeper 39.

``Problems to be solved by the invention'' As described above, the conventional ultra-long rail joint expansion/contraction fastening device first connects the receiving rail portion 30 of one long rail in a slidable manner and the tongue rail portion of the other long rail. 31 is applied to the floor plate 34 with the rail brace 32 and the engagement washer 33, and fastened with the lock nut 35, washer 36, and bolt 37, and then the floor plate 34 is brought into contact with the concrete sleeper 39 via the track piece 38, and this Since the concrete sleepers 39 and the floorboards 34 are fastened using separately prepared bolts 42 with springs 41 and lock nuts 43, the tightening process is time-consuming and requires a large number of tightening members. Moreover, as the tightening points are spread out, the floor plate becomes longer and the track parts must be correspondingly larger, which is uneconomical.

The present invention solves the disadvantages of the conventional fastening devices of this kind as described above, and makes it possible to integrally fasten the rail and the floorboard, the floorboard, the track piece, and the concrete sleeper with a single bolt. A joint expansion/contraction fastening device that unifies the attachment points, reduces the number of fastening members, makes tightening work easier and faster, and enables the use of shorter floor plates and smaller track pieces than conventional ones, reducing costs. The purpose is to provide

"Means for Solving the Problems" The present invention takes the following means to achieve the above object.

A square male screw part is provided at the lower part to be screwed into the plug embedded in the concrete sleeper, a polygonal enlarged part for tightening is provided on the upper part of the square male thread part, and a shaft is connected to the center of the upper surface of the polygonal enlarged part for tightening. Form a threaded rod with a male threaded part on the top of the part.

A track part that fits into the fitting recess of the concrete sleeper, and a floor plate that fits into the fitting recess through the track part, are arranged so as to match the position of the embedded plug of the concrete sleeper, and are larger than the diameter of the screw rod. A through hole is provided.

Then, the track part is fitted into the fitting recess of the concrete sleeper, the floor plate is placed on the track part, the through hole of the track part and the floor plate is aligned with the embedded plug of the fitting recess, and the upper surface of the floor plate is fitted. Arrange the screws and insert the screw rods into the through holes of the floorboard and track pads, screw the square male screws into the embedded plugs of the concrete sleepers, and attach the track pads and floorboard to the concrete sleepers using the polygonal enlarged part for tightening and the screws. Tighten and fix.

Next, the engagement hole of the rail brace, whose side is in contact with the abdomen and one side of the base of the receiving rail part, is fitted into the shaft part connected to the upper surface of the tightening polygonal enlarged part of the screw rod, and the rail is closed. A lock nut equipped with a washer is screwed onto the male thread of the shaft protruding from the upper surface of the brace and tightened to fasten the rail brace to the floorboard.

In addition, the engagement hole of the engagement washer whose side edge is engaged with one side edge of the base of the tongue rail part is fitted into the shaft part of the upper surface of the polygonal enlarged part for tightening the screw rod on the other side. A lock nut equipped with a washer is screwed onto the male thread of the shaft protruding from the upper surface of the engagement washer and tightened to fasten the engagement washer to the floorboard.

As described above, the present invention uses only a screw rod with a polygonal enlarged part for tightening in the middle, and does not require any other bolts, and can be used as a series of rail braces to support concrete sleepers, track parts, floor plates, and supporting rail parts. It is also possible to fasten a series of engagement washers that support concrete sleepers, track parts, floor plates, and tongue rail parts.

"Example" Next, an example of implementation of the present invention will be described in detail with reference to the drawings.

A square male screw part 1 is provided at the lower part, a polygonal enlarged part 2 for tightening is provided on the upper part of the square male thread part 1, and a shaft part 3 is connected to the center of the upper surface of the polygonal enlarged part 2 for tightening. Part 3
A threaded rod 5 having a male threaded portion 4 is formed on the top thereof.

In addition, embedded plugs 8, 8 made of a hard synthetic resin material are embedded near both ends of the fitting recess 7 of the concrete sleeper 6, and are screwed into the square male screw portion 1 of the screw rod 7.
In addition, the fitting recess 7 is connected to both ends of the raceway part 9 that fits into the fitting recess 7 and via the raceway part 9.
Through holes 11, 11 having a diameter larger than the diameter of the screw rod 5 are provided near both ends of the floor plate 10 to be fitted into the screw rod 5, respectively, in alignment with the positions of the embedded plugs 8, 8.

