JPS5830805Y2 - Joint for rail - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a rail joint, and more particularly to a rail joint that connects both ends of rails without holes in a slab track section without a track bed.

Slab track without a bed has been increasingly used to support rails in recent years, but sleeper track with a bed has been in use for many years.

The connection of the rails on sleeper tracks with bedbeds differed depending on whether or not holes were provided at both ends of the rails.

In rails with holes, the rails are tightened and connected by the joint plates by passing bolts through the holes in the opposing ends of the two rails and the corresponding holes in the joint plates.

However, it is not possible to employ the above-mentioned connection means in rails without holes, and the following connection means have been used.

That is, first, the bed below the opposite ends of the two rails to be connected in the sleeper track section with bed as shown in FIGS. 3 and 4 is excavated (the third
(see figure).

Next, as shown in FIG. 13, a U half-frame 1 having holes in each of the upright parts on both sides is inserted from below the rail so as to accommodate the bottom part of the rail.

FIG. 5 shows a state immediately before the U half-frame 1 is fitted onto the rail from below the rail, and FIG. 6 shows a state where the first one of the U-half frames 1 is fitted onto the rail.

A word to note here is that the depth to which the trackbed is excavated must be greater than the height of the upright part of the U-half frame 1, and this depth is shown in Figure 3 (as the distance between the two dot-dashed lines). Approximate values are shown.

Next, bolts 3 as shown in FIG. 13 are passed through the holes in the upright part of the U-half frame 1, and then the bolts 3 as shown in FIG. By pressing and tightening the ends of the bolts 3, the rails are tightened by the joint plate 2 and are connected.

Finally, the excavated trackbed is returned to its original condition to ensure support for the rails.

FIG. 1 shows a plan view of a rail connected by this connecting means, and FIG. 2 shows a side view thereof.

The above-mentioned connection means are effective as joints for rails without holes in sleeper track sections with trackbeds, but they have been used in recent years for non-perforated rails as shown in Figures 9 and 10, where the trackbed cannot be excavated. It cannot be practically used as a joint for a rail without holes in a floor slab track section.

The main reason for this is that in a slab track without a track bed, the clearance a (see Figures 9 to 12) between the slab top surface and the rail bottom 4 is extremely small (about 40 mm), and the U
This is because the half frame 1 cannot be inserted through the gap a.

Therefore, in order to use the U half frame 1 as before without digging out the trackbed, a rail fastening device 10 as shown in FIG.
It is necessary to release a large number of rails and lift the rails, and similar work is required to remove the U half frame 1 once installed, making it practically unusable.

Further, conventional rail joints used in slab tracks without trackbeds are disclosed in Japanese Utility Model Application Publication No. 48-61502 and Japanese Utility Model Application Publication No. 51-20602.

However, in these joints for rails, the joint plate that is applied to the rail is tightened using a pressing bolt, so a strong tightening force is required for sufficient tightening, and the vibration of the rail, etc. It loosens easily.

Also, during assembly, many bolts are used that are easily loosened.

Therefore, the main objective of the present invention is to eliminate the above-mentioned drawbacks and to provide a hole-free system that can be used without releasing a large number of rail fastening devices on a trackless slab track where it is impossible to dig out the trackbed. Our objective is to provide rail joints.

Another object of the present invention is to provide a joint for a non-perforated rail that can also be used for a non-perforated rail in a sleeper track section with a bed.

Still another object of the present invention is to provide a rail joint that can be used as a reinforcing member for rails at rail breakage and rail welding locations.

A further object of the present invention is to combine a pair of booth plates with a groove at one end and an upright bar at the other end, and also use a wedge to securely tighten the plates, thereby ensuring firm clamping that will not loosen even when the rails vibrate. The object of the present invention is to provide a rail joint that can be easily installed.

Next, the present invention will be explained with reference to the drawings.

Referring to FIGS. 7 to 12 and FIGS. 14 to 17, installation examples and respective parts of the rail joint of the present invention are shown.

14 to 16 show a plan view, a side view, and a front view, respectively, of a base plate member 15, which is a main component of the rail joint of the present invention, and this base plate member 15 has a rectangular base plate 6 and this An upright rod 11 fixed to a surface adjacent to one end of the base plate 6 in the longitudinal direction (lateral direction) is used.

This upright bar 11 projects longitudinally beyond the base plate, and the length of its projecting portion 12 is equal to the length of the base plate 6.
The vertical length and width of are equal.

The protruding portion 12 is for fitting into a vertical groove 13 provided in the base plate 6, which will be described later.

Further, a tapered surface is formed on the inner wall surface of the upright rod 11, and this tapered surface cooperates with a tapered surface of a vertical wedge 10, which will be described later, to perform a wedge action.

Further, the base plate 6 described above is made to have a thickness slightly thinner than the gap a between the surface of the slab track and the bottom of the rail, so that it can be passed under the rail.

The base plate 6 is provided with a longitudinal groove 13 adjacent to the end opposite to the end at which the upright bar 11 is provided, the groove 13 being configured to partially receive the protruding portion 12 of the upright bar. has been done.

The base plate 6 is also provided with two slots 8 inside each of the upright rods 11 and the grooves 13 for mounting T-shaped bolts 7, which will be described later.

This slot 8 is a rectangular hole on the upper surface of the base plate through which the head of the T-shaped bolt 7 passes, but the head cannot be pulled out if the angle of the T-shaped bolt is changed. On the lower surface side, there is a partially cut out conical hole that fits into the inner tapered surface of the head but limits the rotation of the head.

FIG. 17 shows the vertical wedge 10 and T-shaped bolts 7, which are connected to the base plate member 15 as described later.
The upright rod 1 of the joint plate 14 and the base plate member 15 acts as a fixture to fix the joint plate 14 to the joint plate 14.
A wedge action is performed between 1 and 1.

This vertical wedge 10 has tapered surfaces formed on both sides thereof, one tapered surface engages with the tapered surface of the upright rod 11 described above, and the other tapered surface engages with the tapered surface of the joint plate 14 described later. It is for the purpose of matching.

Further, this vertical wedge 10 has a through hole for attaching the vertical wedge 10 to the base plate 6 with T-shaped bolts 7.

The T-shaped bolts 7 are secured by a rectangular head with a tapered surface on the inside, a nut, a washer, etc.

Particularly, as shown in FIG. 12, the joint plate 14 has one side shaped to fit the lower surface of the rail head and the upper surface of the rail bottom, and the other side cooperates with the tapered surface of the vertical wedge 10. It is configured to have a tapered surface 16 that functions.

Next, an embodiment of the method for installing the rail joint of the present invention will be described.

During installation, a pair of base plate members 15 are used, and for convenience of explanation, one of the base plate members is designated as 15'.

Base plate members 15 and 15 as shown in FIG.
′ indicates that the base plate 6 of each of them is indicated by the arrow A.
and is passed under the rail from both sides of the rail in the direction shown in B.

In this case, the protruding portions 12 of the upright bars 11 of the base plate members 15 and 15' are connected to the other base plate 6, respectively.
The base plate 6 is oriented so that it can fit into the groove 13 of the base plate 6.
are passed under the rails.

The base plate members 15 and 15' are then attached to the upright rod 11.
The protruding portions 12 of the two are respectively fitted into the grooves 13 of the other.

This is easily done by lifting the projecting part 12 somewhat;

Next, as shown in FIG. 12, each of the pair of joint plates 14 is applied to both sides of the rail, and the bolts 7 are inserted into the slots
The vertical wedge 10 is placed between the joint plate 14 and the upright rod 11 by inserting the vertical wedge 10 into the through hole of the vertical wedge 10 and passing through the bolt 7, and by tightening the bolt 7 against the base plate 6, A vertical wedge 10 acts as a wedge between the joint plate 14 and the upright bar 11.

As a result, the rails are tightened and connected from both sides by the joint plates 14.

In this case, the vertical wedge 10 and the bolts 7 serve as fixtures for fixing the base plate member 15 to the joint plate 14.

7 and 8 show a plan view and a side view, respectively, of the rail joint of the present invention installed.

Although the rail joint according to the invention has been described by means of the illustrated embodiment, other variations are also possible.

For example, it is also possible to tighten the rail with the joint plate without using a vertical wedge by providing a hole in the upright bar of the base plate member in a direction perpendicular to the rail and passing bolts through the hole to press and tighten the joint plate.

In such a case, a conventional type of joint plate as shown in FIG. 3 is preferable.

In this case, only the bolts are base plate member 1.
5 to the joint plate.

Because of the above-mentioned configuration, the rail joint of the present invention can be used effectively with holeless rails, which can be used on slab tracks without trackbeds where it is impossible to dig out the trackbed, without releasing a large number of rail fastening devices. can be connected to.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an example of a conventional holeless rail joint and rail fastening device. FIG. 2 is a side view of FIG. 1. Figure 3 shows lines S and -S in Figure 1. FIG. FIG. 4 is a cross-sectional view taken along line S2-32 in FIG. FIGS. 5 and 6 are perspective views showing the installation order of conventional joints for rails without holes. FIG. 7 is a plan view of the rail joint and rail fastening device of the present invention. FIG. 8 is a side view of FIG. 7. FIG. 9 is a cross-sectional view taken along line S3-33 in FIG. 7. FIG. 10 is a sectional view taken along line S4-S4 in FIG. 7. Figures 11 and 12 are perspective views showing the installation order of the rail joint of the present invention. Figure 13 shows the U half frame and bolts used in the conventional rail joint without holes. FIG. 14 is a plan view of a base plate according to an embodiment of the present invention. FIG. 15 is a side view of FIG. 14. FIG.
FIG. FIG. 17 is a perspective view of the vertical wedge and T-shaped bolts used in the rail joint of the present invention. 1...U-shaped frame, 2...joint plate, 3...
...Fixing bolts, 4...Rail fastening device, 5...Rail fastening device, 6...Base plate, 7...T type bolts , 8...
...Slot, 9...The upright bar is installed in the groove, 10.
... Vertical wedge, 11 ... Upright bar, 12.
...Protruding part of the upright rod, 13...Groove, 1
4... Joint plate, 15.15'... Base plate member, a... Gap, A, A'...
····rail.

Claims (2)

[Scope of utility model registration request] (1) An upright bar having a protruding portion 12, which is made thinner than the gap between the slab track surface and the bottom of the rail, has a groove 13 on one end, and is fixed to the other end of the base plate 6 and the base plate 6. 11, a pair of joint plates 14 applied to both sides of the rails, and a pair of joint plates 14 applied to both sides of the rails to sustain the opposite ends of the two rails A, A'. The base plate member 15 is tightened to tighten the joint plate 14.
and a fixture for fixing the base plate members 15 to the joint plate 14, each of the base plate members 15 being passed under the rails A, A' from the opposite side of the rail, so that the protruding portion 12 of each upright bar 11 is fitted into the groove 13 of the other base plate, and the joint plate 14 is connected to the rail A, together with the base plate member 15.
A rail joint characterized by being fixed at A'. (2) Utility Model Registration In the rail joint according to claim (1), the fixture comprises a vertical wedge 10 and bolts 7, and the bolts 7 are slots 8 provided in the base plate 6. The vertical wedge 10 is attached to the bolts 7 between the joint plate 14 and the upright bar 11, and by tightening the bolts 7, the joint plate 14 tightens the rail. Joint for rail.