Then, the track part 9 is fitted into the fitting recess 7 of the concrete sleeper 6, and the floor plate 1 is placed on the track part 9.
0, and the through holes 11, 11 provided near both ends of the track pad 9 and both ends of the floor plate 10 are aligned with the embedded plugs 8, 8 buried near both ends of the fitting recess 7, and A washer 12 is arranged on the upper surface, and the screw rod 5 is inserted into the floor plate 10 and the through holes 11 near both ends of the track part 9,
11, screw the square male screw part 1 of the screw rod 5 into the embedded plugs 8, 8, apply a wrench (not shown) to the polygonal enlarged part 2 for tightening, and tighten the screw rod 5. The track part 9 and the floor plate 10 are tightly fixed to the concrete sleeper 6 by the polygonal enlarged part 2 and the washer 12.

Further, as shown in FIGS. 2 and 3, the abdomen 1 of the receiving rail portion 13 of the ultra-long rail is attached to the shaft portion 3 connected to the center of the upper surface of the tightening polygonal enlarged portion 2 of the screw rod 5.
A washer 17 is disposed on the male threaded portion 4 of the shaft portion 3 protruding from the upper surface of the rail brace 16 into which the engaging hole 16' of the rail brace 16 whose side is in contact with one side of the base portion 15 is fitted. The rail brace 16 is fastened to the floor plate 10 by screwing together the lock nuts 18, and the tongue rail portion 1 of the ultra-long rail is attached to the shaft portion 3 at the center of the upper surface of the polygonal enlarged portion 2 for tightening the other screw rod 5.
9, the engagement washer 21 is fitted into the engagement hole 21' of the engagement washer 21, one side edge of which is engaged with the side edge of the base portion 20 of the engagement washer 2.
A lock nut 18 having a washer 17 is screwed onto the male screw part 4 of the shaft part 3 which can protrude from the upper surface of the shaft part 1 and tightened, thereby fastening the engaging washer 21 to the floor plate 10.

As described above, according to the present invention, the polygonal enlarged part 2 for tightening
Concrete sleepers 6, track pieces 9, floor plates 10, and rail braces 16 can be assembled using only a screw rod 5 with
In addition, by fastening the engagement washers 21 in series, the receiving rail portion 13 and the tongue rail portion 19 can be reliably supported.

``Effects of the invention'' As mentioned above, this invention is a concrete sleeper and track part that supports and supports the receiving rail part and the tongue rail part at the joint of an ultra-long rail using only a screw rod having a polygonal enlarged part for tightening in the middle. , the rail brace and the engagement washer can be fastened together, and the number of mutually tightened points has been rationalized and reduced. Compared to conventional devices, the length of the floor plate has been shortened, the track parts have been made smaller, and the number of tightening members has been reduced. to reduce costs and meet demand more effectively.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention, and Fig. 1 is a plan view showing the joined state of the receiving rail part and the tongue rail part of the joint part of the ultra-long rail, and Fig. 2 is a vertical cross-sectional view taken along line A-A of the same. , Fig. 3 is a longitudinal sectional view taken along line B-B in Fig. 1, Fig. 4 is a front view of the screw rod, Fig. 5 is a longitudinal sectional view of the tongue rail portion of the conventional device, and Fig. 6 is a longitudinal sectional view of the conventional device. FIG. 3 is a longitudinal cross-sectional view of a joint between a tongue rail portion and a receiving rail portion. 1... Square male screw part, 2... Polygonal enlarged part for tightening,
3...Shaft part, 4...Male thread part, 5...Screw rod, 6
...Concrete sleeper, 8,8...Embedded plug, 9...
... Track part, 10 ... Floor plate, 13 ... Reception rail part, 16 ... Rail brace, 18 ... Lock nut, 19 ... Tongue rail part, 21 ... Engagement washer.

Claims (1)

[Scope of utility model registration request] A square male screw part is provided at the lower part, a polygonal enlarged part for tightening is provided on the upper part of the square male thread part, a shaft part is connected to the upper surface of the polygonal enlarged part for tightening, and a male thread part is provided on the upper part of the shaft part. A screw rod is formed, and the square male screw part of the screw rod is screwed into the embedded plug of the concrete sleeper, and the track part and the floorboard are tightened and fixed to the concrete sleeper with the polygonal enlarged part for tightening of the screw rod. An ultra-long rail made by fastening the receiving rail part, a rail brace that supports and maintains the tongue rail part, and an engagement washer to the floor plate using the shaft part with the male screw part on the upper surface of the polygonal enlarged part for tightening and the lock nut. Seam expansion fastening device at the end of.